/* Web Font Import */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* Color Variables */
:root {
  --bg-primary: #0a0c1a;
  --bg-secondary: rgba(18, 22, 47, 0.7);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-active: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.07);
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --accent-cyan: #00f2fe;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-yellow: #f59e0b;
  --font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --shadow-glow: 0 0 20px rgba(0, 242, 254, 0.15);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: rgba(255, 255, 255, 0.8);
  --bg-glass: rgba(0, 0, 0, 0.02);
  --bg-glass-active: rgba(0, 0, 0, 0.05);
  --border-glass: rgba(0, 0, 0, 0.08);
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent-cyan: #0d9488;
  --accent-blue: #2563eb;
  --accent-purple: #7c3aed;
  --accent-green: #059669;
  --accent-red: #dc2626;
  --accent-yellow: #d97706;
  --shadow-glow: 0 0 20px rgba(13, 148, 136, 0.1);
  --shadow-card: 0 8px 32px 0 rgba(15, 23, 42, 0.08);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.5s ease;
}

/* Animated Mesh Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  background: radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(0, 242, 254, 0.08) 0%, transparent 40%);
  pointer-events: none;
}

/* Typography & Layout */
a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  text-shadow: 0 0 8px rgba(0, 242, 254, 0.4);
}

h1, h2, h3, h4 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

/* Navigation / Header */
header {
  backdrop-filter: blur(12px);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-glass);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.logo {
  font-weight: 800;
  font-size: 1.5rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo span {
  font-weight: 300;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.theme-toggle, .logout-btn {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  transition: var(--transition);
}

.theme-toggle:hover, .logout-btn:hover {
  background: var(--bg-glass-active);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

/* Button UI */
.btn {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  border: none;
  color: #000;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
  background: var(--bg-glass-active);
  border-color: var(--text-secondary);
}

.btn-danger {
  background: linear-gradient(135deg, var(--accent-red), #b91c1c);
  color: white;
}

/* Glass Cards */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  opacity: 0;
  transition: var(--transition);
}

.card:hover::before {
  opacity: 1;
}

/* Forms styling */
.form-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.form-control {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
  background: var(--bg-glass-active);
}

/* Fix dropdown options visibility in dark/light mode */
select option {
  background-color: #12162e;
  color: #ffffff;
}

[data-theme="light"] select option {
  background-color: #ffffff;
  color: #0f172a;
}

/* Login Portal Layout */
.auth-wrapper {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.auth-card {
  width: 100%;
  max-width: 450px;
}

.auth-header {
  text-align: center;
  margin-bottom: 2rem;
}

.auth-header h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.auth-header p {
  color: var(--text-secondary);
}

/* Attendance Dashboard Layout */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

@media (max-width: 968px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* Live Clock Style */
.clock-card {
  text-align: center;
  padding: 3rem 2rem;
}

.live-time {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--text-primary), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-feature-settings: "tnum";
  letter-spacing: 0.05em;
  margin: 1rem 0;
}

.live-date {
  color: var(--accent-cyan);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Signature & Camera Controls */
.media-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 600px) {
  .media-container {
    grid-template-columns: 1fr;
  }
}

.media-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: 12px;
  padding: 1rem;
  position: relative;
  overflow: hidden;
}

.media-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-secondary);
  align-self: flex-start;
}

.webcam-viewport {
  width: 100%;
  aspect-ratio: 4/3;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.webcam-viewport video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.snapshot-preview {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
  z-index: 5;
}

.signature-canvas {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px dashed var(--border-glass);
  cursor: crosshair;
}

/* Table Design */
.table-container {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-glass);
  margin-top: 1.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background: var(--bg-glass-active);
  color: var(--text-primary);
  font-weight: 600;
  padding: 1rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-glass);
}

td {
  padding: 1rem;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--border-glass);
  color: var(--text-secondary);
}

tr:hover td {
  background: rgba(255, 255, 255, 0.01);
  color: var(--text-primary);
}

/* Badges */
.badge {
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  display: inline-block;
  text-transform: uppercase;
}

.badge-present {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-green);
}

.badge-late {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-yellow);
}

.badge-absent, .badge-rejected {
  background: rgba(239, 68, 68, 0.15);
  color: var(--accent-red);
}

.badge-pending {
  background: rgba(59, 130, 246, 0.15);
  color: var(--accent-blue);
}

/* Admin Dashboard Elements */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  border-left: 4px solid var(--accent-blue);
}

.stat-card.cyan { border-left-color: var(--accent-cyan); }
.stat-card.green { border-left-color: var(--accent-green); }
.stat-card.yellow { border-left-color: var(--accent-yellow); }

.stat-label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.stat-val {
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
}

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

.modal-card {
  width: 90%;
  max-width: 600px;
  background: var(--bg-primary);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
}

.modal-close:hover {
  color: var(--accent-red);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-glass);
  margin-bottom: 2rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.tab-btn.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Filters UI */
.filters-panel {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)) auto;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .filters-panel {
    grid-template-columns: 1fr;
  }
}

/* Utility classes */
.flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 1rem; }
.gap-05 { gap: 0.5rem; }
.mt-1 { margin-top: 1rem; }
.mb-1 { margin-bottom: 1rem; }
.text-center { text-align: center; }
.w-full { width: 100%; }

/* Alerts / Notifications */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-left: 4px solid var(--accent-cyan);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  box-shadow: var(--shadow-card);
  z-index: 2000;
  transform: translateY(150%);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toast.active {
  transform: translateY(0);
}

.toast.success { border-left-color: var(--accent-green); }
.toast.error { border-left-color: var(--accent-red); }