/* ============================================================
   EdTech Hub — Özel Stil Dosyası
   Bootstrap 5 üzerine inşa edilmiştir.
   Palette: Slate Dark (#0F172A) + Electric Indigo (#6366F1)
   Font: Inter (Google Fonts)
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Değişkenleri (Light Theme) ───────────────────────── */
:root {
  --color-bg:           #F8FAFC;
  --color-surface:      #FFFFFF;
  --color-surface-2:    #F1F5F9;
  --color-border:       #E2E8F0;
  --color-primary:      #4F46E5;
  --color-primary-dark: #4338CA;
  --color-primary-glow: rgba(79, 70, 229, 0.15);
  --color-accent:       #6366F1;
  --color-success:      #10B981;
  --color-warning:      #F59E0B;
  --color-danger:       #EF4444;
  --color-info:         #0EA5E9;
  --color-text:         #0F172A;
  --color-text-muted:   #475569;
  --color-text-dim:     #64748B;

  --sidebar-width:      260px;
  --topbar-height:      64px;
  --border-radius:      12px;
  --border-radius-sm:   8px;
  --transition:         0.2s ease;
  --shadow-card:        0 4px 12px rgba(0,0,0,0.05);
  --shadow-glow:        0 0 15px var(--color-primary-glow);
}

/* ── Reset & Base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.9rem;
  background-color: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-surface); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

/* ─────────────────────────────────────────────────────────── */
/* AUTH LAYOUT                                                  */
/* ─────────────────────────────────────────────────────────── */
.auth-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(99,102,241,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(129,140,248,0.10) 0%, transparent 50%),
    var(--color-bg);
  padding: 2rem;
}

.auth-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-card);
  animation: fadeInUp 0.5s ease;
}

.auth-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  justify-content: center;
}

.auth-logo .logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: var(--shadow-glow);
}

.auth-logo .logo-text {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.auth-subtitle {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-bottom: 1.75rem;
}

/* ─────────────────────────────────────────────────────────── */
/* MAIN LAYOUT — SIDEBAR + CONTENT                             */
/* ─────────────────────────────────────────────────────────── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────── */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: var(--topbar-height);
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  box-shadow: var(--shadow-glow);
}

.sidebar-logo-text {
  font-size: 1.05rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-section {
  padding: 1rem 0;
}

.sidebar-section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  padding: 0 1.5rem 0.5rem;
}

.sidebar-nav {
  list-style: none;
  padding: 0;
}

.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1.5rem;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0;
  transition: background var(--transition), color var(--transition);
  position: relative;
}

.sidebar-nav li a:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.sidebar-nav li a.active {
  background: var(--color-primary-glow);
  color: var(--color-accent);
  font-weight: 600;
}

.sidebar-nav li a.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--color-primary);
  border-radius: 0 2px 2px 0;
}

.sidebar-nav li a .nav-icon {
  font-size: 1rem;
  width: 20px;
  text-align: center;
  flex-shrink: 0;
}

.sidebar-nav li a .nav-badge {
  margin-left: auto;
  font-size: 0.7rem;
  background: var(--color-primary);
  color: #fff;
  padding: 0.1rem 0.45rem;
  border-radius: 9999px;
  font-weight: 600;
}

.sidebar-footer {
  margin-top: auto;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--color-border);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  color: #fff;
  flex-shrink: 0;
}

.sidebar-user-info { min-width: 0; }
.sidebar-user-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-user-role {
  font-size: 0.72rem;
  color: var(--color-text-dim);
}

/* ── Topbar ───────────────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  gap: 1rem;
  z-index: 999;
}

.topbar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  flex: 1;
}

.topbar-breadcrumb {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.topbar-breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

.topbar-breadcrumb a:hover { text-decoration: underline; }

/* hamburger */
.sidebar-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 0.25rem;
}

/* ── Main Content ─────────────────────────────────────────── */
.main-content {
  margin-left: var(--sidebar-width);
  padding-top: var(--topbar-height);
  min-height: 100vh;
  flex: 1;
}

.page-content {
  padding: 1.75rem;
}

/* ─────────────────────────────────────────────────────────── */
/* KART BİLEŞENİ                                               */
/* ─────────────────────────────────────────────────────────── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-card);
}

.card-header {
  background: transparent;
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 0;
}

.card-body { padding: 1.25rem; }

/* ─────────────────────────────────────────────────────────── */
/* STAT KARTLARI (Dashboard)                                    */
/* ─────────────────────────────────────────────────────────── */
.stat-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.stat-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary-glow);
}

.stat-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.stat-card-icon.indigo  { background: rgba(99,102,241,0.15); color: var(--color-accent); }
.stat-card-icon.green   { background: rgba(34,197,94,0.15);  color: var(--color-success); }
.stat-card-icon.amber   { background: rgba(245,158,11,0.15); color: var(--color-warning); }
.stat-card-icon.sky     { background: rgba(56,189,248,0.15); color: var(--color-info); }
.stat-card-icon.rose    { background: rgba(239,68,68,0.15);  color: var(--color-danger); }

.stat-card-value {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1;
}

.stat-card-label {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
  font-weight: 500;
}

/* ─────────────────────────────────────────────────────────── */
/* TABLO                                                        */
/* ─────────────────────────────────────────────────────────── */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius-sm);
}

.table {
  color: var(--color-text);
  margin: 0;
  border-collapse: collapse;
  width: 100%;
}

.table th {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
  font-size: 0.875rem;
}

.table tbody tr { transition: background var(--transition); }
.table tbody tr:hover { background: var(--color-surface-2); }
.table tbody tr:last-child td { border-bottom: none; }

/* ─────────────────────────────────────────────────────────── */
/* FORMLAR                                                      */
/* ─────────────────────────────────────────────────────────── */
.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
  display: block;
}

.form-control,
.form-select {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  color: var(--color-text);
  padding: 0.55rem 0.875rem;
  font-size: 0.875rem;
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-glow);
  background: var(--color-surface-2);
  color: var(--color-text);
  outline: none;
}

.form-control::placeholder { color: var(--color-text-dim); }

.form-select option {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.form-text {
  font-size: 0.78rem;
  color: var(--color-text-dim);
  margin-top: 0.25rem;
}

.invalid-feedback {
  font-size: 0.78rem;
  color: var(--color-danger);
  display: block;
  margin-top: 0.25rem;
}

/* ─────────────────────────────────────────────────────────── */
/* BUTONLAR                                                     */
/* ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
  font-family: inherit;
}

.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-glow);
  color: #fff;
}

.btn-secondary {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  border-color: var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-border);
  color: var(--color-text);
}

.btn-success {
  background: rgba(34,197,94,0.15);
  color: var(--color-success);
  border-color: rgba(34,197,94,0.3);
}
.btn-success:hover {
  background: var(--color-success);
  color: #fff;
}

.btn-danger {
  background: rgba(239,68,68,0.1);
  color: var(--color-danger);
  border-color: rgba(239,68,68,0.25);
}
.btn-danger:hover {
  background: var(--color-danger);
  color: #fff;
}

.btn-warning {
  background: rgba(245,158,11,0.1);
  color: var(--color-warning);
  border-color: rgba(245,158,11,0.25);
}
.btn-warning:hover {
  background: var(--color-warning);
  color: #fff;
}

.btn-sm { padding: 0.3rem 0.65rem; font-size: 0.78rem; }
.btn-lg { padding: 0.7rem 1.5rem; font-size: 0.95rem; }

/* ─────────────────────────────────────────────────────────── */
/* BADGE / PILLS                                                */
/* ─────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 9999px;
}

.badge-primary  { background: rgba(99,102,241,0.15); color: var(--color-accent); }
.badge-success  { background: rgba(34,197,94,0.15);  color: var(--color-success); }
.badge-warning  { background: rgba(245,158,11,0.15); color: var(--color-warning); }
.badge-danger   { background: rgba(239,68,68,0.15);  color: var(--color-danger); }
.badge-info     { background: rgba(56,189,248,0.15); color: var(--color-info); }
.badge-muted    { background: var(--color-surface-2); color: var(--color-text-muted); }

/* ─────────────────────────────────────────────────────────── */
/* KONU MATRİSİ                                                 */
/* ─────────────────────────────────────────────────────────── */
.matrix-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--color-border);
}

.matrix-table {
  border-collapse: collapse;
  min-width: 100%;
  font-size: 0.8rem;
}

.matrix-table th,
.matrix-table td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  white-space: nowrap;
}

.matrix-table thead th {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  font-weight: 600;
  text-align: center;
}

.matrix-table thead th:first-child {
  text-align: left;
  position: sticky;
  left: 0;
  z-index: 2;
  background: var(--color-surface-2);
}

.matrix-table tbody td:first-child {
  position: sticky;
  left: 0;
  background: var(--color-surface);
  z-index: 1;
  font-weight: 500;
}

.matrix-cell {
  text-align: center;
  cursor: default;
}

.matrix-cell.clickable { cursor: pointer; }

.matrix-cell.completed {
  background: rgba(34,197,94,0.12);
}

.matrix-cell.pending {
  background: transparent;
}

.matrix-cell .topic-check {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-border);
  transition: all var(--transition);
  cursor: pointer;
  background: var(--color-surface-2);
  font-size: 0.85rem;
}

.matrix-cell .topic-check.done {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
  box-shadow: 0 0 8px rgba(34,197,94,0.4);
}

.matrix-cell .topic-check:hover:not(.done) {
  border-color: var(--color-primary);
  background: var(--color-primary-glow);
}

/* ─────────────────────────────────────────────────────────── */
/* İLERLEME BARI                                               */
/* ─────────────────────────────────────────────────────────── */
.progress-bar-wrapper {
  background: var(--color-surface-2);
  border-radius: 9999px;
  height: 8px;
  overflow: hidden;
  flex: 1;
}

.progress-bar-fill {
  height: 100%;
  border-radius: 9999px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width 0.5s ease;
}

.progress-bar-fill.success { background: linear-gradient(90deg, #22C55E, #4ADE80); }
.progress-bar-fill.warning { background: linear-gradient(90deg, #F59E0B, #FCD34D); }
.progress-bar-fill.danger  { background: linear-gradient(90deg, #EF4444, #F87171); }

/* ─────────────────────────────────────────────────────────── */
/* TOAST BİLDİRİMLER                                           */
/* ─────────────────────────────────────────────────────────── */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  padding: 0.85rem 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-card);
  animation: toastIn 0.3s ease;
  min-width: 280px;
  max-width: 380px;
}

.toast.success { border-left: 3px solid var(--color-success); }
.toast.error   { border-left: 3px solid var(--color-danger); }
.toast.warning { border-left: 3px solid var(--color-warning); }
.toast.info    { border-left: 3px solid var(--color-info); }

.toast-icon { font-size: 1.1rem; flex-shrink: 0; }
.toast.success .toast-icon { color: var(--color-success); }
.toast.error   .toast-icon { color: var(--color-danger); }
.toast.warning .toast-icon { color: var(--color-warning); }
.toast.info    .toast-icon { color: var(--color-info); }

/* ─────────────────────────────────────────────────────────── */
/* SAYFA BAŞLIĞI                                               */
/* ─────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-header-title {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-text);
  margin: 0;
}

.page-header-subtitle {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-top: 0.15rem;
}

/* ─────────────────────────────────────────────────────────── */
/* DRAG-AND-DROP SIRA (Konu Listesi)                           */
/* ─────────────────────────────────────────────────────────── */
.sortable-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  margin-bottom: 0.4rem;
  cursor: grab;
  transition: background var(--transition), box-shadow var(--transition);
  user-select: none;
}

.sortable-item:active { cursor: grabbing; }
.sortable-item.dragging {
  background: var(--color-primary-glow);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  opacity: 0.85;
}

.drag-handle {
  color: var(--color-text-dim);
  font-size: 1rem;
  flex-shrink: 0;
}

/* ─────────────────────────────────────────────────────────── */
/* RESPONSIVE                                                   */
/* ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .sidebar-toggle { display: flex; }

  .main-content {
    margin-left: 0;
  }

  .topbar {
    left: 0;
  }

  .page-content { padding: 1rem; }

  .stat-card-value { font-size: 1.4rem; }
}

/* ─────────────────────────────────────────────────────────── */
/* ANİMASYONLAR                                                */
/* ─────────────────────────────────────────────────────────── */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(16px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.animate-fadein { animation: fadeIn 0.4s ease; }
.animate-fadeup { animation: fadeInUp 0.4s ease; }

/* ─────────────────────────────────────────────────────────── */
/* YARDIMCI SINIFLAR                                           */
/* ─────────────────────────────────────────────────────────── */
.text-primary { color: var(--color-primary) !important; }
.text-accent  { color: var(--color-accent) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning) !important; }
.text-danger  { color: var(--color-danger) !important; }
.text-muted   { color: var(--color-text-muted) !important; }
.text-dim     { color: var(--color-text-dim) !important; }

.bg-surface   { background: var(--color-surface); }
.bg-surface-2 { background: var(--color-surface-2); }

.border-color { border-color: var(--color-border) !important; }

.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }

.divider {
  height: 1px;
  background: var(--color-border);
  margin: 0.75rem 0;
}

/* ─────────────────────────────────────────────────────────── */
/* BOŞ DURUM                                                   */
/* ─────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.3;
}

.empty-state-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 0.5rem;
}

.empty-state-desc {
  font-size: 0.82rem;
  color: var(--color-text-dim);
}

/* ─────────────────────────────────────────────────────────── */
/* MODAL                                                        */
/* ─────────────────────────────────────────────────────────── */
.modal-content {
  background: var(--color-surface) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--border-radius) !important;
  color: var(--color-text);
}

.modal-header {
  border-bottom: 1px solid var(--color-border) !important;
  padding: 1rem 1.25rem;
}

.modal-footer {
  border-top: 1px solid var(--color-border) !important;
}

.modal-title { font-weight: 700 !important; }

.btn-close {
  filter: invert(1);
}

/* ─────────────────────────────────────────────────────────── */
/* ALERT                                                        */
/* ─────────────────────────────────────────────────────────── */
.alert {
  border-radius: var(--border-radius-sm);
  border: 1px solid;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.alert-success {
  background: rgba(34,197,94,0.08);
  border-color: rgba(34,197,94,0.25);
  color: var(--color-success);
}

.alert-danger {
  background: rgba(239,68,68,0.08);
  border-color: rgba(239,68,68,0.25);
  color: var(--color-danger);
}

.alert-warning {
  background: rgba(245,158,11,0.08);
  border-color: rgba(245,158,11,0.25);
  color: var(--color-warning);
}

.alert-info {
  background: rgba(56,189,248,0.08);
  border-color: rgba(56,189,248,0.25);
  color: var(--color-info);
}

/* ── Topic Checkbox ───────────────────────────────────────── */
.topic-check {
  width: 28px;
  height: 28px;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  color: transparent;
  font-size: 1.1rem;
  font-weight: bold;
}
.topic-check:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-2);
}
.topic-check.done {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}
.topic-check.done:hover {
  background: #15803d; /* hover for success */
  border-color: #15803d;
}

/* ── Matrix Checkbox ──────────────────────────────────────── */
.matrix-check {
  width: 44px;
  height: 44px;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  color: transparent;
  font-size: 1.4rem;
  font-weight: bold;
}
.matrix-check:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-2);
}
.matrix-check.done {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}
.matrix-check.done:hover {
  background: #15803d;
  border-color: #15803d;
}