/* Cairn marketing site — mountain-trail palette, App Store-y composition */

:root {
  --ink:        #0f3a2e;        /* deep evergreen, matches page1 headline */
  --ink-soft:   #2c4a3f;
  --muted:      #5b6b66;
  --line:       rgba(15, 58, 46, 0.10);

  --sky-1:      #cfe2f0;
  --sky-2:      #e6ecef;
  --sand-1:     #f3e3c8;
  --sand-2:     #f8efdc;
  --paper:      #fbf8f1;

  --green:      #2f7a52;
  --green-2:    #3fa472;
  --accent:     #1f6fd0;        /* matches the in-app blue */

  --radius-lg:  28px;
  --radius-md:  18px;
  --radius-sm:  12px;

  --shadow-lg:  0 30px 80px rgba(15, 58, 46, 0.18), 0 8px 24px rgba(15, 58, 46, 0.08);
  --shadow-md:  0 12px 30px rgba(15, 58, 46, 0.10), 0 2px 6px rgba(15, 58, 46, 0.05);

  --serif: 'Fraunces', ui-serif, Georgia, 'Times New Roman', serif;
  --sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Helvetica, Arial, system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
}

img { max-width: 100%; display: block; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--green); }

/* ---------- NAV ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 28px;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: rgba(251, 248, 241, 0.72);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 800;
  font-size: 22px;
  letter-spacing: -0.01em;
}
.brand img { border-radius: 8px; }
.nav-links { display: flex; gap: 24px; align-items: center; font-weight: 500; font-size: 15px; }
.nav-links a.ghost {
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 999px;
  background: white;
  transition: background .2s, border-color .2s;
}
.nav-links a.ghost:hover { background: var(--sand-2); border-color: rgba(15, 58, 46, 0.2); }

@media (max-width: 720px) {
  .nav-links a:not(.ghost) { display: none; }
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 28px 80px;
  background:
    linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 35%, var(--sand-2) 70%, var(--sand-1) 100%);
}

.hero-bg { position: absolute; inset: 0; pointer-events: none; }
.ridge {
  position: absolute;
  left: -10%;
  right: -10%;
  bottom: 0;
  height: 60%;
  background-repeat: no-repeat;
  background-position: bottom center;
  background-size: 100% auto;
  opacity: .85;
}
.ridge-far {
  bottom: 28%;
  height: 32%;
  background-image:
    linear-gradient(180deg, transparent 0, transparent 60%, #b8c8c2 60%, #aebfb9 100%);
  clip-path: polygon(0 80%, 8% 65%, 16% 72%, 24% 50%, 34% 60%, 42% 45%, 52% 58%, 60% 50%, 70% 62%, 80% 48%, 90% 60%, 100% 55%, 100% 100%, 0 100%);
  opacity: .55;
}
.ridge-mid {
  bottom: 14%;
  height: 32%;
  background: linear-gradient(180deg, #a7bdb1, #88a796);
  clip-path: polygon(0 70%, 10% 55%, 22% 60%, 30% 38%, 42% 50%, 54% 30%, 62% 48%, 72% 35%, 82% 52%, 92% 40%, 100% 50%, 100% 100%, 0 100%);
  opacity: .8;
}
.ridge-near {
  bottom: 0;
  height: 28%;
  background: linear-gradient(180deg, #6e8d6e, #506e51);
  clip-path: polygon(0 60%, 12% 38%, 22% 50%, 32% 30%, 44% 45%, 54% 22%, 66% 42%, 76% 28%, 86% 45%, 96% 30%, 100% 40%, 100% 100%, 0 100%);
}
.path {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 70%;
  height: 22%;
  transform: translateX(-50%);
  background: radial-gradient(ellipse at top, rgba(244,225,189,0.85), rgba(244,225,189,0) 70%);
}

.hero-inner {
  position: relative;
  max-width: 1180px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; gap: 28px; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.7);
  border: 1px solid var(--line);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 22px;
  backdrop-filter: blur(6px);
}
.eyebrow img { border-radius: 6px; }

.hero h1 {
  font-family: var(--serif);
  font-weight: 900;
  font-size: clamp(40px, 6.4vw, 76px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  color: var(--ink);
}
.lede {
  font-size: clamp(17px, 1.6vw, 19px);
  color: var(--ink-soft);
  max-width: 540px;
  margin: 0 0 30px;
}

.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 22px; }

.btn {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 16px;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  border: 1px solid transparent;
  text-decoration: none;
}
.btn small { font-weight: 500; font-size: 12px; opacity: .7; margin-top: 1px; }
.btn.primary {
  background: var(--ink);
  color: var(--paper);
  box-shadow: var(--shadow-md);
}
.btn.primary:hover { background: #0a2c22; transform: translateY(-1px); color: var(--paper); }
.btn.ghost {
  background: rgba(255,255,255,0.8);
  color: var(--ink);
  border-color: var(--line);
  align-items: center;
  flex-direction: row;
  gap: 6px;
}
.btn.ghost:hover { background: white; border-color: rgba(15,58,46,.25); }

.trust {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 22px;
  font-size: 14px;
  color: var(--ink-soft);
}

.hero-card-stack {
  position: relative;
  height: 640px;
}
@media (max-width: 960px) { .hero-card-stack { height: 560px; margin-top: 8px; } }

.hero-card-stack .card {
  position: absolute;
  top: 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.6);
  background: white;
  overflow: hidden;
}
.card-front {
  right: 0;
  width: 78%;
  z-index: 2;
  transform: rotate(2deg) translateY(10px);
}
.card-back {
  left: 0;
  width: 62%;
  top: 60px;
  z-index: 1;
  transform: rotate(-4deg);
  opacity: .92;
}

/* ---------- VALUE STRIP ---------- */
.strip {
  max-width: 1180px;
  margin: -36px auto 0;
  padding: 22px 28px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  position: relative;
  z-index: 5;
}
@media (max-width: 720px) { .strip { grid-template-columns: repeat(2, 1fr); gap: 16px; } }

.strip-item {
  text-align: center;
  padding: 14px 8px;
  border-right: 1px solid var(--line);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .5s ease, transform .5s ease;
}
.strip-item:last-child { border-right: none; }
@media (max-width: 720px) { .strip-item { border-right: none; } }
.strip-item.in { opacity: 1; transform: none; }
.strip-item .num {
  font-family: var(--serif);
  font-weight: 800;
  font-size: 32px;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.strip-item .lbl { font-size: 13px; color: var(--muted); font-weight: 500; }

/* ---------- TOUR ---------- */
.tour {
  max-width: 1180px;
  margin: 0 auto;
  padding: 100px 28px 40px;
}
.tour-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.kicker {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--green);
  margin: 0 0 12px;
}
.kicker.dark { color: var(--sand-1); }
.tour-head h2, .privacy h2, .download h2 {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}
.tour-head .sub, .privacy .sub {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}
.privacy .sub.light { color: rgba(255,255,255,0.78); }

.tour-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
@media (max-width: 860px) { .tour-grid { grid-template-columns: 1fr; } }

.tour-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .6s ease, transform .6s ease, box-shadow .3s ease;
  overflow: hidden;
  position: relative;
}
.tour-card.in { opacity: 1; transform: none; }
.tour-card:hover { box-shadow: var(--shadow-lg); }

.tour-card.alt {
  background: linear-gradient(160deg, #eef3ec, #f7f1e3);
}

.tour-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(180deg, var(--sky-1), var(--sand-2));
  display: flex;
  justify-content: center;
  align-items: flex-end;
  padding-top: 8px;
}
.tour-img img {
  width: 100%;
  height: auto;
  display: block;
}

.tour-text h3 {
  font-family: var(--serif);
  font-weight: 800;
  font-size: 24px;
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  line-height: 1.2;
}
.tour-text p { color: var(--muted); margin: 0; font-size: 16px; }
.tour-text em { font-style: normal; color: var(--ink); font-weight: 600; }

/* ---------- FEATURES ---------- */
.features {
  max-width: 1180px;
  margin: 0 auto;
  padding: 64px 28px 100px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 860px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .features { grid-template-columns: 1fr; } }

.feature {
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 22px 22px 20px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .5s ease, transform .5s ease;
}
.feature.in { opacity: 1; transform: none; }
.feature .ico { font-size: 28px; margin-bottom: 8px; }
.feature h4 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 18px;
  margin: 0 0 6px;
}
.feature p { color: var(--muted); font-size: 14.5px; margin: 0; }
.feature code {
  font-family: ui-monospace, SF Mono, Menlo, monospace;
  font-size: 13px;
  background: var(--sand-2);
  padding: 1px 6px;
  border-radius: 4px;
}

/* ---------- PRIVACY ---------- */
.privacy {
  background:
    radial-gradient(1200px 600px at 80% 0%, rgba(63,164,114,0.18), transparent 60%),
    linear-gradient(180deg, #0a2c22 0%, #0f3a2e 100%);
  color: white;
  padding: 110px 28px;
}
.privacy-inner {
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .6s ease, transform .6s ease;
}
.privacy-inner.in { opacity: 1; transform: none; }
.privacy h2 { color: white; }
.privacy .bullets {
  list-style: none;
  padding: 0;
  margin: 36px auto 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 760px;
}
@media (max-width: 720px) { .privacy .bullets { grid-template-columns: 1fr; } }
.privacy .bullets li {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 15px;
  color: rgba(255,255,255,0.85);
  text-align: left;
}
.privacy .bullets b { color: white; display: block; margin-bottom: 4px; font-weight: 700; }

/* ---------- DOWNLOAD ---------- */
.download {
  padding: 90px 28px;
  background: linear-gradient(180deg, var(--sand-2), var(--paper));
}
.dl-card {
  max-width: 760px;
  margin: 0 auto;
  background: white;
  border-radius: var(--radius-lg);
  padding: 44px 36px;
  text-align: center;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .6s ease, transform .6s ease;
}
.dl-card.in { opacity: 1; transform: none; }
.dl-card p { color: var(--muted); margin: 8px 0 22px; }
.dl-row { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 18px; }
.dl-card kbd {
  font-family: ui-monospace, SF Mono, Menlo, monospace;
  font-size: 12px;
  background: var(--sand-2);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 4px;
}
.fineprint { font-size: 13px; color: var(--muted); margin: 6px 0 0; }

/* ---------- FOOTER ---------- */
.foot {
  background: #0a2c22;
  color: rgba(255,255,255,0.75);
  padding: 40px 28px 28px;
}
.foot-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 22px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.foot-brand { display: flex; gap: 12px; align-items: center; }
.foot-brand img { border-radius: 8px; }
.foot-brand strong { color: white; display: block; font-family: var(--serif); font-size: 18px; }
.foot-brand span { font-size: 13px; }
.foot-links { display: flex; gap: 22px; flex-wrap: wrap; font-size: 14px; }
.foot-links a { color: rgba(255,255,255,0.75); }
.foot-links a:hover { color: white; }
.copy {
  text-align: center;
  font-size: 12px;
  color: rgba(255,255,255,0.5);
  margin: 18px 0 0;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}