* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 600px;
}

.login-box, .dashboard-box {
    background: white;
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-box h1, .dashboard-box h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 28px;
}

.login-box h2, .dashboard-box h2 {
    color: #666;
    margin-bottom: 30px;
    font-size: 20px;
    font-weight: normal;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

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

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

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

.btn-primary, .btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.btn-secondary:hover {
    background: #e0e0e0;
}

.btn-link {
    background: none;
    border: none;
    color: #667eea;
    font-size: 14px;
    cursor: pointer;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 15px 0;
    transition: color 0.3s;
}

.btn-link:hover {
    color: #764ba2;
}

.toggle-icon {
    font-size: 12px;
    transition: transform 0.3s;
}

.advanced-toggle {
    text-align: center;
    margin-top: 15px;
}

.advanced-settings {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.error-message {
    background: #fee;
    color: #c33;
    padding: 12px;
    border-radius: 6px;
    margin-bottom: 20px;
    border-left: 4px solid #c33;
}

.vpn-section {
    margin-bottom: 30px;
}

.result-section {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 2px solid #f0f0f0;
}

.vpn-info {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
}

.info-item {
    margin-bottom: 15px;
    font-size: 16px;
}

.info-item:last-child {
    margin-bottom: 0;
}

.info-item strong {
    color: #333;
    display: inline-block;
    min-width: 120px;
}

.highlight {
    color: #667eea;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    font-size: 18px;
}

.error-section {
    margin-top: 20px;
}

.footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    text-align: center;
    font-size: 14px;
    color: #666;
}

.footer p {
    margin: 0;
}

.footer a {
    color: #667eea;
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: #764ba2;
    text-decoration: underline;
}