* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', sans-serif;
}

body {
    background: #d6dcef;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* Container */
.container {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    overflow: hidden;
    width: 900px;
    max-width: 100%;
    min-height: 500px;
    display: flex;
}

/* Form kiri */
.form-container {
    width: 50%;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.form-container h1 {
    margin-bottom: 25px;
}

.form-container input {
    background: #eee;
    border: none;
    padding: 12px 15px;
    margin: 10px 0;
    width: 100%;
    border-radius: 8px;
}

.form-container a {
    font-size: 14px;
    margin: 15px 0;
    text-decoration: none;
    color: #333;
}

.form-container button {
    border-radius: 25px;
    border: none;
    background: #46386e;
    color: #fff;
    font-size: 14px;
    padding: 12px;
    cursor: pointer;
    margin-top: 10px;
    transition: 0.3s;
}

.form-container button:hover {
    background: #4b1fd3;
}

/* Panel kanan */
.overlay-container {
    width: 50%;
    background: linear-gradient(to right, #5f2eea, #7b3fe4);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    border-top-left-radius: 150px;
    border-bottom-left-radius: 150px;
}

.overlay {
    text-align: center;
    padding: 0 40px;
}

.overlay h1 {
    font-size: 32px;
    margin-bottom: 15px;
}

.overlay p {
    font-size: 16px;
}

/* Error */
.error {
    background: #ff4d4d;
    color: #fff;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
    text-align: center;
}