:root {
  --bg-0: #07090f;
  --bg-1: #0a0d14;
  --bg-2: #11151e;
  --bg-3: #161b27;
  --surface: rgba(22, 27, 39, 0.7);
  --surface-elev: rgba(28, 34, 49, 0.8);
  --border: rgba(255,255,255,0.06);
  --border-2: rgba(255,255,255,0.12);
  --border-strong: rgba(255,255,255,0.18);

  --txt:       #f1f5f9;
  --txt-2:     #cbd5e1;
  --txt-dim:   #94a3b8;
  --txt-faint: #64748b;

  --bull:    #10b981;
  --bear:    #ef4444;
  --neutral: #3b82f6;
  --gold:    #fbbf24;
  --cyan:    #22d3ee;
  --magenta: #f472b6;

  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', ui-monospace, monospace;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 14px;
  --r-xl: 20px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.18);
  --shadow-md: 0 4px 18px rgba(0,0,0,0.28), 0 1px 2px rgba(0,0,0,0.18);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.42), 0 2px 8px rgba(0,0,0,0.22);
  --glow-bull: 0 0 32px rgba(16,185,129,0.18);
  --glow-bear: 0 0 32px rgba(239,68,68,0.18);
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; min-height: 100vh;
  background:
    radial-gradient(1200px 700px at 18% -8%, rgba(59,130,246,0.06), transparent),
    radial-gradient(900px 600px at 82% -4%, rgba(16,185,129,0.05), transparent),
    var(--bg-0);
  color: var(--txt);
  font: 13px/1.45 var(--sans);
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === shared navbar ====================================================== */
.navbar {
  display: grid; grid-template-columns: auto 1fr auto;
  align-items: center; gap: 24px;
  padding: 12px 22px; height: 56px;
  background: linear-gradient(180deg, rgba(17,21,30,0.92), rgba(10,13,20,0.92));
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.nav-brand {
  display: flex; align-items: center; gap: 10px;
  font-weight: 700; letter-spacing: 0.18em; font-size: 13px;
  color: var(--txt);
}
.brand-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px var(--gold), 0 0 24px rgba(251,191,36,0.4);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.85); }
}
.nav-tabs {
  display: flex; gap: 4px; justify-content: center;
  background: var(--bg-2);
  border-radius: 999px; padding: 4px;
  border: 1px solid var(--border);
}
.nav-tab {
  padding: 7px 18px;
  border-radius: 999px;
  color: var(--txt-dim);
  text-decoration: none;
  font-weight: 500; font-size: 12px;
  letter-spacing: 0.05em;
  transition: all 0.15s ease;
}
.nav-tab:hover { color: var(--txt); background: var(--bg-3); }
body[data-page="wall"]     .nav-tab[href="/wall"],
body[data-page="open"]     .nav-tab[href="/open"],
body[data-page="terminal"] .nav-tab[href="/terminal"] {
  background: linear-gradient(135deg, var(--gold), #f59e0b);
  color: #0a0d14; font-weight: 700;
  box-shadow: 0 0 18px rgba(251,191,36,0.32);
}
.nav-meta {
  display: flex; align-items: center; gap: 18px;
  font-family: var(--mono); font-size: 12px;
  color: var(--txt-dim);
}
.meta-row .k { color: var(--txt-faint); font-size: 10px; margin-right: 5px; letter-spacing: 0.1em; }
.meta-row .v { color: var(--txt); font-weight: 600; font-variant-numeric: tabular-nums; }
.meta-clock {
  font-variant-numeric: tabular-nums;
  padding-left: 12px;
  border-left: 1px solid var(--border-2);
}

/* shared utility */
.card {
  background: var(--surface);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  display: flex; flex-direction: column; min-height: 0;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--border-2); }
.card h3 {
  margin: 0; padding: 10px 14px;
  font-size: 10px; font-weight: 600; letter-spacing: 0.18em;
  color: var(--txt-dim);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
}