/* OfflineTopoMap — one-pager
   Direction: modern outdoor tech. Near-black green surfaces, mint contour texture,
   lime accent, geometric sans throughout. */

:root {
  --color-night: #0b1512;
  --color-night-2: #11251e;
  --color-pine: #16382d;
  --color-green: #1f7a5c;
  --color-green-deep: #165c46;
  --color-mint: #8fe3c0;
  --color-lime: #c6f542;
  --color-lime-deep: #9fd11f;
  --color-surface: #f4f8f5;
  --color-surface-2: #e7efe9;
  --color-ink: #0f1a16;
  --color-ink-soft: #3f524a;
  --color-ink-muted: #6f8078;
  --color-line: rgba(15, 26, 22, 0.1);
  --color-contour: rgba(143, 227, 192, 0.3);
  --color-on-dark: #eef6f1;
  --color-on-dark-soft: rgba(238, 246, 241, 0.72);
  --color-on-dark-muted: rgba(238, 246, 241, 0.55);

  --font-display: "Bricolage Grotesque", "Manrope", -apple-system, "SF Pro Display", sans-serif;
  --font-body: "Manrope", -apple-system, "SF Pro Text", "Segoe UI", sans-serif;

  --text-xs: 0.78rem;
  --text-sm: 0.9rem;
  --text-base: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
  --text-lg: clamp(1.15rem, 1rem + 0.6vw, 1.4rem);
  --text-h2: clamp(2rem, 1.3rem + 2.6vw, 3.6rem);
  --text-hero: clamp(2.7rem, 1.3rem + 5.6vw, 6rem);

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-section: clamp(4.5rem, 3rem + 6vw, 9rem);
  --gutter: clamp(1rem, 4vw, 3rem);
  --measure: 62ch;
  --radius-card: 18px;
  --radius-pill: 999px;

  --shadow-card: 0 1px 2px rgba(15, 26, 22, 0.05), 0 14px 32px -20px rgba(15, 26, 22, 0.35);
  --shadow-phone: 0 40px 80px -30px rgba(11, 21, 18, 0.7), 0 20px 30px -20px rgba(11, 21, 18, 0.6);

  --duration-fast: 160ms;
  --duration-normal: 420ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 5rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--color-surface);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: var(--color-green-deep); text-underline-offset: 0.15em; }
a:hover { color: var(--color-ink); }
:focus-visible { outline: 3px solid var(--color-lime-deep); outline-offset: 3px; border-radius: 4px; }

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.03em; line-height: 1.02; margin: 0; }
h2 { font-size: var(--text-h2); }
h3 { font-size: 1.35rem; line-height: 1.2; letter-spacing: -0.02em; }
p { margin: 0; }
.measure { max-width: var(--measure); }

.container { width: min(1180px, 100% - 2 * var(--gutter)); margin-inline: auto; }
.section { padding-block: var(--space-section); }
.section-head { display: grid; gap: var(--space-2); margin-bottom: var(--space-4); }
.eyebrow {
  font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-green);
}
.eyebrow-on-dark { color: var(--color-lime); }
.lead { font-size: var(--text-lg); color: var(--color-ink-soft); line-height: 1.5; }

/* Contour texture: the SVG is white strokes on transparent; used as a mask so any colour works. */
.contours {
  position: absolute; inset: 0; pointer-events: none;
  -webkit-mask-image: url("assets/contours.svg"); mask-image: url("assets/contours.svg");
  -webkit-mask-size: cover; mask-size: cover;
  -webkit-mask-position: center; mask-position: center;
  background: var(--color-contour);
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-night) 84%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  color: var(--color-on-dark);
  border-bottom: 1px solid rgba(238, 246, 241, 0.08);
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--space-2); min-height: 4rem; }
.brand { display: inline-flex; align-items: center; gap: 0.7rem; color: inherit; text-decoration: none; font-weight: 700; letter-spacing: -0.02em; font-family: var(--font-display); }
.brand img { width: 34px; height: 34px; border-radius: 8px; box-shadow: 0 2px 8px rgba(0,0,0,0.3); }
.site-nav { display: flex; gap: clamp(0.8rem, 2vw, 1.6rem); align-items: center; }
.site-nav a {
  color: var(--color-on-dark-soft); text-decoration: none; font-size: var(--text-sm); font-weight: 600;
  padding: 0.35rem 0; border-bottom: 2px solid transparent;
  transition: color var(--duration-fast), border-color var(--duration-fast);
}
.site-nav a:hover, .site-nav a[aria-current="true"] { color: var(--color-on-dark); border-color: var(--color-lime); }
.nav-toggle {
  display: none; background: none; border: 1px solid rgba(238,246,241,0.3); color: var(--color-on-dark);
  border-radius: var(--radius-pill); padding: 0.45rem 0.9rem; font: inherit; font-size: var(--text-sm); font-weight: 600;
}

/* Buttons */
.button {
  display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.9rem 1.4rem;
  border-radius: var(--radius-pill); font-weight: 700; text-decoration: none; font-size: var(--text-sm);
  border: 1px solid transparent; cursor: pointer; font-family: inherit;
  transition: transform var(--duration-fast) var(--ease-out), background var(--duration-fast), border-color var(--duration-fast);
}
.button:hover { transform: translateY(-1px); }
.button:active { transform: translateY(0); }
.button-primary { background: var(--color-lime); color: var(--color-night); }
.button-primary:hover { background: #d6ff5e; color: var(--color-night); }
.button-ghost { background: transparent; color: var(--color-on-dark); border-color: rgba(143,227,192,0.45); }
.button-ghost:hover { border-color: var(--color-mint); color: var(--color-on-dark); }
.button svg { width: 1.1em; height: 1.1em; }

/* Hero */
.hero {
  position: relative; overflow: hidden; color: var(--color-on-dark);
  background: linear-gradient(135deg, var(--color-pine) 0%, #0f2a22 50%, var(--color-night) 100%);
}
.hero .contours { opacity: 0.9; -webkit-mask-size: 130%; mask-size: 130%; -webkit-mask-position: 30% 20%; mask-position: 30% 20%; }
.hero-glow {
  position: absolute; width: 60vmax; height: 60vmax; right: -20vmax; top: -10vmax; pointer-events: none;
  background: radial-gradient(closest-side, rgba(198,245,66,0.16), transparent 70%);
}
.hero .container {
  position: relative; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  align-items: center; gap: clamp(2rem, 5vw, 5rem); padding-block: clamp(4rem, 8vw, 7rem) clamp(3rem, 6vw, 6rem);
}
.hero h1 { font-size: var(--text-hero); font-weight: 700; letter-spacing: -0.04em; }
.hero h1 em { font-style: normal; color: var(--color-lime); }
.hero .lead { color: var(--color-on-dark-soft); margin-top: var(--space-3); max-width: 50ch; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-top: var(--space-4); }
.hero-facts { display: flex; flex-wrap: wrap; gap: var(--space-3) var(--space-4); margin-top: var(--space-4); padding-top: var(--space-3); border-top: 1px solid rgba(238,246,241,0.14); }
.hero-facts div { display: grid; gap: 0.15rem; }
.hero-facts strong { font-family: var(--font-display); font-size: 1.6rem; font-weight: 700; letter-spacing: -0.03em; color: var(--color-mint); }
.hero-facts span { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-on-dark-muted); }
.hero-note { font-size: var(--text-xs); margin-top: 0.8rem; color: var(--color-on-dark-muted); }

/* Phone frame */
.phone {
  position: relative; aspect-ratio: 1179 / 2556; width: 100%; max-width: 340px; margin-inline: auto;
  border-radius: 13.5% / 6.2%; background: #0a110e; padding: 3.2%;
  box-shadow: var(--shadow-phone), inset 0 0 0 1px rgba(255,255,255,0.08);
}
.phone::before {
  content: ""; position: absolute; top: 5.2%; left: 50%; width: 28%; height: 2.9%; transform: translateX(-50%);
  background: #000; border-radius: 999px; z-index: 2;
}
.phone img { width: 100%; height: 100%; object-fit: cover; border-radius: 11.5% / 5.3%; }
.hero .phone { transform: rotate(-3deg); }
.hero .phone-shadow { position: absolute; inset: auto 10% -6% 10%; height: 12%; background: radial-gradient(closest-side, rgba(0,0,0,0.5), transparent); filter: blur(10px); }

/* Highlights — bento */
.bento { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: var(--space-2); }
.card {
  position: relative; overflow: hidden; background: #fff; border: 1px solid var(--color-line);
  border-radius: var(--radius-card); padding: clamp(1.25rem, 2vw, 1.9rem); box-shadow: var(--shadow-card);
  display: grid; gap: 0.75rem; align-content: start;
  transition: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out);
}
.card:hover { transform: translateY(-3px); box-shadow: 0 2px 4px rgba(15,26,22,0.05), 0 24px 40px -24px rgba(15,26,22,0.4); }
.card p { color: var(--color-ink-soft); font-size: var(--text-sm); line-height: 1.55; }
.card .icon {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--color-surface-2); color: var(--color-green);
}
.card .icon svg { width: 22px; height: 22px; }
.card-dark { background: var(--color-night-2); color: var(--color-on-dark); border-color: transparent; }
.card-dark p { color: var(--color-on-dark-soft); }
.card-dark .icon { background: rgba(143,227,192,0.12); color: var(--color-mint); }
.card-dark .contours { opacity: 0.7; -webkit-mask-size: 180%; mask-size: 180%; }
.card-dark > * { position: relative; }
.card-accent { background: var(--color-lime); color: var(--color-night); border-color: transparent; }
.card-accent p { color: rgba(11,21,18,0.78); }
.card-accent .icon { background: rgba(11,21,18,0.1); color: var(--color-night); }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-4 { grid-column: span 4; }
.card-figure { margin: 0.5rem -0.5rem -1.2rem; }
.card-figure .stat {
  display: flex; gap: var(--space-3); padding: 1rem 1.2rem; border-radius: 14px; background: var(--color-surface);
  font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; letter-spacing: -0.02em;
}
.card-figure .stat small { display: block; font-family: var(--font-body); font-weight: 600; font-size: var(--text-xs); color: var(--color-ink-muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* How it works */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(1.5rem, 3vw, 3rem); }
.step { display: grid; gap: var(--space-2); }
.step .phone { max-width: 280px; }
.step-body { display: grid; gap: 0.4rem; }
.step-number {
  font-family: var(--font-display); font-size: 3rem; line-height: 1; color: var(--color-green); font-weight: 700; letter-spacing: -0.04em;
}
.step p { color: var(--color-ink-soft); font-size: var(--text-sm); }

/* Estimator */
.estimator {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--space-4); align-items: center;
  background: var(--color-night-2); color: var(--color-on-dark); border-radius: 24px; padding: clamp(1.5rem, 3vw, 3rem);
  position: relative; overflow: hidden;
}
.estimator .contours { opacity: 0.5; -webkit-mask-size: 160%; mask-size: 160%; -webkit-mask-position: 80% 60%; mask-position: 80% 60%; }
.estimator > * { position: relative; }
.estimator .lead { color: var(--color-on-dark-soft); }
.estimator label { display: flex; justify-content: space-between; font-weight: 700; font-size: var(--text-sm); margin-top: var(--space-3); }
.estimator input[type="range"] { width: 100%; margin-top: 0.8rem; accent-color: var(--color-lime); }
.readout { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-2); }
.readout div { background: rgba(238,246,241,0.05); border: 1px solid rgba(143,227,192,0.16); border-radius: 14px; padding: 1rem; display: grid; gap: 0.2rem; }
.readout strong { font-family: var(--font-display); white-space: nowrap; font-size: clamp(1.3rem, 0.9rem + 1.1vw, 1.9rem); font-weight: 700; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; color: var(--color-mint); }
.readout span { font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.1em; color: var(--color-on-dark-muted); }
.verdict { margin-top: var(--space-2); font-size: var(--text-sm); display: flex; gap: 0.6rem; align-items: flex-start; color: var(--color-on-dark-soft); }
.verdict[data-state="over"] { color: var(--color-lime); }
.verdict svg { flex: none; width: 1.2em; height: 1.2em; margin-top: 0.15em; }

/* Open data */
.data-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: var(--space-4); align-items: start; }
.attribution-line {
  font-family: ui-monospace, "SF Mono", Menlo, monospace; font-size: var(--text-sm); background: var(--color-surface);
  border: 1px solid var(--color-line); border-radius: 12px; padding: 1rem 1.2rem; margin-top: var(--space-2);
  overflow-wrap: anywhere;
}
.checklist { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.9rem; }
.checklist li { display: grid; grid-template-columns: 1.6rem 1fr; gap: 0.8rem; align-items: start; font-size: var(--text-sm); color: var(--color-ink-soft); }
.checklist li strong { color: var(--color-ink); display: block; }
.checklist svg { width: 1.6rem; height: 1.6rem; color: var(--color-green); }

/* Legal */
.legal { background: var(--color-surface-2); }
.legal .container { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: var(--space-4); align-items: start; }
.legal-toc { position: sticky; top: 5.5rem; display: grid; gap: 0.4rem; font-size: var(--text-sm); }
.legal-toc a { text-decoration: none; color: var(--color-ink-soft); padding: 0.25rem 0; border-left: 2px solid transparent; padding-left: 0.8rem; font-weight: 600; }
.legal-toc a:hover, .legal-toc a[aria-current="true"] { color: var(--color-ink); border-color: var(--color-lime-deep); }
.legal-body { display: grid; gap: var(--space-4); }
.legal-body article { background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-card); padding: clamp(1.4rem, 3vw, 2.4rem); display: grid; gap: var(--space-2); }
.legal-body h3 { font-size: 1.7rem; }
.legal-body h4 { font-family: var(--font-body); font-size: 1rem; margin: 0.6rem 0 0; }
.legal-body p, .legal-body li { font-size: var(--text-sm); color: var(--color-ink-soft); }
.legal-body ul { margin: 0; padding-left: 1.2rem; display: grid; gap: 0.4rem; }
.legal-body .meta { font-size: var(--text-xs); color: var(--color-ink-muted); text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; }
.placeholder {
  background: #f2fbd7; border: 1px dashed var(--color-lime-deep); border-radius: 6px; padding: 0.05em 0.4em;
  color: #3d5a05; font-family: ui-monospace, Menlo, monospace; font-size: 0.85em;
}
.notice { border-left: 3px solid var(--color-lime-deep); padding: 0.6rem 1rem; background: #f6fce6; border-radius: 0 12px 12px 0; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.2rem; margin: 0; font-size: var(--text-sm); }
dl.facts dt { color: var(--color-ink-muted); }
dl.facts dd { margin: 0; color: var(--color-ink-soft); }

/* Footer */
.site-footer { background: var(--color-night); color: var(--color-on-dark-soft); padding-block: var(--space-4); font-size: var(--text-sm); }
.site-footer .container { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-2); align-items: center; }
.site-footer a { color: var(--color-mint); }

/* Reveal */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .button { transition: none; }
}

/* Responsive */
@media (max-width: 1024px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .span-2, .span-3, .span-4 { grid-column: span 1; }
  .steps { grid-template-columns: 1fr; }
  .step { grid-template-columns: minmax(0, 200px) 1fr; align-items: center; }
  .estimator, .data-grid { grid-template-columns: 1fr; }
  .legal .container { grid-template-columns: 1fr; }
  .legal-toc { position: static; display: flex; flex-wrap: wrap; gap: 0.2rem 1rem; }
  .legal-toc a { border-left: none; padding-left: 0; }
}
@media (max-width: 760px) {
  .hero .container { grid-template-columns: 1fr; padding-top: 3rem; }
  .hero .phone { transform: none; max-width: 260px; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; align-items: stretch;
    background: var(--color-night); padding: var(--space-2) var(--gutter) var(--space-3); gap: 0.2rem;
    border-bottom: 1px solid rgba(238,246,241,0.1);
  }
  .site-nav a { padding: 0.7rem 0; border-bottom: 1px solid rgba(238,246,241,0.08); }
  .site-nav.is-open { display: flex; }
  .nav-toggle { display: inline-flex; }
  .bento { grid-template-columns: 1fr; }
  .step { grid-template-columns: 1fr; }
  .readout { grid-template-columns: 1fr; }
  .hero-facts strong { font-size: 1.3rem; }
}