/* ──────────────────────────────────────────────────────────────
   CSS Variables & Reset
────────────────────────────────────────────────────────────── */
:root {
  --bg-primary:    #0a0e1a;
  --bg-secondary:  #0f1629;
  --surface:       #1a2035;
  --surface-raised:#1e2640;
  --border:        #2a3550;
  --accent:        #6366f1;
  --accent-hover:  #4f52d6;
  --accent-glow:   rgba(99,102,241,0.15);
  --accent-light:  rgba(99,102,241,0.08);
  --text-primary:  #e2e8f0;
  --text-secondary:#94a3b8;
  --text-muted:    #64748b;
  --green:         #10b981;
  --green-bg:      rgba(16,185,129,0.10);
  --yellow:        #f59e0b;
  --yellow-bg:     rgba(245,158,11,0.10);
  --red:           #ef4444;
  --red-bg:        rgba(239,68,68,0.10);
  --blue:          #3b82f6;
  --blue-bg:       rgba(59,130,246,0.10);
  --purple:        #8b5cf6;
  --purple-bg:     rgba(139,92,246,0.10);

  --radius-sm:  4px;
  --radius-md:  8px;
  --radius-lg:  12px;
  --radius-xl:  16px;
  --radius-2xl: 24px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.5);
  --shadow-accent: 0 0 24px rgba(99,102,241,0.25);

  --font-sans:  'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --transition: 0.18s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text-primary);
}

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

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Shared Components ──────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 16px var(--accent-glow);
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-accent);
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-accent { background: var(--accent-glow); color: var(--accent); border: 1px solid rgba(99,102,241,0.3); }
.badge-green  { background: var(--green-bg);    color: var(--green);  border: 1px solid rgba(16,185,129,0.3); }
.badge-yellow { background: var(--yellow-bg);   color: var(--yellow); border: 1px solid rgba(245,158,11,0.3); }
.badge-red    { background: var(--red-bg);      color: var(--red);    border: 1px solid rgba(239,68,68,0.3); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 24px;
}

.card-glass {
  background: rgba(26,32,53,0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-xl);
}

/* ── Form elements ──────────────────────────────────────────── */
input, select, textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 9px 12px;
  width: 100%;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}
input::placeholder, textarea::placeholder { color: var(--text-muted); }

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

/* ── Utility ────────────────────────────────────────────────── */
.sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.w-full { width: 100%; }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 0.875rem; }
.font-mono { font-family: var(--font-mono); }