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

:root {
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --green: #16a34a;
  --green-dark: #15803d;
  --red: #dc2626;
  --orange: #ea580c;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-700: #334155;
  --gray-900: #0f172a;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
}

html { font-size: 16px; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; color: var(--gray-900); background: var(--gray-50); line-height: 1.5; }

.hidden { display: none !important; }

.card {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}
.card-title { font-size: 1rem; font-weight: 700; color: var(--gray-700); margin-bottom: 16px; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-header .card-title { margin-bottom: 0; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 18px; border-radius: 8px; border: none;
  font-size: .9rem; font-weight: 600; cursor: pointer;
  transition: background .15s, transform .1s, opacity .15s;
  text-decoration: none;
}
.btn:active { transform: scale(.97); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--blue-dark); }
.btn-success { background: var(--green); color: #fff; }
.btn-success:hover:not(:disabled) { background: var(--green-dark); }
.btn-outline { background: transparent; color: var(--gray-700); border: 1.5px solid var(--gray-200); }
.btn-outline:hover:not(:disabled) { background: var(--gray-100); }
.btn-lg { width: 100%; justify-content: center; padding: 14px; font-size: 1rem; border-radius: var(--radius); }
.btn-sm { padding: 6px 12px; font-size: .8rem; }

.step-label {
  font-size: .72rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--blue); margin-bottom: 14px;
}

.field-group { margin-bottom: 16px; }
.field-group label { display: block; font-size: .85rem; font-weight: 600; color: var(--gray-700); margin-bottom: 6px; }
.field-group input[type=text] {
  width: 100%; padding: 10px 14px; border: 1.5px solid var(--gray-200);
  border-radius: 8px; font-size: .95rem; color: var(--gray-900);
  transition: border-color .15s;
  outline: none;
}
.field-group input[type=text]:focus { border-color: var(--blue); }
.field-hint { font-size: .78rem; color: var(--gray-400); margin-top: 4px; }
.required { color: var(--red); }

.spinner {
  width: 16px; height: 16px;
  border: 2px solid var(--gray-200); border-top-color: var(--blue);
  border-radius: 50%; animation: spin .6s linear infinite; flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }

.empty-state { color: var(--gray-400); font-size: .9rem; text-align: center; padding: 24px 0; }