:root {
  --bg: #f6f7fb; --surface: #ffffff; --surface-2: #eef1f7; --text: #0f1729; --muted: #5b6478;
  --border: #dde2ec; --brand: #3b5bfd; --brand-2: #10b3a3; --danger: #d33a4a; --ok: #149a5b;
  --shadow: 0 8px 30px rgba(15, 23, 41, .08); --radius: 16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1020; --surface: #121a30; --surface-2: #19223d; --text: #e8ecf6; --muted: #9aa5be;
    --border: #26304d; --brand: #7b93ff; --brand-2: #3fd6c6; --danger: #ff6b7a; --ok: #3fd68b;
    --shadow: 0 8px 30px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.topbar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
.topbar .wrap { display: flex; align-items: center; gap: 18px; height: 60px; }
.logo { font-weight: 800; letter-spacing: .2px; font-size: 18px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.logo .dot { width: 12px; height: 12px; border-radius: 50%; background: linear-gradient(135deg, var(--brand), var(--brand-2)); }
.nav { display: flex; gap: 14px; flex-wrap: wrap; margin-left: auto; align-items: center; }
.nav a { color: var(--muted); font-weight: 600; }
.nav a.active, .nav a:hover { color: var(--text); text-decoration: none; }
.btn { display: inline-flex; align-items: center; gap: 8px; border: 0; cursor: pointer; border-radius: 999px;
  padding: 11px 20px; font-weight: 700; font-size: 15px; background: var(--brand); color: #fff; text-decoration: none; }
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn.ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn.small { padding: 7px 14px; font-size: 13px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }
.muted { color: var(--muted); }
.kpi .label { color: var(--muted); font-size: 13px; font-weight: 600; text-transform: uppercase; letter-spacing: .4px; }
.kpi .value { font-size: 26px; font-weight: 800; margin-top: 4px; }
.kpi .sub { color: var(--muted); font-size: 13px; }
h1 { font-size: clamp(30px, 5vw, 52px); line-height: 1.08; margin: 0 0 14px; letter-spacing: -.5px; }
h2 { font-size: 24px; margin: 0 0 12px; }
h3 { font-size: 17px; margin: 0 0 6px; }
.page { padding: 28px 0 60px; }
.pill { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 700;
  background: var(--surface-2); color: var(--muted); }
.pill.ok { color: var(--ok); } .pill.bad { color: var(--danger); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.table-scroll { overflow-x: auto; }
input, textarea { width: 100%; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font: inherit; }
input:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--brand) 45%, transparent); }
label { font-weight: 600; font-size: 14px; display: block; margin: 12px 0 6px; }
.error { color: var(--danger); font-weight: 600; }

/* landing */
.hero { padding: 64px 0 40px; display: grid; gap: 32px; grid-template-columns: 1.2fr 1fr; align-items: center; }
.hero p.lead { font-size: 19px; color: var(--muted); margin: 0 0 24px; }
.hero .cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-visual { aspect-ratio: 1 / 1; max-width: 360px; width: 100%; margin: 0 auto; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, color-mix(in srgb, var(--brand-2) 80%, white), var(--brand) 55%, #1b2a7a 100%);
  box-shadow: 0 30px 80px color-mix(in srgb, var(--brand) 40%, transparent); position: relative; }
.hero-visual::after { content: ""; position: absolute; inset: -18px; border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--brand) 30%, transparent); animation: pulse 3s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { transform: scale(1); opacity: .7; } 50% { transform: scale(1.05); opacity: .25; } }
.section { padding: 36px 0; }
.feature .icon { font-size: 26px; }
.steps { counter-reset: s; display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.steps .card::before { counter-increment: s; content: counter(s); display: inline-grid; place-items: center;
  width: 30px; height: 30px; border-radius: 50%; background: var(--brand); color: #fff; font-weight: 800; margin-bottom: 8px; }
.soon { font-size: 12px; font-weight: 700; color: var(--brand-2); }
footer { border-top: 1px solid var(--border); padding: 24px 0; color: var(--muted); font-size: 14px; }
@media (max-width: 760px) { .hero { grid-template-columns: 1fr; padding-top: 36px; } .hero-visual { max-width: 220px; } }

/* chat */
.chat { display: flex; flex-direction: column; height: calc(100vh - 170px); min-height: 420px; }
.messages { flex: 1; overflow-y: auto; padding: 8px 4px; display: flex; flex-direction: column; gap: 10px; }
.msg { max-width: 78%; padding: 10px 14px; border-radius: 16px; white-space: pre-wrap; word-wrap: break-word; }
.msg.owner { align-self: flex-end; background: var(--brand); color: #fff; border-bottom-right-radius: 4px; }
.msg.jarvis { align-self: flex-start; background: var(--surface); border: 1px solid var(--border); border-bottom-left-radius: 4px; }
.msg .meta { display: block; margin-top: 6px; font-size: 11.5px; color: var(--muted); }
.msg.owner .meta { color: rgba(255, 255, 255, .8); }
.composer { display: flex; gap: 10px; padding-top: 12px; }
.composer input { flex: 1; }
.suggest { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 0; }
.suggest button { border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 999px;
  padding: 6px 12px; cursor: pointer; font: inherit; font-size: 13px; }

/* voice */
.voice { display: grid; gap: 20px; grid-template-columns: 1fr 1fr; align-items: start; }
@media (max-width: 860px) { .voice { grid-template-columns: 1fr; } }
.orb-wrap { display: grid; place-items: center; padding: 24px 0; }
.orb { width: 220px; height: 220px; border-radius: 50%; border: 0; cursor: pointer; position: relative; color: #fff;
  font-weight: 800; font-size: 16px; background: radial-gradient(circle at 35% 30%, #8fe7dd, var(--brand) 60%, #1b2a7a);
  box-shadow: 0 20px 60px color-mix(in srgb, var(--brand) 45%, transparent); transition: transform .2s; }
.orb:active { transform: scale(.97); }
.orb.listening { animation: breathe 2.2s ease-in-out infinite; }
.orb.thinking { background: radial-gradient(circle at 35% 30%, #ffd98a, #f08a24 60%, #7a3a12); animation: spin 1.4s linear infinite; }
.orb.speaking { background: radial-gradient(circle at 35% 30%, #a9ffd6, var(--brand-2) 55%, #0b5e57); animation: talk .5s ease-in-out infinite alternate; }
@keyframes breathe { 0%, 100% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--brand) 50%, transparent); } 50% { box-shadow: 0 0 0 22px transparent; } }
@keyframes talk { from { transform: scale(1); } to { transform: scale(1.04); } }
@keyframes spin { from { filter: hue-rotate(0); } to { filter: hue-rotate(40deg); } }
.state { text-align: center; color: var(--muted); font-weight: 600; margin-top: 12px; min-height: 24px; }
.transcript { max-height: 60vh; overflow-y: auto; display: flex; flex-direction: column; gap: 8px; }
.line { padding: 8px 12px; border-radius: 12px; background: var(--surface-2); }
.line.owner { background: color-mix(in srgb, var(--brand) 14%, var(--surface)); }
.line.system { color: var(--muted); font-size: 13px; background: transparent; padding: 2px 4px; }
.line small { color: var(--muted); display: block; font-size: 11.5px; }
.controls { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 10px; }
select { padding: 8px 10px; border-radius: 10px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; }