/* YASB Cloud
 *
 * Flat surfaces, one accent, a lot of air. No gradients, no drop shadows, no decoration
 * that isn't doing a job. Colours mirror the desktop app's tokens so the two read as one
 * product, and the whole thing follows the OS light/dark setting.
 */

:root {
  --bg: #fbfbfb;
  --surface: #ffffff;
  --surface-2: #f4f4f5;
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.15);
  --ink: #131316;
  --ink-2: #5a5a63;
  --ink-3: #8b8b95;
  --accent: #0067c0;
  --accent-hover: #00559f;
  --on-accent: #ffffff;
  --ok: #0f7b0f;
  --warn: #9a5b00;
  --bad: #c42b1c;

  --r: 10px;
  --r-sm: 6px;
  --font: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, sans-serif;
  --mono: "Cascadia Mono", "SF Mono", Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316;
    --surface: #1c1c20;
    --surface-2: #232329;
    --line: rgba(255, 255, 255, 0.08);
    --line-strong: rgba(255, 255, 255, 0.15);
    --ink: #f4f4f5;
    --ink-2: #a8a8b3;
    --ink-3: #71717a;
    --accent: #4cc2ff;
    --accent-hover: #6bcdff;
    --on-accent: #00243d;
    --ok: #6ccb5f;
    --warn: #fce100;
    --bad: #ff99a4;
  }
}

*, *::before, *::after { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* --- header ---------------------------------------------------------------- */

.top {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 60px;
  padding: 0 28px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 16px;
  text-decoration: none;
  color: var(--ink);
  font-weight: 500;
}
.brand b { font-weight: 700; }
.mark {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  background: var(--ink);
  color: var(--bg);
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 14px;
}

.top nav { margin-left: auto; display: flex; align-items: center; gap: 4px; }
.top nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14px;
  padding: 7px 12px;
  border-radius: var(--r-sm);
}
.top nav a:hover { color: var(--ink); background: var(--surface-2); }

/* --- layout ---------------------------------------------------------------- */

main { max-width: 1000px; margin: 0 auto; padding: 0 28px 80px; }
main.narrow { max-width: 440px; padding-top: 72px; }

section + section { margin-top: 56px; }

h1 { font-size: 32px; line-height: 1.15; letter-spacing: -0.9px; font-weight: 680; margin: 0 0 10px; }
h2 { font-size: 19px; letter-spacing: -0.3px; font-weight: 660; margin: 0 0 16px; }
h3 { font-size: 15px; font-weight: 640; margin: 0 0 5px; }
p { margin: 0 0 14px; }
p:last-child { margin-bottom: 0; }

.lead { font-size: 17px; color: var(--ink-2); }
.dim { color: var(--ink-2); }
.tiny { font-size: 13px; }
.mono { font-family: var(--mono); }

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 24px 26px;
}
.card + .card { margin-top: 14px; }

/* --- hero ------------------------------------------------------------------- */

.hero { padding: 88px 0 72px; max-width: 640px; }
.hero h1 { font-size: 52px; letter-spacing: -2px; line-height: 1.05; }
.hero .lead { font-size: 19px; margin: 18px 0 30px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 640;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 28px; }
.grid-3 p { color: var(--ink-2); font-size: 14px; }

/* --- controls --------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font: inherit;
  font-size: 14px;
  font-weight: 550;
  padding: 10px 20px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--accent); color: var(--on-accent); border-color: transparent; font-weight: 620; }
.btn.primary:hover { background: var(--accent-hover); }
.btn.danger { color: var(--bad); border-color: var(--line-strong); }
.btn.danger:hover { border-color: var(--bad); }
.btn.sm { padding: 6px 12px; font-size: 13px; }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn:disabled:hover { border-color: var(--line-strong); background: var(--surface); }

a { color: var(--accent); }

label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 14px; }
input[type="email"], input[type="password"], input[type="text"] {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
}
input:focus-visible { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }

/* --- feedback ---------------------------------------------------------------- */

.note {
  padding: 12px 16px;
  border-radius: var(--r-sm);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  background: var(--surface);
  font-size: 14px;
  margin-bottom: 18px;
}
.note.bad { border-left-color: var(--bad); }
.note.ok { border-left-color: var(--ok); }
.note.warn { border-left-color: var(--warn); }
[hidden] { display: none !important; }

.pill {
  display: inline-block;
  font-size: 12px;
  font-weight: 620;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid currentColor;
  color: var(--ink-3);
}
.pill.ok { color: var(--ok); }
.pill.warn { color: var(--warn); }
.pill.bad { color: var(--bad); }

/* --- data -------------------------------------------------------------------- */

.meter { height: 5px; background: var(--surface-2); border-radius: 3px; overflow: hidden; margin: 12px 0 8px; }
.meter > span { display: block; height: 100%; width: 0; background: var(--accent); transition: width 250ms ease; }
.meter > span.warn { background: var(--warn); }
.meter > span.bad { background: var(--bad); }

.list { list-style: none; margin: 0; padding: 0; }
.list > li {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
}
.list > li:last-child { border-bottom: 0; }
.list .grow { flex: 1; min-width: 0; }
.list .name { font-weight: 580; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.list .meta { font-size: 13px; color: var(--ink-2); margin-top: 2px; }

.kv { display: grid; grid-template-columns: 1fr auto; gap: 12px 20px; font-size: 14px; }
.kv dt { color: var(--ink-2); margin: 0; }
.kv dd { margin: 0; text-align: right; }

.stat { display: flex; align-items: baseline; gap: 10px; }
.stat b { font-size: 26px; font-weight: 680; letter-spacing: -0.6px; }

/* --- plans -------------------------------------------------------------------- */

.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px;
  display: flex;
  flex-direction: column;
}
.plan.pick { border-color: var(--accent); }
.plan .price { font-size: 34px; font-weight: 680; letter-spacing: -1.2px; margin: 10px 0 0; }
.plan .price small { font-size: 14px; font-weight: 400; color: var(--ink-2); letter-spacing: 0; }
.plan ul { list-style: none; margin: 18px 0 22px; padding: 0; font-size: 14px; color: var(--ink-2); }
.plan li { padding: 6px 0; }
.plan .btn { margin-top: auto; }

/* --- pairing code -------------------------------------------------------------- */

.code {
  font-family: var(--mono);
  font-size: 32px;
  font-weight: 680;
  letter-spacing: 7px;
  text-align: center;
  margin: 0;
  padding: 18px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
  background: var(--bg);
}

/* --- account nav ---------------------------------------------------------------- */

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 28px; flex-wrap: wrap; }
.tabs button {
  font: inherit;
  font-size: 14px;
  font-weight: 550;
  color: var(--ink-2);
  background: none;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 14px;
  cursor: pointer;
  margin-bottom: -1px;
}
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }

footer.foot {
  border-top: 1px solid var(--line);
  padding: 26px 28px;
  text-align: center;
  color: var(--ink-3);
  font-size: 13px;
}
footer.foot a { color: var(--ink-2); text-decoration: none; }
footer.foot a:hover { color: var(--ink); }

/* --- responsive ------------------------------------------------------------------ */

@media (max-width: 640px) {
  .top { padding: 0 16px; gap: 10px; }
  main { padding: 0 16px 56px; }
  .hero { padding: 56px 0 44px; }
  .hero h1 { font-size: 36px; letter-spacing: -1.2px; }
  .hero .lead { font-size: 16px; }
  .card { padding: 20px; }
  .list > li { flex-wrap: wrap; }
  .code { font-size: 24px; letter-spacing: 4px; }
}