/* Argus 2.0 — стилі сайту. Шрифти підключені у fontfaces.css (локально, без CDN). */
@import url("fontfaces.css");

:root {
  --bg: #06080A;
  --panel: #0D1116;
  --panel-2: #121821;
  --text: #E9EEF3;
  --muted: #8B99A6;
  --dim: #5C6873;
  --accent: #D99A1E;
  --accent-hover: #E8B34D;
  --danger: #E5544B;
  --success: #35C07A;
  --border: rgba(255, 255, 255, 0.08);
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  --wrap: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
[hidden] { display: none !important; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

h1, h2, h3 { margin: 0; letter-spacing: -0.02em; line-height: 1.15; font-weight: 600; }
h1 { font-size: clamp(30px, 4.6vw, 48px); letter-spacing: -0.03em; text-wrap: balance; }
h2 { font-size: clamp(24px, 3.2vw, 34px); max-width: 24ch; text-wrap: balance; }
h3 { font-size: 19px; }
p { margin: 0; }
code { font-family: var(--mono); font-size: 0.92em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 28px; }
.wrap-narrow { max-width: 760px; }

.section { padding: 88px 0; }
.section-alt { background: var(--panel); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section h2 + .section-lead,
.section h2 + .company-grid { margin-top: 22px; }
.section-lead { color: var(--muted); font-size: 17px; max-width: 62ch; }
.sub-h { margin-top: 56px; font-size: 22px; }
.note { margin-top: 18px; color: var(--dim); font-size: 14px; max-width: 70ch; }
.lead { font-size: 18px; line-height: 1.55; }
.kicker { color: var(--accent); font-weight: 500; margin-bottom: 14px; }

/* ---------- кнопки ---------- */
.btn {
  display: inline-block;
  padding: 13px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.2;
  transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--accent); color: var(--bg); }
.btn-primary:hover { background: var(--accent-hover); color: var(--bg); }
.btn-outline { border-color: rgba(217, 154, 30, .55); color: var(--accent); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-hover); }
.btn-sm { padding: 9px 16px; font-size: 14px; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 30px; }

/* ---------- шапка ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  padding: 16px 0;
  background: rgba(6, 8, 10, .72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: padding .2s, border-color .2s, background .2s;
}
.site-header.is-scrolled { padding: 10px 0; background: rgba(6, 8, 10, .92); border-bottom-color: var(--border); }
.header-row { display: flex; align-items: center; gap: 28px; }
.logo { color: var(--text); font-weight: 700; font-size: 17px; letter-spacing: -0.01em; white-space: nowrap; }
.logo span { font-family: var(--mono); font-size: 12px; color: var(--accent); margin-left: 6px; font-weight: 500; }
.nav { display: flex; gap: 22px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: 14px; }
.nav a:hover { color: var(--text); }
.header-right { display: flex; align-items: center; gap: 14px; margin-left: auto; }
.lang { color: var(--muted); font-size: 13px; font-weight: 600; letter-spacing: .04em; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; }
.lang:hover { color: var(--text); border-color: var(--muted); }

/* ---------- hero: відео на фоні ---------- */
.hero { position: relative; padding: 170px 0 56px; min-height: 640px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; }
.hero-bg { position: absolute; inset: 0; z-index: 0; background: var(--panel-2); }
.hero-bg video { width: 100%; height: 100%; object-fit: cover; display: block; }
.hero-shade {
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 8, 10, .93) 0%, rgba(6, 8, 10, .72) 46%, rgba(6, 8, 10, .35) 100%),
    linear-gradient(180deg, rgba(6, 8, 10, .55) 0%, rgba(6, 8, 10, 0) 30%, rgba(6, 8, 10, 0) 60%, var(--bg) 100%);
}
.hero-osd { position: absolute; top: 96px; right: 28px; }
.hero-osd i { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: var(--danger); margin: 0 5px 1px 0; animation: blink 1.4s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .hero-osd i { animation: none; } }
.hero-text { position: relative; z-index: 1; max-width: var(--wrap); }
.hero-text h1 { max-width: 20ch; }
.hero-text .lead { margin-top: 22px; color: #B7C2CC; max-width: 46ch; }

/* кадр з рамкою детекції — використовується у hero */
.shot { position: relative; border-radius: 10px; overflow: hidden; background: var(--panel-2); border: 1px solid var(--border); aspect-ratio: 16 / 10; }
.shot img { width: 100%; height: 100%; object-fit: cover; }
.osd {
  font-family: var(--mono); font-size: 12px; letter-spacing: .04em;
  color: #fff; background: rgba(0, 0, 0, .55); padding: 4px 8px; border-radius: 4px;
}
.osd-tl { position: absolute; top: 12px; left: 12px; }
.dbox { position: absolute; pointer-events: none; }
.dbox .c { position: absolute; width: 18px; height: 18px; border: 2px solid var(--accent); }
.dbox .tl { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.dbox .tr { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.dbox .bl { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.dbox .br { bottom: 0; right: 0; border-left: 0; border-top: 0; }
.dlbl {
  position: absolute; left: 0; top: -26px;
  font-family: var(--mono); font-size: 12px; color: var(--bg);
  background: var(--accent); padding: 3px 7px; border-radius: 3px; white-space: nowrap;
}

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 64px; padding-top: 32px; border-top: 1px solid var(--border); position: relative; z-index: 1; }
.stat b { display: block; font-size: 34px; font-weight: 600; letter-spacing: -0.03em; line-height: 1; }
.stat span { display: block; margin-top: 8px; color: var(--muted); font-size: 14px; max-width: 22ch; }

/* ---------- заглушка для відсутньої картинки (js/script.js) ---------- */
.img-missing {
  display: flex; align-items: center; justify-content: center; text-align: center;
  width: 100%; height: 100%; min-height: 160px; padding: 20px;
  background: repeating-linear-gradient(135deg, var(--panel-2) 0 14px, var(--panel) 14px 28px);
  color: var(--dim); font-family: var(--mono); font-size: 12px; line-height: 1.5;
}
figure.company-media, .step-media, .ch figure {
  margin: 0; border-radius: 10px; overflow: hidden; border: 1px solid var(--border); background: var(--panel-2);
}
figure.company-media { aspect-ratio: 3 / 2; }
.step-media { aspect-ratio: 16 / 10; margin-top: 18px; }
.ch figure { aspect-ratio: 3 / 2; }
figure img { width: 100%; height: 100%; object-fit: cover; }

/* ---------- компанія ---------- */
.company-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 48px; align-items: center; }
.company-text p + p { margin-top: 16px; }
.company-text p:not(.lead) { color: var(--muted); }
.uses { margin: 20px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 12px 32px; }
.uses li { position: relative; padding-left: 20px; color: var(--muted); font-size: 15px; }
.uses li::before { content: ""; position: absolute; left: 0; top: .62em; width: 8px; height: 8px; border-radius: 2px; background: var(--accent); }

.mission { margin-top: 40px; font-size: clamp(20px, 2.4vw, 26px); font-weight: 600; letter-spacing: -0.02em; line-height: 1.3; max-width: 30ch; padding-left: 20px; border-left: 3px solid var(--accent); }

/* ---------- чому ---------- */
.why-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px 32px; margin-top: 32px; color: var(--muted); }
.why-sum { margin-top: 36px; font-size: 19px; font-weight: 500; max-width: 60ch; }

/* ---------- класи ---------- */
.classes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 32px; }
.cls {
  position: relative; padding: 16px; border-radius: 10px; border: 1px solid var(--border);
  background: linear-gradient(160deg, var(--panel-2), var(--panel));
  display: grid; gap: 4px;
}
.cls .osd { position: absolute; top: 12px; left: 12px; font-size: 11px; }
.cls code { display: block; margin-top: 30px; color: var(--accent); font-size: 13px; }
.cls b { font-size: 17px; font-weight: 600; margin-top: 4px; }
.cls span { color: var(--muted); font-size: 13px; }
.cls em {
  position: absolute; top: 12px; right: 12px; font-style: normal;
  font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 99px;
}
.cls.live em { color: var(--success); background: rgba(53, 192, 122, .12); }
.cls.soon em { color: var(--muted); background: rgba(255, 255, 255, .06); }
.cls.soon { opacity: .72; }
.notdo { margin-top: 44px; padding: 22px 24px; border: 1px solid var(--border); border-radius: 10px; max-width: 560px; }
.notdo h3 { font-size: 16px; color: var(--muted); font-weight: 500; }
.notdo ul { margin: 12px 0 0; padding: 0; list-style: none; }
.notdo li { padding: 6px 0 6px 24px; position: relative; }
.notdo li::before { content: "×"; position: absolute; left: 0; color: var(--danger); font-weight: 600; }

/* ---------- як працює ---------- */
.steps { margin: 36px 0 0; padding: 0; list-style: none; counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.steps li { counter-increment: step; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; font-family: var(--mono); color: var(--accent); font-size: 13px; margin-bottom: 12px; }
.steps p { margin-top: 10px; color: var(--muted); }

.scheme { margin-top: 56px; display: flex; align-items: stretch; gap: 0; }
.sbox { flex: 1; padding: 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); display: flex; flex-direction: column; justify-content: center; gap: 4px; text-align: center; }
.sbox b { font-weight: 600; }
.sbox span { color: var(--muted); font-size: 13px; }
.sbox-node { border-color: rgba(217, 154, 30, .5); }
.sbox-out { gap: 8px; }
.sbox-out span { color: var(--text); background: var(--panel-2); padding: 6px 8px; border-radius: 6px; }
.sarrow { flex: 0 0 64px; position: relative; display: flex; align-items: center; justify-content: center; }
.sarrow::before { content: ""; position: absolute; left: 8px; right: 8px; top: 50%; border-top: 1px dashed var(--dim); }
.sarrow::after { content: ""; position: absolute; right: 8px; top: 50%; width: 7px; height: 7px; border-top: 1px solid var(--dim); border-right: 1px solid var(--dim); transform: translateY(-50%) rotate(45deg); }
.sarrow span { position: relative; background: var(--panel); padding: 2px 6px; font-size: 11px; color: var(--accent); font-family: var(--mono); white-space: nowrap; }

/* ---------- точність ---------- */
.acc-grid { display: grid; grid-template-columns: 260px 1fr; gap: 40px; align-items: center; margin-top: 40px; }
.big-num b { display: block; font-size: 84px; font-weight: 600; letter-spacing: -0.05em; line-height: .95; color: var(--accent); }
.big-num span { display: block; margin-top: 12px; color: var(--muted); max-width: 22ch; }
.cmp { width: 100%; border-collapse: collapse; font-size: 15px; }
.cmp th, .cmp td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); }
.cmp th { color: var(--muted); font-weight: 500; font-size: 13px; }
.cmp td:not(:first-child), .cmp th:not(:first-child) { text-align: right; font-family: var(--mono); font-size: 14px; white-space: nowrap; }
.cmp td:first-child { color: var(--muted); }
.cmp td.good { color: var(--success); font-weight: 600; }

.layers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 24px; counter-reset: lay; }
.layers > div { counter-increment: lay; padding: 16px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel); }
.layers > div::before { content: counter(lay, decimal-leading-zero); font-family: var(--mono); color: var(--accent); font-size: 12px; display: block; margin-bottom: 10px; }
.layers b { display: block; font-weight: 600; font-size: 15px; }
.layers span { display: block; margin-top: 6px; color: var(--muted); font-size: 14px; }

.tune { display: grid; grid-template-columns: 1.2fr .8fr; gap: 40px; margin-top: 64px; align-items: center; }
.tune-text p { margin-top: 14px; color: var(--muted); }
.tune-text ol { margin: 20px 0 0; padding-left: 20px; color: var(--muted); display: grid; gap: 8px; }
.tune-demo { display: grid; gap: 12px; }
.ba { padding: 16px; border-radius: 10px; border: 1px solid var(--border); background: var(--panel); display: grid; gap: 6px; }
.ba code { font-size: 15px; }
.ba span { color: var(--muted); font-size: 14px; }
.ba-before code { color: var(--danger); }
.ba-after { border-color: rgba(53, 192, 122, .4); }
.ba-after code { color: var(--success); }

/* ---------- канали ---------- */
.channels { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px 40px; margin-top: 36px; }
.ch h3 { margin-top: 16px; }
.ch p { margin-top: 8px; color: var(--muted); font-size: 15px; }
.sla { margin-top: 56px; padding: 26px 28px; border-radius: 10px; background: var(--bg); border: 1px solid var(--border); }
.sla-list { margin: 12px 0 0; padding: 0; list-style: none; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 28px; }
.sla-list li { position: relative; padding-left: 18px; color: var(--muted); font-size: 15px; }
.sla-list li::before { content: ""; position: absolute; left: 0; top: .62em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* ---------- безпека ---------- */
.sec-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 36px; }
.sec-grid > div { padding: 18px; border: 1px solid var(--border); border-radius: 10px; background: var(--panel); }
.sec-grid b { display: block; font-weight: 600; }
.sec-grid span { display: block; margin-top: 6px; color: var(--muted); font-size: 14px; }

/* ---------- що далі ---------- */
.roadmap { margin: 28px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; max-width: 640px; }
.roadmap li { padding: 12px 16px 12px 40px; border: 1px dashed var(--border); border-radius: 8px; color: var(--muted); position: relative; }
.roadmap li::before { content: ""; position: absolute; left: 16px; top: 50%; width: 10px; height: 10px; border: 2px solid var(--dim); border-radius: 50%; transform: translateY(-50%); }

/* ---------- як почати ---------- */
.stages { margin: 36px 0 0; padding: 0; list-style: none; counter-reset: stg; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stages li { counter-increment: stg; padding-top: 16px; border-top: 2px solid var(--border); }
.stages li::before { content: counter(stg, decimal-leading-zero); font-family: var(--mono); color: var(--accent); font-size: 13px; display: block; margin-bottom: 10px; }
.stages h3 { font-size: 17px; }
.stages p { margin-top: 8px; color: var(--muted); font-size: 14px; }
.pilot { margin-top: 48px; padding: 28px; border-radius: 10px; border: 1px solid rgba(217, 154, 30, .4); display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.pilot p { font-size: 18px; max-width: 46ch; }

/* ---------- фонове відео секції (FAQ) ---------- */
.has-bg { position: relative; overflow: hidden; }
.has-bg > .wrap { position: relative; z-index: 1; }
.section-bg { position: absolute; inset: 0; z-index: 0; opacity: 0; transition: opacity .8s ease; pointer-events: none; }
.section-bg.is-on { opacity: 1; }
.is-always .section-bg { opacity: 1; }
.section-bg video { width: 100%; height: 100%; object-fit: cover; display: block; }
.section-shade { position: absolute; inset: 0; background: linear-gradient(180deg, var(--panel) 0%, rgba(13, 17, 22, .66) 30%, rgba(13, 17, 22, .66) 70%, var(--panel) 100%); }
.is-always .section-shade { background: linear-gradient(180deg, var(--panel) 0%, rgba(13, 17, 22, .8) 26%, rgba(13, 17, 22, .8) 74%, var(--panel) 100%); }
@media (prefers-reduced-motion: reduce) { .section-bg { display: none; } }

/* ---------- faq ---------- */
.faq { margin-top: 28px; border-top: 1px solid var(--border); }
.faq details { border-bottom: 1px solid var(--border); }
.faq summary { cursor: pointer; padding: 18px 40px 18px 0; font-weight: 600; list-style: none; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 16px; color: var(--accent); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 0 20px; color: var(--muted); max-width: 70ch; }

/* ---------- контакти ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: start; }
.form { margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.form input, .form select, .form textarea {
  width: 100%; background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  padding: 12px 14px; color: var(--text); font: inherit; font-size: 15px;
}
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); }
.form textarea { resize: vertical; }
.form .full { grid-column: 1 / -1; }
.form-status { grid-column: 1 / -1; font-family: var(--mono); font-size: 14px; color: var(--success); }
.form-status.err { color: var(--danger); }
.direct { padding: 28px; border-radius: 10px; border: 1px solid rgba(217, 154, 30, .35); }
.direct p { margin-top: 10px; color: var(--muted); }
.direct-links { margin-top: 20px; display: grid; gap: 12px; justify-items: start; }
.direct-links a[id^="link-phone"], .direct-links a[id^="link-email"] { font-size: 17px; color: var(--text); }
.direct .note { margin-top: 16px; }

/* ---------- підвал ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-row { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-row p { color: var(--dim); font-size: 13px; flex: 1; }
.footer-row .by { display: block; margin-top: 4px; font-size: 10px; color: #3a434c; letter-spacing: .02em; }
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--muted); font-size: 13px; }
.footer-links a:hover { color: var(--text); }

/* ---------- адаптив ---------- */
@media (max-width: 980px) {
  .company-grid, .tune, .contact-grid, .acc-grid { grid-template-columns: 1fr; }
  .classes, .sec-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: 1fr 1fr; }
  .layers, .stages { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .scheme { flex-direction: column; }
  .sarrow { flex-basis: 48px; }
  .sarrow::before { left: 50%; right: auto; top: 6px; bottom: 6px; border-top: 0; border-left: 1px dashed var(--dim); }
  .sarrow::after { right: auto; left: 50%; top: auto; bottom: 8px; transform: translateX(-50%) rotate(135deg); }
  .big-num b { font-size: 64px; }
}
@media (max-width: 720px) {
  .wrap { padding: 0 18px; }
  .section { padding: 64px 0; }
  .hero { padding-top: 120px; min-height: 560px; }
  .hero-osd { top: 76px; right: 18px; }
  .nav { display: none; }
  .header-right { gap: 10px; }
  .stats { grid-template-columns: 1fr 1fr; gap: 24px 16px; }
  .stat b { font-size: 28px; }
  .uses, .why-grid, .sla-list, .channels, .classes, .sec-grid, .layers, .stages { grid-template-columns: 1fr; }
  .form { grid-template-columns: 1fr; }
  .cmp th, .cmp td { padding: 10px 8px; }
  .cmp td:first-child { font-size: 13px; }
  .pilot { padding: 22px; }
}