/* ============ Vesper — commercial site ============ */
:root {
  --bg: #04070d;
  --bg2: #0a1220;
  --ink: #e8f1f5;
  --ink-dim: #9fb3bd;
  --cyan: #35e0d2;
  --violet: #8b7cf6;
  --gold: #f5b942;
  --line: rgba(140, 220, 230, 0.14);
  --card: rgba(13, 24, 38, 0.66);
  --font-head: "Sora", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* background glows */
.bg-glow { position: fixed; border-radius: 50%; filter: blur(120px); pointer-events: none; z-index: -1; }
.bg-glow-a { width: 60vw; height: 60vw; top: -25vw; left: -15vw; background: radial-gradient(circle, rgba(53,224,210,.07), transparent 65%); }
.bg-glow-b { width: 55vw; height: 55vw; bottom: -25vw; right: -15vw; background: radial-gradient(circle, rgba(139,124,246,.07), transparent 65%); }

/* ---------- nav ---------- */
#nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px clamp(16px, 4vw, 48px);
  background: rgba(4, 7, 13, 0.72);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.nav-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-head); font-weight: 800; letter-spacing: .22em; font-size: 15px; }
.nav-orb {
  width: 16px; height: 16px; border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #d9fffb, var(--cyan) 55%, #0a7c74);
  box-shadow: 0 0 12px rgba(53,224,210,.8), 0 0 30px rgba(53,224,210,.35);
  animation: navpulse 3.5s ease-in-out infinite;
}
@keyframes navpulse { 50% { box-shadow: 0 0 18px rgba(53,224,210,.95), 0 0 44px rgba(53,224,210,.5); } }
.nav-links { display: flex; gap: clamp(10px, 2vw, 28px); }
.nav-links a { color: var(--ink-dim); font-size: 14px; transition: color .2s; }
.nav-links a:hover { color: var(--cyan); }
@media (max-width: 860px) { .nav-links { display: none; } }

/* ---------- buttons ---------- */
.btn {
  display: inline-block; padding: 13px 26px; border-radius: 999px;
  font-family: var(--font-head); font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .18s, box-shadow .18s, background .18s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, #2bd4c8, #1aa8c9);
  color: #02131a; box-shadow: 0 0 24px rgba(53,224,210,.35);
}
.btn-primary:hover { box-shadow: 0 0 40px rgba(53,224,210,.55); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: rgba(255,255,255,.03); }
.btn-ghost:hover { border-color: var(--cyan); }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.btn-lg { padding: 17px 38px; font-size: 17px; }
.btn-block { display: block; text-align: center; }

/* ---------- hero ---------- */
.hero { max-width: 1240px; margin: 0 auto; padding: 150px 24px 60px; }
.hero-copy { max-width: 760px; }
.eyebrow {
  font-family: var(--font-head); font-size: 12px; letter-spacing: .3em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 18px;
}
h1 {
  font-family: var(--font-head); font-weight: 800;
  font-size: clamp(40px, 6.4vw, 76px); line-height: 1.05; letter-spacing: -0.02em;
}
.grad {
  background: linear-gradient(100deg, #7ff5ea, var(--cyan) 40%, var(--violet) 80%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { margin: 22px 0 30px; font-size: clamp(16px, 1.6vw, 19px); color: var(--ink-dim); max-width: 640px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: clamp(24px, 5vw, 64px); margin-top: 44px; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats b { font-family: var(--font-head); font-size: clamp(22px, 2.6vw, 32px); color: var(--cyan); }
.hero-stats span { font-size: 13px; color: var(--ink-dim); }

/* hero app replica */
.hero-app {
  margin-top: 64px; display: flex; min-height: 480px; height: min(62vh, 620px);
  border: 1px solid var(--line); border-radius: 18px; overflow: hidden;
  background: #04070d;
  box-shadow: 0 30px 90px rgba(0,0,0,.6), 0 0 60px rgba(53,224,210,.06);
}
.app-stage { position: relative; flex: 1 1 auto; min-width: 0; }
#hero-scene { position: absolute; inset: 0; width: 100%; height: 100%; }
.status-pill {
  position: absolute; left: 50%; bottom: 22px; transform: translateX(-50%);
  display: flex; align-items: center; gap: 9px; white-space: nowrap;
  padding: 9px 18px; border-radius: 999px; font-size: 13.5px; color: var(--ink-dim);
  background: rgba(8, 16, 26, .78); border: 1px solid var(--line); backdrop-filter: blur(6px);
}
.status-pill .dot, .status-pill span:first-child { width: 9px; height: 9px; border-radius: 50%; }
.dot-idle   { background: #7fd8d0; box-shadow: 0 0 8px #7fd8d0; }
.dot-listen { background: #4ade80; box-shadow: 0 0 8px #4ade80; animation: blink 1s infinite; }
.dot-think  { background: #a78bfa; box-shadow: 0 0 8px #a78bfa; animation: blink .7s infinite; }
.dot-speak  { background: var(--gold); box-shadow: 0 0 8px var(--gold); animation: blink .5s infinite; }
.dot-dance  { background: linear-gradient(90deg,#f472b6,#facc15,#4ade80,#60a5fa); animation: spin 1.2s linear infinite; }
@keyframes blink { 50% { opacity: .35; } }
@keyframes spin { to { filter: hue-rotate(360deg); } }

.app-panel {
  flex: 0 0 clamp(300px, 34%, 430px); display: flex; flex-direction: column;
  background: rgba(9, 17, 28, .92); border-left: 1px solid var(--line);
}
.app-head { padding: 16px 18px 12px; border-bottom: 1px solid var(--line); }
.app-brand { display: flex; align-items: center; gap: 9px; font-family: var(--font-head); font-weight: 700; letter-spacing: .22em; font-size: 14px; }
.app-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 12px; }
.chip {
  font-size: 11.5px; padding: 4px 12px; border-radius: 999px; color: var(--ink-dim);
  border: 1px solid var(--line); background: rgba(255,255,255,.02);
}
.chip.on { color: var(--cyan); border-color: rgba(53,224,210,.5); box-shadow: 0 0 10px rgba(53,224,210,.15) inset; }
.app-log { flex: 1; overflow: hidden; padding: 16px 18px; display: flex; flex-direction: column; gap: 12px; }
.amsg { font-size: 13.5px; max-width: 92%; padding: 9px 13px; border-radius: 12px; animation: msgin .35s ease both; }
@keyframes msgin { from { opacity: 0; transform: translateY(8px); } }
.amsg.note { color: var(--ink-dim); font-style: italic; background: none; padding-left: 0; }
.amsg.user { align-self: flex-end; background: rgba(99,102,241,.16); border: 1px solid rgba(129,140,248,.35); border-bottom-right-radius: 4px; }
.amsg.vesper { align-self: flex-start; background: rgba(53,224,210,.08); border: 1px solid rgba(53,224,210,.3); border-bottom-left-radius: 4px; }
.app-composer { display: flex; align-items: center; gap: 8px; padding: 14px 16px; border-top: 1px solid var(--line); }
.app-input { flex: 1; font-size: 13px; color: #5b7280; border: 1px solid var(--line); border-radius: 10px; padding: 9px 12px; }
.app-send { color: var(--cyan); font-size: 15px; }
@media (max-width: 760px) {
  .hero-app { flex-direction: column; height: auto; }
  .app-stage { height: 340px; }
  .app-panel { flex: none; }
  .app-log { max-height: 220px; }
}

/* ---------- sections ---------- */
.section { max-width: 1240px; margin: 0 auto; padding: 90px 24px; }
.section-head { max-width: 680px; margin-bottom: 54px; }
h2 { font-family: var(--font-head); font-weight: 700; font-size: clamp(28px, 3.6vw, 44px); line-height: 1.15; letter-spacing: -0.01em; margin-bottom: 16px; }
.section-head p { color: var(--ink-dim); font-size: 16.5px; }

/* ---------- orb language strip ---------- */
.orb-lang { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: linear-gradient(180deg, rgba(10,18,32,.5), rgba(4,7,13,.5)); }
.orb-lang-inner { max-width: 1240px; margin: 0 auto; padding: 64px 24px; }
.orb-lang h2 { text-align: center; }
.orb-lang p { text-align: center; color: var(--ink-dim); margin-bottom: 40px; }
.orb-states { list-style: none; display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px 32px; max-width: 980px; margin: 0 auto; }
.orb-states li { display: flex; align-items: center; gap: 12px; color: var(--ink-dim); font-size: 14.5px; }
.orb-states b { color: var(--ink); font-family: var(--font-head); font-weight: 600; }
.orb-states .dot { flex: none; width: 14px; height: 14px; border-radius: 50%; background: var(--c); box-shadow: 0 0 12px var(--c); }
.orb-states .dot.rainbow { background: conic-gradient(#f472b6, #facc15, #4ade80, #60a5fa, #a78bfa, #f472b6); box-shadow: 0 0 12px rgba(255,255,255,.4); }

/* ---------- feature grid ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 22px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 16px;
  padding: 28px 26px; transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(53,224,210,.4); box-shadow: 0 18px 50px rgba(0,0,0,.45), 0 0 30px rgba(53,224,210,.07); }
.card-ico { font-size: 26px; margin-bottom: 14px; filter: drop-shadow(0 0 12px rgba(53,224,210,.4)); }
.card h3 { font-family: var(--font-head); font-size: 18px; font-weight: 600; margin-bottom: 10px; }
.card p { color: var(--ink-dim); font-size: 14.5px; }
.card em { color: var(--cyan); font-style: normal; }

/* ---------- gallery ---------- */
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(460px, 1fr)); gap: 34px; }
@media (max-width: 560px) { .gallery { grid-template-columns: 1fr; } }
.shot figcaption { margin-top: 16px; color: var(--ink-dim); font-size: 14.5px; }
.shot figcaption b { color: var(--ink); font-family: var(--font-head); display: block; margin-bottom: 4px; }
.shot-frame {
  border: 1px solid var(--line); border-radius: 14px; overflow: hidden; background: #060b14;
  box-shadow: 0 20px 60px rgba(0,0,0,.5);
  transition: transform .25s, box-shadow .25s;
}
.shot-frame:hover { transform: translateY(-4px); box-shadow: 0 26px 70px rgba(0,0,0,.6), 0 0 40px rgba(53,224,210,.08); }
.shot-bar { display: flex; align-items: center; gap: 7px; padding: 10px 14px; border-bottom: 1px solid var(--line); background: rgba(10,18,30,.8); }
.shot-bar i { width: 10px; height: 10px; border-radius: 50%; background: #22384c; }
.shot-bar i:nth-child(1) { background: #f87171aa; } .shot-bar i:nth-child(2) { background: #fbbf24aa; } .shot-bar i:nth-child(3) { background: #34d399aa; }
.shot-bar span { margin-left: 10px; font-size: 12px; color: var(--ink-dim); font-family: var(--font-head); letter-spacing: .08em; }

/* ---------- privacy ---------- */
.privacy { border-top: 1px solid var(--line); }
.privacy-inner { display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: center; }
@media (max-width: 900px) { .privacy-inner { grid-template-columns: 1fr; } }
.checklist { list-style: none; margin-top: 24px; display: flex; flex-direction: column; gap: 13px; }
.checklist li { color: var(--ink-dim); font-size: 15px; padding-left: 30px; position: relative; }
.checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 700; }
.checklist b { color: var(--ink); }
.privacy-visual { text-align: center; padding: 46px 26px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.mini-orb {
  width: 110px; height: 110px; margin: 0 auto 34px; border-radius: 50%;
  background: radial-gradient(circle at 42% 40%, #eafffc, var(--cyan) 52%, rgba(53,224,210,0) 72%);
  box-shadow: 0 0 50px rgba(53,224,210,.5), 0 0 120px rgba(53,224,210,.25);
  animation: navpulse 3.5s ease-in-out infinite;
}
.flow { display: flex; align-items: center; justify-content: center; gap: 10px; flex-wrap: wrap; }
.flow-node { padding: 10px 16px; border-radius: 12px; border: 1px solid var(--line); background: rgba(255,255,255,.03); font-size: 13.5px; }
.flow-arrow { color: var(--cyan); }
.flow-note { margin-top: 20px; color: var(--cyan); font-family: var(--font-head); font-size: 14px; letter-spacing: .06em; }

/* ---------- skills ---------- */
.skills-demo {
  max-width: 640px; margin: 0 auto 46px; display: flex; flex-direction: column; gap: 14px;
  padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--card);
}
.chat-bubble { max-width: 85%; padding: 12px 16px; border-radius: 14px; font-size: 14.5px; }
.chat-bubble.user { align-self: flex-end; background: rgba(99,102,241,.16); border: 1px solid rgba(129,140,248,.35); border-bottom-right-radius: 4px; }
.chat-bubble.vesper { align-self: flex-start; background: rgba(53,224,210,.08); border: 1px solid rgba(53,224,210,.3); border-bottom-left-radius: 4px; }
.chat-bubble b { color: var(--cyan); }
.skills-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 18px; }
.skill-chip { border: 1px solid var(--line); border-radius: 14px; padding: 20px; background: var(--card); font-size: 14px; color: var(--ink-dim); }
.skill-chip b { display: block; font-family: var(--font-head); color: var(--ink); margin-bottom: 4px; font-size: 15.5px; }

/* ---------- download ---------- */
.dl-card {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 0;
  border: 1px solid rgba(53,224,210,.35); border-radius: 20px; overflow: hidden;
  background: var(--card); box-shadow: 0 0 60px rgba(53,224,210,.08), 0 30px 80px rgba(0,0,0,.5);
}
@media (max-width: 820px) { .dl-card { grid-template-columns: 1fr; } }
.dl-main { text-align: center; padding: 52px 40px; }
.dl-orb {
  width: 92px; height: 92px; margin: 0 auto 26px; border-radius: 50%;
  background: radial-gradient(circle at 42% 40%, #eafffc, var(--cyan) 52%, rgba(53,224,210,0) 74%);
  box-shadow: 0 0 44px rgba(53,224,210,.55), 0 0 110px rgba(53,224,210,.25);
  animation: navpulse 3.5s ease-in-out infinite;
}
.dl-main h3 { font-family: var(--font-head); font-size: 26px; margin-bottom: 8px; }
.dl-meta { color: var(--ink-dim); font-size: 14px; margin-bottom: 26px; }
.dl-note { color: #5b7280; font-size: 12.5px; margin-top: 18px; }
.dl-early {
  padding: 52px 44px; border-left: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(245,185,66,.06), rgba(13,24,38,.4));
  display: flex; flex-direction: column; justify-content: center;
}
@media (max-width: 820px) { .dl-early { border-left: none; border-top: 1px solid var(--line); } }
.dl-early-ico { font-size: 30px; margin-bottom: 14px; filter: drop-shadow(0 0 14px rgba(245,185,66,.5)); }
.dl-early h4 { font-family: var(--font-head); font-size: 19px; margin-bottom: 12px; color: var(--gold); }
.dl-early p { color: var(--ink-dim); font-size: 14.5px; }

/* ---------- pricing / coming soon ---------- */
.coming-soon {
  max-width: 720px; margin: 0 auto; text-align: center;
  border: 1px solid rgba(53,224,210,.4); border-radius: 20px; padding: 56px 40px;
  background: linear-gradient(180deg, rgba(53,224,210,.07), rgba(13,24,38,.66));
  box-shadow: 0 0 60px rgba(53,224,210,.1);
  position: relative;
}
.cs-badge {
  position: absolute; top: -15px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, #2bd4c8, #1aa8c9); color: #02131a;
  font-family: var(--font-head); font-weight: 700; font-size: 13px;
  letter-spacing: .12em; text-transform: uppercase; padding: 6px 22px; border-radius: 999px;
  box-shadow: 0 0 24px rgba(53,224,210,.45);
}
.coming-soon h3 { font-family: var(--font-head); font-size: clamp(20px, 2.6vw, 28px); margin-bottom: 14px; }
.coming-soon p { color: var(--ink-dim); font-size: 15.5px; max-width: 520px; margin: 0 auto 30px; }

/* ---------- faq ---------- */
.faq-list { max-width: 780px; }
.faq-list details { border: 1px solid var(--line); border-radius: 14px; margin-bottom: 14px; background: var(--card); overflow: hidden; }
.faq-list summary {
  cursor: pointer; list-style: none; padding: 18px 22px;
  font-family: var(--font-head); font-weight: 600; font-size: 16px;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; color: var(--cyan); font-size: 20px; transition: transform .2s; }
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p { padding: 0 22px 20px; color: var(--ink-dim); font-size: 15px; }

/* ---------- cta ---------- */
.cta { text-align: center; padding: 110px 24px 130px; position: relative; }
.cta-orb {
  width: 130px; height: 130px; margin: 0 auto 36px; border-radius: 50%;
  background: radial-gradient(circle at 42% 40%, #fff7e0, var(--gold) 55%, rgba(245,185,66,0) 75%);
  box-shadow: 0 0 60px rgba(245,185,66,.5), 0 0 140px rgba(245,185,66,.22);
  animation: navpulse 3s ease-in-out infinite;
}
.cta h2 { font-size: clamp(34px, 5vw, 58px); }
.cta p { color: var(--ink-dim); margin-bottom: 34px; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line); background: rgba(6, 10, 18, .8); }
.foot-inner {
  max-width: 1240px; margin: 0 auto; padding: 60px 24px 40px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px;
}
@media (max-width: 860px) { .foot-inner { grid-template-columns: 1fr 1fr; } }
.foot-brand { display: flex; flex-direction: column; gap: 10px; }
.foot-brand b { letter-spacing: .22em; font-family: var(--font-head); display: flex; align-items: center; }
.foot-brand p, .foot-col p { color: var(--ink-dim); font-size: 13.5px; }
.foot-col { display: flex; flex-direction: column; gap: 10px; }
.foot-col h4 { font-family: var(--font-head); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; color: var(--ink); margin-bottom: 6px; }
.foot-col a { color: var(--ink-dim); font-size: 14px; transition: color .2s; }
.foot-col a:hover { color: var(--cyan); }
.foot-orbs { display: flex; gap: 10px; margin-bottom: 8px; }
.foot-orbs i { width: 12px; height: 12px; border-radius: 50%; background: var(--c); box-shadow: 0 0 10px var(--c); }
.foot-note { font-size: 12px !important; }
.foot-bottom { border-top: 1px solid var(--line); text-align: center; padding: 20px; color: #5b7280; font-size: 13px; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}