/* Settings Modal */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    z-index: var(--z-modal);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    animation: fadeIn 0.3s forwards;
}

.modal-content {
    /* 🔧 使用主题变量，确保在浅色主题下也有足够对比度 */
    background: var(--card-bg);
    /* 🔧 添加额外的边框以确保可见性 */
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    width: 480px;
    max-width: 90%;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    transform: scale(0.9);
    animation: scaleIn 0.3s forwards;
    display: flex;
    flex-direction: column;
    max-height: 80vh;
}

.modal-header {
    padding: 15px 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 18px;
    font-weight: 500;
    /* 🔧 使用主题变量，确保在所有主题下都可见 */
    color: var(--text-on-primary, #ffffff);
    font-weight: 700;
    /* 🔧 增强文字阴影以确保可读性 */
    text-shadow:
        0 1px 2px rgba(0, 0, 0, 0.3),
        0 2px 4px rgba(0, 0, 0, 0.2);
    -webkit-text-stroke: 0.5px rgba(0, 0, 0, 0.2);
}

.modal-header .icon-btn {
    background: none;
    border: none;
    color: white;
    font-size: 20px;
    cursor: pointer;
    padding: 5px;
    border-radius: 50%;
    transition: background 0.2s;
}

.modal-header .icon-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    /* 🔧 确保文字颜色在浅色背景下可见 */
    color: var(--text-main);
}

/* Settings modal scrollbar styling */
.modal-body::-webkit-scrollbar {
    width: 8px;
}

.modal-body::-webkit-scrollbar-track {
    background: var(--card-hover-bg);
    border-radius: 10px;
}

.modal-body::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    opacity: 0.7;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
}


.setting-group {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 15px;
}

.setting-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.setting-group h3 {
    margin: 0 0 15px 0;
    font-size: 14px;
    /* 🔧 使用主题变量，确保在所有主题下可见 */
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.setting-item {
    margin-bottom: 15px;
}

.setting-item label {
    display: block;
    margin-bottom: 5px;
    font-size: 14px;
    /* 🔧 使用主题变量，确保文字可见性 */
    color: var(--text-main);
    font-weight: 500;
    display: flex;
    justify-content: space-between;
}

.setting-item input[type="range"],
#settings-modal input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    height: 4px;
    background: var(--card-hover-bg);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    margin-top: 5px;
    box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.08);
}

.setting-item input[type="range"]::-webkit-slider-thumb,
#settings-modal input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    box-shadow: 0 0 10px var(--primary-color);
    opacity: 0.8;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.setting-item input[type="range"]::-webkit-slider-thumb:hover,
#settings-modal input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 14px var(--primary-color);
    opacity: 0.9;
}

.setting-item input[type="range"]::-moz-range-track,
#settings-modal input[type="range"]::-moz-range-track {
    height: 4px;
    background: var(--card-hover-bg);
    border-radius: 2px;
    box-shadow: inset 0 1px 4px rgba(0, 0, 0, 0.08);
}

.setting-item input[type="range"]::-moz-range-thumb,
#settings-modal input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--primary-color);
    box-shadow: 0 0 10px var(--primary-color);
    opacity: 0.8;
    border: 2px solid rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.2s ease;
}

.setting-item input[type="range"]::-moz-range-thumb:hover,
#settings-modal input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 14px var(--primary-color);
    opacity: 0.9;
}


/* Layout buttons inside settings */
#settings-modal .setting-item button {
    background: var(--card-bg);
    border: 1px solid var(--primary-color);
    border-radius: 12px;
    color: var(--primary-color);
    padding: 8px 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

#settings-modal .setting-item button:hover {
    background: var(--card-hover-bg);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.setting-item input[type="text"] {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--card-border);
    border-radius: 5px;
    font-family: inherit;
    box-sizing: border-box;
    background: var(--card-bg);
    color: var(--text-main);
}

.setting-item input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-row input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.checkbox-row label {
    margin-bottom: 0;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

@keyframes scaleIn {
    to { transform: scale(1); }
}