/* Public landing page (/welcome). Self-contained: it is the only stylesheet a signed-out visitor loads
   besides login.css, and it shares that page's palette. */
:root {
  --bg: #0b0f14; --panel: #121821; --panel-2: #0f141b; --border: #243040; --border-strong: #2c3a4b;
  --text: #e8ecef; --muted: #93a0ad; --dim: #5c6b7a; --accent: #00aff0; --accent-2: #1abbff; --accent-soft: rgba(0, 175, 240, .12);
  --radius: 16px; --max: 1080px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 16px; line-height: 1.5; color: var(--text); background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, p, ul, ol { margin: 0; }
svg:not(.brand__logo) { width: 1em; height: 1em; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 46px; padding: 0 22px; border-radius: 999px; border: 1px solid transparent;
  font: inherit; font-weight: 700; font-size: 14px; text-transform: uppercase; letter-spacing: .04em;
  text-decoration: none; cursor: pointer; white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-2); }
.btn--ghost { border-color: var(--border-strong); color: var(--text); background: transparent; }
.btn--ghost:hover { background: var(--accent-soft); border-color: var(--accent); }
.btn--sm { height: 38px; padding: 0 16px; font-size: 13px; }

/* header */
.top {
  position: sticky; top: 0; z-index: 2;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: var(--max); margin: 0 auto; padding: 14px 24px;
  background: rgba(11, 15, 20, .85); backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; color: var(--text); letter-spacing: .01em; }
.brand:hover { text-decoration: none; }
.brand__logo { width: 28px; height: 28px; flex: none; } /* white outer circle, blue disc, white ring (colours are in the SVG) */
.top__nav { display: flex; align-items: center; gap: 22px; }
.top__nav > a:not(.btn) { color: var(--muted); font-weight: 600; font-size: 14px; }
.top__nav > a:not(.btn):hover { color: var(--text); text-decoration: none; }

main { max-width: var(--max); margin: 0 auto; padding: 24px 24px 64px; }

/* hero */
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px; align-items: center; padding: 40px 0 56px; }
.eyebrow { color: var(--accent); font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .12em; margin-bottom: 14px; }
h1 { font-size: clamp(30px, 4.4vw, 46px); line-height: 1.12; font-weight: 800; letter-spacing: -.01em; }
.lead { margin-top: 18px; font-size: 18px; color: var(--muted); max-width: 54ch; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.fineprint { margin-top: 18px; font-size: 13px; color: var(--dim); max-width: 54ch; }

/* illustrative app mock (pure CSS) */
.hero__art { display: flex; justify-content: center; }
.mock {
  width: 100%; max-width: 440px; border: 1px solid var(--border); border-radius: 18px; overflow: hidden;
  background: var(--panel-2); box-shadow: 0 30px 80px rgba(0, 0, 0, .55), 0 0 0 1px rgba(255, 255, 255, .02);
  transform: rotate(-1.5deg);
}
.mock__bar { display: flex; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--border); background: var(--panel); }
.mock__bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.mock__body { display: grid; grid-template-columns: 1fr 84px; gap: 12px; padding: 14px; }
.mock__post { border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: var(--panel); }
.mock__head { display: flex; align-items: center; gap: 10px; padding: 10px 12px; }
.mock__avatar { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, #ff7a59, #ffcd38); flex: none; }
.mock__who { display: flex; flex-direction: column; line-height: 1.2; }
.mock__who b { font-size: 13px; }
.mock__who small { font-size: 11px; color: var(--muted); }
.mock__more { margin-left: auto; color: var(--dim); letter-spacing: .1em; font-weight: 700; }
.mock__media {
  position: relative; aspect-ratio: 4 / 3;
  background:
    radial-gradient(circle at 25% 30%, rgba(255, 255, 255, .22), transparent 38%),
    radial-gradient(circle at 75% 70%, rgba(0, 175, 240, .45), transparent 45%),
    linear-gradient(160deg, #1d3557, #457b9d 55%, #a8dadc);
}
.mock__badge { position: absolute; top: 10px; right: 10px; padding: 3px 8px; border-radius: 999px; background: rgba(0, 0, 0, .55); color: #fff; font-size: 11px; font-weight: 700; }
.mock__actions { display: flex; gap: 14px; padding: 10px 12px; color: var(--muted); font-size: 20px; }
.mock__actions svg:first-child { color: #ff4d6d; fill: #ff4d6d; }
.mock__bookmark { margin-left: auto; }
.mock__side { display: flex; flex-direction: column; gap: 10px; }
.mock__story { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.mock__story span { width: 52px; height: 52px; border-radius: 50%; padding: 3px; background: linear-gradient(135deg, var(--accent), #7c4dff); }
.mock__story span::after { content: ""; display: block; width: 100%; height: 100%; border-radius: 50%; background: var(--panel-2); box-shadow: inset 0 0 0 2px var(--panel-2); }
.mock__story i { width: 36px; height: 6px; border-radius: 3px; background: var(--border-strong); }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.cards--two { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 16px; }
.card { padding: 22px 22px 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); display: flex; flex-direction: column; gap: 12px; }
.card h2 { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 800; }
.card__icon { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); font-size: 17px; flex: none; }
.card ul { padding-left: 18px; display: flex; flex-direction: column; gap: 8px; color: var(--muted); font-size: 15px; }
.card p { color: var(--muted); font-size: 15px; }
.card .btn { align-self: flex-start; margin-top: auto; }

/* access */
.access { margin: 40px 0 0; padding: 36px 24px; border: 1px solid var(--border); border-radius: 20px; background: linear-gradient(180deg, rgba(0, 175, 240, .10), rgba(0, 175, 240, .03)); scroll-margin-top: 80px; }
.access__inner { max-width: 640px; margin: 0 auto; display: flex; flex-direction: column; gap: 22px; align-items: flex-start; }
.access h2 { font-size: 26px; font-weight: 800; }
.steps { padding-left: 22px; display: flex; flex-direction: column; gap: 12px; font-size: 16px; color: var(--muted); }
.steps b { color: var(--text); }

/* footer */
.foot { max-width: var(--max); margin: 0 auto; padding: 22px 24px 40px; border-top: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; color: var(--dim); font-size: 13px; }
.foot nav { display: flex; gap: 18px; }
.foot a { color: var(--muted); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; gap: 36px; padding-top: 16px; }
  .hero__art { order: -1; }
  .mock { transform: none; max-width: 400px; }
  .cards, .cards--two { grid-template-columns: 1fr; }
  .top__nav > a:not(.btn) { display: none; }
}
@media (max-width: 480px) {
  .mock__body { grid-template-columns: 1fr; }
  .mock__side { flex-direction: row; justify-content: space-around; }
  .hero__actions .btn { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }