/* ===================================================
   RANDOM WINNER PICKER — Premium Styles
   =================================================== */

/* --- Custom Properties --- */
:root {
  --color-bg: #0f0f13;
  --color-surface: #1a1a22;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-text: #f0f0f5;
  --color-text-muted: #8a8a9a;
  --color-gold: #FFD700;
  --color-gold-dark: #FF8F00;
  --color-accent-gradient: linear-gradient(135deg, #FFD700 0%, #FF8F00 100%);
  --radius-card: 12px;
  --radius-lg: 24px;
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(255, 215, 0, 0.5), 0 0 40px rgba(255, 215, 0, 0.2);
  --card-size: 80px;
  --grid-gap: 10px;
  --parallax-intensity: 1;
  --transition-base: 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* --- App Layout --- */
.app {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px 60px;
  min-height: 100vh;
}

.app__header {
  text-align: center;
  margin-bottom: 40px;
}

.app__title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: none;
}

/* --- Start Button --- */
.btn-start {
  display: inline-block;
  padding: 16px 48px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-bg);
  background: var(--color-accent-gradient);
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
}

.btn-start:hover:not(:disabled) {
  transform: scale(1.05);
  box-shadow: 0 6px 30px rgba(255, 215, 0, 0.5);
}

.btn-start:active:not(:disabled) {
  transform: scale(0.98);
}

.btn-start:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-start:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

/* --- Grid Wrapper --- */
.grid-wrapper {
  width: 100%;
  max-width: 900px;
  overflow: hidden;
  perspective: 1000px;
}

/* --- Participant Grid (CSS Grid — single layout pass) --- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, var(--card-size));
  justify-content: center;
  gap: var(--grid-gap);
}

/* --- Card --- */
.card {
  position: relative;
  width: var(--card-size);
  height: var(--card-size);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  cursor: default;
  contain: layout style paint;
}

.card picture {
  display: block;
  width: 100%;
  height: 100%;
}

.card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.card:hover {
  transform: scale(1.03);
  transition: transform 0.2s ease;
}

/* --- Card States During Draw --- */
.card--dimmed {
  opacity: 0.6;
}

.card--active {
  transform: scale(1.08);
  border-color: var(--color-gold);
  box-shadow: var(--shadow-glow);
  opacity: 1;
  z-index: 10;
}

/* --- Overlay --- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

.overlay__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

/* --- Winner Slot --- */
.winner-slot {
  width: 400px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* --- Winner Card in Overlay --- */
.card--winner {
  width: 400px !important;
  height: 400px !important;
  border-radius: var(--radius-lg) !important;
  border: 3px solid var(--color-gold) !important;
  box-shadow: 0 0 40px rgba(255, 215, 0, 0.4), 0 0 80px rgba(255, 215, 0, 0.15) !important;
  z-index: 1001;
}

.card--winner > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* --- Winner Info --- */
.winner-info {
  text-align: center;
  opacity: 0;
  transform: translateY(10px);
}

.winner-info--visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.4s ease 0.2s, transform 0.4s ease 0.2s;
}

.winner-info__badge {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.winner-info__name {
  display: block;
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--color-text);
}

/* --- Reset Button --- */
.btn-reset {
  padding: 12px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  cursor: pointer;
  transition: background var(--transition-base), transform var(--transition-base);
  opacity: 0;
}

.btn-reset--visible {
  opacity: 1;
  transition: opacity 0.4s ease 0.4s;
}

.btn-reset:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.03);
}

.btn-reset:focus-visible {
  outline: 3px solid var(--color-gold);
  outline-offset: 3px;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --card-size: 70px;
    --grid-gap: 8px;
    --parallax-intensity: 0.5;
  }

  .app__title {
    font-size: 1.5rem;
  }

  .overlay {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .winner-slot,
  .card--winner {
    width: 300px !important;
    height: 300px !important;
  }
}

@media (max-width: 480px) {
  :root {
    --card-size: 60px;
    --grid-gap: 6px;
    --parallax-intensity: 0;
  }

  .app {
    padding: 24px 12px 40px;
  }

  .app__title {
    font-size: 1.3rem;
  }

  .btn-start {
    padding: 14px 36px;
    font-size: 1rem;
  }

  .winner-slot,
  .card--winner {
    width: 250px !important;
    height: 250px !important;
  }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
  :root {
    --parallax-intensity: 0;
  }

  .card,
  .btn-start,
  .btn-reset {
    transition: none !important;
  }
}