:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --soft: #f8fafb;
  --line: #d9e0e8;
  --text: #17202a;
  --muted: #667384;
  --primary: #1769e0;
  --primary-dark: #0f55b8;
  --danger: #c73737;
  --accent: #0f766e;
  --side: #17202a;
  --shadow: 0 12px 32px rgba(23, 32, 42, .08);
  --shadow-strong: 0 18px 48px rgba(15, 23, 42, .16);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  background:
    linear-gradient(180deg, #f7f9fc 0, var(--bg) 260px),
    var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  letter-spacing: 0;
}

.app-shell {
  width: 100%;
  min-height: 100vh;
  display: flex;
}

body.login-mode .app-shell {
  display: none;
}

::selection {
  background: rgba(23, 105, 224, .16);
}

button, input, textarea {
  font: inherit;
}

button, .upload {
  height: 36px;
  border: 1px solid var(--primary);
  border-radius: 7px;
  padding: 0 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  white-space: nowrap;
}

button:hover, .upload:hover { background: var(--primary-dark); }

button.ghost, .ghost {
  border-color: var(--line);
  background: #fff;
  color: var(--text);
}

button.ghost:hover, .ghost:hover { background: var(--soft); }

button.danger, .danger {
  border-color: #efb9b9;
  background: #fff;
  color: var(--danger);
}

button.danger:hover { background: #fff7f7; }

input, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 9px 11px;
  background: #fff;
  color: var(--text);
}

h1, h2, p { margin: 0; }
h1 { font-size: 24px; line-height: 1.2; }
h2 { font-size: 18px; line-height: 1.3; }
code { background: #eef2f7; padding: 1px 5px; border-radius: 4px; }

.sidebar {
  width: 232px;
  min-height: 100vh;
  background: var(--side);
  color: #fff;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.brand {
  min-height: 48px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.brand b {
  display: block;
  font-size: 18px;
  line-height: 1.1;
}

.brand small {
  display: block;
  margin-top: 3px;
  color: #aeb8c6;
  font-size: 11px;
  font-weight: 500;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: #fff;
  display: block;
  object-fit: contain;
}

.nav {
  width: 100%;
  border-color: transparent;
  background: transparent;
  color: #dbe3ed;
  justify-content: flex-start;
}

.nav:hover, .nav.active {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(255, 255, 255, .08);
  color: #fff;
}

.nav-icon {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, .12);
  font-size: 12px;
  font-weight: 700;
}

.side-spacer { flex: 1; }
.sidebar .ghost { width: 100%; border-color: rgba(255, 255, 255, .16); background: rgba(255,255,255,.06); color: #fff; }
.sidebar .ghost:hover { background: rgba(255,255,255,.12); }
.sidebar .danger { color: #ffdede; }

main {
  flex: 1;
  min-width: 0;
}

.topbar {
  min-height: 74px;
  padding: 16px 24px;
  background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 5;
}

#userLine, .hint, .section-title p {
  color: var(--muted);
  margin-top: 5px;
}

.actions, .pathbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.upload input, .upload-fab input { display: none; }

.panel {
  display: none;
  padding: 18px;
}

.panel.active { display: block; }

.overview {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.metric {
  min-height: 78px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
  padding: 14px;
  display: grid;
  align-content: center;
  gap: 4px;
}

.metric span {
  color: var(--muted);
  font-size: 12px;
}

.metric strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 20px;
  line-height: 1.2;
}

.pathbar {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 12px;
  margin-bottom: 14px;
}

.path-input {
  flex: 1;
  min-width: 260px;
  display: flex;
  align-items: center;
  gap: 0;
}

.path-nav-wrap {
  align-items: flex-start;
}

.path-crumbs {
  min-width: 0;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.path-crumbs button {
  max-width: 220px;
  height: 32px;
  border-color: var(--line);
  background: #fff;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
}

.path-crumbs button:first-child {
  border-color: #c8d7f2;
  color: var(--primary);
}

.path-crumbs button:hover {
  background: var(--soft);
  color: var(--primary);
}

.path-crumbs button + button::before {
  content: "/";
  margin-right: 6px;
  color: var(--muted);
}

.path-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-left: auto;
}

.file-shell {
  overflow-x: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 88px;
}

.file-shell table {
  overflow: hidden;
}

.table-head {
  min-width: 780px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: linear-gradient(180deg, #fff, #fbfcfd);
}

.table-head h2 {
  font-size: 16px;
}

.table-head p, #selectionHint {
  color: var(--muted);
  font-size: 12px;
}

#selectionHint {
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  background: #fff;
}

table {
  width: 100%;
  min-width: 780px;
  border-collapse: collapse;
}

th, td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

th {
  color: var(--muted);
  background: var(--soft);
  font-size: 12px;
  font-weight: 600;
}

tbody tr:hover td { background: #f8fbff; }
tbody tr {
  transition: background .14s ease;
}
th:nth-child(2), td:nth-child(2) { white-space: normal; }

.download-btn {
  height: 30px;
  padding: 0 12px;
  border-color: #d6e3ff;
  background: #f3f7ff;
  color: #1359c8;
}

.download-btn:hover {
  background: #e9f1ff;
}

.file-name {
  max-width: 100%;
  height: auto;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--text);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-content: flex-start;
  min-width: 0;
  text-align: left;
}

.file-name:hover { background: transparent; color: var(--primary); }
.file-main {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.file-main strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 600;
  line-height: 1.25;
}

.file-main small {
  color: var(--muted);
  font-size: 12px;
}

.file-icon {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  flex: 0 0 auto;
  position: relative;
  background: #eef2f7;
  border: 1px solid #d7dfe8;
  box-shadow: inset 0 -8px 0 rgba(23, 32, 42, .03);
}

.file-icon::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 8px;
  width: 17px;
  height: 22px;
  border-radius: 3px;
  background: #667384;
}

.file-icon::after {
  content: "";
  position: absolute;
  right: 10px;
  top: 8px;
  width: 8px;
  height: 8px;
  background: rgba(255,255,255,.75);
  clip-path: polygon(0 0, 100% 100%, 0 100%);
}

.file-icon.folder {
  background: #fff7d6;
  border-color: #f4d06f;
}

.file-icon.folder::before {
  left: 7px;
  top: 12px;
  width: 24px;
  height: 17px;
  border-radius: 3px;
  background: #e5a700;
}

.file-icon.folder::after {
  left: 9px;
  top: 8px;
  width: 13px;
  height: 7px;
  border-radius: 3px 3px 0 0;
  background: #f4c430;
  clip-path: none;
}

.file-icon.image::before { background: #168aad; }
.file-icon.video::before { background: #7c3aed; }
.file-icon.audio::before { background: #d97706; }
.file-icon.archive::before { background: #8b5e34; }
.file-icon.pdf::before { background: #dc2626; }
.file-icon.doc::before { background: #2563eb; }
.file-icon.sheet::before { background: #16a34a; }
.file-icon.slide::before { background: #ea580c; }
.file-icon.code::before { background: #334155; }
.file-icon.text::before { background: #64748b; }

.empty {
  display: none;
  padding: 48px 12px;
  text-align: center;
  color: var(--muted);
}

.auth-panel {
  min-height: calc(100vh - 128px);
  display: grid;
  place-items: center;
  align-content: center;
  gap: 16px;
}

.auth-card, .form {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.auth-card.compact { display: grid; gap: 10px; }
.section-title { margin-bottom: 16px; }

.qr-box {
  width: min(560px, 96vw);
  height: min(640px, 74vh);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  display: grid;
  place-items: center;
  padding: 0;
  margin-inline: auto;
  overflow: hidden;
  box-shadow: var(--shadow);
}

#authFrame {
  width: min(300px, 82vw);
  height: min(300px, 82vw);
  display: none;
  background: #fff;
  border: 0;
  image-rendering: pixelated;
}

#qrEmpty {
  min-height: 180px;
  display: grid;
  place-items: center;
  color: var(--muted);
  text-align: center;
}

.qr-status {
  width: min(560px, 96vw);
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  place-items: center;
  padding: 8px 12px;
  background: #fff;
  color: var(--muted);
  text-align: center;
}

.auth-buttons {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.settings-grid {
  display: grid;
  grid-template-columns: minmax(320px, 720px) minmax(260px, 360px);
  gap: 14px;
  align-items: start;
}

.settings-grid.single {
  grid-template-columns: minmax(320px, 720px);
}

.form {
  display: grid;
  gap: 13px;
}

.settings-logout {
  justify-self: start;
}

.form label, dialog label {
  display: grid;
  gap: 6px;
  color: var(--muted);
}

dialog {
  border: 0;
  border-radius: 8px;
  width: min(900px, 92vw);
  padding: 18px;
  box-shadow: 0 18px 70px rgba(15, 23, 42, .25);
}

dialog::backdrop { background: rgba(15, 23, 42, .34); }
dialog h2 { margin-bottom: 14px; }
dialog footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }
textarea {
  height: 55vh;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.image-preview, .video-preview, .audio-preview, .text-preview {
  width: min(1180px, 96vw);
  max-width: 96vw;
  padding: 0;
  overflow: hidden;
}

.image-preview header, .video-preview header, .audio-preview header, .text-preview header {
  min-height: 58px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.image-preview h2, .video-preview h2, .audio-preview h2, .text-preview h2 {
  margin: 0;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.preview-tools button {
  height: 32px;
  padding: 0 10px;
}

.preview-tools button:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.preview-stage {
  height: min(78vh, 820px);
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #101820;
  overflow: auto;
  cursor: grab;
  user-select: none;
}

.preview-stage.is-dragging { cursor: grabbing; }

.preview-stage img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transform-origin: center center;
}

.preview-stage img.is-zoomed {
  align-self: flex-start;
  cursor: grab;
}

.preview-stage.is-dragging img,
.preview-stage.is-dragging img.is-zoomed {
  cursor: grabbing;
}

.video-stage {
  height: min(76vh, 780px);
  min-height: 320px;
  display: grid;
  place-items: center;
  background: #101820;
}

.video-stage video {
  width: 100%;
  height: 100%;
  max-height: min(76vh, 780px);
  background: #000;
}

.audio-preview {
  width: min(760px, 94vw);
}

.audio-stage {
  min-height: 260px;
  display: grid;
  place-items: center;
  gap: 20px;
  padding: 34px;
  background: linear-gradient(180deg, #f8fafb, #eef3f8);
}

.audio-art {
  width: 118px;
  height: 118px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: #17202a;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  box-shadow: 0 16px 38px rgba(23, 32, 42, .18);
}

.audio-stage audio {
  width: min(620px, 100%);
}

.text-preview {
  width: min(980px, 94vw);
}

.text-content {
  height: min(72vh, 720px);
  margin: 0;
  padding: 18px;
  overflow: auto;
  background: #0f1720;
  color: #e6edf3;
  font: 13px/1.65 ui-monospace, SFMono-Regular, Consolas, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.share-modal {
  width: min(760px, 94vw);
}

.share-list {
  display: grid;
  gap: 14px;
}

.share-list label {
  display: grid;
  gap: 7px;
  color: var(--muted);
}

.share-link {
  width: 100%;
  height: auto;
  min-height: 58px;
  max-height: 130px;
  resize: vertical;
  text-align: left;
  white-space: normal;
  word-break: break-all;
  border-color: var(--line);
  background: var(--soft);
  color: var(--primary);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  line-height: 1.45;
}

.share-link:hover, .share-link:focus {
  background: #eef5ff;
}

.image-preview footer, .video-preview footer, .audio-preview footer {
  margin: 0;
  padding: 12px 14px;
  border-top: 1px solid var(--line);
}

.pager {
  min-width: 780px;
  min-height: 54px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #fff;
}

.pager-size {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.pager-size select {
  width: auto;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 30px 0 12px;
  background: #fff;
  color: var(--text);
}

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

.pager-actions {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.pager-actions button {
  height: 32px;
  border-radius: 999px;
  padding: 0 11px;
}

.pager-actions button:disabled {
  opacity: .45;
  cursor: not-allowed;
}

.select-col {
  width: 46px;
  text-align: center;
}

th.select-col, td.select-col {
  padding-left: 14px;
  padding-right: 8px;
}

.select-col input[type="checkbox"], #selectAll {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}

.select-col input[type="checkbox"]:disabled, #selectAll:disabled {
  cursor: not-allowed;
  opacity: .45;
}

.image-preview, .video-preview, .audio-preview, .text-preview {
  border: 1px solid rgba(209, 217, 226, .72);
  border-radius: 24px;
  background: rgba(250, 250, 252, .96);
  color: rgb(17, 24, 39);
  box-shadow: 0 24px 80px rgba(15, 23, 42, .28);
}

.image-preview.is-maximized {
  width: 100vw;
  max-width: 100vw;
  height: 100vh;
  max-height: 100vh;
  border-radius: 0;
}

.image-preview::backdrop, .video-preview::backdrop, .audio-preview::backdrop, .text-preview::backdrop {
  background: rgba(17, 24, 39, .42);
  backdrop-filter: blur(12px);
}

.image-preview header, .video-preview header, .audio-preview header, .text-preview header {
  min-height: 58px;
  padding: 10px 12px;
  background: rgba(250, 250, 252, .86);
  border-bottom: 1px solid rgba(216, 222, 231, .78);
  backdrop-filter: blur(18px);
}

.image-preview h2, .video-preview h2, .audio-preview h2, .text-preview h2 {
  font-size: 15px;
  font-weight: 600;
}

.preview-tools {
  gap: 6px;
}

.preview-tools button, .image-preview footer button, .video-preview footer button, .audio-preview footer button {
  min-width: 44px;
  height: 34px;
  border-radius: 999px;
  padding: 0 12px;
  border-color: rgba(205, 213, 224, .9);
  background: rgba(255, 255, 255, .82);
  color: rgb(17, 24, 39);
}

.preview-tools button:hover, .image-preview footer button:hover, .video-preview footer button:hover, .audio-preview footer button:hover {
  background: rgb(255, 255, 255);
}

.image-preview footer button:not(.ghost), .video-preview footer button:not(.ghost), .audio-preview footer button:not(.ghost) {
  border-color: rgb(0, 122, 255);
  background: rgb(0, 122, 255);
  color: rgb(255, 255, 255);
}

.image-preview footer, .video-preview footer, .audio-preview footer {
  background: rgba(250, 250, 252, .9);
  border-top: 1px solid rgba(216, 222, 231, .78);
  backdrop-filter: blur(18px);
}

.preview-stage {
  background: rgb(3, 3, 3);
  display: block;
  overscroll-behavior: contain;
  touch-action: none;
  -webkit-user-select: none;
}

.preview-stage.is-zoomed {
  cursor: grab;
}

.preview-canvas {
  width: 100%;
  height: 100%;
  min-width: 100%;
  min-height: 100%;
  display: grid;
  place-items: center;
}

.preview-stage img {
  display: block;
  flex: 0 0 auto;
  max-width: none;
  max-height: none;
  align-self: center;
  justify-self: center;
}

.preview-stage img.is-zoomed {
  margin: 0;
  max-width: none;
  max-height: none;
  align-self: center;
  justify-self: center;
}

.image-preview.is-maximized .preview-stage {
  height: calc(100vh - 118px);
  min-height: 0;
}

.video-stage {
  background: rgb(3, 3, 3);
}

.video-stage video {
  object-fit: contain;
}

.audio-stage {
  background: rgb(245, 246, 250);
}

.text-content {
  background: rgb(17, 19, 24);
  color: rgb(243, 244, 246);
}

.login-overlay {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 28px;
  background:
    linear-gradient(135deg, rgba(23, 105, 224, .12), rgba(15, 118, 110, .14)),
    radial-gradient(circle at 18% 18%, rgba(255, 255, 255, .85), rgba(255, 255, 255, 0) 32%),
    #eef3f8;
  z-index: 40;
}

.login-overlay.active {
  display: grid;
}

.login-dialog {
  width: min(430px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 18px 70px rgba(15, 23, 42, .16);
  padding: 28px;
  display: grid;
  gap: 14px;
}

.login-dialog label {
  display: grid;
  gap: 6px;
  color: var(--muted);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 4px;
}

.login-brand .brand-mark {
  width: 44px;
  height: 44px;
  background: #fff;
}

.login-brand h1 {
  font-size: 24px;
}

.login-brand p {
  color: var(--muted);
  margin-top: 2px;
}

.form-error {
  min-height: 20px;
  color: var(--danger);
}

.context-menu {
  position: fixed;
  z-index: 60;
  min-width: 156px;
  display: none;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 18px 42px rgba(15, 23, 42, .18);
}

.context-menu.active {
  display: grid;
  gap: 2px;
}

.context-menu button {
  width: 100%;
  height: 34px;
  justify-content: flex-start;
  border: 0;
  background: transparent;
  color: var(--text);
  border-radius: 6px;
}

.context-menu button:hover {
  background: var(--soft);
}

.context-menu button.danger {
  color: var(--danger);
}

.upload-progress {
  position: fixed;
  right: 18px;
  bottom: 84px;
  width: min(360px, calc(100vw - 36px));
  display: none;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(15, 23, 42, .18);
  z-index: 30;
}

.upload-progress.active {
  display: block;
}

.upload-progress-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
  color: var(--text);
}

.upload-progress-head span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-progress-head strong {
  color: var(--primary);
}

.upload-bar {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: #edf2f7;
}

.upload-bar span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
  transition: width .18s ease;
}

.upload-fab {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 54px;
  height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-size: 34px;
  font-weight: 300;
  line-height: 1;
  box-shadow: var(--shadow-strong);
  z-index: 28;
}

.upload-fab:hover {
  background: var(--primary-dark);
}

#toast {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(.96);
  max-width: 520px;
  display: block;
  opacity: 0;
  pointer-events: none;
  background: var(--side);
  color: #fff;
  border-radius: 8px;
  padding: 14px 18px;
  box-shadow: var(--shadow-strong);
  z-index: 80;
  transition: opacity .16s ease, transform .16s ease;
}

#toast.active {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

@media (max-width: 860px) {
  body, .app-shell { display: block; }
  body.login-mode .app-shell { display: none; }
  .sidebar {
    width: 100%;
    min-height: 0;
    flex-direction: row;
    overflow-x: auto;
    padding: 10px;
  }
  .brand { margin: 0; flex: 0 0 auto; }
  .brand span:last-child, .side-spacer { display: none; }
  .nav, .sidebar .ghost { width: auto; flex: 0 0 auto; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .actions, .pathbar { width: 100%; }
  .pathbar button, .actions button { flex: 1 1 auto; }
  .overview, .settings-grid { grid-template-columns: 1fr; }
  .path-input { flex-basis: 100%; min-width: 0; }
  .path-actions { width: 100%; }
  .path-crumbs button { max-width: 160px; }
  .auth-panel { min-height: calc(100vh - 150px); }
  .qr-box { width: 100%; height: min(420px, 60vh); }
  .qr-status { width: 100%; }
  table { font-size: 13px; }
  th:nth-child(4), td:nth-child(4) { display: none; }
  .pager {
    min-width: 780px;
    align-items: flex-start;
    flex-direction: column;
  }
  .pager-info {
    text-align: left;
  }
  .login-overlay { padding: 16px; }
  .login-dialog { padding: 22px; }
  .preview-stage, .video-stage { height: 66vh; min-height: 260px; }
  .audio-stage { min-height: 220px; padding: 24px; }
  .text-content { height: 66vh; }
  .preview-tools { width: 100%; justify-content: flex-start; }
  .upload-progress { right: 12px; bottom: 82px; width: calc(100vw - 24px); }
  .upload-fab { right: 12px; bottom: 12px; }
}