:root {
  --bg: #0d0f12;
  --panel: #15181c;
  --panel-hover: #1b1f24;
  --line: #2a2f36;
  --text: #eceff2;
  --muted: #9098a2;
  --accent: #7db59f;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

button,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

svg {
  width: 1.2rem;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(13, 15, 18, 0.94);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 12px 0;
  gap: 8px;
}

.search-box {
  display: flex;
  align-items: center;
  width: 100%;
  height: 42px;
  padding: 0 13px;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--muted);
}

.search-box:focus-within {
  border-color: #56616d;
}

.search-box input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.install-button {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 12px;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
  font-size: 0.76rem;
}

.install-button:hover {
  background: var(--panel-hover);
}

.install-button[hidden] {
  display: none;
}

.install-banner {
  border-bottom: 1px solid var(--line);
  background: #111418;
}

.install-banner[hidden] {
  display: none;
}

.install-banner-inner {
  display: flex;
  align-items: center;
  width: min(920px, calc(100% - 32px));
  min-height: 58px;
  margin: 0 auto;
  gap: 10px;
}

.install-banner-copy {
  min-width: 0;
  flex: 1;
}

.install-banner-copy strong,
.install-banner-copy small {
  display: block;
}

.install-banner-copy strong {
  font-size: 0.84rem;
}

.install-banner-copy small {
  color: var(--muted);
  font-size: 0.72rem;
}

.install-close {
  display: grid;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  place-items: center;
  border: 0;
  border-radius: 7px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.install-close:hover {
  background: #242a31;
  color: var(--text);
}

.main-shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 20px 0 60px;
}

.browser-panel {
  overflow: hidden;
  min-height: 260px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
}

.browser-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 7px 8px 7px 12px;
  gap: 8px;
  border-bottom: 1px solid var(--line);
}

.breadcrumbs {
  display: flex;
  align-items: center;
  min-width: 0;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}

.breadcrumbs::-webkit-scrollbar {
  display: none;
}

.crumb {
  flex: 0 0 auto;
  padding: 6px 7px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
}

.crumb:last-of-type {
  color: var(--text);
}

.crumb-separator {
  color: #545b64;
}

.icon-button,
.tool-button,
.viewer-back {
  display: inline-grid;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #1a1e23;
  color: var(--text);
  cursor: pointer;
}

.icon-button {
  width: 36px;
  height: 36px;
}

.icon-button:hover,
.tool-button:hover {
  background: #232830;
}

.status {
  display: none;
  padding: 54px 20px;
  color: var(--muted);
  text-align: center;
}

.status.visible {
  display: block;
}

.status strong,
.status small {
  display: block;
}

.status strong {
  margin-bottom: 4px;
  color: var(--text);
}

.entry-grid {
  display: grid;
}

.entry-card {
  display: flex;
  align-items: stretch;
  min-width: 0;
  border-bottom: 1px solid var(--line);
  transition: background 120ms ease;
}

.entry-card:last-child {
  border-bottom: 0;
}

.entry-card:hover {
  background: var(--panel-hover);
}

.entry-main {
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 62px;
  flex: 1;
  padding: 9px 8px 9px 12px;
  gap: 11px;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.entry-icon {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  color: #87909a;
}

.entry-icon.folder {
  color: #8ebaa9;
}

.locked-folder .entry-icon.folder {
  color: #d3b36d;
}

.entry-icon.pdf {
  color: #c78a7a;
}

.entry-copy {
  min-width: 0;
}

.entry-name,
.entry-meta {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.entry-name {
  margin-bottom: 2px;
  font-size: 0.86rem;
  font-weight: 600;
}

.entry-meta {
  color: var(--muted);
  font-size: 0.72rem;
}

.entry-arrow {
  display: none;
  width: 0.95rem;
  margin-left: auto;
  color: var(--muted);
}

.folder-card .entry-arrow {
  display: block;
}

.entry-actions {
  display: flex;
  align-items: center;
  padding-right: 8px;
  gap: 2px;
}

.action-link {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 6px;
  color: var(--muted);
  text-decoration: none;
}

.action-link:hover {
  background: #272d34;
  color: var(--text);
}

.lock-badge {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border-radius: 6px;
  color: #d3b36d;
}

.search-path {
  color: var(--accent);
}

.viewer-body {
  height: 100dvh;
  overflow: hidden;
  background: #0d0f12;
}

.viewer-header {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  height: 58px;
  padding: 8px 12px;
  gap: 10px;
  border-bottom: 1px solid var(--line);
  background: #111418;
}

.viewer-back,
.tool-button,
.viewer-files-button {
  width: 36px;
  height: 36px;
  color: var(--text);
  text-decoration: none;
}

.viewer-files-button {
  display: inline-flex;
  align-items: center;
  width: auto;
  padding: 0 9px;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #1a1e23;
  color: var(--text);
  cursor: pointer;
  font-size: 0.72rem;
}

.viewer-files-button:hover,
.viewer-files-button[aria-expanded="true"] {
  background: #272d34;
}

.viewer-title {
  min-width: 0;
  flex: 1;
}

.viewer-title strong,
.viewer-title small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-title strong {
  font-size: 0.82rem;
}

.viewer-title small {
  color: var(--muted);
  font-size: 0.7rem;
}

.viewer-download,
.viewer-action {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  gap: 6px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  font-size: 0.74rem;
  text-decoration: none;
}

.viewer-action {
  background: transparent;
  cursor: pointer;
}

.viewer-action:disabled {
  cursor: default;
  opacity: 0.35;
}

.viewer-toolbar {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 7px 12px;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  background: #15181c;
}

.file-tree-backdrop {
  position: fixed;
  z-index: 20;
  inset: 0;
  visibility: hidden;
  background: rgba(0, 0, 0, 0.22);
  opacity: 0;
  transition: opacity 140ms ease, visibility 140ms ease;
}

.file-tree-backdrop.open {
  visibility: visible;
  opacity: 1;
}

.file-tree-panel {
  position: fixed;
  z-index: 25;
  top: 68px;
  bottom: 14px;
  left: 12px;
  display: flex;
  width: min(340px, calc(100vw - 24px));
  overflow: hidden;
  flex-direction: column;
  border: 1px solid #353b43;
  border-radius: 9px;
  background: #15181c;
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.38);
  opacity: 0;
  transform: translateX(calc(-100% - 20px));
  transition: transform 160ms ease, opacity 160ms ease;
}

.file-tree-panel.open {
  opacity: 1;
  transform: translateX(0);
}

.file-tree-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 7px 8px 7px 13px;
  border-bottom: 1px solid var(--line);
}

.file-tree-header strong {
  font-size: 0.85rem;
}

.file-tree-close {
  display: grid;
  width: 32px;
  height: 32px;
  place-items: center;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.file-tree-close:hover {
  background: #272d34;
  color: var(--text);
}

.file-tree-search {
  display: flex;
  align-items: center;
  height: 38px;
  margin: 9px;
  padding: 0 9px;
  gap: 7px;
  border: 1px solid #353b43;
  border-radius: 6px;
  background: #0d0f12;
  color: var(--muted);
}

.file-tree-search svg {
  width: 1rem;
}

.file-tree-search input {
  min-width: 0;
  flex: 1;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  font-size: 0.78rem;
}

.file-tree {
  min-height: 0;
  flex: 1;
  overflow: auto;
  padding: 1px 7px 10px;
}

.tree-item {
  min-width: 0;
}

.tree-children {
  display: none;
}

.tree-children.open {
  display: block;
}

.tree-row {
  display: flex;
  align-items: center;
  width: 100%;
  height: 34px;
  min-width: 0;
  padding: 0 7px 0 calc(5px + (var(--tree-depth) * 15px));
  gap: 6px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #cbd1d7;
  cursor: pointer;
  text-align: left;
  text-decoration: none;
}

.tree-row:hover {
  background: #20242a;
}

.tree-row.active {
  background: #29323a;
  color: white;
  box-shadow: inset 3px 0 var(--accent);
}

.tree-row span:last-child {
  overflow: hidden;
  min-width: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.77rem;
}

.tree-chevron,
.tree-chevron-spacer {
  width: 0.8rem;
  min-width: 0.8rem;
}

.tree-chevron {
  color: #808994;
  transition: transform 120ms ease;
}

.tree-row.expanded .tree-chevron {
  transform: rotate(90deg);
}

.tree-entry-icon {
  width: 1rem;
  min-width: 1rem;
  color: #a7afb8;
}

.tree-entry-icon.folder {
  color: #6ea5d8;
}

.tree-row.locked .tree-entry-icon.folder,
.tree-lock-icon {
  color: #d3b36d;
}

.tree-lock-icon {
  width: 0.85rem;
  min-width: 0.85rem;
}

.tree-loading {
  padding: 14px 8px;
  color: var(--muted);
  font-size: 0.75rem;
  text-align: center;
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 5px;
}

.tool-button {
  font-weight: 700;
}

.mode-button {
  width: auto;
  padding: 0 9px;
  gap: 5px;
  font-size: 0.7rem;
}

.mode-button svg {
  width: 1rem;
}

.mode-button[aria-pressed="true"] {
  border-color: #668d7e;
  background: #263c35;
  color: #b9ddce;
}

.tool-button:disabled {
  cursor: default;
  opacity: 0.3;
}

.fit-button {
  width: auto;
  padding: 0 10px;
  font-size: 0.7rem;
}

.page-control {
  display: flex;
  align-items: center;
  color: var(--muted);
  font-size: 0.75rem;
}

.page-control input {
  width: 48px;
  height: 34px;
  margin-right: 6px;
  border: 1px solid var(--line);
  border-radius: 6px;
  outline: 0;
  background: #0d0f12;
  color: var(--text);
  text-align: center;
}

.zoom-value {
  width: 48px;
  color: var(--muted);
  font-size: 0.7rem;
  text-align: center;
}

.viewer-stage {
  position: relative;
  height: calc(100dvh - 110px);
  overflow: auto;
  padding: 22px;
  text-align: center;
  overscroll-behavior: contain;
}

.pdf-pages {
  display: none;
  width: max-content;
  min-width: 100%;
  margin: 0 auto;
  justify-content: center;
  align-items: flex-start;
  gap: 12px;
}

.pdf-pages.visible {
  display: flex;
}

.pdf-pages.continuous {
  width: 100%;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.pdf-page-shell {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  overflow: hidden;
  background: #1a1d21;
}

.pdf-page-shell canvas {
  display: block;
  background: white;
}

.pdf-page-shell:not([data-rendered="true"]) canvas {
  visibility: hidden;
}

.pdf-page-error {
  padding: 30px;
  color: var(--muted);
  font-size: 0.75rem;
}

.viewer-status {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  padding: 24px;
  color: var(--text);
  text-align: center;
}

.viewer-status.hidden {
  display: none;
}

.viewer-status small {
  max-width: 420px;
  margin-top: 6px;
  color: var(--muted);
}

.spinner {
  width: 28px;
  height: 28px;
  margin-bottom: 14px;
  border: 2px solid #3a414a;
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

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

@media (max-width: 620px) {
  .header-inner,
  .install-banner-inner,
  .main-shell {
    width: calc(100% - 20px);
  }

  .header-inner {
    gap: 6px;
  }

  .install-button {
    width: 42px;
    padding: 0;
    justify-content: center;
  }

  .install-button span {
    display: none;
  }

  .install-banner-inner {
    min-height: 54px;
  }

  .main-shell {
    padding-top: 10px;
  }

  .browser-panel {
    border-radius: 8px;
  }

  .entry-name {
    font-size: 0.82rem;
  }

  .entry-main {
    min-height: 60px;
    padding-left: 8px;
  }

  .entry-actions {
    padding-right: 3px;
  }

  .viewer-header {
    height: 54px;
    padding: 7px 8px;
  }

  .viewer-files-button {
    width: 36px;
    padding: 0;
    justify-content: center;
  }

  .viewer-files-button span {
    display: none;
  }

  .file-tree-panel {
    top: 62px;
    bottom: 8px;
    left: 8px;
    width: calc(100vw - 16px);
  }

  .viewer-download,
  .viewer-action {
    width: 36px;
    height: 36px;
    padding: 0;
    justify-content: center;
  }

  .viewer-download span,
  .viewer-action span {
    display: none;
  }

  .viewer-toolbar {
    min-height: 134px;
    flex-wrap: wrap;
    align-content: center;
    padding: 6px;
    gap: 5px 14px;
  }

  .viewer-stage {
    height: calc(100dvh - 188px);
    padding: 10px 5px 24px;
  }

  .mode-button {
    padding: 0 8px;
  }

  .pdf-pages {
    gap: 5px;
  }

  .pdf-pages.continuous {
    gap: 10px;
  }
}