/* Reset Dasar */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* Kunci Layar agar tidak bisa digeser/scroll */
html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

body {
    background: #3498db; /* Warna dasar biru */
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Kontainer Utama Split Screen */
.login-container {
    display: flex;
    width: 900px;
    height: 550px;
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}

/* SISI KIRI - BRANDING */
.login-sidebar {
    flex: 1;
    background: linear-gradient(135deg, #1e3799 0%, #3498db 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    padding: 40px;
    text-align: center;
}

.login-sidebar i {
    font-size: 100px;
    margin-bottom: 20px;
    text-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.login-sidebar h1 {
    font-size: 32px;
    margin-bottom: 10px;
    font-weight: 800;
}

.login-sidebar p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.6;
}

/* SISI KANAN - FORM */
.login-form-section {
    flex: 1;
    padding: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: white;
}

.login-form-section h2 {
    color: #2c3e50;
    font-size: 28px;
    margin-bottom: 10px;
}

.login-form-section p {
    color: #7f8c8d;
    margin-bottom: 30px;
    font-size: 14px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #34495e;
    font-size: 14px;
}

.input-group {
    position: relative;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #bdc3c7;
}

.input-group input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid #f1f2f6;
    border-radius: 12px;
    outline: none;
    transition: 0.3s;
    background: #f8f9fa;
}

.input-group input:focus {
    border-color: #3498db;
    background: white;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.1);
}

.btn-login {
    width: 100%;
    padding: 15px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
    margin-top: 10px;
}

.btn-login:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 128, 185, 0.3);
}

.alert {
    background: #ff7675;
    color: white;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 13px;
    text-align: center;
}

.footer-text {
    margin-top: 40px;
    text-align: center;
    font-size: 12px;
    color: #bdc3c7;
}

/* Responsif Layar HP */
@media (max-width: 800px) {
    .login-sidebar {
        display: none; /* Sembunyikan sisi biru di HP agar tidak sempit */
    }
    .login-container {
        width: 400px;
        height: auto;
        padding: 20px 0;
    }
    html, body {
        overflow: auto; /* Izinkan scroll di HP jika layar terlalu pendek */
    }
}