/* Trip Organizer — presentation site. No external fonts or scripts. */
:root {
  --sea: #1f6f8b;
  --sea-deep: #134a5e;
  --sea-soft: #e3f0f4;
  --sand: #f7f3ec;
  --ink: #17242b;
  --muted: #5b6a72;
  --line: #dbe3e7;
  --card: #ffffff;
  --bg: #fbfaf7;
  --urgent: #b3261e;
  --urgent-soft: #fde7e4;
  --important: #9a5b00;
  --important-soft: #fff0d6;
  --ok: #2e7d4f;
  --ok-soft: #ddf3e4;
  --radius: 18px;
  --shadow: 0 1px 2px rgba(23, 36, 43, .06), 0 12px 32px rgba(23, 36, 43, .08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --sea: #7cc4dd;
    --sea-deep: #b9e3f2;
    --sea-soft: #16323d;
    --sand: #1c2124;
    --ink: #e8eef1;
    --muted: #9fb0b8;
    --line: #2b363c;
    --card: #182024;
    --bg: #111719;
    --urgent: #ffb4ab;
    --urgent-soft: #4a1714;
    --important: #ffc56b;
    --important-soft: #3d2900;
    --ok: #8bd6a6;
    --ok-soft: #113d25;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--sea); }
img, svg { display: block; max-width: 100%; }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--ink); text-decoration: none; font-size: 18px; }
.brand svg { width: 30px; height: 30px; }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.top nav a { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 10px; font-size: 15px; }
.top nav a:hover { color: var(--ink); background: var(--sea-soft); }
.top nav .lang { border: 1px solid var(--line); font-weight: 600; color: var(--ink); }
@media (max-width: 720px) { .top nav .hide-sm { display: none; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 52px; padding: 0 22px; border-radius: 14px;
  font-weight: 600; font-size: 16px; text-decoration: none;
  border: 1px solid transparent; transition: transform .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--sea); color: #fff; }
@media (prefers-color-scheme: dark) { .btn-primary { color: #06212b; } }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--card); }

/* Hero */
.hero { padding: 72px 0 56px; }
.hero .wrap { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; gap: 40px; } .hero { padding-top: 40px; } }
.eyebrow { display: inline-block; font-size: 14px; font-weight: 600; color: var(--sea); background: var(--sea-soft); padding: 6px 12px; border-radius: 999px; }
h1 { font-size: clamp(36px, 5.2vw, 58px); line-height: 1.08; letter-spacing: -.02em; margin: 18px 0 18px; }
h1 em { font-style: normal; color: var(--sea); }
.lead { font-size: 19px; color: var(--muted); max-width: 34em; margin: 0 0 28px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.note { margin-top: 14px; font-size: 14px; color: var(--muted); }

/* Phone mock-up (pure HTML of the dashboard) */
.phone {
  width: min(340px, 100%); margin-inline: auto;
  background: var(--card); border: 10px solid #0e1417; border-radius: 42px;
  box-shadow: var(--shadow); overflow: hidden;
}
@media (prefers-color-scheme: dark) { .phone { border-color: #000; } }
.phone .cover { height: 112px; background: linear-gradient(135deg, #1f6f8b, #3f9fb5 55%, #e7b46a); padding: 16px; color: #fff; display: flex; flex-direction: column; justify-content: flex-end; }
.phone .cover b { font-size: 19px; }
.phone .cover span { font-size: 12.5px; opacity: .9; }
.phone .body { padding: 12px; display: grid; gap: 10px; font-size: 13px; }
.mini { border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px; background: var(--card); }
.mini small { display: block; font-size: 11px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); margin-bottom: 4px; }
.mini .t { font-weight: 700; font-size: 14px; }
.mini .s { color: var(--muted); font-size: 12.5px; }
.mini.next { border-color: var(--sea); background: var(--sea-soft); }
.mini.urgent { background: var(--urgent-soft); border-color: transparent; }
.mini.urgent small { color: var(--urgent); }
.ack { margin-top: 8px; display: inline-block; padding: 6px 10px; border-radius: 10px; background: var(--urgent); color: #fff; font-weight: 700; font-size: 12px; }
@media (prefers-color-scheme: dark) { .ack { color: #3b0a07; } }
.grid6 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.grid6 div { border: 1px solid var(--line); border-radius: 12px; padding: 8px 4px; text-align: center; font-size: 11.5px; color: var(--muted); }
.grid6 i { display: block; font-style: normal; font-size: 18px; }
.tabbar { display: grid; grid-template-columns: repeat(5, 1fr); border-top: 1px solid var(--line); font-size: 10.5px; text-align: center; color: var(--muted); padding: 8px 0 10px; }
.tabbar .on { color: var(--sea); font-weight: 700; }

/* Sections */
section { padding: 72px 0; }
section.alt { background: var(--sand); }
h2 { font-size: clamp(28px, 3.6vw, 40px); line-height: 1.15; letter-spacing: -.015em; margin: 0 0 14px; }
.sub { color: var(--muted); max-width: 40em; margin: 0 0 36px; font-size: 18px; }

/* Before / after */
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 820px) { .compare { grid-template-columns: 1fr; } }
.chatlog, .organized { border-radius: var(--radius); padding: 22px; background: var(--card); border: 1px solid var(--line); }
.chatlog h3, .organized h3 { margin: 0 0 14px; font-size: 18px; }
.bubble { background: var(--sea-soft); border-radius: 14px 14px 14px 4px; padding: 8px 12px; margin: 6px 0; width: fit-content; max-width: 90%; font-size: 15px; }
.bubble.lost { outline: 2px dashed var(--urgent); }
.bubble b { font-size: 12px; color: var(--muted); display: block; }
.organized ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.organized li { display: flex; gap: 12px; align-items: flex-start; padding: 12px; border-radius: 12px; background: var(--bg); border: 1px solid var(--line); font-size: 15px; }
.organized li strong { display: block; }
.dot { flex: none; width: 10px; height: 10px; border-radius: 50%; margin-top: 7px; background: var(--sea); }
.dot.u { background: var(--urgent); }
.dot.i { background: var(--important); }

/* Features */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 900px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .features { grid-template-columns: 1fr; } }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.feature .ic { width: 44px; height: 44px; border-radius: 12px; background: var(--sea-soft); color: var(--sea); display: grid; place-items: center; margin-bottom: 14px; }
.feature .ic svg { width: 24px; height: 24px; }
.feature h3 { margin: 0 0 6px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: s; }
@media (max-width: 820px) { .steps { grid-template-columns: 1fr; } }
.step { padding: 22px; border-radius: var(--radius); background: var(--card); border: 1px solid var(--line); }
.step::before { counter-increment: s; content: counter(s); display: grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: var(--sea); color: #fff; font-weight: 700; margin-bottom: 12px; }
@media (prefers-color-scheme: dark) { .step::before { color: #06212b; } }
.step h3 { margin: 0 0 6px; font-size: 18px; }
.step p { margin: 0; color: var(--muted); font-size: 15.5px; }
.code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--sea-soft); color: var(--sea-deep); padding: 2px 8px; border-radius: 8px; font-weight: 700; letter-spacing: .06em; }

/* Audience chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chips span { padding: 10px 16px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); font-weight: 600; font-size: 15px; }

/* Trust */
.trust { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 900px) { .trust { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .trust { grid-template-columns: 1fr; } }
.trust div { padding: 18px; border-left: 3px solid var(--sea); background: var(--card); border-radius: 0 14px 14px 0; }
.trust strong { display: block; margin-bottom: 4px; }
.trust span { color: var(--muted); font-size: 15px; }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding: 16px 0; }
summary { cursor: pointer; font-weight: 600; font-size: 17px; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--sea); font-size: 22px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { color: var(--muted); margin: 10px 0 0; }

/* Final CTA */
.final { text-align: center; background: var(--sea); color: #fff; border-radius: 28px; padding: 56px 24px; }
@media (prefers-color-scheme: dark) { .final { background: var(--sea-soft); color: var(--ink); } }
.final h2 { margin-bottom: 10px; }
.final p { opacity: .9; margin: 0 auto 26px; max-width: 34em; }
.final .btn-primary { background: #fff; color: var(--sea-deep); }
@media (prefers-color-scheme: dark) { .final .btn-primary { background: var(--sea); color: #06212b; } }

/* Footer */
footer { padding: 40px 0 56px; color: var(--muted); font-size: 15px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); padding-top: 28px; }
footer nav { display: flex; flex-wrap: wrap; gap: 8px 18px; }
footer a { color: var(--muted); }

/* Legal pages */
.legal { max-width: 780px; padding: 48px 0 24px; }
.legal h1 { font-size: clamp(30px, 4vw, 42px); }
.legal h2 { font-size: 22px; margin-top: 36px; }
.legal .summary { background: var(--sea-soft); border-radius: var(--radius); padding: 18px 22px; }
.legal li { margin: 6px 0; }
.legal table { width: 100%; border-collapse: collapse; font-size: 15px; }
.legal th, .legal td { text-align: left; border-bottom: 1px solid var(--line); padding: 10px 8px; vertical-align: top; }

:focus-visible { outline: 3px solid var(--sea); outline-offset: 2px; border-radius: 6px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .btn { transition: none; } }