/* Reset dan Global Styles */
* {
    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;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

/* Header dan Navigasi */
.header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-weight: bold;
    margin-left: 20px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: #4CAF50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    gap: 30px;
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.nav-item {
    color: white;
    text-decoration: none;
    font-size: 14px;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.nav-item:hover {
    opacity: 1;
}

.nav-item.active {
    opacity: 1;
    font-weight: 500;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-right: 20px;
}

.social-icon {
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-icon:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Form Container */
.auth-container {
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 400px;
    margin-top: 80px;
}

.auth-header {
    text-align: center;
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 30px;
}

.auth-subtitle {
    text-align: center;
    font-size: 14px;
    color: #636e72;
    margin-top: -20px;
    margin-bottom: 30px;
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #2d3436;
    font-size: 14px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    background: #f8f9fa;
}

.form-input:focus {
    outline: none;
    border-color: #667eea;
    background: white;
}

.form-input::placeholder {
    color: #adb5bd;
}

.auth-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-bottom: 20px;
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
}

.auth-btn:active {
    transform: translateY(0);
}

.form-footer {
    text-align: center;
    font-size: 14px;
    color: #666;
}

.form-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

.form-footer a:hover {
    text-decoration: underline;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    font-size: 14px;
}

.checkbox-container {
    display: flex;
    align-items: center;
}

.checkbox-container input {
    margin-right: 8px;
}

/* Alert and Validation */
.alert {
    background-color: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid #f5c6cb;
}

.error-message {
    color: #e17055;
    font-size: 13px;
    margin-top: 5px;
}

/* Contact Info Box */
.contact-info {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 12px;
    margin-top: 30px;
    width: 100%;
    max-width: 400px;
    backdrop-filter: blur(10px);
}

.contact-title {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 15px;
}

.contact-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
}

.contact-label {
    color: #666;
}

.contact-value {
    color: #333;
    font-weight: 500;
}

/* Responsive Styling */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 20px;
        position: relative;
        padding-bottom: 40px;
    }

    .nav-menu {
        order: 2;
        position: relative;
        top: 0;
        left: 0;
        transform: none;
        justify-content: center;
        width: 100%;
        margin: 15px 0;
    }

    .social-icons {
        order: 3;
        margin-right: 0;
    }

    .auth-container {
        margin-top: 140px;
    }
}

@media (max-width: 480px) {
    .auth-container, .contact-info {
        padding: 25px;
    }
}