:root {
  --doan-blue: #0066b3;
  --doan-blue-dark: #004d87;
  --doan-blue-light: #3399cc;
  --doan-blue-lighter: #e6f3fa;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --success: #10b981;
  --success-dark: #047857;
  --warning: #f59e0b;
  --warning-dark: #92400e;
  --danger: #ef4444;
  --danger-dark: #b91c1c;
  --info: #0284c7;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 8px 22px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 18px 42px rgba(15, 23, 42, 0.09);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body.submission-page {
  margin: 0;
  min-width: 320px;
  background: var(--gray-50);
  color: var(--gray-800);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.submission-page button,
.submission-page input,
.submission-page select,
.submission-page textarea {
  font: inherit;
}

.submission-page button,
.submission-page a {
  -webkit-tap-highlight-color: transparent;
}

.submission-page [hidden] {
  display: none !important;
}

.submission-page .material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 450, 'GRAD' 0, 'opsz' 24;
  line-height: 1;
}

.submission-page .site-page {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.submission-page main {
  flex: 1;
}

.submission-page .container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header - đồng bộ với index */
.submission-page .site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding: 1rem 0;
  background: linear-gradient(135deg, var(--doan-blue) 0%, var(--doan-blue-dark) 100%);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.submission-page .header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.submission-page .brand {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.75rem;
  color: var(--white);
  text-decoration: none;
}

.submission-page .logo-item {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  object-fit: contain;
}

.submission-page .logo-divider {
  width: 2px;
  height: 30px;
  flex: 0 0 auto;
  background: linear-gradient(to bottom, transparent, rgba(255, 255, 255, 0.8), transparent);
}

.submission-page .brand-text {
  display: block;
  min-width: 0;
}

.submission-page .brand-text strong,
.submission-page .brand-text small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.submission-page .brand-text strong {
  font-size: 1.06rem;
  line-height: 1.3;
}

.submission-page .brand-text small {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.82rem;
}

.submission-page .header-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.submission-page .header-link {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
  padding: 0.55rem 0.78rem;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 8px;
  color: var(--white);
  font-size: 0.83rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.submission-page .header-link .material-symbols-outlined {
  font-size: 1.08rem;
}

.submission-page .header-link:hover,
.submission-page .header-link:focus-visible {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.72);
  outline: none;
  transform: translateY(-1px);
}

.submission-page .header-link.active {
  border-color: var(--white);
  background: var(--white);
  color: var(--doan-blue-dark);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.12);
}

/* Hero */
.submission-page .intro-section {
  padding: 2.25rem 0;
  border-bottom: 1px solid var(--gray-200);
  background:
    radial-gradient(circle at 8% 20%, rgba(51, 153, 204, 0.13), transparent 25%),
    linear-gradient(180deg, var(--doan-blue-lighter), var(--gray-50));
}

.submission-page .intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 1rem;
}

.submission-page .intro-main,
.submission-page .intro-side {
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow-sm);
}

.submission-page .intro-main {
  padding: 1.65rem;
}

.submission-page .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.72rem;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(0, 102, 179, 0.08);
  color: var(--doan-blue-dark);
  font-size: 0.78rem;
  font-weight: 700;
}

.submission-page .section-kicker .material-symbols-outlined {
  color: var(--doan-blue);
  font-size: 1rem;
}

.submission-page .intro-main h1 {
  margin: 0 0 0.65rem;
  color: var(--doan-blue-dark);
  font-size: clamp(1.55rem, 3vw, 2rem);
  line-height: 1.3;
}

.submission-page .intro-main > p {
  max-width: 680px;
  margin: 0;
  color: var(--gray-600);
  font-size: 0.96rem;
  line-height: 1.75;
}

.submission-page .hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.25rem;
}

.submission-page .hero-points > span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.68rem;
  border: 1px solid rgba(0, 102, 179, 0.13);
  border-radius: 10px;
  background: var(--gray-50);
  color: var(--gray-700);
  font-size: 0.79rem;
  font-weight: 600;
}

.submission-page .hero-points .material-symbols-outlined {
  color: var(--doan-blue);
  font-size: 1.03rem;
}

.submission-page .intro-side {
  padding: 1.4rem;
}

.submission-page .intro-side-heading {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--gray-200);
}

.submission-page .intro-side-icon {
  display: grid;
  width: 46px;
  height: 46px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 13px;
  background: linear-gradient(135deg, var(--doan-blue), var(--doan-blue-light));
  color: var(--white);
  box-shadow: 0 10px 20px rgba(0, 102, 179, 0.2);
}

.submission-page .intro-side-heading strong,
.submission-page .intro-side-heading span:not(.intro-side-icon) {
  display: block;
}

.submission-page .intro-side-heading strong {
  margin-bottom: 0.1rem;
  color: var(--gray-800);
  font-size: 0.93rem;
}

.submission-page .intro-side-heading span:not(.intro-side-icon) {
  color: var(--gray-500);
  font-size: 0.78rem;
}

.submission-page .preparation-list {
  display: grid;
  gap: 0.65rem;
  margin: 1rem 0;
  padding: 0;
  list-style: none;
}

.submission-page .preparation-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  color: var(--gray-700);
  font-size: 0.84rem;
}

.submission-page .preparation-list .material-symbols-outlined {
  margin-top: 0.14rem;
  color: var(--doan-blue);
  font-size: 1.05rem;
}

.submission-page .file-note {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  margin: 0;
  padding: 0.7rem 0.8rem;
  border-radius: 10px;
  background: var(--doan-blue-lighter);
  color: var(--doan-blue-dark);
  font-size: 0.77rem;
}

.submission-page .file-note .material-symbols-outlined {
  margin-top: 0.08rem;
  font-size: 1rem;
}

/* Workflow shell */
.submission-page .workflow-section {
  padding: 2rem 0 2.6rem;
  background:
    radial-gradient(circle at 90% 10%, rgba(0, 102, 179, 0.045), transparent 28%),
    var(--gray-50);
}

.submission-page .section-heading {
  margin-bottom: 1.35rem;
}

.submission-page .section-heading h2 {
  margin: 0 0 0.25rem;
  color: var(--doan-blue-dark);
  font-size: 1.35rem;
  line-height: 1.4;
}

.submission-page .section-heading p {
  margin: 0;
  color: var(--gray-600);
  font-size: 0.92rem;
}

.submission-page .student-session {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
  padding: 0.8rem 0.9rem;
  border: 1px solid rgba(16, 185, 129, 0.24);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(236, 253, 245, 0.96), rgba(240, 253, 250, 0.96));
  box-shadow: var(--shadow-sm);
}

.submission-page .session-identity {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.7rem;
}

.submission-page .session-avatar {
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--success);
  color: var(--white);
}

.submission-page .session-identity > div {
  min-width: 0;
}

.submission-page .session-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.45rem;
}

.submission-page .session-label,
.submission-page #studentSessionText {
  display: block;
}

.submission-page .session-label {
  color: var(--success-dark);
  font-size: 0.72rem;
  font-weight: 600;
}

.submission-page #studentSessionText {
  overflow: hidden;
  color: var(--gray-800);
  font-size: 0.88rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Stepper */
.submission-page .stepper {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.8rem;
  margin: 0 0 1rem;
  padding: 0;
  list-style: none;
}

.submission-page .stepper li {
  position: relative;
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  background: var(--white);
  color: var(--gray-500);
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.submission-page .stepper li::after {
  position: absolute;
  right: -20px;
  bottom: -28px;
  width: 75px;
  height: 75px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.06);
  content: '';
}

.submission-page .step-marker {
  position: relative;
  z-index: 1;
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-500);
  font-size: 0.78rem;
  font-weight: 700;
}

.submission-page .step-check {
  display: none;
  font-size: 1.05rem;
  font-weight: 700;
}

.submission-page .step-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.submission-page .step-copy strong,
.submission-page .step-copy small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.submission-page .step-copy strong {
  color: var(--gray-700);
  font-size: 0.86rem;
}

.submission-page .step-copy small {
  margin-top: 0.05rem;
  color: var(--gray-500);
  font-size: 0.7rem;
}

.submission-page .stepper li.active {
  border-color: rgba(0, 102, 179, 0.48);
  background: linear-gradient(135deg, var(--white), #f1f9ff);
  box-shadow: 0 10px 24px rgba(0, 102, 179, 0.11);
  transform: translateY(-1px);
}

.submission-page .stepper li.active .step-marker {
  background: linear-gradient(135deg, var(--doan-blue), var(--doan-blue-light));
  color: var(--white);
  box-shadow: 0 7px 14px rgba(0, 102, 179, 0.24);
}

.submission-page .stepper li.active .step-copy strong {
  color: var(--doan-blue-dark);
}

.submission-page .stepper li.done {
  border-color: rgba(16, 185, 129, 0.28);
  background: #f8fffb;
}

.submission-page .stepper li.done .step-marker {
  background: var(--success);
  color: var(--white);
}

.submission-page .stepper li.done .step-number {
  display: none;
}

.submission-page .stepper li.done .step-check {
  display: block;
}

.submission-page .stepper li.done .step-copy strong {
  color: var(--success-dark);
}

.submission-page .workflow-message {
  margin-bottom: 1rem;
}

/* Cards and headings */
.submission-page .workflow-card {
  position: relative;
  padding: 1.5rem;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.96);
  border-radius: 20px;
  background:
    radial-gradient(circle at top right, rgba(0, 102, 179, 0.05), transparent 28%),
    var(--white);
  box-shadow: var(--shadow-lg);
}

.submission-page .workflow-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--doan-blue), var(--doan-blue-light));
  content: '';
}

.submission-page .workflow-card:focus {
  outline: none;
}

.submission-page .panel-heading,
.submission-page .panel-heading-main {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.submission-page .panel-heading {
  margin-bottom: 1.25rem;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--gray-200);
}

.submission-page .panel-heading-split {
  justify-content: space-between;
}

.submission-page .panel-heading-main {
  min-width: 0;
}

.submission-page .panel-icon {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--doan-blue), var(--doan-blue-light));
  color: var(--white);
  font-size: 1.5rem;
  box-shadow: 0 10px 20px rgba(0, 102, 179, 0.2);
}

.submission-page .panel-heading > div,
.submission-page .panel-heading-main > div {
  min-width: 0;
}

.submission-page .panel-eyebrow {
  display: block;
  margin-bottom: 0.08rem;
  color: var(--doan-blue);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.submission-page .panel-heading h2 {
  margin: 0;
  color: var(--gray-800);
  font-size: 1.18rem;
  line-height: 1.4;
}

.submission-page .panel-heading p {
  margin: 0.18rem 0 0;
  color: var(--gray-500);
  font-size: 0.84rem;
}

.submission-page .content-section,
.submission-page .form-section {
  padding: 1.15rem;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  background: rgba(248, 250, 252, 0.72);
}

.submission-page .content-section + .content-section,
.submission-page .form-section + .form-section,
.submission-page .alert + .form-section {
  margin-top: 1rem;
}

.submission-page .subsection-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.submission-page .subsection-heading h3 {
  margin: 0.1rem 0 0;
  color: var(--gray-800);
  font-size: 1rem;
}

.submission-page .subsection-heading p {
  margin: 0.2rem 0 0;
  color: var(--gray-500);
  font-size: 0.8rem;
}

.submission-page .subsection-kicker {
  display: block;
  color: var(--doan-blue);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.submission-page .verified-badge,
.submission-page .required-note,
.submission-page .file-rule {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.3rem;
  padding: 0.36rem 0.58rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
}

.submission-page .verified-badge {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success-dark);
}

.submission-page .verified-badge .material-symbols-outlined,
.submission-page .file-rule .material-symbols-outlined {
  font-size: 0.95rem;
}

.submission-page .required-note {
  background: var(--gray-100);
  color: var(--gray-500);
}

.submission-page .file-rule {
  border: 1px solid rgba(0, 102, 179, 0.14);
  background: var(--doan-blue-lighter);
  color: var(--doan-blue-dark);
}

/* Authentication */
.submission-page .auth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  gap: 1rem;
  align-items: stretch;
}

.submission-page .auth-form-card,
.submission-page .trust-card {
  padding: 1.25rem;
  border: 1px solid var(--gray-200);
  border-radius: 16px;
}

.submission-page .auth-form-card {
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.submission-page .trust-card {
  background:
    radial-gradient(circle at top right, rgba(0, 102, 179, 0.1), transparent 36%),
    linear-gradient(145deg, #f4faff, #eef7fd);
}

.submission-page .trust-icon {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border-radius: 14px;
  background: var(--white);
  color: var(--doan-blue);
  box-shadow: var(--shadow-sm);
}

.submission-page .trust-card h3 {
  margin: 0.85rem 0 0.35rem;
  color: var(--doan-blue-dark);
  font-size: 0.98rem;
}

.submission-page .trust-card > p {
  margin: 0;
  color: var(--gray-600);
  font-size: 0.82rem;
}

.submission-page .trust-card ul {
  display: grid;
  gap: 0.55rem;
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
}

.submission-page .trust-card li {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--gray-700);
  font-size: 0.78rem;
  font-weight: 500;
}

.submission-page .trust-card li .material-symbols-outlined {
  color: var(--success);
  font-size: 1.02rem;
}

/* Forms and buttons */
.submission-page .field {
  min-width: 0;
}

.submission-page .field label {
  display: flex;
  align-items: center;
  gap: 0.42rem;
  margin-bottom: 0.48rem;
  color: var(--gray-700);
  font-size: 0.84rem;
  font-weight: 600;
}

.submission-page .field label .material-symbols-outlined {
  color: var(--doan-blue);
  font-size: 1.05rem;
}

.submission-page .field input,
.submission-page .field select,
.submission-page .field textarea {
  width: 100%;
  min-height: 46px;
  padding: 0.72rem 0.82rem;
  border: 2px solid var(--gray-200);
  border-radius: 10px;
  outline: none;
  background: var(--white);
  color: var(--gray-800);
  font-size: 0.9rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.submission-page .field textarea {
  min-height: 112px;
  line-height: 1.55;
  resize: vertical;
}

.submission-page .field input::placeholder,
.submission-page .field textarea::placeholder {
  color: var(--gray-400);
}

.submission-page .field input:focus,
.submission-page .field select:focus,
.submission-page .field textarea:focus {
  border-color: var(--doan-blue);
  box-shadow: 0 0 0 4px rgba(0, 102, 179, 0.1);
}

.submission-page .field input:user-invalid,
.submission-page .field select:user-invalid {
  border-color: rgba(239, 68, 68, 0.7);
}

.submission-page .input-with-icon {
  position: relative;
}

.submission-page .input-with-icon > .material-symbols-outlined {
  position: absolute;
  top: 50%;
  left: 0.9rem;
  z-index: 1;
  color: var(--gray-400);
  font-size: 1.2rem;
  transform: translateY(-50%);
  pointer-events: none;
}

.submission-page .input-with-icon input {
  padding-left: 2.75rem;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.submission-page .field-help {
  display: block;
  margin-top: 0.4rem;
  color: var(--gray-500);
  font-size: 0.73rem;
  line-height: 1.5;
}

.submission-page .field-help-danger {
  color: var(--danger-dark);
}

.submission-page .student-note-field {
  grid-column: 1 / -1;
}

.submission-page .field-optional {
  margin-left: auto;
  color: var(--gray-500);
  font-size: 0.68rem;
  font-weight: 500;
}

.submission-page .field-help-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
}

.submission-page .field-help-row .field-help {
  margin-top: 0.4rem;
}

.submission-page .student-note-counter {
  flex: 0 0 auto;
  margin-top: 0.4rem;
  color: var(--gray-500);
  font-size: 0.7rem;
  font-variant-numeric: tabular-nums;
}

.submission-page .form-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.submission-page .req {
  color: var(--danger);
}

.submission-page .btn {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.68rem 1rem;
  border: 1px solid transparent;
  border-radius: 9px;
  cursor: pointer;
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.25;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.submission-page .btn .material-symbols-outlined {
  font-size: 1.08rem;
}

.submission-page .btn:hover:not(:disabled) {
  transform: translateY(-1px);
}

.submission-page .btn:focus-visible {
  outline: 3px solid rgba(0, 102, 179, 0.2);
  outline-offset: 2px;
}

.submission-page .btn:disabled {
  cursor: not-allowed;
  opacity: 0.65;
  transform: none;
}

.submission-page .btn-primary {
  border-color: var(--doan-blue);
  background: linear-gradient(135deg, var(--doan-blue), var(--doan-blue-light));
  color: var(--white);
  box-shadow: 0 8px 18px rgba(0, 102, 179, 0.22);
}

.submission-page .btn-primary:hover:not(:disabled) {
  border-color: var(--doan-blue-dark);
  background: linear-gradient(135deg, var(--doan-blue-dark), var(--doan-blue));
  box-shadow: 0 10px 22px rgba(0, 102, 179, 0.27);
}

.submission-page .btn-secondary,
.submission-page .btn-ghost {
  border-color: var(--gray-300);
  background: var(--white);
  color: var(--gray-700);
}

.submission-page .btn-secondary:hover:not(:disabled),
.submission-page .btn-ghost:hover:not(:disabled) {
  border-color: var(--doan-blue);
  background: var(--doan-blue-lighter);
  color: var(--doan-blue-dark);
}

.submission-page .btn-danger {
  border-color: #fecaca;
  background: var(--white);
  color: var(--danger-dark);
}

.submission-page .btn-danger:hover:not(:disabled) {
  border-color: var(--danger);
  background: #fff5f5;
}

.submission-page .btn-sm {
  min-height: 36px;
  padding: 0.48rem 0.72rem;
  font-size: 0.76rem;
}

.submission-page .btn-block {
  width: 100%;
}

.submission-page .spinner-icon {
  animation: spin 0.85s linear infinite;
}

/* Alerts */
.submission-page .alert,
.submission-page .upload-status,
.submission-page .form-feedback,
.submission-page .workflow-message {
  padding: 0.82rem 0.9rem;
  border: 1px solid;
  border-radius: 11px;
  font-size: 0.81rem;
  line-height: 1.55;
}

.submission-page .alert {
  margin: 0.8rem 0;
}

.submission-page .alert-info,
.submission-page .message-info {
  border-color: #bae6fd;
  background: #f0f9ff;
  color: #075985;
}

.submission-page .alert-success,
.submission-page .message-success {
  border-color: #a7f3d0;
  background: #ecfdf5;
  color: var(--success-dark);
}

.submission-page .alert-warning,
.submission-page .message-warning,
.submission-page .form-feedback {
  border-color: #fcd34d;
  background: #fffbeb;
  color: var(--warning-dark);
}

.submission-page .alert-danger,
.submission-page .message-danger {
  border-color: #fecaca;
  background: #fef2f2;
  color: var(--danger-dark);
}

.submission-page .alert strong,
.submission-page .form-feedback strong {
  color: inherit;
}

/* Summary and campaigns */
.submission-page .summary-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
}

.submission-page .summary-item {
  min-width: 0;
  padding: 0.78rem 0.82rem;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.submission-page .summary-item .label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-bottom: 0.18rem;
  color: var(--gray-500);
  font-size: 0.69rem;
  font-weight: 600;
}

.submission-page .summary-item .label .material-symbols-outlined {
  color: var(--doan-blue);
  font-size: 0.92rem;
}

.submission-page .summary-item .value {
  display: block;
  overflow-wrap: anywhere;
  color: var(--gray-800);
  font-size: 0.84rem;
  font-weight: 600;
}

.submission-page .campaign-section {
  margin-top: 1rem;
}

.submission-page .campaign-list {
  display: grid;
  gap: 0.8rem;
}

.submission-page .campaign-item {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.submission-page .campaign-item.accepting {
  border-color: rgba(0, 102, 179, 0.32);
  background: linear-gradient(135deg, var(--white), #f6fbff);
}

.submission-page .campaign-item.accepting::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--doan-blue), var(--doan-blue-light));
  content: '';
}

.submission-page .campaign-main {
  min-width: 0;
}

.submission-page .campaign-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.38rem;
}

.submission-page .campaign-item h4 {
  margin: 0;
  color: var(--gray-800);
  font-size: 0.94rem;
}

.submission-page .campaign-description {
  margin: 0 0 0.52rem;
  color: var(--gray-600);
  font-size: 0.78rem;
}

.submission-page .campaign-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.9rem;
  color: var(--gray-500);
  font-size: 0.72rem;
}

.submission-page .campaign-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
}

.submission-page .campaign-meta .material-symbols-outlined {
  color: var(--doan-blue);
  font-size: 0.92rem;
}

.submission-page .campaign-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.submission-page .badge,
.submission-page .status-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.32rem 0.58rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  white-space: nowrap;
}

.submission-page .badge .material-symbols-outlined {
  font-size: 0.9rem;
}

.submission-page .badge-open,
.submission-page .status-success {
  background: #dcfce7;
  color: #166534;
}

.submission-page .badge-upcoming,
.submission-page .status-warning {
  background: #fef3c7;
  color: var(--warning-dark);
}

.submission-page .badge-closed,
.submission-page .status-cancelled {
  background: var(--gray-100);
  color: var(--gray-600);
}

.submission-page .status-draft,
.submission-page .status-processing {
  background: var(--doan-blue-lighter);
  color: var(--doan-blue-dark);
}

.submission-page .empty-state {
  padding: 2rem 1rem;
  border: 1px dashed var(--gray-300);
  border-radius: 15px;
  background: var(--white);
  text-align: center;
}

.submission-page .empty-icon {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 0.8rem;
  place-items: center;
  border-radius: 50%;
  background: var(--gray-100);
  color: var(--gray-500);
  font-size: 1.7rem;
}

.submission-page .empty-state h3 {
  margin: 0 0 0.25rem;
  color: var(--gray-800);
  font-size: 1rem;
}

.submission-page .empty-state p {
  max-width: 520px;
  margin: 0 auto 0.9rem;
  color: var(--gray-500);
  font-size: 0.8rem;
}

/* Completion */
.submission-page .completion-card {
  margin-bottom: 1rem;
  padding: 1rem 1.1rem;
  border: 1px solid rgba(0, 102, 179, 0.16);
  border-radius: 15px;
  background: linear-gradient(135deg, #f4faff, #fbfdff);
}

.submission-page .completion-topline {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.submission-page .completion-topline strong {
  display: block;
  color: var(--gray-800);
  font-size: 0.9rem;
}

.submission-page #completionPercent {
  color: var(--doan-blue-dark);
  font-size: 1.15rem;
  font-weight: 700;
}

.submission-page .progress-track {
  height: 8px;
  margin-top: 0.7rem;
  overflow: hidden;
  border-radius: 999px;
  background: var(--gray-200);
}

.submission-page .progress-track > span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--doan-blue), var(--doan-blue-light));
  transition: width 0.35s ease;
}

.submission-page .completion-checks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.72rem;
}

.submission-page .completion-check {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  padding: 0.32rem 0.52rem;
  border: 1px solid var(--gray-200);
  border-radius: 999px;
  background: var(--white);
  color: var(--gray-500);
  font-size: 0.68rem;
  font-weight: 600;
}

.submission-page .completion-check.complete {
  border-color: rgba(16, 185, 129, 0.25);
  background: #f0fdf4;
  color: var(--success-dark);
}

.submission-page .completion-check .material-symbols-outlined {
  font-size: 0.88rem;
}

/* Attachments */
.submission-page .attachment-section {
  margin-top: 1rem;
}

.submission-page .upload-status {
  margin-bottom: 0.85rem;
}

.submission-page .attachment-groups {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.submission-page .attachment-group {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 0.9rem;
  border: 1px solid var(--gray-200);
  border-radius: 14px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.submission-page .attachment-group.complete {
  border-color: rgba(16, 185, 129, 0.32);
  background: linear-gradient(180deg, #fbfffd, var(--white));
}

.submission-page .attachment-group-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.55rem;
  margin-bottom: 0.65rem;
}

.submission-page .attachment-title {
  display: flex;
  min-width: 0;
  align-items: flex-start;
  gap: 0.48rem;
}

.submission-page .attachment-title > .material-symbols-outlined {
  margin-top: 0.06rem;
  color: var(--doan-blue);
  font-size: 1.15rem;
}

.submission-page .attachment-title h4 {
  margin: 0;
  color: var(--gray-800);
  font-size: 0.78rem;
  line-height: 1.45;
}

.submission-page .attachment-title small {
  display: block;
  margin-top: 0.12rem;
  color: var(--gray-500);
  font-size: 0.66rem;
}

.submission-page .file-count {
  flex: 0 0 auto;
  padding: 0.25rem 0.45rem;
  border-radius: 999px;
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: 0.65rem;
  font-weight: 700;
}

.submission-page .attachment-group.complete .file-count {
  background: #dcfce7;
  color: #166534;
}

.submission-page .upload-zone {
  display: flex;
  min-height: 92px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.8rem;
  border: 1.5px dashed #9dcbe5;
  border-radius: 11px;
  background: #f7fcff;
  color: var(--doan-blue-dark);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.submission-page .upload-zone:hover:not(.disabled),
.submission-page .upload-zone:focus-within:not(.disabled) {
  border-color: var(--doan-blue);
  background: var(--doan-blue-lighter);
  transform: translateY(-1px);
}

.submission-page .upload-zone.disabled {
  border-color: var(--gray-200);
  background: var(--gray-50);
  color: var(--gray-400);
  cursor: not-allowed;
}

.submission-page .upload-zone > .material-symbols-outlined {
  font-size: 1.45rem;
}

.submission-page .upload-zone strong {
  font-size: 0.73rem;
}

.submission-page .upload-zone small {
  color: var(--gray-500);
  font-size: 0.64rem;
}

.submission-page .file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
  white-space: nowrap;
}

.submission-page .file-list {
  display: grid;
  gap: 0.45rem;
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
}

.submission-page .file-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  margin-top: 0.62rem;
  color: var(--gray-400);
  font-size: 0.68rem;
}

.submission-page .file-empty .material-symbols-outlined {
  font-size: 0.92rem;
}

.submission-page .file-item {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 0.45rem;
  padding: 0.48rem;
  border: 1px solid var(--gray-200);
  border-radius: 9px;
  background: var(--gray-50);
}

.submission-page .file-details {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.42rem;
}

.submission-page .file-type-icon {
  display: grid;
  width: 29px;
  height: 29px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 8px;
  background: var(--doan-blue-lighter);
  color: var(--doan-blue);
  font-size: 1rem;
}

.submission-page .file-name {
  display: block;
  max-width: 125px;
  overflow: hidden;
  color: var(--gray-700);
  font-size: 0.67rem;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.submission-page .file-size {
  display: block;
  color: var(--gray-500);
  font-size: 0.61rem;
}

.submission-page .file-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 0.25rem;
}

.submission-page .icon-btn {
  display: grid;
  width: 30px;
  height: 30px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  background: var(--white);
  color: var(--gray-600);
  cursor: pointer;
}

.submission-page .icon-btn:hover:not(:disabled) {
  border-color: var(--doan-blue);
  color: var(--doan-blue);
}

.submission-page .icon-btn.remove:hover:not(:disabled) {
  border-color: var(--danger);
  color: var(--danger);
}

.submission-page .icon-btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.submission-page .icon-btn .material-symbols-outlined {
  font-size: 1rem;
}

.submission-page .form-feedback {
  margin-top: 1rem;
}

.submission-page .form-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--gray-200);
}

.submission-page .action-spacer {
  flex: 1;
}

/* Tracking */
.submission-page .tracking-hero {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 1rem;
  padding: 1.05rem;
  border: 1px solid rgba(0, 102, 179, 0.18);
  border-radius: 15px;
  background: linear-gradient(135deg, #f3faff, #fbfdff);
}

.submission-page .tracking-hero.success {
  border-color: rgba(16, 185, 129, 0.25);
  background: linear-gradient(135deg, #effdf6, #fbfffd);
}

.submission-page .tracking-hero.warning {
  border-color: rgba(245, 158, 11, 0.3);
  background: linear-gradient(135deg, #fffbeb, #fffdf7);
}

.submission-page .tracking-hero.cancelled {
  border-color: var(--gray-200);
  background: linear-gradient(135deg, var(--gray-100), var(--white));
}

.submission-page .tracking-status-icon {
  display: grid;
  width: 52px;
  height: 52px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--doan-blue);
  color: var(--white);
  font-size: 1.55rem;
  box-shadow: 0 9px 18px rgba(0, 102, 179, 0.2);
}

.submission-page .tracking-hero.success .tracking-status-icon {
  background: var(--success);
  box-shadow: 0 9px 18px rgba(16, 185, 129, 0.2);
}

.submission-page .tracking-hero.warning .tracking-status-icon {
  background: var(--warning);
  box-shadow: 0 9px 18px rgba(245, 158, 11, 0.2);
}

.submission-page .tracking-hero.cancelled .tracking-status-icon {
  background: var(--gray-500);
  box-shadow: 0 9px 18px rgba(100, 116, 139, 0.18);
}

.submission-page .tracking-status-copy {
  min-width: 0;
}

.submission-page .tracking-status-copy span,
.submission-page .tracking-status-copy strong,
.submission-page .tracking-status-copy p {
  display: block;
}

.submission-page .tracking-status-copy > span {
  color: var(--gray-500);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.submission-page .tracking-status-copy strong {
  margin: 0.08rem 0;
  color: var(--gray-800);
  font-size: 1.05rem;
}

.submission-page .tracking-status-copy p {
  margin: 0;
  color: var(--gray-600);
  font-size: 0.78rem;
}

.submission-page .tracking-summary {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-bottom: 1rem;
}

.submission-page .next-step-card {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin: 1rem 0;
  padding: 0.9rem;
  border: 1px solid rgba(0, 102, 179, 0.15);
  border-radius: 12px;
  background: var(--doan-blue-lighter);
  color: var(--doan-blue-dark);
  font-size: 0.8rem;
}

.submission-page .next-step-card .material-symbols-outlined {
  margin-top: 0.05rem;
  font-size: 1.15rem;
}

.submission-page .timeline-section {
  margin-top: 1rem;
}

.submission-page .timeline {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.submission-page .timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 0.65rem;
  padding-bottom: 0.9rem;
}

.submission-page .timeline-item:last-child {
  padding-bottom: 0;
}

.submission-page .timeline-marker {
  position: relative;
  z-index: 1;
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  border: 2px solid #b9daf0;
  border-radius: 50%;
  background: var(--white);
  color: var(--doan-blue);
}

.submission-page .timeline-marker .material-symbols-outlined {
  font-size: 0.95rem;
}

.submission-page .timeline-item:not(:last-child) .timeline-marker::after {
  position: absolute;
  top: 29px;
  left: 50%;
  width: 2px;
  height: calc(100% + 0.9rem);
  background: var(--gray-200);
  content: '';
  transform: translateX(-50%);
}

.submission-page .timeline-content {
  min-width: 0;
  padding: 0.12rem 0 0;
}

.submission-page .timeline-content strong {
  display: block;
  color: var(--gray-800);
  font-size: 0.8rem;
}

.submission-page .timeline-content p {
  margin: 0.1rem 0;
  color: var(--gray-600);
  font-size: 0.73rem;
}

.submission-page .timeline-content time {
  color: var(--gray-500);
  font-size: 0.66rem;
}

.submission-page .timeline-empty {
  padding: 1rem;
  color: var(--gray-500);
  font-size: 0.78rem;
  text-align: center;
}

.submission-page .tracking-actions {
  justify-content: flex-end;
}

/* Footer */
.submission-page .site-footer {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: auto;
  padding: clamp(2.8rem, 5vw, 4rem) 0 1.2rem;
  border-top: 1px solid rgba(41, 151, 255, 0.42);
  background:
    radial-gradient(circle at 10% -20%, rgba(41, 151, 255, 0.2), transparent 34%),
    radial-gradient(circle at 92% 8%, rgba(0, 88, 176, 0.14), transparent 28%),
    linear-gradient(145deg, #121d29 0%, #111417 50%, #090b0f 100%);
  color: #c5d1de;
}

.submission-page .site-footer::before {
  position: absolute;
  z-index: 1;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 2%, var(--doan-blue-light) 30%, var(--doan-blue) 68%, transparent 98%);
  content: '';
}

.submission-page .site-footer::after {
  position: absolute;
  z-index: -1;
  right: -7rem;
  bottom: -13rem;
  width: 30rem;
  height: 30rem;
  border: 1px solid rgba(41, 151, 255, 0.08);
  border-radius: 50%;
  box-shadow:
    0 0 0 3.5rem rgba(41, 151, 255, 0.025),
    0 0 0 7rem rgba(41, 151, 255, 0.018);
  content: '';
  pointer-events: none;
}

.submission-page .footer-event-cta {
  position: relative;
  z-index: 1;
  display: grid;
  overflow: hidden;
  margin-bottom: clamp(2.4rem, 4vw, 3.2rem);
  padding: 1.05rem 1.15rem;
  grid-template-columns: 54px minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  border: 1px solid rgba(134, 196, 255, 0.25);
  border-radius: 18px;
  background:
    radial-gradient(circle at 78% -90%, rgba(255, 255, 255, 0.2), transparent 38%),
    linear-gradient(105deg, rgba(0, 113, 227, 0.32), rgba(0, 88, 176, 0.12) 58%, rgba(255, 255, 255, 0.045));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 16px 36px rgba(0, 0, 0, 0.16);
}

.submission-page .footer-event-cta::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: linear-gradient(180deg, #8dcbff, var(--doan-blue));
  content: '';
}

.submission-page .footer-event-cta::after {
  position: absolute;
  right: 12rem;
  bottom: -5.5rem;
  width: 11rem;
  height: 11rem;
  border: 1px solid rgba(134, 196, 255, 0.1);
  border-radius: 50%;
  content: '';
  pointer-events: none;
}

.submission-page .footer-event-visual {
  position: relative;
  z-index: 1;
  display: grid;
  width: 54px;
  height: 54px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.11);
  color: #d9edff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.submission-page .footer-event-visual .material-symbols-outlined {
  font-size: 1.7rem;
  font-variation-settings: 'FILL' 1, 'wght' 500, 'GRAD' 0, 'opsz' 24;
}

.submission-page .footer-event-content {
  position: relative;
  z-index: 1;
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.45;
}

.submission-page .footer-event-kicker {
  margin-bottom: 0.12rem;
  color: #9ed0ff;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.submission-page .footer-event-content > strong {
  color: var(--white);
  font-size: clamp(0.96rem, 1.4vw, 1.08rem);
  font-weight: 700;
  line-height: 1.35;
}

.submission-page .footer-event-content > span:last-child {
  margin-top: 0.16rem;
  color: #afc3d6;
  font-size: 0.78rem;
}

.submission-page .footer-event-button {
  position: relative;
  z-index: 1;
  display: inline-flex;
  min-height: 44px;
  padding: 0.68rem 0.9rem;
  align-items: center;
  justify-content: center;
  gap: 0.48rem;
  border: 1px solid rgba(255, 255, 255, 0.82);
  border-radius: 12px;
  background: linear-gradient(135deg, #ffffff, #e4f2ff);
  color: var(--doan-blue-dark);
  box-shadow: 0 9px 22px rgba(0, 0, 0, 0.19);
  font-size: 0.78rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.submission-page .footer-event-button .material-symbols-outlined {
  font-size: 1.1rem;
}

.submission-page .footer-event-button-arrow {
  transition: transform 180ms ease;
}

.submission-page .footer-event-button:hover,
.submission-page .footer-event-button:focus-visible {
  background: var(--white);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  transform: translateY(-2px);
}

.submission-page .footer-event-button:hover .footer-event-button-arrow,
.submission-page .footer-event-button:focus-visible .footer-event-button-arrow {
  transform: translate(2px, -2px);
}

.submission-page .footer-event-button:focus-visible {
  outline: 2px solid #86c4ff;
  outline-offset: 3px;
}

@media (max-width: 768px) {
  .submission-page .footer-event-cta {
    grid-template-columns: 50px minmax(0, 1fr);
  }

  .submission-page .footer-event-visual {
    width: 50px;
    height: 50px;
  }

  .submission-page .footer-event-button {
    width: 100%;
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .submission-page .footer-event-cta {
    padding: 0.9rem;
    gap: 0.8rem;
  }

  .submission-page .footer-event-visual {
    width: 44px;
    height: 44px;
    border-radius: 13px;
  }

  .submission-page .footer-event-visual .material-symbols-outlined {
    font-size: 1.45rem;
  }

  .submission-page .footer-event-content > span:last-child {
    font-size: 0.73rem;
  }
}

.submission-page .footer-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(200px, 0.8fr) minmax(270px, 1fr);
  align-items: start;
  gap: clamp(2rem, 4vw, 4rem);
}

.submission-page .footer-column {
  min-width: 0;
}

.submission-page .footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--white);
  text-decoration: none;
}

.submission-page .footer-logos {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.45rem;
}

.submission-page .footer-logo {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  padding: 0.35rem;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.submission-page .footer-logo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.submission-page .footer-brand:hover .footer-logo {
  transform: translateY(-2px);
  box-shadow: 0 13px 28px rgba(0, 0, 0, 0.25);
}

.submission-page .footer-brand-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.25;
}

.submission-page .footer-brand-copy > span {
  color: #86c4ff;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.submission-page .footer-brand-copy strong {
  margin-top: 0.2rem;
  color: var(--white);
  font-size: 1.2rem;
  letter-spacing: 0.04em;
}

.submission-page .footer-text {
  max-width: 37rem;
  margin: 1.15rem 0 0;
  color: #aab8c7;
  font-size: 0.86rem;
  line-height: 1.72;
}

.submission-page .footer-schedule {
  display: grid;
  max-width: 31rem;
  margin-top: 1.15rem;
  padding: 0.75rem 0.85rem;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  border: 1px solid rgba(134, 196, 255, 0.14);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.045);
}

.submission-page .footer-schedule > .material-symbols-outlined {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 11px;
  background: rgba(41, 151, 255, 0.14);
  color: #86c4ff;
  font-size: 1.25rem;
}

.submission-page .footer-schedule-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  line-height: 1.45;
}

.submission-page .footer-schedule-copy > span {
  color: #8294a6;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.submission-page .footer-schedule-copy strong {
  color: #edf5fc;
  font-size: 0.81rem;
  font-weight: 600;
}

.submission-page .footer-schedule-copy small {
  color: #8fa0b0;
  font-size: 0.72rem;
}

.submission-page .footer-social {
  display: flex;
  margin-top: 1rem;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.submission-page .footer-social-label {
  margin-right: 0.15rem;
  color: #8294a6;
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.submission-page .footer-social-link {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(134, 196, 255, 0.16);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.055);
  color: #9dceff;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.submission-page .footer-social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.submission-page .footer-social-link .material-symbols-outlined {
  font-size: 1.15rem;
}

.submission-page .footer-social-link:hover,
.submission-page .footer-social-link:focus-visible {
  border-color: rgba(134, 196, 255, 0.45);
  background: var(--doan-blue);
  color: var(--white);
  transform: translateY(-2px);
}

.submission-page .footer-social-link:focus-visible,
.submission-page .footer-brand:focus-visible,
.submission-page .footer-link:focus-visible,
.submission-page .footer-contact-item:focus-visible {
  outline: 2px solid #86c4ff;
  outline-offset: 3px;
}

.submission-page .footer-title {
  display: flex;
  margin: 0 0 1rem;
  align-items: center;
  gap: 0.55rem;
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

.submission-page .footer-title .material-symbols-outlined {
  color: #86c4ff;
  font-size: 1.2rem;
}

.submission-page .footer-links {
  display: grid;
  gap: 0.42rem;
}

.submission-page .footer-link {
  display: flex;
  min-height: 42px;
  margin-left: -0.55rem;
  padding: 0.48rem 0.55rem;
  align-items: center;
  gap: 0.65rem;
  border: 1px solid transparent;
  border-radius: 11px;
  color: #b8c5d2;
  font-size: 0.82rem;
  text-decoration: none;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, color 180ms ease;
}

.submission-page .footer-link-icon {
  display: grid;
  width: 31px;
  height: 31px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 9px;
  background: rgba(41, 151, 255, 0.1);
  color: #86c4ff;
  font-size: 1.05rem;
}

.submission-page .footer-link-arrow {
  margin-left: auto;
  color: #617487;
  font-size: 0.98rem;
  transition: transform 180ms ease, color 180ms ease;
}

.submission-page .footer-link:hover,
.submission-page .footer-link:focus-visible {
  border-color: rgba(134, 196, 255, 0.14);
  background: rgba(255, 255, 255, 0.045);
  color: var(--white);
  transform: translateX(3px);
}

.submission-page .footer-link:hover .footer-link-arrow,
.submission-page .footer-link:focus-visible .footer-link-arrow {
  color: #86c4ff;
  transform: translateX(2px);
}

.submission-page .footer-link[aria-current='page'] {
  border-color: rgba(41, 151, 255, 0.22);
  background: rgba(41, 151, 255, 0.11);
  color: #eaf5ff;
}

.submission-page .footer-contact {
  display: grid;
  gap: 0.62rem;
  margin: 0;
  font-style: normal;
  text-align: left;
}

.submission-page .footer-contact-item {
  display: grid;
  min-width: 0;
  padding: 0.72rem;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: start;
  gap: 0.7rem;
  border: 1px solid rgba(134, 196, 255, 0.12);
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.035);
  color: #b8c5d2;
  text-decoration: none;
}

.submission-page a.footer-contact-item {
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.submission-page a.footer-contact-item:hover,
.submission-page a.footer-contact-item:focus-visible {
  border-color: rgba(134, 196, 255, 0.32);
  background: rgba(255, 255, 255, 0.065);
  transform: translateY(-2px);
}

.submission-page .footer-contact-icon {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 11px;
  background: rgba(41, 151, 255, 0.12);
  color: #86c4ff;
  font-size: 1.15rem;
}

.submission-page .footer-contact-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  color: #b8c5d2;
  font-size: 0.78rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.submission-page .footer-contact-label {
  margin-bottom: 0.08rem;
  color: #788b9e;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.submission-page .footer-contact-copy strong {
  color: #ddecf9;
  font-size: 0.78rem;
  font-weight: 600;
}

.submission-page .footer-bottom {
  position: relative;
  z-index: 1;
  display: flex;
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.05rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-top: 1px solid rgba(134, 196, 255, 0.12);
  color: #728599;
  font-size: 0.72rem;
}

.submission-page .footer-bottom p {
  margin: 0;
}

.submission-page .footer-assurance {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.submission-page .footer-assurance .material-symbols-outlined {
  color: #86c4ff;
  font-size: 1rem;
}

@media (max-width: 960px) {
  .submission-page .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .submission-page .footer-about {
    grid-column: 1 / -1;
  }

  .submission-page .footer-schedule {
    max-width: 37rem;
  }
}

@media (max-width: 768px) {
  .submission-page .site-footer {
    padding-top: 2.6rem;
  }

  .submission-page .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.2rem;
  }

  .submission-page .footer-about {
    grid-column: auto;
  }

  .submission-page .footer-link {
    margin-left: 0;
  }

  .submission-page .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .submission-page .footer-brand {
    align-items: flex-start;
  }

  .submission-page .footer-logo {
    width: 46px;
    height: 46px;
    border-radius: 13px;
  }

  .submission-page .footer-brand-copy > span {
    font-size: 0.61rem;
  }

  .submission-page .footer-brand-copy strong {
    font-size: 1.05rem;
  }

  .submission-page .footer-social-label {
    width: 100%;
  }
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1024px) {
  .submission-page .header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .submission-page .header-actions {
    width: 100%;
    justify-content: flex-start;
  }

  .submission-page .intro-grid,
  .submission-page .auth-layout {
    grid-template-columns: 1fr;
  }

  .submission-page .stepper {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .submission-page .form-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .submission-page .attachment-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .submission-page .tracking-summary {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .submission-page .site-header {
    position: static;
  }

  .submission-page .intro-section {
    padding: 1.35rem 0;
  }

  .submission-page .intro-main,
  .submission-page .intro-side,
  .submission-page .workflow-card {
    padding: 1.15rem;
  }

  .submission-page .header-link-optional {
    display: none;
  }

  .submission-page .summary-grid,
  .submission-page .tracking-summary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .submission-page .panel-heading-split {
    align-items: flex-start;
  }

  .submission-page .campaign-item {
    grid-template-columns: 1fr;
  }

  .submission-page .campaign-actions {
    align-items: stretch;
    flex-direction: row;
    justify-content: space-between;
  }

  .submission-page .attachment-groups {
    grid-template-columns: 1fr;
  }

  .submission-page .file-name {
    max-width: min(50vw, 340px);
  }

  .submission-page .footer-grid {
    grid-template-columns: 1fr;
  }

  .submission-page .footer-contact {
    text-align: left;
  }
}

@media (max-width: 600px) {
  .submission-page .container {
    padding: 0 0.9rem;
  }

  .submission-page .logo-item {
    width: 39px;
    height: 39px;
  }

  .submission-page .brand-text strong {
    font-size: 0.91rem;
  }

  .submission-page .brand-text small {
    font-size: 0.72rem;
  }

  .submission-page .header-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .submission-page .header-link {
    min-width: 0;
    justify-content: center;
    padding: 0.53rem 0.4rem;
    font-size: 0.71rem;
  }

  .submission-page .header-link .material-symbols-outlined {
    display: none;
  }

  .submission-page .workflow-section {
    padding-top: 1.35rem;
  }

  .submission-page .stepper {
    gap: 0.55rem;
  }

  .submission-page .stepper li {
    gap: 0.5rem;
    padding: 0.68rem;
  }

  .submission-page .step-marker {
    width: 29px;
    height: 29px;
  }

  .submission-page .step-copy strong {
    font-size: 0.76rem;
  }

  .submission-page .step-copy small {
    display: none;
  }

  .submission-page .panel-heading,
  .submission-page .panel-heading-main {
    align-items: flex-start;
  }

  .submission-page .panel-heading-split {
    flex-direction: column;
  }

  .submission-page .panel-heading-split > .btn {
    width: 100%;
  }

  .submission-page .panel-icon {
    width: 42px;
    height: 42px;
    font-size: 1.3rem;
  }

  .submission-page .panel-heading h2 {
    font-size: 1.04rem;
  }

  .submission-page .form-grid,
  .submission-page .summary-grid,
  .submission-page .tracking-summary {
    grid-template-columns: 1fr;
  }

  .submission-page .student-session {
    align-items: flex-start;
    flex-direction: column;
  }

  .submission-page .student-session .session-identity {
    width: 100%;
    align-items: flex-start;
  }

  .submission-page .student-session .session-identity > div {
    flex: 1 1 auto;
  }

  .submission-page #studentSessionText {
    overflow: visible;
    line-height: 1.45;
    overflow-wrap: anywhere;
    text-overflow: clip;
    white-space: normal;
  }

  .submission-page .student-session .session-actions {
    width: 100%;
    flex-direction: column;
  }

  .submission-page .student-session .btn {
    width: 100%;
  }

  .submission-page .subsection-heading,
  .submission-page .attachment-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .submission-page .campaign-actions {
    flex-direction: column;
  }

  .submission-page .form-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .submission-page .form-actions .btn {
    width: 100%;
  }

  .submission-page .action-spacer {
    display: none;
  }

  .submission-page .btn-cancel {
    order: 3;
  }

  .submission-page .tracking-hero {
    align-items: flex-start;
  }
}

@media (max-width: 380px) {
  .submission-page .brand {
    gap: 0.5rem;
  }

  .submission-page .logo-divider,
  .submission-page .brand .logo-item:nth-of-type(2) {
    display: none;
  }

  .submission-page .intro-main,
  .submission-page .intro-side,
  .submission-page .workflow-card {
    padding: 1rem;
  }

  .submission-page .stepper {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .submission-page *,
  .submission-page *::before,
  .submission-page *::after {
    scroll-behavior: auto !important;
    animation-delay: 0s !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-delay: 0s !important;
    transition-duration: 0.01ms !important;
  }
}

/* Hồ sơ đã gửi: cho phép chuyển giữa tab Hồ sơ và Theo dõi ở chế độ chỉ xem. */
.submission-page .stepper li.step-clickable {
  cursor: pointer;
}

.submission-page .stepper li.step-clickable:hover {
  border-color: rgba(0, 102, 179, 0.45);
  box-shadow: 0 10px 24px rgba(0, 102, 179, 0.1);
  transform: translateY(-1px);
}

.submission-page .stepper li.step-clickable:focus-visible {
  outline: 3px solid rgba(0, 102, 179, 0.22);
  outline-offset: 2px;
}

.submission-page.operation-busy .stepper li {
  pointer-events: none;
}

.submission-page #submissionForm.read-only input[readonly],
.submission-page #submissionForm.read-only select:disabled,
.submission-page #submissionForm.read-only textarea[readonly] {
  border-color: var(--gray-200);
  background: var(--gray-100);
  color: var(--gray-800);
  cursor: default;
  opacity: 1;
}

.submission-page #submissionForm.read-only .req {
  display: none;
}

/* Thumbnail minh chứng và popup xem lớn */
body.submission-page.evidence-lightbox-open {
  overflow: hidden;
}

.submission-page .file-item {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) auto;
  gap: 0.6rem;
  padding: 0.55rem;
}

.submission-page .file-copy {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.16rem;
}

.submission-page .file-name {
  max-width: none;
}

.submission-page .evidence-preview-button {
  display: block;
  width: 62px;
  height: 50px;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 8px;
  background: var(--doan-blue-lighter);
  color: var(--doan-blue);
  cursor: zoom-in;
}

.submission-page .evidence-preview-button:focus-visible {
  outline: 3px solid rgba(0, 102, 179, 0.22);
  outline-offset: 2px;
}

.submission-page .evidence-thumbnail {
  position: relative;
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: linear-gradient(135deg, #eef7fd, #dceef9);
}

.submission-page .evidence-thumbnail > .material-symbols-outlined {
  font-size: 1.5rem;
}

.submission-page .evidence-thumbnail img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.18s ease, opacity 0.16s ease;
}

.submission-page .evidence-preview-button:hover img {
  transform: scale(1.07);
}

.submission-page .evidence-thumbnail.is-loading::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 25%, rgba(255, 255, 255, 0.78) 48%, transparent 72%);
  background-size: 220% 100%;
  content: '';
  animation: evidence-loading 1.15s linear infinite;
}

.submission-page .evidence-thumbnail.is-ready > .material-symbols-outlined {
  display: none;
}

.submission-page .evidence-thumbnail.is-error {
  background: var(--gray-100);
  color: var(--gray-400);
}

.submission-page .evidence-file-thumbnail {
  flex-direction: column;
  gap: 0.02rem;
  background: #fff3ed;
  color: #c2410c;
}

.submission-page .evidence-file-thumbnail > .material-symbols-outlined {
  font-size: 1.45rem;
}

.submission-page .evidence-file-thumbnail small {
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.submission-page .icon-btn.preview {
  color: var(--doan-blue);
}

.submission-page .evidence-lightbox[hidden],
.submission-page .evidence-lightbox [hidden],
.submission-page .evidence-thumbnail img[hidden] {
  display: none !important;
}

.submission-page .evidence-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(8, 15, 30, 0.88);
  backdrop-filter: blur(8px);
}

.submission-page .evidence-lightbox-panel {
  display: flex;
  width: min(1100px, 96vw);
  max-height: 94vh;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 18px;
  background: #111a2a;
  color: #e8eef8;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.46);
  flex-direction: column;
}

.submission-page .evidence-lightbox-header,
.submission-page .evidence-lightbox-footer {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background: rgba(17, 26, 42, 0.97);
}

.submission-page .evidence-lightbox-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.submission-page .evidence-lightbox-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #93a4bc;
  font-size: 0.72rem;
}

.submission-page .evidence-lightbox-footer > span,
.submission-page .evidence-lightbox-download {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.submission-page .evidence-lightbox-footer .material-symbols-outlined {
  font-size: 1rem;
}

.submission-page .evidence-lightbox-heading {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.7rem;
}

.submission-page .evidence-lightbox-heading > div {
  min-width: 0;
}

.submission-page .evidence-lightbox-heading strong,
.submission-page .evidence-lightbox-heading div > span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.submission-page .evidence-lightbox-heading strong {
  max-width: min(65vw, 760px);
  color: var(--white);
  font-size: 0.88rem;
}

.submission-page .evidence-lightbox-heading div > span {
  margin-top: 0.12rem;
  color: #94a3b8;
  font-size: 0.7rem;
}

.submission-page .evidence-lightbox-icon {
  display: grid;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 9px;
  background: rgba(59, 130, 246, 0.18);
  color: #bfdbfe;
  font-size: 1.2rem;
}

.submission-page .evidence-lightbox-close {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  padding: 0;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.08);
  color: #dbe7f7;
  cursor: pointer;
}

.submission-page .evidence-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.16);
  color: var(--white);
}

.submission-page .evidence-lightbox-close:focus-visible {
  outline: 3px solid rgba(96, 165, 250, 0.5);
  outline-offset: 2px;
}

.submission-page .evidence-lightbox-viewport {
  position: relative;
  display: flex;
  min-height: 280px;
  overflow: auto;
  align-items: center;
  justify-content: center;
  flex: 1 1 auto;
  background:
    linear-gradient(45deg, rgba(255, 255, 255, 0.025) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.025) 75%),
    linear-gradient(45deg, rgba(255, 255, 255, 0.025) 25%, transparent 25%, transparent 75%, rgba(255, 255, 255, 0.025) 75%),
    #0b1220;
  background-position: 0 0, 12px 12px;
  background-size: 24px 24px;
}

.submission-page .evidence-lightbox-image {
  display: block;
  max-width: 100%;
  max-height: calc(94vh - 132px);
  object-fit: contain;
}

.submission-page .evidence-lightbox-pdf {
  width: min(900px, 92vw);
  height: calc(94vh - 132px);
  min-height: 520px;
  border: 0;
  background: var(--white);
}

.submission-page .evidence-lightbox-loading,
.submission-page .evidence-lightbox-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.7rem;
  padding: 2rem;
  color: #aab8cb;
  text-align: center;
  font-size: 0.78rem;
}

.submission-page .evidence-lightbox-fallback > .material-symbols-outlined {
  color: #7f91aa;
  font-size: 3rem;
}

.submission-page .evidence-lightbox-fallback strong {
  color: #e5edf8;
  font-size: 0.9rem;
}

.submission-page .evidence-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(255, 255, 255, 0.16);
  border-top-color: #60a5fa;
  border-radius: 50%;
  animation: evidence-spin 0.75s linear infinite;
}

@keyframes evidence-loading {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

@keyframes evidence-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .submission-page .evidence-lightbox {
    padding: 0.55rem;
  }

  .submission-page .evidence-lightbox-panel {
    width: 100%;
    max-height: calc(100vh - 1.1rem);
    border-radius: 13px;
  }

  .submission-page .evidence-lightbox-heading strong {
    max-width: 58vw;
  }

  .submission-page .evidence-lightbox-pdf {
    width: 100%;
    height: calc(100vh - 132px);
    min-height: 360px;
  }
}

@media (max-width: 480px) {
  .submission-page .file-item {
    grid-template-columns: 56px minmax(0, 1fr) auto;
    gap: 0.45rem;
  }

  .submission-page .evidence-preview-button {
    width: 56px;
    height: 46px;
  }

  .submission-page .evidence-lightbox-footer > span {
    display: none;
  }

  .submission-page .evidence-lightbox-footer {
    justify-content: flex-end;
  }
}

/* Motion nhẹ cho quy trình: chỉ chạy khi tải, đổi bước hoặc render trạng thái mới. */
.submission-page .stepper li {
  animation: workflow-step-fade 0.34s ease-out backwards;
}

.submission-page .stepper li:nth-child(1) { animation-delay: 0.02s; }
.submission-page .stepper li:nth-child(2) { animation-delay: 0.07s; }
.submission-page .stepper li:nth-child(3) { animation-delay: 0.12s; }
.submission-page .stepper li:nth-child(4) { animation-delay: 0.17s; }

.submission-page .step-marker {
  transition: background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.submission-page .stepper li.active::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(105deg, transparent 28%, rgba(255, 255, 255, 0.72) 48%, transparent 68%);
  content: '';
  pointer-events: none;
  transform: translateX(-125%);
  animation: workflow-step-shine 0.72s ease-out;
}

.submission-page .stepper li.active .step-marker {
  animation: workflow-marker-pop 0.38s cubic-bezier(0.2, 0.9, 0.3, 1.3);
}

.submission-page .stepper li.done .step-check {
  animation: workflow-check-pop 0.3s cubic-bezier(0.2, 0.9, 0.3, 1.35);
}

.submission-page .workflow-card.is-entering {
  animation: workflow-panel-enter 0.36s cubic-bezier(0.2, 0.75, 0.25, 1) both;
}

.submission-page .workflow-card.is-entering::before {
  transform-origin: left center;
  animation: workflow-line-sweep 0.55s 0.04s ease-out backwards;
}

.submission-page .workflow-card.is-entering .panel-icon {
  animation: workflow-icon-pop 0.42s 0.06s cubic-bezier(0.2, 0.9, 0.3, 1.25) backwards;
}

.submission-page .workflow-card.is-entering .panel-heading > div:not(.panel-heading-main),
.submission-page .workflow-card.is-entering .panel-heading-main > div {
  animation: workflow-item-rise 0.3s 0.1s ease-out backwards;
}

.submission-page #step-1.is-entering .auth-form-card {
  animation: workflow-item-rise 0.34s 0.1s ease-out backwards;
}

.submission-page #step-1.is-entering .trust-card {
  animation: workflow-item-rise 0.34s 0.16s ease-out backwards;
}

.submission-page #step-1.is-entering .trust-icon {
  animation: workflow-icon-pop 0.38s 0.24s cubic-bezier(0.2, 0.9, 0.3, 1.25) backwards;
}

.submission-page #step-1.is-entering .trust-card li {
  animation: workflow-item-rise 0.26s ease-out backwards;
}

.submission-page #step-1.is-entering .trust-card li:nth-child(1) { animation-delay: 0.24s; }
.submission-page #step-1.is-entering .trust-card li:nth-child(2) { animation-delay: 0.29s; }
.submission-page #step-1.is-entering .trust-card li:nth-child(3) { animation-delay: 0.34s; }

.submission-page #step-2.is-entering > .content-section,
.submission-page #step-3.is-entering .completion-card,
.submission-page #step-3.is-entering .form-section {
  animation: workflow-item-rise 0.32s ease-out backwards;
}

.submission-page #step-2.is-entering > .content-section:nth-of-type(2),
.submission-page #step-3.is-entering .form-section {
  animation-delay: 0.1s;
}

.submission-page .summary-item {
  transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
  animation: workflow-item-rise 0.28s ease-out backwards;
}

.submission-page .summary-item:hover {
  border-color: rgba(0, 102, 179, 0.2);
  box-shadow: 0 8px 18px rgba(0, 102, 179, 0.08);
  transform: translateY(-2px);
}

.submission-page .summary-item:nth-child(1) { animation-delay: 0.05s; }
.submission-page .summary-item:nth-child(2) { animation-delay: 0.08s; }
.submission-page .summary-item:nth-child(3) { animation-delay: 0.11s; }
.submission-page .summary-item:nth-child(4) { animation-delay: 0.14s; }
.submission-page .summary-item:nth-child(5) { animation-delay: 0.17s; }
.submission-page .summary-item:nth-child(n+6) { animation-delay: 0.2s; }

.submission-page #step-4.is-entering .tracking-hero {
  animation: workflow-item-rise 0.32s 0.07s ease-out backwards;
}

.submission-page .tracking-status-icon {
  position: relative;
  animation: workflow-status-pop 0.46s 0.1s cubic-bezier(0.2, 0.9, 0.3, 1.25) backwards;
}

.submission-page .tracking-hero.processing .tracking-status-icon::after {
  position: absolute;
  inset: -1px;
  border: 2px solid rgba(0, 102, 179, 0.48);
  border-radius: inherit;
  content: '';
  pointer-events: none;
  animation: workflow-status-ring 1.15s 0.38s ease-out backwards;
}

.submission-page .tracking-status-copy {
  animation: workflow-item-rise 0.28s 0.16s ease-out backwards;
}

.submission-page .next-step-card > * {
  animation: workflow-item-rise 0.28s ease-out backwards;
}

.submission-page .next-step-card > .material-symbols-outlined { animation-delay: 0.16s; }
.submission-page .next-step-card > div { animation-delay: 0.2s; }

.submission-page .timeline-item {
  animation: workflow-timeline-enter 0.28s ease-out backwards;
}

.submission-page .timeline-item:nth-child(1) { animation-delay: 0.16s; }
.submission-page .timeline-item:nth-child(2) { animation-delay: 0.21s; }
.submission-page .timeline-item:nth-child(3) { animation-delay: 0.26s; }
.submission-page .timeline-item:nth-child(4) { animation-delay: 0.31s; }
.submission-page .timeline-item:nth-child(5) { animation-delay: 0.36s; }
.submission-page .timeline-item:nth-child(n+6) { animation-delay: 0.4s; }

.submission-page .timeline-item .timeline-marker {
  animation: workflow-marker-pop 0.34s 0.16s cubic-bezier(0.2, 0.9, 0.3, 1.2) backwards;
}

.submission-page .tracking-actions .btn {
  animation: workflow-item-rise 0.26s ease-out backwards;
}

.submission-page .tracking-actions .btn:nth-child(1) { animation-delay: 0.22s; }
.submission-page .tracking-actions .btn:nth-child(2) { animation-delay: 0.27s; }

@keyframes workflow-step-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes workflow-step-shine {
  from { transform: translateX(-125%); }
  to { transform: translateX(125%); }
}

@keyframes workflow-marker-pop {
  0% { opacity: 0.55; transform: scale(0.78) rotate(-5deg); }
  70% { opacity: 1; transform: scale(1.08) rotate(1deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

@keyframes workflow-check-pop {
  0% { opacity: 0; transform: scale(0.58) rotate(-12deg); }
  75% { opacity: 1; transform: scale(1.13) rotate(2deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

@keyframes workflow-panel-enter {
  from { opacity: 0; transform: translateY(10px) scale(0.995); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes workflow-line-sweep {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

@keyframes workflow-icon-pop {
  0% { opacity: 0; transform: scale(0.82) rotate(-4deg); }
  72% { opacity: 1; transform: scale(1.06) rotate(1deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

@keyframes workflow-item-rise {
  from { opacity: 0; transform: translateY(7px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes workflow-status-pop {
  0% { opacity: 0; transform: scale(0.76) rotate(-8deg); }
  68% { opacity: 1; transform: scale(1.08) rotate(2deg); }
  100% { opacity: 1; transform: scale(1) rotate(0); }
}

@keyframes workflow-status-ring {
  0% { opacity: 0.65; transform: scale(0.9); }
  100% { opacity: 0; transform: scale(1.55); }
}

@keyframes workflow-timeline-enter {
  from { opacity: 0; transform: translateX(-7px); }
  to { opacity: 1; transform: translateX(0); }
}

/* Student academic palette: navy, warm ivory and restrained brass accents. */
body.submission-page {
  --doan-blue: #244b6b;
  --doan-blue-dark: #17324a;
  --doan-blue-light: #55738f;
  --doan-blue-lighter: #e8eff5;
  --student-accent: #a7782b;
  --student-accent-dark: #7b551d;
  --student-accent-soft: #f5ebd8;
  --gray-50: #f6f4ee;
  --gray-100: #efede6;
  --gray-200: #d8dee5;
  --gray-300: #c5cdd5;
  --gray-400: #929da8;
  --gray-500: #66727e;
  --gray-600: #4e5c69;
  --gray-700: #354453;
  --gray-800: #263442;
  --gray-900: #172533;
  --success: #2f7d62;
  --success-dark: #245c4a;
  --warning: #b7791f;
  --warning-dark: #7a4a12;
  --danger: #c2413b;
  --danger-dark: #8f2e2a;
  --info: #244b6b;
  --shadow-sm: 0 2px 5px rgba(23, 50, 74, 0.055);
  --shadow-md: 0 9px 24px rgba(23, 50, 74, 0.09);
  --shadow-lg: 0 20px 48px rgba(23, 50, 74, 0.105);
  background: var(--gray-50);
  color: var(--gray-800);
}

.submission-page .site-header {
  background:
    radial-gradient(circle at 88% -80%, rgba(255, 255, 255, 0.16), transparent 36%),
    linear-gradient(118deg, #17324a 0%, #244b6b 70%, #365f7b 100%);
  border-bottom: 3px solid rgba(167, 120, 43, 0.72);
  box-shadow: 0 10px 28px rgba(23, 50, 74, 0.2);
}

.submission-page .header-link.active {
  color: var(--doan-blue-dark);
  box-shadow: 0 6px 16px rgba(11, 31, 48, 0.18);
}

.submission-page .intro-section {
  border-bottom-color: #d9d7cf;
  background:
    radial-gradient(circle at 92% 6%, rgba(167, 120, 43, 0.13), transparent 26%),
    radial-gradient(circle at 7% 14%, rgba(36, 75, 107, 0.08), transparent 24%),
    linear-gradient(180deg, #faf7ef 0%, var(--gray-50) 100%);
}

.submission-page .intro-main,
.submission-page .intro-side {
  border-color: #d9dee2;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 10px 26px rgba(23, 50, 74, 0.075);
}

.submission-page .intro-main {
  box-shadow: inset 0 3px 0 var(--doan-blue), 0 10px 26px rgba(23, 50, 74, 0.075);
}

.submission-page .intro-side {
  box-shadow: inset 0 3px 0 var(--student-accent), 0 10px 26px rgba(23, 50, 74, 0.075);
}

.submission-page .section-kicker {
  color: var(--student-accent-dark);
  background: var(--student-accent-soft);
  border: 1px solid rgba(167, 120, 43, 0.2);
}

.submission-page .section-kicker .material-symbols-outlined {
  color: var(--student-accent);
}

.submission-page .intro-main h1,
.submission-page .section-heading h2 {
  color: var(--doan-blue-dark);
}

.submission-page .hero-points > span {
  border-color: rgba(36, 75, 107, 0.16);
  background: #fbfaf6;
}

.submission-page .hero-points .material-symbols-outlined,
.submission-page .preparation-list .material-symbols-outlined {
  color: var(--doan-blue);
}

.submission-page .intro-side-icon,
.submission-page .panel-icon {
  background: linear-gradient(135deg, var(--doan-blue-dark), var(--doan-blue-light));
  box-shadow: 0 10px 22px rgba(36, 75, 107, 0.22);
}

.submission-page .file-note {
  color: var(--doan-blue-dark);
  background: #eef3f7;
  border: 1px solid #d5e0e8;
}

.submission-page .workflow-section {
  background:
    radial-gradient(circle at 92% 8%, rgba(167, 120, 43, 0.055), transparent 26%),
    radial-gradient(circle at 4% 42%, rgba(36, 75, 107, 0.045), transparent 24%),
    var(--gray-50);
}

.submission-page .stepper li {
  border-color: var(--gray-200);
  background: #fff;
}

.submission-page .stepper li.active {
  border-color: rgba(36, 75, 107, 0.52);
  background: linear-gradient(135deg, #ffffff, #f1f4f7);
  box-shadow: 0 10px 24px rgba(36, 75, 107, 0.13);
}

.submission-page .stepper li.active .step-marker {
  background: linear-gradient(135deg, var(--doan-blue-dark), var(--doan-blue-light));
  box-shadow: 0 7px 15px rgba(36, 75, 107, 0.26);
}

.submission-page .stepper li.step-clickable:hover {
  border-color: rgba(36, 75, 107, 0.46);
  box-shadow: 0 10px 24px rgba(36, 75, 107, 0.11);
}

.submission-page .stepper li.step-clickable:focus-visible {
  outline-color: rgba(36, 75, 107, 0.28);
}

.submission-page .workflow-card {
  border-color: rgba(216, 222, 229, 0.98);
  background:
    radial-gradient(circle at top right, rgba(167, 120, 43, 0.055), transparent 28%),
    #ffffff;
  box-shadow: var(--shadow-lg);
}

.submission-page .workflow-card::before {
  background: linear-gradient(90deg, var(--doan-blue-dark) 0%, var(--doan-blue) 72%, var(--student-accent) 100%);
}

.submission-page .panel-eyebrow,
.submission-page .subsection-kicker {
  color: var(--student-accent-dark);
}

.submission-page .content-section,
.submission-page .form-section {
  border-color: var(--gray-200);
  background: rgba(250, 249, 245, 0.82);
}

.submission-page .auth-form-card,
.submission-page .trust-card {
  border-color: var(--gray-200);
}

.submission-page .auth-form-card {
  background: #ffffff;
}

.submission-page .trust-card {
  background:
    radial-gradient(circle at top right, rgba(167, 120, 43, 0.13), transparent 38%),
    linear-gradient(145deg, #f8f6ef, #edf2f6);
}

.submission-page .trust-icon {
  color: var(--doan-blue);
  border: 1px solid #dde4e9;
  box-shadow: 0 5px 14px rgba(23, 50, 74, 0.08);
}

.submission-page .field label .material-symbols-outlined,
.submission-page .summary-item .label .material-symbols-outlined,
.submission-page .campaign-meta .material-symbols-outlined {
  color: var(--doan-blue);
}

.submission-page .field input,
.submission-page .field select,
.submission-page .field textarea {
  border-color: var(--gray-200);
  background: #ffffff;
}

.submission-page .field input:focus,
.submission-page .field select:focus,
.submission-page .field textarea:focus {
  border-color: var(--doan-blue);
  box-shadow: 0 0 0 4px rgba(36, 75, 107, 0.14);
}

.submission-page .btn:focus-visible,
.submission-page .evidence-preview-button:focus-visible {
  outline-color: rgba(36, 75, 107, 0.28);
}

.submission-page .btn-primary {
  border-color: var(--doan-blue);
  background: linear-gradient(135deg, var(--doan-blue-dark), var(--doan-blue-light));
  box-shadow: 0 8px 20px rgba(36, 75, 107, 0.24);
}

.submission-page .btn-primary:hover:not(:disabled) {
  border-color: #102b42;
  background: linear-gradient(135deg, #102b42, var(--doan-blue));
  box-shadow: 0 10px 24px rgba(36, 75, 107, 0.29);
}

.submission-page .btn-secondary:hover:not(:disabled),
.submission-page .btn-ghost:hover:not(:disabled) {
  border-color: var(--doan-blue-light);
  background: var(--doan-blue-lighter);
  color: var(--doan-blue-dark);
}

.submission-page .alert-info,
.submission-page .message-info {
  border-color: #c8d8e5;
  background: #eef3f7;
  color: var(--doan-blue-dark);
}

.submission-page .summary-item:hover {
  border-color: rgba(36, 75, 107, 0.23);
  box-shadow: 0 8px 18px rgba(36, 75, 107, 0.09);
}

.submission-page .campaign-item.accepting {
  border-color: rgba(36, 75, 107, 0.34);
  background: linear-gradient(135deg, #ffffff, #f3f6f8);
}

.submission-page .campaign-item.accepting::before {
  background: linear-gradient(180deg, var(--doan-blue-dark), var(--student-accent));
}

.submission-page .status-draft,
.submission-page .status-processing {
  color: var(--doan-blue-dark);
  background: var(--doan-blue-lighter);
}

.submission-page .completion-card {
  border-color: rgba(36, 75, 107, 0.18);
  background: linear-gradient(135deg, #f3f6f8, #fffdfa);
}

.submission-page .tracking-hero.processing {
  border-color: rgba(36, 75, 107, 0.24);
  background: linear-gradient(135deg, #eef3f7, #ffffff);
}

.submission-page .tracking-hero.processing .tracking-status-icon {
  color: var(--doan-blue);
  background: var(--doan-blue-lighter);
}

.submission-page .tracking-hero.processing .tracking-status-icon::after {
  border-color: rgba(36, 75, 107, 0.5);
}

.submission-page .evidence-preview-button {
  color: var(--doan-blue);
  background: var(--doan-blue-lighter);
}

/* Apple-inspired refinement: quiet surfaces, soft depth and a single blue accent. */
body.submission-page {
  --doan-blue: #0071e3;
  --doan-blue-dark: #0058b0;
  --doan-blue-light: #2997ff;
  --doan-blue-lighter: #eaf3ff;
  --student-accent: #0071e3;
  --student-accent-dark: #0058b0;
  --student-accent-soft: #eaf3ff;
  --gray-50: #f5f5f7;
  --gray-100: #f2f2f2;
  --gray-200: #e5e5e7;
  --gray-300: #d2d2d7;
  --gray-400: #a1a1a6;
  --gray-500: #86868b;
  --gray-600: #6e6e73;
  --gray-700: #424245;
  --gray-800: #1d1d1f;
  --gray-900: #101010;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.035);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.065);
  --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.08);
  background: #f5f5f7;
  color: #1d1d1f;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Inter", "Segoe UI", sans-serif;
  letter-spacing: -0.005em;
}

.submission-page .site-header {
  background: rgba(255, 255, 255, 0.82);
  color: #1d1d1f;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: none;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.submission-page .brand {
  color: #1d1d1f;
}

.submission-page .brand-text small {
  color: #6e6e73;
}

.submission-page .logo-divider {
  background: linear-gradient(to bottom, transparent, #d2d2d7, transparent);
}

.submission-page .header-link {
  color: #424245;
  border-color: transparent;
  border-radius: 999px;
}

.submission-page .header-link:hover,
.submission-page .header-link:focus-visible {
  color: #1d1d1f;
  background: rgba(0, 0, 0, 0.045);
  border-color: transparent;
}

.submission-page .header-link.active {
  color: #0071e3;
  background: #f2f2f2;
  border-color: transparent;
  box-shadow: none;
}

.submission-page .intro-section,
.submission-page .workflow-section {
  background: #f5f5f7;
}

.submission-page .intro-section {
  padding-top: 2.6rem;
  padding-bottom: 2.6rem;
  border-bottom-color: #e5e5e7;
}

.submission-page .intro-main,
.submission-page .intro-side {
  border: 1px solid rgba(0, 0, 0, 0.075);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.055);
}

.submission-page .section-kicker {
  color: #0058b0;
  background: #eaf3ff;
  border: 0;
  border-radius: 999px;
}

.submission-page .section-kicker .material-symbols-outlined {
  color: #0071e3;
}

.submission-page .intro-main h1 {
  color: #1d1d1f;
  font-size: clamp(1.7rem, 3.2vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.035em;
}

.submission-page .intro-main > p,
.submission-page .section-heading p {
  color: #6e6e73;
}

.submission-page .hero-points > span {
  color: #424245;
  background: #ffffff;
  border-color: #d2d2d7;
  border-radius: 12px;
}

.submission-page .hero-points .material-symbols-outlined,
.submission-page .preparation-list .material-symbols-outlined {
  color: #0071e3;
}

.submission-page .intro-side-icon,
.submission-page .panel-icon {
  color: #ffffff;
  background: #0071e3;
  box-shadow: 0 8px 18px rgba(0, 113, 227, 0.2);
}

.submission-page .file-note {
  color: #424245;
  background: #f5f5f7;
  border-color: #e5e5e7;
}

.submission-page .section-heading h2 {
  color: #1d1d1f;
  letter-spacing: -0.025em;
}

.submission-page .stepper li {
  border-color: #e5e5e7;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.035);
}

.submission-page .stepper li.active {
  border-color: rgba(0, 113, 227, 0.5);
  background: #ffffff;
  box-shadow: 0 8px 24px rgba(0, 113, 227, 0.12);
}

.submission-page .stepper li.active .step-marker {
  color: #ffffff;
  background: #0071e3;
  box-shadow: 0 6px 14px rgba(0, 113, 227, 0.22);
}

.submission-page .stepper li.active .step-copy strong {
  color: #0058b0;
}

.submission-page .stepper li.step-clickable:hover {
  border-color: rgba(0, 113, 227, 0.42);
  box-shadow: 0 8px 22px rgba(0, 113, 227, 0.1);
}

.submission-page .stepper li.step-clickable:focus-visible {
  outline-color: rgba(0, 113, 227, 0.28);
}

.submission-page .workflow-card {
  border: 1px solid rgba(0, 0, 0, 0.075);
  border-radius: 24px;
  background: #ffffff;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.075);
}

.submission-page .workflow-card::before {
  height: 3px;
  background: #0071e3;
}

.submission-page .panel-eyebrow,
.submission-page .subsection-kicker {
  color: #0071e3;
}

.submission-page .panel-heading {
  border-bottom-color: #e5e5e7;
}

.submission-page .content-section,
.submission-page .form-section {
  border-color: #e5e5e7;
  border-radius: 18px;
  background: #f5f5f7;
}

.submission-page .auth-form-card,
.submission-page .trust-card {
  border-color: #e5e5e7;
  border-radius: 18px;
}

.submission-page .auth-form-card {
  background: #ffffff;
  box-shadow: none;
}

.submission-page .trust-card {
  background: #f5f5f7;
}

.submission-page .trust-icon {
  color: #0071e3;
  background: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.06);
}

.submission-page .trust-card h3 {
  color: #1d1d1f;
}

.submission-page .field label .material-symbols-outlined,
.submission-page .summary-item .label .material-symbols-outlined,
.submission-page .campaign-meta .material-symbols-outlined {
  color: #0071e3;
}

.submission-page .field input,
.submission-page .field select,
.submission-page .field textarea {
  color: #1d1d1f;
  background: #ffffff;
  border-color: #d2d2d7;
  border-radius: 12px;
}

.submission-page .field input:focus,
.submission-page .field select:focus,
.submission-page .field textarea:focus {
  border-color: #0071e3;
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.12);
}

.submission-page .btn {
  border-radius: 12px;
  font-weight: 600;
}

.submission-page .btn:focus-visible,
.submission-page .evidence-preview-button:focus-visible {
  outline-color: rgba(0, 113, 227, 0.28);
}

.submission-page .btn-primary {
  color: #ffffff;
  background: #0071e3;
  border-color: #0071e3;
  box-shadow: none;
}

.submission-page .btn-primary:hover:not(:disabled) {
  color: #ffffff;
  background: #0077ed;
  border-color: #0077ed;
  box-shadow: 0 6px 16px rgba(0, 113, 227, 0.2);
}

.submission-page .btn-secondary,
.submission-page .btn-ghost {
  color: #424245;
  background: #ffffff;
  border-color: #d2d2d7;
}

.submission-page .btn-secondary:hover:not(:disabled),
.submission-page .btn-ghost:hover:not(:disabled) {
  color: #0058b0;
  background: #eaf3ff;
  border-color: #b9d8fa;
}

.submission-page .alert-info,
.submission-page .message-info {
  color: #0058b0;
  background: #eaf3ff;
  border-color: #c7e1fb;
}

.submission-page .summary-item,
.submission-page .campaign-item,
.submission-page .empty-state {
  border-color: #e5e5e7;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: none;
}

.submission-page .summary-item:hover {
  border-color: #c7e1fb;
  box-shadow: 0 8px 20px rgba(0, 113, 227, 0.075);
}

.submission-page .campaign-item.accepting {
  border-color: rgba(0, 113, 227, 0.32);
  background: #ffffff;
}

.submission-page .campaign-item.accepting::before {
  background: #0071e3;
}

.submission-page .status-draft,
.submission-page .status-processing {
  color: #0058b0;
  background: #eaf3ff;
}

.submission-page .completion-card {
  border-color: #d2d2d7;
  background: #f5f5f7;
}

.submission-page .tracking-hero.processing {
  border-color: #c7e1fb;
  background: #f5f9ff;
}

.submission-page .tracking-hero.processing .tracking-status-icon {
  color: #0071e3;
  background: #eaf3ff;
}

.submission-page .tracking-hero.processing .tracking-status-icon::after {
  border-color: rgba(0, 113, 227, 0.45);
}

.submission-page .evidence-preview-button {
  color: #0071e3;
  background: #eaf3ff;
}

/* Lighter cool-neutral page layers: preserve white cards without a flat gray canvas. */
body.submission-page {
  --gray-50: #f7f8fa;
  --gray-100: #f1f3f5;
  --gray-200: #e4e7ec;
  background: #f7f8fa;
}

.submission-page .site-page {
  background: #f7f8fa;
}

.submission-page .intro-section {
  background: #fbfcfe;
  border-bottom-color: #e4e7ec;
}

.submission-page .workflow-section {
  background: #f4f6f8;
}

.submission-page .intro-main,
.submission-page .intro-side,
.submission-page .workflow-card,
.submission-page .auth-form-card,
.submission-page .summary-item,
.submission-page .campaign-item,
.submission-page .empty-state {
  background: #ffffff;
  border-color: #e4e7ec;
}

.submission-page .content-section,
.submission-page .form-section,
.submission-page .trust-card,
.submission-page .completion-card {
  background: #f8f9fb;
  border-color: #e4e7ec;
}

/* White student header with blue identity and understated navigation states. */
.submission-page .site-header {
  color: #0058b0;
  background: rgba(255, 255, 255, 0.94);
  border-bottom-color: #dbe7f3;
  box-shadow: 0 3px 14px rgba(0, 71, 145, 0.08);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

.submission-page .brand,
.submission-page .brand-text strong {
  color: #0058b0;
}

.submission-page .brand-text small {
  color: #68829a;
}

.submission-page .logo-divider {
  background: linear-gradient(to bottom, transparent, #c9d9e8, transparent);
}

.submission-page .header-link {
  color: #0058b0;
  border-color: transparent;
}

.submission-page .header-link:hover,
.submission-page .header-link:focus-visible {
  color: #0071e3;
  background: #f0f6fc;
  border-color: transparent;
}

.submission-page .header-link.active {
  color: #0058b0;
  background: #eaf3ff;
  border-color: #c7e1fb;
  box-shadow: none;
}

/* Blue key headings to match the white student header identity. */
.submission-page .intro-main h1,
.submission-page .section-heading h2 {
  color: #0058b0;
}

/* Compact sign-in guide: uses the equal-height auth card space without adding another action. */
.submission-page .auth-form-card {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.submission-page .auth-guide {
  position: relative;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 0.8rem;
  overflow: hidden;
  border: 1px solid rgba(0, 113, 227, 0.12);
  border-radius: 14px;
  background:
    radial-gradient(circle at top right, rgba(0, 113, 227, 0.1), transparent 42%),
    linear-gradient(145deg, #fbfdff, #f5f9fd);
}

.submission-page .auth-guide-heading {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 0;
}

.submission-page .auth-guide-icon {
  display: grid;
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(0, 113, 227, 0.12);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--doan-blue);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  font-size: 1.08rem;
}

.submission-page .auth-guide-heading > div,
.submission-page .auth-guide-steps li > span:last-child {
  min-width: 0;
}

.submission-page .auth-guide-heading h3 {
  margin: 0;
  color: var(--gray-800);
  font-size: 0.82rem;
  line-height: 1.35;
}

.submission-page .auth-guide-heading p {
  margin: 0.12rem 0 0;
  color: var(--gray-500);
  font-size: 0.69rem;
  line-height: 1.45;
}

.submission-page .auth-guide-steps {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 0.42rem;
  margin: 0.65rem 0 0;
  padding: 0;
  list-style: none;
}

.submission-page .auth-guide-steps li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  align-items: center;
  gap: 0.55rem;
  min-width: 0;
  padding: 0.38rem 0.48rem;
  border: 1px solid rgba(0, 113, 227, 0.09);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--gray-600);
  font-size: 0.7rem;
  line-height: 1.4;
}

.submission-page .auth-guide-steps strong {
  color: var(--gray-800);
  font-weight: 650;
}

.submission-page .auth-guide-number {
  display: grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--doan-blue-dark), var(--doan-blue));
  color: #ffffff;
  box-shadow: 0 4px 10px rgba(0, 113, 227, 0.18);
  font-size: 0.65rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.submission-page #step-1.is-entering .auth-guide-steps li {
  animation: workflow-item-rise 0.26s ease-out backwards;
}

.submission-page #step-1.is-entering .auth-guide-steps li:nth-child(1) { animation-delay: 0.2s; }
.submission-page #step-1.is-entering .auth-guide-steps li:nth-child(2) { animation-delay: 0.25s; }
.submission-page #step-1.is-entering .auth-guide-steps li:nth-child(3) { animation-delay: 0.3s; }

@media (min-width: 601px) and (max-width: 1024px) {
  .submission-page .auth-guide-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .submission-page .auth-guide-steps li {
    align-items: start;
  }
}

@media (max-width: 600px) {
  .submission-page .auth-form-card {
    gap: 0.75rem;
    padding: 1rem;
  }

  .submission-page .auth-guide {
    padding: 0.75rem;
  }

  .submission-page .auth-guide-heading {
    align-items: flex-start;
  }

  .submission-page .auth-guide-steps {
    grid-template-columns: 1fr;
  }
}