.appearance-hero-section {
    margin-bottom: 25px;
    padding-top: 5px;
}

.appearance-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: #333;
    margin-bottom: 5px;
}

.appearance-desc {
    font-size: 0.95rem;
    color: #666;
}

.theme-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding-bottom: 10px;
}

.theme-option {
    cursor: pointer;
    user-select: none;
}

.theme-option input {
    display: none;
}

.theme-card {
    display: flex;
    align-items: center;
    padding: 16px 20px;
    border: 2px solid #edf2f7;
    border-radius: 16px;
    background-color: #fff;
    transition: all 0.2s;
}

.theme-option:hover .theme-card {
    border-color: #cbd5e0;
    background-color: #f8fafc;
}

.theme-option input:checked+.theme-card {
    border-color: #8b5cf6;
    background-color: #f0f4f8;
    box-shadow: none;
}

.theme-visual {
    width: 50px;
    height: 50px;
    border-radius: 10px;
    margin-right: 18px;
    overflow: hidden;
    position: relative;
    border: 1px solid #e2e8f0;
    flex-shrink: 0;
}

.light-visual {
    background-color: #f5f5f5;
}

.light-visual .tv-bar {
    background-color: #fff;
    height: 12px;
    width: 100%;
    border-bottom: 1px solid #e2e8f0;
}

.light-visual .tv-content {
    background-color: #fff;
    height: 8px;
    width: 60%;
    margin: 8px auto;
    border-radius: 4px;
}

.dark-visual {
    background-color: #1a202c;
    border-color: #2d3748;
}

.dark-visual .tv-bar {
    background-color: #2d3748;
    height: 12px;
    width: 100%;
}

.dark-visual .tv-content {
    background-color: #2d3748;
    height: 8px;
    width: 60%;
    margin: 8px auto;
    border-radius: 4px;
}

.system-visual {
    display: flex;
}

.tv-half {
    flex: 1;
    height: 100%;
}

.light-half {
    background-color: #f5f5f5;
}

.dark-half {
    background-color: #1a202c;
}

.theme-label {
    flex: 1;
    font-size: 1.1rem;
    font-weight: 700;
    color: #2d3748;
}

.theme-radio-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid #cbd5e0;
    position: relative;
    transition: all 0.2s;
}

.theme-radio-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 12px;
    height: 12px;
    background-color: #8b5cf6;
    border-radius: 50%;
    transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.theme-option input:checked+.theme-card .theme-radio-btn {
    border-color: #8b5cf6;
}

.theme-option input:checked+.theme-card .theme-radio-btn::after {
    transform: translate(-50%, -50%) scale(1);
}