/* Lingvokey site — see ../DESIGN.md */
:root {
  --bg: #0f0f14; --bg2: #16161d; --card: #1b1b24; --card2: #22222d; --line: #2a2a36; --text: #ececf3; --muted: #9a9aab;
  --accent: #6366f1; --accent2: #8b5cf6; --ok: #22c55e; --warn: #f59e0b; --radius: 16px;
  --paper: #ffffff; --ink: #1b1b24;
  --font: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, "Noto Sans", sans-serif;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root { --bg: #f7f7fb; --bg2: #eeeef6; --card: #ffffff; --card2: #f3f3f9; --line: #e2e2ec; --text: #17171f; --muted: #5f5f72; color-scheme: light; }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation: none !important; transition: none !important; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent2); outline-offset: 3px; border-radius: 6px; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 780px; }
.center { text-align: center; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.skip { position: absolute; left: 12px; top: -48px; background: var(--accent); color: #fff; padding: 8px 14px; border-radius: 10px; z-index: 50; }
.skip:focus { top: 12px; }

/* header */
header { position: sticky; top: 0; z-index: 20; backdrop-filter: blur(14px); background: color-mix(in srgb, var(--bg) 80%, transparent); border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; gap: 22px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--text); }
.brand img { width: 30px; height: 30px; border-radius: 8px; }
.brand.sm { font-size: 15px; } .brand.sm img { width: 22px; height: 22px; border-radius: 6px; }
.brand:hover { text-decoration: none; }
nav { display: flex; gap: 22px; margin-left: auto; }
nav a { color: var(--muted); font-size: 15px; }
nav a:hover { color: var(--text); text-decoration: none; }
select.lang { background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 7px 8px; font: inherit; font-size: 14px; max-width: 150px; }
@media (max-width: 860px) { nav { display: none; } select.lang { margin-left: auto; } }
@media (max-width: 520px) { .hide-sm { display: none !important; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 0; border-radius: 12px; padding: 13px 22px; font: 600 15px var(--font); cursor: pointer; transition: transform .15s, box-shadow .15s, border-color .15s; color: #fff; text-decoration: none !important; }
.btn.sm { padding: 9px 16px; font-size: 14px; border-radius: 10px; }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); box-shadow: 0 10px 28px -12px var(--accent); }
.btn.primary:hover { transform: translateY(-1px); box-shadow: 0 14px 32px -12px var(--accent); }
.btn.ghost { background: var(--card); color: var(--text); border: 1px solid var(--line); }
.btn.ghost:hover { border-color: var(--accent); }
.btn[aria-disabled="true"] { opacity: .6; cursor: default; transform: none; }
.btn svg { width: 20px; height: 20px; flex: none; }

/* sections */
section { padding: 96px 0; }
section.tight { padding: 24px 0; }
.band { background: var(--bg2); border-block: 1px solid var(--line); }
h2 { font-size: clamp(26px, 3.4vw, 38px); line-height: 1.15; letter-spacing: -.015em; margin: 0 0 12px; }
h3 { font-size: 18px; margin: 0 0 8px; }
.sub { color: var(--muted); font-size: 17px; margin: 0 auto 44px; max-width: 680px; }
@media (max-width: 760px) { section { padding: 64px 0; } }

/* hero */
.hero { padding: 72px 0 56px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: -200px -10% auto auto; width: 720px; height: 720px; background: radial-gradient(closest-side, color-mix(in srgb, var(--accent2) 26%, transparent), transparent); pointer-events: none; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; position: relative; }
.eyebrow { display: inline-block; color: var(--accent2); font-weight: 600; font-size: 14px; letter-spacing: .02em; margin: 0 0 14px; background: color-mix(in srgb, var(--accent2) 14%, transparent); padding: 5px 12px; border-radius: 999px; }
.hero h1 { font-size: clamp(36px, 5.2vw, 58px); line-height: 1.07; margin: 0 0 18px; letter-spacing: -.025em; }
.grad { background: linear-gradient(135deg, var(--accent), var(--accent2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 28px; max-width: 560px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.facts { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: 14px; }
.facts li::before { content: "✓"; color: var(--ok); font-weight: 700; margin-right: 6px; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; gap: 40px; } }

/* hero demo stage */
.stage { position: relative; min-height: 380px; }
.win { background: var(--card); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 40px 80px -40px rgba(0,0,0,.6); overflow: hidden; }
.win-bar { display: flex; align-items: center; gap: 7px; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.win-bar i { width: 11px; height: 11px; border-radius: 50%; background: var(--line); }
.win-title { margin-left: 8px; font-size: 13px; color: var(--muted); font-weight: 600; }
.win-body { padding: 18px; display: grid; gap: 14px; }
.msg.in { justify-self: start; background: var(--card2); padding: 10px 14px; border-radius: 14px 14px 14px 4px; font-size: 15px; max-width: 85%; }
.compose { min-height: 52px; border: 1px solid var(--line); border-radius: 12px; padding: 13px 14px; font-size: 17px; background: var(--bg); display: flex; align-items: center; }
#demoText.fixed { color: var(--ok); font-weight: 600; }
.caret { width: 2px; height: 22px; background: var(--accent2); margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.scene-tag { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--muted); min-height: 26px; transition: opacity .3s; }
.scene-tag b { background: color-mix(in srgb, var(--accent) 22%, transparent); color: var(--text); padding: 3px 10px; border-radius: 999px; font-size: 12px; }
.pop { position: absolute; right: -8px; bottom: -6px; width: min(360px, 92%); background: var(--card); border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 30px 60px -28px rgba(0,0,0,.65); padding: 12px 14px; opacity: 0; transform: translateY(10px) scale(.98); transition: opacity .35s, transform .35s; }
.pop.show, .pop.static { opacity: 1; transform: none; }
.pop.static { position: static; width: 100%; }
.pop-head { display: flex; align-items: center; gap: 6px; padding-bottom: 10px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.pop-head .arrow { color: var(--muted); font-size: 13px; }
.pop-head .meta { margin-left: auto; font-size: 12px; color: var(--muted); }
.chip { font-size: 11.5px; font-weight: 700; padding: 3px 9px; border-radius: 999px; background: var(--card2); color: var(--muted); }
.chip.on { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }
.pop-text { padding: 12px 2px; font-size: 16px; line-height: 1.5; }
.pop-orig { font-size: 13px; color: var(--muted); background: var(--card2); border-radius: 10px; padding: 8px 10px; margin-bottom: 10px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.pop-btns { display: flex; gap: 6px; flex-wrap: wrap; padding-top: 10px; border-top: 1px solid var(--line); }
.pop-btns .b { font-size: 13px; padding: 6px 12px; border-radius: 9px; background: var(--card2); }
.pop-btns .b.on { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }
.pop-btns .b.ic { padding: 6px 9px; }
.voice { position: absolute; left: 50%; top: 46%; transform: translate(-50%, -50%) scale(.96); display: inline-flex; align-items: center; gap: 9px; background: #18181f; color: #fff; padding: 10px 16px; border-radius: 999px; font-size: 14px; box-shadow: 0 18px 40px -16px rgba(0,0,0,.7); opacity: 0; transition: opacity .3s, transform .3s; }
.voice.show { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.voice.static { position: static; transform: none; opacity: 1; justify-self: start; }
.voice b { background: rgba(255,255,255,.14); padding: 1px 8px; border-radius: 999px; font-size: 12px; }
.voice .dot { width: 9px; height: 9px; border-radius: 50%; background: #f43f5e; box-shadow: 0 0 0 4px rgba(244,63,94,.25); }
.wave { display: inline-flex; gap: 3px; align-items: center; height: 16px; }
.wave i { width: 3px; background: #f43f5e; border-radius: 2px; animation: wave 1s ease-in-out infinite; }
.wave i:nth-child(2) { animation-delay: .15s } .wave i:nth-child(3) { animation-delay: .3s } .wave i:nth-child(4) { animation-delay: .45s } .wave i:nth-child(5) { animation-delay: .6s }
@keyframes wave { 0%, 100% { height: 4px } 50% { height: 16px } }

/* "works in" strip */
.works { padding: 28px 0; border-block: 1px solid var(--line); background: var(--bg2); }
.works .wrap { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; justify-content: center; }
.works p { margin: 0; color: var(--muted); font-size: 14px; }
.works ul { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0; justify-content: center; }
.works li { font-size: 14px; font-weight: 600; padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); }

/* feature rows */
.feature-list .row, .band .row { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature-list .row { padding: 36px 0; }
.feature-list .row + .row { border-top: 1px solid var(--line); }
.row.rev .txt { order: 2; }
.txt h3 { font-size: clamp(22px, 2.4vw, 28px); letter-spacing: -.01em; margin: 14px 0 10px; }
.txt h2 { margin-top: 14px; }
.txt > p { color: var(--muted); font-size: 17px; margin: 0 0 16px; }
.band .txt .sub { margin: 0 0 16px; }
.tile { display: inline-grid; place-items: center; width: 48px; height: 48px; border-radius: 14px; background: color-mix(in srgb, var(--c) 18%, transparent); color: var(--c); }
.tile svg { width: 26px; height: 26px; }
.tile.sm { width: 40px; height: 40px; border-radius: 12px; } .tile.sm svg { width: 22px; height: 22px; }
.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 9px; }
.ticks li { position: relative; padding-left: 28px; }
.ticks li::before { content: ""; position: absolute; left: 0; top: 5px; width: 18px; height: 18px; border-radius: 6px; background: color-mix(in srgb, var(--ok) 18%, transparent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322c55e' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m5 12 5 5 9-10'/%3E%3C/svg%3E") center / 12px no-repeat; }
.btns { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 6px; }
@media (max-width: 900px) { .feature-list .row, .band .row { grid-template-columns: 1fr; gap: 28px; } .row.rev .txt { order: 0; } }

/* mock-ups */
.mock { position: relative; }
.mock::before { content: ""; position: absolute; inset: 8% 6%; background: radial-gradient(closest-side, color-mix(in srgb, var(--accent) 22%, transparent), transparent); filter: blur(10px); z-index: -1; }
.card-ui { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 18px; display: grid; gap: 12px; box-shadow: 0 30px 60px -36px rgba(0,0,0,.55); }
.field { border: 1px solid var(--line); background: var(--bg); border-radius: 12px; padding: 12px 14px; font-size: 16px; }
.field.small { font-size: 13px; padding: 9px 12px; }
.field s { color: #f43f5e; opacity: .8; }
.field .fix { color: var(--ok); }
.hint { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 13px; }
.muted-t { color: var(--muted); }
.said { font-size: 14px; color: var(--muted); font-style: italic; }
.arrow-down { color: var(--muted); text-align: center; line-height: 1; }
.palette .search { border: 1px solid var(--accent); border-radius: 10px; padding: 9px 12px; font-family: Consolas, monospace; }
.palette .item { display: flex; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 10px; font-size: 15px; }
.palette .item.on { background: color-mix(in srgb, var(--accent) 16%, transparent); }
.palette .ab { margin-left: auto; color: var(--muted); font-family: Consolas, monospace; font-size: 13px; }
.palette .prev { font-size: 13.5px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 10px; }
.var { color: var(--accent2); font-family: Consolas, monospace; font-size: 13px; }
.gmail .g-top { font-size: 13px; color: var(--muted); display: flex; gap: 8px; align-items: center; border-bottom: 1px solid var(--line); padding-bottom: 10px; }
.gmail .g-body { font-size: 15px; min-height: 64px; }
.gmail .g-bar { display: flex; gap: 8px; justify-content: flex-end; }
.gmail .b { font-size: 13px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); }
.gmail .b.on { border-color: transparent; background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }

/* offline models */
.models { display: grid; gap: 14px; }
.model { position: relative; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.model p { margin: 6px 0 0; color: var(--muted); font-size: 14.5px; padding-right: 64px; }
.mh { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.pill { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 999px; }
.pill.fast { background: color-mix(in srgb, #0ea5e9 20%, transparent); color: #38bdf8; }
.pill.good { background: color-mix(in srgb, var(--ok) 20%, transparent); color: var(--ok); }
.size { position: absolute; right: 18px; bottom: 16px; font-size: 13px; color: var(--muted); font-weight: 600; }

/* mini cards */
.mini { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.mini .m { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; transition: border-color .2s, transform .2s; }
.mini .m:hover { border-color: color-mix(in srgb, var(--accent) 60%, var(--line)); transform: translateY(-2px); }
.mini h3 { margin-top: 14px; }
.mini p { margin: 0; color: var(--muted); font-size: 14.5px; }
@media (max-width: 1000px) { .mini { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .mini { grid-template-columns: 1fr; } }

/* privacy */
.privacy { display: flex; gap: 18px; align-items: flex-start; background: linear-gradient(135deg, color-mix(in srgb, var(--ok) 13%, transparent), transparent); border: 1px solid color-mix(in srgb, var(--ok) 35%, var(--line)); border-radius: var(--radius); padding: 24px 26px; }
.privacy > svg { width: 34px; height: 34px; color: var(--ok); flex: none; }
.privacy p { margin: 0; }
.fine2 { color: var(--muted); font-size: 14px; margin-top: 8px !important; }

/* how */
.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; counter-reset: s; }
.steps li { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.steps .n { display: inline-grid; place-items: center; width: 36px; height: 36px; border-radius: 50%; background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; font-weight: 700; margin-bottom: 12px; }
.steps p { margin: 0; color: var(--muted); font-size: 15px; }
@media (max-width: 760px) { .steps { grid-template-columns: 1fr; } }

/* pricing */
.plans { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; position: relative; display: flex; flex-direction: column; }
.plan.best { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent), 0 24px 48px -28px var(--accent); }
.plan .tag { position: absolute; top: -11px; left: 22px; background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; font-size: 12px; font-weight: 700; padding: 3px 11px; border-radius: 999px; }
.price { font-size: 36px; font-weight: 700; margin: 6px 0 14px; letter-spacing: -.02em; }
.price small { font-size: 15px; color: var(--muted); font-weight: 500; }
.plan ul { padding: 0; margin: 0; list-style: none; display: grid; gap: 8px; font-size: 15px; }
.plan li::before { content: "✓"; color: var(--ok); font-weight: 700; margin-right: 8px; }
.howbuy { color: var(--muted); font-size: 14px; text-align: center; max-width: 760px; margin: 28px auto 0; }
@media (max-width: 1000px) { .plans { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .plans { grid-template-columns: 1fr; } }

/* download */
.dl { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 16px; }
.os { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: flex; flex-direction: column; align-items: flex-start; gap: 6px; }
.os.main { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.os .logo { width: 34px; height: 34px; }
.os p { color: var(--muted); font-size: 15px; margin: 0 0 10px; flex: 1; }
.badge-soon { font-size: 13px; color: var(--warn); background: color-mix(in srgb, var(--warn) 14%, transparent); padding: 4px 10px; border-radius: 999px; }
@media (max-width: 860px) { .dl { grid-template-columns: 1fr; } }
.notify { margin: 28px auto 0; max-width: 720px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 24px; display: grid; gap: 12px; }
.opts { display: flex; gap: 18px; flex-wrap: wrap; font-size: 15px; }
.row-f { display: flex; gap: 10px; flex-wrap: wrap; }
.row-f input[type=email] { flex: 1; min-width: 220px; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; font: inherit; }
.hp { position: absolute; left: -9999px; }
.fine { color: var(--muted); font-size: 13px; margin: 0; }
.msg { margin: 0; font-size: 14px; } .msg.ok { color: var(--ok); } .msg.err { color: #f87171; }

/* faq */
details { border: 1px solid var(--line); background: var(--card); border-radius: 14px; padding: 4px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 600; padding: 14px 0; list-style: none; display: flex; justify-content: space-between; gap: 12px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--muted); font-size: 20px; line-height: 1; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--muted); margin: 0 0 16px; }

/* final */
.final { text-align: center; padding: 72px 0; background: radial-gradient(60% 120% at 50% 100%, color-mix(in srgb, var(--accent) 22%, transparent), transparent); border-top: 1px solid var(--line); }
.final h2 { max-width: 720px; margin: 0 auto 24px; }

/* footer */
footer { border-top: 1px solid var(--line); padding: 26px 0; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; gap: 18px; flex-wrap: wrap; align-items: center; }
footer a { color: var(--muted); }
.grow { flex: 1; }

/* legal pages (privacy, terms, refund) */
main.legal { max-width: 780px; padding-top: 48px; padding-bottom: 72px; }
main.legal h1 { font-size: clamp(30px, 4vw, 42px); letter-spacing: -.02em; margin: 0 0 6px; }
main.legal h2 { font-size: 22px; margin: 36px 0 10px; }
main.legal p, main.legal li { color: color-mix(in srgb, var(--text) 86%, var(--muted)); }
main.legal ul { padding-left: 22px; display: grid; gap: 8px; }
main.legal code { background: var(--card2); padding: 1px 6px; border-radius: 6px; font-size: 14px; }
.date { color: var(--muted); font-size: 14px; margin: 0 0 28px; }
.box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; margin: 18px 0; }

/* grid children may shrink (a no-wrap line inside a mock-up must not widen the page) */
.feature-list .row > *, .band .row > *, .hero-grid > * { min-width: 0; }