/* UVLAB — landing page styles */

:root {
  --bg: #0B0E0D;
  --bg-alt: #0F1311;
  --panel: #131816;
  --panel-2: #171D1A;
  --line: #232C28;
  --line-2: #2F3B35;
  --text: #E8ECE6;
  --muted: #8D988F;
  --dim: #5E6A62;
  --accent: #FFB000;
  --accent-dim: rgba(255, 176, 0, .12);
  --ok: #7FB069;
  --danger: #E5604D;

  --font-head: "Chakra Petch", "Segoe UI", sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;

  --radius: 2px;
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
h1, h2, h3 { font-family: var(--font-head); font-weight: 600; line-height: 1.1; margin: 0; letter-spacing: -.01em; }
p { margin: 0; }
.mono { font-family: var(--font-mono); letter-spacing: .04em; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

::selection { background: var(--accent); color: #000; }

/* ---------- Panels with corner brackets ---------- */
.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
}
.panel::before, .panel::after {
  content: "";
  position: absolute;
  width: 12px; height: 12px;
  border: 0 solid var(--accent);
  pointer-events: none;
}
.panel::before { top: -1px; left: -1px; border-top-width: 2px; border-left-width: 2px; }
.panel::after { bottom: -1px; right: -1px; border-bottom-width: 2px; border-right-width: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  height: 48px; padding: 0 24px;
  font: 600 14px/1 var(--font-head);
  letter-spacing: .08em; text-transform: uppercase;
  border: 1px solid transparent; border-radius: var(--radius);
  cursor: pointer;
  transition: background .2s, color .2s, border-color .2s, transform .2s;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}
.btn-sm { height: 38px; padding: 0 16px; font-size: 12px; }
.btn-primary { background: var(--accent); color: #0B0E0D; }
.btn-primary:hover { background: #FFC233; }
.btn-ghost { border-color: var(--line-2); color: var(--text); background: transparent; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn:disabled { opacity: .6; cursor: progress; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(11, 14, 13, .82);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 32px; height: 72px; }
.brand img { width: 140px; height: auto; }
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav a {
  font: 500 13px/1 var(--font-mono);
  letter-spacing: .1em; text-transform: uppercase;
  color: var(--muted);
  transition: color .2s;
}
.nav a:hover, .nav a.active { color: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 16px; }

.lang { display: flex; border: 1px solid var(--line-2); }
.lang[hidden] { display: none; }
.lang button {
  background: none; border: 0; color: var(--dim);
  font: 500 12px/1 var(--font-mono); letter-spacing: .08em;
  padding: 8px 10px; cursor: pointer;
}
.lang button.active { color: #0B0E0D; background: var(--accent); }
.lang button:not(.active):hover { color: var(--text); }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  background: none; border: 1px solid var(--line-2);
  flex-direction: column; justify-content: center; align-items: center; gap: 6px;
  cursor: pointer;
}
.nav-toggle span { width: 18px; height: 2px; background: var(--text); transition: transform .2s; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: 96px 0 112px; border-bottom: 1px solid var(--line); }
.grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .45;
  mask-image: radial-gradient(ellipse at 70% 40%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 40%, #000 0%, transparent 70%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--font-mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
  padding: 8px 12px; border: 1px solid var(--line-2); background: var(--accent-dim);
  margin-bottom: 28px;
}
.dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .25; } }

.hero h1 { font-size: clamp(40px, 5.4vw, 68px); font-weight: 700; margin-bottom: 24px; text-wrap: balance; }
.lead { font-size: 18px; color: var(--muted); max-width: 580px; margin-bottom: 36px; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 56px; }

.hero-meta { list-style: none; margin: 0; padding: 24px 0 0; display: flex; gap: 40px; flex-wrap: wrap; border-top: 1px solid var(--line); }
.hero-meta li { display: flex; flex-direction: column; gap: 4px; }
.hero-meta .mono { color: var(--text); font-size: 14px; font-weight: 500; }
.hero-meta small { color: var(--dim); font-size: 13px; }

/* HUD */
.hud { padding: 20px; background: linear-gradient(180deg, var(--panel-2), var(--panel)); }
.hud-head { display: flex; justify-content: space-between; font-size: 11px; color: var(--muted); padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.status { display: inline-flex; align-items: center; gap: 6px; color: var(--ok); }
.status i { width: 6px; height: 6px; background: var(--ok); border-radius: 50%; animation: pulse 1.4s infinite; }
.radar { width: 100%; max-width: 340px; margin: 20px auto; }
.radar .sweep { transform-origin: 160px 160px; animation: spin 4s linear infinite; }
@keyframes spin { to { transform: rotate(-360deg); } }
.radar .blips circle { animation: blip 4s infinite; }
.radar .blips circle:nth-child(2) { animation-delay: -1.6s; }
.radar .blips circle:nth-child(3) { animation-delay: -2.8s; }
@keyframes blip { 0%, 100% { opacity: .15; } 10% { opacity: 1; } 60% { opacity: .3; } }
.svg-label { font: 500 10px var(--font-mono); fill: var(--dim); }

.telemetry { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 0; background: var(--line); border: 1px solid var(--line); }
.telemetry div { background: var(--panel); padding: 10px 12px; }
.telemetry dt { font-size: 10px; color: var(--dim); margin-bottom: 2px; }
.telemetry dd { margin: 0; font-size: 11px; color: var(--muted); white-space: nowrap; }
.telemetry b { font-size: 15px; font-weight: 500; color: var(--text); }
.hud-foot { font-size: 10px; color: var(--dim); margin-top: 12px; text-transform: uppercase; }

/* ---------- Sections ---------- */
.section { padding: 112px 0; border-bottom: 1px solid var(--line); }
.section-alt { background: var(--bg-alt); }
.section-head { max-width: 720px; margin-bottom: 56px; }
.kicker { color: var(--accent); font-size: 12px; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 16px; }
.section h2 { font-size: clamp(30px, 3.6vw, 44px); margin-bottom: 18px; text-wrap: balance; }
.section-lead { color: var(--muted); font-size: 17px; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.cards > .card { grid-column: span 2; }
.cards > .card:nth-child(n+4) { grid-column: span 3; }
.card { padding: 28px 24px; display: flex; flex-direction: column; transition: border-color .25s, transform .25s; }
.card:hover { border-color: var(--line-2); transform: translateY(-3px); }
.card-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 36px; }
.idx { font-size: 11px; color: var(--dim); }
.icon { width: 44px; height: 44px; fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: square; }
.card h3 { font-size: 21px; margin-bottom: 12px; }
.card p { color: var(--muted); font-size: 15px; margin-bottom: 24px; }
.tags { list-style: none; padding: 0; margin: auto 0 0; display: flex; flex-wrap: wrap; gap: 6px; }
.tags li { font-size: 11px; color: var(--muted); border: 1px solid var(--line-2); padding: 4px 8px; }
.card-foot { margin-top: auto; display: grid; gap: 6px; }
.card-foot .tags { margin: 0; }
.card .tag-label { font-size: 10px; line-height: 1.4; color: var(--dim); text-transform: uppercase; letter-spacing: .12em; margin: 8px 0 0; }
.tags li.tag-accent { color: var(--accent); border-color: rgba(255, 176, 0, .45); }

/* Dual use */
.split { display: grid; grid-template-columns: 1fr auto 1fr; gap: 0; align-items: stretch; }
.split-col { padding: 36px; }
.split-head { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.split-head h3 { font-size: 24px; }
.badge { font-size: 11px; padding: 5px 8px; border: 1px solid; }
.badge-civ { color: var(--ok); border-color: rgba(127, 176, 105, .4); background: rgba(127, 176, 105, .08); }
.badge-def { color: var(--accent); border-color: rgba(255, 176, 0, .4); background: var(--accent-dim); }
.list { list-style: none; margin: 0; padding: 0; }
.list li { position: relative; padding: 14px 0 14px 26px; border-top: 1px solid var(--line); color: var(--text); }
.list li::before { content: ""; position: absolute; left: 0; top: 22px; width: 10px; height: 2px; background: var(--accent); }
.split-divider { position: relative; width: 72px; display: flex; align-items: center; justify-content: center; }
.split-divider::before { content: ""; position: absolute; top: 0; bottom: 0; left: 50%; border-left: 1px dashed var(--line-2); }
.split-divider span { position: relative; writing-mode: vertical-rl; font-size: 11px; letter-spacing: .4em; color: var(--dim); background: var(--bg-alt); padding: 12px 0; }
.compliance { margin-top: 32px; font-size: 12px; color: var(--dim); }

/* Approach */
.steps { list-style: none; padding: 0; margin: 0 0 56px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line-2); }
.step { position: relative; padding: 28px 28px 0 0; }
.step::before { content: ""; position: absolute; top: -5px; left: 0; width: 9px; height: 9px; background: var(--bg); border: 2px solid var(--accent); transform: rotate(45deg); }
.step-n { display: block; color: var(--accent); font-size: 13px; margin-bottom: 14px; }
.step h3 { font-size: 20px; margin-bottom: 10px; }
.step p { color: var(--muted); font-size: 15px; }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.pillars div { background: var(--bg); padding: 24px; display: flex; align-items: center; gap: 18px; }
.pillars b { font-size: 18px; color: var(--accent); min-width: 44px; }
.pillars span { color: var(--muted); font-size: 15px; }

/* Contact */
.contact { display: grid; grid-template-columns: .85fr 1.15fr; gap: 64px; align-items: start; }
.contact-list { margin: 40px 0 0; }
.contact-list div { display: grid; grid-template-columns: 110px 1fr; padding: 14px 0; border-top: 1px solid var(--line); }
.contact-list dt { font-size: 12px; color: var(--dim); text-transform: uppercase; padding-top: 3px; }
.contact-list dd { margin: 0; }
.contact-list a { color: var(--accent); }
.contact-list a:hover { text-decoration: underline; }

.form { padding: 32px; display: grid; gap: 18px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 8px; }
.form label > span { font: 500 11px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.form input, .form select, .form textarea {
  width: 100%;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--line-2); border-radius: var(--radius);
  padding: 12px 14px;
  font: 15px/1.4 var(--font-body);
  transition: border-color .2s, box-shadow .2s;
}
.form select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(-45deg, transparent 50%, var(--muted) 50%); background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 36px; }
.form textarea { resize: vertical; min-height: 130px; }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.form .invalid { border-color: var(--danger); }
.form label.check { grid-template-columns: auto 1fr; align-items: start; gap: 12px; }
.form label.check span { font: 14px/1.5 var(--font-body); letter-spacing: 0; text-transform: none; color: var(--muted); }
.form label.check input { width: 18px; height: 18px; margin: 2px 0 0; accent-color: var(--accent); }
.form label.check.invalid span { color: var(--danger); }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
.form-foot { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 6px; }
.form-status { font-size: 13px; }
.form-status.ok { color: var(--ok); }
.form-status.err { color: var(--danger); }

/* Footer */
.site-footer { padding: 36px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer-inner img { width: 110px; height: auto; opacity: .9; }
.footer-inner p, .footer-inner a { font-size: 12px; color: var(--dim); }
.footer-inner a:hover { color: var(--accent); }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
  .cards > .card, .cards > .card:nth-child(n+4) { grid-column: auto; }
  .cards > .card:last-child { grid-column: 1 / -1; }
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hud { max-width: 560px; }
  .contact { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed; top: 72px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--bg); border-bottom: 1px solid var(--line);
    padding: 8px 24px 16px;
    transform: translateY(-120%); transition: transform .3s;
    z-index: -1;
  }
  .nav.open { transform: none; }
  .nav a { padding: 16px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
  .nav-toggle { display: flex; }
  .header-actions { margin-left: auto; }
  .header-cta { display: none; }
  .split { grid-template-columns: 1fr; gap: 20px; }
  .split-divider { display: none; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
  .pillars { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .container { padding: 0 16px; }
  .hero { padding: 64px 0 80px; }
  .section { padding: 80px 0; }
  .cards, .row { grid-template-columns: 1fr; }
  .cards > .card:last-child { grid-column: auto; }
  .steps { grid-template-columns: 1fr; }
  .telemetry { grid-template-columns: repeat(2, 1fr); }
  .hero-meta { gap: 24px; }
  .split-col, .form { padding: 24px 20px; }
  .brand img { width: 120px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}