/* ============================================================
   DownwindTracker — Landing page styles
   Wind Tracer dark theme, oceanic editorial direction
   ============================================================ */

:root {
  /* Wind Tracer tokens (matched to in-app DesignTokens.swift) */
  --wt-bg-base:        #0A0A0B;
  --wt-surface-1:      #18181B;
  --wt-surface-2:      #27272A;
  --wt-surface-3:      #3F3F46;
  --wt-border:         #27272A;
  --wt-border-subtle:  #1E1E21;
  --wt-text-primary:   #FAFAFA;
  --wt-text-secondary: #A1A1AA;
  --wt-text-tertiary:  #71717A;
  --wt-teal:           #2B7A8C;
  --wt-teal-bright:    #2DD4BF;
  --wt-amber:          #F59E0B;
  --wt-success:        #22C55E;
  --wt-error:          #EF4444;

  /* Layout */
  --max-w: 1180px;
  --gutter: clamp(20px, 4vw, 56px);

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

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--wt-text-primary);
  background: var(--wt-bg-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* ----- Background decoration ----- */
.bg-grain {
  position: fixed; inset: 0;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
  z-index: 0;
}
.bg-glow {
  position: fixed;
  top: -200px; left: 50%;
  transform: translateX(-50%);
  width: 1200px; height: 800px;
  pointer-events: none;
  background:
    radial-gradient(ellipse 50% 40% at 30% 20%, rgba(43,122,140,0.18), transparent 60%),
    radial-gradient(ellipse 40% 30% at 70% 30%, rgba(245,158,11,0.06), transparent 60%);
  z-index: 0;
}

/* ----- Header ----- */
.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 28px var(--gutter);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--wt-text-primary);
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 28px; height: 28px;
  color: var(--wt-teal);
}
.brand-word {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 19px;
  letter-spacing: -0.015em;
}

.site-nav {
  display: flex;
  gap: 30px;
}
.site-nav a {
  color: var(--wt-text-secondary);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 160ms ease;
}
.site-nav a:hover { color: var(--wt-text-primary); }

@media (max-width: 720px) {
  .site-nav { display: none; }
}

/* ----- HERO ----- */
.hero {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(48px, 9vw, 120px) var(--gutter) 0;
  text-align: left;
}

.hero-icon {
  margin-bottom: 28px;
}

.hero-icon img {
  width: clamp(80px, 12vw, 120px);
  height: clamp(80px, 12vw, 120px);
  border-radius: 22%;
  display: block;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 14px;
  border: 1px solid var(--wt-border);
  border-radius: 999px;
  font-size: 13px;
  color: var(--wt-text-secondary);
  background: rgba(24,24,27,0.5);
  backdrop-filter: blur(8px);
  margin-bottom: 32px;
}
.hero-status .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--wt-amber);
  box-shadow: 0 0 12px var(--wt-amber);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(40px, 7.5vw, 92px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0 0 28px;
  max-width: 16ch;
}
.hero-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--wt-teal-bright);
  font-feature-settings: "ss01";
}

.hero-lede {
  max-width: 56ch;
  font-size: clamp(17px, 1.6vw, 20px);
  line-height: 1.55;
  color: var(--wt-text-secondary);
  margin: 0 0 40px;
}
.hero-lede strong {
  color: var(--wt-text-primary);
  font-weight: 500;
  font-family: var(--font-mono);
  font-size: 0.92em;
  letter-spacing: -0.02em;
}

.hero-cta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 22px;
  border-radius: 10px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15px;
  text-decoration: none;
  transition: all 200ms ease;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary {
  background: var(--wt-text-primary);
  color: var(--wt-bg-base);
}
.btn-primary:hover {
  background: var(--wt-teal-bright);
  transform: translateY(-1px);
}
.btn-primary.disabled {
  background: var(--wt-surface-2);
  color: var(--wt-text-secondary);
  cursor: not-allowed;
}
.btn-primary.disabled:hover {
  transform: none;
  background: var(--wt-surface-2);
}
.btn-ghost {
  background: transparent;
  color: var(--wt-text-primary);
  border-color: var(--wt-border);
}
.btn-ghost:hover {
  border-color: var(--wt-teal);
  color: var(--wt-teal-bright);
}
.btn-sub {
  font-size: 12px;
  color: var(--wt-text-tertiary);
  font-family: var(--font-mono);
  padding-left: 10px;
  border-left: 1px solid var(--wt-border);
}

.hero-meta {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--wt-text-tertiary);
  letter-spacing: 0.02em;
}

.hero-wave {
  display: block;
  width: 100%;
  height: clamp(120px, 18vw, 240px);
  margin-top: clamp(40px, 7vw, 80px);
}

/* ----- Sections ----- */
.section {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(60px, 9vw, 110px) var(--gutter);
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--wt-teal-bright);
  margin-bottom: 18px;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(28px, 4.5vw, 48px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  max-width: 24ch;
}

.section-lede {
  max-width: 64ch;
  color: var(--wt-text-secondary);
  font-size: 17px;
  line-height: 1.6;
  margin: 0 0 48px;
}

/* ----- How it works ----- */
.how-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) {
  .how-grid { grid-template-columns: 1fr; }
}

.how-step {
  background: linear-gradient(180deg, var(--wt-surface-1), rgba(24,24,27,0.4));
  border: 1px solid var(--wt-border);
  border-radius: 14px;
  padding: 32px 28px;
  position: relative;
  overflow: hidden;
}
.how-step::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 60px; height: 2px;
  background: var(--wt-teal);
}

.how-step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--wt-teal-bright);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.how-step h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 22px;
  line-height: 1.25;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
  color: var(--wt-text-primary);
}

.how-step p {
  color: var(--wt-text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin: 0 0 20px;
}

.how-step code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--wt-amber);
  background: rgba(245,158,11,0.08);
  padding: 1px 6px;
  border-radius: 4px;
}

.how-step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--wt-border-subtle);
  padding-top: 16px;
}
.how-step-list li {
  font-size: 13.5px;
  color: var(--wt-text-tertiary);
  padding: 5px 0 5px 18px;
  position: relative;
  font-family: var(--font-mono);
  line-height: 1.45;
}
.how-step-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--wt-teal);
}

/* ----- Capture (data transparency section) ----- */
.capture-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.6fr 1fr;
  gap: 20px;
}
@media (max-width: 1000px) {
  .capture-grid { grid-template-columns: 1fr; }
}

.capture-card {
  background: var(--wt-surface-1);
  border: 1px solid var(--wt-border);
  border-radius: 14px;
  padding: 26px;
}
.capture-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.capture-card h3 {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  margin: 0;
  color: var(--wt-text-primary);
  letter-spacing: -0.01em;
  word-break: break-all;
}
.capture-tag {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  background: rgba(43,122,140,0.18);
  color: var(--wt-teal-bright);
  border: 1px solid rgba(43,122,140,0.3);
}
.capture-card-meta .capture-tag {
  background: rgba(245,158,11,0.12);
  color: var(--wt-amber);
  border-color: rgba(245,158,11,0.3);
}

.capture-code {
  background: var(--wt-bg-base);
  border: 1px solid var(--wt-border-subtle);
  border-radius: 8px;
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--wt-text-primary);
  overflow-x: auto;
  margin: 0 0 14px;
  white-space: pre-wrap;
  line-height: 1.55;
}
.capture-card p {
  font-size: 14.5px;
  color: var(--wt-text-secondary);
  margin: 0;
  line-height: 1.55;
}

.capture-meta-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.capture-meta-list li {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--wt-text-secondary);
  padding: 6px 0;
  border-bottom: 1px solid var(--wt-border-subtle);
}
.capture-meta-list li:last-child { border-bottom: none; }

.capture-note {
  margin-top: 36px;
  padding: 18px 22px;
  border-left: 2px solid var(--wt-teal);
  background: rgba(43,122,140,0.06);
  color: var(--wt-text-secondary);
  font-size: 15px;
  border-radius: 0 8px 8px 0;
}

/* ----- FAQ ----- */
.faq details {
  border-bottom: 1px solid var(--wt-border);
  padding: 22px 0;
}
.faq details:first-of-type {
  border-top: 1px solid var(--wt-border);
}
.faq summary {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.015em;
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 32px;
  color: var(--wt-text-primary);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 300;
  color: var(--wt-teal-bright);
  transition: transform 200ms ease;
}
.faq details[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}
.faq details p {
  margin: 16px 0 0;
  color: var(--wt-text-secondary);
  font-size: 16px;
  line-height: 1.6;
  max-width: 70ch;
}
.faq a { color: var(--wt-teal-bright); }

/* ----- Support ----- */
.support {
  padding-bottom: clamp(80px, 11vw, 140px);
}
.support-card {
  background:
    radial-gradient(ellipse at top right, rgba(43,122,140,0.12), transparent 60%),
    var(--wt-surface-1);
  border: 1px solid var(--wt-border);
  border-radius: 18px;
  padding: clamp(36px, 5vw, 60px);
  text-align: left;
}
.support-card p {
  color: var(--wt-text-secondary);
  max-width: 60ch;
  margin: 0 0 28px;
}
.support-card .btn { margin-bottom: 22px; }
.support-meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--wt-text-tertiary);
  margin: 0;
}

/* ----- Footer ----- */
.site-footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--wt-border);
  margin-top: 40px;
  padding: 40px var(--gutter) 60px;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--wt-text-secondary);
  font-family: var(--font-display);
  font-size: 16px;
}
.footer-brand .brand-mark { color: var(--wt-teal); width: 22px; height: 22px; }
.footer-nav {
  display: flex;
  gap: 24px;
}
.footer-nav a {
  color: var(--wt-text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 160ms ease;
}
.footer-nav a:hover { color: var(--wt-text-primary); }
.footer-fineprint {
  margin-top: 24px;
  font-size: 12.5px;
  color: var(--wt-text-tertiary);
  font-family: var(--font-mono);
  line-height: 1.5;
}

/* ----- Legal pages typography ----- */
.legal-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 48px var(--gutter) 96px;
  position: relative;
  z-index: 1;
}
.legal-page h1 {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(34px, 5vw, 52px);
  letter-spacing: -0.02em;
  margin: 0 0 12px;
  line-height: 1.05;
}
.legal-page .updated {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--wt-text-tertiary);
  margin-bottom: 40px;
}
.legal-page h2 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 24px;
  letter-spacing: -0.015em;
  margin: 44px 0 16px;
  color: var(--wt-text-primary);
}
.legal-page h3 {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 17px;
  margin: 26px 0 10px;
  color: var(--wt-text-primary);
}
.legal-page p, .legal-page li {
  color: var(--wt-text-secondary);
  font-size: 16px;
  line-height: 1.7;
}
.legal-page ul, .legal-page ol {
  padding-left: 22px;
  margin: 12px 0;
}
.legal-page li { margin: 6px 0; }
.legal-page a { color: var(--wt-teal-bright); }
.legal-page strong { color: var(--wt-text-primary); }
.legal-page .back-link {
  display: inline-block;
  margin-bottom: 32px;
  color: var(--wt-text-secondary);
  text-decoration: none;
  font-size: 14px;
}
.legal-page .back-link:hover { color: var(--wt-text-primary); }
.legal-page table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 14.5px;
}
.legal-page th, .legal-page td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--wt-border);
  color: var(--wt-text-secondary);
}
.legal-page th {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--wt-text-tertiary);
  font-weight: 500;
}