:root {
  /* Core Colors */
  --color-primary: #ff385c;
  --color-primary-gradient: linear-gradient(135deg, #ff385c 0%, #e00b41 100%);
  --color-primary-active: #e00b41;
  --color-primary-disabled: #ffd1da;
  --color-canvas: #f4f6f9;
  --color-surface: rgba(255, 255, 255, 0.85);
  --color-surface-solid: #ffffff;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-ink: #1a1a24;
  --color-body: #4a4a5a;
  --color-muted: #8b8b9e;
  --color-on-primary: #ffffff;

  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-base: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-section: 64px;

  /* Border Radius */
  --rounded-sm: 8px;
  --rounded-md: 16px;
  --rounded-lg: 24px;
  --rounded-full: 9999px;

  /* Shadows */
  --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 10px 30px rgba(255, 56, 92, 0.15);
  --shadow-card: 0 8px 32px rgba(31, 38, 135, 0.07);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--color-canvas);
  background-image: 
    radial-gradient(at 0% 0%, hsla(349, 100%, 88%, 0.4) 0px, transparent 50%),
    radial-gradient(at 100% 0%, hsla(240, 100%, 94%, 0.4) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--color-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  color: var(--color-ink);
  letter-spacing: -0.02em;
}

h1 { font-size: 2.2rem; font-weight: 700; margin-bottom: 0.5rem; }
h2 { font-size: 1.8rem; font-weight: 600; }
h3 { font-size: 1.4rem; font-weight: 600; }
p { margin-top: 0; }

/* Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-base);
}

/* Glassmorphism Cards */
.card {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: var(--rounded-lg);
  box-shadow: var(--shadow-card);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(31, 38, 135, 0.1);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: var(--rounded-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--color-primary-gradient);
  color: var(--color-on-primary);
  box-shadow: 0 4px 15px rgba(255, 56, 92, 0.3);
}

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

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

.btn-secondary {
  background-color: var(--color-surface-solid);
  color: var(--color-ink);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-soft);
}

.btn-secondary:hover {
  background-color: #f8f9fa;
  border-color: #d1d5db;
  transform: translateY(-2px);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--rounded-md);
  border: 1px solid var(--color-border);
  font-size: 15px;
  font-family: inherit;
  background: rgba(255, 255, 255, 0.9);
  box-sizing: border-box;
  transition: all 0.3s ease;
  color: var(--color-ink);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #ffffff;
  box-shadow: 0 0 0 4px rgba(255, 56, 92, 0.1);
}

/* Modern Table */
.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: var(--spacing-md);
}

.table th, .table td {
  padding: 16px var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.table th {
  font-weight: 600;
  font-size: 12px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border);
}

.table tbody tr {
  transition: all 0.2s ease;
}

.table tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.6);
  transform: scale(1.005);
}

/* Status Badges */
.badge {
  padding: 6px 12px;
  border-radius: var(--rounded-full);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-block;
}

.badge-pending {
  background-color: #f1f3f5;
  color: var(--color-muted);
}

.badge-attended {
  background-color: #e3fcef;
  color: #0ca678;
}

/* Avatars */
.avatar {
  width: 48px;
  height: 48px;
  border-radius: var(--rounded-md);
  object-fit: cover;
  background-color: var(--color-canvas);
  border: 2px solid #fff;
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease;
}
.avatar:hover {
  transform: scale(1.1) rotate(5deg);
}

/* Modals */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.3s ease forwards;
}

.modal-content {
  background: var(--color-surface-solid);
  padding: var(--spacing-xl);
  border-radius: var(--rounded-lg);
  width: 90%;
  max-width: 420px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  text-align: center;
}

.qr-container {
  background: #fff;
  padding: 24px;
  border-radius: var(--rounded-md);
  display: inline-block;
  margin: var(--spacing-md) 0;
  box-shadow: var(--shadow-soft);
}

.token-display {
  font-family: 'Inter', monospace;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--color-primary);
  margin: var(--spacing-md) 0;
  background: #fff0f2;
  padding: 12px;
  border-radius: var(--rounded-md);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 56, 92, 0.4); }
  70% { box-shadow: 0 0 0 15px rgba(255, 56, 92, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 56, 92, 0); }
}

/* Check-in Specific */
.checkin-container {
  width: 90%;
  max-width: 420px;
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  padding: 32px 24px;
  border-radius: var(--rounded-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255,255,255,0.6);
  margin: 0 auto;
  animation: slideUp 0.5s ease;
}

.camera-box {
  width: 100%;
  height: 320px;
  background: #000;
  border-radius: var(--rounded-md);
  overflow: hidden;
  position: relative;
  margin-bottom: var(--spacing-lg);
  box-shadow: inset 0 0 20px rgba(0,0,0,0.5);
}

.camera-box.active {
  animation: pulse 2s infinite;
}

/* Utilities */
.text-muted { color: var(--color-muted); }