:root{--brand-gradient-start: #667eea;--brand-gradient-end: #764ba2;--button-bg: #4f46e5;--button-bg-hover: #4338ca;--primary-50: #f5f3ff;--primary-100: #ede9fe;--primary-500: #667eea;--primary-600: #764ba2;--primary-700: #553c9a;--text-primary: #1a202c;--text-secondary: #718096;--text-muted: #64748b;--surface: #ffffff;--surface-muted: #f7fafc;--border: #e2e8f0;--color-error: #e53e3e;--price-accent: #000000;--gradient-brand: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--gradient-button: linear-gradient(135deg, #4f46e5 0%, #4338ca 100%);--focus-ring: 0 0 0 3px rgba(102, 126, 234, .35)}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--text-primary);background:var(--surface)}.btn-primary{display:inline-flex;align-items:center;justify-content:center;width:100%;padding:.75rem 1rem;border:none;border-radius:10px;background:var(--gradient-button);color:#fff;font-size:1rem;font-weight:700;cursor:pointer;box-shadow:0 4px 12px #4f46e540;transition:transform .15s ease,box-shadow .15s ease}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 18px #4f46e54d}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.brand-shell{min-height:100vh;display:grid;place-items:center;padding:1.25rem;background:var(--gradient-brand)}.brand-card{width:min(100%,420px);background:var(--surface);border-radius:16px;padding:1.75rem 1.5rem;box-shadow:0 20px 50px #0f172a2e}.brand-card__logo{display:flex;justify-content:center;margin-bottom:1rem}.brand-card__title{margin:0;font-size:1.35rem;font-weight:700;color:var(--primary-700);text-align:center}.brand-card__subtitle{margin:.35rem 0 1.25rem;color:var(--text-secondary);font-size:.95rem;text-align:center}.form-field{display:block;margin-bottom:1rem;font-weight:600;font-size:.9rem;color:var(--text-primary)}.form-field span{display:block;margin-bottom:.35rem}.form-field input{width:100%;padding:.65rem .75rem;border:1px solid var(--border);border-radius:10px;font-size:1rem;color:var(--text-primary);background:#fff}.form-field input:focus{outline:none;border-color:var(--primary-500);box-shadow:var(--focus-ring)}.form-error{margin:0 0 1rem;color:var(--color-error);font-size:.9rem}