/* ========== Toast 通知 ========== */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 10000;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 4px 12px var(--shadow);
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    max-width: 320px;
}

.toast.show {
    opacity: 1;
    transform: translateX(0);
}

.toast-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    flex-shrink: 0;
}

.toast-success .toast-icon { background: var(--success); color: white; }
.toast-error .toast-icon { background: var(--danger); color: white; }
.toast-warning .toast-icon { background: var(--warning); color: #333; }
.toast-info .toast-icon { background: var(--info); color: white; }

/* ========== 模态框 ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    min-width: 460px;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 8px 32px var(--shadow);
}

.modal h3 {
    margin-bottom: 16px;
    color: var(--text-primary);
}

.modal label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.modal input[type="text"],
.modal input[type="number"] {
    width: 100%;
    padding: 10px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 12px;
    box-sizing: border-box;
}

.modal input:focus {
    outline: none;
    border-color: var(--accent);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

/* 模态框关闭按钮 */
.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 10;
}

.modal-close-btn:hover {
    background: var(--danger);
    color: white;
}

/* ========== PanCloud 样式表 ========== */

:root {
    --bg-primary: #0f0f14;
    --bg-secondary: #1a1a24;
    --bg-tertiary: #24243a;
    --bg-hover: #2a2a44;
    --bg-active: #32324a;
    --text-primary: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a82;
    --accent: #6c5ce7;
    --accent-hover: #7d6ff0;
    --accent-light: rgba(108, 92, 231, 0.15);
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #e17055;
    --info: #74b9ff;
    --border: #2d2d42;
    --shadow: rgba(0, 0, 0, 0.3);
    --radius: 10px;
    --radius-sm: 6px;
    --sidebar-width: 260px;
    --topbar-height: 60px;
    --transition: 0.2s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ========== 侧边栏 ========== */

.sidebar {
    width: var(--sidebar-width);
    min-width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition), opacity var(--transition);
    z-index: 100;
}

.sidebar.collapsed {
    margin-left: calc(-1 * var(--sidebar-width));
    opacity: 0;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 22px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--info));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.version {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 10px 0;
}

.nav-section-title {
    padding: 12px 20px 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    cursor: pointer;
    transition: all var(--transition);
    font-size: 14px;
    color: var(--text-secondary);
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-light);
    color: var(--accent);
    border-left-color: var(--accent);
    font-weight: 500;
}

.nav-item .icon {
    font-size: 16px;
    width: 20px;
    text-align: center;
}

.nav-item .badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 10px;
}

.sidebar-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border);
}

.storage-info {
    font-size: 12px;
    color: var(--text-muted);
}

.storage-bar {
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    margin-top: 6px;
    overflow: hidden;
}

.storage-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--info));
    border-radius: 2px;
    transition: width 0.3s ease;
}

/* ========== 主内容区 ========== */

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

/* ========== 顶部栏 ========== */

.topbar {
    height: var(--topbar-height);
    min-height: var(--topbar-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    gap: 15px;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-icon {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

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

.btn-icon.active {
    background: var(--accent-light);
    color: var(--accent);
    border-color: var(--accent);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-secondary);
    overflow: hidden;
    white-space: nowrap;
}

.crumb {
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.crumb:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.crumb.active {
    color: var(--text-primary);
    font-weight: 500;
}

.crumb-sep {
    color: var(--text-muted);
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.search-box input {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 8px 12px;
    font-size: 13px;
    width: 200px;
    outline: none;
}

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

.search-box button {
    background: none;
    border: none;
    padding: 8px 12px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-muted);
    transition: color var(--transition);
}

.search-box button:hover {
    color: var(--text-primary);
}

.toolbar {
    display: flex;
    gap: 6px;
}

/* ========== 按钮 ========== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-success {
    border-color: var(--success);
    color: var(--success);
}

.btn-success:hover {
    background: rgba(0, 184, 148, 0.15);
}

.btn-warning {
    border-color: var(--warning);
    color: var(--warning);
}

.btn-warning:hover {
    background: rgba(253, 203, 110, 0.15);
}

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

.btn-danger:hover {
    background: rgba(225, 112, 85, 0.15);
}

.btn-sm {
    padding: 4px 10px;
    font-size: 12px;
}

/* ========== 文件区域 ========== */

.file-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding: 0 20px 20px;
}

.file-toolbar {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 0;
    font-size: 13px;
}

.checkbox-wrap {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    color: var(--text-secondary);
}

.checkbox-wrap input[type="checkbox"] {
    accent-color: var(--accent);
    width: 15px;
    height: 15px;
    cursor: pointer;
}

.selected-info {
    color: var(--text-muted);
    font-size: 12px;
}

.file-header {
    display: grid;
    grid-template-columns: 1fr 120px 180px 160px;
    gap: 10px;
    padding: 10px 15px;
    background: var(--bg-secondary);
    border-radius: var(--radius) var(--radius) 0 0;
    border: 1px solid var(--border);
    border-bottom: none;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.file-list {
    flex: 1;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 0 0 var(--radius) var(--radius);
    background: var(--bg-secondary);
}

/* ========== 文件行 ========== */

.file-row {
    display: grid;
    grid-template-columns: 1fr 120px 180px 160px;
    gap: 10px;
    padding: 10px 15px;
    align-items: center;
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
    cursor: pointer;
}

.file-row:hover {
    background: var(--bg-hover);
}

.file-row.selected {
    background: var(--accent-light);
}

.file-row .col-name {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.file-row .file-icon {
    font-size: 20px;
    width: 28px;
    text-align: center;
    flex-shrink: 0;
}

.file-row .file-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
}

.file-row .col-size,
.file-row .col-time {
    font-size: 13px;
    color: var(--text-secondary);
}

.file-row .col-actions {
    display: flex;
    gap: 4px;
    opacity: 0;
    transition: opacity var(--transition);
}

.file-row:hover .col-actions {
    opacity: 1;
}

.col-actions .btn-action {
    padding: 4px 8px;
    font-size: 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.col-actions .btn-action:hover {
    background: var(--bg-active);
    color: var(--text-primary);
}

/* ========== 空状态 ========== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
}

.empty-text {
    font-size: 16px;
}

/* ========== 分页 ========== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 15px 0;
    font-size: 13px;
    color: var(--text-secondary);
}

/* ========== 模态框 ========== */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 28px;
    min-width: 420px;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px var(--shadow);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.modal label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.modal input[type="text"],
.modal input[type="password"],
.modal input[type="number"],
.modal input[type="file"],
.modal textarea,
.modal select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition);
    margin-bottom: 16px;
}

.modal input[type="file"] {
    cursor: pointer;
    padding: 8px 10px;
}

.modal input[type="file"]::file-selector-button {
    background: var(--accent);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
    margin-right: 10px;
    transition: background var(--transition);
}

.modal input[type="file"]::file-selector-button:hover {
    background: var(--accent-hover);
}

.modal input:focus,
.modal textarea:focus,
.modal select:focus {
    border-color: var(--accent);
}

.modal textarea {
    resize: vertical;
    min-height: 100px;
    font-family: inherit;
}

.modal select {
    cursor: pointer;
    appearance: auto;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
}

/* 模态框关闭按钮 */
.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    z-index: 10;
}

.modal-close-btn:hover {
    background: var(--danger);
    color: white;
}

/* ========== Toast通知 ========== */

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: white;
    min-width: 250px;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
    box-shadow: 0 4px 20px var(--shadow);
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.warning { background: var(--warning); color: #333; }
.toast.info { background: var(--info); color: #333; }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; }
    to { opacity: 0; transform: translateY(-10px); }
}

/* ========== 加载动画 ========== */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 30px;
    height: 30px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========== 滚动条 ========== */

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ========== 响应式 ========== */

@media (max-width: 900px) {
    .toolbar {
        flex-wrap: wrap;
    }
    .search-box input {
        width: 150px;
    }
}

@media (max-width: 700px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        z-index: 200;
    }
    .sidebar.collapsed {
        margin-left: calc(-1 * var(--sidebar-width));
    }
    .file-header,
    .file-row {
        grid-template-columns: 1fr 80px 120px;
    }
    .file-header .col-actions,
    .file-row .col-actions {
        display: none;
    }
}