/*
 * Interface sans build pour le portail de devoirs.
 *
 * Hooks principaux attendus par les vues PHP :
 * - Structure : .site-header, .container, .page-header, .card, .stack, .grid
 * - Formulaires : .form-field, .form-grid, .form-actions, .field-hint,
 *   .field-error, .file-picker, [data-file-info]
 * - Actions : .button (ou .btn), .button--secondary, .button--danger
 * - Administration : .admin-nav, .stats-grid, .table-wrap, .data-table
 * - Etats : .alert--success|warning|error|info et
 *   .status-badge.status--submitted|seen|checked|graded|returned|rejected
 * - Apercu : .preview-panel, .preview-frame, .preview-unavailable
 */

:root {
  color-scheme: light;
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-surface-soft: #eef4ff;
  --color-text: #172033;
  --color-muted: #536178;
  --color-border: #cbd5e1;
  --color-border-strong: #94a3b8;
  --color-primary: #174ea6;
  --color-primary-hover: #123d82;
  --color-primary-soft: #e7f0ff;
  --color-success: #146c43;
  --color-success-soft: #e6f6ed;
  --color-warning: #8a4b08;
  --color-warning-soft: #fff4d6;
  --color-danger: #a61b1b;
  --color-danger-hover: #821515;
  --color-danger-soft: #fdeaea;
  --color-info: #075985;
  --color-info-soft: #e8f5fc;
  --shadow-sm: 0 1px 2px rgb(15 23 42 / 8%);
  --shadow-md: 0 12px 30px rgb(15 23 42 / 10%);
  --radius-sm: 0.5rem;
  --radius-md: 0.8rem;
  --radius-lg: 1.1rem;
  --content-width: 72rem;
  --focus-ring: 0 0 0 4px rgb(23 78 166 / 24%);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 20rem;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.6;
}

body.admin-page {
  background: #f1f5f9;
}

img,
svg {
  max-width: 100%;
}

a {
  color: var(--color-primary);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-primary-hover);
}

button,
input,
select,
textarea {
  font: inherit;
}

button,
select,
input[type="file"] {
  cursor: pointer;
}

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  transform: translateY(-180%);
  border-radius: var(--radius-sm);
  background: var(--color-text);
  color: #fff;
  font-weight: 800;
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
}

.container {
  width: min(100% - 2rem, var(--content-width));
  margin-inline: auto;
}

.container--narrow {
  max-width: 46rem;
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.site-header__inner {
  display: flex;
  min-height: 4.75rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text);
  font-size: 1.14rem;
  font-weight: 850;
  line-height: 1.25;
  text-decoration: none;
}

.brand__mark {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 0.75rem;
  background: var(--color-primary);
  color: #fff;
  font-weight: 900;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.page-main {
  padding-block: clamp(1.5rem, 4vw, 3rem) 4rem;
}

.page-header {
  margin-bottom: 1.5rem;
}

.page-header__row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

h1,
h2,
h3 {
  margin-top: 0;
  color: var(--color-text);
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  margin-bottom: 0.65rem;
  font-size: clamp(1.75rem, 5vw, 2.65rem);
}

h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

h3 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

p {
  margin-block: 0 1rem;
}

.lead {
  max-width: 48rem;
  color: var(--color-muted);
  font-size: 1.1rem;
}

.muted,
.text-muted {
  color: var(--color-muted);
}

.small,
small {
  font-size: 0.9rem;
}

.stack > * {
  margin-block: 0;
}

.stack > * + * {
  margin-top: 1rem;
}

.stack--large > * + * {
  margin-top: 1.5rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

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

.card,
.panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.card {
  padding: clamp(1.15rem, 3vw, 2rem);
}

.card--raised {
  box-shadow: var(--shadow-md);
}

.card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.card__header > :last-child,
.card__title {
  margin-bottom: 0;
}

.selection-summary {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.9rem 1rem;
  border: 1px solid #b7cdf1;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: #123765;
  font-weight: 750;
}

.selection-summary::before {
  content: "✓";
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  line-height: 1;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}

.form-field,
.field {
  min-width: 0;
}

.form-field--full,
.field--full {
  grid-column: 1 / -1;
}

label,
.field-label {
  display: inline-block;
  margin-bottom: 0.4rem;
  color: var(--color-text);
  font-weight: 780;
}

.required-mark {
  color: var(--color-danger);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="search"],
input[type="date"],
select,
textarea {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.72rem 0.85rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-text);
  box-shadow: inset 0 1px 1px rgb(15 23 42 / 3%);
}

textarea {
  min-height: 8rem;
  resize: vertical;
}

select {
  padding-right: 2.5rem;
}

input:hover,
select:hover,
textarea:hover {
  border-color: var(--color-border-strong);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: var(--focus-ring);
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"],
.is-invalid {
  border-color: var(--color-danger);
}

input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  background: #e8edf3;
  color: #667085;
}

.field-hint,
.form-help {
  margin-top: 0.38rem;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.field-error,
.form-error {
  margin-top: 0.38rem;
  color: var(--color-danger);
  font-size: 0.94rem;
  font-weight: 750;
}

.file-picker {
  padding: 1rem;
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  background: #f8fafc;
}

.file-picker:focus-within,
.file-picker[data-has-file="true"] {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.file-picker input[type="file"] {
  width: 100%;
  min-height: 3rem;
  color: var(--color-text);
}

.form-field > input[type="file"],
.field > input[type="file"] {
  width: 100%;
  min-height: 4.5rem;
  padding: 0.7rem;
  border: 2px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  background: #f8fafc;
  color: var(--color-text);
}

.form-field > input[type="file"]:focus,
.field > input[type="file"]:focus,
.form-field[data-has-file="true"] > input[type="file"],
.field[data-has-file="true"] > input[type="file"] {
  border-color: var(--color-primary);
  outline: none;
  background: var(--color-primary-soft);
  box-shadow: var(--focus-ring);
}

input[type="file"]::file-selector-button {
  min-height: 2.75rem;
  margin-right: 0.8rem;
  padding: 0.6rem 0.9rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  font-weight: 800;
}

input[type="file"]::file-selector-button:hover {
  background: var(--color-primary-hover);
}

.file-info,
[data-file-info] {
  margin: 0.65rem 0 0;
  color: var(--color-muted);
  font-size: 0.94rem;
  overflow-wrap: anywhere;
}

.file-picker[data-has-file="true"] .file-info,
.file-picker[data-has-file="true"] [data-file-info],
.form-field[data-has-file="true"] [data-file-info],
.field[data-has-file="true"] [data-file-info] {
  color: #123765;
  font-weight: 750;
}

.form-actions,
.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.button,
.btn {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.68rem 1.05rem;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: #fff;
  font-weight: 820;
  line-height: 1.25;
  text-align: center;
  text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease,
    transform 120ms ease;
}

.button:hover,
.btn:hover {
  background: var(--color-primary-hover);
  color: #fff;
}

.button:active,
.btn:active {
  transform: translateY(1px);
}

.button:focus-visible,
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.button--secondary,
.btn--secondary {
  border-color: var(--color-primary);
  background: #fff;
  color: var(--color-primary);
}

.button--secondary:hover,
.btn--secondary:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
}

.button--danger,
.btn--danger {
  background: var(--color-danger);
}

.button--danger:hover,
.btn--danger:hover {
  background: var(--color-danger-hover);
}

.button--ghost,
.btn--ghost {
  border-color: var(--color-border);
  background: transparent;
  color: var(--color-text);
}

.button--ghost:hover,
.btn--ghost:hover {
  background: #e8edf3;
  color: var(--color-text);
}

.button--small,
.btn--small {
  min-height: 2.55rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.92rem;
}

.button--wide,
.btn--wide {
  width: 100%;
}

.alert {
  padding: 1rem 1.1rem;
  border: 1px solid;
  border-left-width: 0.35rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.alert > :last-child {
  margin-bottom: 0;
}

.alert--success {
  border-color: #6fc494;
  background: var(--color-success-soft);
  color: #0e4f31;
}

.alert--warning {
  border-color: #d4a843;
  background: var(--color-warning-soft);
  color: #6f3b05;
}

.alert--error,
.alert--danger {
  border-color: #da7474;
  background: var(--color-danger-soft);
  color: #7f1515;
}

.alert--info {
  border-color: #60a9cf;
  background: var(--color-info-soft);
  color: #06496c;
}

.admin-nav {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.admin-nav__inner,
.admin-nav ul {
  display: flex;
  min-height: 3.7rem;
  align-items: stretch;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  list-style: none;
}

.admin-nav a {
  display: flex;
  min-height: 3.7rem;
  align-items: center;
  padding: 0.65rem 0.9rem;
  border-bottom: 4px solid transparent;
  color: var(--color-text);
  font-weight: 750;
  text-decoration: none;
  white-space: nowrap;
}

.admin-nav a:hover {
  background: var(--color-surface-soft);
}

.admin-nav a[aria-current="page"],
.admin-nav .is-active a,
.admin-nav a.is-active {
  border-bottom-color: var(--color-primary);
  color: var(--color-primary);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  padding: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.stat-card__label {
  display: block;
  color: var(--color-muted);
  font-size: 0.92rem;
  font-weight: 700;
}

.stat-card__value {
  display: block;
  margin-top: 0.2rem;
  color: var(--color-text);
  font-size: clamp(1.55rem, 4vw, 2.15rem);
  font-weight: 900;
  line-height: 1.2;
}

.filters {
  display: grid;
  grid-template-columns: repeat(4, minmax(9rem, 1fr));
  align-items: end;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

.data-table,
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.97rem;
}

.data-table {
  min-width: 48rem;
}

th,
td {
  padding: 0.85rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: middle;
}

th {
  background: #eef2f7;
  color: #344054;
  font-size: 0.86rem;
  font-weight: 850;
  letter-spacing: 0.015em;
  white-space: nowrap;
}

tbody tr:hover {
  background: #f7faff;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.table-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.status-badge,
.badge {
  display: inline-flex;
  min-height: 1.85rem;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #eef2f7;
  color: #344054;
  font-size: 0.82rem;
  font-weight: 850;
  line-height: 1.2;
  white-space: nowrap;
}

.status--submitted,
.status--depose,
.status--pending {
  border-color: #9cbbe9;
  background: var(--color-primary-soft);
  color: #123d72;
}

.status--seen,
.status--checked,
.status--vu {
  border-color: #d7ad4b;
  background: var(--color-warning-soft);
  color: #6f3b05;
}

.status--graded,
.status--returned,
.status--note,
.status--corrige {
  border-color: #7ac19a;
  background: var(--color-success-soft);
  color: #0e5333;
}

.status--rejected,
.status--refuse {
  border-color: #db8585;
  background: var(--color-danger-soft);
  color: #7f1515;
}

.empty-state {
  padding: clamp(2rem, 6vw, 4rem) 1rem;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  color: var(--color-muted);
  text-align: center;
}

.empty-state h2,
.empty-state h3 {
  margin-bottom: 0.35rem;
}

.preview-panel {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #e8edf3;
}

.preview-panel__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.preview-frame,
.preview-panel iframe,
.preview-panel object,
.preview-panel embed {
  display: block;
  width: 100%;
  min-height: min(72vh, 52rem);
  border: 0;
  background: #fff;
}

.preview-panel img.preview-frame {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 75vh;
  min-height: 0;
  margin: 1rem auto;
  object-fit: contain;
}

.preview-unavailable {
  display: grid;
  min-height: 15rem;
  place-items: center;
  padding: 2rem;
  color: var(--color-muted);
  text-align: center;
}

.detail-list {
  display: grid;
  grid-template-columns: minmax(8rem, 12rem) 1fr;
  gap: 0.55rem 1rem;
  margin: 0;
}

.detail-list dt {
  color: var(--color-muted);
  font-weight: 750;
}

.detail-list dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.login-card {
  width: min(100%, 30rem);
  margin: clamp(1rem, 8vh, 5rem) auto 0;
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 1.25rem;
}

.pagination a,
.pagination span {
  display: grid;
  min-width: 2.75rem;
  min-height: 2.75rem;
  place-items: center;
  padding: 0.45rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-weight: 750;
  text-decoration: none;
}

.pagination [aria-current="page"] {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.site-footer {
  padding-block: 1.5rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.9rem;
  text-align: center;
}

/* Aliases et composants utilises par les vues PHP du projet. */

.header-inner {
  display: flex;
  min-height: 5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.brand-mark {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 0.75rem;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.15rem;
  font-weight: 900;
}

.brand > span:last-child {
  display: grid;
}

.brand small {
  color: var(--color-muted);
  font-size: 0.78rem;
  font-weight: 650;
}

.main-content {
  min-height: calc(100vh - 10rem);
  padding-block: clamp(1.5rem, 4vw, 3rem) 4rem;
}

.hero,
.page-heading {
  margin-bottom: 1.5rem;
}

.hero {
  max-width: 48rem;
  margin-inline: auto;
  text-align: center;
}

.hero-compact {
  margin-bottom: 1.25rem;
}

.hero > :last-child,
.page-heading > :last-child,
.page-heading > div > :last-child {
  margin-bottom: 0;
  color: var(--color-muted);
}

.eyebrow {
  margin-bottom: 0.35rem;
  color: var(--color-primary);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.heading-with-action {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.form-card .form-field + .form-field,
.form-card .form-field + .selection-summary,
.form-card .selection-summary + .form-field,
.form-card .form-field + .format-note,
.form-card .format-note + .checkbox-row,
.form-card .form-field + .checkbox-row {
  margin-top: 1.15rem;
}

.form-card > .button,
.form-card > .btn {
  margin-top: 1.25rem;
}

.form-card > :last-child {
  margin-bottom: 0;
}

.form-field label span {
  color: var(--color-muted);
  font-size: 0.88rem;
  font-weight: 600;
}

.upload-form {
  max-width: 43rem;
  margin-inline: auto;
}

.upload-form .selection-summary {
  margin-bottom: 1.15rem;
}

.resubmission-details {
  margin-top: 1.15rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #f8fafc;
}

.resubmission-details summary {
  display: flex;
  min-height: 3.4rem;
  align-items: center;
  padding: 0.7rem 1rem;
  color: var(--color-primary);
  font-weight: 820;
  cursor: pointer;
}

.resubmission-details summary::before {
  content: "▸";
  margin-right: 0.55rem;
  font-size: 1.05rem;
  line-height: 1;
}

.resubmission-details[open] summary::before {
  content: "▾";
}

.resubmission-details summary:hover {
  background: var(--color-primary-soft);
}

.resubmission-details summary:focus-visible {
  border-radius: var(--radius-sm);
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

.resubmission-details[open] summary {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-primary-soft);
}

.resubmission-content {
  padding: 1rem;
}

.resubmission-details + .form-field {
  margin-top: 1.15rem;
}

.honeypot {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.format-note {
  padding: 1rem;
  border-left: 0.35rem solid var(--color-info);
  border-radius: var(--radius-sm);
  background: var(--color-info-soft);
  color: #16445d;
}

.format-note p {
  margin: 0.25rem 0 0;
}

.checkbox-row {
  display: flex;
  min-height: 3.25rem;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #f8fafc;
  cursor: pointer;
}

.checkbox-row:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.checkbox-row input[type="checkbox"] {
  width: 1.4rem;
  height: 1.4rem;
  flex: 0 0 auto;
  margin: 0.1rem 0 0;
  accent-color: var(--color-primary);
}

.button-primary {
  background: var(--color-primary);
  color: #fff;
}

.button-secondary {
  border-color: var(--color-primary);
  background: #fff;
  color: var(--color-primary);
}

.button-secondary:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-hover);
}

.button-quiet {
  border-color: var(--color-border);
  background: transparent;
  color: var(--color-text);
}

.button-quiet:hover {
  border-color: var(--color-border-strong);
  background: #e8edf3;
  color: var(--color-text);
}

.button-large {
  min-height: 3.4rem;
  padding: 0.8rem 1.25rem;
  font-size: 1.02rem;
}

.button-full {
  width: 100%;
}

.alert-success {
  border-color: #6fc494;
  background: var(--color-success-soft);
  color: #0e4f31;
}

.alert-warning {
  border-color: #d4a843;
  background: var(--color-warning-soft);
  color: #6f3b05;
}

.alert-error,
.alert-danger {
  border-color: #da7474;
  background: var(--color-danger-soft);
  color: #7f1515;
}

.alert-info {
  border-color: #60a9cf;
  background: var(--color-info-soft);
  color: #06496c;
}

.main-content > .alert {
  margin-bottom: 1.25rem;
}

.admin-nav {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  border: 0;
}

.admin-nav form {
  margin: 0;
}

.admin-nav > a,
.admin-nav form .button {
  min-height: 3rem;
}

.admin-nav > a {
  padding-inline: 0.8rem;
  border: 0;
  border-radius: var(--radius-sm);
}

.admin-nav > a:hover {
  background: var(--color-primary-soft);
}

.stats-grid .stat-card strong,
.stats-grid .stat-card span {
  display: block;
}

.stats-grid .stat-card strong {
  font-size: clamp(1.65rem, 4vw, 2.25rem);
  font-weight: 900;
  line-height: 1.15;
}

.stats-grid .stat-card span {
  margin-top: 0.25rem;
  color: var(--color-muted);
  font-weight: 700;
}

.stat-new {
  border-color: #9cbbe9;
  background: var(--color-primary-soft);
}

.stat-done {
  border-color: #7ac19a;
  background: var(--color-success-soft);
}

.filters {
  grid-template-columns: minmax(8rem, 0.9fr) minmax(10rem, 1.15fr)
    minmax(8rem, 0.85fr) minmax(12rem, 1.25fr) auto auto;
}

.filters .form-field {
  margin: 0;
}

.filters .button {
  min-width: 6.5rem;
}

.table-card {
  padding: 0;
  overflow: hidden;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table td small {
  display: block;
  margin-top: 0.2rem;
  color: var(--color-muted);
}

.table-action {
  width: 1%;
  text-align: right;
  white-space: nowrap;
}

.status {
  display: inline-flex;
  min-height: 1.85rem;
  align-items: center;
  justify-content: center;
  padding: 0.2rem 0.58rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #eef2f7;
  color: #344054;
  font-size: 0.82rem;
  font-weight: 850;
  line-height: 1.2;
  white-space: nowrap;
}

.status-submitted {
  border-color: #9cbbe9;
  background: var(--color-primary-soft);
  color: #123d72;
}

.status-viewed {
  border-color: #d7ad4b;
  background: var(--color-warning-soft);
  color: #6f3b05;
}

.status-graded {
  border-color: #7ac19a;
  background: var(--color-success-soft);
  color: #0e5333;
}

.two-column-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 1rem;
}

.structure-list {
  margin-top: 2rem;
}

.structure-list > h2 {
  margin-bottom: 1rem;
}

.semester-card + .semester-card {
  margin-top: 1rem;
}

.card-heading,
.document-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.card-heading h3,
.card-heading p {
  margin-bottom: 0;
}

.subject-list {
  margin-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.subject-row {
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.subject-row:last-child {
  border-bottom: 0;
}

.subject-row small {
  display: block;
  margin-top: 0.2rem;
  color: var(--color-muted);
}

.is-inactive {
  background: #edf0f4;
  color: #5f6b7c;
}

.is-inactive > :not(form),
.subject-row.is-inactive > div {
  opacity: 0.7;
}

.auth-shell {
  display: grid;
  min-height: min(34rem, 70vh);
  place-items: center;
}

.auth-card {
  width: min(100%, 31rem);
}

.success-card {
  width: min(100%, 43rem);
  margin-inline: auto;
  text-align: center;
}

.success-icon {
  display: grid;
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  place-items: center;
  border-radius: 50%;
  background: var(--color-success-soft);
  color: var(--color-success);
  font-size: 2rem;
  font-weight: 900;
}

.summary-list {
  display: grid;
  gap: 0;
  margin: 1.5rem 0;
  border-block: 1px solid var(--color-border);
  text-align: left;
}

.summary-list > div {
  display: grid;
  grid-template-columns: minmax(7rem, 0.8fr) minmax(0, 1.3fr);
  gap: 1rem;
  padding-block: 0.7rem;
  border-bottom: 1px solid var(--color-border);
}

.summary-list > div:last-child {
  border-bottom: 0;
}

.summary-list dt {
  color: var(--color-muted);
  font-weight: 700;
}

.summary-list dd {
  margin: 0;
  font-weight: 750;
  overflow-wrap: anywhere;
}

.summary-list.compact {
  margin-bottom: 0;
}

.receipt-box {
  margin-block: 1rem;
  padding: 1rem;
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
}

.receipt-box span,
.receipt-box strong,
.receipt-code {
  display: block;
}

.receipt-box span {
  color: var(--color-muted);
  font-size: 0.9rem;
}

.receipt-box strong,
.receipt-code {
  margin-top: 0.25rem;
  color: #123765;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas,
    "Liberation Mono", monospace;
  font-size: clamp(1.2rem, 5vw, 1.75rem);
  font-weight: 900;
  letter-spacing: 0.06em;
  line-height: 1.45;
  text-decoration: none;
  overflow-wrap: anywhere;
  cursor: text;
  -webkit-user-select: all;
  user-select: all;
}

.receipt-code:focus-visible {
  border-radius: 0.2rem;
  outline: 3px solid var(--color-primary);
  outline-offset: 4px;
}

.receipt-help {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 0.8rem;
  font-weight: 750;
}

.review-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 23rem);
  align-items: start;
  gap: 1.25rem;
}

.document-card {
  min-width: 0;
  padding: 0;
  overflow: hidden;
}

.document-heading {
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.document-heading small {
  display: block;
  margin-top: 0.15rem;
  color: var(--color-muted);
}

.document-preview {
  display: block;
  width: 100%;
  min-height: min(72vh, 52rem);
  border: 0;
  background: #fff;
}

.image-preview {
  display: block;
  width: auto;
  max-width: calc(100% - 2rem);
  max-height: 75vh;
  margin: 1rem auto;
  object-fit: contain;
}

.no-preview {
  display: grid;
  min-height: 22rem;
  place-items: center;
  align-content: center;
  padding: 2rem;
  color: var(--color-muted);
  text-align: center;
}

.no-preview h2 {
  margin-bottom: 0.4rem;
}

.no-preview p {
  max-width: 35rem;
}

.review-sidebar {
  display: grid;
  gap: 1rem;
}

.history-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.history-notice p {
  margin: 0.2rem 0 0;
}

.history-notice .button {
  flex: 0 0 auto;
}

.readonly-review .summary-list {
  margin-bottom: 0;
}

.readonly-feedback {
  white-space: pre-wrap;
}

.metadata-code {
  display: block;
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: 0.78rem;
  line-height: 1.45;
  user-select: all;
}

.versions-card a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.versions-card a:hover {
  background: var(--color-primary-soft);
}

.versions-card small {
  color: var(--color-muted);
}

.error-state {
  width: min(100%, 45rem);
  margin-inline: auto;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.pagination .pagination__summary {
  min-width: auto;
  border-color: transparent;
  background: transparent;
  color: var(--color-text);
  font-weight: 800;
  white-space: nowrap;
}

.pagination .pagination__disabled {
  border-color: #d7dde6;
  background: #e8edf3;
  color: #68758a;
  cursor: not-allowed;
}

@media (max-width: 56rem) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .filters .filter-search {
    grid-column: 1 / -1;
  }

  .review-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 42rem) {
  .container {
    width: min(100% - 1.25rem, var(--content-width));
  }

  .site-header__inner,
  .header-inner,
  .page-header__row,
  .heading-with-action,
  .card__header,
  .preview-panel__toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .site-header__inner,
  .header-inner {
    padding-block: 0.65rem;
  }

  .admin-nav {
    display: grid;
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .admin-nav > a {
    justify-content: center;
    text-align: center;
    white-space: normal;
  }

  .admin-nav form {
    grid-column: 1 / -1;
  }

  .admin-nav form .button {
    width: 100%;
  }

  .site-header__actions,
  .site-header__actions .button,
  .site-header__actions .btn {
    width: 100%;
  }

  .grid--2,
  .form-grid,
  .two-column-layout,
  .filters {
    grid-template-columns: 1fr;
  }

  .filters .filter-search {
    grid-column: auto;
  }

  .form-field--full,
  .field--full {
    grid-column: auto;
  }

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

  .form-actions .button,
  .form-actions .btn,
  .actions .button,
  .actions .btn {
    width: 100%;
  }

  .detail-list {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }

  .detail-list dd + dt {
    margin-top: 0.7rem;
  }

  .card-heading,
  .subject-row {
    align-items: stretch;
    flex-direction: column;
  }

  .card-heading form .button,
  .subject-row form .button {
    width: 100%;
  }

  .summary-list > div {
    grid-template-columns: 1fr;
    gap: 0.1rem;
  }

  .data-table {
    min-width: 0;
  }

  .data-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .data-table,
  .data-table tbody,
  .data-table tr,
  .data-table td {
    display: block;
    width: 100%;
  }

  .data-table tr {
    padding: 0.5rem 0;
    border-bottom: 0.65rem solid var(--color-bg);
  }

  .data-table tr:last-child {
    border-bottom: 0;
  }

  .data-table td {
    display: grid;
    grid-template-columns: minmax(6.5rem, 38%) minmax(0, 1fr);
    gap: 0.75rem;
    border: 0;
    text-align: right;
    white-space: normal;
  }

  .data-table td::before {
    content: attr(data-label);
    color: var(--color-muted);
    font-weight: 800;
    text-align: left;
  }

  .data-table .table-action {
    display: block;
    padding-top: 0.5rem;
  }

  .data-table .table-action::before {
    content: none;
  }

  .data-table .table-action .button {
    width: 100%;
  }

  .history-notice {
    align-items: stretch;
    flex-direction: column;
  }

  .history-notice .button {
    width: 100%;
  }

  .pagination {
    align-items: stretch;
    flex-direction: column;
  }

  .pagination a,
  .pagination span {
    width: 100%;
  }

  .pagination .pagination__summary {
    order: -1;
    white-space: normal;
  }
}

@media (max-width: 28rem) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 1rem;
    border-radius: var(--radius-md);
  }

  input[type="file"]::file-selector-button {
    display: block;
    width: 100%;
    margin: 0 0 0.65rem;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media print {
  body {
    background: #fff;
  }

  .site-header,
  .admin-nav,
  .site-footer,
  .form-actions,
  .actions,
  .filters,
  .table-actions,
  .button,
  .btn {
    display: none !important;
  }

  .card,
  .table-wrap {
    border-color: #999;
    box-shadow: none;
  }

  .table-wrap {
    overflow: visible;
  }

  .data-table {
    min-width: 0;
  }
}