*{margin:0;padding:0;box-sizing:border-box;font-family:Segoe UI,sans-serif}body{background:linear-gradient(135deg,#0f172a,#1e293b);color:#f1f5f9;min-height:100vh}.auth-page{display:flex;justify-content:center;align-items:center;height:100vh}.auth-card{width:380px;padding:35px;background:#1e293be6;border-radius:16px;box-shadow:0 10px 40px #0006;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.auth-title{margin-bottom:8px;font-size:22px}.auth-subtitle{margin-bottom:20px;font-size:14px;color:#94a3b8}.auth-input,.auth-select{width:100%;padding:12px;margin-bottom:18px;background:#334155;border:none;border-radius:8px;color:#fff}.auth-button{width:100%;padding:12px;border-radius:8px;border:none;background:#3b82f6;color:#fff;font-weight:500;cursor:pointer;transition:.3s ease}.auth-button:hover{background:#2563eb;transform:translateY(-2px)}.auth-error{color:#ef4444;margin-bottom:10px;font-size:14px}.dashboard-page{padding:40px}.dashboard-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.dashboard-title{font-size:24px}.dashboard-user{display:flex;align-items:center}.logout-button{padding:8px 14px;background:#e73e3e;border:none;border-radius:8px;color:#fff;cursor:pointer;transition:.3s ease}.logout-button:hover{background:#dc2626}.converter-card{max-width:500px;margin:auto;padding:30px;background:#1e293be6;border-radius:16px;box-shadow:0 10px 40px #0006;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.converter-label{font-size:14px;margin-bottom:6px;display:block}.converter-input,.converter-select{width:100%;padding:12px;margin-bottom:18px;background:#334155;border:none;border-radius:8px;color:#fff}.swap-button{width:100%;padding:12px;margin-bottom:15px;background:#6366f1;border:none;border-radius:8px;color:#fff;cursor:pointer;transition:.3s ease}.swap-button:hover{background:#4f46e5}.converter-result{margin-top:10px;font-size:18px;font-weight:500}