/* TripScan variant 1 — cavern field atlas / negantropy-inspired layout system */
:root {
  --page: #08090d;
  --surface: #12141a;
  --surface-raised: #1a1d26;
  --text: #e8dcc8;
  --muted: #9a9080;
  --accent: #c8872a;
  --accent-alt: #6b4f9a;
  --accent-glow: #d4a04a;
  --line: color-mix(in srgb, var(--text) 14%, transparent);
  --radius: 6px;
  --radius-lg: 14px;
  --rail-width: clamp(240px, 18vw, 300px);
  --shell-max: min(1920px, 100%);
  --section-space: clamp(4rem, 8vw, 7rem);
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", "SF Mono", Consolas, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 0.32s;
}

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

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  line-height: 1.65;
  font-family: var(--font-body);
  background: var(--page);
  color: var(--text);
  background-image:
    radial-gradient(ellipse 80% 50% at 100% 0%, color-mix(in srgb, var(--accent-alt) 12%, transparent), transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 100%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 50%);
}

body.donor-layout-tripc86-top {
  --page: #08090d;
  --surface: #12141a;
  --text: #e8dcc8;
  --muted: #9a9080;
  --accent: #c8872a;
  --accent-alt: #6b4f9a;
}

body,
button,
input,
select,
textarea {
  font: inherit;
}

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

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

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  line-height: 1.08;
  color: var(--text);
}

h1 {
  font-size: clamp(2.25rem, 4.8vw, 4.25rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.75rem, 3.2vw, 3rem);
  margin-bottom: 1rem;
}

h3 {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  margin-bottom: 0.65rem;
}

p {
  color: var(--muted);
}

/* --- page shell: persistent side rail + canvas --- */
.page-shell {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  width: min(var(--shell-max), 100%);
  min-height: 100vh;
  margin: 0 auto;
}

.site-rail {
  position: sticky;
  top: 0;
  align-self: start;
  z-index: 40;
  height: 100vh;
  min-height: 0;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--page) 92%, var(--surface));
  backdrop-filter: blur(12px);
}

.rail-inner {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  height: 100%;
  min-height: 0;
  padding: 1.5rem 1.25rem 2rem;
  overflow: hidden;
}

.brand {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1rem;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: clamp(44px, 5vw, 64px);
  height: clamp(44px, 5vw, 64px);
  max-width: 64px;
  max-height: 64px;
  border-radius: calc(var(--radius) + 2px);
  object-fit: contain;
  overflow: hidden;
  flex: 0 0 auto;
}

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

.brand small {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.site-rail nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 0;
  flex: 1 1 auto;
  overflow: auto;
}

.site-rail nav a {
  display: block;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.55rem 0.7rem;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color var(--duration) var(--ease), border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}

.site-rail nav a:hover {
  color: var(--text);
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: auto;
  padding: 0.85rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.82rem;
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 70%, var(--accent-glow)));
  color: #1a1208;
  white-space: nowrap;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 28%, transparent);
}

.page-canvas {
  min-width: 0;
}

.main-flow {
  min-width: 0;
}

.section-inner {
  width: min(1180px, calc(100% - clamp(1.5rem, 4vw, 3.5rem)));
  margin: 0 auto;
}

.section {
  padding: var(--section-space) 0;
}

.section:nth-child(even) {
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  border-block: 1px solid var(--line);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 2.25rem;
}

.section-heading > p {
  font-size: 1.05rem;
}

.section-kicker,
.eyebrow {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

.lead {
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
  max-width: 52ch;
}

/* --- hero: visual band + editorial block --- */
.hero {
  padding: clamp(2rem, 4vw, 3.5rem) 0 var(--section-space);
}

.hero-band {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
}

.hero-visual {
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: min(62vh, 640px);
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: var(--surface-raised);
  box-shadow:
    0 24px 64px color-mix(in srgb, var(--accent-alt) 14%, transparent),
    inset 0 1px 0 color-mix(in srgb, var(--text) 8%, transparent);
}

.hero-visual svg {
  width: 100%;
  height: 100%;
}

.hero-editorial {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: end;
}

.hero-copy {
  min-width: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.75rem 0 1rem;
}

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

.button,
.header-cta {
  cursor: pointer;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.82rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.88rem;
  transition: background var(--duration) var(--ease), border-color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

.button-primary {
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent) 75%, var(--accent-glow)));
  border-color: var(--accent);
  color: #1a1208;
}

.button-primary:hover {
  transform: translateY(-1px);
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: color-mix(in srgb, var(--text) 22%, transparent);
}

.button-secondary:hover {
  border-color: var(--accent-alt);
  background: color-mix(in srgb, var(--accent-alt) 10%, transparent);
}

/* --- process: vertical depth steps --- */
.layout-depth-steps .process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.85rem;
  counter-reset: depth;
}

.layout-depth-steps .process-list li {
  counter-increment: depth;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  min-width: 0;
  padding: 1.35rem 1.2rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  position: relative;
}

.layout-depth-steps .process-list li::before {
  content: counter(depth, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  color: var(--accent-alt);
}

/* --- services / cards: bento quad --- */
.layout-bento-quad .cards-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.layout-bento-quad .cards-grid .card:nth-child(1) {
  grid-column: span 6;
}

.layout-bento-quad .cards-grid .card:nth-child(2) {
  grid-column: span 6;
}

.layout-bento-quad .cards-grid .card:nth-child(3) {
  grid-column: span 5;
}

.layout-bento-quad .cards-grid .card:nth-child(4) {
  grid-column: span 7;
}

.card {
  min-width: 0;
  padding: 1.45rem;
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.card:hover {
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.card p {
  margin-bottom: 0;
}

.card-icon,
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 1rem;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: calc(var(--radius) + 4px);
}

.card-icon svg,
.step-icon svg {
  width: 28px;
  height: 28px;
}

.card-label {
  display: block;
  color: var(--accent-alt);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.65rem;
}

.card-value {
  display: block;
  margin-top: 1rem;
  color: var(--accent-glow);
  font-size: 1.1rem;
  font-weight: 700;
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.4rem;
  font-size: 0.82rem;
}

/* default card grids for benefits/scenarios */
.component-benefits .cards-grid,
.component-scenarios .cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

/* --- geography --- */
.geo-chips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.geo-chip {
  padding: 1.35rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  border-bottom: 3px solid var(--accent-alt);
}

.geo-chip strong,
.geo-chip span {
  display: block;
}

.geo-chip strong {
  color: var(--text);
  margin-bottom: 0.5rem;
}

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

/* --- guide: two-column journal --- */
.layout-journal-columns .guide-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem 2rem;
  min-width: 0;
}

.chapter {
  min-width: 0;
  padding: 1.35rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.chapter li {
  color: var(--muted);
  margin: 0.45rem 0;
}

/* --- faq --- */
.faq-list {
  max-width: 920px;
  display: grid;
  gap: 0;
}

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

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
  list-style: none;
}

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

.faq-list p {
  padding-right: 1.5rem;
  margin-top: 0.75rem;
}

/* --- contact --- */
.layout-criteria-panel .contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

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

.contact-form label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
}

input,
select,
textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid color-mix(in srgb, var(--text) 18%, transparent);
  background: var(--page);
  color: var(--text);
  padding: 0.85rem;
  border-radius: var(--radius);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.form-message {
  color: var(--accent-glow);
  margin: 0;
}

.tripscan-disclaimer {
  font-size: 0.82rem;
  border-left: 3px solid var(--accent-alt);
  padding-left: 0.85rem;
}

/* --- footer --- */
.site-footer {
  padding: 3.5rem 0 4rem;
  background: color-mix(in srgb, var(--surface) 80%, var(--page));
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.8fr 1fr;
  gap: 2rem;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--text);
}

.site-footer a {
  display: block;
  color: var(--muted);
  margin: 0.35rem 0;
}

.footer-coverage {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

/* --- icon motion --- */
.icon-draw path {
  stroke-dasharray: 34 8;
  animation: iconDraw 12s linear infinite;
}

.icon-pulse {
  transform-box: fill-box;
  transform-origin: center;
  animation: iconPulse 12s ease-in-out infinite;
}

.icon-slide {
  animation: iconSlide 12s ease-in-out infinite;
}

.icon-spin {
  transform-box: fill-box;
  transform-origin: center;
  animation: iconSpin 14s linear infinite;
}

@keyframes iconDraw {
  to {
    stroke-dashoffset: -84;
  }
}

@keyframes iconPulse {
  50% {
    transform: scale(0.9);
    opacity: 0.75;
  }
}

@keyframes iconSlide {
  50% {
    transform: translateX(3px);
  }
}

@keyframes iconSpin {
  to {
    transform: rotate(360deg);
  }
}

/* --- responsive --- */
@media (max-width: 1200px) {
  .layout-bento-quad .cards-grid .card:nth-child(n) {
    grid-column: span 6;
  }

  .component-benefits .cards-grid,
  .component-scenarios .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .layout-depth-steps .process-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 960px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .site-rail {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .rail-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-rows: auto auto;
    align-items: center;
    gap: 0.75rem 1rem;
    padding: 0.85rem 1rem;
    height: auto;
  }

  .brand {
    grid-column: 1;
    grid-row: 1;
  }

  .header-cta {
    grid-column: 3;
    grid-row: 1;
    margin-top: 0;
    padding: 0.65rem 0.9rem;
    font-size: 0.75rem;
  }

  .site-rail nav {
    grid-column: 1 / -1;
    grid-row: 2;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.35rem;
    overflow: visible;
  }

  .site-rail nav a {
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: var(--radius);
    padding: 0.45rem 0.65rem;
  }

  .hero-editorial {
    grid-template-columns: 1fr;
  }

  .layout-journal-columns .guide-body {
    grid-template-columns: 1fr;
  }

  .layout-criteria-panel .contact-grid {
    grid-template-columns: 1fr;
  }

  .layout-depth-steps .process-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .geo-chips {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .section-inner {
    width: min(100% - 1.75rem, 1180px);
  }

  .layout-bento-quad .cards-grid .card:nth-child(n),
  .component-benefits .cards-grid,
  .component-scenarios .cards-grid,
  .layout-depth-steps .process-list {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    aspect-ratio: 4 / 3;
    max-height: none;
  }

  h1 {
    font-size: clamp(2rem, 11vw, 2.75rem);
  }
}

@media (min-width: 1440px) {
  .section-inner {
    width: min(1280px, calc(100% - 4rem));
  }

  .hero-band {
    gap: 3.5rem;
  }
}

@media (min-width: 2160px) {
  :root {
    --shell-max: 1920px;
  }

  .page-shell {
    box-shadow: 0 0 0 1px var(--line);
  }

  .section-inner {
    width: min(1360px, calc(100% - 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,
  .button-primary:hover,
  .header-cta:hover {
    transform: none;
  }
}