/* ============================================================
   AL-MANAR SCHOOL MANAGEMENT - PREMIUM DESIGN SYSTEM
   ============================================================ */

/* Google Fonts already loaded via HTML */

:root {
  --bg-base: #0d1117;
  --bg-surface: #161b22;
  --bg-elevated: #1f2937;
  --bg-card: #1a2233;
  --border: #30363d;
  --border-light: #21262d;

  --primary: #3b82f6;
  --primary-glow: rgba(59, 130, 246, 0.25);
  --accent: #8b5cf6;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;

  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #484f58;

  --sidebar-w: 240px;
  --topbar-h: 60px;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  --transition: all 0.2s ease;
}

/* ── Day (Light) Mode – overrides only ── */
body.day-mode {
  --bg-base: #f0f4f8;
  --bg-surface: #ffffff;
  --bg-elevated: #e8edf3;
  --bg-card: #ffffff;
  --border: #d0d7de;
  --border-light: #e2e8f0;
  --text-primary: #1a202c;
  --text-secondary: #4a5568;
  --text-muted: #a0aec0;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
  --primary-glow: rgba(59, 130, 246, 0.15);
}

body.day-mode .marks-input {
  background: #f7fafc;
  color: #1a202c;
}

body.day-mode .student-att-card.absent {
  background: rgba(239, 68, 68, 0.08);
}

body.day-mode .att-toggle {
  background: #d0d7de;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-base);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 99px;
}

/* ════════════════════════════════════════
   LAYOUT
════════════════════════════════════════ */
#app {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition);
}

#sidebar.collapsed {
  width: 64px;
}

#sidebar.collapsed .sidebar-header span,
#sidebar.collapsed .sidebar-footer,
#sidebar.collapsed .nav-item span,
#sidebar.collapsed .school-sub {
  display: none;
}

#sidebar.collapsed .nav-item {
  justify-content: center;
  padding: 12px;
}

#sidebar.collapsed .logo {
  justify-content: center;
}

.sidebar-header {
  padding: 20px 18px 16px;
  border-bottom: 1px solid var(--border-light);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.logo i {
  font-size: 1.5rem;
  -webkit-text-fill-color: var(--primary);
}

.school-sub {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 4px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-item:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

.nav-item.active {
  background: var(--primary-glow);
  color: var(--primary);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.nav-item i {
  width: 18px;
  text-align: center;
  font-size: 1rem;
}

.sidebar-footer {
  padding: 16px 18px;
  color: var(--text-muted);
  font-size: 0.75rem;
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.sidebar-status {
  color: var(--success);
  font-size: 0.5rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1
  }

  50% {
    opacity: 0.4
  }
}

/* ── Main ── */
#main {
  flex: 1;
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

#main.expanded {
  margin-left: 64px;
}

/* ── Topbar ── */
#topbar {
  height: var(--topbar-h);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 50;
}

#sidebar-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  transition: var(--transition);
}

#sidebar-toggle:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

#page-title {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.user-avatar {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
}

/* ── Theme Toggle Button ── */
#theme-toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 99px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.25s ease;
  white-space: nowrap;
}

#theme-toggle:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-glow);
}

body.day-mode #theme-toggle {
  background: #fff7ed;
  border-color: #f59e0b;
  color: #d97706;
}

body.day-mode #theme-toggle:hover {
  background: #fef3c7;
}

/* ── Content ── */
#content {
  flex: 1;
  padding: 24px;
}

/* ════════════════════════════════════════
   COMPONENTS
════════════════════════════════════════ */

/* Cards */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 20px;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-title i {
  color: var(--primary);
}

/* Stat Cards */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.stat-card.blue::before {
  background: var(--primary);
}

.stat-card.purple::before {
  background: var(--accent);
}

.stat-card.green::before {
  background: var(--success);
}

.stat-card.orange::before {
  background: var(--warning);
}

.stat-card.red::before {
  background: var(--danger);
}

.stat-card.cyan::before {
  background: var(--info);
}

.stat-card:hover {
  transform: translateY(-2px);
  border-color: var(--border);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.blue .stat-icon {
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary);
}

.purple .stat-icon {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent);
}

.green .stat-icon {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
}

.orange .stat-icon {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

.red .stat-icon {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.cyan .stat-icon {
  background: rgba(6, 182, 212, 0.15);
  color: var(--info);
}

.stat-info .stat-val {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
}

.stat-info .stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background: #2563eb;
  box-shadow: 0 0 16px var(--primary-glow);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover {
  background: #dc2626;
}

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-success:hover {
  background: #16a34a;
}

.btn-warning {
  background: var(--warning);
  color: #000;
}

.btn-warning:hover {
  background: #d97706;
}

.btn-ghost {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.78rem;
}

.btn-icon {
  padding: 7px 10px;
}

/* Tables */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

thead th {
  background: var(--bg-elevated);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 12px 16px;
  text-align: left;
  white-space: nowrap;
  border-bottom: 1px solid var(--border-light);
}

tbody tr {
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--bg-elevated);
}

tbody td {
  padding: 12px 16px;
  color: var(--text-primary);
  vertical-align: middle;
}

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.72rem;
  font-weight: 600;
}

.badge-blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary);
  border: 1px solid rgba(59, 130, 246, 0.3);
}

.badge-green {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.badge-red {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-orange {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.15);
  color: var(--accent);
  border: 1px solid rgba(139, 92, 246, 0.3);
}

/* Forms */
.form-grid {
  display: grid;
  gap: 16px;
}

.form-grid.cols-2 {
  grid-template-columns: 1fr 1fr;
}

.form-grid.cols-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.form-control {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 10px 14px;
  font-size: 0.875rem;
  font-family: inherit;
  width: 100%;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

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

select.form-control option {
  background: var(--bg-elevated);
}

/* Filters bar */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  align-items: flex-end;
}

.filter-bar .form-group {
  flex: 1;
  min-width: 140px;
}

/* Page header */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h2 {
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-header h2 i {
  color: var(--primary);
}

.page-header p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 2px;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 12px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 0.9rem;
}

/* Modal */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

#modal-overlay.hidden {
  display: none;
}

#modal-box {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(-10px);
  }

  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

#modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border-light);
}

#modal-title {
  font-size: 1rem;
  font-weight: 700;
}

#modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 8px;
  border-radius: 6px;
  transition: var(--transition);
}

#modal-close:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

#modal-body {
  padding: 20px;
}

/* Toast */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast-msg {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 18px;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: var(--shadow);
  animation: toastIn 0.3s ease;
  min-width: 240px;
}

.toast-msg.success {
  border-left: 3px solid var(--success);
}

.toast-msg.error {
  border-left: 3px solid var(--danger);
}

.toast-msg.info {
  border-left: 3px solid var(--primary);
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(20px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Attendance specific */
.attendance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}

.student-att-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  transition: var(--transition);
}

.student-att-card.absent {
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.06);
}

.student-att-info .sname {
  font-weight: 600;
  font-size: 0.85rem;
}

.student-att-info .sroll {
  font-size: 0.73rem;
  color: var(--text-muted);
}

.att-toggle {
  width: 38px;
  height: 22px;
  border-radius: 99px;
  border: none;
  cursor: pointer;
  position: relative;
  transition: var(--transition);
  background: var(--bg-base);
  border: 1px solid var(--border);
}

.att-toggle.absent-on {
  background: var(--danger);
  border-color: var(--danger);
}

.att-toggle::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  top: 2px;
  left: 2px;
  transition: var(--transition);
}

.att-toggle.absent-on::after {
  left: 18px;
}

/* Marks table */
.marks-table th,
.marks-table td {
  text-align: center;
}

.marks-table td:first-child {
  text-align: left;
}

.marks-input {
  width: 60px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 6px;
  padding: 6px;
  text-align: center;
  font-size: 0.85rem;
}

.marks-input:focus {
  outline: none;
  border-color: var(--primary);
}

.marks-total {
  font-weight: 700;
  color: var(--primary);
}

.marks-converted {
  font-weight: 800;
  color: var(--success);
}

/* Sections tag list */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
}

.tag {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 3px 12px;
  font-size: 0.75rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.tag .tag-del {
  cursor: pointer;
  color: var(--danger);
  font-size: 0.65rem;
  background: none;
  border: none;
  padding: 0;
  margin: 0;
}

/* Results page */
.result-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 10px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: center;
}

.grade-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
}

.grade-A {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border: 2px solid var(--success);
}

.grade-B {
  background: rgba(59, 130, 246, 0.15);
  color: var(--primary);
  border: 2px solid var(--primary);
}

.grade-C {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
  border: 2px solid var(--warning);
}

.grade-D {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 2px solid var(--danger);
}

.grade-F {
  background: rgba(239, 68, 68, 0.2);
  color: var(--danger);
  border: 2px solid var(--danger);
}

/* Utility */
.mt-16 {
  margin-top: 16px;
}

.mb-16 {
  margin-bottom: 16px;
}

.gap-8 {
  gap: 8px;
}

.flex {
  display: flex;
  align-items: center;
}

.flex-1 {
  flex: 1;
}

.text-sm {
  font-size: 0.8rem;
}

.text-muted {
  color: var(--text-muted);
}

.text-success {
  color: var(--success);
}

.text-danger {
  color: var(--danger);
}

.fw700 {
  font-weight: 700;
}

.hidden {
  display: none !important;
}

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

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

  #main {
    margin-left: 0 !important;
  }

  .form-grid.cols-2,
  .form-grid.cols-3 {
    grid-template-columns: 1fr;
  }

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

/* ============================================================
   ADMIN LOGIN SCREEN
   ============================================================ */
#login-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

#login-screen.hidden {
  display: none !important;
}

.login-card {
  background: var(--bg-card);
  padding: 40px;
  border-radius: 20px;
  width: 90%;
  max-width: 400px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
}

.login-header {
  text-align: center;
  margin-bottom: 30px;
}

.login-header i {
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 15px;
}

.login-header h1 {
  font-size: 1.5rem;
  margin-bottom: 5px;
}

.login-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.login-alert {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  padding: 12px;
  border-radius: 8px;
  margin-bottom: 20px;
  font-size: 0.9rem;
  text-align: center;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.login-alert.hidden {
  display: none !important;
}

.btn-block {
  margin-top: 10px;
}

/* ── Attendance Avatars ── */
.student-att-avatar {
  width: 40px;
  height: 40px;
  background: var(--bg-elevated);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
}

/* Dashboard Grid 2 */
.dash-grid-2 {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-top: 24px;
}

@media (max-width: 992px) {
  .dash-grid-2 {
    grid-template-columns: 1fr;
  }
}