/* =========================================================
   CASTI — Shared styles
   Pure white + red. Clinical, modern, premium.
   ========================================================= */

:root {
  /* Base neutrals — warm editorial whites, deep ink */
  --bg-0: #FFFFFF;          /* page */
  --bg-1: #F7F5F1;          /* warm paper band — sections */
  --bg-2: #F1EEE8;          /* placeholders / cards */
  --bg-3: #E4E0D7;          /* hovers / dividers heavy */
  --line: rgba(20,16,10,0.10);
  --line-strong: rgba(20,16,10,0.22);
  --fg-0: #111111;          /* primary text */
  --fg-1: #353033;          /* secondary */
  --fg-2: #6A6560;          /* meta */
  --fg-3: #9A948D;          /* tertiary */

  /* Accent — Red (brand) */
  --accent: #D62839;
  --accent-soft: rgba(214,40,57,0.08);
  --accent-line: rgba(214,40,57,0.40);
  --accent-fg: #FFFFFF;

  /* Type */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-display: "Fraunces", "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --max: 1320px;
  --gutter: clamp(20px, 4vw, 56px);
}

[data-accent="amber"] {
  --accent: #F59E2C;
  --accent-soft: rgba(245,158,44,0.12);
  --accent-line: rgba(245,158,44,0.35);
  --accent-fg: #0A0B0D;
}
[data-accent="crimson"] {
  --accent: #B8121A;
  --accent-soft: rgba(184,18,26,0.14);
  --accent-line: rgba(184,18,26,0.40);
  --accent-fg: #FFFFFF;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body {
  background: var(--bg-0);
  color: var(--fg-0);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body { overflow-x: hidden; }

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg { display: block; max-width: 100%; }

/* =========================================================
   Typography
   ========================================================= */
.display {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: -0.02em;
  line-height: 0.95;
  text-wrap: balance;
}
.mono { font-family: var(--font-mono); letter-spacing: 0.04em; text-transform: uppercase; font-size: 11px; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.eyebrow .dot {
  display: inline-block; width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%;
  vertical-align: middle; margin-right: 10px;
}

h1,h2,h3,h4 { font-weight: 500; letter-spacing: -0.01em; }

/* =========================================================
   Navigation
   ========================================================= */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 18px var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(10,10,12,0.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background .35s ease, border-color .35s ease, padding .35s ease;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav.scrolled {
  background: rgba(10,10,12,0.85);
  border-bottom: 1px solid rgba(255,255,255,0.12);
  padding: 12px var(--gutter);
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.22em;
  text-transform: uppercase; font-weight: 500;
}
.nav-logo-mark {
  width: 22px; height: 22px; position: relative;
  border: 1.5px solid var(--fg-0); border-radius: 2px;
  display: grid; place-items: center;
}
.nav-logo-mark::before {
  content: ""; width: 6px; height: 6px;
  background: var(--accent);
}
.nav-links { display: flex; gap: 32px; font-size: 13px; color: var(--fg-1); }
.nav-links a { position: relative; padding: 6px 0; transition: color .2s; }
.nav-links a:hover { color: var(--fg-0); }
.nav-links a.active { color: var(--fg-0); }
.nav-links a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -4px;
  height: 1px; background: var(--accent);
}
.nav-cta {
  font-size: 12px; font-family: var(--font-mono); letter-spacing: 0.14em;
  text-transform: uppercase;
  padding: 10px 18px;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  transition: all .2s;
}
.nav-cta:hover { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }

/* On-dark variant (transparent over dark hero) */
.nav.on-dark:not(.scrolled) {
  color: #fff;
}
.nav.on-dark:not(.scrolled) .nav-logo { color: #fff; }
.nav.on-dark:not(.scrolled) .nav-logo-mark { border-color: rgba(255,255,255,0.9); }
.nav.on-dark:not(.scrolled) .nav-links { color: rgba(255,255,255,0.82); }
.nav.on-dark:not(.scrolled) .nav-links a:hover,
.nav.on-dark:not(.scrolled) .nav-links a.active { color: #fff; }
.nav.on-dark:not(.scrolled) .nav-cta {
  color: #fff; border-color: rgba(255,255,255,0.5);
}
.nav.on-dark:not(.scrolled) .nav-cta:hover {
  background: #fff; color: var(--fg-0); border-color: #fff;
}

/* Dark nav — always-dark text treatment */
.nav .nav-logo,
.nav.scrolled .nav-logo { color: #fff; }
.nav .nav-logo-mark,
.nav.scrolled .nav-logo-mark { border-color: rgba(255,255,255,0.9); }
.nav .nav-links,
.nav.scrolled .nav-links { color: rgba(255,255,255,0.8); }
.nav .nav-links a:hover,
.nav .nav-links a.active,
.nav.scrolled .nav-links a:hover,
.nav.scrolled .nav-links a.active { color: #fff; }
.nav .nav-cta,
.nav.scrolled .nav-cta {
  color: #fff; border-color: rgba(255,255,255,0.45);
}
.nav .nav-cta:hover,
.nav.scrolled .nav-cta:hover {
  background: #fff; color: var(--fg-0); border-color: #fff;
}

/* Branch badge in nav */
.nav-branch {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-2);
  padding: 4px 10px; border: 1px solid var(--line);
  border-radius: 999px;
}
.nav-branch .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-size: 13px; font-family: var(--font-mono);
  letter-spacing: 0.14em; text-transform: uppercase;
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  transition: all .2s;
  cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn-primary:hover { background: transparent; color: var(--accent); }
.btn-ghost:hover { background: var(--bg-2); border-color: var(--fg-3); }
.btn .arr { transition: transform .2s; }
.btn:hover .arr { transform: translateX(4px); }

/* =========================================================
   Section scaffolding
   ========================================================= */
section { position: relative; padding: clamp(80px, 10vw, 140px) var(--gutter); }
.wrap { max-width: var(--max); margin: 0 auto; }

.section-head {
  display: grid; grid-template-columns: 1fr 2fr; gap: 80px;
  margin-bottom: 64px; align-items: end;
}
.section-head .title { font-size: clamp(40px, 5vw, 72px); }
.section-head p { color: var(--fg-1); font-size: 17px; max-width: 52ch; line-height: 1.55; }
@media (max-width: 820px) {
  .section-head { grid-template-columns: 1fr; gap: 32px; }
}

/* =========================================================
   Reveal-on-scroll
   ========================================================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .9s ease, transform .9s cubic-bezier(.2,.8,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }

/* =========================================================
   Image placeholders (striped, labeled)
   ========================================================= */
.ph {
  position: relative;
  background-color: var(--bg-2);
  background-image:
    repeating-linear-gradient(135deg,
      transparent 0, transparent 14px,
      rgba(10,10,12,0.03) 14px, rgba(10,10,12,0.03) 15px);
  border: 1px solid var(--line);
  overflow: hidden;
}
.ph::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(10,10,12,0.03), transparent 50%),
    radial-gradient(ellipse at 80% 80%, var(--accent-soft), transparent 55%);
}
.ph-label {
  position: absolute; top: 14px; left: 14px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-2);
  display: flex; align-items: center; gap: 8px;
}
.ph-label::before {
  content: ""; width: 5px; height: 5px; background: var(--accent); border-radius: 50%;
}
.ph-corner {
  position: absolute; bottom: 14px; right: 14px;
  font-family: var(--font-mono); font-size: 9px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--fg-3);
}
.ph-center {
  position: absolute; inset: 0; display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-2);
  text-align: center; padding: 24px;
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
  border-top: 1px solid var(--line);
  padding: 80px var(--gutter) 40px;
  background: var(--bg-1);
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  max-width: var(--max); margin: 0 auto;
}
.footer h5 {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--fg-2); margin-bottom: 20px; font-weight: 500;
}
.footer a { display: block; font-size: 14px; color: var(--fg-1); padding: 6px 0; }
.footer a:hover { color: var(--accent); }
.footer-base {
  max-width: var(--max); margin: 60px auto 0;
  padding-top: 30px; border-top: 1px solid var(--line);
  display: flex; justify-content: space-between;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--fg-3);
}
@media (max-width: 820px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-base { flex-direction: column; gap: 12px; }
}

/* =========================================================
   Utilities
   ========================================================= */
.grid-lines {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px);
  background-size: calc(100% / 6) 100%;
  opacity: 0.4;
}

.ticker {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  padding: 14px 0;
  background: var(--bg-1);
}
.ticker-track {
  display: flex; gap: 56px;
  white-space: nowrap;
  animation: ticker 48s linear infinite;
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--fg-2);
}
.ticker-track span .accent { color: var(--accent); margin-right: 10px; }
@keyframes ticker {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 0; }
::-webkit-scrollbar-thumb:hover { background: var(--fg-3); }

/* Selection */
::selection { background: var(--accent); color: var(--accent-fg); }

/* Hide/show mobile */
@media (max-width: 820px) {
  .nav-links { display: none; }
}