/* ========= 系统设置页面样式 ========= */
.settings-page-content {
    padding: 32px;
    overflow-y: auto;
    height: 100%;
}

.settings-card {
    background: #172235;
    border-radius: 32px;
    padding: 32px;
    border: 1px solid #2d405f;
    margin-bottom: 24px;
}

.settings-card-title {
    font-size: 1.5rem;
    color: #ecf3ff;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.settings-card-title i {
    font-size: 1.8rem;
}

.settings-item {
    margin-bottom: 28px;
}

.settings-item-label {
    display: block;
    color: #b0c6f0;
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 10px;
}

.settings-input-group {
    display: flex;
    gap: 12px;
    align-items: center;
}

.settings-input {
    flex: 1;
    padding: 14px 20px;
    background: #0a1a2c;
    border: 2px solid #2d4a7a;
    border-radius: 40px;
    color: white;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s;
}

.settings-input:focus {
    border-color: #70b9ff;
    box-shadow: 0 0 0 3px #70b9ff40;
}

.settings-btn {
    background: #1b5e8c;
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 40px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 4px solid #0d3550;
}

.settings-btn:active {
    transform: translateY(4px);
    border-bottom-width: 1px;
}

.settings-help {
    margin-top: 8px;
    color: #6f8abf;
    font-size: 0.9rem;
    padding-left: 16px;
}

.settings-divider {
    height: 1px;
    background: #2d4a7a;
    margin: 32px 0;
}

.settings-info {
    background: #1a2a45;
    border-radius: 24px;
    padding: 20px;
    color: #b0c6f0;
    border-left: 6px solid #70b9ff;
    font-size: 0.95rem;
}

.settings-info strong {
    color: #70b9ff;
}

.preview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 20px;
}

.preview-item {
    background: #0a1a2c;
    border-radius: 24px;
    padding: 16px;
    border: 2px solid #2d5a9a;
}

.preview-item h4 {
    color: #b0c6f0;
    margin-bottom: 12px;
    font-size: 1rem;
}

.video-preview, .image-preview {
    width: 100%;
    border-radius: 16px;
    overflow: hidden;
    background: #000000;
    aspect-ratio: 3/4;
}

.video-preview video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}