/* ========================================================================== */
/* واجهة ذكيّ للجوال — طبقة مستقلة لا تغيّر تصميم الديسكتوب                 */
/* ========================================================================== */
.mobile-bottom-nav,
.mobile-nav-backdrop,
.mobile-sidebar-close { display: none; }

@media (max-width: 720px) {
  :root {
    --mobile-nav-height: 72px;
    --mobile-gutter: 14px;
    --mobile-radius: 20px;
  }

  html { width: 100%; overflow-x: hidden; }
  body {
    width: 100%;
    max-width: 100%;
    overflow-x: clip;
    background-size: 100% 38px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
  }
  body.mobile-nav-open { overflow: hidden; }
  body.with-sidebar {
    padding-left: 0 !important;
    padding-bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
  }

  /* مساحة التطبيق */
  .wrap,
  .wrap.wrap-wide {
    width: 100% !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 14px var(--mobile-gutter) calc(34px + env(safe-area-inset-bottom)) !important;
  }

  header {
    position: sticky;
    top: 0;
    z-index: 300;
    min-height: 58px;
    margin: -14px calc(var(--mobile-gutter) * -1) 22px !important;
    padding: calc(10px + env(safe-area-inset-top)) 16px 10px;
    gap: 12px;
    border-bottom: 1px solid color-mix(in srgb, var(--line) 82%, transparent);
    background: color-mix(in srgb, var(--paper) 88%, transparent);
    box-shadow: 0 5px 18px rgba(27, 42, 74, .06);
    backdrop-filter: blur(18px) saturate(150%);
    -webkit-backdrop-filter: blur(18px) saturate(150%);
  }
  header .logo { font-size: 23px; flex: 0 0 auto; }
  header .badge {
    min-width: 0;
    max-width: min(66vw, 245px);
    padding: 6px 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 11.5px;
  }

  .hero { margin: 6px 2px 28px !important; text-align: start; }
  .hero h1 {
    margin-bottom: 12px;
    font-size: clamp(29px, 8.7vw, 38px) !important;
    line-height: 1.28 !important;
    letter-spacing: -.5px;
    overflow-wrap: anywhere;
  }
  .hero p { max-width: none; font-size: 15px !important; line-height: 1.8; }
  /* في الشاشات الداخلية نترك المساحة للمهمة نفسها بدل تكرار مقدمة الرئيسية. */
  body:has(.global-back-btn:not(.hidden)) .hero { display: none; }

  /* البطاقات والنماذج */
  .card {
    width: 100%;
    min-width: 0;
    margin-bottom: 16px !important;
    padding: 20px 16px !important;
    border-radius: var(--mobile-radius) !important;
    box-shadow: 0 10px 34px rgba(27, 42, 74, .07) !important;
    overflow: hidden;
  }
  .card h2 { font-size: 20px !important; line-height: 1.5; }
  .card h3 { line-height: 1.5; }
  .card .desc { font-size: 13.5px; line-height: 1.75; }
  .step-label { margin-bottom: 14px; }

  input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
  select,
  textarea,
  .text-input {
    max-width: 100%;
    min-height: 46px;
    font-size: 16px !important;
    border-radius: 12px !important;
  }
  textarea { line-height: 1.7; }
  button,
  [role="button"],
  a.button { touch-action: manipulation; }
  button.primary,
  button.ghost,
  .btn-primary,
  .btn-secondary {
    min-height: 46px;
    border-radius: 13px !important;
  }
  #mode-select .actions,
  #room-mode-select .actions,
  #login-form .actions,
  #signup-form .actions {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 10px !important;
  }
  #mode-select .actions > *,
  #room-mode-select .actions > * { width: 100%; }

  .data-table-wrap,
  .table-wrap {
    max-width: 100%;
    overflow-x: auto !important;
    border-radius: 14px;
    -webkit-overflow-scrolling: touch;
  }
  .data-table-wrap table,
  .table-wrap table { min-width: 650px; }
  .role-tabs,
  .admin-tabs,
  .settings-tabs {
    max-width: 100%;
    flex-wrap: nowrap !important;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .role-tabs::-webkit-scrollbar,
  .admin-tabs::-webkit-scrollbar,
  .settings-tabs::-webkit-scrollbar { display: none; }

  /* القائمة الكاملة تصير درجًا جانبيًا واضحًا بدل شريط أيقونات ضيق */
  .sidebar {
    display: flex;
    top: 0;
    right: 0;
    left: auto;
    bottom: 0;
    width: min(86vw, 330px) !important;
    padding: calc(15px + env(safe-area-inset-top)) 14px calc(18px + env(safe-area-inset-bottom)) !important;
    border-right: 0;
    border-left: 1px solid var(--line);
    z-index: 1300;
    transform: translateX(106%);
    visibility: hidden;
    opacity: 0;
    transition: transform .24s ease, opacity .2s ease, visibility .24s;
    box-shadow: -24px 0 50px rgba(17, 31, 55, .2);
    overscroll-behavior: contain;
  }
  [dir="ltr"] .sidebar {
    right: auto;
    left: 0;
    border-left: 0;
    border-right: 1px solid var(--line);
    transform: translateX(-106%);
    box-shadow: 24px 0 50px rgba(17, 31, 55, .2);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
    visibility: visible;
    opacity: 1;
  }
  .sidebar-mobile-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 46px;
    margin-bottom: 12px;
    padding: 0 6px;
  }
  .sidebar-logo {
    margin: 0 !important;
    font-size: 23px !important;
    text-align: start;
  }
  .sidebar-logo::first-letter { font-size: inherit !important; }
  .mobile-sidebar-close {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: var(--paper-dim);
    color: var(--ink);
    font: inherit;
    cursor: pointer;
  }
  .sidebar-nav { gap: 4px; }
  .sidebar-btn {
    justify-content: flex-start !important;
    min-height: 46px;
    padding: 10px 12px !important;
    border-radius: 13px;
    font-size: 14px;
    text-align: start;
  }
  .sidebar-btn .label { display: inline !important; }
  .sidebar-btn .sidebar-icon {
    width: 25px;
    font-size: 18px;
    text-align: center;
    flex: 0 0 25px;
  }
  .sidebar-bottom {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
  }
  .mobile-nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1250;
    background: rgba(13, 24, 43, .48);
    opacity: 0;
    visibility: hidden;
    transition: opacity .2s ease, visibility .2s;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
  }
  body.mobile-nav-open .mobile-nav-backdrop { opacity: 1; visibility: visible; }

  /* شريط تنقل سفلي شبيه بالتطبيقات الأصلية */
  body.with-sidebar .mobile-bottom-nav { display: grid; }
  .mobile-bottom-nav {
    position: fixed;
    right: 0;
    left: 0;
    bottom: 0;
    z-index: 1100;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    height: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom));
    padding: 7px 7px calc(7px + env(safe-area-inset-bottom));
    border-top: 1px solid color-mix(in srgb, var(--line) 88%, transparent);
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    box-shadow: 0 -10px 32px rgba(17, 31, 55, .12);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
  }
  .mobile-nav-btn {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-width: 0;
    padding: 3px 2px;
    border: 0;
    border-radius: 14px;
    background: transparent;
    color: var(--ink-soft);
    font-family: inherit;
    cursor: pointer;
  }
  .mobile-nav-btn small {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 10.5px;
    font-weight: 700;
    line-height: 1.35;
  }
  .mobile-nav-icon { font-size: 19px; line-height: 1.35; }
  .mobile-nav-btn.is-active { color: var(--teal); background: var(--teal-dim); }
  .mobile-nav-primary .mobile-nav-icon {
    display: grid;
    place-items: center;
    width: 34px;
    height: 30px;
    border-radius: 11px;
    background: var(--emphasis-bg);
    color: var(--emphasis-text);
    font-size: 17px;
    box-shadow: 0 5px 14px rgba(27, 42, 74, .2);
  }
  .mobile-nav-primary.is-active .mobile-nav-icon { background: var(--teal); }
  .mobile-nav-badge {
    position: absolute;
    top: 2px;
    inset-inline-start: calc(50% + 7px);
    display: grid;
    place-items: center;
    min-width: 17px;
    height: 17px;
    padding: 0 4px;
    border: 2px solid var(--surface);
    border-radius: 99px;
    background: var(--danger);
    color: #fff;
    font-size: 9px;
    font-weight: 800;
  }

  /* العناصر العائمة لا تغطي المحتوى أو شريط التنقل */
  .global-back-btn {
    top: calc(70px + env(safe-area-inset-top)) !important;
    left: 12px !important;
    width: 42px;
    height: 42px;
    padding: 0 !important;
    border-radius: 13px !important;
    font-size: 0 !important;
    z-index: 950;
  }
  .global-back-btn::before { content: "←"; font-size: 20px; }
  [dir="ltr"] .global-back-btn::before { content: "←"; }
  .pomodoro-widget {
    left: 12px !important;
    right: auto !important;
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 10px) !important;
    width: min(220px, calc(100vw - 24px)) !important;
  }
  .trial-nudge,
  .with-sidebar .trial-nudge {
    right: 12px !important;
    left: 12px !important;
    bottom: calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 10px) !important;
    width: auto !important;
    max-width: none !important;
  }
  .platform-footer { gap: 10px; padding-bottom: 4px; }
  .platform-social-links { gap: 7px; }
  .platform-social-links a { padding: 7px 10px; font-size: 12px; }
  .platform-cr-link {
    position: static !important;
    width: fit-content;
    max-width: 100%;
    min-height: 42px;
    margin: 0 auto;
    padding: 8px 12px;
    box-shadow: none;
  }
  /* سكربت التوثيق يضيف iframe عائمًا؛ ندمجه في نهاية الصفحة حتى لا يغطي التنقل. */
  .sbc-seal-frame {
    position: static !important;
    display: block !important;
    width: 121px !important;
    height: 44px !important;
    margin: 10px auto calc(var(--mobile-nav-height) + env(safe-area-inset-bottom) + 10px) !important;
  }

  /* المودالات تظهر كورقة سفلية مريحة على الجوال */
  .payment-modal-overlay,
  .login-required-modal,
  .handwriting-overlay,
  .qr-modal {
    align-items: flex-end !important;
    padding: 0 !important;
  }
  .payment-modal-box,
  .login-required-box,
  .handwriting-modal,
  .qr-modal-box {
    width: 100% !important;
    max-width: none !important;
    max-height: 91dvh !important;
    margin: 0 !important;
    padding: 24px 16px calc(20px + env(safe-area-inset-bottom)) !important;
    border-radius: 24px 24px 0 0 !important;
    overflow-y: auto;
  }
  .trial-card-row { grid-template-columns: 1fr !important; }

  /* تخطيطات المحتوى الثقيلة */
  .subscription-grid,
  .plans-grid,
  .stats-grid,
  .profile-stats,
  .school-documents-grid,
  .admin-metrics-grid,
  .admin-charts-grid,
  .madrasati-grid {
    grid-template-columns: 1fr !important;
  }
  .admin-analytics-hero,
  .school-documents-hero,
  .school-documents-toolbar,
  .school-document-upload-actions {
    align-items: stretch !important;
    flex-direction: column !important;
  }
  .school-documents-layout { grid-template-columns: 1fr !important; }
  .school-folders-panel { position: static !important; }
  .school-folders-list { display: flex; overflow-x: auto; padding-bottom: 5px; }
  .school-folder-row { min-width: 180px; }

  .sl-page,
  .rl-page { min-width: 0; overflow: hidden; }
  .sl-toolbar,
  .rl-toolbar {
    max-width: 100%;
    flex-wrap: nowrap !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .sl-scene-wrap,
  .rl-canvas-wrap { max-width: 100%; min-height: 300px; }
  .sl-bio-grid { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }

  .chat-layout,
  .messages-layout,
  .classroom-layout,
  .ai-conversation-layout { grid-template-columns: 1fr !important; }
}

@media (max-width: 380px) {
  :root { --mobile-gutter: 11px; }
  .card { padding: 18px 13px !important; }
  .mobile-nav-btn small { font-size: 9.5px; }
  .mobile-nav-icon { font-size: 18px; }
  header .badge { max-width: 58vw; }
  .sl-bio-grid { grid-template-columns: 1fr !important; }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar,
  .mobile-nav-backdrop { transition: none !important; }
}