:root{--rti-purple:#492366;--rti-purple-dark:#3a1c52;--rti-accent:#fc0;--primary-color:#492366;--primary-hover:#3a1c52;--secondary-color:#64748b;--success-color:#10b981;--warning-color:#f59e0b;--error-color:#ef4444;--bg-color:#f1f5f9;--card-bg:#fff;--text-color:#1e293b;--text-muted:#64748b;--border-color:#e2e8f0;--shadow-sm:0 1px 3px #3a1c5212, 0 1px 2px #3a1c520a;--shadow-md:0 4px 12px #3a1c5217, 0 2px 4px #3a1c520d;--shadow-lg:0 10px 28px #3a1c521c, 0 4px 8px #3a1c520f;--shadow-xl:0 20px 48px #3a1c5226, 0 8px 16px #3a1c5214}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%}body{background-color:var(--bg-color);color:var(--text-color);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.6}button{cursor:pointer;font-family:inherit}input,textarea,select{font-family:inherit}.btn-primary{background:linear-gradient(135deg, var(--primary-color) 0%, var(--primary-hover) 100%);color:#fff;border:none;border-radius:8px;padding:10px 20px;font-size:.95rem;font-weight:600;transition:box-shadow .15s,transform .1s;box-shadow:0 2px 8px #49236647,0 1px 2px #49236629}.btn-primary:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 14px #4923665c,0 2px 4px #49236633}.btn-primary:active:not(:disabled){box-shadow:var(--shadow-sm);transform:translateY(0)}.btn-primary:disabled{background:var(--secondary-color);cursor:not-allowed;opacity:.6;box-shadow:none}.btn-secondary{color:var(--text-color);border:1px solid var(--border-color);box-shadow:var(--shadow-sm);background:#fff;border-radius:8px;padding:8px 16px;font-size:.9rem;font-weight:500;transition:box-shadow .15s,border-color .15s,transform .1s}.btn-secondary:hover:not(:disabled){box-shadow:var(--shadow-md);border-color:#cbd5e1;transform:translateY(-1px)}.btn-secondary:active:not(:disabled){transform:translateY(0)}.btn-danger{background:linear-gradient(135deg, var(--error-color) 0%, #dc2626 100%);color:#fff;border:none;border-radius:8px;padding:8px 16px;font-size:.9rem;font-weight:600;transition:box-shadow .15s,transform .1s;box-shadow:0 2px 8px #ef444440}.btn-danger:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 4px 12px #ef444459}.btn-danger:active:not(:disabled){transform:translateY(0)}.card{background:var(--card-bg);border:1px solid var(--border-color);box-shadow:var(--shadow-md);border-radius:14px;padding:20px}.spinner{border:3px solid var(--border-color);border-top:3px solid var(--primary-color);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-banner{color:var(--error-color);background:#fef2f2;border:1px solid #fecaca;border-radius:10px;padding:10px 14px;font-size:.9rem;box-shadow:0 1px 4px #ef444414}.success-banner{color:#166534;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:10px;padding:10px 14px;font-size:.9rem;box-shadow:0 1px 4px #10b98114}