:root {
  --slide-bg: #0f172a;
  --slide-text: #f1f5f9;
  --slide-accent: #10b981;
  --slide-secondary: #3b82f6;
  --slide-tertiary: #a855f7;
  --gradient-start: #10b981;
  --gradient-end: #3b82f6;
  --glow-color: rgba(127, 255, 212, 0.15);
  --code-bg: #1e293b;
  --code-text: #e2e8f0;
  --nav-icon-color: #94a3b8;
  --prose-bg: #0f172a;
  --demo-bg: #1e293b;
  --border-color: rgba(255, 255, 255, 0.1);
}

.light {
  --slide-bg: #f1f5f9;
  --slide-text: #0f172a;
  --slide-accent: #059669;
  --slide-secondary: #2563eb;
  --gradient-start: #34d399;
  --gradient-end: #60a5fa;
  --code-bg: #e2e8f0;
  --code-text: #1e293b;
  --nav-icon-color: #64748b;
  --glow-color: rgba(0, 100, 200, 0.1);
  --prose-bg: #f8fafc;
  --demo-bg: #e2e8f0;
  --border-color: rgba(0, 0, 0, 0.1);
}

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

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

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

@keyframes flowArrow {
  0%,
  100% {
    transform: translateX(0);
    opacity: 0.7;
  }
  50% {
    transform: translateX(5px);
    opacity: 1;
  }
}

.animate-fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.6s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.animate-flow-in {
  opacity: 0;
  transform: translateX(-20px);
  animation: flowIn 0.5s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.animate-flow-arrow {
  animation: flowArrow 1.5s ease-in-out infinite;
}

.animate-delay-100 {
  animation-delay: 0.1s;
}
.animate-delay-200 {
  animation-delay: 0.2s;
}
.animate-delay-300 {
  animation-delay: 0.3s;
}
.animate-delay-400 {
  animation-delay: 0.4s;
}
.animate-delay-500 {
  animation-delay: 0.5s;
}
.animate-delay-600 {
  animation-delay: 0.6s;
}
.animate-delay-700 {
  animation-delay: 0.7s;
}

.bg-slide {
  background-color: var(--slide-bg);
}
.text-slide {
  color: var(--slide-text);
}
.text-accent {
  color: var(--slide-accent);
}
.bg-accent {
  background-color: var(--slide-accent);
}
.text-secondary {
  color: var(--slide-secondary);
}
.bg-secondary {
  background-color: var(--slide-secondary);
}
.bg-code {
  background-color: var(--code-bg);
}
.text-nav-icon {
  color: var(--nav-icon-color);
}
.bg-glow {
  background: var(--glow-color);
}
.bg-prose {
  background-color: var(--prose-bg);
}
.bg-demo {
  background-color: var(--demo-bg);
}
.border-theme {
  border-color: var(--border-color);
}

pre {
  font-family: "Fira Code", "SF Mono", Monaco, monospace;
  background: var(--code-bg);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 1rem 0;
  text-align: left;
  font-size: 0.85rem;
  line-height: 1.6;
  border: 1px solid var(--border-color);
  box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.2);
}

code {
  font-family: "Fira Code", Monaco, monospace;
  background: var(--code-bg);
  border-radius: 4px;
  padding: 0.15rem 0.4rem;
  font-size: 0.9em;
  color: var(--slide-accent);
}

pre code {
  background: transparent;
  padding: 0;
  color: var(--code-text);
}

.token.comment,
.token.prolog,
.token.doctype,
.token.cdata {
  color: #64748b;
}
.token.punctuation {
  color: #94a3b8;
}
.token.property,
.token.tag,
.token.boolean,
.token.number,
.token.constant,
.token.symbol,
.token.deleted {
  color: #fb923c;
}
.token.selector,
.token.attr-name,
.token.string,
.token.char,
.token.builtin,
.token.inserted {
  color: #4ade80;
}
.token.operator,
.token.entity,
.token.url,
.language-css .token.string,
.style .token.string {
  color: #60a5fa;
}
.token.atrule,
.token.attr-value,
.token.keyword {
  color: #c084fc;
}
.token.function,
.token.class-name {
  color: #facc15;
}
.token.regex,
.token.important,
.token.variable {
  color: #f87171;
}

.light .token.comment,
.light .token.prolog,
.light .token.doctype,
.light .token.cdata {
  color: #6b7280;
}
.light .token.punctuation {
  color: #4b5563;
}
.light .token.property,
.light .token.tag,
.light .token.boolean,
.light .token.number,
.light .token.constant,
.light .token.symbol,
.light .token.deleted {
  color: #c2410c;
}
.light .token.selector,
.light .token.attr-name,
.light .token.string,
.light .token.char,
.light .token.builtin,
.light .token.inserted {
  color: #15803d;
}
.light .token.operator,
.light .token.entity,
.light .token.url,
.light .language-css .token.string,
.light .style .token.string {
  color: #1d4ed8;
}
.light .token.atrule,
.light .token.attr-value,
.light .token.keyword {
  color: #7c3aed;
}
.light .token.function,
.light .token.class-name {
  color: #a16207;
}
.light .token.regex,
.light .token.important,
.light .token.variable {
  color: #b91c1c;
}

.gradient-title {
  background: linear-gradient(
    135deg,
    var(--gradient-start),
    var(--gradient-end)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.gradient-bar {
  background: linear-gradient(
    90deg,
    var(--gradient-start),
    var(--gradient-end)
  );
}

.section-content::-webkit-scrollbar,
.prose-column::-webkit-scrollbar,
.demo-column::-webkit-scrollbar {
  width: 6px;
}
.section-content::-webkit-scrollbar-track,
.prose-column::-webkit-scrollbar-track,
.demo-column::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}
.section-content::-webkit-scrollbar-thumb,
.prose-column::-webkit-scrollbar-thumb,
.demo-column::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 3px;
}
.section-content::-webkit-scrollbar-thumb:hover,
.prose-column::-webkit-scrollbar-thumb:hover,
.demo-column::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.tea-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  padding: 0.5rem;
  flex-wrap: wrap;
}

.tea-box {
  padding: 0.5rem;
  border-radius: 12px;
  border: 2px solid;
  text-align: center;
  width: 80px;
  height: 120px;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.tea-box:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.tea-box.model {
  border-color: #10b981;
  background: rgba(16, 185, 129, 0.1);
}

.tea-box.update {
  border-color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

.tea-box.view {
  border-color: #a855f7;
  background: rgba(168, 85, 247, 0.1);
}

.tea-arrow {
  color: var(--slide-accent);
  font-size: 1.5rem;
  opacity: 0.7;
}

.demo-container {
  background: var(--demo-bg);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  margin: 1rem 0;
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--border-color);
}

.demo-content {
  padding: 1.5rem;
  min-height: 100px;
}

.demo-inspector {
  padding: 1rem;
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--border-color);
  font-family: "Fira Code", monospace;
  font-size: 0.75rem;
}

.message-log {
  max-height: 120px;
  overflow-y: auto;
  font-size: 0.7rem;
  line-height: 1.4;
}

.message-entry {
  padding: 0.25rem 0.5rem;
  margin: 0.25rem 0;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.1);
  border-left: 3px solid var(--slide-accent);
}

@media (prefers-reduced-motion: reduce) {
  .animate-fade-in-up,
  .animate-flow-in,
  .animate-flow-arrow {
    animation-duration: 0s;
    animation-delay: 0s;
    opacity: 1;
    transform: none;
  }
  .transition-transform,
  .transition-all,
  .transition-colors {
    transition-duration: 0s;
  }
}

@media (max-width: 1024px) {
  .two-column {
    flex-direction: column;
  }

  .two-column > .prose-column,
  .two-column > .demo-column {
    width: 100%;
    max-height: none;
    overflow-y: visible;
  }

  pre {
    font-size: 0.75rem;
    padding: 1rem;
  }
}