/* ===== Reset ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; line-height: 1.6; -webkit-font-smoothing: antialiased; }
img, svg { display: block; max-width: 100%; }
ul, ol { list-style: none; }
a { text-decoration: none; color: inherit; }
button { font: inherit; color: inherit; border: none; background: none; cursor: pointer; }
:focus-visible { outline: 2px solid #F4A261; outline-offset: 2px; }

/* ===== CSS Variables ===== */
:root {
  --primary-red: #E63946;
  --primary-blue: #1D3557;
  --accent-gold: #F4A261;
  --dark-bg: #0B0C10;
  --dark-surface: #1F2833;
  --light-text: #FFFFFF;
  --dim-text: #B0B0B0;
  --data-green: #2ECC71;
  --card-border: #3E4A56;
  --heading-font: Impact, 'Arial Black', sans-serif;
  --body-font: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --mono-font: 'Courier New', Consolas, monospace;
  --rail-width: 200px;
  --header-top-height: 56px;
  --transition-speed: 0.3s;
}

/* ===== Typography ===== */
body { font-family: var(--body-font); font-weight: 400; color: var(--light-text); background: var(--dark-bg); }
h1, h2, h3, h4, h5, h6 { font-family: var(--heading-font); font-weight: 700; line-height: 1.2; }
code, pre, .mono { font-family: var(--mono-font); }

/* ===== Skip Link ===== */
.skip-link { position: absolute; top: -100%; left: 0; z-index: 9999; padding: 8px 16px; background: var(--accent-gold); color: var(--dark-bg); font-weight: 700; border-radius: 0 0 4px 0; transition: top 0.2s; }
.skip-link:focus { top: 0; }

/* ===== Progress Bar ===== */
.progress-bar { position: fixed; top: 0; left: 0; width: 0%; height: 3px; background: var(--primary-red); z-index: 9998; transition: width 0.1s linear; will-change: width; }

/* ===== Header Layout ===== */
.site-header { position: relative; background: var(--dark-bg); border-bottom: 1px solid var(--card-border); }
.header-layout { display: flex; align-items: stretch; min-height: var(--header-top-height); }

/* ===== Side Rail ===== */
.side-rail { width: var(--rail-width); background: var(--dark-surface); display: flex; flex-direction: column; border-right: 1px solid var(--card-border); flex-shrink: 0; transition: transform var(--transition-speed) ease, opacity var(--transition-speed) ease; }
.rail-brand { padding: 20px 16px 12px; text-align: center; border-bottom: 1px solid var(--card-border); }
.rail-logo { font-family: var(--heading-font); font-size: 28px; color: var(--accent-gold); letter-spacing: 2px; display: block; }
.rail-tagline { font-size: 11px; color: var(--dim-text); letter-spacing: 1px; margin-top: 2px; display: block; }
.rail-nav { flex: 1; padding: 16px 0; }
.rail-nav-item { border-left: 3px solid transparent; transition: border-color var(--transition-speed), background var(--transition-speed); }
.rail-nav-item a { display: block; padding: 10px 16px; font-size: 14px; color: var(--dim-text); transition: color var(--transition-speed); letter-spacing: 0.5px; }
.rail-nav-item a:hover { color: var(--light-text); }
.rail-nav-item a[aria-current="page"] { color: var(--primary-red); font-weight: 700; }
.rail-nav-item:has(a[aria-current="page"]) { border-left-color: var(--primary-red); background: rgba(230, 57, 70, 0.08); }
.rail-footer { padding: 12px 16px; border-top: 1px solid var(--card-border); text-align: center; }
.rail-slogan { font-size: 10px; color: var(--dim-text); letter-spacing: 1px; text-transform: uppercase; }

/* ===== Header Top ===== */
.header-top { flex: 1; display: flex; align-items: center; padding: 0 24px; gap: 16px; min-height: var(--header-top-height); background: var(--dark-bg); }
.header-logo { font-family: var(--heading-font); font-size: 20px; color: var(--light-text); letter-spacing: 1px; margin-right: auto; }
.header-logo:hover { color: var(--accent-gold); }
.header-cta { display: inline-flex; align-items: center; gap: 4px; padding: 6px 16px; background: var(--primary-red); color: var(--light-text); font-size: 13px; font-weight: 700; border-radius: 4px; transition: background var(--transition-speed); letter-spacing: 0.5px; }
.header-cta:hover { background: #c5303c; }

/* ===== Nav Toggle ===== */
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 4px; width: 36px; height: 36px; padding: 6px; border-radius: 4px; transition: background var(--transition-speed); }
.nav-toggle:hover { background: var(--dark-surface); }
.toggle-line { display: block; width: 100%; height: 2px; background: var(--light-text); border-radius: 1px; transition: transform var(--transition-speed), opacity var(--transition-speed); }
.nav-toggle[aria-expanded="true"] .toggle-line:nth-child(1) { transform: translateY(6px) 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(-6px) rotate(-45deg); }

/* ===== Nav Overlay ===== */
.nav-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 998; opacity: 0; transition: opacity var(--transition-speed); pointer-events: none; }

/* ===== Footer ===== */
.site-footer { background: var(--dark-surface); border-top: 1px solid var(--card-border); padding: 40px 0 24px; margin-top: 60px; }
.footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1fr 2fr; gap: 32px; }
.footer-brand { display: flex; flex-direction: column; gap: 8px; }
.footer-logo { font-family: var(--heading-font); font-size: 22px; color: var(--accent-gold); letter-spacing: 1px; }
.footer-logo:hover { color: var(--light-text); }
.footer-tagline { font-size: 13px; color: var(--dim-text); }
.footer-info { display: flex; flex-direction: column; gap: 16px; }
.footer-contact { display: flex; flex-direction: column; gap: 4px; }
.contact-item { font-size: 13px; color: var(--dim-text); line-height: 1.8; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 16px; padding-top: 8px; border-top: 1px solid var(--card-border); }
.footer-link { font-size: 13px; color: var(--dim-text); transition: color var(--transition-speed); }
.footer-link:hover { color: var(--primary-red); }
.footer-bottom { grid-column: 1 / -1; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px 16px; padding-top: 16px; border-top: 1px solid var(--card-border); margin-top: 8px; }
.footer-icp { font-size: 11px; color: var(--dim-text); }
.footer-trust { font-size: 11px; color: var(--dim-text); max-width: 500px; text-align: center; }
.footer-copy { font-size: 11px; color: var(--dim-text); }

/* ===== General Utilities ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 48px 0; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.text-red { color: var(--primary-red); }
.text-gold { color: var(--accent-gold); }
.text-blue { color: var(--primary-blue); }
.text-dim { color: var(--dim-text); }
.bg-surface { background: var(--dark-surface); }
.bg-dark { background: var(--dark-bg); }
.border-card { border: 1px solid var(--card-border); border-radius: 4px; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .side-rail { position: fixed; top: 0; left: 0; width: var(--rail-width); height: 100%; z-index: 999; transform: translateX(-100%); opacity: 0; pointer-events: none; border-right: 2px solid var(--primary-red); box-shadow: 4px 0 20px rgba(0,0,0,0.5); }
  .side-rail[data-open] { transform: translateX(0); opacity: 1; pointer-events: auto; }
  .nav-toggle { display: flex; }
  .nav-overlay[data-open] { display: block; opacity: 1; pointer-events: auto; }
  .header-top { padding: 0 16px; }
  .header-logo { font-size: 17px; }
  .header-cta { font-size: 12px; padding: 5px 12px; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-trust { max-width: 100%; }
  .rail-nav-item a { padding: 12px 20px; font-size: 15px; }
  .rail-brand { padding: 24px 16px 16px; }
  .rail-logo { font-size: 32px; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .side-rail { width: 160px; }
  .rail-nav-item a { padding: 8px 12px; font-size: 13px; }
  .header-top { padding: 0 16px; }
  .footer-inner { gap: 24px; }
}

@media (min-width: 769px) {
  .nav-toggle { display: none; }
  .nav-overlay { display: none !important; }
  .side-rail { transform: none; opacity: 1; pointer-events: auto; position: relative; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
  .progress-bar { transition: none; }
  .side-rail { transition: none; }
  .nav-overlay { transition: none; }
}