/* TripScan variant 1 — Aerra / technical-showcase / slate-amber */

:root {
  --gl-bg: #f1f5f9;
  --gl-bg-alt: #e2e8f0;
  --gl-surface: #ffffff;
  --gl-ink: #0f172a;
  --gl-muted: #64748b;
  --gl-accent: #d97706;
  --gl-accent-soft: #fbbf24;
  --gl-line: #cbd5e1;
  --gl-rail: #1e293b;
  --gl-rail-ink: #f8fafc;
  --font-display: "Segoe UI", Candara, "Trebuchet MS", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Segoe UI", Candara, "Trebuchet MS", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", monospace;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-soft: 0 18px 48px rgba(15, 23, 42, 0.08);
  --page-max: 1440px;
  --rail-w: 280px;
  --hero-max-h: 55vh;
  --hero-max-area: 50%;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.62;
  color: var(--gl-ink);
  background: var(--gl-bg);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, p, ul, ol { margin: 0; }
ul, ol { padding: 0; list-style: none; }

.aerra-page {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
}

.aerra-rail {
  position: sticky;
  top: 0;
  align-self: start;
  min-height: 100vh;
  background: var(--gl-rail);
  color: var(--gl-rail-ink);
  border-right: 1px solid rgba(248, 250, 252, 0.08);
  z-index: 20;
}

.aerra-rail-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  padding: 1.75rem 1.5rem 2rem;
  min-height: 100vh;
}

.aerra-brand-row {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.aerra-brand-row .brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 0;
}

.aerra-brand-row .brand-logo {
  flex: 0 0 auto;
  width: 56px;
  height: 56px;
  max-width: 64px;
  max-height: 64px;
}

.aerra-brand-row .brand-logo svg {
  width: 100%;
  height: 100%;
}

.aerra-brand-row .brand > span {
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.15;
}

.aerra-brand-row .brand small {
  font-size: 0.72rem;
  font-weight: 400;
  color: #94a3b8;
  letter-spacing: 0.04em;
}

.aerra-rail nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.aerra-rail nav a {
  padding: 0.55rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  color: #cbd5e1;
  transition: background 0.2s, color 0.2s;
}

.aerra-rail nav a:hover,
.aerra-rail nav a:focus-visible {
  background: rgba(251, 191, 36, 0.12);
  color: #fff;
}

.aerra-rail-cta {
  margin-top: auto;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  background: var(--gl-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
}

.aerra-main {
  min-width: 0;
  background:
    linear-gradient(180deg, rgba(226, 232, 240, 0.45) 0%, transparent 240px),
    repeating-linear-gradient(90deg, rgba(148, 163, 184, 0.06) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, rgba(148, 163, 184, 0.05) 0 1px, transparent 1px 56px),
    var(--gl-bg);
}

.aerra-canvas {
  width: min(100%, var(--page-max));
  margin: 0 auto;
  padding: clamp(1rem, 2vw, 2rem);
}

/* Hero — technical showcase */
.hero {
  position: relative;
  isolation: isolate;
  margin-bottom: clamp(2rem, 4vw, 3.5rem);
}

.hero-showcase {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: clamp(1rem, 2.5vw, 2rem);
  align-items: stretch;
}

.hero-copy-stack {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.25rem;
  padding: clamp(1rem, 2vw, 1.75rem) 0;
}

.hero-rail-line {
  width: 48px;
  height: 3px;
  background: var(--gl-accent);
  border-radius: 999px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gl-accent);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 3.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  font-weight: 650;
  max-width: 14ch;
}

.lead {
  font-size: clamp(1rem, 1.35vw, 1.12rem);
  color: var(--gl-muted);
  max-width: 42ch;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid transparent;
  cursor: pointer;
}

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

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

.geo-line {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--gl-muted);
}

.hero-visual-wrap {
  display: flex;
  align-items: stretch;
}

.hero-visual {
  position: relative;
  isolation: isolate;
  width: 100%;
  min-height: clamp(220px, 38vh, 420px);
  max-height: var(--hero-max-h);
  max-width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--gl-line);
  background:
    radial-gradient(circle at 55% 48%, rgba(251, 191, 36, 0.14), transparent 58%),
    linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  box-shadow: var(--shadow-soft);
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(0deg, rgba(148, 163, 184, 0.08) 0 1px, transparent 1px 24px);
  pointer-events: none;
  opacity: 0.35;
}

/* Integrator bridge */
.hero { position: relative; isolation: isolate; }
.hero-visual { position: relative; isolation: isolate; }
.design-lab-visual {
  position: absolute !important;
  inset: 0 !important;
  display: block !important;
  overflow: hidden;
  pointer-events: none;
  z-index: 2;
}
.design-lab-scene,
.design-lab-poster {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  border: 0 !important;
}
.design-lab-scene { display: block !important; }
.design-lab-poster { display: block !important; object-fit: cover !important; }
.design-lab-has-scene .design-lab-poster { display: none !important; }
.hero > .design-lab-visual { z-index: 0; }
.hero *:not(.design-lab-visual) { position: relative; z-index: 1; }

/* Sections */
.section {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
}

.section-inner {
  width: min(100%, var(--page-max));
  margin: 0 auto;
  padding: 0 clamp(1rem, 2vw, 2rem);
}

.section-heading {
  display: grid;
  gap: 0.85rem;
  max-width: 62ch;
  margin-bottom: clamp(1.5rem, 3vw, 2.25rem);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gl-accent);
}

.section h2 {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 2.15rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.section-heading p {
  color: var(--gl-muted);
}

/* Proof band */
.component-benefits .proof-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.component-benefits .card {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: grid;
  gap: 0.65rem;
  box-shadow: var(--shadow-soft);
}

/* Card grids */
.bento-grid {
  display: grid;
  gap: 1rem;
}

.bento-services {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.scenarios-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.25rem 1.35rem;
  display: grid;
  gap: 0.55rem;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: rgba(217, 119, 6, 0.35);
  transform: translateY(-2px);
}

.card-icon {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: rgba(217, 119, 6, 0.1);
  color: var(--gl-accent);
}

.card-icon svg { width: 20px; height: 20px; }

.card-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gl-muted);
}

.card h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  line-height: 1.25;
}

.card p {
  color: var(--gl-muted);
  font-size: 0.94rem;
}

.card-value {
  font-size: 0.88rem;
  color: var(--gl-ink);
}

.card small {
  color: var(--gl-muted);
  font-size: 0.78rem;
}

/* Process */
.process-bento {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.85rem;
  counter-reset: step;
}

.process-bento li {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.step-icon {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #1e293b;
  color: var(--gl-accent-soft);
}

.step-icon svg { width: 18px; height: 18px; }

.process-bento h3 {
  font-size: 0.98rem;
  line-height: 1.25;
}

.process-bento p {
  font-size: 0.86rem;
  color: var(--gl-muted);
}

/* Contact */
.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
  gap: clamp(1.25rem, 3vw, 2.5rem);
  align-items: start;
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.25rem, 3vw, 2rem);
  box-shadow: var(--shadow-soft);
}

.tripscan-disclaimer {
  margin-top: 1rem;
  font-size: 0.82rem;
  color: var(--gl-muted);
}

.contact-form {
  display: grid;
  gap: 0.85rem;
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.88rem;
}

.contact-form label span {
  font-weight: 600;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-sm);
  font: inherit;
  background: var(--gl-bg);
}

.contact-form textarea { min-height: 96px; resize: vertical; }

.form-message {
  font-size: 0.88rem;
  color: var(--gl-accent);
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.65rem;
}

.faq-list details {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
  list-style: none;
}

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

.faq-list details p {
  margin-top: 0.65rem;
  color: var(--gl-muted);
  font-size: 0.94rem;
}

/* Geography */
.geo-bento {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.geo-chip {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: grid;
  gap: 0.55rem;
}

.geo-chip strong {
  font-family: var(--font-display);
  font-size: 1rem;
}

.geo-chip span {
  color: var(--gl-muted);
  font-size: 0.92rem;
}

/* Guide */
.guide-body {
  display: grid;
  gap: 1rem;
}

.chapter {
  background: var(--gl-surface);
  border: 1px solid var(--gl-line);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.35rem;
}

.chapter h3 {
  font-family: var(--font-display);
  font-size: 1.08rem;
  margin-bottom: 0.65rem;
}

.chapter p {
  color: var(--gl-muted);
  margin-bottom: 0.75rem;
}

.chapter ul {
  list-style: disc;
  padding-left: 1.15rem;
  display: grid;
  gap: 0.35rem;
  color: var(--gl-ink);
  font-size: 0.94rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  padding: 2.5rem 0 3rem;
  background: var(--gl-rail);
  color: var(--gl-rail-ink);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.site-footer p {
  color: #94a3b8;
  font-size: 0.92rem;
  margin-top: 0.5rem;
}

.footer-coverage {
  margin-top: 0.75rem !important;
}

.site-footer h3 {
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #cbd5e1;
  margin-bottom: 0.65rem;
}

.site-footer a {
  display: block;
  color: #e2e8f0;
  font-size: 0.92rem;
  margin-bottom: 0.35rem;
}

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

/* Icon motion — min 15s loops */
.icon-spin { animation: iconSpin 18s linear infinite; transform-box: fill-box; transform-origin: center; }
.icon-pulse { animation: iconPulse 16s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.icon-slide { animation: iconSlide 15s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.icon-draw { animation: iconDraw 17s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }

@keyframes iconSpin { to { transform: rotate(360deg); } }
@keyframes iconPulse { 50% { transform: scale(0.92); opacity: 0.85; } }
@keyframes iconSlide { 50% { transform: translateX(2px); } }
@keyframes iconDraw { 50% { transform: translateY(-1px); } }

/* Responsive */
@media (max-width: 1180px) {
  :root { --rail-w: 240px; --hero-max-h: 44vh; }
  .bento-services,
  .scenarios-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .process-bento { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .component-benefits .proof-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 960px) {
  .aerra-page { grid-template-columns: 1fr; }
  .aerra-rail {
    position: relative;
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(248, 250, 252, 0.08);
  }
  .aerra-rail-inner {
    min-height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
  }
  .aerra-rail nav {
    flex-direction: row;
    flex-wrap: wrap;
    flex: 1 1 auto;
  }
  .aerra-rail-cta { margin-top: 0; width: 100%; }
  .header-cta { width: auto; }
  .hero-showcase { grid-template-columns: 1fr; }
  .hero-visual { max-height: 44vh; }
  .contact-panel { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .geo-bento { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  :root { --hero-max-h: 38vh; }
  .bento-services,
  .scenarios-grid,
  .process-bento,
  .component-benefits .proof-band { grid-template-columns: 1fr; }
  .hero h1 { max-width: none; }
  .hero-visual { min-height: 200px; max-height: 38vh; }
}

@media (min-width: 1800px) {
  :root { --page-max: 1560px; }
  .aerra-canvas { padding-inline: 2.5rem; }
}

@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;
  }
  .card:hover { transform: none; }
}