/**
 * QuickShare - iOS/macOS Glassmorphism Style
 * Supports dark/light mode, responsive layout
 */

/* ========== CSS Variables ========== */
:root {
  --primary: var(--brand-blue);
  --primary-light: rgba(0, 122, 255, 0.12);
  --primary-glow: rgba(0, 122, 255, 0.25);
  --success: #34c759;
  --warning: #ff9500;
  --danger: #ff3b30;
  --info: #5ac8fa;
  --purple: #af52de;

  --bg: #f2f2f7;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #fff;
  --text: #1c1c1e;
  --text-secondary: #8e8e93;
  --text-tertiary: #aeaeb2;
  --icon-color: #c7c7cc;
  --border: rgba(0, 0, 0, 0.06);
  --border-glass: rgba(255, 255, 255, 0.5);

  --radius: 20px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --radius-xl: 24px;

  --shadow: 0 2px 16px rgba(0, 0, 0, 0.04), 0 0 1px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08), 0 0 1px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 24px rgba(0, 122, 255, 0.15);
  --shadow-danger: 0 0 24px rgba(255, 59, 48, 0.15);

  --blur: saturate(180%);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.7);

  --sidebar-width: 240px;
  --header-height: 60px;
  --nav-height: 52px;
}

[data-theme="dark"] {
  --primary: var(--brand-blue);
  --primary-light: rgba(10, 132, 255, 0.15);
  --primary-glow: rgba(10, 132, 255, 0.3);
  --success: #30d158;
  --warning: #ff9f0a;
  --danger: #ff453a;
  --info: #64d2ff;
  --purple: #bf5af2;

  --bg: #000000;
  --surface: rgba(28, 28, 30, 0.72);
  --surface-solid: #1c1c1e;
  --text: #ffffff;
  --text-secondary: #8e8e93;
  --text-tertiary: #636366;
  --icon-color: #8e8e93;
  --border: rgba(255, 255, 255, 0.08);
  --border-glass: rgba(255, 255, 255, 0.1);

  --shadow: 0 2px 16px rgba(0, 0, 0, 0.2), 0 0 1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.3), 0 0 1px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 24px rgba(10, 132, 255, 0.25);
  --shadow-danger: 0 0 24px rgba(255, 69, 58, 0.25);

  --glass-bg: rgba(28, 28, 30, 0.78);
  --glass-border: rgba(255, 255, 255, 0.12);
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(0, 122, 255, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(88, 86, 214, 0.03) 0%, transparent 50%);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: opacity 0.2s;
}
a:hover { opacity: 0.75; }

button { font-family: inherit; }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

/* ========== Animations ========== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-8px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ========== Layout ========== */
.qs-app {
  display: flex;
  min-height: calc(100vh - var(--nav-height, 52px));
  position: relative;
}

.qs-sidebar {
  width: var(--sidebar-width);
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-right: 1px solid var(--glass-border);
  position: fixed;
  top: 60px;
  left: 0;
  bottom: 0;
  z-index: 9999;
  padding: 16px 12px;
  overflow-y: auto;
  transition: transform 0.3s ease;
  display: flex;
  flex-direction: column;
}

.qs-sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 8px 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.qs-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 16px;
  flex-shrink: 0;
  object-fit: cover;
}

.qs-user-info {
  min-width: 0;
  overflow: hidden;
}

.qs-user-name {
  font-weight: 600;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.qs-user-email {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.qs-sidebar-nav {
  flex: 1;
  overflow-y: auto;
}

.qs-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  transition: background 0.2s, color 0.2s;
  margin-bottom: 4px;
}

.qs-nav-item:hover {
  background: var(--primary-light);
  color: var(--primary);
  text-decoration: none;
  opacity: 1;
}

.qs-nav-item.active {
  background: var(--primary);
  color: #fff;
}

.qs-nav-item i {
  width: 18px;
  text-align: center;
  font-size: 14px;
}

.qs-sidebar-footer {
  padding-top: 12px;
  border-top: 1px solid var(--border);
  margin-top: 8px;
}

.qs-quota-bar-wrap {
  margin-bottom: 12px;
}

.qs-quota-label {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.qs-quota-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}

.qs-quota-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 3px;
  transition: width 0.5s ease;
}

.qs-quota-fill.warning { background: var(--warning); }
.qs-quota-fill.danger { background: var(--danger); }

.qs-quota-request-link {
  display: block;
  text-align: center;
  font-size: 12px;
  color: var(--text-secondary);
  opacity: 0.6;
  margin-top: 4px;
  text-decoration: none;
  transition: opacity 0.2s, color 0.2s;
}
.qs-quota-request-link:hover {
  opacity: 1;
  color: var(--primary);
}

.qs-logout {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 13px;
  transition: background 0.2s, color 0.2s;
}

.qs-logout:hover {
  background: rgba(255,59,48,0.1);
  color: var(--danger);
  text-decoration: none;
  opacity: 1;
}

.qs-main {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding-top: 60px;
  min-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
  transition: margin-left 0.3s ease;
}

.qs-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  position: sticky;
  top: 60px;
  z-index: 9999;
}

.qs-topbar-left {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.qs-topbar-right {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  position: relative;
}

.qs-breadcrumb {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.qs-breadcrumb a {
  color: var(--text-secondary);
  font-size: 13px;
}

.qs-breadcrumb a:hover {
  color: var(--primary);
  opacity: 1;
}

.qs-breadcrumb .separator {
  color: var(--text-tertiary);
  font-size: 12px;
}

.qs-breadcrumb .current {
  color: var(--text);
  font-weight: 500;
}

.qs-search-wrap {
  position: relative;
  width: 280px;
}

.qs-search-wrap i {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-size: 14px;
  pointer-events: none;
}

.qs-search-wrap input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-solid);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.qs-search-wrap input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.qs-search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  max-height: 300px;
  overflow-y: auto;
  display: none;
  z-index: 10000;
}

.qs-search-dropdown.show {
  display: block;
}

.qs-search-item {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.2s;
}

.qs-search-item:hover {
  background: var(--primary-light);
}

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

.qs-search-item-name {
  font-size: 13px;
  color: var(--text);
  font-weight: 500;
}

.qs-search-item-path {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.qs-search-highlight {
  background: rgba(0,122,255,0.15);
  color: var(--accent);
  border-radius: 2px;
  padding: 0 1px;
}

.qs-search-empty {
  padding: 16px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.share-batch-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 14px;
  background: var(--bg-secondary);
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* Drag-to-move visual feedback */
.file-item.dragging, .grid-item.dragging {
  opacity: 0.4;
}
.file-item.drop-target, .grid-item.drop-target {
  outline: 2px dashed var(--accent);
  outline-offset: -2px;
  background: rgba(0,122,255,0.06);
  border-radius: 8px;
  transition: background 0.15s, outline 0.15s;
}

.qs-content {
  flex: 1;
  padding: 24px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  animation: fadeIn 0.5s ease;
}

/* Mobile sidebar toggle */
.qs-sidebar-toggle {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* Inline sidebar toggle in topbar — always visible */
.qs-topbar .qs-sidebar-toggle {
  display: inline-flex;
  position: static;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  box-shadow: none;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 16px;
  z-index: auto;
}
.qs-topbar .qs-sidebar-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}

/* QuickShare button variants (used in modals / toolbar) */
.qs-btn {
  padding: 8px 16px;
  border-radius: var(--radius-xs);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
  background: var(--glass-bg);
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
}
.qs-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}
.qs-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.qs-btn-primary {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}
.qs-btn-primary:hover { box-shadow: var(--shadow-glow); }
.qs-btn-danger {
  color: var(--danger);
  border-color: rgba(255, 59, 48, 0.2);
}
.qs-btn-danger:hover {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
  box-shadow: var(--shadow-danger);
}

.view-toggle {
  display: flex;
  gap: 2px;
  background: rgba(0, 0, 0, 0.03);
  border-radius: 8px;
  padding: 2px;
}

.view-toggle-btn {
  padding: 6px 10px;
  border-radius: 6px;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 14px;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
}

.view-toggle-btn.active {
  background: var(--surface-solid);
  color: var(--text);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

/* ========== File Toolbar ========== */
.file-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.file-toolbar-left,
.sort-select-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}
.sort-select-wrap select {
  min-width: 120px;
}

/* ========== Grid Size Control ========== */
.grid-size-control {
  display: flex;
  align-items: center;
  gap: 6px;
  position: relative;
}
.grid-size-control.hidden { display: none; }
.grid-size-label {
  color: var(--text-secondary);
  font-size: 14px;
  cursor: default;
  display: flex;
  align-items: center;
}
.grid-size-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 80px;
  height: 4px;
  border-radius: 2px;
  background: var(--glass-border);
  outline: none;
  cursor: pointer;
}
.grid-size-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  transition: transform 0.15s;
}
.grid-size-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}
.grid-size-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  border: none;
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.grid-size-ticks {
  display: flex;
  justify-content: space-between;
  width: 80px;
  position: absolute;
  bottom: -14px;
  left: 22px;
  pointer-events: none;
}
.grid-size-ticks span {
  font-size: 9px;
  color: var(--text-secondary);
  opacity: 0.6;
}

.file-toolbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Back / parent folder button */
.btn-back-parent {
  padding: 8px 14px;
  border-radius: var(--radius-xs);
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border);
  cursor: pointer;
  background: var(--glass-bg);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
}
.btn-back-parent:hover {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-glow);
}

/* ========== File List (List View) ========== */
.file-list {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.file-list > .file-header:first-child {
  border-radius: var(--radius) var(--radius) 0 0;
}

.file-list > .file-item:last-child {
  border-radius: 0 0 var(--radius) var(--radius);
  border-bottom: none;
}

.file-header {
  display: grid;
  grid-template-columns: 40px 1fr 80px 120px 170px;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}

.file-item {
  display: grid;
  grid-template-columns: 40px 1fr 80px 120px 170px;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.03);
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
  cursor: default;
  animation: fadeIn 0.25s ease both;
}

.file-item:hover {
  background: rgba(0, 122, 255, 0.03);
}

.file-item.selected {
  background: var(--primary-light);
}

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

/* 搜索结果定位高亮 */
.file-highlight {
  background: rgba(0, 122, 255, 0.15) !important;
  animation: highlightPulse 2s ease-in-out 5;
}
@keyframes highlightPulse {
  0%, 100% { background: rgba(0, 122, 255, 0.08); }
  50% { background: rgba(0, 122, 255, 0.2); }
}

.file-checkbox {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========== 自定义 checkbox（iOS/macOS 玻璃风） ========== */
.file-checkbox input[type="checkbox"],
.grid-item-checkbox input[type="checkbox"],
input.file-cb[type="checkbox"] {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--text-tertiary);
  border-radius: 5px;
  background: transparent;
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: border-color .15s ease, background-color .15s ease, opacity .15s ease, transform .12s ease;
  opacity: .55;
  margin: 0;
  vertical-align: middle;
}

/* 行 hover 或已勾选时恢复完整不透明度 */
.file-item:hover .file-checkbox input[type="checkbox"],
.file-item:hover input.file-cb[type="checkbox"],
.grid-item:hover .grid-item-checkbox input[type="checkbox"],
.grid-item:hover input.file-cb[type="checkbox"],
.file-header .file-checkbox input[type="checkbox"],
.file-checkbox input[type="checkbox"]:checked,
.grid-item-checkbox input[type="checkbox"]:checked,
input.file-cb[type="checkbox"]:checked,
.file-checkbox input[type="checkbox"]:focus-visible,
.grid-item-checkbox input[type="checkbox"]:focus-visible,
input.file-cb[type="checkbox"]:focus-visible {
  opacity: 1;
}

.file-checkbox input[type="checkbox"]:hover,
.grid-item-checkbox input[type="checkbox"]:hover,
input.file-cb[type="checkbox"]:hover {
  border-color: var(--primary);
}

/* 选中态：填充主色 + 白色对勾 */
.file-checkbox input[type="checkbox"]:checked,
.grid-item-checkbox input[type="checkbox"]:checked,
input.file-cb[type="checkbox"]:checked {
  background-color: var(--primary);
  border-color: var(--primary);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none'><path d='M3.5 8.2 L6.5 11 L12.5 5' stroke='white' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/></svg>");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 14px 14px;
}

.file-checkbox input[type="checkbox"]:focus-visible,
.grid-item-checkbox input[type="checkbox"]:focus-visible,
input.file-cb[type="checkbox"]:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--primary-glow);
}

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

.file-icon {
  font-size: 16px;
  flex-shrink: 0;
  width: 24px;
  text-align: center;
  color: var(--icon-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.file-icon svg {
  vertical-align: middle;
  display: block;
}

.file-thumb {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
  background: var(--surface);
}

.file-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  opacity: 0.88;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  cursor: pointer;
  letter-spacing: -0.1px;
  padding: 2px 4px;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
}

.file-name:hover { color: var(--primary); opacity: 1; }

.file-name.editing {
  border-color: var(--primary);
  background: var(--surface-solid);
  box-shadow: 0 0 0 3px var(--primary-light);
  overflow: visible;
  white-space: normal;
  outline: none;
  cursor: text;
  min-width: 120px;
  opacity: 1;
}

.file-size, .file-date {
  font-size: 12px;
  color: var(--text-secondary);
  text-align: left;
}

.file-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  flex-wrap: nowrap;
}

/* ========== File Grid (Grid View) ========== */
.file-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 16px;
  padding: 4px;
}

.grid-item {
  container-type: inline-size;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
  cursor: pointer;
  transition: background 0.25s, border-color 0.25s, transform 0.25s, opacity 0.25s;
  position: relative;
  animation: fadeInUp 0.3s ease both;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
  overflow: hidden;
}

.grid-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.grid-item.selected {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: var(--shadow-glow);
}

.grid-item-checkbox {
  position: absolute;
  top: 8px;
  left: 8px;
  z-index: 2;
}

.grid-item-icon {
  font-size: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  color: var(--icon-color);
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-xs);
}

.grid-item-icon svg {
  display: block;
}

.grid-item-thumb {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius-xs);
  background: var(--surface);
  min-height: 0;
  display: block;
}

.grid-item-name {
  font-size: 14px;
  font-weight: 500;
  max-width: 100%;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  word-break: break-all;
  line-height: 1.3;
}

.grid-item-meta {
  font-size: 12px;
  color: var(--text-secondary);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.grid-item-info {
  min-height: 0;
  overflow: hidden;
  text-align: center;
}

/* Scale text with card size */
@container (max-width: 140px) {
  .grid-item-name { font-size: 12px; }
  .grid-item-meta { font-size: 10px; }
  .grid-item-icon { font-size: 36px; }
}
@container (min-width: 200px) {
  .grid-item-name { font-size: 15px; }
  .grid-item-meta { font-size: 13px; }
  .grid-item-icon { font-size: 56px; }
}
@container (min-width: 260px) {
  .grid-item-name { font-size: 16px; }
  .grid-item-meta { font-size: 14px; }
  .grid-item-icon { font-size: 64px; }
}

.grid-item-actions {
  position: absolute;
  top: 8px;
  right: 8px;
  display: none;
  gap: 4px;
}

.grid-item:hover .grid-item-actions {
  display: flex;
}

@media (hover: none) {
  .grid-item-actions { display: flex !important; opacity: 1; }
}

/* ========== Action Buttons ========== */
.action-btn {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  background: transparent;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
  white-space: nowrap;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  flex-shrink: 0;
}

.action-btn:hover {
  background: rgba(0, 122, 255, 0.08);
  color: var(--primary);
}

.action-btn.shared {
  background: rgba(52, 199, 89, 0.12);
  color: #248a3d;
}

.action-btn.shared:hover {
  background: rgba(52, 199, 89, 0.22);
  color: #248a3d;
}

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

.action-btn-danger:hover {
  background: rgba(255, 59, 48, 0.1);
  color: var(--danger);
}

/* ========== More Menu ========== */
.more-menu-wrap {
  position: relative;
  display: inline-flex;
}

.more-menu {
  position: fixed;
  z-index: 10001;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-lg);
  min-width: 140px;
  display: none;
  overflow: hidden;
}

.more-menu.show { display: block; animation: fadeIn 0.15s ease; }

.more-menu-item {
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
}

.more-menu-item:hover { background: rgba(0, 0, 0, 0.04); }

.more-menu-item.danger { color: var(--danger); }
.more-menu-item.danger:hover { background: rgba(255, 59, 48, 0.06); }

/* ========== Context Menu (Right Click) ========== */
.context-menu {
  position: fixed;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  z-index: 10000;
  display: none;
  overflow: hidden;
  animation: fadeIn 0.1s ease;
}

.context-menu.show { display: block; }

.context-menu-header {
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.context-menu-item {
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.context-menu-item:hover { background: rgba(0, 0, 0, 0.04); }

.context-menu-item.danger { color: var(--danger); }
.context-menu-item.danger:hover { background: rgba(255, 59, 48, 0.06); }

.context-menu-divider {
  height: 1px;
  background: var(--border);
  margin: 4px 0;
}

/* ========== Share Tooltip ========== */
.share-btn-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.share-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-4px);
  background: rgba(28, 28, 30, 0.9);
color: #fff;
  font-size: 11px;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: 8px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s, transform 0.2s;
  cursor: pointer;
  z-index: 10000;
}

.share-btn-wrap:hover .share-tooltip {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(-6px);
}

.share-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: rgba(28, 28, 30, 0.9);
}

@media (hover: none) {
  .share-tooltip { opacity: 1; visibility: visible; }
}

/* ========== Batch Bar ========== */
.qs-batch-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border-radius: var(--radius);
  padding: 10px 20px;
  box-shadow: var(--shadow-lg);
  display: none;
  align-items: center;
  gap: 10px;
  z-index: 10000;
  border: 1px solid var(--glass-border);
  transition: opacity 0.3s ease, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  max-width: calc(100vw - 48px);
  white-space: nowrap;
  flex-wrap: nowrap;
}
.qs-batch-bar .qs-btn { flex-shrink: 0; padding: 6px 12px; font-size: 12px; }

.qs-batch-bar.show { display: flex; animation: batchBarIn 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275); }

@keyframes batchBarIn {
  from { opacity: 0; transform: translateX(-50%) translateY(16px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* ========== Drag & Drop ========== */
.file-item[draggable="true"] { cursor: grab; }
.file-item[draggable="true"]:active { cursor: grabbing; }
.file-item.dragging { opacity: 0.35; background: var(--primary-light); }
.file-item.drag-over {
  background: var(--primary-light);
  box-shadow: inset 0 0 0 2px var(--primary);
  border-radius: var(--radius-sm);
}

.drag-ghost {
  position: fixed;
  pointer-events: none;
  z-index: 10001;
  background: var(--glass-bg);
border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  box-shadow: var(--shadow-glow);
  white-space: nowrap;
}

.qs-drop-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 122, 255, 0.06);
z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.qs-drop-overlay.show { display: flex; }

.qs-drop-overlay-inner {
  background: var(--glass-bg);
border: 2px dashed var(--primary);
  border-radius: 24px;
  padding: 48px 64px;
  text-align: center;
  box-shadow: var(--shadow-glow);
  animation: scaleIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.qs-drop-overlay-icon { font-size: 48px; margin-bottom: 12px; }
.qs-drop-overlay-text { font-size: 16px; font-weight: 600; color: var(--primary); }

/* ========== Upload Panel ========== */
.qs-upload-panel {
  position: fixed;
  bottom: 24px;
  left: 24px;
  width: 360px;
  max-height: 320px;
  overflow-y: auto;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  padding: 16px;
  display: none;
  animation: fadeInUp 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.qs-upload-panel.show { display: block; }

.qs-upload-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 13px;
  font-weight: 600;
}

.qs-upload-panel-close {
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 18px;
  line-height: 1;
  transition: color 0.2s;
}

.qs-upload-panel-close:hover { color: var(--text); }

.upload-item {
  margin-bottom: 10px;
  padding: 8px 10px;
  background: var(--surface);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(0, 0, 0, 0.03);
}

.upload-item:last-child { margin-bottom: 0; }

.upload-item-name {
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 6px;
  color: var(--text);
}

.upload-item-bar {
  height: 4px;
  background: rgba(0, 0, 0, 0.06);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 4px;
}

.upload-item-fill {
  height: 100%;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.15s linear;
  width: 0%;
}

.upload-item-fill.done { background: var(--success); }
.upload-item-fill.error { background: var(--danger); }

.upload-item-meta {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-secondary);
}

/* ========== Modal ========== */
.modal-overlay,
.qs-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;

padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

.modal,
.qs-modal {
  background: var(--glass-bg);
  backdrop-filter: saturate(200%);
  -webkit-backdrop-filter: saturate(200%);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 28px;
  width: 100%;
  max-width: 420px;
  max-height: 85vh;
  overflow: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px) scale(0.97);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.modal-overlay.show .modal,
.qs-modal-overlay.show .qs-modal,
.qs-modal-overlay.show .modal {
  transform: translateY(0) scale(1);
}

.modal.modal-lg,
.qs-modal.qs-modal-lg { max-width: 640px; }
.modal.modal-xl { max-width: 900px; }

.modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.modal-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 12px;
  background: var(--surface);
  color: var(--text);
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
}

.modal-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* QuickShare modal variants */
.qs-modal {
  background: var(--glass-bg);
  backdrop-filter: saturate(200%);
  -webkit-backdrop-filter: saturate(200%);
  border: 1px solid var(--glass-border);
  border-radius: 24px;
  padding: 28px;
  width: 100%;
  max-width: 420px;
  max-height: 85vh;
  overflow: auto;
  box-shadow: var(--shadow-lg);
  animation: fadeInUp 0.3s ease;
}
.qs-modal-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}
.qs-modal-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-bottom: 12px;
  background: var(--surface);
  color: var(--text);
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
}
.qs-modal-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.qs-modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* ========== File Type Selector (Create File Modal) ========== */
.qs-file-type-selector {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}
.qs-file-type-option {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1.5px solid var(--border);
  background: var(--glass-bg);
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}
.qs-file-type-option input[type="radio"] {
  display: none;
}
.qs-file-type-option:hover {
  border-color: var(--accent);
}
.qs-file-type-option.active {
  border-color: var(--accent);
  background: rgba(var(--accent-rgb, 0, 122, 255), 0.1);
  color: var(--accent);
  font-weight: 600;
}
.qs-modal-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
}

/* ========== Settings Modal ========== */
.qs-settings-body {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.qs-settings-section {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border);
}
.qs-settings-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.qs-settings-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}
.qs-settings-profile {
  display: flex;
  align-items: center;
  gap: 14px;
}
.qs-settings-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 600;
  flex-shrink: 0;
}
.qs-settings-profile-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.qs-settings-profile-email {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 2px;
}
.qs-settings-quota {
  background: var(--surface);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.qs-settings-quota-info {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  margin-bottom: 8px;
}
.qs-settings-quota-info span:first-child { color: var(--text-secondary); }
.qs-settings-quota-info span:last-child { font-weight: 600; color: var(--text); }
.qs-settings-quota-bar {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.qs-settings-quota-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #5ac8fa);
  border-radius: 4px;
  transition: width 0.4s ease;
}
.qs-settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
}
.qs-settings-row label {
  font-size: 14px;
  color: var(--text);
}
.qs-settings-select {
  padding: 6px 36px 6px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  font-size: 13px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  appearance:none; -webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236e6e73' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e");
  background-repeat:no-repeat; background-position:right 12px center;
}
select.qs-modal-input {
  appearance:none; -webkit-appearance:none;
  background-image:url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236e6e73' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'/%3e%3c/svg%3e");
  background-repeat:no-repeat; background-position:right 12px center; padding-right:36px;
}

/* Settings: Logs */
.qs-settings-logs {
  max-height: 200px;
  overflow-y: auto;
  font-size: 12px;
  color: var(--text-secondary);
}
.qs-settings-log-item {
  display: flex;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.qs-settings-log-item:last-child { border-bottom: none; }
.qs-settings-log-action {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 500;
  min-width: 40px;
  text-align: center;
}
.qs-settings-log-action.upload { background: rgba(0,122,255,0.15); color: var(--info); }
.qs-settings-log-action.download { background: rgba(52,199,89,0.15); color: var(--success); }
.qs-settings-log-action.delete { background: rgba(255,59,48,0.15); color: var(--danger); }
.qs-settings-log-action.edit { background: rgba(255,149,0,0.15); color: var(--warning); }
.qs-settings-log-action.default { background: var(--glass-bg); color: var(--text-secondary); }
.qs-settings-log-path {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.qs-settings-log-time {
  font-size: 11px;
  color: var(--text-tertiary);
  white-space: nowrap;
}

/* Settings: Extensions */
.qs-settings-exts {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-height: 120px;
  overflow-y: auto;
}
.qs-settings-ext-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  background: var(--glass-bg);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.modal-section {
  margin-bottom: 16px;
}

.modal-section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: block;
}

.modal-hint {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ========== Share Cards ========== */
.share-grid {
  display: grid;
  gap: 12px;
}

.share-item {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
}

.share-item:hover { box-shadow: var(--shadow-lg); }

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

.share-file {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  letter-spacing: -0.2px;
}

.share-meta {
  font-size: 12px;
  color: var(--text-secondary);
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.share-stats {
  display: flex;
  gap: 16px;
  text-align: center;
}

.share-stat-val {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.share-stat-lab {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ========== Share Header ========== */
.share-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.share-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

/* ========== Stats Header ========== */
.stats-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 12px;
  flex-wrap: wrap;
}
.stats-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.3px;
}

.month-selector {
  display: flex;
  align-items: center;
  gap: 8px;
}
.month-selector label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
}
.month-selector select {
  padding: 6px 12px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  font-size: 13px;
  background: var(--glass-bg);
  color: var(--text);
  cursor: pointer;
}

.share-badge {
  font-size: 10px;
  padding: 3px 8px;
  border-radius: 20px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.2px;
}

.share-badge.expired {
  background: rgba(255, 59, 48, 0.12);
  color: var(--danger);
}

/* ========== Image Gallery / Lightbox ========== */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.92);
z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease;
}

.lightbox-overlay.show { display: flex; }

.lightbox-img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius-xs);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: scaleIn 0.25s ease;
}

.lightbox-close {
  position: absolute;
  top: 20px;
  right: 24px;
  color: #fff;
  font-size: 32px;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.2s;
  z-index: 10001;
}

.lightbox-close:hover { opacity: 1; }

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  font-size: 40px;
  cursor: pointer;
  opacity: 0.5;
  transition: opacity 0.2s;
  padding: 16px;
  z-index: 10001;
  user-select: none;
}

.lightbox-nav:hover { opacity: 1; }
.lightbox-prev { left: 10px; }
.lightbox-next { right: 10px; }

.lightbox-counter {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  color: #fff;
  font-size: 13px;
  opacity: 0.7;
  background: rgba(0, 0, 0, 0.4);
  padding: 6px 14px;
  border-radius: 20px;
}

/* ========== Gallery (Image Preview) ========== */
.qs-gallery {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.qs-gallery img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-xs);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.qs-gallery-caption {
  margin-top: 12px;
  color: rgba(255,255,255,0.8);
  font-size: 14px;
  text-align: center;
}

.qs-gallery-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  opacity: 0.7;
  background: none;
  border: none;
  transition: opacity 0.2s;
  z-index: 1;
}

.qs-gallery-close:hover { opacity: 1; }

/* ========== Toast Notifications ========== */
.toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: rgba(28, 28, 30, 0.92);

color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  transform: translateX(120%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 360px;
}

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

.toast-success { border-left: 3px solid var(--success); }
.toast-error { border-left: 3px solid var(--danger); }
.toast-warning { border-left: 3px solid var(--warning); }
.toast-info { border-left: 3px solid var(--info); }

.toast-close {
  margin-left: auto;
  cursor: pointer;
  opacity: 0.6;
  font-size: 16px;
}
.toast-close:hover { opacity: 1; }

/* ========== Batch Progress Overlay ========== */
.qs-batch-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.qs-batch-progress.show {
  opacity: 1;
  pointer-events: auto;
}
.qs-batch-progress-card {
  background: var(--panel-bg, #1c1c1e);
  border-radius: 16px;
  padding: 28px 36px;
  min-width: 320px;
  max-width: 420px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  text-align: center;
}
.qs-batch-progress-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}
.qs-batch-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 10px;
}
.qs-batch-progress-bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0%;
}
.qs-batch-progress-text {
  font-size: 13px;
  color: var(--text-secondary);
}
.qs-batch-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2.5px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: qs-spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}
@keyframes qs-spin {
  to { transform: rotate(360deg); }
}

/* ========== Pagination ========== */
.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--glass-bg);
  font-size: 13px;
  color: var(--text-secondary);
  border-radius: var(--radius);
  margin-top: 8px;
}

.pagination-info { white-space: nowrap; }

.pagination-pages {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.page-btn {
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--border);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, opacity 0.2s, transform 0.2s;
  min-width: 28px;
  text-align: center;
}

.page-btn:hover { background: var(--primary); color: #fff; border-color: transparent; }
.page-btn.active { background: var(--primary); color: #fff; border-color: transparent; pointer-events: none; }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ========== Stats Overview ========== */
.stats-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 14px;
}
.stats-title { font-size: 16px; font-weight: 700; margin: 0; }
.stats-header-actions { display: flex; align-items: center; gap: 8px; }
.month-selector { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--text-secondary); }
.month-selector select {
  font-size: 12px; padding: 4px 8px; border-radius: 6px;
  border: 1px solid var(--glass-border); background: var(--glass-bg);
  color: var(--text); cursor: pointer;
}
.stats-customize-btn {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: 11px; padding: 4px 10px; border-radius: 6px;
  border: 1px solid var(--glass-border); background: var(--glass-bg);
  color: var(--text-secondary); cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
}
.stats-customize-btn:hover { border-color: var(--primary); color: var(--primary); }

.stats-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

@media (max-width: 1024px) {
  .stats-overview { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .stats-overview { grid-template-columns: 1fr 1fr; gap: 8px; }
}

/* ========== Stats / Charts ========== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

@media (max-width: 900px) {
  .stats-grid { grid-template-columns: 1fr; }
}

.stat-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 14px 14px 12px;
  text-align: center;
  transition: border-color 0.15s, box-shadow 0.15s, opacity 0.15s, transform 0.15s;
  display: flex; flex-direction: column; align-items: center; gap: 2px;
  position: relative;
}

.stat-card:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

/* Drag/drop states */
.stat-card[draggable="true"] { cursor: grab; }
.stat-card[draggable="true"]:active { cursor: grabbing; }
.stat-card.dragging { opacity: 0.35; }
.stat-card.drag-over { border-color: var(--primary); box-shadow: 0 0 0 2px rgba(0,122,255,0.15); }

.stat-drag-handle {
  position: absolute; top: 6px; right: 6px; opacity: 0;
  transition: opacity 0.15s; color: var(--text-tertiary);
  padding: 2px; cursor: grab; font-size: 12px; line-height: 1;
}
.stat-card:hover .stat-drag-handle { opacity: 0.5; }
.stat-drag-handle:hover { opacity: 1 !important; }

.stat-icon { font-size: 18px; margin-bottom: 4px; opacity: .65; }

.stat-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0;
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.stat-label {
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 500;
}

/* Metric picker modal */
.metric-modal-overlay {
  position: fixed; inset: 0; z-index: 99999;
  background: rgba(0,0,0,0.45); display: none;
  align-items: center; justify-content: center; padding: 20px;
}
.metric-modal-overlay.show { display: flex; }
.metric-modal-box {
  background: var(--card-bg); border: 1px solid var(--glass-border);
  border-radius: 20px; padding: 24px; max-width: 620px; width: 100%;
  max-height: 80vh; display: flex; flex-direction: column;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
}
.metric-modal-box h3 { font-size: 16px; font-weight: 700; margin: 0 0 4px; }
.metric-modal-counter { font-size: 11px; color: var(--text-secondary); margin-bottom: 12px; }
.metric-cat-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.metric-cat-tab {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 4px 10px; border-radius: 980px;
  border: 1px solid var(--glass-border); background: var(--glass-bg);
  color: var(--text-secondary); font-size: 11px; cursor: pointer;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.metric-cat-tab:hover { border-color: var(--primary); color: var(--text); }
.metric-cat-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.metric-modal-list {
  display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
  overflow-y: auto; flex: 1; min-height: 0; padding-right: 4px;
}
.metric-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 12px;
  border: 1px solid var(--glass-border); background: var(--glass-bg);
  cursor: pointer; user-select: none;
  transition: border-color 0.15s, background 0.15s;
}
.metric-item:hover { border-color: rgba(0,122,255,0.3); }
.metric-item.selected { border-color: var(--primary); background: rgba(0,122,255,0.06); }
.metric-item.disabled { opacity: 0.4; cursor: not-allowed; }
.metric-item .mi-check {
  width: 16px; height: 16px; border-radius: 4px;
  border: 2px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 10px;
  transition: border-color 0.15s, background 0.15s;
}
.metric-item.selected .mi-check {
  border-color: var(--primary); background: var(--primary); color: #fff;
}
.metric-item .mi-info { flex: 1; min-width: 0; }
.metric-item .mi-label { font-size: 12px; font-weight: 600; color: var(--text); }
.metric-item .mi-desc { font-size: 10px; color: var(--text-secondary); margin-top: 1px; }
.metric-modal-footer {
  display: flex; justify-content: flex-end; gap: 8px;
  margin-top: 16px; padding-top: 12px;
  border-top: 1px solid var(--glass-border);
}

.chart-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.chart-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.2px;
}

/* ========== Log Tables ========== */
.log-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.log-table th, .log-table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.log-table th {
  color: var(--text-tertiary);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-weight: 600;
}

.log-table tr:hover { background: rgba(0, 122, 255, 0.03); }

/* ========== Empty State ========== */
.empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-secondary);
}

.empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.4; }

/* ========== Folder Tree ========== */
.folder-tree {
  max-height: 300px;
  overflow: auto;
  padding: 8px 0;
}

.folder-tree-item {
  padding: 8px 12px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: background 0.15s, transform 0.15s;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}

.folder-tree-item:hover { background: rgba(0, 0, 0, 0.04); color: var(--text); }
.folder-tree-item.selected { background: var(--primary); color: #fff; }

/* ========== Login ========== */
.qs-login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
  padding-top: 80px;
}

.qs-login-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  border-radius: 28px;
  padding: 48px 40px;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow-lg);
  text-align: center;
  animation: fadeInUp 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.qs-login-logo { font-size: 36px; margin-bottom: 8px; }

.qs-login-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 28px;
  letter-spacing: -0.3px;
}

.qs-login-input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  margin-bottom: 12px;
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.25s;
  background: var(--surface);
  color: var(--text);
}

.qs-login-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
}

.qs-login-btn {
  width: 100%;
  padding: 14px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.25s;
  letter-spacing: 0.2px;
}

.qs-login-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.qs-login-btn:active {
  transform: scale(0.98);
}

.qs-login-error { color: var(--danger); font-size: 13px; margin-top: 10px; }

/* ========== Spinner ========== */
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

/* ========== Desktop Sidebar Collapse ========== */
body.qs-sidebar-collapsed .qs-sidebar {
  transform: translateX(-100%);
}
body.qs-sidebar-collapsed .qs-main {
  margin-left: 0;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .qs-sidebar {
    transform: translateX(-100%);
    z-index: 9999;
    box-shadow: none;
    transition: transform 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease;
  }
  .qs-sidebar.open {
    transform: translateX(0);
    box-shadow: 4px 0 20px rgba(0,0,0,0.1);
  }
  .qs-main { margin-left: 0; }
  .qs-sidebar-toggle { display: flex; }
  .qs-batch-bar { flex-wrap: wrap; }
  .qs-upload-panel { left: 12px; right: 12px; width: auto; }
}

/* Sidebar backdrop for mobile */
.qs-sidebar-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.3);

z-index: 10000;
}
.qs-sidebar-backdrop.show { display: block; }

@media (max-width: 768px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stats-overview { grid-template-columns: repeat(2, 1fr); }
  .file-header, .file-item { grid-template-columns: 40px 1fr auto; }
  .file-size, .file-date { display: none; }
  .qs-upload-panel { left: 12px; right: 12px; width: auto; }
  .qs-batch-bar { left: 12px; right: 12px; transform: none; width: auto; flex-wrap: wrap; justify-content: center; max-width: none; white-space: normal; }
  .qs-batch-bar.show { animation: batchBarInMobile 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
  @keyframes batchBarInMobile {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .qs-content { padding: 16px; }
  .file-toolbar { gap: 8px; }
  .file-toolbar-left, .file-toolbar-right { flex-wrap: wrap; }
  .qs-modal { padding: 20px; }
  .share-item { flex-direction: column; align-items: flex-start; gap: 10px; }
  .qs-search-wrap { width: auto; max-width: 100%; flex: 1; min-width: 0; }
  .action-btn { width: 36px; height: 36px; }
}

@media (max-width: 480px) {
  .stats-overview { grid-template-columns: repeat(2, 1fr); }
  .file-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .grid-item { padding: 12px; }
  .grid-item-icon { font-size: 36px; }
  .qs-login-card { padding: 32px 24px; }
}

/* ========== Empty State ========== */
.empty {
  padding: 80px 24px;
  text-align: center;
  color: var(--text-secondary);
  animation: fadeIn 0.4s ease;
}

/* ========== Favorites, Recent, Search Results Containers ========== */
.favorites-list,
.recent-list,
.search-results-list {
  padding: 16px;
}
.empty-icon {
  font-size: 64px;
  margin-bottom: 20px;
  opacity: 0.35;
  filter: grayscale(0.3);
}
.empty p {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: -0.2px;
}

/* ==================== Advanced Search ==================== */

.qs-adv-search-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  padding: 6px 10px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.2s;
  margin-left: 8px;
}
.qs-adv-search-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-light);
}

.qs-adv-search-panel {
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 100;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin: 4px 0 0;
  width: 440px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12);
}
.qs-adv-search-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}
.qs-adv-search-row label {
  width: 80px;
  font-size: 13px;
  color: var(--text-secondary);
  flex-shrink: 0;
}
.qs-adv-search-row select,
.qs-adv-search-row input {
  flex: 1;
  min-width: 0;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
}
.qs-adv-search-row input[type="date"] {
  min-width: 140px;
}
.qs-adv-search-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

/* ==================== Batch Rename ==================== */

.qs-rename-modes {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.qs-rename-mode {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
}
.qs-rename-mode.active {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
.qs-rename-mode input { display: none; }
.qs-rename-panel { margin-bottom: 8px; }
.qs-rename-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin: 4px 0 8px;
}
.qs-rename-preview {
  max-height: 200px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 10px;
  margin: 10px 0;
  font-size: 13px;
}
.qs-rename-preview-title {
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--text-secondary);
}
.qs-rename-preview-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 3px 0;
}
.qs-rename-old {
  color: var(--text-secondary);
  text-decoration: line-through;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.qs-rename-arrow { color: var(--text-secondary); }
.qs-rename-new {
  color: var(--primary);
  font-weight: 500;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.qs-rename-preview-more {
  color: var(--text-secondary);
  font-size: 12px;
  margin-top: 4px;
}

/* ==================== Favorites & Recent ==================== */

.fav-item,
.recent-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.fav-item:hover,
.recent-item:hover {
  background: var(--surface);
}
.fav-info,
.recent-info {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  cursor: pointer;
  min-width: 0;
}
.fav-name,
.recent-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.fav-path,
.recent-path {
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.fav-actions {
  flex-shrink: 0;
}
.recent-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  flex-shrink: 0;
  margin-left: 12px;
}
.recent-action {
  font-size: 12px;
  color: var(--primary);
}
.recent-time {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ==================== Search Results ==================== */

.search-result-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.15s;
}
.search-result-item:hover {
  background: var(--surface);
}
.search-result-info {
  flex: 1;
  min-width: 0;
}
.search-result-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.search-result-path {
  font-size: 12px;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.search-result-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  font-size: 12px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

/* ==================== QR Code ==================== */

.qs-share-qr {
  display: flex;
  justify-content: center;
  padding: 12px 0;
}
.qs-share-qr canvas,
.qs-share-qr img {
  border-radius: 8px;
}
.qs-qr-fallback {
  text-align: center;
  padding: 16px;
}
.qs-qr-fallback i {
  margin-bottom: 8px;
}
.qs-qr-hint {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ==================== Toggle Switch ==================== */

.qs-toggle-switch {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}
.qs-toggle-track {
  width: 40px;
  height: 22px;
  border-radius: 11px;
  background: var(--border);
  position: relative;
  transition: background 0.2s;
}
.qs-toggle-track.on {
  background: var(--primary);
}
.qs-toggle-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform 0.2s;
}
.qs-toggle-track.on .qs-toggle-thumb {
  transform: translateX(18px);
}

/* ==================== Favorite Action Button ==================== */

.action-fav {
  color: var(--text-secondary) !important;
}
.action-fav:hover {
  color: var(--warning) !important;
}

/* ==================== Hidden Utility ==================== */

.hidden {
  display: none !important;
}

/* ==================== Small Button ==================== */

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

/* ==================== Highlight Animation ==================== */

.file-item.highlight,
.grid-item.highlight {
  animation: highlightPulse 3s ease-out;
}
@keyframes highlightPulse {
  0% { background: rgba(0, 122, 255, 0.15); }
  100% { background: transparent; }
}

/* ========== Settings Sub-Page ========== */
.settings-page {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 4px;
}
.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}
.settings-header h2 {
  font-size: 20px;
  font-weight: 700;
  margin: 0;
}

/* ====== File Info Modal ====== */
.file-info-modal {
  max-width: 520px;
  width: 90vw;
  max-height: 80vh;
  overflow-y: auto;
}
.info-grid {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.info-row {
  display: flex;
  align-items: baseline;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light, rgba(128,128,128,0.12));
  font-size: 13px;
  line-height: 1.5;
}
.info-row:last-child {
  border-bottom: none;
}
.info-label {
  width: 90px;
  flex-shrink: 0;
  color: var(--text-secondary);
  font-size: 12px;
}
.info-value {
  flex: 1;
  min-width: 0;
  word-break: break-word;
  color: var(--text);
}
.info-section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin: 16px 0 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-light, rgba(128,128,128,0.12));
}