/* ═══════════════════════════════════════════════════════════════
   CheMentor TMS v3.0 — Global Stylesheet
   ═══════════════════════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────────────────────── */
:root {
  --bg:          #f4f6fb;
  --bg2:         #eef0f7;
  --surface:     #ffffff;
  --surface2:    #f9fafc;
  --border:      #e2e6f0;
  --border-soft: #edf0f8;
  --t1:          #0d1117;
  --t2:          #374151;
  --t3:          #6b7280;
  --t4:          #9ca3af;

  /* Brand */
  --primary:     #6366f1;
  --primary-d:   #4f46e5;
  --primary-bg:  #eef0fd;
  --secondary:   #8b5cf6;
  --accent:      #06b6d4;

  /* Semantic */
  --success:     #22c55e;
  --success-bg:  #dcfce7;
  --warning:     #f59e0b;
  --warning-bg:  #fef9c3;
  --danger:      #ef4444;
  --danger-bg:   #fee2e2;
  --info:        #3b82f6;
  --info-bg:     #dbeafe;

  /* Gradients */
  --g-admin:     linear-gradient(135deg,#6366f1,#8b5cf6);
  --g-teacher:   linear-gradient(135deg,#0ea5e9,#06b6d4);
  --g-student:   linear-gradient(135deg,#22c55e,#16a34a);
  --g-warm:      linear-gradient(135deg,#f97316,#f43f5e);
  --g-gold:      linear-gradient(135deg,#f59e0b,#d97706);
  --g-purple:    linear-gradient(135deg,#8b5cf6,#7c3aed);

  /* Sidebar */
  --sidebar-w:   260px;
  --sidebar-bg:  #0f172a;
  --sidebar-t:   #cbd5e1;
  --sidebar-t2:  #64748b;
  --sidebar-act: rgba(99,102,241,.18);

  /* Misc */
  --radius:      14px;
  --radius-sm:   8px;
  --radius-lg:   20px;
  --shadow:      0 4px 24px rgba(0,0,0,.07);
  --shadow-md:   0 8px 32px rgba(0,0,0,.10);
  --shadow-lg:   0 16px 48px rgba(0,0,0,.15);
  --transition:  .2s cubic-bezier(.4,0,.2,1);
}

[data-theme="dark"] {
  --bg:          #0b0f1a;
  --bg2:         #111827;
  --surface:     #1a2035;
  --surface2:    #1f2845;
  --border:      #2d3a55;
  --border-soft: #243050;
  --t1:          #f1f5f9;
  --t2:          #cbd5e1;
  --t3:          #94a3b8;
  --t4:          #64748b;
  --primary-bg:  rgba(99,102,241,.15);
  --success-bg:  rgba(34,197,94,.12);
  --warning-bg:  rgba(245,158,11,.12);
  --danger-bg:   rgba(239,68,68,.12);
  --info-bg:     rgba(59,130,246,.12);
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; scroll-behavior: smooth; }
body {
  font-family: 'Plus Jakarta Sans', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--t1);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-d); }
img { max-width: 100%; }
button { cursor: pointer; font-family: inherit; }

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 10px; }

/* ═══════════════════════════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════════════════════════ */

/* Sidebar layout */
.app-layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  color: var(--sidebar-t);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 200;
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-header {
  padding: 20px 18px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex;
  align-items: center;
  gap: 12px;
}
.sidebar-logo {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: grid; place-items: center;
  font-size: 1.3rem;
  background: var(--g-admin);
  flex-shrink: 0;
}
.sidebar-logo.teacher-logo { background: var(--g-teacher); }
.sidebar-logo.student-logo { background: var(--g-student); }
.sidebar-brand { font-weight: 800; font-size: .95rem; color: #fff; }
.sidebar-brand-sub { font-size: .7rem; color: var(--sidebar-t2); }

.sidebar-nav { flex: 1; padding: 12px 10px; }
.nav-group-label {
  font-size: .65rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--sidebar-t2); padding: 12px 8px 4px; font-weight: 700;
}
.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 9px 12px; border-radius: 10px;
  color: var(--sidebar-t2); font-weight: 600; font-size: .85rem;
  transition: all var(--transition); margin-bottom: 2px;
  cursor: pointer;
}
.nav-item:hover { background: rgba(255,255,255,.07); color: #fff; }
.nav-item.active { background: var(--sidebar-act); color: #fff; }
.nav-item.active .nav-icon { color: var(--primary); }
.nav-item .nav-icon { width: 20px; text-align: center; font-size: .9rem; flex-shrink: 0; }
.nav-item .nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: #fff; font-size: .6rem; font-weight: 700;
  padding: 2px 6px; border-radius: 20px;
}

.sidebar-footer {
  padding: 14px 10px;
  border-top: 1px solid rgba(255,255,255,.06);
}
.sidebar-user {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 10px;
  cursor: pointer; transition: background var(--transition);
}
.sidebar-user:hover { background: rgba(255,255,255,.07); }
.sidebar-user img { width: 34px; height: 34px; border-radius: 50%; }
.sidebar-user-name { font-size: .82rem; font-weight: 700; color: #fff; }
.sidebar-user-role { font-size: .68rem; color: var(--sidebar-t2); }

/* Main content */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* Topbar */
.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  height: 62px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: sticky; top: 0; z-index: 100;
}
.topbar-title {
  font-weight: 800; font-size: 1.05rem;
  flex: 1;
}
.topbar-actions { display: flex; align-items: center; gap: 8px; }

/* Page body */
.page-body {
  padding: 24px;
  flex: 1;
}
.page-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 22px; flex-wrap: wrap; gap: 12px;
}
.page-header h1 {
  font-size: 1.35rem; font-weight: 900;
}
.page-header p { color: var(--t3); font-size: .85rem; margin-top: 2px; }

/* ═══════════════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════════════ */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.card-title {
  font-size: .92rem; font-weight: 800; display: flex; align-items: center; gap: 8px;
}
.card-body { padding: 20px; }
.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface2);
  display: flex; align-items: center; justify-content: space-between;
  font-size: .8rem; color: var(--t3);
}

/* ── Stats Grid ─────────────────────────────────────────────── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  display: flex; align-items: center; gap: 16px;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.stat-icon {
  width: 50px; height: 50px;
  border-radius: 14px;
  display: grid; place-items: center;
  font-size: 1.3rem; flex-shrink: 0;
}
.stat-icon.admin   { background: var(--primary-bg); color: var(--primary); }
.stat-icon.teacher { background: rgba(14,165,233,.12); color: #0ea5e9; }
.stat-icon.student { background: var(--success-bg); color: var(--success); }
.stat-icon.warning { background: var(--warning-bg); color: var(--warning); }
.stat-icon.danger  { background: var(--danger-bg);  color: var(--danger); }
.stat-icon.info    { background: var(--info-bg);    color: var(--info); }
.stat-value { font-size: 1.8rem; font-weight: 900; line-height: 1.1; }
.stat-label { color: var(--t3); font-size: .78rem; font-weight: 600; margin-top: 2px; }
.stat-sub   { font-size: .72rem; color: var(--t3); margin-top: 4px; }

/* ── Data Table ─────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
thead th {
  background: var(--surface2);
  padding: 11px 14px;
  text-align: left;
  font-weight: 700; font-size: .75rem; text-transform: uppercase;
  letter-spacing: .05em; color: var(--t3);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
tbody td {
  padding: 13px 14px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: middle;
  color: var(--t2);
}
tbody tr:hover td { background: var(--bg); }
tbody tr:last-child td { border-bottom: none; }

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius-sm);
  font-size: .85rem; font-weight: 700; border: none;
  transition: all var(--transition); white-space: nowrap; cursor: pointer;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-d); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(99,102,241,.4); }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #16a34a; transform: translateY(-1px); }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { background: #dc2626; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover { background: #d97706; }
.btn-info    { background: var(--info); color: #fff; }
.btn-ghost   { background: var(--bg2); color: var(--t2); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--border); }
.btn-sm { padding: 6px 13px; font-size: .78rem; }
.btn-lg { padding: 13px 28px; font-size: .95rem; }
.btn-icon { width: 36px; height: 36px; padding: 0; border-radius: 8px; justify-content: center; }
.btn-icon.sm { width: 30px; height: 30px; border-radius: 6px; font-size: .75rem; }

/* ── Badges ──────────────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 9px; border-radius: 20px;
  font-size: .7rem; font-weight: 700; letter-spacing: .02em;
}
.badge-primary { background: var(--primary-bg); color: var(--primary); }
.badge-success { background: var(--success-bg); color: #16a34a; }
.badge-warning { background: var(--warning-bg); color: #d97706; }
.badge-danger  { background: var(--danger-bg);  color: #dc2626; }
.badge-info    { background: var(--info-bg);    color: #2563eb; }
.badge-neutral { background: var(--bg2); color: var(--t3); }

/* ── Forms ────────────────────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block; font-size: .8rem; font-weight: 700; color: var(--t2);
  margin-bottom: 6px;
}
.form-control {
  width: 100%; padding: 10px 14px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--t1); font-size: .87rem; font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,.12);
}
.form-control::placeholder { color: var(--t4); }
select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 90px; }
.input-group {
  position: relative;
}
.input-group .input-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
  color: var(--t3); pointer-events: none; font-size: .85rem;
}
.input-group .form-control { padding-left: 36px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-row.cols3 { grid-template-columns: 1fr 1fr 1fr; }
.form-hint { font-size: .73rem; color: var(--t3); margin-top: 4px; }
.form-error { font-size: .73rem; color: var(--danger); margin-top: 4px; }

/* ── Alerts ───────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px; border-radius: var(--radius-sm);
  display: flex; align-items: flex-start; gap: 10px;
  font-size: .85rem; margin-bottom: 16px;
  border: 1px solid transparent;
}
.alert i { margin-top: 1px; flex-shrink: 0; }
.alert-success { background: var(--success-bg); color: #166534; border-color: #bbf7d0; }
.alert-danger  { background: var(--danger-bg);  color: #991b1b; border-color: #fecaca; }
.alert-warning { background: var(--warning-bg); color: #854d0e; border-color: #fde68a; }
.alert-info    { background: var(--info-bg);    color: #1e3a8a; border-color: #bfdbfe; }

/* ── Modal ───────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.45); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center; padding: 16px;
}
.modal-overlay.active { display: flex; }
.modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%; max-width: 560px;
  max-height: 90vh; overflow-y: auto;
  animation: modalIn .25s ease;
}
.modal-lg { max-width: 800px; }
@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 1.05rem; font-weight: 800; }
.modal-body  { padding: 20px 24px; }
.modal-footer {
  padding: 14px 24px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
}
.modal-close { background: none; border: none; font-size: 1.2rem; color: var(--t3); }
.modal-close:hover { color: var(--t1); }

/* ── Pill / Tag ──────────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px;
  font-size: .85rem; flex-shrink: 0;
  background: var(--primary-bg); color: var(--primary);
}

/* ── Avatar ──────────────────────────────────────────────────── */
.avatar {
  border-radius: 50%; object-fit: cover; flex-shrink: 0;
}
.avatar-group { display: flex; }
.avatar-group .avatar { margin-left: -8px; border: 2px solid var(--surface); }

/* ── Progress ────────────────────────────────────────────────── */
.progress { height: 8px; border-radius: 4px; background: var(--border); overflow: hidden; }
.progress-bar { height: 100%; border-radius: 4px; background: var(--primary); transition: width .4s ease; }
.progress-bar.success { background: var(--success); }
.progress-bar.warning { background: var(--warning); }
.progress-bar.danger  { background: var(--danger); }

/* ── Tabs ────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--border); margin-bottom: 20px; }
.tab-btn {
  padding: 10px 18px; font-size: .84rem; font-weight: 700;
  background: none; border: none; color: var(--t3);
  border-bottom: 2px solid transparent; margin-bottom: -2px;
  transition: color var(--transition);
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-btn:hover  { color: var(--t2); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── Dropdown ────────────────────────────────────────────────── */
.dropdown { position: relative; display: inline-flex; }
.dropdown-menu {
  position: absolute; top: calc(100% + 6px); right: 0;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-md);
  min-width: 180px; z-index: 500;
  display: none; padding: 6px;
  animation: fadeIn .15s ease;
}
.dropdown-menu.open { display: block; }
.dropdown-item {
  display: flex; align-items: center; gap: 8px;
  padding: 9px 12px; border-radius: var(--radius-sm);
  font-size: .83rem; color: var(--t2); font-weight: 600;
  transition: background var(--transition);
}
.dropdown-item:hover { background: var(--bg2); color: var(--t1); }
.dropdown-item.danger { color: var(--danger); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ── Toast / Snackbar ────────────────────────────────────────── */
.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 9999; display: flex; flex-direction: column; gap: 10px;
}
.toast {
  display: flex; align-items: center; gap: 10px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 12px 16px;
  box-shadow: var(--shadow-md); font-size: .84rem; font-weight: 600;
  min-width: 260px; max-width: 360px;
  animation: slideInToast .3s ease;
}
@keyframes slideInToast { from { opacity:0; transform:translateX(30px); } }
.toast-success { border-left: 4px solid var(--success); }
.toast-error   { border-left: 4px solid var(--danger); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-info    { border-left: 4px solid var(--info); }

/* ── Empty State ─────────────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 48px 20px; color: var(--t3);
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: 12px; opacity: .5; }
.empty-state h3 { font-size: .95rem; font-weight: 700; margin-bottom: 6px; color: var(--t2); }
.empty-state p  { font-size: .82rem; }

/* ── Skeleton ────────────────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--border) 25%, var(--surface2) 50%, var(--border) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.4s infinite;
  border-radius: 6px;
}
@keyframes shimmer { 0% { background-position:200% 0; } 100% { background-position:-200% 0; } }

/* ── Search bar ──────────────────────────────────────────────── */
.search-bar {
  display: flex; align-items: center; gap: 8px;
  background: var(--bg2); border: 1.5px solid var(--border);
  border-radius: 20px; padding: 8px 16px;
  transition: border-color var(--transition);
}
.search-bar:focus-within { border-color: var(--primary); background: var(--surface); }
.search-bar input { background: none; border: none; outline: none; color: var(--t1); font-size: .85rem; flex:1; }
.search-bar i { color: var(--t3); font-size: .82rem; }

/* ── Utility ─────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.fw-900 { font-weight: 900; }
.text-primary { color: var(--primary); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.text-muted   { color: var(--t3); font-size: .8rem; }
.d-flex       { display: flex; }
.align-center { align-items: center; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-8   { margin-top: 8px; }
.mt-16  { margin-top: 16px; }
.mt-24  { margin-top: 24px; }
.mb-16  { margin-bottom: 16px; }
.mb-24  { margin-bottom: 24px; }
.flex-1 { flex: 1; }
.w-100  { width: 100%; }
.truncate { overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 16px; }

/* ── Animations ──────────────────────────────────────────────── */
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes fadeUp { from { opacity:0; transform:translateY(14px); } to { opacity:1; transform:translateY(0); } }
.fade-in  { animation: fadeIn .3s ease; }
.fade-up  { animation: fadeUp .4s ease both; }

/* ═══════════════════════════════════════════════════════════════
   LOGIN PAGE
   ═══════════════════════════════════════════════════════════════ */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  padding: 24px;
  background: linear-gradient(135deg,#0f172a 0%,#1e1b4b 50%,#0f172a 100%);
  position: relative; overflow: hidden;
}
.login-page::before {
  content:''; position:absolute; inset:0;
  background: radial-gradient(ellipse at 30% 50%, rgba(99,102,241,.2) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(139,92,246,.15) 0%, transparent 60%);
}
.login-card {
  position: relative; z-index: 1;
  display: flex; width: 100%; max-width: 980px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 32px 80px rgba(0,0,0,.5);
}
.login-left {
  flex: 1; padding: 48px 40px;
  background: linear-gradient(160deg, rgba(99,102,241,.25) 0%, rgba(139,92,246,.2) 100%);
  border-right: 1px solid rgba(255,255,255,.08);
  display: flex; flex-direction: column; justify-content: space-between;
}
.login-right {
  flex: 1; padding: 48px 44px;
  background: rgba(15,23,42,.95);
}
.login-logo-wrap { display: flex; align-items: center; gap: 14px; margin-bottom: 36px; }
.login-logo-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center; font-size: 1.6rem;
}
.login-logo-name { font-size: 1.3rem; font-weight: 900; color: #fff; }
.login-logo-sub  { font-size: .8rem; color: rgba(255,255,255,.5); }
.login-tagline   { font-size: 2rem; font-weight: 900; color: #fff; line-height: 1.2; margin-bottom: 14px; }
.login-desc      { color: rgba(255,255,255,.6); font-size: .87rem; line-height: 1.7; margin-bottom: 28px; }
.login-features  { list-style: none; }
.login-features li {
  display: flex; align-items: center; gap: 10px;
  color: rgba(255,255,255,.7); font-size: .83rem; margin-bottom: 10px;
}
.login-features li::before {
  content: '✓'; width: 20px; height: 20px; border-radius: 50%;
  background: rgba(99,102,241,.3); color: #a5b4fc;
  display: grid; place-items: center; font-size: .7rem; font-weight: 900; flex-shrink: 0;
}
.login-right h2 { font-size: 1.5rem; font-weight: 900; color: #fff; margin-bottom: 6px; }
.login-right .subtitle { color: rgba(255,255,255,.5); font-size: .85rem; margin-bottom: 28px; }
.login-right .form-label { color: rgba(255,255,255,.7); }
.login-right .form-control {
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.12);
  color: #fff;
}
.login-right .form-control:focus {
  border-color: var(--primary);
  background: rgba(255,255,255,.09);
}
.login-right .input-icon { color: rgba(255,255,255,.3); }
.login-btn {
  width: 100%; padding: 13px; border-radius: var(--radius-sm);
  font-size: .92rem; font-weight: 800;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  transition: all var(--transition); margin-top: 8px;
  background: var(--g-admin); color: #fff;
}
.login-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(99,102,241,.4); }
.login-btn.teacher-btn { background: var(--g-teacher); }
.login-btn.teacher-btn:hover { box-shadow: 0 8px 24px rgba(14,165,233,.4); }
.login-btn.student-btn { background: var(--g-student); }
.login-btn.student-btn:hover { box-shadow: 0 8px 24px rgba(34,197,94,.4); }
.login-role-pills {
  display: flex; gap: 8px; margin-bottom: 24px;
}
.login-role-pill {
  flex: 1; padding: 10px; border-radius: var(--radius-sm);
  text-align: center; font-size: .77rem; font-weight: 700;
  border: 1.5px solid rgba(255,255,255,.12);
  color: rgba(255,255,255,.5); cursor: pointer;
  transition: all var(--transition);
}
.login-role-pill.active { border-color: var(--primary); color: #a5b4fc; background: rgba(99,102,241,.12); }
.login-help { color: rgba(255,255,255,.4); font-size: .78rem; text-align: center; margin-top: 16px; }
.login-help a { color: rgba(255,255,255,.6); }
.login-separator { display:flex; align-items:center; gap:10px; margin:16px 0; color:rgba(255,255,255,.3); font-size:.78rem; }
.login-separator::before,.login-separator::after { content:''; flex:1; height:1px; background:rgba(255,255,255,.1); }

/* ── Attendance Grid ──────────────────────────────────────────── */
.attend-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.attend-btn {
  width: 120px; padding: 10px 8px;
  border-radius: 10px; border: 2px solid var(--border);
  background: var(--surface); cursor: pointer;
  text-align: center; font-size: .78rem; font-weight: 700; color: var(--t2);
  transition: all var(--transition);
}
.attend-btn.present { border-color: var(--success); background: var(--success-bg); color: #15803d; }
.attend-btn.absent  { border-color: var(--danger);  background: var(--danger-bg);  color: #b91c1c; }
.attend-btn.late    { border-color: var(--warning);  background: var(--warning-bg); color: #b45309; }
.attend-btn .student-name { font-weight: 800; font-size: .83rem; margin-bottom: 4px; }
.attend-btn .status-row { display:flex; gap:4px; margin-top:6px; justify-content:center; }
.attend-btn .status-row span {
  padding: 2px 6px; border-radius: 4px; font-size: .65rem;
  cursor: pointer; border: 1.5px solid transparent;
}
.attend-btn .p-tag { background:var(--success-bg); color:#15803d; }
.attend-btn .a-tag { background:var(--danger-bg); color:#b91c1c; }
.attend-btn .l-tag { background:var(--warning-bg); color:#b45309; }
.attend-btn.present .p-tag { border-color: var(--success); }
.attend-btn.absent  .a-tag { border-color: var(--danger); }
.attend-btn.late    .l-tag { border-color: var(--warning); }

/* ── Test Question Builder ────────────────────────────────────── */
.question-card {
  background: var(--surface); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 16px 18px; margin-bottom: 12px;
  position: relative;
}
.question-card .q-num {
  width: 28px; height: 28px; border-radius: 8px;
  background: var(--primary-bg); color: var(--primary);
  display: grid; place-items: center;
  font-size: .75rem; font-weight: 900;
}
.option-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.option-row input[type=radio] { width:16px; height:16px; accent-color: var(--success); }
.option-row .form-control { flex:1; }
.option-row label { font-size:.78rem; color: var(--t3); white-space:nowrap; }

/* ── Calendar / Schedule ─────────────────────────────────────── */
.week-grid {
  display: grid; grid-template-columns: repeat(7,1fr); gap: 8px; overflow-x:auto;
}
.week-day-col { min-width: 120px; }
.week-day-head {
  text-align:center; padding: 8px 4px; font-size: .75rem; font-weight: 700;
  color: var(--t3); border-radius: var(--radius-sm);
  background: var(--surface2); margin-bottom: 8px;
}
.week-day-head.today { background: var(--primary-bg); color: var(--primary); }
.sched-slot {
  border-radius: 8px; padding: 8px 10px;
  font-size: .73rem; font-weight: 700; color: #fff;
  margin-bottom: 6px; cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.sched-slot:hover { filter: brightness(1.1); }

/* ── Leaderboard ─────────────────────────────────────────────── */
.lb-row {
  display: flex; align-items: center; gap: 14px; padding: 12px 16px;
  border-bottom: 1px solid var(--border-soft); transition: background var(--transition);
}
.lb-row:hover { background: var(--bg); }
.lb-rank {
  width: 32px; height: 32px; border-radius: 10px;
  display: grid; place-items: center; font-size: .85rem; font-weight: 900;
  flex-shrink: 0;
}
.lb-rank.gold   { background: #fef9c3; color: #a16207; }
.lb-rank.silver { background: #f1f5f9; color: #475569; }
.lb-rank.bronze { background: #fef3c7; color: #92400e; }
.lb-rank.other  { background: var(--bg2); color: var(--t3); }

/* ── Notification dot ────────────────────────────────────────── */
.notif-dot {
  position: absolute; top:-3px; right:-3px;
  width:9px; height:9px; border-radius:50%;
  background:var(--danger); border: 2px solid var(--surface);
}

/* ── Sidebar mobile toggle ────────────────────────────────────── */
.sidebar-toggle {
  display: none;
  background: none; border: none; font-size: 1.2rem; color: var(--t2);
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════ */
@media (max-width: 1100px) {
  .grid-4 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .sidebar-toggle { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .form-row.cols3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .login-card { flex-direction: column; max-width: 480px; }
  .login-left { display: none; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .page-body  { padding: 14px; }
  .topbar     { padding: 0 14px; }
}

/* ═══════════════════════════════════════════════════════════════
   TMS v4.0 — Additional Styles
   ═══════════════════════════════════════════════════════════════ */

/* Role-based badge/accent colors */
.role-super_admin { color: #d97706; }
.role-admin       { color: var(--primary); }
.role-school      { color: #f59e0b; }
.role-teacher     { color: #0ea5e9; }
.role-student     { color: var(--success); }

/* Badge brand */
.badge-brand { background: var(--primary-bg); color: var(--primary); }

/* Improved stat-sub */
.stat-sub.sub-success { color: var(--success); }
.stat-sub.sub-warning { color: var(--warning); }
.stat-sub.sub-danger  { color: var(--danger); }

/* d-none helper */
.d-none { display: none !important; }

/* p-20 helper */
.p-20 { padding: 20px !important; }

/* info btn */
.btn-info    { background: var(--info); color: #fff; }
.btn-info:hover { background: #2563eb; }

/* btn-xs */
.btn-xs { padding: 4px 10px; font-size: .72rem; border-radius: 6px; }

/* form-check */
.form-check { width: 16px; height: 16px; accent-color: var(--primary); flex-shrink: 0; }

/* stat-value alias */
.stat-value { font-size: 1.8rem; font-weight: 900; line-height: 1.1; }

/* modal-bg / modal-box (v3 compat) */
.modal-bg {
  position: fixed; inset: 0; z-index: 1000;
  background: rgba(0,0,0,.5); backdrop-filter: blur(4px);
  display: none; align-items: center; justify-content: center; padding: 16px;
}
.modal-bg.open { display: flex; }
.modal-box {
  background: var(--surface); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); width: 100%; max-width: 580px;
  max-height: 90vh; overflow-y: auto;
  animation: modalIn .25s ease;
}
.modal-box .modal-header {
  padding: 18px 22px 14px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-box .modal-title  { font-size: 1rem; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.modal-box form > .form-group,
.modal-box > form > div.form-group { padding: 0 22px; margin-top: 14px; }
.modal-box form > .modal-footer,
.modal-box .modal-footer { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }
.modal-box .modal-body { padding: 16px 22px; }
.modal-box .modal-close { background: none; border: none; font-size: 1.1rem; color: var(--t3); cursor: pointer; }

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 768px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr !important; } }

/* Stagger animations */
.stagger .fade-up:nth-child(1) { animation-delay: 0s; }
.stagger .fade-up:nth-child(2) { animation-delay: .05s; }
.stagger .fade-up:nth-child(3) { animation-delay: .1s; }
.stagger .fade-up:nth-child(4) { animation-delay: .15s; }
.stagger .fade-up:nth-child(5) { animation-delay: .2s; }
.stagger .fade-up:nth-child(6) { animation-delay: .25s; }

/* data-auto-dismiss */
[data-auto-dismiss] { animation: fadeIn .3s ease; }

/* Responsive sidebar */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0 !important; }
  .sidebar-toggle { display: flex !important; }
  .sidebar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 199; display: none; }
  .sidebar-overlay.open { display: block; }
}

/* text-info shorthand */
.text-info { color: var(--info); }

/* w-100 */
.w-100 { width: 100%; }

/* Table text-center */
table .text-center { text-align: center; }

/* Login page additional for unified v4 */
.d-none { display: none !important; }

/* page body bottom gap */
.page-body { padding-bottom: 40px; }