@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=JetBrains+Mono:wght@300;400;500&display=swap');

:root {
  --bg:        #0a0a0f;
  --bg-card:   #0f0f17;
  --bg-hover:  #14141f;
  --border:    #1e1e30;
  --accent:    #4f8ef7;
  --accent-dim:#2a4a8a;
  --text:      #d4d4e8;
  --text-muted:#6b6b8a;
  --text-dim:  #3a3a5a;
  --white:     #f0f0ff;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* subtle grid overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,142,247,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,142,247,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ─── Header ─── */
header {
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 0;
  position: relative;
  z-index: 10;
}

.header-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.05em;
}

.logo span { color: var(--accent); }

nav { display: flex; gap: 0.25rem; }

.nav-link, .nav-link-active {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.45rem 0.9rem;
  border-radius: 4px;
  transition: all 0.2s;
}

.nav-link {
  color: var(--text-muted);
}

.nav-link:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.nav-link-active {
  color: var(--accent);
  background: rgba(79,142,247,0.08);
  border: 1px solid rgba(79,142,247,0.2);
}

/* ─── Main ─── */
main {
  flex: 1;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 4rem 2rem;
}

/* ─── Section label ─── */
.section-label {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2rem;
  transition: border-color 0.25s;
}

.card:hover { border-color: var(--accent-dim); }

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  padding: 0.65rem 1.5rem;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover {
  background: #6aa3ff;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(79,142,247,0.35);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid rgba(79,142,247,0.4);
}

.btn-outline:hover {
  background: rgba(79,142,247,0.08);
  border-color: var(--accent);
}

/* ─── Footer ─── */
footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  position: relative;
  z-index: 1;
  letter-spacing: 0.05em;
}

footer span { color: var(--accent); }