/* Kosh site. Same identity as the app: ledger ink on warm paper, a teal
   accent, coral for spend, monospaced tabular amounts. */

:root {
  --body: #F4F6F2;
  --raised: #FFFFFF;
  --line: #DDE3DF;
  --ink: #16211F;
  --soft: #5C6B66;
  --accent: #0E7C66;
  --accent-ink: #FFFFFF;
  --accent-soft: #E6F3EE;
  --expense: #C8502E;
  --income: #1F8A5B;
  --deep: #0E3B32;
  --deep-ring: #145347;
  --on-deep: #E9F3EE;
  --on-deep-soft: #A9CFC2;
  --gold: #E2A82A;
  --text: "Manrope", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --body: #101614; --raised: #1A2320; --line: #2A3531; --ink: #E8ECE9; --soft: #9AA8A2;
    --accent: #4FCFAE; --accent-ink: #07201A; --accent-soft: #17352D; --expense: #EF8A6B;
    --income: #5CC893; --deep: #0B2B25; --deep-ring: #123D34;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --body: #101614; --raised: #1A2320; --line: #2A3531; --ink: #E8ECE9; --soft: #9AA8A2;
  --accent: #4FCFAE; --accent-ink: #07201A; --accent-soft: #17352D; --expense: #EF8A6B;
  --income: #5CC893; --deep: #0B2B25; --deep-ring: #123D34;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--body); color: var(--ink); font: 17px/1.55 var(--text); overflow-x: hidden; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
.mono { font-family: var(--mono); font-variant-numeric: tabular-nums; }

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 24px; } }

.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 20px 0; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-key { width: 36px; height: 36px; border-radius: 11px; background: var(--accent); color: var(--accent-ink); display: grid; place-items: center; font: 600 18px var(--mono); }
.brand b { font-size: 20px; font-weight: 800; }
.bar nav { display: flex; gap: 20px; font-size: 14px; font-weight: 700; }
.bar nav a { text-decoration: none; color: var(--ink); }
.bar nav a:hover { color: var(--accent); }

.hero { display: grid; grid-template-columns: minmax(0, 1fr); gap: 32px; align-items: center; padding: 24px 0 56px; }
@media (min-width: 820px) { .hero { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; padding: 40px 0 64px; } }
.hero h1 { margin: 0 0 18px; font-size: clamp(36px, 6vw, 52px); line-height: 1.05; letter-spacing: -1.2px; font-weight: 800; }
.hero p { margin: 0 0 20px; font-size: 18px; color: var(--soft); }
.cta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.cta small { font-size: 13px; color: var(--soft); }
.play { display: inline-flex; align-items: center; gap: 10px; background: var(--ink); color: var(--body); text-decoration: none; border-radius: 14px; padding: 14px 20px; font-weight: 800; font-size: 15px; }
.play:hover { background: var(--accent); color: var(--accent-ink); }

.card { width: 100%; max-width: 320px; margin: 0 auto; background: var(--deep); border-radius: 28px; padding: 22px; color: var(--on-deep); box-shadow: 0 30px 60px rgba(14, 59, 50, .3); position: relative; overflow: hidden; }
.card::before { content: ""; position: absolute; right: -40px; top: -50px; width: 160px; height: 160px; border-radius: 50%; background: var(--deep-ring); }
.card > * { position: relative; }
.card .label { font-size: 12px; font-weight: 700; color: var(--on-deep-soft); }
.card .big { font: 600 40px/1.1 var(--mono); letter-spacing: -1px; margin: 6px 0 14px; }
.card .sms { background: #FFFFFF; color: #16211F; border-radius: 16px; padding: 12px 14px; }
.card .sms .tag { font-size: 11px; font-weight: 800; color: #0A5F4E; }
.card .sms .row { display: flex; justify-content: space-between; gap: 10px; font-weight: 700; font-size: 14px; margin: 6px 0; }
.card .sms .row .mono { color: #C8502E; }
.card .sms .raw { font: 500 11px/1.4 var(--mono); color: #5C6B66; }
.card .foot { display: flex; justify-content: space-between; font-size: 13px; margin-top: 12px; }
.card .foot span:first-child { color: var(--on-deep-soft); }

.features { background: var(--raised); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); padding: 56px 0; }
.feat { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; align-items: center; }
.feat + .feat { margin-top: 56px; }
@media (min-width: 820px) { .feat { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; } .feat.flip .shot { order: 2; } }
.feat h2 { margin: 0 0 10px; font-size: clamp(26px, 4vw, 32px); letter-spacing: -0.8px; line-height: 1.15; }
.feat p { margin: 0; color: var(--soft); }
.shot { margin: 0; background: var(--body); border: 1px solid var(--line); border-radius: 28px; padding: 14px; }
.shot img { border-radius: 18px; margin: 0 auto; max-height: 560px; width: auto; }

.three { display: grid; grid-template-columns: minmax(0, 1fr); gap: 24px; padding: 56px 0; }
@media (min-width: 720px) { .three { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.three h3 { margin: 0 0 6px; font-size: 18px; }
.three p { margin: 0; font-size: 15px; color: var(--soft); }

footer { background: var(--ink); color: var(--line); font-size: 13px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 28px; padding-bottom: 28px; }
footer nav { display: flex; gap: 18px; }
footer a { color: inherit; }

.doc { max-width: 720px; padding: 8px 0 56px; }
.doc h1 { font-size: clamp(32px, 5vw, 44px); letter-spacing: -1px; margin: 16px 0 6px; line-height: 1.1; }
.doc .meta { color: var(--soft); margin: 0 0 24px; font-size: 15px; }
.doc h2 { font-size: 20px; margin: 30px 0 8px; }
.doc p, .doc li { font-size: 16px; }
.doc ul { padding-left: 22px; }
.doc .contact { padding: 14px 16px; background: var(--raised); border: 1px solid var(--line); border-radius: 14px; }

@media (prefers-reduced-motion: no-preference) {
  .play { transition: background .15s ease, color .15s ease; }
}