/*
  Webstroy EOOD — Minimal, professional stylesheet
  - System font stack
  - CSS variables for easy theming
  - Responsive layout with Flexbox/Grid
  - Lightweight and fast
*/

:root {
  --bg: #ffffff;
  --text: #0f172a; /* slate-900 */
  --muted: #475569; /* slate-600 */
  --border: #e2e8f0; /* slate-200 */
  --surface: #f8fafc; /* slate-50 */
  --brand: #2563eb; /* blue-600 */
  --brand-700: #1d4ed8; /* blue-700 */
  --brand-50: #eff6ff; /* blue-50 */
  --shadow: 0 1px 2px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --maxw: 1120px;
}

/* Base */
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

/* Accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}
.skip-link:focus {
  left: 16px;
  top: 16px;
  width: auto;
  height: auto;
  padding: 8px 12px;
  background: var(--brand);
  color: #fff;
  border-radius: var(--radius-sm);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--brand), var(--brand-700));
  color: #fff;
  font-size: 14px;
  box-shadow: var(--shadow);
}
.brand-name {
  font-size: 18px;
}

.nav { display: flex; gap: 16px; align-items: center; }
.nav a { color: var(--text); font-weight: 500; padding: 6px 8px; border-radius: 8px; }
.nav a:hover { background: var(--surface); text-decoration: none; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 16px;
  border-radius: 10px;
  font-weight: 600;
  line-height: 1.2;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease, color 120ms ease, border-color 120ms ease;
  border: 1px solid transparent;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow); text-decoration: none; }
.btn:active { transform: translateY(0); box-shadow: none; }
.btn-small { padding: 8px 12px; border-radius: 8px; }

.btn-primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn-primary:hover { background: var(--brand-700); border-color: var(--brand-700); }

.btn-ghost { background: #ffffff; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { background: var(--surface); }

/* Hero */
.hero {
  background: radial-gradient(1200px 400px at 50% -20%, var(--brand-50), transparent 60%), linear-gradient(#ffffff, #ffffff);
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  padding: 72px 0 56px;
  text-align: center;
}
.hero h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.15;
}
.lead {
  margin: 0 auto 24px;
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(16px, 2.4vw, 18px);
}
.cta-group { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* Sections */
.section { padding: 56px 0; }
.section-alt { background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.grid.two-col {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 28px;
}

.key-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.key-points li {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
}

/* Cards */
.cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h3 { margin-top: 0; margin-bottom: 6px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

/* Contact */
.contact {
  display: grid;
  gap: 16px;
}
.contact-card {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  background: #fff;
}
.contact-item { display: grid; gap: 4px; }
.contact-label { font-size: 12px; letter-spacing: 0.3px; text-transform: uppercase; color: var(--muted); }
.contact-value { font-weight: 600; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: #fff;
}
.footer-inner {
  padding: 28px 0;
  color: var(--muted);
  font-size: 14px;
}
.small { font-size: 12px; color: #64748b; }

/* Typography spacing */
h1, h2, h3 { letter-spacing: -0.2px; }
h2 { font-size: 24px; margin: 0 0 10px; }
p { margin: 0 0 12px; }

/* Responsive */
@media (max-width: 960px) {
  .grid.two-col { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .header-inner { height: 60px; }
  .nav { gap: 8px; }
  .cards { grid-template-columns: 1fr; }
  .section { padding: 44px 0; }
}