/* TripScan — Marcus Vane structural language + technical-showcase composition
   Palette: graphite-electric-blue | Type: serif display + sans body (system stacks) */

:root {
  --gl-bg: #12151c;
  --gl-bg-alt: #0c0e14;
  --gl-surface: #181c26;
  --gl-surface-raised: #1f2430;
  --gl-ink: #e9ecf2;
  --gl-ink-muted: #8b93a7;
  --gl-ink-subtle: #5c6478;
  --gl-accent: #2b7fff;
  --gl-accent-ink: #081018;
  --gl-line: rgba(233, 236, 242, 0.1);
  --gl-line-strong: rgba(233, 236, 242, 0.22);
  --gl-glow: #5ca0ff;

  --font-display: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", "SF Mono", Menlo, Consolas, monospace;

  --gutter: clamp(1rem, 3vw, 2.5rem);
  --rail-w: clamp(15rem, 18vw, 17.5rem);
  --section-y: clamp(3.5rem, 7vw, 6rem);
  --radius: 2px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 0.32s;
  --hero-visual-max-h: min(55vh, 50vw);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--gl-bg);
  color: var(--gl-ink);
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  background: var(--gl-bg);
  min-height: 100vh;
}

img, svg { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }

.page-shell {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100vh;
}

@media (min-width: 1100px) {
  .page-shell {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    max-width: 2160px;
    margin: 0 auto;
  }
}

.site-rail {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--gl-bg-alt);
  border-bottom: 1px solid var(--gl-line);
}

@media (min-width: 1100px) {
  .site-rail {
    min-height: 100vh;
    border-bottom: none;
    border-right: 1px solid var(--gl-line);
    align-self: start;
  }
}

.rail-inner {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding: 1rem var(--gutter);
}

@media (min-width: 1100px) {
  .rail-inner {
    min-height: 100vh;
    padding: 1.75rem 1.25rem;
    justify-content: space-between;
  }
}

.rail-header .rail-brand-row,
.header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.25rem;
}

@media (min-width: 1100px) {
  .rail-header .rail-brand-row,
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand-logo {
  flex: 0 0 auto;
  width: 3rem;
  height: 3rem;
  max-width: 64px;
  max-height: 64px;
  border: 1px solid var(--gl-line-strong);
  border-radius: 999px;
  background:
    linear-gradient(135deg, transparent 46%, var(--gl-line) 46%, var(--gl-line) 54%, transparent 54%),
    radial-gradient(circle at 35% 35%, var(--gl-glow) 0%, transparent 55%),
    var(--gl-surface);
  position: relative;
}

.brand-logo::after {
  content: "";
  position: absolute;
  inset: 0.45rem;
  border: 1px solid rgba(43, 127, 255, 0.35);
  border-radius: 999px;
}

.brand small {
  display: block;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gl-ink-muted);
  font-weight: 500;
  margin-top: 0.15rem;
}

.site-rail nav,
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1.25rem;
}

@media (min-width: 1100px) {
  .site-rail nav,
  .site-header nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
  }
}

.site-rail nav a,
.site-header nav a {
  position: relative;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gl-ink-muted);
  transition: color var(--dur) var(--ease);
}

.site-rail nav a::after,
.site-header nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.25rem;
  width: 0;
  height: 1px;
  background: var(--gl-accent);
  transition: width var(--dur) var(--ease);
}

.site-rail nav a:hover,
.site-header nav a:hover,
.site-rail nav a:focus-visible,
.site-header nav a:focus-visible {
  color: var(--gl-ink);
}

.site-rail nav a:hover::after,
.site-header nav a:hover::after { width: 100%; }

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.1rem;
  background: var(--gl-accent);
  color: var(--gl-accent-ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.header-cta:hover,
.header-cta:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 0 24px rgba(43, 127, 255, 0.35);
}

.page-canvas {
  min-width: 0;
  background:
    linear-gradient(var(--gl-line) 1px, transparent 1px) 0 0 / 100% 2.5rem,
    linear-gradient(90deg, var(--gl-line) 1px, transparent 1px) 0 0 / 2.5rem 100%,
    var(--gl-bg);
}

main { overflow-x: clip; }

.section-inner {
  width: min(100% - var(--gutter) * 2, 72rem);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Hero — technical showcase split */
.showcase-hero {
  padding: clamp(2rem, 5vw, 3.5rem) 0 clamp(2.5rem, 6vw, 4rem);
  border-bottom: 1px solid var(--gl-line);
}

.showcase-hero .section-inner.hero-grid {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

@media (min-width: 900px) {
  .showcase-hero .section-inner.hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(2rem, 4vw, 4rem);
  }
}

@media (min-width: 1440px) {
  .showcase-hero .section-inner.hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 42%);
    max-width: min(100% - var(--gutter) * 2, 82rem);
  }
}

.hero-copy { max-width: 42rem; }

.eyebrow,
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gl-ink-muted);
}

.eyebrow::before,
.section-kicker::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--gl-accent);
  flex-shrink: 0;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0.75rem 0 0;
}

h1 { font-size: clamp(2.25rem, 5.5vw, 4.25rem); max-width: 14ch; }
h2 { font-size: clamp(1.75rem, 3.8vw, 3rem); }
h3 { font-size: clamp(1.15rem, 2vw, 1.45rem); }

.lead, .section-heading > p, .hero-copy .lead {
  margin-top: 1.25rem;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  line-height: 1.55;
  color: var(--gl-ink-muted);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.35rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.button-primary {
  background: var(--gl-accent);
  color: var(--gl-accent-ink);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 0 28px rgba(43, 127, 255, 0.4);
}

.button-secondary {
  background: transparent;
  color: var(--gl-ink);
  border-color: var(--gl-line-strong);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--gl-accent);
  color: var(--gl-accent);
}

.geo-line {
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gl-ink-subtle);
}

.hero-visual {
  position: relative;
  width: 100%;
  max-height: var(--hero-visual-max-h);
  aspect-ratio: 16 / 11;
  border: 1px solid var(--gl-line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(43, 127, 255, 0.06), transparent 40%),
    repeating-linear-gradient(90deg, rgba(233, 236, 242, 0.04) 0 1px, transparent 1px 3rem),
    var(--gl-surface-raised);
  overflow: hidden;
  clip-path: inset(0 round var(--radius));
}

@media (max-width: 899px) {
  .hero-visual {
    max-height: min(38vh, 50vw);
  }
}

@media (min-width: 900px) and (max-width: 1099px) {
  .hero-visual {
    max-height: min(44vh, 42vw);
  }
}

/* Sections */
.showcase-panel {
  padding-block: var(--section-y);
  border-bottom: 1px solid var(--gl-line);
}

.section-heading {
  margin-bottom: clamp(1.75rem, 4vw, 2.75rem);
  max-width: 46rem;
}

.section-heading .section-kicker {
  margin-bottom: 0.5rem;
}

/* Cards grid — Marcus Vane venture rhythm */
.cards-grid {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.5rem);
  grid-template-columns: 1fr;
}

@media (min-width: 700px) {
  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1100px) {
  .cards-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.card {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  padding: 1.35rem 1.25rem 1.5rem;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius);
  min-height: 100%;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.card:hover {
  border-color: rgba(43, 127, 255, 0.45);
  transform: translateY(-2px);
}

.card-icon {
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--gl-line-strong);
  border-radius: var(--radius);
  background: var(--gl-surface-raised);
  position: relative;
}

.card-icon::before {
  content: "";
  position: absolute;
  inset: 0.45rem;
  background: var(--gl-accent);
  opacity: 0.85;
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.card-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gl-accent);
}

.card p { margin: 0; color: var(--gl-ink-muted); font-size: 0.98rem; }
.card small {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gl-ink-subtle);
}

/* Geography chips — instrument panel */
.geo-chips {
  display: grid;
  gap: 1px;
  background: var(--gl-line);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 800px) {
  .geo-chips {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.geo-chip {
  padding: 1.35rem 1.25rem;
  background: var(--gl-surface);
}

.geo-chip strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.65rem;
}

.geo-chip span {
  color: var(--gl-ink-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Guide chapters */
.guide-body {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--gl-line);
}

.chapter {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--gl-line);
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 900px) {
  .chapter {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    column-gap: 2.5rem;
    align-items: start;
  }
}

.chapter h3 { margin: 0; font-size: 1.35rem; }
.chapter p { margin: 0; color: var(--gl-ink-muted); }
.chapter ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--gl-ink-muted);
}

.chapter ul li + li { margin-top: 0.35rem; }

/* Process — stats ledger */
.process-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--gl-line);
}

@media (min-width: 900px) {
  .process-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.process-list li {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  padding: 1.5rem 1rem 1.75rem 0;
  border-bottom: 1px solid var(--gl-line);
}

@media (min-width: 900px) {
  .process-list li {
    border-bottom: none;
    border-right: 1px solid var(--gl-line);
    padding: 1.75rem 1.25rem;
  }
  .process-list li:last-child { border-right: none; }
}

.step-icon {
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--gl-accent);
  border-radius: var(--radius);
  opacity: 0.9;
}

.process-list h3 { margin: 0; font-size: 1.05rem; }
.process-list p { margin: 0; font-size: 0.92rem; color: var(--gl-ink-muted); }

/* FAQ accordion */
.faq-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--gl-line);
}

.faq-list details {
  border-bottom: 1px solid var(--gl-line);
  padding: 0;
  background: var(--gl-surface);
}

.faq-list summary {
  cursor: pointer;
  list-style: none;
  padding: 1.15rem 1rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list details[open] summary {
  color: var(--gl-accent);
  border-bottom: 1px solid var(--gl-line);
}

.faq-list details p {
  margin: 0;
  padding: 1rem;
  color: var(--gl-ink-muted);
  font-size: 0.96rem;
}

/* Contact */
.contact-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .contact-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }
}

.contact-form {
  display: grid;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius);
}

.contact-form label {
  display: grid;
  gap: 0.4rem;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gl-ink-muted);
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--gl-line-strong);
  border-radius: var(--radius);
  background: var(--gl-bg-alt);
  color: var(--gl-ink);
  font: inherit;
}

.contact-form textarea { min-height: 6rem; resize: vertical; }

.tripscan-disclaimer {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--gl-ink-subtle);
}

.form-message {
  font-size: 0.9rem;
  color: var(--gl-accent);
}

/* Footer */
.showcase-footer {
  padding: var(--section-y) 0 2rem;
  background: var(--gl-bg-alt);
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 800px) {
  .footer-grid {
    grid-template-columns: 1.2fr 1fr 0.8fr;
    gap: 2.5rem;
  }
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.35rem;
}

.footer-grid h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gl-ink-muted);
  margin: 0 0 0.85rem;
}

.footer-grid a {
  display: block;
  font-size: 0.92rem;
  color: var(--gl-ink-muted);
  padding: 0.2rem 0;
}

.footer-grid a:hover { color: var(--gl-accent); }

.footer-coverage {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--gl-ink-subtle);
}

/* Reveal — static below fold; motion only in hero scene iframe */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}