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

:root {
  /* HSL tailored colors */
  --bg-primary: #0f172a; /* depth dark blue */
  --bg-secondary: #1e293b;
  --bg-glass: rgba(30, 41, 59, 0.7);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-primary: #3b82f6;
  --accent-glow: rgba(59, 130, 246, 0.5);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border-color: rgba(255, 255, 255, 0.1);
  --font-family: 'Outfit', sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(59, 130, 246, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 2rem;
}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  background: linear-gradient(to right, #60a5fa, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.05);
}

/* Glassmorphism Card */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-box {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.stat-box::after {
  content: '';
  position: absolute;
  top: 0; right: 0; width: 100px; height: 100px;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, -30%);
}

.stat-title {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 600;
}

.stat-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
}

.stat-value.success { color: var(--success); text-shadow: 0 0 20px rgba(16, 185, 129, 0.4); }
.stat-value.warning { color: var(--warning); text-shadow: 0 0 20px rgba(245, 158, 11, 0.4); }

/* Buttons */
.btn {
  background: var(--accent-primary);
  color: #fff;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 14px var(--accent-glow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn:hover {
  background: #2563eb;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--border-color);
  box-shadow: none;
  color: var(--text-main);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  box-shadow: none;
}

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

.table-container {
  overflow-x: auto;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

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

th, td {
  padding: 1.2rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

th {
  background: rgba(0, 0, 0, 0.2);
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.badge {
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  text-transform: capitalize;
}

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

.badge.attended {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* QR Code Display in Table */
.qr-thumb {
  width: 40px;
  height: 40px;
  background: white;
  padding: 2px;
  border-radius: 4px;
  cursor: pointer;
  transition: transform 0.2s;
}
.qr-thumb:hover {
  transform: scale(1.5);
  z-index: 10;
  position: relative;
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 100;
}

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

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  width: 100%;
  max-width: 450px;
  padding: 2.5rem;
  transform: translateY(30px) scale(0.95);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
  transition: color 0.2s;
}

.close-btn:hover {
  color: var(--text-main);
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-control {
  width: 100%;
  padding: 1rem 1.2rem;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  color: var(--text-main);
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
  background: rgba(0, 0, 0, 0.5);
}

.form-actions {
  margin-top: 2rem;
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

/* Scanner specific */
.scanner-container {
  max-width: 600px;
  margin: 0 auto;
}

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

#reader {
  width: 100%;
  border-radius: 20px;
  overflow: hidden;
  border: 4px solid var(--bg-secondary);
  background: #000;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

#reader button {
  background: var(--accent-primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--font-family);
  margin: 10px;
}

.scan-status {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  color: var(--text-muted);
  text-align: center;
}

/* Welcome Overlay */
.welcome-overlay {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  opacity: 0;
  pointer-events: none;
  transform: scale(0.9);
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.welcome-overlay.active {
  opacity: 1;
  pointer-events: all;
  transform: scale(1);
}

.welcome-icon {
  font-size: 5rem;
  margin-bottom: 1rem;
  animation: bounce 2s infinite;
}

.welcome-text {
  font-size: 4.5rem;
  font-weight: 800;
  text-align: center;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
  margin-bottom: 0.5rem;
}

.welcome-subtext {
  font-size: 1.5rem;
  opacity: 0.9;
  font-weight: 500;
}

/* Spinner */
.loader {
  border: 3px solid rgba(255,255,255,0.1);
  border-top: 3px solid var(--accent-primary);
  border-radius: 50%;
  width: 24px;
  height: 24px;
  animation: spin 1s linear infinite;
  display: inline-block;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}
.empty-state p {
  margin-top: 0.5rem;
}