/* Hub layout — uses tokens from /web-app/shared/styles/tokens.css */
:root {
  /* graceful fallback if tokens.css is missing */
  --ink-950:#0A1A2F; --text:#E6EAF2; --border:#2A3A52;
  --violet-500:#8B7EC8; --teal-500:#4ECDC4; --navy-700:#2D3E50; --peach-400:#FFB88C;
}

* { box-sizing: border-box }
html, body { height: 100% }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg, var(--ink-950));
  color: var(--text, #E6EAF2);
}

/* Header */
.db-header {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px; border-bottom: 1px solid var(--border);
  background: rgba(10, 26, 47, 0.8); backdrop-filter: blur(8px);
}
.brand { display: inline-flex; gap: 12px; align-items: center; text-decoration: none; color: inherit }
.brand-icon { width: 44px; height: 44px }
.brand-text { display: grid; line-height: 1.1 }
.brand-text strong { font-weight: 800; letter-spacing: -0.01em }
.subtitle { font-size: 12px; opacity: .8 }

.header-actions { display: flex; gap: 8px }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px; border-radius: 10px; border: 1px solid var(--border);
  background: #0F1929; color: var(--text); font-weight: 600; text-decoration: none;
  box-shadow: 0 6px 18px rgba(2,6,23,.22); transition: transform .2s, box-shadow .2s
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(2,6,23,.35) }
.btn.ghost { background: transparent; box-shadow:none }

/* Container */
.container { max-width: 1100px; margin: 0 auto; padding: 24px 20px 48px }
.hero {
  margin: 10px 0 6px; font-size: clamp(22px, 3.6vw, 36px); font-weight: 800; letter-spacing: -0.01em
}
.lede { opacity: .9; margin: 0 0 18px }

/* Grid */
.grid {
  display: grid; gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
@media (max-width: 900px){ .grid { grid-template-columns: 1fr } }

.card {
  position: relative;
  display: block; text-decoration: none; color: inherit;
  border: 1px solid var(--border);
  border-radius: 16px; padding: 18px;
  background: #121C2C;
  box-shadow: 0 6px 18px rgba(2,6,23,.22);
  transition: transform .18s ease, box-shadow .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(2,6,23,.38) }
.card .card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 6px }
.card .card-icon { width: 36px; height: 36px }
.card h2 { margin: 0; font-size: 18px; font-weight: 800 }
.card p { margin: 6px 0 28px; opacity: .95 }
.card.surface { background: #0F1929 }

/* Chips */
.chip {
  position: absolute; bottom: 12px; right: 12px;
  font-size: 12px; font-weight: 700; letter-spacing: .02em;
  padding: 6px 10px; border-radius: 999px;
  background: rgba(230, 234, 242, .12); border: 1px solid var(--border);
}

/* Gradients (brand-tuned) */
.card.grad-focus {
  background: linear-gradient(135deg, rgba(124,58,237,.20), rgba(37,99,235,.20));
  border-color: rgba(124,58,237,.35);
}
.card.grad-violet {
  background: linear-gradient(135deg, rgba(139,126,200,.20), rgba(39,160,248,.18));
  border-color: rgba(139,126,200,.40);
}
.card.grad-teal {
  background: linear-gradient(135deg, rgba(78,205,196,.20), rgba(10,26,47,.50));
  border-color: rgba(78,205,196,.40);
}

/* Footer */
.db-footer { padding: 28px 20px; border-top: 1px solid var(--border); text-align: center; opacity: .75 }