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

:root {
  --bg-base: #f1f5f9;
  --bg-surface: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: rgba(0,0,0,0.025);
  --border: rgba(0,0,0,0.09);
  --border-hover: rgba(0,0,0,0.18);
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --accent: #6366f1;
  --accent-hover: #4f46e5;
  --accent-glow: rgba(99,102,241,0.18);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --sidebar-w: 260px;
}

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

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

body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(ellipse at 20% 20%, rgba(99,102,241,0.04) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 80%, rgba(16,185,129,0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

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

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-w);
  background: #ffffff;
  backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease;
  box-shadow: 2px 0 12px rgba(0,0,0,0.04);
}

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.logo-text {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, #1e293b, #64748b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.logo-sub {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 1px;
}

.sidebar-user {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }
.user-name { font-size: 13px; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 11px; color: var(--text-muted); }

.role-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.role-admin    { background: rgba(239,68,68,0.12);  color: #dc2626; }
.role-teacher  { background: rgba(99,102,241,0.12); color: #4f46e5; }
.role-student  { background: rgba(16,185,129,0.12); color: #059669; }
.role-parent   { background: rgba(245,158,11,0.12); color: #d97706; }

.sidebar-nav {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 12px 8px 6px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: all 0.2s;
  margin-bottom: 2px;
}

.nav-item:hover {
  background: rgba(99,102,241,0.07);
  color: var(--accent);
}

.nav-item.active {
  background: rgba(99,102,241,0.1);
  color: var(--accent);
  border: 1px solid rgba(99,102,241,0.18);
}

.nav-icon { font-size: 17px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-badge {
  margin-left: auto;
  background: var(--danger);
  color: white;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border);
}

/* MAIN CONTENT */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* TOP NAVBAR */
.topbar {
  height: 64px;
  background: rgba(255,255,255,0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

.topbar-search {
  display: flex;
  align-items: center;
  background: var(--bg-base);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px 14px;
  gap: 8px;
  width: 260px;
}

.topbar-search input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-size: 14px;
  width: 100%;
}

.topbar-search input::placeholder { color: var(--text-muted); }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.icon-btn {
  width: 36px; height: 36px;
  border-radius: 9px;
  background: var(--bg-base);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 17px;
  transition: all 0.2s;
  text-decoration: none;
  position: relative;
}

.icon-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); border-color: var(--border-hover); }

.notif-dot {
  position: absolute;
  top: 6px; right: 6px;
  width: 8px; height: 8px;
  background: var(--danger);
  border-radius: 50%;
  border: 2px solid white;
}

/* PAGE CONTENT */
.page-content {
  flex: 1;
  padding: 28px;
}

/* CARDS */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.2s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.card:hover { border-color: var(--border-hover); box-shadow: 0 4px 16px rgba(0,0,0,0.07); }
.card-body { padding: 24px; }
.card-header { padding: 20px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-footer { padding: 16px 24px; border-top: 1px solid var(--border); }
.card-title { font-size: 16px; font-weight: 700; color: var(--text-primary); }

/* STAT CARDS */
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 22px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--card-accent, var(--accent));
  border-radius: 16px 16px 0 0;
}

.stat-card:hover { transform: translateY(-2px); border-color: var(--border-hover); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }

.stat-icon {
  width: 48px; height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 16px;
}

.stat-value { font-size: 32px; font-weight: 700; color: var(--text-primary); line-height: 1; margin-bottom: 4px; }
.stat-label { font-size: 13px; color: var(--text-muted); }
.stat-change { font-size: 12px; margin-top: 8px; }
.stat-change.up { color: var(--success); }
.stat-change.down { color: var(--danger); }

/* GRADE BADGES */
.grade-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 700;
  font-family: 'Inter', monospace;
}

.grade-excellent    { background: rgba(16,185,129,0.15);  color: #059669; border: 1px solid rgba(16,185,129,0.25); }
.grade-good         { background: rgba(59,130,246,0.15);  color: #2563eb; border: 1px solid rgba(59,130,246,0.25); }
.grade-satisfactory { background: rgba(245,158,11,0.15);  color: #d97706; border: 1px solid rgba(245,158,11,0.25); }
.grade-poor         { background: rgba(239,68,68,0.15);   color: #dc2626; border: 1px solid rgba(239,68,68,0.25); }
.grade-none         { background: rgba(107,114,128,0.1);  color: #6b7280; border: 1px solid rgba(107,114,128,0.2); }

/* ATTENDANCE */
.att-present { color: var(--success); }
.att-absent  { color: var(--danger); }
.att-late    { color: var(--warning); }
.att-excused { color: var(--info); }

/* DATA TABLE */
.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th {
  background: #f8fafc;
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
  transition: background 0.15s;
}

.data-table tr:hover td { background: rgba(99,102,241,0.03); }
.data-table tr:last-child td { border-bottom: none; }
.data-table td strong { color: var(--text-primary); font-weight: 600; }

/* ATOMS TABLE (alias) */
.atoms-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.atoms-table th {
  background: #f8fafc;
  padding: 12px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  border-bottom: 1px solid var(--border);
}

.atoms-table td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
  transition: background 0.15s;
}

.atoms-table tr:hover td { background: rgba(0,0,0,0.02); }
.atoms-table tr:last-child td { border-bottom: none; }
.atoms-table td strong { color: var(--text-primary); font-weight: 600; }

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  white-space: nowrap;
}

.btn { background: var(--bg-base); color: var(--text-secondary); border: 1px solid var(--border); }
.btn:hover { background: #e2e8f0; color: var(--text-primary); }
.btn-primary { background: var(--accent); color: white; border: none; }
.btn-primary:hover { background: var(--accent-hover); box-shadow: 0 4px 16px var(--accent-glow); transform: translateY(-1px); }
.btn-secondary { background: var(--bg-base); color: var(--text-secondary); border: 1px solid var(--border); }
.btn-secondary:hover { background: #e2e8f0; color: var(--text-primary); }
.btn-success { background: rgba(16,185,129,0.12); color: #059669; border: 1px solid rgba(16,185,129,0.25); }
.btn-success:hover { background: rgba(16,185,129,0.2); }
.btn-danger { background: rgba(239,68,68,0.1); color: #dc2626; border: 1px solid rgba(239,68,68,0.25); }
.btn-danger:hover { background: rgba(239,68,68,0.18); }
.btn-warning { background: rgba(245,158,11,0.12); color: #d97706; border: 1px solid rgba(245,158,11,0.25); }
.btn-sm { padding: 6px 12px; font-size: 12px; border-radius: 8px; }
.btn-xs { padding: 4px 9px; font-size: 11px; border-radius: 6px; }

/* FORMS */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-control, .form-select {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 14px;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: all 0.2s;
  font-family: inherit;
}

.form-control:focus,
.form-select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-control::placeholder { color: var(--text-muted); }
.form-control option,
.form-select option { background: #ffffff; color: var(--text-primary); }
select.form-control,
select.form-select { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 100px; }

/* FLASH MESSAGES */
.flash-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-width: 380px;
}

.flash-message {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: 12px;
  backdrop-filter: blur(20px);
  border: 1px solid;
  animation: slideIn 0.3s ease forwards;
  font-size: 14px;
}

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to   { transform: translateX(0);   opacity: 1; }
}
@keyframes slideOut {
  from { transform: translateX(0);   opacity: 1; }
  to   { transform: translateX(100%); opacity: 0; }
}

.flash-success { background: rgba(16,185,129,0.1);  border-color: rgba(16,185,129,0.3); color: #065f46; }
.flash-error   { background: rgba(239,68,68,0.1);   border-color: rgba(239,68,68,0.3);  color: #7f1d1d; }
.flash-warning { background: rgba(245,158,11,0.1);  border-color: rgba(245,158,11,0.3); color: #78350f; }
.flash-info    { background: rgba(59,130,246,0.1);  border-color: rgba(59,130,246,0.3); color: #1e3a5f; }

.flash-close {
  margin-left: auto;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 16px;
  opacity: 0.6;
  flex-shrink: 0;
  padding: 0;
  line-height: 1;
}
.flash-close:hover { opacity: 1; }

/* GRID */
.grid   { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* FILTERS BAR */
.filters-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

/* PAGINATION */
.pagination {
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
  padding: 20px 0;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: 1px solid var(--border);
  transition: all 0.2s;
}

.page-btn:hover  { background: #e2e8f0; color: var(--text-primary); }
.page-btn.active { background: var(--accent); color: white; border-color: var(--accent); }
.page-btn.disabled { opacity: 0.4; cursor: not-allowed; }

/* SCHEDULE GRID */
.schedule-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.schedule-day-header {
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 12px 8px;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 10px;
}

.schedule-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  font-size: 12px;
  margin-bottom: 6px;
  position: relative;
  overflow: hidden;
  transition: all 0.2s;
}

.schedule-item::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--subj-color, var(--accent));
  border-radius: 3px 0 0 3px;
}

.schedule-item:hover { border-color: var(--border-hover); transform: scale(1.02); }
.schedule-lesson-num { font-size: 10px; color: var(--text-muted); margin-bottom: 4px; }
.schedule-subject    { font-weight: 600; color: var(--text-primary); }
.schedule-time       { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
.schedule-room       { font-size: 10px; color: var(--accent); margin-top: 2px; }

/* NOTIFICATION ITEMS */
.notification-item {
  display: flex;
  gap: 14px;
  padding: 16px;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  margin-bottom: 10px;
  transition: all 0.2s;
}

.notification-item.unread {
  border-left: 3px solid var(--accent);
  background: rgba(99,102,241,0.04);
}

.notification-item:hover { border-color: var(--border-hover); }
.notif-icon    { font-size: 22px; flex-shrink: 0; }
.notif-title   { font-size: 14px; font-weight: 600; color: var(--text-primary); margin-bottom: 4px; }
.notif-message { font-size: 13px; color: var(--text-secondary); }
.notif-time    { font-size: 11px; color: var(--text-muted); margin-top: 6px; }

/* BADGES */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-success { background: rgba(16,185,129,0.12); color: #059669; }
.badge-warning { background: rgba(245,158,11,0.12); color: #d97706; }
.badge-danger  { background: rgba(239,68,68,0.12);  color: #dc2626; }
.badge-info    { background: rgba(59,130,246,0.12); color: #2563eb; }
.badge-gray    { background: rgba(107,114,128,0.1); color: #6b7280; }

/* PROGRESS BAR */
.progress { background: rgba(0,0,0,0.08); border-radius: 20px; height: 8px; overflow: hidden; }
.progress-bar { height: 100%; border-radius: 20px; transition: width 0.5s ease; }

/* JOURNAL TABLE */
.journal-table { overflow-x: auto; }
.journal-table table { min-width: 800px; border-collapse: separate; border-spacing: 0; }
.journal-table th { position: sticky; top: 0; z-index: 10; }
.journal-cell { text-align: center; }

/* JOURNAL INLINE EDIT */
.grade-cell {
  cursor: pointer;
  min-width: 44px;
  height: 36px;
  border-radius: 8px;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.grade-cell:hover {
  background: rgba(99,102,241,0.08);
  outline: 2px dashed rgba(99,102,241,0.3);
  outline-offset: 1px;
}

.grade-cell.saving { opacity: 0.5; pointer-events: none; }

/* Grade badge colors for journal (numeric) */
.g-high   { background: rgba(16,185,129,0.15); color: #059669; border: 1px solid rgba(16,185,129,0.3); border-radius: 8px; padding: 3px 8px; font-weight: 700; font-size: 14px; display: inline-block; }
.g-mid    { background: rgba(59,130,246,0.15);  color: #2563eb; border: 1px solid rgba(59,130,246,0.3);  border-radius: 8px; padding: 3px 8px; font-weight: 700; font-size: 14px; display: inline-block; }
.g-low    { background: rgba(245,158,11,0.15);  color: #d97706; border: 1px solid rgba(245,158,11,0.3);  border-radius: 8px; padding: 3px 8px; font-weight: 700; font-size: 14px; display: inline-block; }
.g-fail   { background: rgba(239,68,68,0.15);   color: #dc2626; border: 1px solid rgba(239,68,68,0.3);   border-radius: 8px; padding: 3px 8px; font-weight: 700; font-size: 14px; display: inline-block; }
.g-absent { background: rgba(239,68,68,0.1);    color: #dc2626; border: 1px solid rgba(239,68,68,0.25);  border-radius: 8px; padding: 3px 8px; font-weight: 700; font-size: 13px; display: inline-block; }

/* GRADE POPUP EDITOR */
.grade-popup {
  position: fixed;
  z-index: 9000;
  background: white;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  min-width: 220px;
  animation: popIn 0.15s ease;
}

@keyframes popIn {
  from { transform: scale(0.9); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}

.grade-popup-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.grade-popup-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin-bottom: 10px;
}

.grade-popup-btn {
  padding: 8px 4px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #f8fafc;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  color: var(--text-primary);
}

.grade-popup-btn:hover { background: var(--accent); color: white; border-color: var(--accent); }

.grade-popup-btn.absent-btn {
  grid-column: span 2;
  background: rgba(239,68,68,0.08);
  color: #dc2626;
  border-color: rgba(239,68,68,0.25);
}

.grade-popup-btn.absent-btn:hover { background: #dc2626; color: white; }

.grade-popup-btn.clear-btn {
  grid-column: span 2;
  background: rgba(107,114,128,0.08);
  color: #6b7280;
  font-size: 12px;
}

.grade-popup-btn.clear-btn:hover { background: #6b7280; color: white; }

.grade-popup-overlay {
  position: fixed;
  inset: 0;
  z-index: 8999;
}

/* AVATAR INITIALS */
.avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

/* CHART CONTAINERS */
.chart-container { position: relative; }
canvas { max-width: 100%; }

/* EMPTY STATE */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state-icon  { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }
.empty-state-title { font-size: 18px; font-weight: 600; color: var(--text-secondary); margin-bottom: 8px; }
.empty-state-text  { font-size: 14px; }

/* PAGE HEADER */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 16px;
}
.page-header-title { font-size: 24px; font-weight: 700; color: var(--text-primary); }
.page-header-sub   { font-size: 14px; color: var(--text-muted); margin-top: 4px; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.25); }

/* UTILITIES */
.text-primary   { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-muted     { color: var(--text-muted) !important; }
.text-success   { color: var(--success) !important; }
.text-danger    { color: var(--danger) !important; }
.text-warning   { color: var(--warning) !important; }
.text-accent    { color: var(--accent) !important; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.d-flex { display: flex; }
.align-center     { align-items: center; }
.justify-between  { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mb-8   { margin-bottom: 8px; }
.mb-16  { margin-bottom: 16px; }
.mb-20  { margin-bottom: 20px; }
.mb-28  { margin-bottom: 28px; }
.mt-4   { margin-top: 4px; }
.mt-8   { margin-top: 8px; }
.ml-auto    { margin-left: auto; }
.w-full     { width: 100%; }
.text-center { text-align: center; }
.text-right  { text-align: right; }
.fs-12 { font-size: 12px; }
.fs-13 { font-size: 13px; }
.fs-14 { font-size: 14px; }

/* DIVIDER */
.divider { height: 1px; background: var(--border); margin: 20px 0; }

/* LOADING */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(241,245,249,0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.spinner {
  width: 40px; height: 40px;
  border: 3px solid rgba(0,0,0,0.08);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* RESPONSIVE */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --sidebar-w: 0px; }
  .sidebar { transform: translateX(-260px); }
  .sidebar.open { transform: translateX(0); width: 260px; }
  .main-content { margin-left: 0; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .page-content { padding: 16px; }
  .schedule-grid { grid-template-columns: 1fr; }
  .topbar-search { display: none; }
}

/* AUTH PAGE */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-base);
  padding: 20px;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}

.auth-logo { text-align: center; margin-bottom: 32px; }

.auth-logo-icon {
  width: 56px; height: 56px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
}

.auth-logo-name {
  font-size: 28px;
  font-weight: 800;
  background: linear-gradient(135deg, #1e293b, #64748b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-logo-sub { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

.auth-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 24px;
  text-align: center;
}

/* STUDENT PROFILE CARD */
.student-profile-card {
  background: linear-gradient(135deg, rgba(99,102,241,0.07), rgba(139,92,246,0.05));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: 20px;
  padding: 24px;
  display: flex;
  gap: 20px;
  align-items: center;
  margin-bottom: 24px;
}

.profile-avatar-lg {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

/* BACK LINK */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  margin-bottom: 20px;
  transition: color 0.2s;
}
.back-link:hover { color: var(--text-primary); }

/* DROPDOWN */
.dropdown { position: relative; }
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px;
  min-width: 180px;
  z-index: 200;
  display: none;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.dropdown.open .dropdown-menu { display: block; }
.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  transition: all 0.15s;
}
.login-logo .icon{
  width:120px !important;
  height:120px !important;
  border-radius:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto 18px;
  overflow:hidden;
  background:none !important;
  box-shadow:none !important;
}

.login-logo .icon img{
  width:100% !important;
  height:100% !important;
  object-fit:contain;
  display:block;
}
.dropdown-item:hover { background: rgba(99,102,241,0.06); color: var(--accent); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }