/* Aura Tab site — dark glass, responsive, vanilla. */
:root {
  --bg0: #0b1026;
  --bg1: #1b1440;
  --card: rgba(255, 255, 255, .07);
  --stroke: rgba(255, 255, 255, .16);
  --text: #f2f5fb;
  --dim: rgba(226, 232, 244, .72);
  --faint: rgba(226, 232, 244, .5);
  --a1: #818cf8;
  --a2: #a855f7;
  --a3: #22d3ee;
  --r: 20px;
  --font: "Inter", -apple-system, "Segoe UI", sans-serif;
  --disp: "Space Grotesk", "Inter", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; font-family: var(--font); color: var(--text);
  background:
    radial-gradient(60% 40% at 85% 5%, rgba(99, 102, 241, .35), transparent 65%),
    radial-gradient(45% 35% at 8% 90%, rgba(34, 211, 238, .22), transparent 65%),
    radial-gradient(55% 45% at 45% 55%, rgba(168, 85, 247, .2), transparent 70%),
    linear-gradient(165deg, var(--bg0), var(--bg1) 60%, #0a2540);
  background-attachment: fixed;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
.skip { position: fixed; top: -70px; left: 12px; z-index: 200; background: #fff; color: #111; padding: 10px 16px; border-radius: 12px; font-weight: 700; }
.skip:focus { top: 12px; }
a { color: var(--a3); }
:focus-visible { outline: 2px solid var(--a3); outline-offset: 2px; }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 22px;
  padding: 12px 28px;
  background: rgba(11, 16, 38, .72);
  backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--stroke);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-family: var(--disp); font-weight: 700; font-size: 18px; }
.brand img { border-radius: 7px; }
.nav nav { display: flex; gap: 18px; margin-left: auto; }
.nav nav a { color: var(--dim); text-decoration: none; font-size: 14px; font-weight: 600; }
.nav nav a:hover, .nav nav a.active { color: #fff; }

.btn {
  display: inline-block; padding: 10px 20px; border-radius: 999px;
  font-weight: 700; font-size: 14px; text-decoration: none; cursor: pointer;
  border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, .12); color: var(--text);
}
.btn.primary { background: linear-gradient(135deg, #4f46e5, #7c3aed 60%, #0e7490); border-color: rgba(255, 255, 255, .4); color: #fff; box-shadow: 0 6px 22px rgba(99, 102, 241, .45); }
.btn.big { padding: 14px 28px; font-size: 16px; }
.btn:hover { filter: brightness(1.12); }

main { max-width: 1120px; margin: 0 auto; padding: 0 24px 60px; }
section { padding: 56px 0 8px; scroll-margin-top: 70px; }
h1 { font-family: var(--disp); font-size: clamp(44px, 7vw, 84px); margin: 0; letter-spacing: -.03em; line-height: 1.02; }
h2 { font-family: var(--disp); font-size: clamp(28px, 4vw, 42px); letter-spacing: -.02em; margin: 0 0 6px; }
.section-sub { color: var(--dim); margin: 0 0 26px; max-width: 640px; }

/* hero */
.hero { display: grid; grid-template-columns: 1fr 1.2fr; gap: 36px; align-items: center; padding-top: 64px; }
.kicker { color: var(--a3); font-weight: 700; font-size: 13px; letter-spacing: .12em; text-transform: uppercase; margin: 0 0 10px; }
.tagline { font-family: var(--disp); font-size: clamp(19px, 2.6vw, 25px); color: var(--dim); margin: 10px 0 6px; }
.sub { color: var(--dim); margin: 0 0 24px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.trust { list-style: none; display: flex; gap: 8px 20px; flex-wrap: wrap; padding: 0; margin: 22px 0 0; color: var(--dim); font-size: 13px; font-weight: 600; }
.trust li::before { content: "✓ "; color: #34d399; }
.hero-art img { width: 100%; height: auto; border-radius: var(--r); border: 1px solid var(--stroke); box-shadow: 0 30px 70px rgba(0, 0, 0, .5); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; margin-top: 44px; }
.stats div { background: var(--card); border: 1px solid var(--stroke); border-radius: var(--r); padding: 16px; text-align: center; }
.stats b { display: block; font-family: var(--disp); font-size: 30px; }
.stats span { color: var(--dim); font-size: 12.5px; }

/* features */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--stroke); border-radius: var(--r); padding: 22px; box-shadow: inset 0 1px 0 rgba(255, 255, 255, .15); }
.card h3 { margin: 0 0 8px; font-family: var(--disp); font-size: 18px; }
.card p { margin: 0; color: var(--dim); font-size: 14px; }

/* gallery */
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.gallery figure { margin: 0; background: var(--card); border: 1px solid var(--stroke); border-radius: var(--r); padding: 10px; }
.gallery img { width: 100%; height: auto; display: block; border-radius: 12px; }
.gallery figcaption { padding: 8px 4px 2px; color: var(--dim); font-size: 13px; font-weight: 600; }

/* lightbox */
.lightbox { position: fixed; inset: 0; z-index: 150; background: rgba(4, 7, 18, .88); display: grid; place-items: center; padding: 24px; }
.lightbox.hidden { display: none; }
.lightbox img { max-width: min(1100px, 94vw); max-height: 86vh; border-radius: 14px; border: 1px solid var(--stroke); }
.lightbox button { position: fixed; top: 18px; right: 22px; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--stroke); background: rgba(255, 255, 255, .14); color: #fff; font-size: 18px; cursor: pointer; }

/* install */
.steps { display: grid; gap: 12px; margin-bottom: 26px; }
.step { display: flex; gap: 16px; background: var(--card); border: 1px solid var(--stroke); border-radius: var(--r); padding: 18px 20px; align-items: flex-start; }
.step > b { flex-shrink: 0; width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: linear-gradient(135deg, var(--a1), var(--a2)); font-family: var(--disp); }
.step h3 { margin: 0 0 4px; font-size: 16px; }
.step p { margin: 0; color: var(--dim); font-size: 14px; }
code, kbd { font-family: ui-monospace, Menlo, Consolas, monospace; background: rgba(255, 255, 255, .12); border: 1px solid var(--stroke); border-radius: 6px; padding: 1px 7px; font-size: 12.5px; }
.perm-head { margin: 6px 0 8px; font-size: 16px; }
.perm-list { margin: 0; padding-left: 20px; color: var(--dim); font-size: 14px; display: grid; gap: 6px; }
.perm-list b { color: var(--text); }

/* faq */
details { background: var(--card); border: 1px solid var(--stroke); border-radius: 14px; padding: 14px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; font-size: 15px; }
details p { color: var(--dim); font-size: 14px; margin: 8px 0 2px; }

/* privacy */
.policy { background: var(--card); border: 1px solid var(--stroke); border-radius: var(--r); padding: 8px 26px 20px; }
.policy h3 { font-family: var(--disp); margin: 22px 0 6px; font-size: 17px; }
.policy p, .policy li { color: var(--dim); font-size: 14px; }
.policy ul { padding-left: 20px; display: grid; gap: 6px; }

/* support */
.support-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; align-items: start; }
.support-card { text-decoration: none; color: inherit; display: block; }
.support-card p { word-break: break-all; }
.support-card .btn { margin-top: 12px; }
#supportForm label { display: block; font-size: 13px; font-weight: 600; color: var(--dim); margin-bottom: 10px; }
#supportForm input, #supportForm select, #supportForm textarea {
  display: block; width: 100%; margin-top: 5px; padding: 10px 12px;
  border-radius: 12px; border: 1px solid var(--stroke);
  background: rgba(255, 255, 255, .08); color: var(--text);
  font-family: inherit; font-size: 14px;
}
#supportForm textarea { resize: vertical; min-height: 90px; }
#supportForm .hint { font-size: 12px; color: var(--faint); margin: 10px 0 0; }
#supportForm .btn { border: 0; margin-top: 4px; }

footer { border-top: 1px solid var(--stroke); margin-top: 60px; padding: 26px 24px 40px; text-align: center; color: var(--dim); font-size: 13px; }
footer img { border-radius: 6px; vertical-align: -6px; margin-right: 6px; }
footer p { margin: 6px 0; }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; }
  .grid { grid-template-columns: 1fr; }
  .support-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .nav nav { display: none; }
  .nav .btn { margin-left: auto; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}