:root {
  --bg: #0f1115;
  --surface: #161a22;
  --text: #e9eef8;
  --muted: #9aa6b2;
  --primary: #6ee7f2;
  --primary-600: #42c9d6;
  --accent: #a78bfa;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #ef4444;
  --card: #12161d;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 16px;
  --nav-h: 72px;
  --trans: all .25s ease;
  --heading-w: 800;
  --maxw: 1180px;
  --ring: 0 0 0 3px rgba(110,231,242,.35);
}

[data-theme="light"] {
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #0d1321;
  --muted: #4b5563;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --accent: #7c3aed;
  --card: #ffffff;
  --shadow: 0 10px 28px rgba(2,6,23,.08);
  --ring: 0 0 0 3px rgba(37,99,235,.25);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 80% -20%, rgba(110,231,242,.08), transparent 60%), var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

img { max-width: 100%; display: block; border-radius: 12px; }
a { color: var(--primary); text-decoration: none; transition: var(--trans); }
a:hover { color: var(--accent); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.navbar {
  position: sticky; top: 0; z-index: 50;
  height: var(--nav-h);
  background: linear-gradient(180deg, rgba(0,0,0,.35), rgba(0,0,0,0)), var(--surface);
  backdrop-filter: saturate(140%) blur(8px);
  box-shadow: var(--shadow);
}
.nav-inner {
  height: var(--nav-h); display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 36px; height: 36px; border-radius: 8px; object-fit: cover; }
.brand .title { font-weight: 800; letter-spacing: .3px; }
.nav-links { display: flex; gap: 14px; align-items: center; }
.nav-links a {
  padding: 10px 14px; border-radius: 12px; color: var(--text); font-weight: 600; letter-spacing: .2px;
}
.nav-links a:hover { background: rgba(110,231,242,.12); }

.theme-toggle {
  display: inline-flex; align-items: center; gap: 8px;
  background: linear-gradient(145deg, var(--surface), var(--card));
  color: var(--text); border: 0; padding: 10px 14px; border-radius: 12px;
  cursor: pointer; box-shadow: var(--shadow);
}
.theme-toggle:active { transform: translateY(1px); }

.hero {
  padding: 56px 0 20px;
}
.hero-wrap {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: 36px; align-items: center;
}
.hero h1 {
  font-size: clamp(30px, 4vw, 48px);
  margin: 0 0 10px;
  letter-spacing: .2px; font-weight: 900;
  background: linear-gradient(90deg, var(--text), var(--primary)); -webkit-background-clip: text; color: transparent;
}
.hero p { margin: 0 0 18px; color: var(--muted); font-size: 18px; }
.cta { display: inline-flex; align-items: center; gap: 10px; background: linear-gradient(120deg, var(--primary), var(--accent));
  color: #fff; padding: 12px 18px; border-radius: 12px; font-weight: 700; box-shadow: var(--shadow); }
.cta:hover { filter: brightness(1.05); transform: translateY(-1px); }

.grid { display: grid; gap: 22px; }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
@media (max-width: 960px) { .grid.cols-3, .grid.cols-2, .hero-wrap { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(145deg, var(--card), var(--surface));
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--trans);
}
.card:hover { transform: translateY(-4px); }

.card-body { padding: 18px; }
.card h3 { margin: 0 0 8px; font-weight: var(--heading-w); letter-spacing: .2px; }
.card p { margin: 0; color: var(--muted); }
.card .meta { display: flex; gap: 12px; align-items: center; color: var(--muted); font-size: 14px; margin-top: 10px; }

.section { padding: 36px 0; }
.section h2 { margin: 0 0 14px; font-size: 28px; font-weight: 800; }

.featured {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 24px; align-items: stretch;
}
@media (max-width: 960px) { .featured { grid-template-columns: 1fr; } }

.badge {
  display: inline-block; background: rgba(167,139,250,.15); color: var(--accent);
  padding: 6px 10px; border-radius: 999px; font-weight: 700; font-size: 12px; letter-spacing: .5px;
}

.footer {
  margin-top: 40px; background: var(--surface); border-top: 1px solid rgba(255,255,255,.07);
}
.footer-inner {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 24px; padding: 28px 0;
}
@media (max-width: 960px) {
  .footer-inner { grid-template-columns: 1fr; }
}
.footer h4 { margin: 0 0 10px; font-weight: 800; }
.footer a { color: var(--text); opacity: .9; }
.footer a:hover { color: var(--primary); }

.social { display: flex; gap: 12px; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 12px;
  background: var(--card); border: 1px solid rgba(255,255,255,.06);
}
.icon-btn:hover { background: rgba(110,231,242,.12); }

.contact {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: start;
}
@media (max-width: 960px) { .contact { grid-template-columns: 1fr; } }

.form {
  background: linear-gradient(145deg, var(--card), var(--surface)); padding: 20px; border-radius: var(--radius); box-shadow: var(--shadow);
}
.input {
  display: block; width: 100%; padding: 12px 14px; border-radius: 12px; outline: none; background: var(--bg); color: var(--text);
  border: 1px solid rgba(255,255,255,.09); transition: var(--trans);
}
.input:focus { border-color: var(--primary); box-shadow: var(--ring); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 600px) { .row { grid-template-columns: 1fr; } }
.label { font-weight: 700; font-size: 14px; margin: 8px 0; color: var(--muted); }
.btn {
  background: linear-gradient(120deg, var(--primary), var(--accent));
  color: #fff; border: 0; padding: 12px 16px; border-radius: 12px; cursor: pointer; font-weight: 800; letter-spacing: .3px;
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }

.alert {
  position: fixed; inset: auto 20px 20px auto; background: var(--surface); border: 1px solid rgba(255,255,255,.12);
  padding: 16px 18px; border-radius: 12px; box-shadow: var(--shadow); display: none; z-index: 1000;
}
.alert.show { display: block; }

.cookie-banner {
  position: fixed; left: 20px; right: 20px; bottom: 20px; z-index: 999; max-width: 980px; margin: 0 auto;
  background: var(--surface); border: 1px solid rgba(255,255,255,.12); border-radius: 16px; box-shadow: var(--shadow); padding: 16px;
  display: none; gap: 14px;
}
.cookie-row { display: grid; grid-template-columns: 1fr auto; gap: 16px; align-items: center; }
.cookie-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie-banner p { margin: 0; color: var(--muted); }
.cookie-btn { padding: 10px 14px; border-radius: 10px; border: 0; font-weight: 700; cursor: pointer; }
.cookie-accept { background: var(--success); color: #082016; }
.cookie-reject { background: var(--danger); color: #fff; }
.cookie-settings { background: var(--card); color: var(--text); border: 1px solid rgba(255,255,255,.12); }
.cookie-link { text-decoration: underline; color: var(--primary); }

.settings-panel {
  position: fixed; inset: 0; display: none; align-items: center; justify-content: center; z-index: 1000; background: rgba(0,0,0,.5);
}
.settings-card {
  width: 560px; max-width: calc(100% - 32px);
  background: var(--surface); border: 1px solid rgba(255,255,255,.12);
  border-radius: 16px; box-shadow: var(--shadow); padding: 18px;
}
.settings-card h3 { margin: 0 0 10px; }
.switch {
  display: flex; align-items: center; justify-content: space-between; padding: 12px 0; border-bottom: 1px dashed rgba(255,255,255,.12);
}
.switch:last-child { border: 0; }
.switch input { width: 44px; height: 24px; appearance: none; background: var(--bg); border-radius: 999px; position: relative; border: 1px solid rgba(255,255,255,.12); cursor: pointer; }
.switch input:checked { background: var(--primary); border-color: var(--primary); }
.switch input::after { content: ""; width: 18px; height: 18px; position: absolute; top: 2.5px; left: 3px; background: #fff; border-radius: 50%; transition: var(--trans); }
.switch input:checked::after { transform: translateX(19px); }

.heading-hover h1:hover,
.heading-hover h2:hover,
.heading-hover h3:hover {
  text-shadow: 0 10px 30px rgba(0,0,0,.25);
  transform: translateY(-1px);
  transition: var(--trans);
}

.breadcrumbs { font-size: 14px; color: var(--muted); margin-bottom: 8px; }
.breadcrumbs a { color: var(--muted); }
.breadcrumbs a:hover { color: var(--primary); }

.post-content { font-size: 18px; }
.post-content h2 { margin-top: 22px; }
.post-cover { border-radius: 16px; width: 100%; height: 340px; object-fit: cover; }

.table {
  width: 100%; border-collapse: collapse; overflow: hidden; border-radius: 12px; border: 1px solid rgba(255,255,255,.1);
}
.table th, .table td { padding: 12px 14px; border-bottom: 1px solid rgba(255,255,255,.06); }
.table tr:hover { background: rgba(110,231,242,.06); }

.contact-card {
  background: linear-gradient(145deg, var(--card), var(--surface)); padding: 16px; border-radius: 16px; border: 1px solid rgba(255,255,255,.08);
}
.info-row { display: flex; gap: 12px; align-items: center; margin-bottom: 10px; color: var(--muted); }
.info-row svg { width: 20px; height: 20px; }

kbd {
  background: var(--bg); border: 1px solid rgba(255,255,255,.1); border-bottom-width: 3px;
  padding: 2px 6px; border-radius: 6px; font-weight: 800; font-size: 12px; color: var(--text);
}