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

:root {
  --bg: #f5f5f7;
  --window-bg: #ffffff;
  --sidebar-bg: #ececec;
  --header-bg: #f0f0f2;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --border: rgba(0,0,0,0.08);
  --selection: #0a84ff;
  --selection-bg: rgba(10,132,255,0.14);
  --selection-border: rgba(10,132,255,0.35);
  --hover-bg: rgba(0,0,0,0.04);
  --danger: #ff3b30;
  --shadow: 0 10px 40px rgba(0,0,0,0.12), 0 2px 10px rgba(0,0,0,0.08);
  --radius: 10px;
  --radius-sm: 6px;
}

:root.theme-dark {
  --bg: #1e1e1e;
  --window-bg: #2c2c2e;
  --sidebar-bg: #232325;
  --header-bg: #2a2a2c;
  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --border: rgba(255,255,255,0.08);
  --selection: #0a84ff;
  --selection-bg: rgba(10,132,255,0.25);
  --selection-border: rgba(10,132,255,0.5);
  --hover-bg: rgba(255,255,255,0.05);
  --shadow: 0 10px 40px rgba(0,0,0,0.5), 0 2px 10px rgba(0,0,0,0.3);
}

html, body {
  height: 100%;
  width: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 13px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

button { font-family: inherit; cursor: pointer; border: none; outline: none; background: none; color: inherit; }
input, select, textarea { font-family: inherit; outline: none; }

/* ===== 登录页 ===== */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100vh;
  background: linear-gradient(180deg, #6b7dff 0%, #b066ff 50%, #ff6ec7 100%);
}

:root.theme-dark .login-screen { background: linear-gradient(180deg, #1a1d2e 0%, #2a1d3a 50%, #3a1d2e 100%); }

.login-card {
  width: 320px;
  padding: 32px 28px;
  background: var(--window-bg);
  border-radius: 14px;
  box-shadow: var(--shadow);
  text-align: center;
  backdrop-filter: blur(20px) saturate(180%);
}

.login-icon { font-size: 48px; margin-bottom: 8px; }
.login-card h1 { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.login-subtitle { font-size: 12px; color: var(--text-secondary); margin-bottom: 20px; }

.login-form { text-align: left; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}
.form-group input:focus { border-color: var(--selection); }

.btn-primary {
  width: 100%;
  padding: 9px 16px;
  background: var(--selection);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  margin-top: 6px;
  transition: opacity 0.15s;
}
.btn-primary:hover { opacity: 0.88; }
.btn-ghost {
  padding: 8px 16px;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
}
.btn-ghost:hover { background: var(--hover-bg); }

.login-error { margin-top: 12px; color: var(--danger); font-size: 12px; text-align: center; min-height: 16px; }

/* ===== Finder 窗口 ===== */
.finder-app { width: 100%; height: 100vh; padding: 12px; }

.finder-window {
  width: 100%;
  height: 100%;
  background: var(--window-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.finder-titlebar {
  height: 38px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
  position: relative;
}

.window-buttons { display: flex; gap: 8px; }
.window-buttons span {
  width: 12px; height: 12px;
  border-radius: 50%;
  display: block;
}
.btn-close { background: #ff5f57; }
.btn-mini { background: #febc2e; }
.btn-max { background: #28c840; }

.finder-title {
  flex: 1;
  text-align: center;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.finder-actions { display: flex; gap: 6px; }
.icon-btn {
  padding: 4px 8px;
  font-size: 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}
.icon-btn:hover { background: var(--hover-bg); color: var(--text); }

/* ===== Toolbar ===== */
.finder-toolbar {
  height: 44px;
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 12px;
  background: var(--header-bg);
  border-bottom: 1px solid var(--border);
}

.nav-buttons { display: flex; gap: 4px; }
.nav-btn {
  width: 28px; height: 28px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
}
.nav-btn:hover { background: var(--hover-bg); color: var(--text); }

.path-bar {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  font-size: 13px;
  min-height: 28px;
  overflow-x: auto;
  white-space: nowrap;
}
.crumb {
  padding: 2px 8px;
  border-radius: 4px;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
}
.crumb.active { color: var(--text); font-weight: 500; }
.crumb:hover:not(.active) { background: var(--hover-bg); color: var(--text); }
.crumb-sep { color: var(--text-secondary); opacity: 0.5; }

.view-switcher {
  display: flex;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 2px;
}
.view-btn {
  width: 28px; height: 24px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
}
.view-btn:hover { color: var(--text); }
.view-btn.active { background: var(--window-bg); color: var(--text); box-shadow: 0 1px 2px rgba(0,0,0,0.06); }

.search-box input {
  width: 180px;
  padding: 6px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 12px;
}
.search-box input:focus { border-color: var(--selection); }

/* ===== Body ===== */
.finder-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.finder-sidebar {
  width: 180px;
  background: var(--sidebar-bg);
  padding: 10px 6px;
  overflow-y: auto;
  border-right: 1px solid var(--border);
}
.sidebar-section-title {
  font-size: 11px;
  color: var(--text-secondary);
  padding: 8px 10px 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  margin: 1px 0;
  border-radius: 5px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text);
}
.sidebar-item:hover { background: var(--hover-bg); }
.sidebar-item.active { background: var(--selection); color: #fff; }
.sidebar-icon { font-size: 14px; }

.finder-content {
  flex: 1;
  overflow: hidden;
  background: var(--window-bg);
}

/* ===== 文件区 ===== */
.file-area {
  width: 100%;
  height: 100%;
  padding: 18px;
  overflow-y: auto;
  position: relative;
}

/* 图标视图 */
.icon-view {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(92px, 1fr));
  gap: 16px;
  align-content: start;
}
.icon-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 6px;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  transition: background 0.12s;
  user-select: none;
}
.icon-item:hover { background: var(--hover-bg); }
.icon-item.selected { background: var(--selection-bg); }
.icon-wrap {
  width: 64px; height: 64px;
  display: flex; align-items: center; justify-content: center;
  font-size: 34px;
  margin-bottom: 4px;
  border-radius: 12px;
  background: var(--file-icon-bg, #f0f0f0);
  overflow: hidden;
}
.icon-wrap.file-red { background: #ffebee; }
.icon-wrap.file-blue { background: #e3f2fd; }
.icon-wrap.file-green { background: #e8f5e9; }
.icon-wrap.file-orange { background: #fff3e0; }
.icon-wrap.file-purple { background: #f3e5f5; }
.icon-wrap.file-pink { background: #fce4ec; }
.icon-wrap.file-yellow { background: #fffde7; }
.icon-wrap.file-image { background: #e8eaf6; }
.icon-wrap.file-text { background: #f5f5f5; }
.icon-wrap.file-gray { background: #f0f0f0; }
.icon-thumb {
  width: 100%; height: 100%;
  object-fit: cover;
}
.icon-name {
  font-size: 12px;
  line-height: 1.3;
  max-width: 80px;
  word-break: break-all;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-align: center;
}

/* 列表视图 */
.list-table {
  width: 100%;
  display: flex;
  flex-direction: column;
}
.list-row {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) 100px 180px 100px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  align-items: center;
  user-select: none;
}
.list-row:hover { background: var(--hover-bg); }
.list-row.selected { background: var(--selection-bg); }
.list-header {
  background: var(--header-bg);
  font-weight: 600;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
  cursor: default;
  border-bottom: 1px solid var(--border);
  z-index: 1;
}
.list-header:hover { background: var(--header-bg); }
.col-name { display: flex; align-items: center; gap: 8px; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.col-size, .col-modified, .col-kind { color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row-icon {
  width: 22px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px;
  border-radius: 5px;
  flex-shrink: 0;
  background: var(--file-icon-bg, #f0f0f0);
}
.row-icon.file-red { background: #ffebee; }
.row-icon.file-blue { background: #e3f2fd; }
.row-icon.file-green { background: #e8f5e9; }
.row-icon.file-orange { background: #fff3e0; }
.row-icon.file-purple { background: #f3e5f5; }
.row-icon.file-pink { background: #fce4ec; }
.row-icon.file-yellow { background: #fffde7; }
.row-icon.file-image { background: #e8eaf6; }
.row-icon.file-text { background: #f5f5f5; }
.row-icon.file-gray { background: #f0f0f0; }

/* 分栏视图 */
.file-area.column-view {
  display: flex;
  padding: 0;
}
.column {
  flex: 1;
  min-width: 200px;
  border-right: 1px solid var(--border);
  overflow-y: auto;
}
.column:last-child { border-right: none; }
.column-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border);
  user-select: none;
}
.column-row:hover { background: var(--hover-bg); }
.column-row.selected { background: var(--selection); color: #fff; }
.column-hint { flex: 2; display: flex; align-items: center; justify-content: center; }
.column-empty { color: var(--text-secondary); font-size: 12px; }
.col-name-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.column-info-panel { padding: 20px; text-align: center; }
.column-info-name { font-size: 14px; font-weight: 600; margin-bottom: 12px; word-break: break-all; }
.column-info-row { font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.file-area.column-view { overflow-x: auto; }
.column { min-width: 180px; max-width: 280px; }

/* 状态栏 */
.finder-statusbar {
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  background: var(--header-bg);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-secondary);
}

/* 空状态 */
.empty-state {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-secondary);
}
.empty-icon { font-size: 48px; margin-bottom: 12px; opacity: 0.5; }
.empty-title { font-size: 15px; margin-bottom: 4px; font-weight: 500; color: var(--text); opacity: 0.7; }
.empty-hint { font-size: 12px; }

/* 拖拽蒙层 */
.drop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10,132,255,0.15);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  pointer-events: none;
  border: 3px dashed var(--selection);
}
.drop-box {
  background: var(--window-bg);
  padding: 32px 48px;
  border-radius: 12px;
  text-align: center;
  box-shadow: var(--shadow);
  pointer-events: auto;
}
.drop-icon { font-size: 48px; margin-bottom: 8px; }
.drop-text { font-size: 14px; color: var(--text); }

/* 选框 */
.selection-rect {
  position: fixed;
  border: 1px solid var(--selection);
  background: var(--selection-bg);
  border-radius: 2px;
  pointer-events: none;
  z-index: 998;
}

/* ===== 右键菜单 ===== */
.context-menu {
  position: fixed;
  min-width: 200px;
  background: var(--window-bg);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.25), 0 2px 8px rgba(0,0,0,0.1);
  padding: 4px;
  z-index: 1000;
  backdrop-filter: blur(30px) saturate(180%);
  border: 1px solid var(--border);
}
.cm-item {
  padding: 7px 12px;
  font-size: 13px;
  border-radius: 4px;
  cursor: pointer;
  color: var(--text);
}
.cm-item:hover { background: var(--selection); color: #fff; }
.cm-item.danger { color: var(--danger); }
.cm-item.danger:hover { background: var(--danger); color: #fff; }
.cm-sep {
  height: 1px;
  background: var(--border);
  margin: 4px 8px;
}

/* ===== 弹窗 ===== */
.modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  backdrop-filter: blur(8px);
}
.modal-content {
  position: relative;
  background: var(--window-bg);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  padding: 20px 24px;
  min-width: 360px;
  max-width: 520px;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 14px;
  color: var(--text);
}
.modal-body {
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
  margin-bottom: 18px;
}
.modal-body label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  margin-top: 8px;
}
.modal-body label:first-child { margin-top: 0; }
.modal-body input, .modal-body select {
  width: 100%;
  padding: 7px 10px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}
.modal-body input:focus, .modal-body select:focus { border-color: var(--selection); }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}
.modal-footer .btn-primary, .modal-footer .btn-ghost {
  width: auto;
  min-width: 72px;
  margin-top: 0;
}

/* 简介 */
.info-row {
  display: flex;
  padding: 4px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.info-row:last-child { border-bottom: none; }
.info-label {
  width: 80px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.info-value {
  flex: 1;
  color: var(--text);
  overflow-wrap: break-word;
  word-break: break-all;
}

/* 分享输出 */
.share-output { margin-top: 8px; }
.share-title { font-size: 12px; color: var(--text-secondary); margin-bottom: 6px; }
.share-url-box {
  padding: 8px 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  font-size: 11px;
  font-family: 'SF Mono', Menlo, monospace;
  color: var(--text);
  word-break: break-all;
  line-height: 1.5;
}

/* 图片预览 */
.modal-content.image-preview {
  background: transparent;
  box-shadow: none;
  padding: 0;
  min-width: auto;
  max-width: 90vw;
  max-height: 90vh;
  overflow: visible;
}
.modal-content.image-preview img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  transition: transform 0.08s ease-out;
  cursor: zoom-in;
}
.modal-close {
  position: absolute;
  top: -10px;
  right: -10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--window-bg);
  color: var(--text);
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.modal-close:hover { background: var(--selection); color: #fff; }

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--window-bg);
  color: var(--text);
  padding: 10px 20px;
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  font-size: 13px;
  z-index: 9999;
  display: none;
  align-items: center;
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
}
.toast-success { border-left: 3px solid #28c840; }
.toast-error { border-left: 3px solid var(--danger); }
.toast-info { border-left: 3px solid var(--selection); }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.15); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.3); }
:root.theme-dark ::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); }
:root.theme-dark ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.3); }

@media (max-width: 900px) {
  .finder-sidebar { width: 140px; }
  .list-row { grid-template-columns: minmax(180px, 1fr) 80px 140px 80px; font-size: 11px; }
  .search-box input { width: 120px; }
}