/* ============================================================
   Atlas — responsyvus stilius
   Mobile-first, palaiko:
   - Telefoną (≥ 320px)
   - Planšetę (≥ 768px)
   - Desktop (≥ 1024px)
   - Interaktyvią lentą klasėje (≥ 1600px, touch)
   ============================================================ */

:root {
    --atlas-primary:     #0d6efd;
    --atlas-primary-dim: #e7f1ff;
    --atlas-bg:          #f5f7fa;
    --atlas-card-bg:     #ffffff;
    --atlas-border:      #dee2e6;
    --atlas-touch-min:   44px; /* WCAG minimum tap target */
}

[data-bs-theme="dark"] {
    --atlas-primary-dim: #1a2a44;
    --atlas-bg:          #1a1d20;
    --atlas-card-bg:     #212529;
    --atlas-border:      #373b3f;
}

[data-bs-theme="dark"] body { background-color: var(--atlas-bg); color: #dee2e6; }
[data-bs-theme="dark"] .bg-light { background-color: #2b3035 !important; color: #dee2e6; }
[data-bs-theme="dark"] .bg-white { background-color: var(--atlas-card-bg) !important; }
[data-bs-theme="dark"] .card { background-color: var(--atlas-card-bg); color: #dee2e6; }
[data-bs-theme="dark"] .card-header.bg-transparent { color: #dee2e6; }
[data-bs-theme="dark"] .text-muted, [data-bs-theme="dark"] .text-secondary { color: #adb5bd !important; }
[data-bs-theme="dark"] .text-dark { color: #dee2e6 !important; }
[data-bs-theme="dark"] .list-group-item { background-color: var(--atlas-card-bg); color: #dee2e6; border-color: var(--atlas-border); }
[data-bs-theme="dark"] .schedule-mobile-day { background: var(--atlas-card-bg); color: #dee2e6; }
[data-bs-theme="dark"] .lesson-cell { background: var(--atlas-primary-dim); color: #dee2e6; }
[data-bs-theme="dark"] .table { color: #dee2e6; }
[data-bs-theme="dark"] .btn-outline-light { color: #dee2e6; border-color: #495057; }
[data-bs-theme="dark"] footer { background-color: #212529 !important; color: #adb5bd; }
[data-bs-theme="dark"] footer.bg-light { background-color: #212529 !important; }
[data-bs-theme="dark"] .chat-panel { background: var(--atlas-card-bg) !important; color: #dee2e6; }
[data-bs-theme="dark"] .alert-light { background-color: #2b3035; color: #dee2e6; border-color: var(--atlas-border); }
[data-bs-theme="dark"] #search-results-top, [data-bs-theme="dark"] #search-results { background: var(--atlas-card-bg) !important; color: #dee2e6; }
[data-bs-theme="dark"] .dropdown-menu { background-color: var(--atlas-card-bg); }
[data-bs-theme="dark"] .dropdown-item { color: #dee2e6; }
[data-bs-theme="dark"] .dropdown-item:hover { background-color: #2b3035; color: white; }
[data-bs-theme="dark"] .card:hover { box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5) !important; }

/* ============================================================
   Desktop: navbar → kairė sidebar
   Mobile/planšetė: viršutinė juosta su hamburger
   ============================================================ */
@media (min-width: 992px) {
  body.has-sidebar { padding-left: 240px !important; }

  .sidebar-nav {
    position: fixed !important;
    top: 0 !important; left: 0 !important; bottom: 0 !important;
    width: 240px !important;
    min-height: 100vh;
    padding: 1rem 0.5rem !important;
    overflow-y: auto;
    z-index: 1030;
    display: block !important;
  }
  .sidebar-nav > .container-fluid {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.4rem;
    padding: 0 !important;
    max-width: 100% !important;
  }
  .sidebar-nav .navbar-brand {
    margin: 0 0 .5rem 0 !important;
    text-align: center;
  }
  .sidebar-nav form {
    max-width: 100% !important;
    margin: 0 !important;
    flex: none !important;
  }
  .sidebar-nav .navbar-toggler { display: none !important; }
  .sidebar-nav .collapse,
  .sidebar-nav .navbar-collapse {
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    width: 100% !important;
  }
  .sidebar-nav ul.navbar-nav {
    flex-direction: column !important;
    width: 100% !important;
    margin: 0 !important;
  }
  .sidebar-nav .navbar-nav .nav-link {
    padding: 0.5rem 0.75rem !important;
    border-radius: 6px;
    margin-bottom: 2px;
    display: block !important;
  }
  .sidebar-nav .navbar-nav .nav-link:hover { background: rgba(255,255,255,0.1); }
  .sidebar-nav .dropdown-menu {
    position: static !important;
    border: 0 !important;
    padding-left: 1rem !important;
    background: rgba(0,0,0,0.25) !important;
    width: 100% !important;
    max-width: 100% !important;
    float: none !important;
    transform: none !important;
    margin: 0 !important;
  }
  .sidebar-nav .dropdown-menu .dropdown-item {
    color: rgba(255,255,255,0.85) !important;
    padding: 0.35rem 0.75rem !important;
    font-size: 0.9rem;
    white-space: normal;
  }
  .sidebar-nav .dropdown-menu .dropdown-item:hover {
    background: rgba(255,255,255,0.15) !important;
    color: white !important;
  }
  .sidebar-nav .d-flex.me-auto {
    justify-content: center !important;
    margin: .25rem 0 !important;
  }
  .sidebar-nav ul.navbar-nav:last-of-type {
    margin-top: auto !important;
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: .5rem;
  }
  .sidebar-nav .dropdown-toggle::after { float: right; margin-top: .5em; }
  .sidebar-nav #search-results-top { color: #212529 !important; }
}

* { -webkit-tap-highlight-color: rgba(13, 110, 253, 0.15); }

html { -webkit-text-size-adjust: 100%; }

body {
    background-color: var(--atlas-bg);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Touch-friendly mygtukai */
.btn, .form-control, .form-select {
    min-height: var(--atlas-touch-min);
}

.btn-sm {
    min-height: 36px;
    padding: 0.375rem 0.75rem;
}

.btn-xs {
    min-height: 28px;
    padding: 0.2rem 0.5rem;
    font-size: 0.75rem;
}

/* Didelių ekranų sąsaja (interaktyvi lenta klasėje) */
@media (min-width: 1600px) {
    body { font-size: 18px; }
    .btn { min-height: 56px; font-size: 1.05rem; }
    .btn-sm { min-height: 44px; }
    .navbar-brand { font-size: 1.6rem; }
    .card { border-radius: 12px; }
    h3 { font-size: 2rem; }
}

/* Desktop */
@media (min-width: 1024px) {
    body { font-size: 16px; }
}

/* Navigacija */
.navbar {
    padding: 0.6rem 1rem;
}
.navbar-brand {
    font-size: 1.4rem;
    font-weight: 700;
}

/* Kortelės */
.card {
    transition: box-shadow 0.2s ease;
    border-radius: 10px;
}
.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08) !important;
}

/* Lentelės mobile (stack rows) */
@media (max-width: 575.98px) {
    .table-responsive {
        font-size: 0.875rem;
    }
    .table th, .table td {
        padding: 0.5rem 0.4rem;
    }
}

/* ============================================================
   Tvarkaraščio grid'as — responsyvus
   ============================================================ */

.schedule-grid {
    font-size: 0.875rem;
    margin-bottom: 0;
}

.schedule-grid td {
    padding: 4px !important;
    vertical-align: top;
    min-width: 110px;
}

.schedule-grid th {
    font-size: 0.85rem;
}

.lesson-cell {
    padding: 0.5rem;
    background: var(--atlas-primary-dim);
    border-left: 3px solid var(--atlas-primary);
    border-radius: 4px;
    margin-bottom: 4px;
    font-size: 0.85rem;
    line-height: 1.2;
}

/* Mobile — rodom tik dieną pagal select'ą */
@media (max-width: 767.98px) {
    .schedule-desktop { display: none !important; }
    .schedule-mobile { display: block !important; }
}

@media (min-width: 768px) {
    .schedule-desktop { display: block; }
    .schedule-mobile { display: none; }
}

.schedule-mobile-day {
    border-left: 4px solid var(--atlas-primary);
    padding: 0.75rem 1rem;
    margin-bottom: 0.75rem;
    background: white;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

/* ============================================================
   Lankomumo žymėjimas — touch-friendly
   ============================================================ */

.attendance-student {
    padding: 0.75rem;
    border-bottom: 1px solid var(--atlas-border);
}

.attendance-status-group {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.attendance-status-group .btn {
    flex: 1 1 auto;
    min-width: 80px;
    min-height: var(--atlas-touch-min);
}

@media (max-width: 575.98px) {
    .attendance-status-group .btn {
        min-width: calc(50% - 0.35rem);
        font-size: 0.875rem;
    }
}

/* Dideli ekranai (interaktyvi lenta) — dar didesni mygtukai */
@media (min-width: 1600px) {
    .attendance-status-group .btn {
        min-height: 64px;
        min-width: 140px;
        font-size: 1.1rem;
    }
}

/* ============================================================
   Formos — mobile friendly
   ============================================================ */

.form-label { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.3rem; }
.form-label.small { font-size: 0.8rem; }

/* Modals — fullscreen mobile */
@media (max-width: 575.98px) {
    .modal-dialog:not(.modal-fullscreen) {
        margin: 0;
        min-height: 100vh;
    }
    .modal-content {
        border-radius: 0;
        min-height: 100vh;
    }
}

/* ============================================================
   Kortelės sąrašas (grid cards) — auto responsive
   ============================================================ */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

/* ============================================================
   Footer
   ============================================================ */

footer {
    font-size: 0.85rem;
    padding: 1rem 0;
}

/* ============================================================
   Spausdinimas (pagal mokyklos ataskaitų generavimą)
   ============================================================ */

@media print {
    .navbar, footer, .no-print { display: none !important; }
    body { background: white; font-size: 11pt; }
    .card { break-inside: avoid; border: 1px solid #ccc !important; }
}