:root {
  --primary: #7c3aed;
  --primary-light: #a78bfa;
  --primary-dark: #5b21b6;
  --secondary: #06b6d4;
  --secondary-light: #67e8f9;
  --accent: #f59e0b;
  --bg: #020617;
  --bg-alt: #0f172a;
  --surface: #1e293b;
  --surface-light: #334155;
  --surface-hover: #475569;
  --border: #334155;
  --text: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --danger: #ef4444;
  --success: #10b981;
  --warning: #f59e0b;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,.4);
  --transition: 0.2s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--primary); color: white; }

::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

.gradient-text {
  background: linear-gradient(135deg, var(--primary-light), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  text-decoration: none;
  white-space: nowrap;
}

.btn:active { transform: scale(0.97); }

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 20px rgba(124,58,237,.25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 28px rgba(124,58,237,.35); }

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

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: #dc2626; }

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

.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-xs { padding: 4px 10px; font-size: 11px; border-radius: 6px; }

/* Inputs */
.input {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text);
  font-size: 14px;
  width: 100%;
  font-family: var(--font);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,58,237,.15); }
.input::placeholder { color: var(--text-muted); }

.select {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 40px 12px 16px;
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  appearance: none;
  font-family: var(--font);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: border-color var(--transition);
}
.select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124,58,237,.15); }

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

.glass {
  background: rgba(30, 41, 59, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,.06);
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .02em;
}
.badge-success { background: rgba(16,185,129,.12); color: var(--success); }
.badge-warning { background: rgba(245,158,11,.12); color: var(--warning); }
.badge-danger { background: rgba(239,68,68,.12); color: var(--danger); }
.badge-info { background: rgba(6,182,212,.12); color: var(--secondary); }

/* Spinner */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .6s linear infinite;
}
.spinner-sm { width: 14px; height: 14px; border-width: 1.5px; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(.95); } to { opacity: 1; transform: scale(1); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .5; } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

.animate-fadeIn { animation: fadeIn .3s ease forwards; }
.animate-slideUp { animation: slideUp .4s ease forwards; }
.animate-scaleIn { animation: scaleIn .2s ease forwards; }

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 24px;
  box-shadow: var(--shadow);
  z-index: 9999;
  animation: slideUp .3s ease;
  font-size: 14px;
  max-width: 90vw;
  text-align: center;
}
.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--danger); }
.toast.warning { border-color: var(--warning); }

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn .2s ease;
}
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 90%;
  max-width: 420px;
  animation: scaleIn .2s ease;
}
.modal h2 { font-size: 20px; margin-bottom: 8px; }
.modal p { color: var(--text-secondary); font-size: 14px; margin-bottom: 20px; }

/* Code blocks */
code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
}

pre {
  position: relative;
  background: var(--bg-alt) !important;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px !important;
  overflow-x: auto;
  margin: 12px 0;
}
pre code { background: none !important; padding: 0 !important; }

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  color: var(--text-secondary);
  font-size: 11px;
  cursor: pointer;
  transition: all var(--transition);
  opacity: 0;
}
pre:hover .copy-btn { opacity: 1; }
.copy-btn:hover { background: var(--surface-hover); color: var(--text); }

/* Responsive breakpoints */
@media (max-width: 768px) {
  .btn { padding: 10px 18px; font-size: 13px; }
  .input { padding: 10px 14px; font-size: 13px; }
  .select { padding: 10px 36px 10px 14px; font-size: 13px; }
  .card { padding: 16px; }
  .toast { left: 16px; right: 16px; transform: none; bottom: 16px; max-width: none; }
}

@media (max-width: 480px) {
  .modal { padding: 24px 20px; }
}