/* ITCraft — минималистичный, аккуратный стиль с поддержкой тем */

:root {
  --bg: #0b0c10;
  --surface: rgba(255,255,255,0.06);
  --text: #e6e6e6;
  --muted: #a6a8ad;
  --primary: #6ee7ff;
  --primary-ink: #003646;
  --accent: #8b5cf6;
  --ok: #22c55e;
  --warn: #f59e0b;
  --danger: #ef4444;
  --shadow: 0 10px 30px rgba(0,0,0,0.25);
  --radius: 14px;
}

html[data-theme="light"] {
  --bg: #f7f8fb;
  --surface: rgba(0,0,0,0.04);
  --text: #121316;
  --muted: #51545a;
  --primary: #0ea5e9;
  --primary-ink: #ffffff;
  --accent: #7c3aed;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(1200px 800px at 80% -10%, rgba(110,231,255,0.12), transparent),
              radial-gradient(1000px 600px at -10% 10%, rgba(139,92,246,0.14), transparent),
              var(--bg);
}

.container { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(150%) blur(8px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid color-mix(in oklab, var(--text) 12%, transparent);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; gap: 12px; }
.logo { font-weight: 800; letter-spacing: 0.2px; color: var(--text); text-decoration: none; font-size: 20px; }
.logo span { color: var(--accent); }

.nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.nav a { color: var(--text); opacity: 0.9; text-decoration: none; padding: 8px 10px; border-radius: 10px; }
.nav a:hover { background: var(--surface); }

.theme-toggle { border: none; background: var(--surface); color: var(--text); padding: 8px 10px; border-radius: 10px; cursor: pointer; }

.hero { position: relative; }
.hero-inner { padding: 84px 0 36px; text-align: center; }
.hero h1 { font-size: clamp(28px, 3.6vw, 48px); line-height: 1.1; margin: 0 0 14px; }
.lead { color: var(--muted); font-size: clamp(16px, 2.2vw, 20px); margin: 0 auto 22px; max-width: 800px; }

.cta-row { display: flex; gap: 12px; justify-content: center; margin-bottom: 22px; flex-wrap: wrap; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 18px; border-radius: 12px; text-decoration: none; font-weight: 600; transition: transform .08s ease; }
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: linear-gradient(135deg, var(--primary), color-mix(in oklab, var(--primary), var(--accent) 35%)); color: var(--primary-ink); box-shadow: var(--shadow); }
.btn--ghost { border: 1px solid color-mix(in oklab, var(--text) 14%, transparent); color: var(--text); background: transparent; }

.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 18px; }
.stat { background: var(--surface); border: 1px solid color-mix(in oklab, var(--text) 10%, transparent); border-radius: 14px; padding: 14px; }
.num { font-size: 20px; font-weight: 800; }
.label { color: var(--muted); font-size: 13px; }

.hero-bg { position: absolute; inset: 0; background:
  radial-gradient(600px 200px at 50% 0%, rgba(110,231,255,0.12), transparent),
  linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  pointer-events: none;
}

.section { padding: 54px 0; }
.section--alt { background: color-mix(in oklab, var(--bg) 92%, transparent); border-top: 1px solid color-mix(in oklab, var(--text) 10%, transparent); border-bottom: 1px solid color-mix(in oklab, var(--text) 10%, transparent); }
.section h2 { font-size: clamp(22px, 2.6vw, 32px); margin: 0 0 16px; }
.section-lead { color: var(--muted); margin-top: -6px; margin-bottom: 18px; }

.two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; align-items: start; }

.cards { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 14px; }
.cards li { background: var(--surface); border: 1px solid color-mix(in oklab, var(--text) 10%, transparent); border-radius: var(--radius); padding: 16px; }
.cards h3 { margin: 0 0 6px; font-size: 18px; }
.cards p { margin: 0; color: var(--muted); }

.service-cards { grid-template-columns: repeat(3, minmax(0,1fr)); }

.tech-list { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 10px; }
.tech-list li { background: var(--surface); border: 1px solid color-mix(in oklab, var(--text) 12%, transparent); padding: 8px 12px; border-radius: 999px; font-weight: 600; font-size: 14px; }

.case-cards { grid-template-columns: repeat(3, minmax(0,1fr)); }
.case-top p { color: var(--muted); }
.pill { display: inline-block; background: color-mix(in oklab, var(--accent) 22%, transparent); color: var(--text); padding: 4px 8px; border-radius: 999px; margin-right: 6px; font-size: 12px; border: 1px solid color-mix(in oklab, var(--accent) 30%, transparent); }
.case-metric { margin-top: 10px; font-weight: 700; color: var(--ok); }

.checklist { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 10px; }
.checklist li { display: flex; gap: 10px; align-items: flex-start; }
.checklist li::before { content: "✔"; color: var(--ok); margin-top: 2px; }

.process { margin: 8px 0 0; padding-left: 18px; }
.process li { margin-bottom: 6px; }

.contact { background: linear-gradient(180deg, color-mix(in oklab, var(--accent) 8%, transparent), transparent); }
.contact-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.contact-actions { display: flex; gap: 10px; flex-wrap: wrap; }

.site-footer { border-top: 1px solid color-mix(in oklab, var(--text) 14%, transparent); padding: 18px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.footer-links { display: flex; gap: 12px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }

/* Responsive */
@media (max-width: 980px) {
  .two-col { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .service-cards { grid-template-columns: 1fr 1fr; }
  .case-cards { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .service-cards { grid-template-columns: 1fr; }
  .case-cards { grid-template-columns: 1fr; }
  .hero-inner { padding-top: 64px; }
}