/*
 * This is a manifest file that'll be compiled into application.css.
 *
 * With Propshaft, assets are served efficiently without preprocessing steps. You can still include
 * application-wide styles in this file, but keep in mind that CSS precedence will follow the standard
 * cascading order, meaning styles declared later in the document or manifest will override earlier ones,
 * depending on specificity.
 *
 * Consider organizing styles into separate files for maintainability.
 */

/* ============================================
   CHESS PUZZLES - CUSTOM UI/UX STYLES
   ============================================ */

:root {
  --color-wood-light: #f4e4bc;
  --color-wood-dark: #8b5a2b;
  --color-wood-medium: #c4a35a;
  --color-slate-deep: #1e293b;
  --color-slate-mid: #334155;
  --color-amber-bright: #f59e0b;
  --color-amber-soft: #fbbf24;
  --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.3);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dark {
  --color-slate-deep: #0f172a;
  --color-slate-mid: #1e293b;
  --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.2);
}

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

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(245, 158, 11, 0);
  }
}

@keyframes bounceSubtle {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

@keyframes spinSlow {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

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

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
  20%, 40%, 60%, 80% { transform: translateX(4px); }
}

@keyframes successPop {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

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

.animate-fade-in-up {
  animation: fadeInUp 0.5s var(--transition-spring) forwards;
}

.animate-fade-in-scale {
  animation: fadeInScale 0.4s var(--transition-spring) forwards;
}

.animate-slide-in-right {
  animation: slideInRight 0.4s var(--transition-spring) forwards;
}

.animate-pulse-glow {
  animation: pulseGlow 2s infinite;
}

.animate-bounce-subtle {
  animation: bounceSubtle 0.5s var(--transition-spring);
}

.animate-shake {
  animation: shake 0.5s var(--transition-base);
}

.animate-success-pop {
  animation: successPop 0.6s var(--transition-spring) forwards;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.stagger-children > * {
  opacity: 0;
  animation: fadeInUp 0.5s var(--transition-spring) forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 50ms; }
.stagger-children > *:nth-child(3) { animation-delay: 100ms; }
.stagger-children > *:nth-child(4) { animation-delay: 150ms; }
.stagger-children > *:nth-child(5) { animation-delay: 200ms; }
.stagger-children > *:nth-child(6) { animation-delay: 250ms; }
.stagger-children > *:nth-child(7) { animation-delay: 300ms; }
.stagger-children > *:nth-child(8) { animation-delay: 350ms; }
.stagger-children > *:nth-child(9) { animation-delay: 400ms; }
.stagger-children > *:nth-child(10) { animation-delay: 450ms; }
.stagger-children > *:nth-child(11) { animation-delay: 500ms; }
.stagger-children > *:nth-child(12) { animation-delay: 550ms; }

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

.card {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  transition: all var(--transition-base);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.dark .card {
  background: #1e293b;
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
}

.card:hover {
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  transform: translateY(-2px);
}

.dark .card:hover {
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
}

.card-interactive {
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.card-interactive::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(245, 158, 11, 0.03) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card-interactive:hover::before {
  opacity: 1;
}

.card-interactive:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1), var(--shadow-glow);
}

.dark .card-interactive:hover {
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4), var(--shadow-glow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-weight: 500;
  border-radius: 8px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
  box-shadow: 0 4px 6px -1px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 12px -2px rgba(245, 158, 11, 0.4);
  transform: translateY(-1px);
}

.nav-link {
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-amber-bright);
  transition: all var(--transition-base);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-link:hover::after {
  width: 100%;
}

.form-input:focus {
  background: white;
  border-color: #f59e0b;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
  outline: none;
}

.dark .form-input:focus {
  background: #0f172a;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.2);
}

.skeleton {
  background: linear-gradient(
    90deg,
    #f1f5f9 25%,
    #e2e8f0 50%,
    #f1f5f9 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: 4px;
}

.dark .skeleton {
  background: linear-gradient(
    90deg,
    #1e293b 25%,
    #334155 50%,
    #1e293b 75%
  );
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 3px solid rgba(245, 158, 11, 0.2);
  border-top-color: #f59e0b;
  border-radius: 50%;
  animation: spinSlow 0.8s linear infinite;
}

.board-container {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 
    0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04),
    inset 0 0 0 1px rgba(0, 0, 0, 0.05);
}

.tag {
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.tag:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.empty-state {
  animation: fadeInUp 0.6s var(--transition-spring) forwards;
}

.empty-state-icon {
  animation: float 3s ease-in-out infinite;
}

.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.focus-ring:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.5);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: #f1f5f9;
  border-radius: 4px;
}

.dark ::-webkit-scrollbar-track {
  background: #1e293b;
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb {
  background: #475569;
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

.dark ::-webkit-scrollbar-thumb:hover {
  background: #64748b;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}