/* ============================================================
   SCHOOL MANAGEMENT SYSTEM — High-Modern Dark UI
   ============================================================ */

/* ── Imports ─────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600&display=swap');

/* ── CSS Variables ───────────────────────────────────────── */
/* Light mode is the default */
:root {
  /* Palette */
  --bg-primary:    #f0f2ff;
  --bg-secondary:  #e8eaff;
  --bg-card:       #ffffff;
  --bg-card-hover: #f5f5ff;
  --bg-input:      #f8f8ff;
  --bg-sidebar:    #1a1a3e;
  --bg-glass:      rgba(108,99,255,0.04);
  --border:        rgba(108,99,255,0.2);
  --border-light:  rgba(108,99,255,0.12);

  /* Accent */
  --accent:        #6c63ff;
  --accent-2:      #00d4ff;
  --accent-3:      #ff6b6b;
  --accent-4:      #10b981;
  --accent-5:      #f59e0b;
  --gradient:      linear-gradient(135deg, #6c63ff, #00d4ff);
  --gradient-warm: linear-gradient(135deg, #ff6b6b, #f59e0b);
  --gradient-green:linear-gradient(135deg, #10b981, #00d4ff);

  /* Text */
  --text-primary:  #1a1a3e;
  --text-secondary:#4a4a7a;
  --text-muted:    #8a8ab0;
  --text-inverse:  #f0f0ff;

  /* Shadows */
  --shadow-sm:     0 2px 8px rgba(108,99,255,0.1);
  --shadow-md:     0 8px 32px rgba(108,99,255,0.12);
  --shadow-lg:     0 20px 60px rgba(108,99,255,0.15);
  --shadow-accent: 0 8px 32px rgba(108,99,255,0.25);
  --shadow-card:   0 4px 24px rgba(108,99,255,0.12), 0 0 0 1px var(--border);

  /* Radius */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full:9999px;

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
  --transition-fast: all 0.15s ease;
  --transition-slow: all 0.5s cubic-bezier(0.4,0,0.2,1);

  /* Sidebar */
  --sidebar-width: 260px;
  --sidebar-collapsed: 72px;
  --header-height: 68px;
}

/* Dark mode */
[data-theme="dark"] {
  --bg-primary:    #08081a;
  --bg-secondary:  #0f0f2d;
  --bg-card:       #12122a;
  --bg-card-hover: #1a1a3e;
  --bg-input:      #0d0d24;
  --bg-sidebar:    #0a0a1f;
  --bg-glass:      rgba(255,255,255,0.04);
  --border:        rgba(108,99,255,0.18);
  --border-light:  rgba(255,255,255,0.06);
  --text-primary:  #f0f0ff;
  --text-secondary:#a0a0c0;
  --text-muted:    #606080;
  --text-inverse:  #08081a;
  --shadow-sm:     0 2px 8px rgba(0,0,0,0.4);
  --shadow-md:     0 8px 32px rgba(0,0,0,0.5);
  --shadow-lg:     0 20px 60px rgba(0,0,0,0.6);
  --shadow-accent: 0 8px 32px rgba(108,99,255,0.35);
  --shadow-card:   0 4px 24px rgba(0,0,0,0.4), 0 0 0 1px var(--border);
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Poppins', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

h1,h2,h3,h4,h5,h6 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

a { color: var(--accent-2); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--accent); }

img { max-width: 100%; height: auto; }
button { cursor: pointer; }
input,select,textarea { font-family: inherit; }

/* ── Scrollbar ───────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: var(--radius-full);
}

/* ── Selection ───────────────────────────────────────────── */
::selection { background: rgba(108,99,255,0.3); color: #fff; }

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

/* ── Sidebar ─────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 200;
  transition: var(--transition);
  overflow-x: hidden;
}

.sidebar.collapsed { width: var(--sidebar-collapsed); }
.sidebar.collapsed .nav-label,
.sidebar.collapsed .sidebar-logo-text,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .sidebar-user-info { opacity: 0; pointer-events: none; width: 0; overflow: hidden; }

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

.sidebar-logo {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  box-shadow: var(--shadow-accent);
  font-family: 'Poppins', sans-serif;
}

.sidebar-logo-text {
  overflow: hidden;
  white-space: nowrap;
  transition: var(--transition);
}

.sidebar-logo-text h3 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.sidebar-logo-text span {
  font-size: 11px;
  color: var(--text-muted);
}

.nav-section {
  padding: 8px 12px 4px;
}

.nav-section-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 8px 4px 4px;
  transition: var(--transition);
}

.nav-items {
  padding: 4px 12px;
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(108,99,255,0.5) rgba(255,255,255,0.04);
}
.nav-items::-webkit-scrollbar { width: 5px; }
.nav-items::-webkit-scrollbar-track {
  background: rgba(255,255,255,0.04);
  border-radius: var(--radius-full);
  margin: 8px 0;
}
.nav-items::-webkit-scrollbar-thumb {
  background: rgba(108,99,255,0.5);
  border-radius: var(--radius-full);
}
.nav-items::-webkit-scrollbar-thumb:hover { background: var(--accent); }

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  margin-bottom: 2px;
}

.nav-item:hover, .nav-item.active {
  background: rgba(108,99,255,0.15);
  color: var(--text-primary);
}

.nav-item.active {
  background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(0,212,255,0.1));
  color: #fff;
  box-shadow: inset 0 0 0 1px rgba(108,99,255,0.3);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--gradient);
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.nav-label { transition: var(--transition); }

.nav-badge {
  margin-left: auto;
  background: var(--accent-3);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.sidebar-user-info {
  overflow: hidden;
  white-space: nowrap;
  flex: 1;
  transition: var(--transition);
}

.sidebar-user-info strong {
  display: block;
  font-size: 13px;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-user-info span {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: capitalize;
}

/* ── Main Content ─────────────────────────────────────────── */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  background: var(--bg-primary);
}

.sidebar.collapsed ~ .main-content {
  margin-left: var(--sidebar-collapsed);
}

/* ── Top Header ───────────────────────────────────────────── */
.top-header {
  height: var(--header-height);
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
}

.header-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
}

.header-toggle:hover { background: var(--bg-glass); color: var(--text-primary); }

.header-search {
  flex: 1;
  max-width: 400px;
  position: relative;
}

.header-search input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 9px 16px 9px 40px;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition-fast);
}

.header-search input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.15);
}

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

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.header-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 10px;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  position: relative;
}

.header-btn:hover { background: rgba(108,99,255,0.1); color: var(--text-primary); }

.badge-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--accent-3);
  border-radius: 50%;
  border: 2px solid var(--bg-card);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%,100% { transform: scale(1); opacity: 1; }
  50%      { transform: scale(1.3); opacity: 0.7; }
}

.lang-selector {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 8px 12px;
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  outline: none;
  transition: var(--transition-fast);
}

.lang-selector:hover { border-color: var(--accent); }

/* ── Page Body ────────────────────────────────────────────── */
.page-body {
  flex: 1;
  padding: 28px;
}

.page-title {
  margin-bottom: 28px;
}

.page-title h1 {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.page-title p { color: var(--text-secondary); font-size: 14px; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.breadcrumb a { color: var(--accent-2); }
.breadcrumb span { color: var(--text-muted); }

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

/* ── Cards ───────────────────────────────────────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}

.card:hover::before { opacity: 0.5; }
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md), 0 0 0 1px var(--border); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.card-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ── Stat Cards ───────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: default;
}

.stat-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: var(--transition);
  border-radius: inherit;
}

.stat-card:hover { transform: translateY(-4px) scale(1.01); box-shadow: var(--shadow-accent); }
.stat-card:hover::after { opacity: 0.05; }

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.stat-icon svg {
  width: 24px;
  height: 24px;
  stroke: #fff;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.stat-info { flex: 1; position: relative; z-index: 1; }

.stat-value {
  font-size: 32px;
  font-weight: 800;
  font-family: 'Poppins', sans-serif;
  line-height: 1;
  margin-bottom: 4px;
  counter-reset: none;
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.stat-change {
  font-size: 11px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
}

.stat-change.up   { color: var(--accent-4); }
.stat-change.down { color: var(--accent-3); }

/* ── 3D Card Effect ──────────────────────────────────────── */
.card-3d {
  transform-style: preserve-3d;
  perspective: 1000px;
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.card-3d:hover {
  transform: rotateY(3deg) rotateX(2deg) translateY(-6px);
  box-shadow: 20px 20px 60px rgba(0,0,0,0.5), 0 0 0 1px var(--border);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  font-family: 'Poppins', sans-serif;
  letter-spacing: 0.01em;
}

.btn svg { width: 16px; height: 16px; stroke: currentColor; fill: none; stroke-width: 2; }

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(108,99,255,0.5);
  color: #fff;
}

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

.btn-secondary:hover {
  background: rgba(108,99,255,0.1);
  border-color: var(--accent);
  color: var(--text-primary);
}

.btn-success {
  background: linear-gradient(135deg, #10b981, #059669);
  color: #fff;
}

.btn-success:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(16,185,129,0.4); }

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #fff;
}

.btn-danger:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(239,68,68,0.4); }

.btn-warning {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #fff;
}

.btn-sm { padding: 7px 14px; font-size: 12px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }

.btn-icon {
  padding: 8px;
  border-radius: var(--radius-md);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
}

.btn-icon:hover { background: rgba(108,99,255,0.1); color: var(--accent); }

/* ── 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: 0.05em;
}

.form-control {
  width: 100%;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 11px 14px;
  font-size: 14px;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition-fast);
  font-family: 'Inter', sans-serif;
}

.form-control:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,99,255,0.15);
  background: var(--bg-card);
}

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

.form-control:hover:not(:focus) { border-color: rgba(108,99,255,0.4); }

select.form-control {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236c63ff' stroke-width='2'%3E%3Cpolyline points='6,9 12,15 18,9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-error { color: var(--accent-3); font-size: 12px; margin-top: 4px; }
.form-hint  { color: var(--text-muted); font-size: 12px; margin-top: 4px; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.form-section {
  background: var(--bg-glass);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
}

.form-section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

thead tr {
  background: rgba(108,99,255,0.08);
}

thead th {
  padding: 14px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  white-space: nowrap;
  border-bottom: 1px solid var(--border);
}

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

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: rgba(108,99,255,0.04); }

tbody td {
  padding: 14px 16px;
  color: var(--text-primary);
  vertical-align: middle;
}

.table-avatar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.avatar img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

/* ── Badges / Pills ───────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.badge-primary   { background: rgba(108,99,255,0.2); color: #a78bfa; }
.badge-success   { background: rgba(16,185,129,0.2); color: #34d399; }
.badge-warning   { background: rgba(245,158,11,0.2); color: #fbbf24; }
.badge-danger    { background: rgba(239,68,68,0.2);  color: #f87171; }
.badge-info      { background: rgba(0,212,255,0.15); color: #67e8f9; }
.badge-secondary { background: rgba(255,255,255,0.06); color: var(--text-secondary); }
.badge-male      { background: rgba(99,179,237,0.2); color: #90cdf4; }
.badge-female    { background: rgba(246,135,179,0.2); color: #fbb6ce; }

/* ── Alerts ───────────────────────────────────────────────── */
.alert {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: 16px;
  border: 1px solid transparent;
}

.alert-success { background: rgba(16,185,129,0.1);  border-color: rgba(16,185,129,0.3);  color: #34d399; }
.alert-danger  { background: rgba(239,68,68,0.1);   border-color: rgba(239,68,68,0.3);   color: #f87171; }
.alert-warning { background: rgba(245,158,11,0.1);  border-color: rgba(245,158,11,0.3);  color: #fbbf24; }
.alert-info    { background: rgba(0,212,255,0.08);  border-color: rgba(0,212,255,0.25);  color: #67e8f9; }

.alert-close {
  background: none;
  border: none;
  color: currentColor;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
  margin-left: auto;
  padding: 0;
  opacity: 0.7;
}

.alert-close:hover { opacity: 1; }

/* ── Progress Bars ────────────────────────────────────────── */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: var(--gradient);
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ── Tabs ─────────────────────────────────────────────────── */
.tabs {
  display: flex;
  gap: 4px;
  background: var(--bg-input);
  border-radius: var(--radius-md);
  padding: 4px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
}

.tab {
  flex: 1;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-fast);
  text-align: center;
}

.tab.active {
  background: var(--gradient);
  color: #fff;
  box-shadow: var(--shadow-accent);
}

.tab:hover:not(.active) { color: var(--text-primary); background: var(--bg-glass); }

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ── Modal ────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(8px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.modal-overlay.open .modal { transform: scale(1) translateY(0); }

.modal-header {
  padding: 24px 24px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
}

.modal-close {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-glass);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.modal-close:hover { background: rgba(239,68,68,0.15); color: var(--accent-3); }

.modal-body { padding: 24px; }

.modal-footer {
  padding: 16px 24px;
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  border-top: 1px solid var(--border);
}

/* ── Dropdown ─────────────────────────────────────────────── */
.dropdown { position: relative; display: inline-block; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 6px;
  z-index: 300;
  opacity: 0;
  pointer-events: none;
  transform: translateY(-8px);
  transition: all 0.2s ease;
}

.dropdown-menu.open { opacity: 1; pointer-events: all; transform: translateY(0); }

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  text-decoration: none;
}

.dropdown-item:hover { background: rgba(108,99,255,0.1); color: var(--text-primary); }
.dropdown-item.danger:hover { background: rgba(239,68,68,0.1); color: var(--accent-3); }
.dropdown-divider { height: 1px; background: var(--border); margin: 4px 0; }

/* ── Charts ───────────────────────────────────────────────── */
.chart-container {
  position: relative;
  width: 100%;
}

.chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}

/* ── Calendar ─────────────────────────────────────────────── */
.calendar-3d {
  perspective: 1200px;
  transform-style: preserve-3d;
}

.calendar-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transform: rotateX(3deg);
  transition: var(--transition);
}

.calendar-card:hover { transform: rotateX(0deg); }

.calendar-header {
  background: var(--gradient);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.calendar-header h3 { color: #fff; font-size: 16px; font-weight: 700; }

.calendar-grid {
  padding: 16px;
}

.calendar-days-header {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
  margin-bottom: 8px;
}

.calendar-days-header span {
  text-align: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 4px 0;
  text-transform: uppercase;
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 2px;
}

.cal-day {
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  color: var(--text-secondary);
  position: relative;
}

.cal-day:hover { background: rgba(108,99,255,0.1); color: var(--text-primary); }
.cal-day.today { background: var(--gradient); color: #fff; font-weight: 700; box-shadow: var(--shadow-accent); }
.cal-day.has-event::after {
  content: '';
  position: absolute;
  bottom: 2px;
  width: 4px;
  height: 4px;
  background: var(--accent-5);
  border-radius: 50%;
}
.cal-day.other-month { opacity: 0.3; }
.cal-day.weekend { opacity: 0.35; cursor: default; pointer-events: none; }
.calendar-days-header .weekend-header { opacity: 0.35; }

/* ── Notification Panel ───────────────────────────────────── */
.notif-panel {
  position: fixed;
  top: var(--header-height);
  right: 0;
  width: 360px;
  height: calc(100vh - var(--header-height));
  background: var(--bg-card);
  border-left: 1px solid var(--border);
  z-index: 150;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
}

.notif-panel.open { transform: translateX(0); }

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

.notif-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.notif-item {
  display: flex;
  gap: 12px;
  padding: 14px;
  border-radius: var(--radius-md);
  margin-bottom: 6px;
  border: 1px solid var(--border-light);
  transition: var(--transition-fast);
  cursor: pointer;
}

.notif-item:hover { background: var(--bg-glass); }
.notif-item.unread { background: rgba(108,99,255,0.06); border-color: rgba(108,99,255,0.2); }

.notif-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.notif-body { flex: 1; }

.notif-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.notif-msg  { font-size: 12px; color: var(--text-secondary); line-height: 1.4; }
.notif-time { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

/* ── Attendance Grid ──────────────────────────────────────── */
.attendance-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(48px, 1fr));
  gap: 6px;
}

.att-cell {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
  border: 2px solid transparent;
}

.att-present  { background: rgba(16,185,129,0.2);  color: #34d399; border-color: rgba(16,185,129,0.4); }
.att-absent   { background: rgba(239,68,68,0.2);   color: #f87171; border-color: rgba(239,68,68,0.4); }
.att-late     { background: rgba(245,158,11,0.2);  color: #fbbf24; border-color: rgba(245,158,11,0.4); }
.att-excused  { background: rgba(0,212,255,0.15);  color: #67e8f9; border-color: rgba(0,212,255,0.3); }
.att-unknown  { background: var(--bg-glass); color: var(--text-muted); border-color: var(--border); }

.att-cell:hover { transform: scale(1.1); z-index: 1; }

/* ── Score Input Grid ─────────────────────────────────────── */
.score-table td input {
  width: 70px;
  text-align: center;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  font-size: 13px;
  color: var(--text-primary);
  outline: none;
}

.score-table td input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(108,99,255,0.15);
}

/* ── Payment Cards ────────────────────────────────────────── */
.payment-method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.payment-method-btn {
  background: var(--bg-glass);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}

.payment-method-btn.selected {
  border-color: var(--accent);
  background: rgba(108,99,255,0.1);
  box-shadow: 0 0 0 1px var(--accent);
}

.payment-method-btn:hover { border-color: rgba(108,99,255,0.5); }

.payment-method-icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.payment-method-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

/* ── Dark Mode Toggle ─────────────────────────────────────── */
.dark-toggle {
  position: relative;
  width: 44px;
  height: 24px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid var(--border);
  transition: var(--transition-fast);
}

.dark-toggle::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  transition: var(--transition);
  box-shadow: 0 0 6px rgba(108,99,255,0.5);
}

[data-theme="dark"] .dark-toggle::after { left: 3px; }
.dark-toggle::after { left: calc(100% - 19px); }

/* ── Skeleton Loader ──────────────────────────────────────── */
.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: skeleton-wave 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-wave {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ── Animated Counter ─────────────────────────────────────── */
.count-up { transition: color 0.3s; }

/* ═══════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-24px); }
  to   { opacity: 1; transform: translateX(0); }
}

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

@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@keyframes glow {
  0%,100% { box-shadow: 0 0 20px rgba(108,99,255,0.3); }
  50%      { box-shadow: 0 0 40px rgba(108,99,255,0.6); }
}

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

@keyframes orbit {
  from { transform: rotate(0deg) translateX(40px) rotate(0deg); }
  to   { transform: rotate(360deg) translateX(40px) rotate(-360deg); }
}

.animate-fade-up     { animation: fadeInUp 0.5s ease forwards; }
.animate-fade-left   { animation: fadeInLeft 0.5s ease forwards; }
.animate-scale-in    { animation: scaleIn 0.4s ease forwards; }
.animate-float       { animation: float 3s ease-in-out infinite; }
.animate-glow        { animation: glow 2s ease-in-out infinite; }

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ═══════════════════════════════════════════════════════════
   LOGIN PAGE
   ═══════════════════════════════════════════════════════════ */
.login-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--bg-primary);
  overflow: hidden;
}

.login-left {
  background: linear-gradient(135deg, #0a0a1f 0%, #1a0a3a 50%, #0a1a3a 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  position: relative;
  overflow: hidden;
}

.login-left::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(108,99,255,0.2) 0%, transparent 70%);
  top: -100px;
  left: -100px;
  animation: float 6s ease-in-out infinite;
}

.login-left::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0,212,255,0.1) 0%, transparent 70%);
  bottom: -100px;
  right: -100px;
  animation: float 8s ease-in-out infinite reverse;
}

.login-hero { position: relative; z-index: 1; max-width: 440px; }

.login-logo {
  width: 72px;
  height: 72px;
  background: var(--gradient);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 32px;
  box-shadow: 0 16px 48px rgba(108,99,255,0.4);
  animation: float 4s ease-in-out infinite, glow 3s ease-in-out infinite;
  font-family: 'Poppins', sans-serif;
}

.login-hero h1 {
  font-size: 40px;
  font-weight: 900;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 16px;
}

.login-hero h1 span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.login-hero p {
  font-size: 16px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 40px;
  line-height: 1.6;
}

.login-features { display: flex; flex-direction: column; gap: 14px; }

.login-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
}

.login-feature-icon {
  width: 36px;
  height: 36px;
  background: rgba(108,99,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

/* 3D Orbs background */
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
}

.orb-1 {
  width: 300px;
  height: 300px;
  background: rgba(108,99,255,0.3);
  top: 10%;
  right: 10%;
  animation: float 7s ease-in-out infinite;
}

.orb-2 {
  width: 200px;
  height: 200px;
  background: rgba(0,212,255,0.2);
  bottom: 20%;
  left: 20%;
  animation: float 5s ease-in-out infinite reverse;
}

.login-right {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 40px;
  background: var(--bg-secondary);
}

.login-form-wrapper {
  width: 100%;
  max-width: 400px;
  animation: fadeInUp 0.6s ease;
}

.login-form-header {
  text-align: center;
  margin-bottom: 36px;
}

.login-form-header h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 8px;
}

.login-form-header p { color: var(--text-secondary); font-size: 14px; }

.login-form { display: flex; flex-direction: column; gap: 16px; }

.login-input-group {
  position: relative;
}

.login-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  pointer-events: none;
}

.login-input {
  width: 100%;
  background: var(--bg-input);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 14px 14px 44px;
  font-size: 15px;
  color: var(--text-primary);
  outline: none;
  transition: var(--transition);
}

.login-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(108,99,255,0.15);
  background: var(--bg-card);
}

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

.login-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
}

.login-remember {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
}

.login-remember input { accent-color: var(--accent); }

.login-forgot { font-size: 13px; color: var(--accent-2); }

.login-btn {
  width: 100%;
  padding: 15px;
  background: var(--gradient);
  border: none;
  border-radius: var(--radius-md);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-accent);
  font-family: 'Poppins', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 8px;
}

.login-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 48px rgba(108,99,255,0.5);
}

.login-btn:active { transform: translateY(0); }

.login-demo {
  margin-top: 24px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.login-demo h4 {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.demo-credentials {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.demo-cred {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: var(--transition-fast);
}

.demo-cred:hover { border-color: var(--accent); }

.demo-cred-role {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
}

.demo-cred-email {
  font-size: 11px;
  color: var(--text-muted);
  font-family: monospace;
}

/* ── Mobile Overlay ───────────────────────────────────────── */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  z-index: 199;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.mobile-overlay.open { display: block; }

/* ═══════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════ */

/* ── Tablet / Small Laptop ────────────────────────────────── */
@media (max-width: 1024px) {
  .login-page { grid-template-columns: 1fr; }
  .login-left { display: none; }
  .login-right { min-height: 100vh; }

  .sidebar {
    transform: translateX(-100%);
    z-index: 250;
    box-shadow: none;
  }
  .sidebar.mobile-open {
    transform: translateX(0);
    box-shadow: var(--shadow-lg), 4px 0 40px rgba(0,0,0,0.5);
  }
  .main-content { margin-left: 0 !important; }
  .sidebar.collapsed ~ .main-content { margin-left: 0 !important; }

  .grid-3 { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: 1fr 1fr; }

  .notif-panel { width: min(360px, 100vw); }
}

/* ── Mobile Landscape / Small Tablet ─────────────────────── */
@media (max-width: 768px) {
  .page-body { padding: 16px; }
  .page-title h1 { font-size: 22px; }
  .page-title p  { font-size: 13px; }

  .stat-grid   { grid-template-columns: 1fr 1fr; }
  .chart-grid  { grid-template-columns: 1fr; }
  .form-grid   { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .payment-method-grid { grid-template-columns: 1fr 1fr; }

  .top-header { padding: 0 12px; gap: 8px; }
  .header-search { display: none; }
  .lang-selector { display: none; }
  .header-btn { padding: 8px; }

  .notif-panel { width: 100vw; }

  /* Sheet-style modals */
  .modal-overlay { padding: 0; align-items: flex-end; }
  .modal {
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    max-height: 92vh;
    max-width: 100%;
    width: 100%;
  }

  /* Reduce hover transforms on touch devices */
  .card:hover        { transform: none; }
  .stat-card:hover   { transform: translateY(-2px); box-shadow: var(--shadow-md); }
  .btn-primary:hover { transform: none; box-shadow: var(--shadow-accent); }
  .btn-danger:hover  { transform: none; }
  .btn-success:hover { transform: none; }
}

/* ── Mobile Portrait ──────────────────────────────────────── */
@media (max-width: 480px) {
  .page-body { padding: 12px; }
  .page-title h1 { font-size: 18px; }
  .page-title p  { font-size: 12px; }
  .breadcrumb    { font-size: 11px; }

  .stat-grid { grid-template-columns: 1fr; }
  .payment-method-grid { grid-template-columns: 1fr; }
  .tabs { flex-direction: column; }

  .top-header { padding: 0 10px; gap: 6px; }

  .card { padding: 16px; border-radius: var(--radius-md); }
  .stat-card { padding: 14px; }
  .stat-value { font-size: 26px; }

  .modal-body   { padding: 16px; }
  .modal-header { padding: 16px 16px 12px; }
  .modal-footer { padding: 12px 16px; gap: 8px; }

  /* Make buttons easier to tap */
  .btn-sm { padding: 9px 14px; min-height: 36px; }
  .btn-icon { padding: 10px; }
}

/* ═══════════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════════ */
.flex { display: flex; }
.flex-col { display: flex; flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: 8px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 11px; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }
.opacity-0 { opacity: 0; }
.hidden { display: none !important; }
.overflow-hidden { overflow: hidden; }
.relative { position: relative; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

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

/* Print */
@media print {
  .sidebar, .top-header, .btn, .modal-overlay { display: none !important; }
  .main-content { margin-left: 0; }
  body { background: #fff; color: #000; }
}

/* ═══════════════════════════════════════════════════════════
   PREMIUM UI ENHANCEMENTS
   ═══════════════════════════════════════════════════════════ */

/* ── Aurora background on dark mode ── */
[data-theme="dark"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 20% 10%, rgba(108,99,255,0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 90%, rgba(0,212,255,0.05) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(16,185,129,0.03) 0%, transparent 70%);
  pointer-events: none;
}

/* ── Animated gradient border on active stat cards ── */
.stat-card.highlight {
  position: relative;
}
.stat-card.highlight::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--gradient);
  z-index: -1;
  opacity: 0.5;
  filter: blur(8px);
  transition: opacity .3s;
}
.stat-card.highlight:hover::before { opacity: 0.8; }

/* ── Glowing sidebar logo ── */
.sidebar-logo {
  position: relative;
}
.sidebar-logo::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 16px;
  background: var(--gradient);
  opacity: 0;
  z-index: -1;
  filter: blur(12px);
  transition: opacity .3s;
}
.sidebar:not(.collapsed) .sidebar-logo:hover::after { opacity: 0.6; }

/* ── Enhanced sidebar active state ── */
.nav-item.active {
  background: linear-gradient(135deg, rgba(108,99,255,0.25), rgba(0,212,255,0.12)) !important;
  box-shadow: inset 0 0 0 1px rgba(108,99,255,0.35), 0 4px 16px rgba(108,99,255,0.15) !important;
}

/* ── Top header glass effect upgrade ── */
[data-theme="dark"] .top-header {
  background: rgba(10,10,25,0.8);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom-color: rgba(108,99,255,0.12);
}

/* ── Card with neon top border on hover ── */
.card-neon {
  transition: var(--transition);
}
.card-neon::after {
  content: '';
  position: absolute;
  top: 0; left: 10%; right: 10%;
  height: 2px;
  background: var(--gradient);
  border-radius: var(--radius-full);
  opacity: 0;
  transition: opacity .4s ease, left .4s ease, right .4s ease;
}
.card-neon:hover::after {
  opacity: 1;
  left: 0; right: 0;
}

/* ── Gradient stat value ── */
.stat-value-gradient {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Glowing button ── */
.btn-glow {
  animation: btn-glow-pulse 3s ease-in-out infinite;
}
@keyframes btn-glow-pulse {
  0%, 100% { box-shadow: var(--shadow-accent); }
  50%       { box-shadow: 0 16px 48px rgba(108,99,255,0.6); }
}

/* ── Enhanced table rows ── */
tbody tr:hover {
  background: rgba(108,99,255,0.06) !important;
  box-shadow: inset 3px 0 0 var(--accent);
}

/* ── Floating label on form focus ── */
.form-group.floating {
  position: relative;
  padding-top: 12px;
}
.form-group.floating .form-label {
  position: absolute;
  top: 22px; left: 14px;
  font-size: 14px;
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  color: var(--text-muted);
  pointer-events: none;
  transition: all .2s ease;
}
.form-group.floating .form-control:focus ~ .form-label,
.form-group.floating .form-control:not(:placeholder-shown) ~ .form-label {
  top: 0; left: 0;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--accent);
}

/* ── Shimmer loading skeleton upgrade ── */
.skeleton-line {
  height: 14px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
}
.skeleton-line:last-child { width: 70%; }

/* ── Pill toggle ── */
.pill-toggle {
  display: inline-flex;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}
.pill-toggle button {
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 12px; font-weight: 600;
  background: none; border: none;
  color: var(--text-muted);
  cursor: pointer; transition: all .2s;
}
.pill-toggle button.active {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 2px 12px rgba(108,99,255,0.35);
}

/* ── Status dot ── */
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}
.status-dot.online  { background: var(--accent-4); box-shadow: 0 0 6px rgba(16,185,129,.6); }
.status-dot.offline { background: var(--accent-3); }
.status-dot.away    { background: var(--accent-5); }

/* ── Tooltip ── */
[data-tip] {
  position: relative;
}
[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%; transform: translateX(-50%);
  background: rgba(0,0,0,.85);
  color: #fff; font-size: 11px; font-weight: 600;
  padding: 5px 10px; border-radius: var(--radius-sm);
  white-space: nowrap; pointer-events: none;
  opacity: 0; transition: opacity .2s;
  z-index: 1000;
}
[data-tip]:hover::after { opacity: 1; }

/* ── Glassmorphism card variant ── */
.card-glass {
  background: rgba(255,255,255,0.04) !important;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-color: rgba(255,255,255,0.08) !important;
}
[data-theme="dark"] .card-glass {
  background: rgba(255,255,255,0.03) !important;
}

/* ── Page body subtle grid texture ── */
[data-theme="dark"] .page-body {
  background-image:
    linear-gradient(rgba(108,99,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(108,99,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* ── Neon outline badge ── */
.badge-neon {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  box-shadow: 0 0 8px rgba(108,99,255,.3), inset 0 0 8px rgba(108,99,255,.05);
}

/* ── Smooth page transitions ── */
.page-body > * {
  animation: page-entry .4s ease both;
}
@keyframes page-entry {
  from { opacity:0; transform: translateY(12px); }
  to   { opacity:1; transform: translateY(0); }
}

/* ── Chart card header tab style ── */
.chart-tab-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.chart-tab-btns {
  display: flex; gap: 4px;
  background: var(--bg-input);
  border-radius: var(--radius-full);
  padding: 3px; border: 1px solid var(--border);
}
.chart-tab-btn {
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 11px; font-weight: 600;
  background: none; border: none;
  color: var(--text-muted); cursor: pointer;
  transition: all .2s;
}
.chart-tab-btn.active {
  background: var(--gradient); color: #fff;
  box-shadow: 0 2px 10px rgba(108,99,255,.3);
}