/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, svg, video { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; }
button { font: inherit; border: none; background: none; cursor: pointer; }
h1, h2, h3, h4, h5, h6 { overflow-wrap: break-word; }
p { overflow-wrap: break-word; }
:focus-visible { outline: 3px solid #FFD700; outline-offset: 2px; }

/* ===== CSS VARIABLES ===== */
:root {
  --color-primary: #8B0000;
  --color-primary-dark: #6B0000;
  --color-secondary: #FFD700;
  --color-secondary-dim: #C8A800;
  --color-bg: #F5E6D0;
  --color-bg-dark: #E8D5B8;
  --color-dark: #1A1A1A;
  --color-mid: #333333;
  --color-light: #B8A88A;
  --color-accent: #FF6600;
  --color-glass: rgba(255, 255, 255, 0.15);
  --color-glass-border: rgba(0, 0, 0, 0.1);
  --color-glass-strong: rgba(255, 255, 255, 0.30);
  --font-heading: Impact, 'Arial Black', sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-number: 'Courier New', Consolas, 'Liberation Mono', monospace;
  --font-mono: 'Courier New', Consolas, monospace;
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --max-width: 1200px;
  --header-height: 70px;
  --border-radius: 4px;
  --shadow-card: 0 4px 20px rgba(0,0,0,0.08);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.15);
  --transition-fast: 0.2s ease;
  --transition-med: 0.35s ease;
  --transition-slow: 0.5s ease;
}

/* ===== BASE TYPOGRAPHY ===== */
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--color-dark);
  background-color: var(--color-bg);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 31px, rgba(139,0,0,0.04) 31px, rgba(139,0,0,0.04) 32px),
    repeating-linear-gradient(90deg, transparent, transparent 31px, rgba(139,0,0,0.04) 31px, rgba(139,0,0,0.04) 32px);
  background-size: 32px 32px;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  letter-spacing: 0.04em;
  line-height: 1.1;
  color: var(--color-dark);
}
h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }
p { margin-bottom: var(--space-md); line-height: 1.8; }
a { color: var(--color-primary); transition: color var(--transition-fast); }
a:hover { color: var(--color-secondary); }
::selection { background: var(--color-primary); color: var(--color-secondary); }

/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 10000;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-dark);
  color: var(--color-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  transition: top var(--transition-fast);
}
.skip-link:focus { top: 0; }

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: transparent;
  transition: background var(--transition-med), box-shadow var(--transition-med);
}
.site-header.solid {
  background: var(--color-primary);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  position: relative;
  z-index: 2;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-secondary);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  letter-spacing: 0.06em;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}
.brand .brand-mark {
  font-size: 1.8rem;
  line-height: 1;
}
.brand .brand-text {
  font-size: 1.3rem;
}
.site-header.solid .brand { color: var(--color-secondary); }
.site-header:not(.solid) .brand { color: var(--color-secondary); text-shadow: 0 2px 8px rgba(0,0,0,0.3); }

/* Navigation */
.nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: var(--space-lg); }
.nav-link {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-xs) 0;
  position: relative;
  color: var(--color-secondary);
  transition: color var(--transition-fast);
  text-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.site-header:not(.solid) .nav-link { color: var(--color-secondary); text-shadow: 0 1px 6px rgba(0,0,0,0.4); }
.site-header.solid .nav-link { color: var(--color-secondary); text-shadow: none; }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-secondary);
  transition: width var(--transition-med);
}
.nav-link:hover::after,
.nav-link[aria-current="page"]::after { width: 100%; }
.nav-link[aria-current="page"] { color: var(--color-secondary); font-weight: bold; }

/* Nav Toggle (Hamburger) */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 2px solid var(--color-secondary);
  border-radius: var(--border-radius);
  transition: background var(--transition-fast);
  z-index: 1001;
  flex-shrink: 0;
}
.nav-toggle:hover { background: rgba(255,255,255,0.1); }
.toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-secondary);
  border-radius: 2px;
  transition: transform var(--transition-med), opacity var(--transition-med);
}
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Progress Bar */
.progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-accent));
  z-index: 1002;
  transition: width 0.1s linear;
  will-change: width;
}
.site-header.solid .progress-bar { background: linear-gradient(90deg, var(--color-secondary), var(--color-accent)); }

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-dark);
  color: var(--color-light);
  padding: var(--space-xl) 0 var(--space-lg);
  border-top: 3px solid var(--color-primary);
  margin-top: var(--space-xl);
}
.site-footer .container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255,215,0,0.15);
  margin-bottom: var(--space-lg);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-secondary);
  margin-bottom: var(--space-md);
}
.footer-logo .logo-mark { font-size: 1.6rem; }
.footer-desc { font-size: 0.9rem; line-height: 1.7; color: var(--color-light); margin-bottom: var(--space-md); }
.footer-trust { font-size: 0.8rem; color: rgba(255,215,0,0.6); font-style: italic; border-left: 2px solid var(--color-primary); padding-left: var(--space-md); }
.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--color-secondary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(255,215,0,0.15);
}
.footer-list li { margin-bottom: var(--space-sm); }
.footer-list a {
  color: var(--color-light);
  font-size: 0.9rem;
  transition: color var(--transition-fast);
  position: relative;
  padding-left: var(--space-sm);
}
.footer-list a::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}
.footer-list a:hover { color: var(--color-secondary); }
.contact-list a { padding-left: 0; }
.contact-list a::before { display: none; }
.contact-list li { font-size: 0.85rem; color: var(--color-light); }
.contact-label { color: var(--color-secondary); font-weight: 600; margin-right: var(--space-xs); }
.contact-note { color: var(--color-primary); font-size: 0.8rem; margin-top: var(--space-sm); font-style: italic; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
  padding-top: var(--space-md);
  font-size: 0.8rem;
  color: var(--color-mid);
}
.footer-icp { color: var(--color-light); letter-spacing: 0.02em; }
.footer-copy { color: var(--color-light); }

/* ===== CONTAINER & GRID ===== */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-lg); }
.grid { display: grid; gap: var(--space-lg); }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: 1fr 1fr 1fr; }
.grid-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }

/* ===== SECTION ===== */
.section { padding: var(--space-xl) 0; }
.section-light { background: var(--color-bg); }
.section-dark { background: var(--color-dark); color: var(--color-light); }
.section-dark h1, .section-dark h2, .section-dark h3 { color: var(--color-secondary); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  cursor: pointer;
  min-height: 44px;
  line-height: 1;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-secondary);
  border: 2px solid var(--color-primary);
}
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-secondary); color: var(--color-secondary); transform: translateY(-2px); box-shadow: 0 4px 16px rgba(139,0,0,0.3); }
.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary); color: var(--color-secondary); transform: translateY(-2px); }

/* ===== SECTION NUMBER ===== */
.section-number {
  font-family: var(--font-number);
  font-size: 3.5rem;
  font-weight: bold;
  line-height: 1;
  color: var(--color-primary);
  display: block;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.02em;
}
.section-dark .section-number { color: var(--color-secondary); }

/* ===== FRAME VIEWPORT ===== */
.frame-viewport {
  position: relative;
  border: 2px solid var(--color-primary);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
  background: var(--color-glass);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.frame-viewport::before,
.frame-viewport::after {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  border-color: var(--color-secondary);
  border-style: solid;
}
.frame-viewport::before { top: -2px; left: -2px; border-width: 3px 0 0 3px; }
.frame-viewport::after { bottom: -2px; right: -2px; border-width: 0 3px 3px 0; }
.frame-viewport .frame-inner { position: relative; z-index: 1; }

/* ===== DATA CARD ===== */
.data-card {
  background: var(--color-glass-strong);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-med), box-shadow var(--transition-med);
}
.data-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
.card-title { font-family: var(--font-heading); font-size: 0.8rem; letter-spacing: 0.1em; color: var(--color-mid); text-transform: uppercase; margin-bottom: var(--space-sm); }
.card-value { font-family: var(--font-number); font-size: 2.5rem; font-weight: bold; color: var(--color-primary); line-height: 1.1; }
.card-label { font-size: 0.85rem; color: var(--color-mid); margin-top: var(--space-xs); }

/* ===== GLASS PANEL ===== */
.glass-panel {
  background: var(--color-glass);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-mid);
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) 0;
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb a:hover { color: var(--color-secondary); }
.breadcrumb .separator { color: var(--color-light); margin: 0 var(--space-xs); }
.breadcrumb .current { color: var(--color-mid); font-weight: 600; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-lg); }
}

@media (max-width: 768px) {
  .header-inner { padding: 0 var(--space-md); }
  .brand { font-size: 1.1rem; }
  .brand .brand-mark { font-size: 1.4rem; }
  .brand .brand-text { font-size: 1.1rem; }
  
  .nav {
    position: fixed;
    top: var(--header-height);
    right: -100%;
    width: 80%;
    max-width: 360px;
    height: calc(100vh - var(--header-height));
    background: var(--color-primary);
    padding: var(--space-lg);
    transition: right var(--transition-med);
    box-shadow: -4px 0 30px rgba(0,0,0,0.4);
    z-index: 999;
    border-left: 2px solid var(--color-secondary);
  }
  .nav[data-open] { right: 0; }
  .nav-list { flex-direction: column; gap: var(--space-md); }
  .nav-link { font-size: 1rem; padding: var(--space-sm) 0; border-bottom: 1px solid rgba(255,215,0,0.15); }
  .nav-link[aria-current="page"] { border-bottom-color: var(--color-secondary); }
  
  .nav-toggle { display: flex; }
  .site-header { height: 60px; }
  :root { --header-height: 60px; }
  
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-trust { margin-top: var(--space-sm); }
  
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  
  .section-number { font-size: 2.5rem; }
  .frame-viewport { padding: var(--space-md); }
  .data-card { padding: var(--space-md); }
  .card-value { font-size: 1.8rem; }
  
  .container { padding: 0 var(--space-md); }
  .section { padding: var(--space-lg) 0; }
}

@media (max-width: 480px) {
  .nav { width: 100%; max-width: none; }
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.7rem; }
  .brand { font-size: 1rem; }
  .brand .brand-mark { font-size: 1.2rem; }
  .brand .brand-text { font-size: 1rem; }
}

/* ===== ACCESSIBILITY & MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .site-header { transition: none; }
  .nav { transition: none; }
  .progress-bar { transition: none; }
  .data-card:hover { transform: none; }
  .btn:hover { transform: none; }
}

/* ===== OVERLAY FOR MOBILE NAV ===== */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 998;
}
.nav-overlay.active { display: block; }
@media (max-width: 768px) {
  .nav-overlay.active { display: block; }
}

/* ===== UTILITY ===== */
.text-gold { color: var(--color-secondary); }
.text-primary { color: var(--color-primary); }
.text-center { text-align: center; }
.mt-lg { margin-top: var(--space-lg); }
.mb-lg { margin-bottom: var(--space-lg); }
.p-lg { padding: var(--space-lg); }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }