/* ============================================
   Virtual Photobooth - Wedding Edition
   Global Design System
   Theme: Rose Gold & Blush Pink
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Outfit:wght@300;400;500;600;700&family=Great+Vibes&display=swap');

/* ============================================
   CSS Variables (Design Tokens)
   ============================================ */
:root {
  /* Colors */
  --color-primary: #B76E79;
  --color-primary-light: #D4A5A5;
  --color-primary-dark: #8B5A5A;
  --color-accent: #F0C9CF;
  --color-accent-light: #FDE8EC;
  --color-accent-pale: #FFF5F7;
  --color-gold: #D4AF37;
  --color-gold-light: #F5E6B8;
  --color-gold-dark: #A68B28;
  --color-bg-dark: #1A1A2E;
  --color-bg-darker: #0F0F1E;
  --color-bg-card: #252540;
  --color-bg-card-hover: #2D2D50;
  --color-text: #FFFFFF;
  --color-text-secondary: #E0D0D5;
  --color-text-muted: #9090A8;
  --color-success: #4CAF50;
  --color-error: #E74C3C;
  --color-warning: #F39C12;
  --color-overlay: rgba(26, 26, 46, 0.85);

  /* Typography */
  --font-display: 'Playfair Display', Georgia, serif;
  --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-script: 'Great Vibes', cursive;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(183, 110, 121, 0.4);
  --shadow-gold-glow: 0 0 20px rgba(212, 175, 55, 0.3);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-spring: 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal-backdrop: 900;
  --z-modal: 1000;
  --z-toast: 1100;
  --z-tooltip: 1200;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg-dark);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-gold);
}

input, textarea, select, button {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--wide {
  max-width: 1200px;
}

.text-center { text-align: center; }
.text-gold { color: var(--color-gold); }
.text-rose { color: var(--color-primary); }
.text-muted { color: var(--color-text-muted); }

.font-display { font-family: var(--font-display); }
.font-script { font-family: var(--font-script); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  min-height: 48px;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::after {
  opacity: 1;
}

.btn:active {
  transform: scale(0.97);
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
  box-shadow: 0 0 30px rgba(183, 110, 121, 0.6);
  transform: translateY(-2px);
}

.btn--gold {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-dark) 100%);
  color: var(--color-bg-dark);
  box-shadow: var(--shadow-gold-glow);
}

.btn--gold:hover {
  box-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary-light);
}

.btn--outline:hover {
  background: rgba(183, 110, 121, 0.15);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-text);
  backdrop-filter: blur(10px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  min-height: 36px;
}

.btn--lg {
  padding: 18px 36px;
  font-size: 1.125rem;
  border-radius: var(--radius-xl);
}

.btn--full {
  width: 100%;
}

.btn--icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn--danger {
  background: linear-gradient(135deg, var(--color-error) 0%, #C0392B 100%);
  color: white;
}

.btn--success {
  background: linear-gradient(135deg, var(--color-success) 0%, #388E3C 100%);
  color: white;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Ripple Effect */
.btn .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: scale(0);
  animation: ripple 0.6s linear;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ============================================
   Form Elements
   ============================================ */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 14px 18px;
  background: rgba(255, 255, 255, 0.06);
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-size: 1rem;
  transition: all var(--transition-normal);
  outline: none;
  -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  background: rgba(183, 110, 121, 0.08);
  box-shadow: 0 0 0 3px rgba(183, 110, 121, 0.15);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition-normal);
}

.card:hover {
  background: var(--color-bg-card-hover);
  border-color: rgba(183, 110, 121, 0.2);
}

.card--glass {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   Toast Notifications
   ============================================ */
.toast-container {
  position: fixed;
  top: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  width: calc(100% - 32px);
  max-width: 420px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: 14px 18px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  animation: toastIn 0.4s var(--transition-spring) forwards;
  pointer-events: auto;
  font-size: 0.9rem;
  font-weight: 500;
}

.toast--success {
  background: rgba(76, 175, 80, 0.9);
  border: 1px solid rgba(76, 175, 80, 0.5);
}

.toast--error {
  background: rgba(231, 76, 60, 0.9);
  border: 1px solid rgba(231, 76, 60, 0.5);
}

.toast--info {
  background: rgba(183, 110, 121, 0.9);
  border: 1px solid rgba(183, 110, 121, 0.5);
}

.toast.removing {
  animation: toastOut 0.3s ease forwards;
}

@keyframes toastIn {
  from { transform: translateY(-100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

@keyframes toastOut {
  from { transform: translateY(0); opacity: 1; }
  to { transform: translateY(-100%); opacity: 0; }
}

/* ============================================
   Modal / Lightbox
   ============================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: var(--z-modal-backdrop);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.9);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-spring);
  width: calc(100% - 32px);
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal.active {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, -50%) scale(1);
}

.modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background: var(--color-error);
  transform: rotate(90deg);
}

/* ============================================
   Loading Spinner
   ============================================ */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.spinner--sm {
  width: 20px;
  height: 20px;
  border-width: 2px;
}

.spinner--gold {
  border-top-color: var(--color-gold);
}

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

.loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* ============================================
   Decorative Elements
   ============================================ */
.ornament {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding: var(--space-md) 0;
}

.ornament::before,
.ornament::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.ornament span {
  color: var(--color-gold);
  font-size: 1.2rem;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.3), transparent);
  margin: var(--space-xl) 0;
}

/* ============================================
   Animations - Fade In
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-up { animation: fadeInUp 0.6s ease forwards; }
.fade-in-down { animation: fadeInDown 0.6s ease forwards; }
.fade-in-left { animation: fadeInLeft 0.6s ease forwards; }
.fade-in-right { animation: fadeInRight 0.6s ease forwards; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}

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

/* Scale In */
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1); }
}

/* Pulse */
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Float */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Shimmer */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(90deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
  background-size: 200% 100%;
  animation: shimmer 2s linear infinite;
}

/* Glow Pulse */
@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 10px rgba(183, 110, 121, 0.3); }
  50% { box-shadow: 0 0 25px rgba(183, 110, 121, 0.6); }
}

/* ============================================
   Skeleton Loading
   ============================================ */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg-card) 25%, var(--color-bg-card-hover) 50%, var(--color-bg-card) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s linear infinite;
  border-radius: var(--radius-md);
}

/* ============================================
   Badge
   ============================================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge--gold {
  background: rgba(212, 175, 55, 0.15);
  color: var(--color-gold);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.badge--rose {
  background: rgba(183, 110, 121, 0.15);
  color: var(--color-primary-light);
  border: 1px solid rgba(183, 110, 121, 0.3);
}

.badge--success {
  background: rgba(76, 175, 80, 0.15);
  color: var(--color-success);
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.badge--danger {
  background: rgba(231, 76, 60, 0.15);
  color: var(--color-error);
  border: 1px solid rgba(231, 76, 60, 0.3);
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-darker);
}

::-webkit-scrollbar-thumb {
  background: var(--color-primary-dark);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ============================================
   Mobile Responsive Base
   ============================================ */
@media (max-width: 480px) {
  :root {
    font-size: 15px;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }
}

/* ============================================
   Page Transition
   ============================================ */
.page-enter {
  animation: pageEnter 0.5s ease forwards;
}

@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Floating Background Music Button
   ============================================ */
.music-btn {
  position: fixed;
  bottom: 24px;
  left: 20px;
  z-index: var(--z-sticky);
  background: rgba(26, 26, 46, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: 50px;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: white;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  transition: all var(--transition-normal);
  user-select: none;
}

.music-btn:hover {
  transform: scale(1.06);
  border-color: var(--color-gold);
  background: rgba(45, 45, 75, 0.9);
}

.music-btn .music-icon {
  font-size: 1.1rem;
}

.music-btn .music-waves {
  display: flex;
  align-items: flex-end;
  gap: 2px;
  height: 14px;
}

.music-btn .music-waves span {
  width: 3px;
  height: 4px;
  background: var(--color-gold);
  border-radius: 2px;
  transition: height 0.2s ease;
}

.music-btn.playing .music-waves span:nth-child(1) {
  animation: waveAnim 0.8s ease-in-out infinite alternate;
}
.music-btn.playing .music-waves span:nth-child(2) {
  animation: waveAnim 1.2s ease-in-out 0.2s infinite alternate;
}
.music-btn.playing .music-waves span:nth-child(3) {
  animation: waveAnim 0.9s ease-in-out 0.4s infinite alternate;
}

@keyframes waveAnim {
  0% { height: 3px; }
  100% { height: 14px; }
}

/* ============================================
   Confetti Canvas (global)
   ============================================ */
#confetti-canvas {
  position: fixed;
  inset: 0;
  z-index: var(--z-tooltip);
  pointer-events: none;
}