:root {
    --primary-color: #447793;
    --primary-light: #5a8aa6;
    --primary-dark: #2d5a74;
    --card-background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    --card-border: #e8e8e8;
    --card-shadow: 0 2px 8px rgba(0,0,0,0.1);
    --text-primary: #262626;
    --text-secondary: #8c8c8c;
    --page-background: #f0f4f8;
    --success-color: #70b3a4;
    --warning-color: #faad14;
    --error-color: #d19a9a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--page-background);
}

.settings-card {
    background: var(--card-background);
    border: 1px solid var(--card-border);
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
}

.settings-card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.settings-nav-item {
    transition: all 0.2s ease;
    cursor: pointer;
}

.settings-nav-item:hover {
    background-color: #f0f4f8;
}

.settings-nav-item.active {
    background-color: #e6f7ff;
    border-right: 3px solid var(--primary-color);
    color: var(--primary-color);
}

.form-input {
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    padding: 8px 12px;
    transition: all 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(24,144,255,0.2);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-default {
    background-color: white;
    color: var(--text-primary);
    border: 1px solid #d9d9d9;
    border-radius: 6px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-default:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-danger {
    background-color: var(--error-color);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 8px 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-danger:hover {
    background-color: #ff7875;
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 22px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(22px);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
}

.status-badge.success {
    background-color: #f6ffed;
    color: var(--success-color);
    border: 1px solid #b7eb8f;
}

.status-badge.error {
    background-color: #fff2f0;
    color: var(--error-color);
    border: 1px solid #ffccc7;
}

.status-badge.warning {
    background-color: #fffbe6;
    color: var(--warning-color);
    border: 1px solid #ffe58f;
}

.settings-section {
    display: none;
}

.settings-section.active {
    display: block;
}

.loading-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}