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

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 900px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    display: flex;
}

.left-panel {
    flex: 1;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.left-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: cover;
}

.welcome-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.welcome-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    border: 3px solid rgba(255, 255, 255, 0.3);
}

.welcome-icon img {
    width: 100%;
    object-fit: contain;
}

.welcome-text h1 {
    font-size: 32px;
    margin-bottom: 8px;
    font-weight: 600;
    text-align: left;
}

.welcome-text p {
    opacity: 0.9;
    font-size: 16px;
    text-align: left;
}

.features-list {
    position: relative;
    z-index: 1;
    text-align: left;
    margin-top: 30px;
}

.features-list h3 {
    font-size: 18px;
    margin-bottom: 15px;
    font-weight: 500;
}

.features-list ul {
    list-style: none;
}

.features-list li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.features-list li i {
    color: #10b981;
    font-size: 16px;
}

.right-panel {
    flex: 1;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-form {
    width: 100%;
}

.form-title {
    color: #2c3e50;
    font-size: 24px;
    margin-bottom: 25px;
    font-weight: 600;
    text-align: center;
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
    font-size: 14px;
}

.input-with-icon {
    position: relative;
}

.input-with-icon i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #6b7280;
}

.form-control {
    width: 100%;
    padding: 14px 14px 14px 45px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #4f46e5;
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.error-message {
    color: #ef4444;
    font-size: 13px;
    margin-top: 5px;
    display: none;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #6b7280;
    cursor: pointer;
    font-size: 18px;
}

.validation-rules {
    background: #f9fafb;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 25px;
    border-left: 4px solid #4f46e5;
}

.validation-rules h3 {
    font-size: 14px;
    margin-bottom: 10px;
    color: #4f46e5;
}

.validation-rules ul {
    padding-left: 20px;
    font-size: 13px;
    color: #6b7280;
}

.validation-rules li {
    margin-bottom: 5px;
}

.btn-login {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(79, 70, 229, 0.3);
}

.btn-login:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.register-link {
    text-align: center;
    margin-top: 20px;
    font-size: 14px;
    color: #6b7280;
}

.register-link a {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 500;
}

.register-link a:hover {
    text-decoration: underline;
}

/* Animasi untuk pesan error */
.shake {
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    10%,
    30%,
    50%,
    70%,
    90% {
        transform: translateX(-5px);
    }

    20%,
    40%,
    60%,
    80% {
        transform: translateX(5px);
    }
}

/* Responsif */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
        max-width: 95%;
    }

    .left-panel {
        padding: 30px 20px;
    }

    .right-panel {
        padding: 30px 20px;
    }

    .welcome-header {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .welcome-text h1,
    .welcome-text p {
        text-align: center;
    }

    .features-list {
        text-align: center;
    }

    .welcome-icon {
        width: 70px;
        height: 70px;
        font-size: 30px;
    }
}