body {
    font-family: "Segoe UI", sans-serif;
    background: #fffef8;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    padding: 40px;
    background: #fff;
    border: 1px solid #fce98b;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(255, 215, 0, 0.35);
    text-align: center;
    width: 300px;
}

.login-logo {
    width: auto;
    height: 60px;
    margin-bottom: 10px;
}

h2 {
    margin: 0 0 20px 0;
    color: #333;
}

.input-group {
    margin-bottom: 15px;
    text-align: left;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}

.input-group input {
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid #f3d97a;
    box-sizing: border-box; /* Quan trọng để padding không làm vỡ layout */
}

.login-button {
    width: 100%;
    padding: 10px;
    background: #ffde5d;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-button:hover {
    background: #ffe78c;
}

#error-message {
    margin-top: 15px;
    color: red;
    font-size: 14px;
}