/*
 * V0.5.9 Arabic Typography Foundation
 *
 * UI role:
 *   Noto Sans Arabic
 *
 * Educational reading role:
 *   Noto Naskh Arabic
 *
 * Optional WOFF2 binaries are resolved locally; fallbacks remain operational.
 */

@font-face {
  font-family: "Noto Sans Arabic";
  src: url("/static/fonts/NotoSansArabic-Variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}

@font-face {
  font-family: "Noto Naskh Arabic";
  src: url("/static/fonts/NotoNaskhArabic-Variable.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --font-arabic-ui:
    "Noto Sans Arabic",
    "Segoe UI",
    Tahoma,
    Arial,
    sans-serif;

  --font-arabic-reading:
    "Noto Naskh Arabic",
    "Amiri",
    "Traditional Arabic",
    Tahoma,
    serif;
}


html[dir="rtl"] body {
  font-family:
    var(--font-arabic-ui);
}


/*
 * Arabic educational content should favor readability
 * and correct Arabic shaping over compact UI density.
 */
html[dir="rtl"] :is(
  .question-prompt,
  .question-text,
  .student-question,
  .exam-question,
  .candidate-prompt,
  .source-excerpt,
  [data-arabic-content="true"]
) {
  font-family:
    var(--font-arabic-reading);

  font-kerning: normal;

  font-feature-settings:
    "rlig" 1,
    "calt" 1,
    "liga" 1;

  font-synthesis: none;

  letter-spacing: normal;

  line-height: 1.75;

  text-rendering:
    optimizeLegibility;
}


/*
 * Controls stay compact and UI-oriented.
 */
html[dir="rtl"] :is(
  button,
  input,
  select,
  textarea,
  .btn,
  .badge,
  .mobile-bottom
) {
  font-family:
    var(--font-arabic-ui);
}

@media (min-width: 821px) {
  .teacher-main { padding: 24px 28px 34px; }
  .page-header { margin-block-end: 20px; min-height: auto; }
  .card { padding: 18px; }
  .stack, .quiz-list { gap: 14px; }
  .sidebar { padding: 18px 14px; }
  .nav-link { min-height: 42px; }
}

.source-stage-progress { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-block: 10px; color: var(--muted); }
.source-stage-progress strong { color: var(--foreground); }
.notification-shell-tools { min-block-size: 38px; margin-block-end: .65rem; display: flex; align-items: flex-start; justify-content: flex-end; gap: .5rem; }
.notification-trigger { position: relative; min-block-size: 36px; padding: .42rem .65rem; display: inline-flex; align-items: center; gap: .4rem; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); color: var(--muted); font-size: .78rem; }
.notification-trigger:hover { color: var(--primary-strong); border-color: color-mix(in srgb, var(--primary) 35%, var(--border)); }
.notification-count { min-inline-size: 1.15rem; block-size: 1.15rem; padding-inline: .22rem; display: grid; place-items: center; border-radius: 999px; background: var(--danger); color: white; font-size: .64rem; font-weight: 800; line-height: 1; }
.global-activity { display: none; min-inline-size: 0; }
.global-activity.is-active { display: flex; flex: 1; flex-wrap: wrap; gap: .4rem; }
.background-job { min-inline-size: 0; max-inline-size: 23rem; min-block-size: 36px; display: flex; align-items: center; gap: .42rem; padding: .4rem .68rem; border: 1px solid color-mix(in srgb, var(--primary) 24%, var(--border)); border-radius: 999px; background: var(--primary-softer); color: var(--foreground); font-size: .76rem; }
.activity-title { white-space: nowrap; font-weight: 750; }
.activity-stage { min-inline-size: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.activity-percentage { unicode-bidi: isolate; }
.activity-dot { inline-size: 8px; block-size: 8px; border-radius: 50%; background: var(--primary); animation: activity-pulse 1.4s ease-in-out infinite; }
@keyframes activity-pulse { 50% { opacity: .35; transform: scale(.82); } }
@media (prefers-reduced-motion: reduce) { .activity-dot { animation: none; } }
@media (max-width: 820px) {
  .notification-shell-tools { align-items: stretch; }
  .notification-trigger-label { display: none; }
  .notification-trigger { flex: 0 0 38px; justify-content: center; padding-inline: .45rem; }
  .notification-count { position: absolute; inset-block-start: -.3rem; inset-inline-end: -.28rem; }
  .global-activity.is-active { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .background-job { flex: 1 0 min(17rem, calc(100vw - 5.5rem)); max-inline-size: calc(100vw - 5.5rem); }
}

/* V0.5.9 premium hardening: hierarchy first, decoration second. */
:root {
  --radius: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 14px rgba(45, 42, 36, .045);
}

.page-header,
.dashboard-hero {
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.page-header { padding: 0 0 14px; }
.page-title, .dashboard-title { font-size: clamp(1.35rem, 2vw, 1.75rem); }
.page-subtitle, .dashboard-subtitle { max-width: 52rem; margin-block-start: 3px; }
.page-eyebrow { display: none; }
.dashboard-hero { min-height: 0; padding: 0 0 16px; margin: 0; align-items: center; }
.dashboard-hero::before { display: none; }
.dashboard-title { margin: 0; }

.card { border-color: color-mix(in srgb, var(--border) 88%, var(--foreground)); box-shadow: none; }
.quiz-row-card { border-radius: 12px; background: var(--surface); }
.quiz-row-card:hover { box-shadow: var(--shadow-sm); }
.stats-grid { gap: 10px; }
.stat-card { min-height: 0; padding: 14px 15px; border-radius: 11px; }
.stat-icon-wrap { box-shadow: none; }
.section-heading { margin-block: 20px 10px; }
.section-heading p { display: none; }
.quiz-list { gap: 10px; }
.badge, .metric-chip, .audience-pill { border-radius: 7px; }

.form-card, .narrow-card { border-radius: 12px; box-shadow: none; }
.narrow-card { max-width: 34rem; }
.field { gap: 6px; }
.stack { gap: 14px; }
.input, .select, .student-select { min-height: 43px; padding-block: 9px; border-radius: 9px; }
.textarea { border-radius: 9px; }
.password-toggle { min-height: 32px; border-radius: 7px; }
.btn { box-shadow: none; }
.btn-primary { background: var(--primary); box-shadow: none; }
.btn-primary:hover { box-shadow: none; }

html[dir="rtl"] :is(
  .answer-prompt,
  .group-instructions,
  .source-page-text,
  .candidate-card .quiz-title,
  .public-instructions
) {
  font-family: var(--font-arabic-reading);
  line-height: 1.75;
}

@media (max-width: 820px) {
  .page-header { padding-block-end: 10px; margin-block-end: 8px; }
  .dashboard-hero { padding-block-end: 10px; }
  .dashboard-title, .page-title { font-size: 1.12rem; }
  .dashboard-subtitle, .page-subtitle { font-size: .76rem; line-height: 1.6; }
  .stats-grid { gap: 7px; }
  .stat-card { padding: 11px 12px; border-radius: 10px; }
  .quiz-list { border-radius: 10px; }
  .quiz-row-card { padding: 12px; }
  .quiz-card-actions .btn { min-height: var(--ux-control-height, 44px); }
  .form-card, .narrow-card { padding: 14px; border-radius: 10px; }
  .input, .select, .student-select { min-height: 44px; }
  .field-label { font-size: .84rem; }
}


/* =========================================================
   V0.5.9 FIRST-PARTY CONTROL SURFACES
   ========================================================= */

.app-native-select,
.app-native-file {
  position: absolute !important;
  inline-size: 1px !important;
  block-size: 1px !important;
  opacity: 0 !important;
  pointer-events: none !important;
  overflow: hidden !important;
}

.app-select {
  position: relative;
  inline-size: 100%;
  min-inline-size: 0;
}

.app-select-trigger {
  inline-size: 100%;
  min-block-size: 40px;
  padding: 0.48rem 2.25rem 0.48rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface, #fff);
  color: var(--foreground);
  font: inherit;
  text-align: right;
  cursor: pointer;
  position: relative;
}

.app-select-trigger::after {
  content: "";
  position: absolute;
  inset-inline-start: 0.8rem;
  inset-block-start: 50%;
  inline-size: 0.45rem;
  block-size: 0.45rem;
  border-inline-end: 1.5px solid currentColor;
  border-block-end: 1.5px solid currentColor;
  transform: translateY(-65%) rotate(45deg);
  opacity: 0.6;
}

.app-select-trigger:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

.app-select-menu {
  position: absolute;
  z-index: 90;
  inset-inline: 0;
  inset-block-start: calc(100% + 0.35rem);
  max-block-size: 280px;
  overflow: auto;
  padding: 0.35rem;
  background: var(--surface, #fff);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow:
    0 14px 36px
    rgb(30 20 28 / 12%);
}

.app-select-option {
  display: block;
  inline-size: 100%;
  min-block-size: 38px;
  padding: 0.48rem 0.65rem;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--foreground);
  font: inherit;
  text-align: right;
  cursor: pointer;
}

.app-select-option:hover,
.app-select-option:focus-visible {
  background: var(
    --surface-subtle,
    #f5f1f4
  );
  outline: none;
}

.app-select-option.is-selected {
  background: color-mix(
    in srgb,
    var(--primary) 10%,
    transparent
  );
  color: var(--primary-strong);
}

.app-select-option:disabled {
  opacity: 0.46;
  cursor: default;
}

.app-file-picker {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  min-block-size: 42px;
  padding: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface, #fff);
}

.app-file-button {
  flex: 0 0 auto;
  min-block-size: 34px;
  padding: 0.42rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(
    --surface-subtle,
    #f7f4f6
  );
  color: var(--foreground);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
}

.app-file-name {
  min-inline-size: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
  font-size: 0.88rem;
}

.app-file-picker.has-file
.app-file-name {
  color: var(--foreground);
}

.field.has-error
:is(
  .input,
  .textarea,
  .app-select-trigger,
  .app-file-picker
) {
  border-color: var(--danger, #a23b48);
}

.field-error {
  margin: 0.32rem 0 0;
  color: var(--danger, #a23b48);
  font-size: 0.79rem;
  line-height: 1.45;
}

.field .input,
.field .textarea {
  text-align: right;
}

.phone-input {
  direction: ltr;
  text-align: right !important;
  unicode-bidi: plaintext;
  font-variant-numeric: tabular-nums;
}

.student-code {
  text-align: center !important;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
}

/*
 * Visual button density: size hierarchy comes from padding/font-size, not
 * from varying which buttons meet the app's own --ux-control-height (44px)
 * touch-target minimum. Every button variant meets it.
 */
.btn {
  min-block-size: var(--ux-control-height, 44px);
  padding-block: 0.45rem;
  padding-inline: 0.72rem;
}

.btn-sm {
  min-block-size: var(--ux-control-height, 44px);
  padding-block: 0.35rem;
  padding-inline: 0.58rem;
  font-size: .84rem;
}

.btn-lg {
  min-block-size: var(--ux-control-height, 44px);
  padding-block: 0.52rem;
  padding-inline: 0.88rem;
}

/*
 * The enhanced exam shows one question at a time;
 * no question needs a desktop-sized artificial canvas.
 */
.student-form.is-enhanced
.student-question {
  min-block-size: 0 !important;
  block-size: auto !important;
}

.student-question
.app-select {
  margin-block-start: 0.65rem;
}

.done-action {
  margin-block-start: 1rem;
}


@media (max-width: 640px) {

  .btn {
    min-block-size: 40px;
  }

  .btn-lg {
    min-block-size: 44px;
  }

  .app-select-trigger {
    min-block-size: 44px;
  }

  .app-select-menu {
    position: fixed;
    z-index: 260;
    inset-inline: 0.75rem;
    inset-block-start: auto;
    inset-block-end:
      max(
        0.75rem,
        env(safe-area-inset-bottom)
      );
    max-block-size: min(52vh, 420px);
    border-radius: 16px;
    padding: 0.5rem;
    box-shadow:
      0 -12px 40px
      rgb(30 20 28 / 16%);
  }

  .app-select-option {
    min-block-size: 44px;
    padding-block: 0.6rem;
  }

  .app-file-picker {
    min-block-size: 46px;
  }

  .student-form.is-enhanced
  .student-question {
    padding-block: 0.85rem !important;
  }
}


/* =========================================================
   V0.5.9 SOURCE MOBILE + PRIVACY HARDENING
   ========================================================= */

/*
 * Source review must never establish an intrinsic
 * width larger than the application viewport.
 */
.source-split,
.source-split > *,
.source-review-pane,
.source-review-form,
.source-import-toolbar,
.source-import-action,
.candidate-card,
.candidate-top,
.candidate-options,
.source-summary-card,
.source-context-actions {
  min-inline-size: 0;
  max-inline-size: 100%;
}

.source-split {
  inline-size: 100%;
}

.source-review-pane {
  overflow: visible;
}

.candidate-prompt,
.candidate-section,
.candidate-option,
.source-stage-progress,
.source-summary-card,
.source-row-card .quiz-title {
  overflow-wrap: anywhere;
}

.source-context-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
}

.source-context-actions > * {
  min-inline-size: 0;
}

.source-context-actions
.inline-form {
  margin: 0;
}


/*
 * First-party checkbox/radio surfaces.
 * Native semantics remain in the DOM; browser chrome
 * does not remain visible.
 */
input[type="checkbox"],
input[type="radio"] {
  -webkit-appearance: none;
  appearance: none;
  inline-size: 18px;
  block-size: 18px;
  min-inline-size: 18px;
  margin: 0;
  border: 1.5px solid
    color-mix(
      in srgb,
      var(--foreground) 34%,
      var(--border)
    );
  background-color: var(--surface);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 12px 12px;
  vertical-align: middle;
  cursor: pointer;
}

input[type="checkbox"] {
  border-radius: 5px;
}

input[type="radio"] {
  border-radius: 50%;
}

input[type="checkbox"]:checked {
  border-color: var(--primary);
  background-color: var(--primary);
  background-image:
    url("data:image/svg+xml,%3Csvg xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27 viewBox%3D%270 0 16 16%27 fill%3D%27none%27 stroke%3D%27white%27 stroke-width%3D%272%27 stroke-linecap%3D%27round%27 stroke-linejoin%3D%27round%27%3E%3Cpath d%3D%27M3 8l3 3 7-7%27/%3E%3C/svg%3E");
}

input[type="radio"]:checked {
  border-color: var(--primary);
  background:
    radial-gradient(
      circle,
      white 0 28%,
      var(--primary) 30% 100%
    );
}

input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible {
  outline: 2px solid
    color-mix(
      in srgb,
      var(--primary) 30%,
      transparent
    );
  outline-offset: 2px;
}

input[type="checkbox"]:disabled,
input[type="radio"]:disabled {
  opacity: .46;
  cursor: default;
}


/*
 * Registry phone values are identity metadata,
 * not the dominant visual signal.
 */
.registry-table-reference,
.registry-mobile-meta {
  font-variant-numeric: tabular-nums;
}


/*
 * Tablet/mobile source detail:
 * one application column with deliberate actions.
 */
@media (max-width: 900px) {

  .page-header-context
  > .header-actions
  > .source-context-actions {
    inline-size: 100%;
    display: grid;
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
    gap: .42rem;
  }

  .source-context-actions
  > * {
    inline-size: 100%;
    max-inline-size: 100%;
  }

  .source-context-actions
  > .btn-primary {
    grid-column: 1 / -1;
  }

  .source-context-actions
  > .btn,
  .source-context-actions
  > .inline-form
  .btn {
    inline-size: 100%;
    min-inline-size: 0;
    justify-content: center;
    white-space: normal;
    text-align: center;
  }

  .source-split {
    grid-template-columns:
      minmax(0, 1fr);
    gap: .65rem;
    overflow-x: clip;
  }

  .source-import-toolbar {
    grid-template-columns:
      minmax(0, 1fr);
  }
}


/*
 * Phone review is task-first:
 * extracted questions are primary.
 *
 * Embedded browser PDF viewers are unreliable and
 * waste substantial vertical area on narrow screens.
 * The explicit "فتح الأصل" action remains available.
 */
@media (max-width: 620px) {

  .source-split
  > .source-preview-pane {
    display: none;
  }

  .source-split {
    gap: 0;
  }

  .source-summary-card {
    padding: .72rem;
    margin-block-end: .65rem;
  }

  .source-metrics {
    grid-template-columns:
      repeat(3, minmax(0, 1fr));
    gap: .35rem;
    margin-block-start: .58rem;
  }

  .source-metric {
    min-inline-size: 0;
    padding: .48rem .42rem;
    border-radius: 9px;
    text-align: center;
  }

  .source-metric strong {
    font-size: 1rem;
  }

  .source-metric span {
    font-size: .66rem;
    line-height: 1.35;
  }

  .source-import-toolbar {
    position: static;
    inset: auto;
    padding: .55rem;
    margin-block-end: .55rem;
    border-radius: 10px;
    box-shadow: none;
    backdrop-filter: none;
  }

  .candidate-card {
    gap: .45rem;
    padding: .68rem;
    border-radius: 10px;
  }

  .candidate-top {
    gap: .4rem;
  }

  .candidate-prompt {
    font-size: .93rem;
    line-height: 1.7;
  }

  .candidate-options {
    gap: .3rem;
  }

  .candidate-option {
    padding: .26rem .46rem;
    border-radius: 7px;
    font-size: .75rem;
  }

  .source-policy-card {
    padding: .62rem .68rem;
    margin-block-end: .65rem;
  }

  .source-policy-card
  .section-title {
    font-size: .88rem;
  }

  .source-policy-card p {
    font-size: .75rem;
    line-height: 1.55;
  }

  .source-row-card {
    padding: .68rem;
    gap: .6rem;
  }

  .source-file-icon {
    inline-size: 36px;
    block-size: 36px;
    flex-basis: 36px;
    border-radius: 9px;
  }

  .page-header-context
  .page-title {
    overflow-wrap: anywhere;
  }
}


/* =========================================================
   V0.6.1 ACTION, VALIDATION, AND TOOLTIP CONSOLIDATION
   ========================================================= */

.field-label-row {
  min-inline-size: 0;
  display: flex;
  align-items: center;
  gap: .35rem;
}

.app-tooltip-trigger {
  position: relative;
  inline-size: 32px;
  block-size: 32px;
  min-inline-size: 32px;
  min-block-size: 32px;
  display: inline-grid;
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  cursor: help;
}

.app-tooltip-trigger:hover,
.app-tooltip-trigger[aria-expanded="true"] {
  background: var(--surface-soft);
  color: var(--primary-strong);
}

.app-tooltip-trigger .ui-icon {
  inline-size: .95rem;
  block-size: .95rem;
}

.app-tooltip {
  position: fixed;
  z-index: 520;
  inline-size: max-content;
  max-inline-size: min(17rem, calc(100vw - 1rem));
  padding: .48rem .6rem;
  border: 1px solid color-mix(in srgb, var(--foreground) 18%, var(--border));
  border-radius: 8px;
  background: var(--foreground);
  color: var(--surface);
  box-shadow: 0 8px 24px rgb(30 20 28 / 16%);
  font-size: .73rem;
  line-height: 1.55;
  text-align: start;
  pointer-events: none;
}

.app-tooltip[hidden] {
  display: none;
}

.field-error {
  margin-block-start: .35rem;
  padding: .42rem .52rem;
  border-inline-start: 3px solid var(--danger);
  border-radius: 7px;
  background: color-mix(in srgb, var(--danger) 7%, var(--surface));
  color: var(--danger);
  font-size: .76rem;
}

.field.has-error
:is(
  .input,
  .textarea,
  .app-select-trigger,
  .app-file-picker
) {
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--danger) 10%, transparent);
}

.btn-tertiary {
  color: var(--primary-strong);
  background: transparent;
  border-color: transparent;
  box-shadow: none;
}

.btn-tertiary:hover {
  background: var(--primary-softer);
  border-color: transparent;
}

.card-context-action {
  align-self: center;
  inline-size: fit-content;
}

.public-form-submit {
  inline-size: min(100%, 16rem);
  justify-self: start;
}

.result-overview-card > .card-context-action {
  flex: 0 0 auto;
}

.source-import-toolbar {
  grid-template-columns: minmax(240px, 1fr) auto;
  align-items: center;
}

.source-import-toolbar > .field {
  grid-column: 1;
  grid-row: 1;
}

.source-import-requirement {
  grid-column: 1;
  grid-row: 2;
  margin: -.35rem 0 0;
}

.source-import-action {
  grid-column: 2;
  grid-row: 1 / span 2;
  align-self: center;
}

.source-import-action .btn {
  inline-size: auto;
  max-inline-size: 100%;
}

.source-import-submit:disabled {
  color: var(--muted);
  background: var(--surface-soft);
  border-color: var(--border);
  opacity: .72;
  cursor: not-allowed;
}

.source-audit-toolbar {
  gap: .25rem;
}

.source-audit-toolbar .btn {
  box-shadow: none;
}

.source-audit-zoom {
  min-inline-size: 36px;
}

@media (max-width: 900px) {
  .source-context-actions,
  .page-header-context
  > .header-actions
  > .source-context-actions {
    inline-size: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
  }

  .source-context-actions > *,
  .source-context-actions > .btn,
  .source-context-actions > .inline-form,
  .source-context-actions > .inline-form .btn,
  .source-context-actions > .btn-primary {
    inline-size: auto;
    max-inline-size: 100%;
    grid-column: auto;
  }

  .student-operations-bar {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
  }

  .student-operations-bar .btn,
  .student-operations-bar .btn-primary {
    inline-size: auto;
    flex: 0 1 auto;
    grid-column: auto;
  }

  .result-overview-card > .card-context-action,
  .review-form .btn {
    inline-size: auto;
    align-self: flex-start;
  }

  .app-tooltip-trigger {
    inline-size: var(--touch-target);
    block-size: var(--touch-target);
    min-inline-size: var(--touch-target);
    min-block-size: var(--touch-target);
  }
}

@media (max-width: 620px) {
  .source-import-toolbar {
    grid-template-columns: minmax(0, 1fr);
    align-items: start;
  }

  .source-import-toolbar > .field,
  .source-import-requirement,
  .source-import-action {
    grid-column: 1;
    grid-row: auto;
  }

  .source-import-action {
    justify-self: start;
  }

  .source-import-action .btn {
    inline-size: auto;
    white-space: normal;
    text-align: center;
  }

  .public-form-submit {
    inline-size: min(100%, 15rem);
  }
}


/* =========================================================
   V0.6.1 SHARED APPLICATION REFINEMENT
   ========================================================= */

:root {
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --page-gutter: clamp(1rem, 2.4vw, 1.75rem);
  --control-height: 40px;
  --touch-target: 44px;
  --content-max: 1180px;
  --topbar-height: 58px;
  --bottom-nav-height: 64px;
  --radius: 12px;
  --radius-sm: 9px;
}

.teacher-workspace {
  flex: 1 1 auto;
  min-inline-size: 0;
}

.app-topbar {
  position: sticky;
  z-index: 40;
  inset-block-start: 0;
  min-block-size: var(--topbar-height);
  padding-inline: var(--page-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  border-block-end: 1px solid var(--border);
  background: color-mix(in srgb, var(--background) 96%, var(--surface));
}

.app-topbar .mobile-title {
  min-inline-size: 0;
}

.app-topbar .mobile-brand {
  color: var(--muted);
  font-size: .68rem;
  font-weight: 700;
}

.app-topbar .mobile-screen-title {
  margin-block-start: .05rem;
  color: var(--foreground);
  font-size: .88rem;
  font-weight: 780;
}

.shell-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex: 0 0 auto;
}

.notification-trigger-region {
  display: flex;
}

.notification-trigger {
  position: relative;
  inline-size: var(--control-height);
  min-inline-size: var(--control-height);
  block-size: var(--control-height);
  min-block-size: var(--control-height);
  padding: 0;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--foreground);
  background: var(--surface);
}

.notification-trigger-label {
  display: none;
}

.notification-trigger .ui-icon {
  inline-size: 1.1rem;
  block-size: 1.1rem;
}

.notification-count {
  position: absolute;
  inset-block-start: -.28rem;
  inset-inline-end: -.28rem;
  min-inline-size: 1.08rem;
  block-size: 1.08rem;
  padding-inline: .18rem;
  border: 2px solid var(--background);
  font-size: .59rem;
}

.global-activity.is-active {
  margin-block-end: var(--space-3);
  justify-content: flex-start;
}

.background-job {
  min-block-size: 36px;
  border-radius: var(--radius-sm);
}

/* Controls use visual density on desktop and retain 44px touch targets. */
.btn {
  min-block-size: var(--control-height);
  padding: .42rem .78rem;
  gap: .4rem;
  border-radius: var(--radius-sm);
  font-size: .86rem;
  font-weight: 720;
  line-height: 1.35;
}

.btn-sm {
  min-block-size: 36px;
  padding: .34rem .62rem;
  border-radius: 8px;
  font-size: .79rem;
}

.btn-lg {
  min-block-size: 44px;
  padding: .55rem .95rem;
  font-size: .92rem;
}

.btn .ui-icon {
  inline-size: .98rem;
  block-size: .98rem;
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
}

.btn-secondary {
  background: var(--surface);
  border-color: var(--border-strong);
}

.btn-ghost {
  border-color: transparent;
}

.btn-tertiary {
  border-color: transparent;
  background: transparent;
  color: var(--primary-strong);
}

.btn-icon {
  inline-size: var(--control-height);
  padding: 0;
}

.badge,
.metric-chip,
.audience-pill {
  min-block-size: 22px;
  padding: .16rem .45rem;
  border-radius: 6px;
  font-size: .68rem;
  line-height: 1.35;
}

.card {
  border-radius: var(--radius);
  border-color: color-mix(in srgb, var(--border) 90%, var(--foreground));
}

.input,
.select,
.student-select,
.app-select-trigger {
  min-block-size: var(--control-height);
  border-radius: var(--radius-sm);
}

.textarea,
.app-file-picker {
  border-radius: var(--radius-sm);
}

.form-actions {
  gap: var(--space-2);
}

.stack > .btn {
  justify-self: start;
}

.stack > .btn.w-full {
  justify-self: stretch;
}

.table-wrap,
.support-table-wrap,
.report-table-card {
  border-radius: var(--radius);
  box-shadow: none;
}

.data-table :is(th, td),
.report-table :is(th, td) {
  padding-block: .56rem;
}

.app-modal,
.app-modal--sm,
.app-modal--lg {
  border-radius: var(--radius);
}

.app-modal__header,
.app-modal__footer {
  padding: .68rem .75rem;
}

.app-modal__body {
  padding: .75rem;
}

.toast-close,
.teacher-toast-close {
  min-inline-size: var(--touch-target);
  min-block-size: var(--touch-target);
  display: inline-grid;
  place-items: center;
  padding: 0;
  border-radius: 8px;
}

.flash,
.teacher-toast {
  border-radius: 11px;
  box-shadow: 0 12px 32px rgb(30 20 28 / 13%);
}

/* Source cards expose one scan path: identity, status, metadata, action. */
.source-card {
  min-inline-size: 0;
  padding: .8rem .85rem;
  display: grid;
  grid-template-columns: minmax(15rem, 1fr) minmax(13rem, auto) auto;
  align-items: center;
  gap: .65rem 1rem;
}

.source-card-head {
  min-inline-size: 0;
  display: flex;
  align-items: center;
  gap: .65rem;
}

.source-card-identity {
  min-inline-size: 0;
  display: grid;
  gap: .22rem;
}

.source-card-title {
  min-inline-size: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: .92rem;
  line-height: 1.5;
  font-weight: 760;
}

.source-card-title .bidi-filename {
  unicode-bidi: plaintext;
}

.source-card-status-row,
.source-card-meta,
.source-card-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.source-card-meta {
  min-inline-size: 0;
  gap: .2rem .75rem;
  color: var(--muted);
  font-size: .74rem;
  font-variant-numeric: tabular-nums;
}

.source-card-meta > span {
  white-space: nowrap;
}

.source-card-meta-success {
  color: var(--success);
}

.source-card-meta-warning {
  color: var(--warning);
}

.source-card-actions {
  justify-content: flex-end;
}

.source-card-primary-action {
  color: var(--primary-strong);
}

.source-card .source-file-icon {
  inline-size: 36px;
  block-size: 36px;
  flex-basis: 36px;
  border-radius: 9px;
}

.notification-entry {
  padding: .72rem .8rem;
  border-radius: 11px;
}

.notification-action {
  min-block-size: 36px;
  display: inline-flex;
  align-items: center;
  padding-inline: .5rem;
  border-radius: 7px;
}

.mobile-bottom {
  padding-block-start: .2rem;
}

.bottom-link {
  min-block-size: 48px;
  border-radius: 8px;
}

@media (min-width: 901px) {
  .app-topbar .mobile-brand {
    display: none;
  }

  .teacher-main {
    padding: 1.25rem var(--page-gutter) 2.5rem;
  }

  .sidebar {
    block-size: 100dvh;
  }
}

@media (max-width: 900px) {
  :root {
    --topbar-height: 62px;
  }

  .app-topbar {
    position: fixed;
    inset-block-start: 0;
    padding:
      max(.45rem, env(safe-area-inset-top))
      max(.7rem, env(safe-area-inset-right))
      .45rem
      max(.7rem, env(safe-area-inset-left));
  }

  .shell-actions {
    gap: .4rem;
  }

  .notification-trigger,
  .shell-actions > .btn {
    min-inline-size: var(--touch-target);
    min-block-size: var(--touch-target);
    block-size: var(--touch-target);
  }

  .shell-actions > .btn {
    padding-inline: .65rem;
  }

  .teacher-main {
    padding:
      calc(var(--topbar-height) + .65rem)
      max(.7rem, env(safe-area-inset-right))
      calc(
        var(--bottom-nav-height)
        + env(safe-area-inset-bottom, 0px)
        + 1rem
      )
      max(.7rem, env(safe-area-inset-left));
  }

  .btn,
  .btn-sm {
    min-block-size: var(--touch-target);
  }

  .page-header-section.has-actions
  > .header-actions
  > .btn:only-child {
    inline-size: auto;
    min-block-size: var(--touch-target);
  }

  .source-card {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: .72rem .75rem;
  }

  .source-card-head {
    grid-column: 1 / -1;
  }

  .source-card-meta {
    align-self: center;
  }

  .source-card-actions {
    align-self: end;
  }

  .notification-entry {
    gap: .45rem;
  }

  .quiz-card-actions {
    inline-size: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .4rem;
  }

  .quiz-card-actions .btn {
    min-inline-size: 0;
    inline-size: 100%;
    padding-inline: .45rem;
    font-size: .76rem;
  }

  .notification-action {
    min-block-size: var(--touch-target);
  }

  .mobile-bottom {
    min-block-size:
      calc(
        var(--bottom-nav-height)
        + env(safe-area-inset-bottom, 0px)
      );
    padding-block-end: env(safe-area-inset-bottom, 0px);
  }
}

@media (max-width: 430px) {
  .app-topbar .mobile-brand {
    max-inline-size: 9rem;
  }

  .shell-actions > .btn span:not(.ui-icon) {
    display: none;
  }

  .source-card {
    gap: .5rem .65rem;
  }

  .source-card-meta {
    gap: .16rem .55rem;
    font-size: .69rem;
  }

  .source-card-primary-action span:not(.ui-icon) {
    display: inline;
  }
}

@media (min-width: 600px) and (max-width: 900px) {
  .source-card {
    grid-template-columns: minmax(15rem, 1fr) minmax(11rem, auto) auto;
  }

  .source-card-head {
    grid-column: auto;
  }
}


/* =========================================================
   V0.6.0 REVIEWER RELEASE FOUNDATION
   ========================================================= */

.student-operations-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  margin-block-end: .7rem;
}

.student-operations-bar
.btn {
  min-block-size: var(--ux-control-height, 44px);
}

.catalog-grid {
  display: grid;
  grid-template-columns:
    repeat(2, minmax(0, 1fr));
  gap: .75rem;
  margin-block-start: .75rem;
}

.catalog-card {
  padding: .85rem;
}

.catalog-value-list {
  display: grid;
  gap: 0;
  margin-block-start: .55rem;
}

.catalog-value-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .5rem;
  min-block-size: 38px;
  padding-block: .4rem;
  border-block-end:
    1px solid
    color-mix(
      in srgb,
      var(--border) 74%,
      transparent
    );
}

.report-kpis {
  display: grid;
  grid-template-columns:
    repeat(
      auto-fit,
      minmax(150px, 1fr)
    );
  gap: .65rem;
}

.report-kpi {
  display: grid;
  gap: .1rem;
  min-block-size: 0;
  padding: .75rem .8rem;
}

.report-kpi-value {
  font-size: 1.35rem;
}

.report-section {
  display: grid;
  gap: .55rem;
  margin-block-start: 1rem;
}

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

.table-scroll {
  inline-size: 100%;
  overflow-x: auto;
  overscroll-behavior-inline: contain;
}

.report-table {
  inline-size: 100%;
  min-inline-size: 640px;
  border-collapse: collapse;
}

.report-table
:is(th, td) {
  padding: .58rem .65rem;
  border-block-end:
    1px solid var(--border);
  text-align: right;
  vertical-align: top;
}

.report-table th {
  color: var(--muted);
  font-size: .76rem;
  font-weight: 750;
  background:
    color-mix(
      in srgb,
      var(--surface) 88%,
      var(--background)
    );
}


/*
 * Desktop student filter bar:
 * search + status + grade + actions share
 * one visual baseline.
 */
@media (min-width: 821px) {

  .registry-search-form {
    display: grid;
    grid-template-columns:
      minmax(280px, 1fr)
      minmax(150px, 180px)
      minmax(170px, 210px)
      auto;
    gap: .55rem;
    align-items: end;
  }

  .registry-search-field {
    min-inline-size: 0;
  }

  .registry-filter-grid {
    display: contents;
  }

  .registry-filter-field {
    min-inline-size: 0;
  }

  .registry-search-field,
  .registry-filter-field {
    margin: 0;
  }

  .registry-search-actions {
    display: flex;
    align-items: center;
    gap: .35rem;
    min-block-size: 40px;
  }

  .registry-search-form
  :is(
    .input,
    .app-select-trigger,
    .select
  ) {
    min-block-size: 40px;
    block-size: 40px;
  }

  .registry-search-hint {
    display: none;
  }
}


@media (max-width: 820px) {

  .student-operations-bar {
    display: grid;
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
    gap: .42rem;
  }

  .student-operations-bar
  .btn {
    inline-size: 100%;
    min-inline-size: 0;
    justify-content: center;
  }

  .student-operations-bar
  .btn-primary {
    grid-column: 1 / -1;
  }

  .catalog-grid {
    grid-template-columns: 1fr;
  }

  .report-table {
    min-inline-size: 560px;
  }
}


@media (max-width: 430px) {

  .student-operations-bar {
    grid-template-columns: 1fr 1fr;
  }

  .student-operations-bar
  .btn {
    padding-inline: .45rem;
    font-size: .76rem;
  }
}


/* =========================================================
   V0.6.0 SOURCE AUDIT WORKSPACE
   ========================================================= */

.source-preview-pane {
  min-block-size: 0;
  background: var(--surface);
  overflow: hidden;
}

.source-audit-viewer {
  display: grid;
  grid-template-rows:
    auto minmax(0, 1fr);
  min-inline-size: 0;
  inline-size: 100%;
  background: var(--surface);
}

.source-audit-toolbar {
  display: grid;
  grid-template-columns:
    auto 1fr auto;
  align-items: center;
  gap: .45rem;
  padding: .48rem .55rem;
  border-block-end:
    1px solid var(--border);
  background: var(--surface);
}

.source-audit-page-nav,
.source-audit-zoom-tools {
  display: flex;
  align-items: center;
  gap: .3rem;
}

.source-audit-page-count {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .28rem;
  min-inline-size: 0;
  font-size: .78rem;
}

.source-audit-zoom {
  min-inline-size: 34px;
  padding-inline: .45rem;
  font-size: 1rem;
}

.source-audit-stage {
  position: relative;
  min-inline-size: 0;
  max-block-size:
    calc(100vh - 175px);
  overflow: auto;
  padding: .65rem;
  background:
    color-mix(
      in srgb,
      var(--background) 85%,
      var(--foreground) 3%
    );
  overscroll-behavior: contain;
}

.source-audit-page-image {
  display: block;
  inline-size: 100%;
  max-inline-size: 100%;
  block-size: auto;
  margin-inline: auto;
  background: white;
  box-shadow:
    0 2px 12px
    rgb(30 25 28 / 8%);
  transform-origin: top center;
}

.source-audit-image-viewer
.source-audit-page-image {
  max-block-size: 76vh;
  object-fit: contain;
}


/*
 * Human audit gets roughly equal visual importance
 * for the source and the editable question.
 */
@media (min-width: 1101px) {

  .source-split {
    grid-template-columns:
      minmax(390px, .95fr)
      minmax(0, 1.05fr);
    gap: .75rem;
  }

  .source-preview-pane {
    top: .7rem;
  }
}


/*
 * Dynamic answer options:
 * two compact columns where room allows.
 */
.source-review-pane
.option-editor {
  display: grid;
  grid-template-columns:
    repeat(
      2,
      minmax(0, 1fr)
    );
  gap: .48rem;
}

.source-review-pane
.option-editor-row {
  display: grid;
  grid-template-columns:
    auto minmax(0, 1fr) auto;
  align-items: center;
  gap: .38rem;
  min-inline-size: 0;
  padding: .4rem;
  border:
    1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
}

.source-review-pane
.option-editor-row
.input {
  min-inline-size: 0;
  min-block-size: 38px;
}

.option-correct-input {
  flex: 0 0 auto;
}

.option-remove {
  min-block-size: 30px;
  padding-inline: .45rem;
  color: var(--muted);
}

.option-editor-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .6rem;
}

.source-teacher-note {
  min-block-size: 64px;
}


/*
 * Searchable first-party catalog.
 */
.app-select-search {
  display: block;
  inline-size: 100%;
  min-block-size: 40px;
  margin-block-end: .35rem;
  padding: .45rem .65rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--foreground);
  font: inherit;
  text-align: right;
  outline: none;
}

.app-select-search:focus {
  border-color: var(--primary);
  box-shadow:
    0 0 0 2px
    color-mix(
      in srgb,
      var(--primary) 10%,
      transparent
    );
}

.app-select-option-list {
  display: grid;
  gap: .1rem;
  max-block-size: 235px;
  overflow-y: auto;
}

.app-select.is-up
.app-select-menu {
  inset-block-start: auto;
  inset-block-end: calc(100% + .35rem);
}

.app-select-empty {
  margin: .45rem;
  color: var(--muted);
  font-size: .78rem;
  text-align: center;
}


@media (max-width: 900px) {

  .source-audit-stage {
    max-block-size: 58vh;
  }

  .source-audit-toolbar {
    grid-template-columns:
      1fr auto;
  }

  .source-audit-page-count {
    grid-column:
      1 / -1;
    grid-row: 1;
  }

  .source-audit-page-nav {
    grid-column: 1;
    grid-row: 2;
  }

  .source-audit-zoom-tools {
    grid-column: 2;
    grid-row: 2;
    justify-content: flex-end;
  }
}


@media (max-width: 620px) {

  /*
   * Override the previous temporary mobile rule
   * that hid the source preview.
   *
   * V0.6.0 now has a proper first-party viewer,
   * so human audit can use it safely on mobile.
   */
  .source-split
  > .source-preview-pane {
    display: block;
  }

  .source-audit-stage {
    max-block-size: 48vh;
    padding: .4rem;
  }

  .source-audit-toolbar {
    padding: .4rem;
  }

  .source-audit-zoom-tools
  .btn {
    min-block-size: 38px;
    padding-inline: .42rem;
    font-size: .72rem;
  }

  .source-audit-page-nav
  .btn {
    min-block-size: 38px;
  }

  .source-review-pane
  .option-editor {
    grid-template-columns: 1fr;
  }

  .source-review-pane
  .option-editor-row {
    padding: .38rem;
  }

  .app-select-search {
    min-block-size: 44px;
  }

  .app-select-option-list {
    max-block-size:
      min(46vh, 360px);
  }
}


/* =========================================================
   Live teacher operations and student support
   ========================================================= */

.teacher-notifications {
  position: fixed;
  z-index: 420;
  inset-block-end: max(.75rem, env(safe-area-inset-bottom));
  inset-inline-end: .75rem;
  display: grid;
  gap: .5rem;
  pointer-events: none;
}

.teacher-toast {
  inline-size: min(calc(100vw - 1.5rem), 24rem);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: .75rem;
  padding: .78rem .85rem;
  border: 1px solid color-mix(in srgb, var(--primary) 22%, var(--border));
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 18px 45px rgb(30 20 28 / 18%);
  pointer-events: auto;
}

.teacher-toast-failed { border-color: color-mix(in srgb, var(--danger) 35%, var(--border)); }

.teacher-toast strong,
.teacher-toast p {
  margin: 0;
}

.teacher-toast p {
  margin-block-start: .18rem;
  color: var(--muted);
  font-size: .76rem;
}

.teacher-toast-close {
  flex: 0 0 auto;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: .7rem;
  cursor: pointer;
}

.notification-center-page { min-inline-size: 0; }
.notification-read-form { display: flex; justify-content: flex-end; margin-block-end: .75rem; }
.notification-history { display: grid; gap: .55rem; }
.notification-entry { min-inline-size: 0; padding: .82rem .9rem; display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: .75rem; border: 1px solid var(--border); border-radius: 13px; background: var(--surface); }
.notification-entry.is-unread { border-inline-start: 3px solid var(--primary); background: color-mix(in srgb, var(--primary-softer) 45%, var(--surface)); }
.notification-entry-running { border-color: color-mix(in srgb, var(--primary) 28%, var(--border)); }
.notification-entry-main { min-inline-size: 0; display: flex; align-items: flex-start; gap: .65rem; }
.notification-entry-main > div { min-inline-size: 0; }
.notification-entry strong { display: block; }
.notification-entry p, .notification-file { margin: .15rem 0 0; overflow-wrap: anywhere; color: var(--muted); font-size: .82rem; unicode-bidi: plaintext; }
.bidi-filename, .bidi-filename-suffix { unicode-bidi: isolate; }
.notification-detail { display: block; color: var(--muted); font-size: .78rem; }
.notification-meta { margin-block-start: .35rem; display: flex; flex-wrap: wrap; align-items: center; gap: .45rem; color: var(--muted); font-size: .72rem; }
.notification-status-mark { flex: 0 0 9px; inline-size: 9px; block-size: 9px; margin-block-start: .4rem; border-radius: 50%; background: var(--muted-2); }
.notification-status-mark.status-completed { background: var(--success); }
.notification-status-mark.status-failed { background: var(--danger); }
.notification-status-mark.status-needs_review { background: var(--warning); }
.notification-progress { margin-inline-start: auto; color: var(--primary-strong); font-weight: 800; unicode-bidi: isolate; }
.notification-action { white-space: nowrap; color: var(--primary-strong); font-size: .78rem; font-weight: 750; }
.notification-empty { padding: 2rem; text-align: center; border: 1px dashed var(--border); border-radius: 13px; }

@media (max-width: 820px) {
  .teacher-notifications { inset-block-end: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px) + .65rem); }
  .notification-entry { grid-template-columns: 1fr; }
  .notification-action { justify-self: start; }
}

.student-support-page {
  display: grid;
  gap: .75rem;
  min-inline-size: 0;
}

.support-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .45rem;
}

.support-summary-item {
  display: grid;
  gap: .1rem;
  padding: .68rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.support-summary-item strong {
  font-size: 1.15rem;
  font-variant-numeric: tabular-nums;
}

.support-summary-item span {
  color: var(--muted);
  font-size: .7rem;
}

.support-filter-card {
  padding: .72rem;
}

.support-filters {
  display: grid;
  gap: .62rem;
}

.support-filters > div {
  min-inline-size: 0;
}

.support-filter-actions {
  display: flex;
  align-items: end;
  gap: .4rem;
}

.support-table-wrap {
  display: none;
}

.support-mobile-list {
  display: grid;
  gap: .58rem;
}

.support-event-card {
  display: grid;
  gap: .55rem;
  padding: .78rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow-xs);
}

.support-card-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .4rem;
}

.support-card-head time {
  margin-inline-start: auto;
  color: var(--muted);
  font-size: .66rem;
}

.support-card-student {
  font-weight: 750;
}

.support-student-link {
  color: var(--primary);
  text-decoration: none;
}

.support-card-details {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .4rem;
  margin: 0;
}

.support-card-details > div {
  display: grid;
  gap: .08rem;
  min-inline-size: 0;
}

.support-card-details dt {
  color: var(--muted);
  font-size: .64rem;
}

.support-card-details dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: .76rem;
}

.support-reason {
  margin: 0;
  color: var(--foreground);
  font-size: .76rem;
}

.support-outcome-success {
  color: var(--success-foreground, #146c43);
  background: var(--success-soft, #e8f6ee);
}

.support-outcome-rejected,
.support-outcome-rate_limited {
  color: var(--danger, #9f2d3c);
  background: color-mix(in srgb, var(--danger, #9f2d3c) 9%, var(--surface));
}

.support-empty {
  display: grid;
  place-items: center;
  gap: .35rem;
  padding: 2rem 1rem;
  border: 1px dashed var(--border);
  border-radius: 12px;
  color: var(--muted);
  text-align: center;
}

.support-empty h2,
.support-empty p {
  margin: 0;
}

.registry-table {
  min-width: 880px;
}

.registry-col-student {
  width: 22%;
}

.registry-col-phone {
  width: 8.6rem;
}

.registry-table-phone {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.registry-mobile-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .42rem .7rem;
}

.registry-mobile-meta > div {
  display: grid;
  gap: .08rem;
  min-inline-size: 0;
}

.registry-mobile-label {
  color: var(--muted-2);
  font-size: .62rem;
}

/*
 * A 768px tablet keeps the semantic registry table, but every column must
 * fit the viewport.  The mobile card representation remains reserved for
 * genuinely narrow screens.
 */
@media (min-width: 681px) and (max-width: 900px) {
  .registry-bulk-form,
  .registry-table-wrap {
    min-inline-size: 0;
    max-inline-size: 100%;
  }

  .registry-table {
    min-inline-size: 0;
  }

  .registry-table :is(th, td) {
    padding-inline: .35rem;
  }

  .registry-table td {
    font-size: .72rem;
  }

  .registry-col-select {
    width: 2.2rem;
  }

  .registry-col-code {
    width: 4.6rem;
  }

  .registry-col-student {
    width: 20%;
  }

  .registry-col-phone {
    width: 6rem;
  }

  .registry-col-grade {
    width: 19%;
  }

  .registry-col-governorate {
    width: 12%;
  }

  .registry-col-status {
    width: 4.2rem;
  }

  .registry-col-actions {
    width: 4.5rem;
  }

  .registry-edit-link {
    min-inline-size: 0;
    padding-inline: .45rem;
  }
}

@media (min-width: 700px) {
  .teacher-notifications {
    inset-inline-start: auto;
    inline-size: 25rem;
  }

  .support-summary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .support-filters {
    grid-template-columns: minmax(12rem, 1.5fr) repeat(3, minmax(8rem, 1fr)) auto;
    align-items: end;
  }

  .support-table-wrap {
    display: block;
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
  }

  .support-mobile-list {
    display: none;
  }

  .support-table {
    inline-size: 100%;
    min-inline-size: 880px;
    border-collapse: collapse;
  }

  .support-table th,
  .support-table td {
    padding: .68rem;
    border-block-end: 1px solid var(--border);
    text-align: start;
    vertical-align: top;
    font-size: .73rem;
  }

  .support-table th {
    background: var(--surface-soft);
    color: var(--muted);
    white-space: nowrap;
  }

  .support-event-row:last-child td {
    border-block-end: 0;
  }
}

@media (min-width: 700px) and (max-width: 900px) {
  .student-support-page,
  #student-support-feed,
  .support-table-wrap {
    min-inline-size: 0;
    max-inline-size: 100%;
  }

  .support-table {
    min-inline-size: 0;
    table-layout: fixed;
  }

  .support-table th,
  .support-table td {
    padding: .45rem .35rem;
    overflow-wrap: anywhere;
    font-size: .67rem;
  }
}

/* Shared focused-action dialog. */
body.has-open-dialog {
  overflow: hidden;
}

.app-modal {
  inline-size: min(34rem, calc(100% - 1.5rem));
  max-inline-size: none;
  max-block-size: calc(100dvh - 1.5rem);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: .8rem;
  background: var(--surface);
  color: var(--foreground);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.app-modal--sm {
  inline-size: min(26rem, calc(100% - 1.5rem));
}

.app-modal--lg {
  inline-size: min(50rem, calc(100% - 1.5rem));
}

.app-modal::backdrop {
  background: color-mix(in srgb, var(--foreground) 32%, transparent);
}

.app-modal__surface {
  max-block-size: calc(100dvh - 1.5rem);
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
}

.app-modal__header,
.app-modal__footer {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem;
}

.app-modal__header {
  justify-content: space-between;
  border-block-end: 1px solid var(--border);
}

.app-modal__title {
  margin: 0;
  font-size: 1rem;
  line-height: 1.5;
}

.app-modal__close {
  min-inline-size: 0;
}

.app-modal__body {
  min-block-size: 0;
  padding: .75rem;
  overflow: auto;
  overscroll-behavior: contain;
}

.app-modal__footer {
  justify-content: flex-end;
  border-block-start: 1px solid var(--border);
}

.app-modal__footer > .btn {
  min-inline-size: 6rem;
}

.app-confirm-copy {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

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

.app-confirm-actions > .btn {
  inline-size: 100%;
}

@media (max-width: 620px) {
  .app-modal,
  .app-modal--sm,
  .app-modal--lg {
    position: fixed;
    inset: auto .5rem .5rem .5rem;
    inline-size: auto;
    max-block-size: calc(100dvh - 1rem);
    margin: 0;
    border-radius: .75rem;
  }

  .app-modal__surface {
    max-block-size: calc(100dvh - 1rem);
  }

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

/* Final cascade guards for shared action hierarchy. */
@media (max-width: 900px) {
  .student-operations-bar {
    display: flex;
    flex-wrap: wrap;
    gap: .4rem;
  }

  .student-operations-bar .btn,
  .student-operations-bar .btn-primary {
    inline-size: auto;
    flex: 0 1 auto;
    grid-column: auto;
  }

  .result-overview-card > .card-context-action,
  .review-form .btn {
    inline-size: auto;
    align-self: flex-start;
  }
}