/* ============================================================
   CRS Landing Pages — Shared Styles
   Hermès-inspired palette with refined typography & micro-interactions
   ============================================================ */

:root {
  --hermes-orange: #FF6600;
  --charcoal-black: #1A1A1A;
  --ivory-white: #F5F0EB;
  --matte-gold: #C5A059;
  --muted-gray: #7F7F7F;
  --warn-red: #8B0000;
  --border-line: rgba(26, 26, 26, 0.15);
  --border-light: rgba(245, 240, 235, 0.15);

  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", serif;
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* Reset & Base */
* { margin: 0; padding: 0; box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--ivory-white);
  color: var(--charcoal-black);
  font-family: var(--font-sans);
  line-height: 1.8;
  padding: 0;
}

/* Paper texture overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
}

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: 0.08em;
  line-height: 1.4;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 1.9rem);
  font-weight: 300;
  letter-spacing: 0.18em;
  margin-bottom: 60px;
  text-align: center;
  color: var(--charcoal-black);
}

.section-subtitle {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--muted-gray);
  text-align: center;
  margin-top: -45px;
  margin-bottom: 50px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ============================================================
   Layout containers
   ============================================================ */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 5%;
}

section {
  padding: 80px 0;
  position: relative;
}

/* ============================================================
   Micro-interactions: Scroll Reveal
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================================
   Micro-interactions: Hover lifts
   ============================================================ */
.lift-hover {
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
.lift-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(26, 26, 26, 0.08);
}

/* Underline expand on hover */
.hover-line {
  position: relative;
  display: inline-block;
}
.hover-line::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1px;
  background: var(--hermes-orange);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.hover-line:hover::after {
  width: 100%;
}

/* ============================================================
   Print Button (floating)
   ============================================================ */
.print-btn {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 100;
  background: var(--charcoal-black);
  color: var(--ivory-white);
  border: 1px solid var(--matte-gold);
  padding: 14px 24px;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background 0.3s, transform 0.3s;
}
.print-btn:hover {
  background: var(--hermes-orange);
  border-color: var(--hermes-orange);
  transform: translateY(-2px);
}
.print-btn svg {
  width: 16px; height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
}

/* ============================================================
   Sticky Navigation (mini)
   ============================================================ */
.mini-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 240, 235, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-line);
  padding: 0 5%;
}
.mini-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}
.mini-nav-logo {
  font-family: var(--font-serif);
  font-size: 1rem;
  letter-spacing: 0.1em;
  color: var(--charcoal-black);
}
.mini-nav-links {
  display: flex;
  gap: 28px;
}
.mini-nav-links a {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted-gray);
  text-decoration: none;
  transition: color 0.3s;
}
.mini-nav-links a:hover {
  color: var(--hermes-orange);
}

/* ============================================================
   Shared Components
   ============================================================ */
.gold-line {
  width: 40px;
  height: 1px;
  background: var(--matte-gold);
  margin: 20px auto;
}

.tag {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--border-line);
  color: var(--muted-gray);
  margin-bottom: 16px;
}

.disclaimer {
  font-size: 0.8rem;
  color: var(--muted-gray);
  border-top: 1px dashed var(--border-line);
  padding-top: 20px;
  margin-top: 40px;
  line-height: 1.7;
}

/* ============================================================
   Dark Sections
   ============================================================ */
.dark-section {
  background: linear-gradient(180deg, #1A1A1A 0%, #252525 100%);
  color: var(--ivory-white);
  margin: 0 -5vw;
  padding: 80px 5vw;
}
.dark-section .section-title {
  color: var(--ivory-white);
}

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
  @page {
    margin: 18mm 16mm;
    size: A4;
  }

  /* Force system fonts to avoid web font loading issues in print preview */
  html { scroll-behavior: auto; }
  body {
    background: #fff !important;
    color: #000 !important;
    font-family: "Microsoft YaHei", "PingFang SC", "SimHei", "Noto Sans SC", sans-serif !important;
  }
  body::before { display: none !important; }

  /* Reset all font-family declarations to safe system fonts */
  h1, h2, h3, h4, h5, h6 {
    font-family: "Microsoft YaHei", "PingFang SC", "SimHei", "Noto Serif SC", serif !important;
  }

  .print-btn,
  .mini-nav { display: none !important; }

  .container { padding: 0 !important; max-width: 100% !important; }
  section { padding: 20px 0 !important; break-inside: avoid; page-break-inside: avoid; }

  .dark-section {
    background: #fff !important;
    color: #000 !important;
    margin: 0 !important;
    padding: 20px 0 !important;
    border: 1px solid #ddd;
  }
  .dark-section .section-title { color: #000 !important; }
  .section-subtitle {
    margin-top: 4px !important;
    margin-bottom: 16px !important;
  }

  .matrix-container,
  .manifesto-grid,
  .safety-grid,
  .budget-grid {
    display: block !important;
  }
  .matrix-card,
  .manifesto-item,
  .safety-card,
  .budget-block {
    margin-bottom: 16px !important;
    page-break-inside: avoid;
  }

  .tier-wrapper { background: #fff !important; border: 1px solid #ddd !important; padding: 16px !important; margin-top: 0 !important; }
  .tier-row { display: block !important; background: #fff !important; border: 1px solid #eee !important; box-shadow: none !important; padding: 16px !important; margin-bottom: 12px !important; page-break-inside: avoid; }
  .tier-meta, .tier-content, .tier-pain { margin-bottom: 10px !important; }
  .tier-pain { border-left: none !important; padding-left: 0 !important; border-top: 1px dashed #ccc !important; padding-top: 8px !important; }

  .arch-flow { display: block !important; }
  .arch-node { margin-bottom: 12px !important; page-break-inside: avoid; }

  .conclusion-box { border: 1px solid #ccc !important; padding: 20px !important; }
  .special-architecture { border: 1px solid #ccc !important; padding: 20px !important; }
  .quote-box { border-left: 2px solid #999 !important; }

  /* CRITICAL: Force all reveal-animated elements visible in print */
  .reveal,
  .reveal.visible {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .reveal-delay-1,
  .reveal-delay-2,
  .reveal-delay-3,
  .reveal-delay-4 {
    transition-delay: 0s !important;
  }

  /* Typography: slightly smaller with generous line-height to prevent overlap */
  h1 { font-size: 1.4rem !important; line-height: 1.5 !important; margin-bottom: 12px !important; }
  h2 { font-size: 1.25rem !important; line-height: 1.5 !important; margin-bottom: 12px !important; }
  h3 { font-size: 1.1rem !important; line-height: 1.5 !important; margin-bottom: 10px !important; }
  h4 { font-size: 1rem !important; line-height: 1.5 !important; margin-bottom: 8px !important; }
  h5 { font-size: 0.95rem !important; line-height: 1.5 !important; margin-bottom: 6px !important; }
  p, li, td, th, div, span {
    font-size: 0.88rem !important;
    line-height: 1.7 !important;
  }

  /* Prevent inline elements from overlapping */
  strong, em, b, i {
    line-height: inherit !important;
  }

  /* Ensure tables don't overflow */
  table { width: 100% !important; font-size: 0.85rem !important; }
  td, th { padding: 8px !important; line-height: 1.5 !important; }

  a { text-decoration: none !important; color: #000 !important; }

  /* Override dark-section text colors for print (white bg) */
  .safety-card p { color: #333 !important; }
  .node-list { color: #555 !important; }
}