/* LIBCODE Auth UI — same design system as dashboard */
:root {
  --bg: #0a0a0f;
  --bg-elev: #11111a;
  --surface: #161624;
  --surface-2: #1f1f30;
  --border: #2a2a3e;
  --border-strong: #3a3a55;
  --text: #f5f5fa;
  --text-muted: #a0a0b8;
  --text-subtle: #6f6f8c;
  --primary: #7c5cff;
  --primary-hover: #6a48f0;
  --primary-light: #a39bff;
  --primary-glow: rgba(124, 92, 255, 0.4);
  --success: #10b981;
  --danger: #ef4444;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-feature-settings: 'cv11', 'ss01'; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow: hidden;
}
/* Ambient gradient */
body::before {
  content: '';
  position: fixed; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, var(--primary-glow), transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(59,130,246,.18), transparent 50%);
  z-index: 0;
}
.card {
  background: rgba(22, 22, 36, 0.6);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 20px;
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  position: relative;
  z-index: 1;
  box-shadow: 0 24px 60px rgba(0,0,0,0.5);
}
.card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.2), transparent);
  border-radius: 20px 20px 0 0;
}
.logo {
  font-size: 2rem; font-weight: 800;
  text-align: center; margin-bottom: 0.3rem;
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}
.form-group { margin-bottom: 1.2rem; }
.form-group label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-group input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  outline: none;
  transition: all 0.15s ease;
}
.form-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}
.btn {
  width: 100%;
  padding: 0.85rem;
  background: linear-gradient(135deg, var(--primary), var(--primary-hover));
  border: none;
  border-radius: 10px;
  color: white;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
  box-shadow: 0 4px 16px var(--primary-glow);
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px var(--primary-glow);
}
.btn:active { transform: translateY(0); }
.msg {
  text-align: center;
  font-size: 0.85rem;
  margin-top: 1rem;
  padding: 0.7rem;
  border-radius: 10px;
  display: none;
  font-weight: 500;
}
.msg.error { display: block; background: rgba(239, 68, 68, 0.15); color: var(--danger); border: 1px solid rgba(239,68,68,0.2); }
.msg.success { display: block; background: rgba(16, 185, 129, 0.15); color: var(--success); border: 1px solid rgba(16,185,129,0.2); }