/* ─── Tokens ─────────────────────────────────────────────── */
:root {
  --bg:        #0a0c10;
  --surface:   #111418;
  --border:    #1e2530;
  --accent:    #00d4aa;
  --accent2:   #0077ff;
  --text:      #e2e8f0;
  --muted:     #64748b;
  --danger:    #ff4757;
  --font-mono: 'Courier New', Courier, monospace;
  --font-ui:   system-ui, -apple-system, sans-serif;
}

/* ─── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--accent); text-decoration: none; }

/* ─── Nav ────────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-brand {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.nav-links { display: flex; gap: 1.5rem; }
.nav-link {
  color: var(--muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  transition: color 0.15s;
}
.nav-link:hover, .nav-link.active { color: var(--accent); }

/* ─── Hero ───────────────────────────────────────────────── */
.hero {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 5rem 2rem 4rem;
}
.hero-content { max-width: 960px; width: 100%; }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}
.sub {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 540px;
  margin-bottom: 3rem;
}

/* ─── Cards ──────────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color 0.2s, transform 0.15s;
  cursor: pointer;
}
.tool-card:not(.disabled):hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.tool-card.disabled { opacity: 0.4; cursor: default; }
.tool-icon { font-size: 1.75rem; }
.tool-name { font-weight: 700; font-size: 1rem; }
.tool-desc { color: var(--muted); font-size: 0.85rem; flex: 1; }
.tool-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: 0.5rem;
}

/* ─── Footer ─────────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 1.25rem 2rem;
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}