:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --panel: #ffffff;
  --control-bg: #ffffff;
  --panel-soft: #f8fbff;
  --text: #172033;
  --muted: #657086;
  --line: #dfe4ef;
  --primary: #1677ff;
  --primary-dark: #0958d9;
  --danger: #d92d20;
  --danger-dark: #b42318;
  --hero-start: #eef5ff;
  --hero-end: #ffffff;
  --notice-code-bg: #f0f3f8;
  --thumb-bg: #eef1f6;
  --progress-bg: #edf1f7;
  --toggle-checked-bg: #f7fbff;
  --toggle-checked-border: #b7d4ff;
  --badge-bg: #edf5ff;
  --preview-bg: #111827;
  --shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f172a;
  --panel: #111827;
  --control-bg: #0b1220;
  --panel-soft: #121f35;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --line: #334155;
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --danger: #ef4444;
  --danger-dark: #dc2626;
  --hero-start: #172554;
  --hero-end: #0f172a;
  --notice-code-bg: #1f2937;
  --thumb-bg: #1f2937;
  --progress-bg: #1f2937;
  --toggle-checked-bg: #10233f;
  --toggle-checked-border: #2563eb;
  --badge-bg: #132744;
  --preview-bg: #020617;
  --shadow: 0 12px 34px rgba(0, 0, 0, 0.36);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--control-bg);
  color: var(--text);
  padding: 10px 14px;
  cursor: pointer;
  transition: 0.15s ease;
}

button:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

button.primary:hover:not(:disabled) {
  background: var(--primary-dark);
  color: #fff;
}

button.danger {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
}

button.danger:hover:not(:disabled) {
  background: var(--danger-dark);
  color: #fff;
}

.app-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 34px min(5vw, 56px);
  background: linear-gradient(135deg, var(--hero-start) 0%, var(--hero-end) 72%);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.08em;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 44px);
}

.subtitle {
  margin: 12px 0 0;
  color: var(--muted);
}

main {
  width: min(1480px, calc(100% - 40px));
  margin: 24px auto 60px;
}

.notice,
.panel,
.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.notice {
  padding: 16px 18px;
  color: var(--muted);
  line-height: 1.7;
}

.notice code {
  color: var(--text);
  background: var(--notice-code-bg);
  border-radius: 6px;
  padding: 2px 6px;
  word-break: break-all;
}

.panel {
  margin-top: 18px;
  padding: 14px;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  align-items: start;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  align-items: end;
}

.action-row {
  margin-top: 24px;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 14px;
}

.control-field {
  flex: 0 0 auto;
  min-width: 0;
  max-width: none;
}

.folder-field {
  width: 300px;
  margin-left: auto;
  text-align: right;
  justify-items: end;
}

.theme-field {
  width: 130px;
}

.control-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

input[type="search"],
input[type="text"],
.delete-dialog input,
select {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 10px;
  background: var(--control-bg);
  color: var(--text);
}

.exclude-field {
  width: 150px;
}

.exclude-name-field {
  width: 260px;
  display: grid;
  gap: 6px;
  position: relative;
}

.exclude-field input,
.exclude-name-field input {
  width: 100%;
  height: 40px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
}

.exclude-name-row {
  display: flex;
  gap: 6px;
}

.exclude-name-row input {
  min-width: 0;
  flex: 1 1 auto;
}

#excludeNumberNameBtn {
  flex: 0 0 auto;
  min-height: 40px;
  padding: 7px 10px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 700;
}

.field-hint {
  position: absolute;
  top: calc(100% + 2px);
  left: 0;
  min-height: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
  white-space: nowrap;
}

.field-hint.error {
  color: var(--danger);
}

.control-field select {
  width: 100%;
  min-width: 0;
  height: 40px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
}

#typeFilter {
  width: 120px;
}

#minSizeFilter {
  width: 140px;
}

#sortSelect {
  width: 190px;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.button-group button {
  min-height: 40px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 700;
  padding: 8px 12px;
}

.toggle-field {
  width: auto;
}

.confirm-toggle {
  width: auto;
}

.toggle-box {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--control-bg);
  color: var(--text);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

.toggle-box input {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
  flex: 0 0 auto;
}

.toggle-box:has(input:checked) {
  border-color: var(--toggle-checked-border);
  background: var(--toggle-checked-bg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.stat {
  padding: 16px;
  min-width: 0;
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 7px;
}

.stat strong {
  display: block;
  font-size: 20px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.progress-panel {
  box-shadow: none;
}

.progress-title,
.toolbar,
.pager {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.pager-size-field {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.pager-size-field select {
  width: 86px;
  height: 36px;
  min-width: 0;
  border-radius: 9px;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 8px;
}

.progress-right {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

#stopProgressBtn {
  min-height: 32px;
  padding: 5px 12px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
}

.progress-bar {
  height: 8px;
  background: var(--progress-bg);
  border-radius: 999px;
  overflow: hidden;
  margin-top: 10px;
}

#progressFill {
  height: 100%;
  width: 20%;
  background: linear-gradient(90deg, var(--primary), #69b1ff);
  border-radius: inherit;
  animation: pulse 1.2s ease-in-out infinite alternate;
}

@keyframes pulse {
  from { transform: translateX(-35%); }
  to { transform: translateX(430%); }
}

.media-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  align-items: start;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow);
  position: relative;
  align-self: start;
}

.card.selected {
  border-color: var(--danger);
  box-shadow: 0 0 0 2px rgba(217, 45, 32, 0.16), var(--shadow);
}

.card.deleted-slot {
  height: 0;
  min-height: 0;
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  pointer-events: none;
}

.thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #050816;
  display: grid;
  place-items: center;
  overflow: hidden;
  cursor: zoom-in;
}

.thumb-media-frame {
  position: relative;
  width: 100%;
  height: 100%;
  background: #050816;
  overflow: hidden;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.thumb-video .thumb-video-el {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  object-fit: contain !important;
  object-position: center center !important;
  display: block;
  background: #050816;
}

.thumb .placeholder {
  color: var(--muted);
  font-weight: 700;
}

.file-thumb,
.file-preview {
  display: grid;
  place-items: center;
  gap: 8px;
  color: var(--muted);
  text-align: center;
}

.file-thumb {
  width: 100%;
  height: 100%;
  padding: 18px;
}

.file-thumb-name {
  max-width: 100%;
  color: var(--text);
  font-size: 15px;
  font-weight: 800;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.file-thumb-icon {
  font-size: 46px;
  line-height: 1;
}

.file-thumb-ext {
  max-width: 90%;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--control-bg);
  color: var(--text);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.file-preview {
  min-height: 280px;
}

.file-preview-icon {
  font-size: 86px;
  line-height: 1;
}

.file-preview-ext {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--control-bg);
  color: var(--text);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.card-body {
  padding: 12px;
}

.card-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--text);
  font-size: 16px;
  font-weight: 700;
}

.card-summary span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.card-summary span:last-child {
  color: var(--muted);
  flex: 0 0 auto;
}

.duplicate-note {
  margin-top: 8px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.card-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
}

.card-actions label {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--text);
}

.card-actions .direct-delete {
  padding: 7px 10px;
  border-radius: 8px;
  white-space: nowrap;
}

.badge {
  border-radius: 999px;
  padding: 4px 8px;
  background: var(--badge-bg);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.preview-dialog,
.delete-dialog {
  border: none;
  border-radius: 18px;
  width: min(92vw, 980px);
  max-height: 88vh;
  background: var(--panel);
  color: var(--text);
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.28);
}

.preview-dialog::backdrop,
.delete-dialog::backdrop {
  background: rgba(7, 13, 26, 0.58);
}

.close-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  z-index: 2;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: none;
  background: rgba(15, 23, 42, 0.55);
  color: #fff;
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  padding: 0;
  opacity: 0.78;
}

.close-btn:hover:not(:disabled) {
  background: rgba(15, 23, 42, 0.8);
  color: #fff;
  opacity: 1;
}

.preview-body {
  display: grid;
  place-items: center;
  min-height: 300px;
  background: var(--preview-bg);
  border-radius: 12px;
  overflow: hidden;
}

.preview-body img,
.preview-body video {
  max-width: 100%;
  max-height: 70vh;
}

.preview-info-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-top: 12px;
}

.preview-meta {
  min-width: 0;
  flex: 1 1 auto;
  color: var(--muted);
  line-height: 1.7;
  word-break: break-all;
}

.preview-actions {
  display: flex;
  justify-content: flex-end;
  flex: 0 0 auto;
}

.preview-actions button {
  min-height: 40px;
  border-radius: 10px;
  font-weight: 700;
}

@media (max-width: 720px) {
  .preview-info-row {
    display: grid;
  }

  .preview-actions {
    justify-content: stretch;
  }

  .preview-actions button {
    width: 100%;
  }
}

.delete-dialog {
  width: min(92vw, 560px);
}

.delete-dialog menu {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
}

.empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  background: var(--panel);
  border: 1px dashed var(--line);
  border-radius: 18px;
  padding: 50px 20px;
}

@media (max-width: 860px) {
  .app-header,
  .toolbar {
    display: grid;
  }

  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  main {
    width: min(100% - 24px, 1480px);
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  input[type="search"],
  select {
    min-width: 100%;
  }
}