/* ============================================================
   SCHOOL MANAGEMENT SYSTEM - Main Stylesheet
   ============================================================ */

:root {
  --primary:        #1a5276;
  --primary-light:  #2980b9;
  --primary-dark:   #154360;
  --accent:         #e67e22;
  --accent-light:   #f39c12;
  --success:        #27ae60;
  --danger:         #e74c3c;
  --warning:        #f39c12;
  --info:           #2980b9;
  --bg:             #f0f4f8;
  --sidebar-bg:     #0d2137;
  --sidebar-text:   #a8c0d6;
  --sidebar-active: #ffffff;
  --sidebar-hover:  #1a3a55;
  --card-bg:        #ffffff;
  --border:         #dce4ec;
  --text:           #2c3e50;
  --text-muted:     #7f8c8d;
  --sidebar-w:      260px;
  --topbar-h:       60px;
  --radius:         8px;
  --shadow:         0 2px 12px rgba(0,0,0,0.08);
  --shadow-md:      0 4px 20px rgba(0,0,0,0.12);
  --font-body:      'Inter', sans-serif;
  --font-heading:   'Poppins', sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── SIDEBAR ── */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  z-index: 1000;
  transition: transform .25s ease;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 20px;
  height: var(--topbar-h);
  background: var(--primary-dark);
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.sidebar-brand i { font-size: 20px; color: var(--accent); }

.sidebar-nav {
  padding: 12px 0 24px;
  flex: 1;
}

.nav-section {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #4a6a85;
  padding: 14px 20px 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--sidebar-text);
  text-decoration: none;
  font-size: 13.5px;
  border-left: 3px solid transparent;
  transition: background .15s, color .15s, border-color .15s;
}

.nav-item i { width: 18px; text-align: center; font-size: 14px; opacity: .85; }

.nav-item:hover {
  background: var(--sidebar-hover);
  color: #fff;
  border-left-color: var(--primary-light);
}

.nav-item.active {
  background: var(--primary);
  color: var(--sidebar-active);
  border-left-color: var(--accent);
  font-weight: 600;
}

/* ── TOPBAR ── */
.topbar {
  position: fixed;
  top: 0;
  left: var(--sidebar-w);
  right: 0;
  height: var(--topbar-h);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  z-index: 999;
  gap: 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.sidebar-toggle {
  background: none;
  border: none;
  font-size: 18px;
  color: var(--text-muted);
  cursor: pointer;
  display: none;
  padding: 4px 8px;
}

.topbar-title {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text);
}

.topbar-user i { font-size: 20px; color: var(--primary); }

.role-badge {
  background: var(--primary);
  color: #fff;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
  text-transform: capitalize;
}

.btn-logout {
  color: var(--danger);
  font-size: 18px;
  text-decoration: none;
  padding: 4px 6px;
  border-radius: 6px;
  transition: background .15s;
}
.btn-logout:hover { background: #fdecea; }

/* ── Notification bell ── */
.notif-bell {
    position: relative !important;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px; height: 36px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 16px;
    flex-shrink: 0;
    transition: background .15s, color .15s;
}
.notif-bell:hover { background: var(--border); color: var(--primary); }
.notif-count {
    position: absolute !important;
    top: 0px; right: 0px;
    background: #ef4444 !important;
    color: #fff !important;
    font-size: 10px;
    font-weight: 800;
    min-width: 18px; height: 18px;
    border-radius: 9px;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
    line-height: 1;
    border: 2px solid #fff;
    z-index: 10;
    pointer-events: none;
}

/* ── MAIN CONTENT ── */
.main-content {
  margin-left: var(--sidebar-w);
  margin-top: var(--topbar-h);
  padding: 24px;
  min-height: calc(100vh - var(--topbar-h));
}

/* ── LOGIN PAGE ── */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 44px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo img {
  max-height: 80px;
  max-width: 200px;
  object-fit: contain;
}

.login-logo h1 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--primary);
  margin-top: 10px;
}

.login-logo p {
  font-size: 12px;
  color: var(--text-muted);
}

/* ── CARDS ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  margin-bottom: 20px;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-header h2, .card-header h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-header h2 i, .card-header h3 i { color: var(--primary); }

.card-body { padding: 20px; }

/* ── STAT CARDS ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-card.accent  { border-left-color: var(--accent); }
.stat-card.success { border-left-color: var(--success); }
.stat-card.info    { border-left-color: var(--info); }
.stat-card.warning { border-left-color: var(--warning); }

.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: rgba(26,82,118,.1);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.stat-card.accent  .stat-icon { background: rgba(230,126,34,.1);  color: var(--accent); }
.stat-card.success .stat-icon { background: rgba(39,174,96,.1);   color: var(--success); }
.stat-card.info    .stat-icon { background: rgba(41,128,185,.1);  color: var(--info); }
.stat-card.warning .stat-icon { background: rgba(243,156,18,.1);  color: var(--warning); }

.stat-info h3 { font-size: 24px; font-weight: 700; font-family: var(--font-heading); }
.stat-info p  { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ── FORMS ── */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}

.form-label .req { color: var(--danger); margin-left: 2px; }

.form-control, .form-select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text);
  background: #fff;
  transition: border-color .15s, box-shadow .15s;
  outline: none;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(41,128,185,.15);
}

textarea.form-control { resize: vertical; min-height: 80px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

.form-hint { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.form-error { font-size: 12px; color: var(--danger); margin-top: 4px; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 13.5px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: opacity .15s, transform .1s, box-shadow .15s;
  white-space: nowrap;
}

.btn:hover  { opacity: .88; }
.btn:active { transform: scale(.98); }

.btn-primary  { background: var(--primary);  color: #fff; }
.btn-accent   { background: var(--accent);   color: #fff; }
.btn-success  { background: var(--success);  color: #fff; }
.btn-danger   { background: var(--danger);   color: #fff; }
.btn-warning  { background: var(--warning);  color: #fff; }
.btn-info     { background: var(--info);     color: #fff; }
.btn-outline  { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-sm       { padding: 5px 12px; font-size: 12px; }
.btn-icon     { padding: 6px 8px; }

/* ── TABLES ── */
.table-wrapper { overflow-x: auto; }

table.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}

.data-table thead th {
  background: #f5f8fb;
  color: var(--text-muted);
  font-weight: 700;
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: 10px 14px;
  border-bottom: 2px solid var(--border);
  text-align: left;
  white-space: nowrap;
}

.data-table tbody tr { border-bottom: 1px solid var(--border); transition: background .1s; }
.data-table tbody tr:hover { background: #f7fafd; }
.data-table tbody td { padding: 10px 14px; }
.data-table tbody tr:last-child { border-bottom: none; }

/* ── BADGES ── */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .03em;
}

.badge-fa      { background: #d5f5e3; color: #1e8449; }
.badge-ma      { background: #d6eaf8; color: var(--primary-dark); }
.badge-a       { background: #fdebd0; color: #a04000; }
.badge-success { background: #d5f5e3; color: #1e8449; }
.badge-danger  { background: #fdecea; color: #922b21; }
.badge-warning { background: #fef9e7; color: #9a7d0a; }
.badge-info    { background: #d6eaf8; color: var(--primary-dark); }
.badge-secondary { background: #eaecee; color: #555; }

/* Attendance badges */
.badge-present  { background: #d5f5e3; color: #1e8449; }
.badge-absent   { background: #fdecea; color: #922b21; }
.badge-late     { background: #fef9e7; color: #9a7d0a; }
.badge-excused  { background: #d6eaf8; color: var(--primary-dark); }

/* ── ALERTS ── */
.alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius);
  margin-bottom: 16px;
  font-size: 13.5px;
  border-left: 4px solid transparent;
}

.alert i { font-size: 15px; flex-shrink: 0; }
.alert-close { margin-left: auto; background: none; border: none; font-size: 18px; cursor: pointer; opacity: .5; line-height: 1; }

.alert-success { background: #eafaf1; border-color: var(--success); color: #1e8449; }
.alert-danger  { background: #fdecea; border-color: var(--danger);  color: #922b21; }
.alert-warning { background: #fef9e7; border-color: var(--warning); color: #9a7d0a; }
.alert-info    { background: #d6eaf8; border-color: var(--info);    color: var(--primary-dark); }

/* ── PAGE HEADER ── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 12px;
  flex-wrap: wrap;
}

.page-header h1 {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-header h1 i { color: var(--primary); font-size: 18px; }

/* ── FILTER BAR ── */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: flex-end;
  margin-bottom: 16px;
}

.filter-bar .form-group { margin-bottom: 0; min-width: 160px; }

/* ── PAGINATION ── */
.pagination {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
  margin-top: 16px;
}

.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  color: var(--text);
  border: 1px solid var(--border);
  background: #fff;
  transition: background .15s;
}

.pagination a:hover { background: var(--bg); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ── MODAL ── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 2000;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}

.modal {
  background: #fff;
  border-radius: 12px;
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-md);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 15px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: var(--text-muted);
}

.modal-body    { padding: 20px; }
.modal-footer  { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

/* ── REPORT CARD (print) ── */
@media print {
  .sidebar, .topbar, .no-print { display: none !important; }
  .main-content { margin: 0; padding: 0; }
  body { background: #fff; }
  .report-card { page-break-after: always; }
}

/* ── REPORT CARD LAYOUT ── */
.report-card {
  max-width: 780px;
  margin: 0 auto 40px;
  background: #fff;
  border: 1px solid #ccc;
  border-radius: 8px;
  overflow: hidden;
  font-size: 13px;
}

.rc-header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  background: var(--primary);
  color: #fff;
}

.rc-header img { height: 60px; filter: brightness(0) invert(1); }

.rc-header-info h2 { font-size: 20px; font-family: var(--font-heading); }
.rc-header-info p  { font-size: 12px; opacity: .85; }

.rc-student-info {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-bottom: 2px solid var(--primary);
}

.rc-info-cell {
  padding: 10px 16px;
  border-right: 1px solid var(--border);
}

.rc-info-cell:last-child { border-right: none; }
.rc-info-cell label { font-size: 10px; text-transform: uppercase; color: var(--text-muted); font-weight: 700; display: block; }
.rc-info-cell span  { font-size: 14px; font-weight: 600; }

.rc-marks-table { width: 100%; border-collapse: collapse; }
.rc-marks-table th, .rc-marks-table td { padding: 8px 14px; border: 1px solid var(--border); text-align: left; }
.rc-marks-table th { background: #f5f8fb; font-size: 11px; text-transform: uppercase; color: var(--text-muted); }

.rc-comments { padding: 16px 24px; }
.rc-comments label { font-size: 11px; font-weight: 700; text-transform: uppercase; color: var(--text-muted); }
.rc-comments p { margin-top: 4px; margin-bottom: 14px; }

.rc-signatures {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--border);
  padding: 16px 24px;
}

.rc-sig { text-align: center; }
.rc-sig .sig-line { border-top: 1px solid #999; width: 120px; margin: 40px auto 6px; }
.rc-sig label { font-size: 11px; color: var(--text-muted); }

/* ── ATTENDANCE GRID ── */
.att-grid { display: flex; flex-wrap: wrap; gap: 6px; padding: 16px; }

.att-day {
  width: 36px; height: 36px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform .1s;
}

.att-day:hover { transform: scale(1.1); }
.att-day.present  { background: #d5f5e3; color: #1e8449; border-color: #82e0aa; }
.att-day.absent   { background: #fdecea; color: #922b21; border-color: #f1948a; }
.att-day.late     { background: #fef9e7; color: #9a7d0a; border-color: #f9e79f; }
.att-day.excused  { background: #d6eaf8; color: var(--primary-dark); border-color: #85c1e9; }
.att-day.holiday  { background: #f0f0f0; color: #aaa; }
.att-day.empty    { background: transparent; border: none; pointer-events: none; }

/* ── SIDEBAR OVERLAY (mobile) ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,.45);
  z-index: 999;
}
.sidebar-overlay.active { display: block; }

/* ── FORM ROW ── */
.form-row   { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }

/* ── RESPONSIVE ── */

/* Tablet – sidebar collapses to off-canvas */
@media (max-width: 900px) {
  html, body { overflow-x: hidden; max-width: 100%; }
  .sidebar {
    position: fixed !important;
    top: 0; left: 0;
    height: 100vh !important;
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform .25s ease;
  }
  .sidebar.open { transform: translateX(0) !important; }
  .topbar {
    left: 0 !important;
    right: 0 !important;
    padding: 0 12px !important;
  }
  .main-content { margin-left: 0 !important; }
  .sidebar-toggle { display: flex !important; align-items: center; }
  .topbar-title { font-size: 14px; }
  .topbar-right { gap: 8px; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .rc-student-info { grid-template-columns: 1fr 1fr; }
  .rc-signatures { grid-template-columns: 1fr; gap: 16px; }
  .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .page-header { flex-wrap: wrap; }
  .card-header { flex-wrap: wrap; gap: 8px; }
}

/* Phone – compact layout */
@media (max-width: 600px) {
  html, body { overflow-x: hidden; }

  /* Base spacing */
  .main-content { padding: 12px; }

  /* Stats */
  .stats-grid { grid-template-columns: 1fr 1fr; }

  /* Filters */
  .filter-bar { flex-direction: column; }
  .filter-bar .form-group { min-width: 100%; width: 100%; }

  /* Page header stacks and shrinks */
  .page-header { flex-direction: column; align-items: flex-start; gap: 8px; }
  .page-header h1 { font-size: 16px; }
  .page-header .btn { width: 100%; justify-content: center; }

  /* Cards */
  .card-body { padding: 12px; }
  .card-header { padding: 12px 14px; }
  .card-header h3 { font-size: 14px; }

  /* Tables scroll, always */
  .table-wrapper { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .data-table { min-width: 480px; }

  /* Topbar compact — prevent overflow */
  .topbar { padding: 0 10px !important; gap: 6px !important; }
  .topbar-title { font-size: 13px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .role-badge { display: none; }
  .topbar-user { font-size: 12px; gap: 4px; min-width: 0; overflow: hidden; }
  .topbar-user > span.topbar-user { max-width: 90px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .topbar-user i { font-size: 17px; }
  .topbar-right { gap: 6px; flex-shrink: 0; }

  /* Modal: slide up from bottom */
  .modal-backdrop { align-items: flex-end; padding: 0; }
  .modal {
    border-radius: 16px 16px 0 0;
    max-height: 92vh;
    max-width: 100%;
    width: 100%;
  }

  /* Buttons */
  .btn { font-size: 13px; padding: 8px 14px; }
  .btn-sm { font-size: 11.5px; padding: 5px 10px; }

  /* Login */
  .login-card { padding: 28px 20px; margin: 12px; }

  /* Alerts */
  .alert { font-size: 13px; }
}

/* Very small phones */
@media (max-width: 400px) {
  .stats-grid { grid-template-columns: 1fr; }
  .main-content { padding: 10px; }
  .topbar-user > span:first-of-type { display: none; }
}