@import "tailwindcss";

@theme inline {
  --font-sans: var(--font-geist-sans);
  --font-mono: var(--font-geist-mono);
  --font-chinese: var(--font-noto-sans-sc);
}

:root {
  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #FAFAFA;
  --color-bg-tertiary: #F5F5F5;
  --color-bg-hover: #F0F0F0;
  
  --color-text-primary: #171717;
  --color-text-secondary: #525252;
  --color-text-tertiary: #737373;
  --color-text-muted: #A3A3A3;
  
  --color-border-primary: #E5E5E5;
  --color-border-secondary: #F0F0F0;
  --color-border-accent: #D4D4D4;
  
  --color-accent: #171717;
  --color-accent-hover: #262626;
  --color-accent-light: #404040;
  
  --color-link: #525252;
  --color-link-hover: #171717;
  
  --color-brand-primary: #C41E3A;
  --color-brand-primary-hover: #A01830;
  --color-brand-primary-light: #D4244A;
  --color-brand-primary-lighter: #E04A68;
  --color-brand-primary-bg: #FEF2F4;
  
  --color-tech-blue: #00D9FF;
  --color-tech-purple: #A855F7;
  --color-tech-cyan: #06B6D4;
  
  --color-success: #16A34A;
  --color-success-bg: #F0FDF4;
  --color-warning: #D97706;
  --color-warning-bg: #FFFBEB;
  --color-info: #0284C7;
  --color-info-bg: #F0F9FF;
  --color-error: #DC2626;
  --color-error-bg: #FEF2F2;
  
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  
  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;
  
  --border-width-thin: 0.5px;
  --border-width-normal: 1px;
  
  --transition-fast: 150ms;
  --transition-normal: 200ms;
  --transition-slow: 300ms;
  
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

.dark {
  --color-bg-primary: #0A0A0A;
  --color-bg-secondary: #171717;
  --color-bg-tertiary: #262626;
  --color-bg-hover: #333333;
  
  --color-text-primary: #FAFAFA;
  --color-text-secondary: #D4D4D4;
  --color-text-tertiary: #A3A3A3;
  --color-text-muted: #737373;
  
  --color-border-primary: #333333;
  --color-border-secondary: #262626;
  --color-border-accent: #404040;
  
  --color-accent: #FAFAFA;
  --color-accent-hover: #E5E5E5;
  --color-accent-light: #D4D4D4;
  
  --color-link: #D4D4D4;
  --color-link-hover: #FAFAFA;
  
  --color-brand-primary: #E04A68;
  --color-brand-primary-hover: #D4244A;
  --color-brand-primary-light: #E86B85;
  --color-brand-primary-lighter: #F08C9F;
  --color-brand-primary-bg: #1A0F11;
  
  --color-tech-blue: #00D9FF;
  --color-tech-purple: #A855F7;
  --color-tech-cyan: #06B6D4;
  
  --color-success: #22C55E;
  --color-success-bg: #052E16;
  --color-warning: #F59E0B;
  --color-warning-bg: #1C1917;
  --color-info: #0EA5E9;
  --color-info-bg: #0C2D48;
  --color-error: #EF4444;
  --color-error-bg: #1C1917;
}

@layer base {
  * {
    @apply antialiased;
    border-color: var(--color-border-primary);
  }
  
  html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }
  
  body {
    background-color: var(--color-bg-secondary);
    color: var(--color-text-primary);
    font-family: var(--font-chinese), var(--font-sans), -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    position: relative;
  }
  
  body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
      radial-gradient(ellipse at 15% 20%, rgba(196, 30, 58, 0.02) 0%, transparent 50%),
      radial-gradient(ellipse at 85% 80%, rgba(23, 23, 23, 0.015) 0%, transparent 50%),
      radial-gradient(ellipse at 50% 50%, rgba(196, 30, 58, 0.01) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
  }
  
  h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: var(--line-height-tight);
    letter-spacing: var(--letter-spacing-tight);
    color: var(--color-text-primary);
  }
  
  h1 {
    font-size: var(--font-size-5xl);
  }
  
  h2 {
    font-size: var(--font-size-4xl);
  }
  
  h3 {
    font-size: var(--font-size-2xl);
  }
  
  h4 {
    font-size: var(--font-size-xl);
  }
  
  p {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
  }
  
  a {
    color: var(--color-link);
    text-decoration: none;
    transition: color var(--transition-fast) var(--ease-out);
  }
  
  a:hover {
    color: var(--color-link-hover);
  }
  
  button {
    font-family: inherit;
    cursor: pointer;
  }
  
  input, textarea {
    font-family: inherit;
    outline: none;
  }
  
  input:focus, textarea:focus {
    outline: none;
  }
  
  ::selection {
    background-color: var(--color-text-primary);
    color: var(--color-bg-primary);
  }
}

@layer utilities {
  .container-narrow {
    width: 100%;
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
  
  .container-wide {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
  
  .container-full {
    width: 100%;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
  
  .section-padding {
    padding-top: var(--spacing-5xl);
    padding-bottom: var(--spacing-5xl);
  }
  
  .section-padding-sm {
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
  }
  
  .text-balance {
    text-wrap: balance;
  }
  
  .text-pretty {
    text-wrap: pretty;
  }
  
  .border-thin {
    border-width: var(--border-width-thin);
  }
  
  .transition-smooth {
    transition: all var(--transition-normal) var(--ease-out);
  }
  
  .transition-fast {
    transition: all var(--transition-fast) var(--ease-out);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-8px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes drawLine {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}

@keyframes stampIn {
  0% {
    opacity: 0;
    transform: scale(1.5) rotate(-15deg);
  }
  50% {
    opacity: 0.8;
    transform: scale(0.95) rotate(0deg);
  }
  70% {
    transform: scale(1.02) rotate(0deg);
  }
  100% {
    opacity: 1;
    transform: scale(1) rotate(0deg);
  }
}

@keyframes inkSpread {
  0% {
    opacity: 0;
    transform: scale(0.8);
    filter: blur(4px);
  }
  100% {
    opacity: 0.03;
    transform: scale(1);
    filter: blur(0);
  }
}

@keyframes inkFlow {
  0%, 100% {
    background-position: 0% 0%;
  }
  50% {
    background-position: 100% 100%;
  }
}

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

@keyframes sectionReveal {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.animate-fade-in {
  animation: fadeIn 0.5s var(--ease-out) forwards;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s var(--ease-out) forwards;
}

.animate-slide-in {
  animation: slideIn 0.4s var(--ease-out) forwards;
}

.animate-scale-in {
  animation: scaleIn 0.3s var(--ease-out) forwards;
}

.animate-draw-line {
  animation: drawLine 0.4s var(--ease-out) forwards;
  transform-origin: left;
}

.animate-stamp-in {
  animation: stampIn 0.6s var(--ease-out) forwards;
}

.animate-ink-spread {
  animation: inkSpread 1s var(--ease-out) forwards;
}

.animate-section-reveal {
  animation: sectionReveal 0.8s var(--ease-out) forwards;
}

.animate-number-count {
  animation: numberCount 0.5s var(--ease-out) forwards;
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }

.geometric-card {
  border: 1px solid rgba(196, 30, 58, 0.08);
  position: relative;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  transition: all 0.3s var(--ease-out);
}

.geometric-card::before,
.geometric-card::after {
  content: '';
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid rgba(196, 30, 58, 0.15);
  opacity: 0;
  transition: all 0.3s var(--ease-out);
}

.geometric-card::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
  border-radius: 4px 0 0 0;
}

.geometric-card::after {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
  border-radius: 0 0 4px 0;
}

.geometric-card:hover {
  border-color: rgba(196, 30, 58, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px -12px rgba(196, 30, 58, 0.15);
}

.geometric-card:hover::before,
.geometric-card:hover::after {
  opacity: 1;
}

.geometric-card:hover::before {
  animation: cornerFadeIn 0.3s var(--ease-out) forwards;
}

.geometric-card:hover::after {
  animation: cornerFadeIn 0.3s var(--ease-out) 0.1s forwards;
}

.ink-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(196, 30, 58, 0.2), transparent);
  position: relative;
}

.ink-divider::before {
  content: '';
  position: absolute;
  left: 50%;
  top: -3px;
  width: 6px;
  height: 6px;
  background: var(--color-brand-primary);
  border-radius: 50%;
  transform: translateX(-50%);
  opacity: 0.3;
}

.chapter-title {
  position: relative;
  display: inline-block;
}

.chapter-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-brand-primary);
  border-radius: 2px;
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s var(--ease-out);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.ink-texture {
  position: relative;
}

.ink-texture::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.015;
  pointer-events: none;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

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

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

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

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.25rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
  }
  
  .section-padding {
    padding-top: var(--spacing-3xl);
    padding-bottom: var(--spacing-3xl);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 217, 255, 0.6);
  }
}

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

@keyframes pulse-glow {
  0%, 100% {
    opacity: 0.2;
  }
  50% {
    opacity: 0.4;
  }
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

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

.animate-pulse-glow {
  animation: pulse-glow 2s ease-in-out infinite;
}

.tech-gradient {
  background: linear-gradient(135deg, var(--color-tech-blue) 0%, var(--color-tech-purple) 100%);
}

.tech-gradient-text {
  background: linear-gradient(135deg, var(--color-tech-blue) 0%, var(--color-tech-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tech-glow {
  box-shadow: 0 0 20px rgba(0, 217, 255, 0.3);
}

.tech-glow-hover:hover {
  box-shadow: 0 0 30px rgba(0, 217, 255, 0.5);
}

.tech-border {
  border: 1px solid rgba(0, 217, 255, 0.3);
}

.tech-border-hover:hover {
  border-color: rgba(0, 217, 255, 0.6);
}
