/* ========================
   UX ENHANCEMENTS 2025
   Modern Professional UI
   ======================== */

/* === Improved Typography Scale === */
:root {
  /* Enhanced spacing with better rhythm */
  --space-xxs: 0.25rem;  /* 4px */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 0.75rem;   /* 12px */
  --space-md: 1rem;      /* 16px */
  --space-lg: 1.5rem;    /* 24px */
  --space-xl: 2rem;      /* 32px */
  --space-2xl: 3rem;     /* 48px */
  --space-3xl: 4rem;     /* 64px */
  --space-4xl: 6rem;     /* 96px */

  /* Enhanced animations with better easing */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-in-out-circ: cubic-bezier(0.85, 0, 0.15, 1);
  --ease-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Better shadow system */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.25);
  --shadow-sm: 0 2px 4px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 8px 0 rgba(0, 0, 0, 0.35), 0 2px 4px 0 rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 8px 16px 0 rgba(0, 0, 0, 0.4), 0 4px 8px 0 rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 16px 32px 0 rgba(0, 0, 0, 0.45), 0 8px 16px 0 rgba(0, 0, 0, 0.35);
  --shadow-glow-strong: 0 0 60px rgba(212, 175, 55, 0.25), 0 0 30px rgba(212, 175, 55, 0.15);

  /* Interactive states */
  --focus-ring: 0 0 0 3px rgba(212, 175, 55, 0.3);
  --focus-ring-inset: inset 0 0 0 2px rgba(212, 175, 55, 0.5);
}

/* === Smooth Scroll Improvements === */
html {
  scroll-padding-top: 80px; /* Better scroll anchor positioning */
}

/* === Better Focus Styles (Accessibility++) === */
*:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 4px;
  transition: box-shadow 200ms var(--ease-out-quart);
}

button:focus-visible,
.btn:focus-visible {
  box-shadow: var(--focus-ring), var(--shadow-md);
  transform: translateY(-1px);
}

/* === Improved Button Styles === */
.btn {
  position: relative;
  overflow: hidden;
  transform: translateZ(0); /* GPU acceleration */
  will-change: transform, box-shadow;
  transition: all 250ms var(--ease-out-quart);
  letter-spacing: 0.025em; /* Better readability */
  font-weight: 500;
}

/* Ripple effect on click */
.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s var(--ease-out-expo), height 0.6s var(--ease-out-expo), opacity 0.6s;
  opacity: 0;
  pointer-events: none;
}

.btn:active::before {
  width: 300px;
  height: 300px;
  opacity: 1;
  transition: 0s;
}

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

.btn:active {
  transform: translateY(0);
  transition-duration: 100ms;
}

.btn.primary {
  box-shadow: var(--shadow-md), 0 0 20px rgba(212, 175, 55, 0.2);
}

.btn.primary:hover {
  box-shadow: var(--shadow-lg), var(--shadow-glow-strong);
  filter: brightness(1.1);
}

/* === Enhanced Cards with Better Hover === */
.card {
  transform: translateZ(0);
  will-change: transform, box-shadow;
  transition: all 350ms var(--ease-out-quart);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.card.glass {
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
}

/* === Event Card Improvements === */
.event-card {
  position: relative;
  cursor: pointer;
  border: 1px solid var(--border-subtle);
  transition: all 300ms var(--ease-out-quart);
}

.event-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.05) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 300ms var(--ease-out-quart);
  pointer-events: none;
}

.event-card:hover::after {
  opacity: 1;
}

.event-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-lg), 0 0 30px rgba(212, 175, 55, 0.15);
  transform: translateY(-3px) scale(1.005);
}

/* Staggered animation for event lists */
.event-card {
  animation: fadeInUp 0.5s var(--ease-out-expo) backwards;
}

.event-card:nth-child(1) { animation-delay: 0ms; }
.event-card:nth-child(2) { animation-delay: 50ms; }
.event-card:nth-child(3) { animation-delay: 100ms; }
.event-card:nth-child(4) { animation-delay: 150ms; }
.event-card:nth-child(5) { animation-delay: 200ms; }
.event-card:nth-child(n+6) { animation-delay: 250ms; }

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

/* === Filter Chips Enhancement === */
.filter-chip {
  transition: all 250ms var(--ease-out-quart);
  position: relative;
}

.filter-chip::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--gradient-gold);
  opacity: 0;
  transition: opacity 250ms var(--ease-out-quart);
  z-index: -1;
}

.filter-chip:hover::before {
  opacity: 0.15;
}

.filter-chip.active::before {
  opacity: 1;
}

.filter-chip:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: var(--shadow-md);
}

/* === Loading States === */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.skeleton {
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.03) 0%,
    rgba(255, 255, 255, 0.08) 50%,
    rgba(255, 255, 255, 0.03) 100%
  );
  background-size: 1000px 100%;
  animation: shimmer 2s infinite linear;
  border-radius: 8px;
}

/* === Improved Tooltips === */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  padding: 6px 12px;
  background: rgba(20, 20, 25, 0.95);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  white-space: nowrap;
  border-radius: 6px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 250ms var(--ease-out-quart);
  z-index: 1000;
  backdrop-filter: blur(10px);
}

[data-tooltip]::after {
  content: '';
  position: absolute;
  bottom: calc(100% + 2px);
  left: 50%;
  transform: translateX(-50%);
  border: 6px solid transparent;
  border-top-color: rgba(20, 20, 25, 0.95);
  opacity: 0;
  transition: all 250ms var(--ease-out-quart);
  z-index: 1000;
}

[data-tooltip]:hover::before,
[data-tooltip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* === Improved Scrollbar === */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-gold-dark) 0%, var(--accent-gold) 100%);
  border-radius: 10px;
  border: 2px solid var(--bg-secondary);
  transition: background 250ms ease;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.4);
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--accent-gold) var(--bg-secondary);
}

/* === Better Selection === */
::selection {
  background: rgba(212, 175, 55, 0.3);
  color: var(--text-primary);
}

::-moz-selection {
  background: rgba(212, 175, 55, 0.3);
  color: var(--text-primary);
}

/* === Smooth Gradient Text === */
.gradient-text {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.gradient-text::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  z-index: -1;
  filter: blur(20px);
  opacity: 0.5;
}

/* === Loading Spinner === */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(212, 175, 55, 0.2);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* === Micro-interactions for Stats === */
.stat-value {
  display: inline-block;
  transition: all 400ms var(--ease-spring);
}

.stat-item:hover .stat-value {
  transform: scale(1.15);
  color: var(--accent-gold);
  text-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
}

/* === Improved Poster Interactions === */
.poster-frame {
  transition: all 400ms var(--ease-out-quart);
  position: relative;
}

.poster-frame::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  background: var(--gradient-gold);
  opacity: 0;
  transition: opacity 400ms var(--ease-out-quart);
  z-index: -1;
  filter: blur(10px);
}

.poster-frame:hover::before {
  opacity: 0.6;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

.poster-overlay {
  transition: all 350ms var(--ease-out-quart);
}

.poster-link:hover .poster-overlay {
  backdrop-filter: blur(8px);
}

.poster-zoom {
  transform: scale(0.9);
  opacity: 0;
  transition: all 350ms var(--ease-spring);
  display: inline-block;
}

.poster-link:hover .poster-zoom {
  transform: scale(1);
  opacity: 1;
}

/* === Hero Section Enhancement === */
.hero-section {
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 200%;
  background: radial-gradient(ellipse, rgba(212, 175, 55, 0.08) 0%, transparent 70%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 1s ease;
}

.hero-section:hover::before {
  opacity: 1;
}

/* === Next Event Card Enhancement === */
.next-event-card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.02);
  transition: all 400ms var(--ease-out-quart);
}

.next-event-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.1), transparent);
  transition: left 800ms var(--ease-out-quart);
}

.next-event-card:hover::before {
  left: 100%;
}

.next-event-card:hover {
  border-color: var(--border-active);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  transform: scale(1.02);
}

/* === Badge Animations === */
.next-event-badge,
.filter-badge {
  position: relative;
  overflow: hidden;
}

.next-event-badge::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.5s, height 0.5s;
}

.next-event-card:hover .next-event-badge::after {
  width: 200px;
  height: 200px;
}

/* === Accessibility: Reduced Motion === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .poster-frame::before,
  .next-event-card::before {
    animation: none !important;
  }
}

/* === Dark Mode Refinements === */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
  }
}

/* === Mobile Optimizations === */
@media (max-width: 768px) {
  /* Larger touch targets */
  .btn,
  .filter-chip,
  .event-card {
    min-height: 44px; /* iOS recommendation */
  }

  /* Better spacing on mobile */
  .card {
    padding: var(--space-lg);
  }

  /* Disable hover effects on touch devices */
  @media (hover: none) {
    .card:hover,
    .event-card:hover,
    .btn:hover {
      transform: none;
    }

    .poster-frame:hover::before {
      opacity: 0;
    }
  }
}

/* === Print Optimizations === */
@media print {
  .btn,
  .filter-chip,
  .poster-actions {
    display: none !important;
  }

  .event-card {
    break-inside: avoid;
    page-break-inside: avoid;
  }

  * {
    box-shadow: none !important;
    text-shadow: none !important;
  }
}

/* === High Contrast Mode Support === */
@media (prefers-contrast: high) {
  .card {
    border: 2px solid var(--text-primary);
  }

  .btn {
    border: 2px solid currentColor;
  }

  .filter-chip.active {
    outline: 3px solid var(--accent-gold);
  }
}

/* === Smooth Page Transitions === */
@keyframes pageEnter {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.content-area {
  animation: pageEnter 0.6s var(--ease-out-expo);
}

/* === Sticky Header Enhancement === */
.site-header {
  transition: all 350ms var(--ease-out-quart);
}

.site-header.scrolled {
  backdrop-filter: blur(20px) saturate(180%);
  box-shadow: var(--shadow-lg);
  border-bottom: 1px solid var(--border-subtle);
}

/* === Live Stats Highlight === */
.stat-item.highlight {
  animation: highlightPulse 1.5s ease-out;
}

@keyframes highlightPulse {
  0%, 100% {
    background: transparent;
    transform: scale(1);
  }
  50% {
    background: rgba(212, 175, 55, 0.15);
    transform: scale(1.05);
  }
}

/* === Image Loaded State === */
img.loaded {
  animation: fadeIn 0.4s ease-out;
}

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

/* === Success State for Copy Buttons === */
.btn.success {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%) !important;
  transform: scale(1.05);
  animation: successPulse 0.5s ease-out;
}

@keyframes successPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
  }
}