/* ==========================================================================
   DexterOS — public landing page
   ========================================================================== */

body.landing { background: var(--bg); }

.landing-shell {
  --brand-1: #2563eb;
  --brand-2: #7c3aed;
  --brand-3: #06b6d4;
  position: relative;
  overflow-x: clip;
}
.landing-shell::before {
  content: "";
  position: fixed; inset: -20% -10% auto -10%; height: 720px; z-index: 0; pointer-events: none;
  background:
    radial-gradient(680px 420px at 12% 6%, color-mix(in srgb, var(--brand-1) 34%, transparent), transparent 62%),
    radial-gradient(620px 420px at 82% 0%, color-mix(in srgb, var(--brand-2) 30%, transparent), transparent 60%),
    radial-gradient(520px 380px at 55% 26%, color-mix(in srgb, var(--brand-3) 22%, transparent), transparent 65%);
  filter: blur(6px);
}
.landing-shell > * { position: relative; z-index: 1; }

/* ------------------------------------------------------------------ nav */
.nav {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: blur(22px) saturate(150%); -webkit-backdrop-filter: blur(22px) saturate(150%);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--stroke);
}
.nav-inner { display: flex; align-items: center; gap: 14px; height: 62px; }
.nav-links { display: flex; gap: 4px; margin-left: 18px; }
.nav-links a { color: var(--text-secondary); font-size: 14px; padding: 7px 12px; border-radius: var(--radius); }
.nav-links a:hover { background: color-mix(in srgb, var(--text) 7%, transparent); text-decoration: none; color: var(--text); }
.nav-actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.nav-burger { display: none; }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-burger { display: inline-flex; }
}

/* ------------------------------------------------------------------ hero */
.hero { padding: 74px 0 40px; }
.hero-grid { display: grid; grid-template-columns: 1.02fr .98fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; margin-bottom: 18px;
  border-radius: 999px; border: 1px solid var(--stroke-strong); background: var(--layer);
  font-size: 12.5px; font-weight: 600; color: var(--text-secondary);
}
.eyebrow .dot { width: 7px; height: 7px; border-radius: 50%; background: #22c55e; box-shadow: 0 0 0 4px rgba(34, 197, 94, .18); }
.hero h1 { font-size: clamp(34px, 5vw, 58px); line-height: 1.04; letter-spacing: -0.03em; margin-bottom: 18px; }
.hero h1 .grad {
  background: linear-gradient(100deg, var(--brand-1), var(--brand-2) 55%, var(--brand-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { font-size: clamp(15px, 1.6vw, 18px); color: var(--text-secondary); max-width: 60ch; margin-bottom: 26px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; font-size: 13px; color: var(--text-tertiary); }
.hero-trust span { display: inline-flex; align-items: center; gap: 7px; }

/* fake desktop preview */
.preview {
  border-radius: var(--radius-xl); border: 1px solid var(--stroke-strong);
  box-shadow: var(--flyout-shadow); overflow: hidden; background: #0b1226;
  aspect-ratio: 16 / 10.4; position: relative;
}
.preview-screen {
  position: absolute; inset: 0; padding: 20px;
  background:
    radial-gradient(700px 420px at 20% 10%, #1e3a8a 0%, transparent 58%),
    linear-gradient(160deg, #070b16, #0b1226 55%, #05070f);
  display: flex; flex-direction: column;
}
.preview-topbar { display: flex; gap: 6px; margin-bottom: 16px; }
.preview-topbar i { width: 9px; height: 9px; border-radius: 50%; background: rgba(255, 255, 255, .22); display: block; }
.preview-icons { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.preview-icon { text-align: center; color: #fff; }
.preview-icon .tile {
  width: 46px; height: 46px; margin: 0 auto 6px; border-radius: 12px; display: grid; place-items: center;
  font-size: 22px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .16);
  backdrop-filter: blur(6px);
}
.preview-icon span { font-size: 10.5px; opacity: .85; }
.preview-window {
  position: absolute; right: 16px; bottom: 58px; width: 62%; height: 47%;
  border-radius: 10px; background: rgba(30, 33, 43, .84); border: 1px solid rgba(255, 255, 255, .18);
  box-shadow: 0 24px 50px rgba(0, 0, 0, .5); backdrop-filter: blur(18px); overflow: hidden;
}
.preview-window .bar { display: flex; align-items: center; gap: 8px; padding: 7px 10px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.preview-window .bar i { width: 8px; height: 8px; border-radius: 50%; background: rgba(255, 255, 255, .3); }
.preview-window .bar .t { flex: 1; font-size: 10px; color: rgba(255, 255, 255, .75); text-align: center; }
.preview-window .body { padding: 12px; display: grid; gap: 8px; }
.preview-window .body i { display: block; height: 9px; border-radius: 5px; background: rgba(255, 255, 255, .16); }
.preview-window .body i:nth-child(2) { width: 76%; }
.preview-window .body i:nth-child(4) { width: 58%; }
.preview-taskbar {
  position: absolute; left: 50%; transform: translateX(-50%); bottom: 12px;
  display: flex; gap: 8px; align-items: center; padding: 7px 12px; border-radius: 14px;
  background: rgba(24, 26, 34, .78); border: 1px solid rgba(255, 255, 255, .14); backdrop-filter: blur(20px);
}
.preview-taskbar i { width: 20px; height: 20px; border-radius: 6px; background: rgba(255, 255, 255, .2); display: block; }
.preview-taskbar i.on { background: linear-gradient(145deg, var(--brand-1), var(--brand-2)); box-shadow: 0 0 0 2px rgba(255, 255, 255, .18); }
.preview-clock { position: absolute; right: 18px; bottom: 18px; color: #fff; font-size: 11px; opacity: .8; text-align: right; }
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero { padding-top: 46px; }
}

/* ------------------------------------------------------------------ sections */
.section { padding: 66px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 40px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); letter-spacing: -0.025em; }
.section-head p { color: var(--text-secondary); font-size: 16px; margin: 0; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  padding: 24px; background: var(--bg-elevated); border: 1px solid var(--stroke);
  border-radius: var(--radius-lg); box-shadow: var(--card-shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.feature:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 40%, var(--stroke)); }
.feature .ico {
  width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; font-size: 21px; margin-bottom: 14px;
  background: color-mix(in srgb, var(--accent) 14%, transparent); border: 1px solid var(--accent-soft);
}
.feature h3 { font-size: 16.5px; margin-bottom: 6px; }
.feature p { color: var(--text-secondary); font-size: 14px; margin: 0; }
@media (max-width: 1000px) { .feature-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .feature-grid { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 42px; align-items: center; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.check-list li { display: flex; gap: 11px; align-items: flex-start; color: var(--text-secondary); }
.check-list .tick {
  flex: 0 0 auto; width: 21px; height: 21px; border-radius: 50%; display: grid; place-items: center;
  background: color-mix(in srgb, #22c55e 18%, transparent); color: #16a34a; font-size: 12px; font-weight: 800; margin-top: 1px;
}
@media (max-width: 980px) { .split { grid-template-columns: 1fr; gap: 26px; } }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: s; }
.step { padding: 24px; border-radius: var(--radius-lg); border: 1px solid var(--stroke); background: var(--layer); backdrop-filter: blur(16px); }
.step .num {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; margin-bottom: 14px;
  background: var(--accent); color: #fff; font-weight: 700; font-size: 14px;
}
@media (max-width: 860px) { .steps { grid-template-columns: 1fr; } }

.pricing { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; align-items: stretch; }
.plan { padding: 26px; border-radius: var(--radius-lg); border: 1px solid var(--stroke); background: var(--bg-elevated); box-shadow: var(--card-shadow); display: flex; flex-direction: column; }
.plan.featured { border-color: color-mix(in srgb, var(--accent) 55%, transparent); box-shadow: 0 20px 50px color-mix(in srgb, var(--accent) 18%, transparent); position: relative; }
.plan.featured::after {
  content: "Most popular"; position: absolute; top: -12px; left: 26px; padding: 3px 11px; border-radius: 999px;
  background: var(--accent); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: .02em;
}
.plan .price { font-size: 34px; font-weight: 700; letter-spacing: -0.02em; margin: 10px 0 2px; }
.plan .price small { font-size: 13px; font-weight: 500; color: var(--text-tertiary); }
.plan ul { list-style: none; padding: 0; margin: 18px 0 22px; display: grid; gap: 9px; font-size: 14px; color: var(--text-secondary); }
.plan ul li::before { content: "✓  "; color: var(--accent); font-weight: 700; }
.plan .btn { margin-top: auto; }
@media (max-width: 1000px) { .pricing { grid-template-columns: 1fr; } }

.cta-band {
  border-radius: var(--radius-xl); padding: 46px 34px; text-align: center; color: #fff;
  background: linear-gradient(120deg, var(--brand-1), var(--brand-2) 60%, var(--brand-3));
  box-shadow: 0 26px 60px color-mix(in srgb, var(--brand-2) 34%, transparent);
}
.cta-band h2 { color: #fff; font-size: clamp(24px, 3.2vw, 34px); }
.cta-band p { color: rgba(255, 255, 255, .88); max-width: 60ch; margin: 0 auto 24px; }
.cta-band .btn { background: #fff; color: #111; border-color: rgba(255, 255, 255, .6); }
.cta-band .btn.ghost { background: rgba(255, 255, 255, .12); color: #fff; border-color: rgba(255, 255, 255, .5); }

footer.site {
  border-top: 1px solid var(--stroke); padding: 34px 0 44px; color: var(--text-tertiary); font-size: 13px;
}
.footer-grid { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; }
.footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
.footer-links a { color: var(--text-secondary); }

/* ------------------------------------------------------------------ auth modal */
.auth-tabs { display: flex; gap: 6px; padding: 4px; background: color-mix(in srgb, var(--text) 7%, transparent); border-radius: 10px; margin-bottom: 18px; }
.auth-tabs button {
  flex: 1; padding: 8px; border: 0; border-radius: 7px; background: transparent; cursor: pointer;
  font-weight: 600; font-size: 13.5px; color: var(--text-secondary);
}
.auth-tabs button.active { background: var(--bg-elevated); color: var(--text); box-shadow: 0 1px 3px rgba(0, 0, 0, .12); }
.workspace-choice { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.workspace-choice label {
  border: 1px solid var(--stroke-strong); border-radius: var(--radius); padding: 11px 12px; cursor: pointer;
  font-size: 13px; display: flex; gap: 9px; align-items: flex-start; background: color-mix(in srgb, var(--text) 3%, transparent);
}
.workspace-choice label:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.workspace-choice b { display: block; font-size: 13.5px; }
.workspace-choice small { color: var(--text-tertiary); }
.workspace-preview { display: flex; align-items: center; gap: 9px; font-size: 13px; }

/* Very narrow phones: the brand tagline would wrap; the mark alone reads better. */
@media (max-width: 560px) {
  .brand small { display: none; }
}