body {
    background: #f5f7fa;
    font-family: Arial;
    margin: 0;
}

.top-bar {
    background: #1e73be;
    color: white;
    padding: 14px;
    display: flex;
    justify-content: space-between;
}

.panel {
    background: white;
    width: 80%;
    margin: 30px auto;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.btn {
    padding: 12px 22px;
    margin-right: 10px;
    border: none;
    border-radius: 6px;
    color: white;
    cursor: pointer;
    font-size: 14px;
}

.btn.blue { background: #2980b9; }
.btn.green { background: #27ae60; }
.btn.orange { background: #f39c12; }

.result {
    margin-top: 20px;
    padding: 15px;
    background: #eef1f5;
    border-radius: 6px;
}

.login-box {
    width: 300px;
    margin: 120px auto;
    padding: 30px;
    background: white;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}
.login-box input {
    width: 100%;
    padding: 10px;
    margin-top: 12px;
}
.login-box button {
    width: 100%;
    padding: 12px;
    margin-top: 20px;
    background: #1e73be;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.log-box {
    background: #111;
    color: #0f0;
    padding: 15px;
    width: 90%;
    margin: 25px auto;
    border-radius: 8px;
    white-space: pre-wrap;
}