@import "tailwindcss";

@theme inline {
  --font-sans: var(--font-noto-sans-sc), var(--font-geist-sans), -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: var(--font-geist-mono);
  --font-chinese: var(--font-noto-sans-sc), sans-serif;
  --font-calligraphy: var(--font-ma-shan-zheng), 'ZCOOL XiaoWei', 'STKaiti', 'KaiTi', serif;
}

:root {
  --color-primary: #1C1C1C;
  --color-primary-hover: #0A0A0A;
  --color-primary-light: #3D3D3D;
  --color-primary-lighter: #F5F5F5;
  --color-primary-rgb: 28, 28, 28;

  --color-brand-primary: #C41E3A;
  --color-brand-primary-hover: #A01830;
  --color-brand-primary-light: #E04A68;
  --color-brand-primary-bg: #FEF2F4;

  --color-bg-primary: #FFFFFF;
  --color-bg-secondary: #FFFBF5;
  --color-bg-tertiary: #F5F5F5;
  --color-bg-section: #FAFAFA;
  --color-bg-hover: #EFEFEF;

  --color-text-primary: #1C1C1C;
  --color-text-secondary: #3D3D3D;
  --color-text-tertiary: #404040;
  --color-text-muted: #595959;
  --color-text-subtle: #A3A3A3;
  --color-text-placeholder: #5C5C5C;
  --color-text-hint: #8C8C8C;

  --color-border-primary: #E5E5E5;
  --color-border-secondary: #D4D4D4;
  --color-border-accent: #1C1C1C;
  --color-border-light: #F0F0F0;
  --color-border-dark: #333333;

  --color-link: #1C1C1C;
  --color-link-hover: #C41E3A;

  --color-success: #16A34A;
  --color-success-hover: #15803D;
  --color-success-bg: #F0FDF4;
  --color-warning: #D97706;
  --color-warning-hover: #B45309;
  --color-warning-bg: #FFFBEB;
  --color-info: #5C5C5C;
  --color-info-bg: #F5F5F5;
  --color-error: #C41E3A;
  --color-error-bg: #FEF2F4;

  --color-accent-blue: #2563EB;
  --color-accent-purple: #7C3AED;
  --color-accent-cyan: #0891B2;

  --color-brand-primary-rgb: 196, 30, 58;
  --color-warning-rgb: 217, 119, 6;
  --color-success-rgb: 22, 163, 74;
  --color-accent-blue-rgb: 37, 99, 235;
  --color-accent-purple-rgb: 124, 58, 237;
  --color-accent-cyan-rgb: 8, 145, 178;

  --color-footer-bg: #1C1C1C;
  --color-cta-bg: #FAFAFA;
  --color-hero-dark-end: #1C1C1C;
  --color-footer-text: #A0A0A0;
  --color-footer-text-muted: #666666;
  --color-footer-text-dim: #999999;
  --color-footer-text-link: #E0E0E0;
  --color-footer-border: #333333;

  --color-challenge-isolation: #FEF2F4;
  --color-challenge-isolation-hover: #FDE8EC;
  --color-challenge-growth: #FFFBEB;
  --color-challenge-growth-hover: #FEF3C7;
  --color-challenge-compliance: #F0FDF4;
  --color-challenge-compliance-hover: #DCFCE7;

  --color-flip-card-bg: #FAFAFA;
  --color-flip-card-border: #E5E5E5;
  --color-flip-card-divider: #B0B0B0;
  --color-flip-card-divider-subtle: #D4D4D4;

  --color-toast-success-bg: #F0FDF4;
  --color-toast-success-border: #BBF7D0;
  --color-toast-error-bg: #FEF2F4;
  --color-toast-error-border: #FECACA;
  --color-toast-info-bg: #EFF6FF;
  --color-toast-info-border: #BFDBFE;
  --color-toast-close: #A3A3A3;
  --color-toast-close-hover: #595959;

  --color-skeleton-bg: #E5E5E5;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.05);

  --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);
}

[data-theme="dark"] {
  --color-primary: #E5E5E5;
  --color-primary-hover: #F5F5F5;
  --color-primary-light: #A3A3A3;
  --color-primary-lighter: #262626;
  --color-primary-rgb: 229, 229, 229;

  --color-brand-primary: #E04A68;
  --color-brand-primary-hover: #F06880;
  --color-brand-primary-light: #C41E3A;
  --color-brand-primary-bg: rgba(196, 30, 58, 0.15);

  --color-bg-primary: #0A0A0A;
  --color-bg-secondary: #0F0F0F;
  --color-bg-tertiary: #1A1A1A;
  --color-bg-section: #141414;
  --color-bg-hover: #262626;

  --color-text-primary: #E5E5E5;
  --color-text-secondary: #B0B0B0;
  --color-text-tertiary: #A0A0A0;
  --color-text-muted: #8C8C8C;
  --color-text-subtle: #666666;
  --color-text-placeholder: #737373;
  --color-text-hint: #5C5C5C;

  --color-border-primary: #2A2A2A;
  --color-border-secondary: #333333;
  --color-border-accent: #E5E5E5;
  --color-border-light: #1F1F1F;
  --color-border-dark: #CCCCCC;

  --color-link: #E5E5E5;
  --color-link-hover: #E04A68;

  --color-success: #22C55E;
  --color-success-hover: #16A34A;
  --color-success-bg: rgba(22, 163, 74, 0.15);
  --color-warning: #F59E0B;
  --color-warning-hover: #D97706;
  --color-warning-bg: rgba(217, 119, 6, 0.15);
  --color-info: #8C8C8C;
  --color-info-bg: #1A1A1A;
  --color-error: #E04A68;
  --color-error-bg: rgba(196, 30, 58, 0.15);

  --color-accent-blue: #3B82F6;
  --color-accent-purple: #8B5CF6;
  --color-accent-cyan: #06B6D4;

  --color-brand-primary-rgb: 224, 74, 104;
  --color-warning-rgb: 245, 158, 11;
  --color-success-rgb: 34, 197, 94;
  --color-accent-blue-rgb: 59, 130, 246;
  --color-accent-purple-rgb: 139, 92, 246;
  --color-accent-cyan-rgb: 6, 182, 212;

  --color-footer-bg: #000000;
  --color-cta-bg: #141414;
  --color-hero-dark-end: #1A0A10;
  --color-footer-text: #8C8C8C;
  --color-footer-text-muted: #525252;
  --color-footer-text-dim: #737373;
  --color-footer-text-link: #B0B0B0;
  --color-footer-border: #262626;

  --color-challenge-isolation: rgba(196, 30, 58, 0.12);
  --color-challenge-isolation-hover: rgba(196, 30, 58, 0.2);
  --color-challenge-growth: rgba(217, 119, 6, 0.12);
  --color-challenge-growth-hover: rgba(217, 119, 6, 0.2);
  --color-challenge-compliance: rgba(22, 163, 74, 0.12);
  --color-challenge-compliance-hover: rgba(22, 163, 74, 0.2);

  --color-flip-card-bg: #1A1A1A;
  --color-flip-card-border: #2A2A2A;
  --color-flip-card-divider: #525252;
  --color-flip-card-divider-subtle: #333333;

  --color-toast-success-bg: rgba(22, 163, 74, 0.15);
  --color-toast-success-border: rgba(34, 197, 94, 0.3);
  --color-toast-error-bg: rgba(196, 30, 58, 0.15);
  --color-toast-error-border: rgba(224, 74, 104, 0.3);
  --color-toast-info-bg: rgba(59, 130, 246, 0.15);
  --color-toast-info-border: rgba(59, 130, 246, 0.3);
  --color-toast-close: #666666;
  --color-toast-close-hover: #A3A3A3;

  --color-skeleton-bg: #262626;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.3);
}

@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;
    overflow-x: hidden;
  }

  @media (min-width: 640px) {
    html {
      font-size: 17px;
    }
  }

  @media (min-width: 1024px) {
    html {
      font-size: 18px;
    }
  }

  body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    line-height: var(--line-height-normal);
    letter-spacing: var(--letter-spacing-normal);
    position: relative;
    overflow-x: hidden;
    width: 100%;
  }

  body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
      radial-gradient(ellipse at 15% 20%, rgba(var(--color-primary-rgb), 0.02) 0%, transparent 50%),
      radial-gradient(ellipse at 85% 80%, rgba(var(--color-brand-primary-rgb), 0.02) 0%, transparent 50%);
    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;
  }

  .font-calligraphy {
    font-family: var(--font-ma-shan-zheng), 'Ma Shan Zheng', 'ZCOOL XiaoWei', 'STKaiti', 'KaiTi', serif !important;
    font-weight: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  .font-brand {
    font-family: var(--font-aoyagi-reisho), 'Aoyagi Reisho', 'Ma Shan Zheng', 'ZCOOL XiaoWei', 'STKaiti', 'KaiTi', serif !important;
    font-weight: normal;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
  }

  ::selection {
    background-color: var(--color-text-primary);
    color: var(--color-bg-primary);
  }
}

@layer utilities {
  .container-wide {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .container-wide {
      padding-left: var(--spacing-2xl);
      padding-right: var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    .container-wide {
      padding-left: 4rem;
      padding-right: 4rem;
    }
  }

  .container-full {
    width: 100%;
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }

  @media (min-width: 768px) {
    .container-full {
      padding-left: var(--spacing-2xl);
      padding-right: var(--spacing-2xl);
    }
  }

  @media (min-width: 1024px) {
    .container-full {
      padding-left: 4rem;
      padding-right: 4rem;
    }
  }

  .section-padding {
    padding-top: var(--spacing-5xl);
    padding-bottom: var(--spacing-5xl);
  }
}

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

@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);
  }
}

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

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

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }

::-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);
  }
}

.safe-area-inset-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

body {
  padding-bottom: 0;
  text-wrap: pretty;
}

@media (max-width: 767px) {
  body {
    padding-bottom: 64px;
  }

  .container-wide,
  .container-full {
    padding-left: 1rem;
    padding-right: 1rem;
    max-width: 100%;
    overflow-x: hidden;
  }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.375rem; }

  a:not(nav[aria-label="breadcrumb"] a), button {
    min-height: 44px;
    min-width: 44px;
  }
  nav[aria-label="breadcrumb"] a {
    min-height: 0;
    min-width: 0;
  }

  p, li, span {
    overflow-wrap: break-word;
    word-wrap: break-word;
  }
}

@property --border-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

@keyframes rotateBorder {
  from { --border-angle: 0deg; }
  to { --border-angle: 360deg; }
}

.ink-glow-border {
  animation: rotateBorder 4s linear infinite;
}

.ink-glow-border::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: conic-gradient(from var(--border-angle), var(--glow-start), var(--glow-end), var(--glow-start));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.5s ease;
}

.ink-glow-border:hover::before {
  opacity: 1;
}

.ink-glow-border::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: inherit;
  background: conic-gradient(from var(--border-angle), var(--glow-start), var(--glow-end), var(--glow-start));
  filter: blur(12px);
  opacity: 0;
  transition: opacity 0.5s ease;
  z-index: -1;
}

.ink-glow-border:hover::after {
  opacity: 0.3;
}

@media (min-width: 768px) and (max-width: 1023px) {
  .container-wide,
  .container-full {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }

  .section-padding {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }
}

.page-transition-loader {
  width: 120px;
  height: 3px;
  background: var(--color-bg-section);
  border-radius: 2px;
  overflow: hidden;
}

.page-transition-loader__bar {
  width: 40%;
  height: 100%;
  background: var(--color-brand-primary);
  border-radius: 2px;
  animation: page-loader-slide 1.2s ease-in-out infinite;
}

@keyframes page-loader-slide {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(200%);
  }
  100% {
    transform: translateX(-100%);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-transition-loader__bar {
    animation: none;
    width: 100%;
  }
}