/* 下载管理器样式 - Chrome 风格 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-bg: #fff;
    --color-text: #202124;

    --color-toolbar-bg: #fff;
    --color-toolbar-border: #dadce0;

    --color-input-bg: #efefef;
    --color-input-text: #202124;
    --color-input-placeholder: #5f6368;
    --color-input-focus-border: #1a73e8;
    --color-input-focus-ring: rgba(26, 115, 232, .2);

    --color-action-btn-bg: #fff;
    --color-action-btn-border: #dadce0;
    --color-action-btn-text: #1a73e8;
    --color-action-btn-hover-bg: #f8f9fa;
    --color-action-btn-hover-border: #c8c9ca;
    --color-action-btn-danger-text: #d93025;
    --color-action-btn-danger-hover-bg: #fce8e6;

    --color-icon-btn: #5f6368;
    --color-icon-btn-hover-bg: #f8f9fa;
    --color-icon-btn-hover-color: #202124;
    --color-icon-btn-danger: #d93025;
    --color-icon-btn-danger-hover-bg: #fce8e6;
    --color-icon-btn-danger-hover-color: #d93025;

    --color-content-bg: #fff;
    --color-task-item-bg: #fff;
    --color-task-item-border: #e8eaed;
    --color-task-item-hover-bg: #f8f9fa;
    --color-task-name: #202124;
    --color-task-name-clickable: #1a73e8;

    --color-progress-bar: #e8eaed;
    --color-progress-fill: #1a73e8;
    --color-progress-text: #5f6368;
    --color-task-meta: #5f6368;
    --color-speed: #1a73e8;

    --color-empty-state: #5f6368;
    --color-empty-text: #5f6368;
    --color-state-completed-bg: #e8f5e8;
    --color-state-completed-text: #137333;
    --color-state-failed-bg: #fce8e6;
    --color-state-failed-text: #d93025;
    --color-state-cancelled-bg: #e8eaed;
    --color-state-cancelled-text: #5f6368;
    --color-state-paused-bg: #fff3e0;
    --color-state-paused-text: #f57c00;

    --scrollbar-thumb: rgba(0, 0, 0, 0.2);
    --scrollbar-thumb-hover: rgba(0, 0, 0, 0.3);
}

.dark {
    --color-bg: #202124;
    --color-text: #e8eaed;

    --color-toolbar-bg: #2d2e30;
    --color-toolbar-border: #3c4043;

    --color-input-bg: #282828;
    --color-input-text: #e8eaed;
    --color-input-placeholder: #9aa0a6;
    --color-input-focus-border: #8ab4f8;
    --color-input-focus-ring: rgba(138, 180, 248, .12);

    --color-action-btn-bg: #2d2e30;
    --color-action-btn-border: #5f6368;
    --color-action-btn-text: #8ab4f8;
    --color-action-btn-hover-bg: #35363a;
    --color-action-btn-hover-border: #70757a;
    --color-action-btn-danger-text: #f28b82;
    --color-action-btn-danger-hover-bg: #35363a;

    --color-icon-btn: #9aa0a6;
    --color-icon-btn-hover-bg: #35363a;
    --color-icon-btn-hover-color: #e8eaed;
    --color-icon-btn-danger: #f28b82;
    --color-icon-btn-danger-hover-bg: #3d1a1a;
    --color-icon-btn-danger-hover-color: #f28b82;

    --color-content-bg: #2d2e30;
    --color-task-item-bg: #2d2e30;
    --color-task-item-border: #3c4043;
    --color-task-item-hover-bg: #35363a;
    --color-task-name: #e8eaed;
    --color-task-name-clickable: #8ab4f8;

    --color-progress-bar: #3c4043;
    --color-progress-fill: #8ab4f8;
    --color-progress-text: #9aa0a6;
    --color-task-meta: #9aa0a6;
    --color-speed: #8ab4f8;

    --color-empty-state: #9aa0a6;
    --color-empty-text: #9aa0a6;
    --color-state-completed-bg: #1e3a1e;
    --color-state-completed-text: #81c995;
    --color-state-failed-bg: #3d1a1a;
    --color-state-failed-text: #f28b82;
    --color-state-cancelled-bg: #3c4043;
    --color-state-cancelled-text: #9aa0a6;
    --color-state-paused-bg: #522f2f;
    --color-state-paused-text: #f57c00;

    --scrollbar-thumb: rgba(255, 255, 255, 0.2);
    --scrollbar-thumb-hover: rgba(255, 255, 255, 0.3);

    body {
        color-scheme: dark;
    }
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    font-size: 13px;
    overflow: hidden;
}

.download-manager {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* 工具栏 */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 32px;
    padding: 0 24px;
    background: var(--color-toolbar-bg);
    border-bottom: 1px solid var(--color-toolbar-border);
    flex-shrink: 0;
}

.search {
    flex: 1;
    padding: 8px 0;
}

.search-input {
    width: 100%;
    max-width: 380px;
    height: 32px;
    padding: 0 12px 0 32px;
    border: 0;
    border-radius: 6px;
    margin: 1px 0;
    font-size: 13px;
    outline: none;
    color: var(--color-input-text);
    background: var(--color-input-bg) url('data:image/svg+xml;utf8,<svg xmlns=\"http://www.w3.org/2000/svg\" width=\"20\" height=\"20\" viewBox=\"0 0 24 24\" fill=\"%235f6368\"><path d=\"M15.5 14h-.79l-.28-.27A6.471 6.471 0 0 0 16 9.5 6.5 6.5 0 1 0 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z\"/></svg>') no-repeat 8px center;
    background-size: 18px 18px;
    transition: all 0.3s;
}

.search-input::placeholder {
    color: var(--color-input-placeholder);
}

.search-input:focus {
    border-color: var(--color-input-focus-border);
    box-shadow: 0 0 0 2px var(--color-input-focus-ring);
}

.actions {
    display: flex;
    gap: 10px;
}

.action-btn {
    padding: 6px 12px;
    border: 1px solid var(--color-action-btn-border);
    background: var(--color-action-btn-bg);
    cursor: pointer;
    border-radius: 4px;
    font-size: 12px;
    color: var(--color-action-btn-text);
    transition: all 0.15s;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.action-btn:hover:not(:disabled) {
    background: var(--color-action-btn-hover-bg);
    border-color: var(--color-action-btn-hover-border);
}

.action-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
}

.action-btn.small {
    padding: 4px 8px;
    font-size: 11px;
}

.action-btn.danger {
    color: var(--color-action-btn-danger-text);
}

.action-btn.danger:hover:not(:disabled) {
    background: var(--color-action-btn-danger-hover-bg);
}

/* 图标按钮样式 */
.icon-btn {
    padding: 6px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 4px;
    color: var(--color-icon-btn);
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.icon-btn:hover {
    background: var(--color-icon-btn-hover-bg);
    color: var(--color-icon-btn-hover-color);
}

.icon-btn.danger {
    color: var(--color-icon-btn-danger);
}

.icon-btn.danger:hover {
    background: var(--color-icon-btn-danger-hover-bg);
    color: var(--color-icon-btn-danger-hover-color);
}

/* 内容区 */
.content {
    flex: 1;
    overflow: hidden;
    background: var(--color-content-bg);
}

.tab-content {
    height: 100%;
    overflow-y: auto;
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 48px 24px;
    color: var(--color-empty-state);
    text-align: center;
}

.empty-icon {
    margin-bottom: 20px;
    opacity: 0.6;
}

.empty-text {
    font-size: 14px;
    color: var(--color-empty-text);
}

/* 骨架屏样式 */
.skeleton-item {
    opacity: 0.7;
}

.skeleton-item:last-child {
    border-bottom: none;
}

/* 骨架元素基础动画 */
@keyframes skeleton-shimmer {
    0% {
        background-position: -200px 0;
    }
    100% {
        background-position: calc(200px + 100%) 0;
    }
}

.skeleton-file-icon,
.skeleton-name,
.skeleton-size,
.skeleton-time,
.skeleton-status,
.skeleton-btn {
    background: linear-gradient(90deg, var(--color-task-item-border) 25%, var(--color-task-item-hover-bg) 50%, var(--color-task-item-border) 75%);
    background-size: 200px 100%;
    animation: skeleton-shimmer 1.5s infinite linear;
    border-radius: 4px;
}

/* 骨架文件图标 */
.skeleton-file-icon {
    width: 32px;
    height: 32px;
    margin: 0 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 骨架文件名 */
.skeleton-name {
    height: 13px;
    width: 60%;
    margin: 4px 0 6px;
    max-width: 200px;
}

/* 骨架元信息 */
.skeleton-size {
    height: 12px;
    width: 80px;
}

.skeleton-time {
    height: 12px;
    width: 100px;
}

.skeleton-status {
    height: 12px;
    width: 60px;
    padding: 2px 8px;
    border-radius: 12px;
}

/* 骨架操作按钮 */
.skeleton-btn {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    margin-right: 8px;
}

/* 任务列表 */
.task-list {
    padding: 0;
}

.task-item {
    display: flex;
    align-items: center;
    height: 72px;
    padding: 0 24px;
    background: var(--color-task-item-bg);
    border-bottom: 1px solid var(--color-task-item-border);
    transition: background-color 0.15s;
    position: relative;
    overflow: hidden;
}

.task-item > * {
    position: relative;
    z-index: 1;
}

.task-item:hover {
    background: var(--color-task-item-hover-bg);
}

.task-item:last-child {
    border-bottom: none;
}

/* 整块背景进度条（下载中样式） */
.task-item.progressing-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--progress, 0%);
    background: var(--color-progress-fill);
    opacity: 0.12;
    pointer-events: none;
    transition: width 0.3s ease;
    z-index: 0;
}

.task-icon {
    margin-right: 16px;
    flex-shrink: 0;
}

.file-icon {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-icon svg {
    width: 28px;
    height: 28px;
}

.task-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-width: 0;
}

.task-name {
    min-width: 0;
    width: auto;
    font-weight: 400;
    font-size: 13px;
    color: var(--color-task-name);
}

.task-name-clickable {
    display: inline-block;
    cursor: pointer;
    color: var(--color-task-name-clickable);
    text-decoration: none;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-name-clickable:hover {
    text-decoration: underline;
}

.task-progress {
    margin-bottom: 4px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--color-progress-bar);
    border-radius: 2px;
    margin-bottom: 6px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-progress-fill);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 11px;
    color: var(--color-progress-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.speed {
    display: flex;
    align-items: center;
    color: var(--color-speed);
    font-weight: 400;
}

.task-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 20px;
    font-size: 12px;
    color: var(--color-task-meta);
}

.task-meta > span {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.state {
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 400;
}

.state.completed {
    background: var(--color-state-completed-bg);
    color: var(--color-state-completed-text);
}

.state.cancelled {
    background: var(--color-state-cancelled-bg);
    color: var(--color-state-cancelled-text);
}

.state.interrupted {
    background: var(--color-state-failed-bg);
    color: var(--color-state-failed-text);
}

.state.paused {
    background: var(--color-state-paused-bg);
    color: var(--color-state-paused-text);
}

.task-actions {
    display: flex;
    gap: 12px;
    margin-left: 16px;
    flex-shrink: 0;
}


/* 平台特定样式 */
body.darwin {
    font-family: -apple-system, BlinkMacSystemFont, sans-serif;
}

body.win32 {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* 滚动条样式 */
.tab-content::-webkit-scrollbar {
    width: 8px;
}

.tab-content::-webkit-scrollbar-track {
    background: transparent;
}

.tab-content::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

.tab-content::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* 深色模式通过 .dark 类启用变量，不再依赖系统配色偏好 */

/* Toast 提示框样式 */
.toast {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 20px;
    z-index: 1000;
    animation: toast-slide-up 0.3s ease-out;
    display: flex;
    justify-content: center;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 16px;
    background: #323232;
    color: #fff;
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    font-size: 13px;
    min-width: 200px;
    max-width: 90vw;
}

.toast.success .toast-content {
    background: #4caf50;
}

.toast.error .toast-content {
    background: #f44336;
}

.toast-message {
    flex: 1;
    max-height: 200px;
    overflow-y: auto;
}

@keyframes toast-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}