/* SeekSync website. Same look as the app (DESIGN.md): warm grey, white rounded cards, one yellow accent,
   pill buttons, Inter Tight (SIL Open Font License, see fonts/OFL.txt). */
@font-face {
  font-family: "Inter Tight"; font-style: normal; font-display: swap; font-weight: 100 900;
  src: url(fonts/inter-tight-latin-wght-normal.woff2) format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Inter Tight"; font-style: normal; font-display: swap; font-weight: 100 900;
  src: url(fonts/inter-tight-latin-ext-wght-normal.woff2) format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

:root {
  --bg: #E0E0E0;
  --surface: #FFFFFF;
  --surface-muted: #F0F0F0;
  --ink: #111111;
  --ink-raised: #232323;
  --accent: #FCF251;
  --accent-soft: #FEF99A;
  --text: #0A0A0A;
  --body: #454545;
  --muted: #6E6E70;          /* darker than the app's #8E8E90 so small text passes contrast on grey */
  --on-ink: #FFFFFF;
  --on-ink-muted: #B9B9BB;
  --line: #CFCFCF;
  --radius-card: 24px;
  --radius-big: 32px;
  --font: "Inter Tight", "Geist", Inter, system-ui, -apple-system, "Segoe UI", sans-serif;
  --gutter: 20px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--body);
  font-family: var(--font); font-size: 18px; line-height: 1.55; -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: .88em; background: var(--surface-muted);
  padding: .1em .4em; border-radius: 6px; color: var(--text); overflow-wrap: anywhere; }
.dark code { background: var(--ink-raised); color: var(--on-ink); }
em { font-style: normal; font-weight: 600; color: var(--text); }
.dark em { color: var(--on-ink); }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; border-radius: 8px; }
.dark :focus-visible, .final :focus-visible { outline-color: var(--accent); }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 var(--gutter); }
.narrow { max-width: 820px; }
.center { text-align: center; justify-content: center; }
.small { font-size: 15px; color: var(--muted); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--on-ink); padding: 10px 16px; border-radius: 999px; z-index: 100; }
.skip:focus { left: 12px; }

h1, h2, h3, h4 { color: var(--text); margin: 0; letter-spacing: -0.03em; line-height: 1.05; font-weight: 700; }
h1 { font-size: clamp(34px, 5.4vw, 66px); letter-spacing: -0.042em; line-height: 1; max-width: 20ch; }
h2 { font-size: clamp(32px, 4.8vw, 56px); letter-spacing: -0.04em; }
h3 { font-size: 22px; line-height: 1.15; letter-spacing: -0.02em; }
h4 { font-size: 19px; letter-spacing: -0.02em; }
.dark h2, .dark h3, .end h2 { color: var(--on-ink); }

/* Buttons: always pills */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 0 22px;
  border-radius: 999px; font: 600 16px/1 var(--font); text-decoration: none; border: 1.5px solid transparent;
  cursor: pointer; transition: transform .15s ease, background-color .15s ease; white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn.primary { background: var(--accent); color: var(--ink); border-color: var(--ink); }
.btn.primary:hover { background: var(--accent-soft); }
.btn.dark { background: var(--ink); color: var(--on-ink); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn.ghost-light { background: transparent; color: var(--on-ink); border-color: var(--on-ink); }
.btn.big { min-height: 56px; padding: 0 30px; font-size: 18px; }
.btn.small { min-height: 38px; padding: 0 16px; font-size: 15px; }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(224, 224, 224, .88); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); }
.nav-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 700; font-size: 22px; letter-spacing: -0.03em; color: var(--text); }
.brand img { border-radius: 10px; }
.nav-links { display: flex; gap: 28px; }
.nav-links a { text-decoration: none; font-weight: 500; font-size: 16px; color: var(--body); }
.nav-links a:hover { color: var(--text); text-decoration: underline; text-underline-offset: 6px; }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.lang { display: inline-flex; background: var(--surface-muted); border-radius: 999px; padding: 3px; }
.lang button { border: 0; background: transparent; font: 600 14px/1 var(--font); color: var(--muted); min-width: 40px; min-height: 32px; border-radius: 999px; cursor: pointer; }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--on-ink); }

/* Hero */
.hero { padding: clamp(40px, 7vw, 96px) 0 clamp(32px, 5vw, 64px); }
.eyebrow { display: inline-block; margin: 0 0 22px; padding: 7px 16px; background: var(--surface); border-radius: 999px; font-weight: 600; font-size: 15px; color: var(--text); }
.mark { background: linear-gradient(transparent 62%, var(--accent) 62%, var(--accent) 92%, transparent 92%); padding: 0 .06em; -webkit-box-decoration-break: clone; box-decoration-break: clone; }
.lede { font-size: clamp(19px, 2.2vw, 24px); line-height: 1.45; max-width: 36em; margin: 26px 0 0; color: var(--body); }
.cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
.meta { margin: 16px 0 0; font-size: 15px; color: var(--muted); }
.shot { margin: 0; background: var(--surface); border-radius: var(--radius-big); padding: 10px; border: 1px solid var(--line); }
.shot img { border-radius: 22px; width: 100%; }
.hero-shot { margin-top: clamp(36px, 5vw, 64px); }

/* Sections */
.section { padding: clamp(56px, 8vw, 112px) 0; }
.section .sub { font-size: clamp(18px, 2vw, 22px); margin: 14px 0 0; max-width: 36em; }
.dark { background: var(--ink); color: var(--on-ink-muted); }
.dark .sub { color: var(--on-ink-muted); }
.tint { background: var(--surface-muted); }
.end { padding-top: 0; }

.cards { display: grid; gap: 18px; margin-top: 40px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.cards.grid { grid-template-columns: repeat(3, 1fr); }
.card { background: var(--surface); border-radius: var(--radius-card); padding: 28px; }
.card h3 { margin-bottom: 10px; }
.card p { margin: 0; }
.card.flat { background: var(--surface-muted); }
.tint .card { background: var(--surface); }
.num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent); color: var(--ink); font-weight: 700; margin-bottom: 18px; }

/* Steps */
.steps { list-style: none; counter-reset: step; margin: 44px 0 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.steps li { counter-increment: step; background: var(--ink-raised); border-radius: var(--radius-card); padding: 28px; }
.steps li::before { content: counter(step); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent); color: var(--ink); font-weight: 700; margin-bottom: 18px; }
.steps h3 { margin-bottom: 10px; }
.steps p { margin: 0; color: var(--on-ink-muted); }

/* Split */
.split { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(28px, 5vw, 72px); align-items: center; }
.split p { margin: 18px 0 0; }
.ticks { list-style: none; margin: 22px 0 0; padding: 0; display: grid; gap: 12px; }
.ticks li { position: relative; padding-left: 34px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 4px; width: 22px; height: 22px; border-radius: 50%; background: var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23111' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12.5l4.5 4.5L19 7.5'/%3E%3C/svg%3E") center / 14px no-repeat; }

/* Download */
.os h3 { font-size: 28px; }
.os .small { margin: 0 0 20px; }
.mini { margin: 24px 0 0; padding-left: 20px; display: grid; gap: 10px; font-size: 16px; }
.connect { margin-top: 64px; }
.connect h3 { font-size: 28px; text-align: center; }
.connect .small { margin-top: 22px; }
.card.os.pick { outline: 3px solid var(--ink); }

/* Good to know */
.know { list-style: none; margin: 34px 0 0; padding: 0; display: grid; gap: 22px; }
.know li { padding-bottom: 22px; border-bottom: 1px solid var(--ink-raised); }
.know li:last-child { border: 0; padding-bottom: 0; }
.know strong { color: var(--on-ink); font-weight: 600; }

/* FAQ */
details { background: var(--surface); border-radius: 20px; padding: 0 24px; margin-top: 14px; }
details:first-of-type { margin-top: 36px; }
summary { cursor: pointer; list-style: none; font-weight: 600; font-size: 19px; color: var(--text); padding: 20px 36px 20px 0; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 0; top: 50%; transform: translateY(-50%); font-size: 28px; font-weight: 400; line-height: 1; }
details[open] summary::after { content: "\2212"; }
details p { margin: 0 0 22px; }

/* Final call */
.final { background: var(--ink); border-radius: var(--radius-big); padding: clamp(40px, 7vw, 88px) var(--gutter); text-align: center; }
.final h2 { color: var(--on-ink); margin: 0 auto; max-width: 14ch; }
.final p { color: var(--on-ink-muted); margin: 16px 0 0; font-size: 20px; }
.final .cta { margin-top: 30px; }

/* Footer */
.foot { padding: 8px 0 48px; }
.foot-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px; }
.foot .small { margin: 0; max-width: 42em; }
.foot a { text-underline-offset: 3px; }

@media (max-width: 980px) {
  .cards.three, .steps, .cards.grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; }
  .nav-links { display: none; }
}
@media (max-width: 640px) {
  body { font-size: 17px; }
  .cards.three, .cards.two, .cards.grid, .steps { grid-template-columns: 1fr; }
  .card, .steps li { padding: 24px; }
  .nav-actions .btn { display: none; }
  .btn.big { width: 100%; }
  .cta { flex-direction: column; }
  .shot { padding: 6px; border-radius: 22px; }
  .shot img { border-radius: 16px; }
  .foot-row { flex-direction: column; align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
  .btn:hover { transform: none; }
}