/* ==========================================================================
   PONSLAB site — abyssal terminal design system (Auros reference)
   Shared by index.html, how-it-works.html, whitepaper.html
   ========================================================================== */

:root {
  --liquid-deep: #011d1c;
  --liquid-abyss: #012624;
  --liquid-kelp: #003734;
  --kelp-ghost: rgba(3, 81, 75, 0.5);
  --platinum: #ffffff;
  --liquid-mist: #edfffe;
  --silver-mist: #bbc7c6;
  --slate-deep: #707777;
  --lavender-phosphor: #fde9ff;
  --phosphor-pink: #fad1ff;
  --phosphor-aqua: #cbfffc;
  --phosphor-teal: #00827c;
  --gradient-bio: linear-gradient(90deg, #00827c 0%, #cbfffc 100%);
  --gradient-aurora: linear-gradient(90deg, #cbfffc 0%, #edfffe 26%, #fffdfa 48%, #fad1ff 89%);
  --radius-card: 16px;
  --radius-small: 6px;
  --font-ui: "Inter", "DM Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--liquid-abyss);
  color: var(--silver-mist);
  font-family: var(--font-ui);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: rgba(203, 255, 252, 0.25); color: var(--platinum); }

a { color: var(--phosphor-aqua); text-decoration: none; }
a:hover { color: var(--platinum); }

/* ------- ambient orbs ------- */
.atmosphere { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: 0.35; animation: drift 26s ease-in-out infinite alternate; }
.orb.teal { width: 560px; height: 560px; background: radial-gradient(circle, rgba(0,130,124,0.55), transparent 70%); top: -160px; right: -100px; }
.orb.pink { width: 440px; height: 440px; background: radial-gradient(circle, rgba(250,209,255,0.26), transparent 70%); bottom: -120px; left: 30%; animation-delay: -13s; }
.orb.aqua { width: 360px; height: 360px; background: radial-gradient(circle, rgba(203,255,252,0.2), transparent 70%); top: 40%; left: -140px; animation-delay: -6s; }
@keyframes drift { from { transform: translate3d(0,0,0) scale(1); } to { transform: translate3d(42px,30px,0) scale(1.08); } }

.container { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* ------- type ------- */
h1, h2, h3 { color: var(--platinum); font-weight: 500; }
.eyebrow {
  font-size: 11px; font-weight: 500; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--silver-mist);
}
.gradient-text {
  background: var(--gradient-aurora);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.mono { font-family: var(--font-mono); font-size: 12.5px; }
.muted { color: var(--slate-deep); }

/* ------- topbar ------- */
.topbar {
  display: flex; align-items: center; gap: 26px;
  padding: 22px 0;
}
.wordmark { display: flex; align-items: center; gap: 12px; color: var(--platinum); }
.wordmark .name { font-size: 16px; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; }
.wordmark svg { filter: drop-shadow(0 0 6px rgba(250, 209, 255, 0.35)); }
.topbar nav { display: flex; gap: 22px; margin-left: auto; align-items: center; }
.topbar nav a {
  font-size: 12px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--silver-mist);
}
.topbar nav a:hover { color: var(--platinum); }

.btn-aurora {
  display: inline-block;
  background: var(--gradient-aurora); color: #06211f;
  font-size: 13px; font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  border: none; border-radius: var(--radius-small); padding: 13px 24px; cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}
.btn-aurora:hover { filter: brightness(1.06) saturate(1.15); transform: translateY(-1px); color: #06211f; }
.btn-ghost {
  display: inline-block;
  background: var(--kelp-ghost); color: var(--liquid-mist);
  font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  border: none; border-radius: var(--radius-small); padding: 13px 24px; cursor: pointer;
  transition: background 0.15s ease;
}
.btn-ghost:hover { background: rgba(3, 81, 75, 0.85); color: var(--liquid-mist); }

/* ------- hero ------- */
.hero {
  display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: 48px; align-items: center; padding: 84px 0 96px;
}
.hero h1 {
  font-size: clamp(52px, 7vw, 92px); line-height: 1.02; letter-spacing: -0.045em; margin: 18px 0 22px;
}
.hero .sub { max-width: 520px; font-size: 17px; line-height: 1.6; }
.hero .ctas { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }
.hero-art { display: flex; justify-content: center; }
.hero-art svg { width: min(360px, 80%); height: auto; }
.hero-art .satellite { animation: pulse-orb 3.2s ease-in-out infinite; transform-origin: center; }
@keyframes pulse-orb { 0%,100% { opacity: 0.85; } 50% { opacity: 1; } }

/* ------- sections ------- */
section { padding: 72px 0; }
.section-head { margin-bottom: 36px; }
.section-head h2 { font-size: 34px; letter-spacing: -0.02em; margin-top: 10px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card {
  background: var(--liquid-kelp); border-radius: var(--radius-card); padding: 32px;
}
.card.recessed { background: var(--liquid-deep); }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { font-size: 14.5px; line-height: 1.6; }
.card .k { display: block; margin-bottom: 12px; }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; }
.step { background: var(--liquid-deep); border-radius: var(--radius-card); padding: 26px; }
.step .num {
  font-family: var(--font-mono); font-size: 12px; color: var(--phosphor-aqua);
  display: inline-block; margin-bottom: 14px;
  border: 1px solid rgba(203,255,252,0.25); border-radius: 999px; padding: 3px 10px;
}
.step h3 { font-size: 16px; margin-bottom: 8px; }
.step p { font-size: 13.5px; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; }
.stat-tile { background: var(--liquid-deep); border-radius: var(--radius-card); padding: 28px; }
.stat-tile .big {
  font-size: 34px; font-weight: 500; letter-spacing: -0.02em; line-height: 1;
  color: var(--lavender-phosphor); font-variant-numeric: tabular-nums; margin-bottom: 8px;
}
.stat-tile .lbl { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--silver-mist); }
.stat-tile .note { font-size: 12.5px; color: var(--slate-deep); margin-top: 8px; }

.band {
  background: var(--liquid-deep); border-radius: var(--radius-card); padding: 44px;
  display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 28px; align-items: center;
}
.band h2 { font-size: 26px; margin-top: 8px; }
.band p { max-width: 640px; font-size: 14.5px; margin-top: 10px; }
@media (max-width: 760px) { .band { grid-template-columns: 1fr; } }

/* ------- prose (docs & whitepaper) ------- */
.prose { max-width: 760px; padding: 48px 0 96px; }
.prose h1 { font-size: 42px; letter-spacing: -0.03em; margin: 16px 0 8px; }
.prose .lede { font-size: 17px; color: var(--silver-mist); margin: 14px 0 8px; }
.prose h2 { font-size: 26px; letter-spacing: -0.01em; margin: 52px 0 14px; }
.prose h3 { font-size: 18px; margin: 32px 0 10px; color: var(--liquid-mist); }
.prose p { margin: 12px 0; font-size: 15px; }
.prose ul, .prose ol { margin: 12px 0 12px 22px; font-size: 15px; }
.prose li { margin: 6px 0; }
.prose strong { color: var(--liquid-mist); font-weight: 500; }
.prose code {
  font-family: var(--font-mono); font-size: 13px; color: var(--phosphor-aqua);
  background: var(--liquid-deep); border-radius: 4px; padding: 1px 6px;
}
.prose table {
  width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px;
  background: var(--liquid-deep); border-radius: var(--radius-card); overflow: hidden;
}
.prose th, .prose td { text-align: left; padding: 12px 16px; border-bottom: 1px solid rgba(187,199,198,0.08); }
.prose th { font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--slate-deep); }
.prose tr:last-child td { border-bottom: none; }
.prose .warnbox {
  border-radius: var(--radius-small); background: rgba(255, 179, 173, 0.08); color: #ffb3ad;
  font-size: 14px; padding: 14px 16px; margin: 16px 0;
}
.prose hr { border: none; border-top: 1px solid rgba(187,199,198,0.12); margin: 40px 0; }

.faq details {
  background: var(--liquid-deep); border-radius: var(--radius-small);
  padding: 16px 18px; margin: 10px 0;
}
.faq summary { cursor: pointer; color: var(--liquid-mist); font-size: 15px; }
.faq details p { margin-top: 10px; }

/* ------- footer ------- */
footer { padding: 48px 0 40px; border-top: 1px solid rgba(187,199,198,0.08); margin-top: 48px; }
.foot { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.foot .links { display: flex; gap: 18px; margin-left: auto; flex-wrap: wrap; }
.foot .links a { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--slate-deep); }
.foot .links a:hover { color: var(--silver-mist); }
.smallprint { margin-top: 18px; font-size: 12px; color: var(--slate-deep); }

@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 56px 0 64px; }
  .hero-art { order: -1; }
  .hero-art svg { width: 220px; }
  .topbar nav { gap: 14px; }
  .topbar nav a.hide-sm { display: none; }
}