/* Basic reset + variables */
* { box-sizing: border-box; }
/* :root {
  /* --bg: #0f172a;         
  /*--panel: #111827;      
  --text: #e5e7eb;      
  --muted: #9ca3af;      
  --accent: #38bdf8;     
  --accent-2: #22c55e;   
  --radius: 16px;
  --shadow: 0 10px 30px rgba(0,0,0,.25); */
} */

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container {
  max-width: 980px;
  padding: 0 20px;
  margin: 0 auto;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(17,24,39,.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(148,163,184,.15);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 64px;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--text); }
.nav a { margin-left: 16px; padding: 8px 10px; border-radius: 8px; }
.nav a.active, .nav a:hover { background: rgba(148,163,184,.1); text-decoration: none; }

/* Hero */
.hero {
  padding: 64px 0 28px;
  text-align: center;
}
.hero h1 {
  font-size: clamp(2rem, 3.5vw + 1rem, 3rem);
  margin: 0 0 10px;
}
.hero p { color: var(--muted); margin: 0 0 18px; }
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b1020;
  padding: 10px 16px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: var(--shadow);
}
.btn:hover { filter: brightness(1.05); text-decoration: none; }

/* Cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 18px;
  padding: 24px 0 56px;
}
.card {
  background: var(--panel);
  border: 1px solid rgba(148,163,184,.12);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card h2 { margin-top: 0; font-size: 1.15rem; }

/* Footer */
.site-footer {
  border-top: 1px solid rgba(148,163,184,.15);
  padding: 18px 0 36px;
  color: var(--muted);
  font-size: .95rem;
}

/* Small screens */
@media (max-width: 520px) {
  .nav a { margin-left: 8px; }
}