/* --- 下载页: 页面布局 --- */
.download-page-wrapper {
    padding: 60px 0;
}

.download-header {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 30px;
}

.download-icon-wrapper {
    width: 40px;
    height: 40px;
    background-color: var(--secondary-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

    .download-icon-wrapper svg {
        width: 24px;
        height: 24px;
    }

.download-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--headline-color);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.download-subtitle {
    font-size: 1.2rem;
    color: var(--text-color);
    max-width: 600px;
    margin-bottom: 40px;
}

.link-donation {
    font-weight: bold;
    text-decoration: underline;
    text-decoration-color: rgba(0, 123, 255, 0.5);
    transition: color 0.2s;
}

    .link-donation:hover {
        color: var(--headline-color);
    }


.loading-text, .error-text {
    font-size: 1.2rem;
    color: var(--text-color);
    padding: 40px 0;
    text-align: center;
}

.error-text {
    color: #ff5f56;
}

/* --- 下载区并列布局 --- */
.download-area {
    display: flex;
    align-items: flex-start;
    gap: 60px;
}

.download-info-area {
    flex: 1;
    min-width: 0;
}

.download-selector-area {
    flex: 0 0 400px;
    padding-top: 20px;
}

.loader-icon {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}


/* --- FFmpeg 下载模块样式 --- */
.ffmpeg-download-box {
    margin-top: 50px;
    padding: 20px;
    background-color: var(--secondary-color);
    border-radius: 12px;
}

.ffmpeg-download-text {
    font-size: 0.9rem;
    color: #a0a0a0;
    margin-bottom: 8px;
}

    .ffmpeg-download-text:last-of-type {
        margin-bottom: 15px;
    }

.btn-ffmpeg {
    background-color: transparent;
    border: 2px solid #444;
    color: var(--text-color);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    font-size: 0.95rem;
}

    .btn-ffmpeg:hover {
        background-color: #333;
        border-color: #555;
    }

    .btn-ffmpeg svg {
        width: 20px;
        height: 20px;
    }


/* --- 版本选择器面板 --- */
.selector-panel {
    background-color: #1a1a1a;
    border: 1px solid #2a2a2a;
    border-radius: 12px;
    padding: 25px 30px;
}

.selector-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--headline-color);
    margin-bottom: 25px;
}

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

.selector-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: #b0b0b0;
    margin-bottom: 10px;
}

.option-toggle-group {
    display: flex;
    background-color: #101010;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid #333;
}

.option-toggle {
    flex: 1;
    padding: 10px 15px;
    background-color: transparent;
    color: var(--text-color);
    border: none;
    border-right: 1px solid #333;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

    .option-toggle:last-child {
        border-right: none;
    }

    .option-toggle:not(.active):not(:disabled):hover {
        background-color: #282828;
    }

    .option-toggle.active {
        background-color: var(--primary-color);
        color: white;
    }

    .option-toggle:disabled,
    .option-toggle.loading {
        background-color: #252525;
        color: #888;
        cursor: not-allowed;
    }

    .option-toggle.unavailable {
        background-color: #2a2222;
        border: 1px solid #7c2d2d;
        color: #ff5f56;
        cursor: not-allowed;
        font-weight: bold;
    }


.btn-confirm-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    margin-top: 25px;
    padding: 15px 20px;
    background-color: #28a745;
    color: white;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    transition: all 0.3s ease;
}

    .btn-confirm-download:hover {
        background-color: #218838;
        transform: translateY(-2px);
    }

    .btn-confirm-download.disabled {
        background-color: #555;
        cursor: not-allowed;
        transform: none;
    }

        .btn-confirm-download.disabled:hover {
            background-color: #555;
        }

    .btn-confirm-download svg,
    .btn-confirm-download .loader-icon {
        width: 22px;
        height: 22px;
    }

.os-requirement {
    font-size: 0.8rem;
    color: #888;
    text-align: center;
    margin-top: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

/* --- 下载区响应式设计 --- */
@media (max-width: 992px) {
    .download-area {
        flex-direction: column;
        align-items: stretch;
        gap: 40px;
    }

    .download-selector-area {
        flex: 1;
        padding-top: 0;
    }

    .download-info-area,
    .ffmpeg-download-box {
        text-align: center;
    }

    .download-subtitle, .ffmpeg-download-box {
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 768px) {
    .download-title {
        font-size: 2.8rem;
    }
}

/* --- 镜像下载提示弹窗样式 --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

    .modal-overlay.show {
        opacity: 1;
        visibility: visible;
    }

.modal-content {
    background-color: var(--secondary-color);
    padding: 30px 40px;
    border-radius: 12px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    position: relative;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: scale(1);
}

.modal-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    color: #888;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
}

    .modal-close-btn:hover {
        color: #fff;
    }

.modal-content h3 {
    color: var(--headline-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--text-color);
    margin-bottom: 2rem;
    line-height: 1.7;
}

/* --- **新增**: 用于设置文字为主题蓝色的工具类 --- */
.modal-content .text-primary {
    color: var(--primary-color);
    font-weight: 600; /* 让蓝色文字稍微加粗以突出显示 */
}