/* SPDX-License-Identifier: AGPL-3.0-only */
:root {
  --bg: #f4f5f7;
  --surface: #ffffff;
  --raised: #fafbfc;
  --text: #1c1f24;
  --muted: #5d6470;
  --border: #d9dde3;
  --accent: #2456c7;
  --accent-soft: #e7eefc;
  --accent-text: #ffffff;
  --danger: #b42318;
  --focus: #2456c7;
  --word: #2b5797;
  --excel: #1e7145;
  --powerpoint: #c2410c;
  --other: #6b7280;
  --radius: 10px;
  --appbar: 48px;
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171b;
    --surface: #1f2228;
    --raised: #252932;
    --text: #e8eaee;
    --muted: #a0a7b3;
    --border: #353a43;
    --accent: #7aa2ff;
    --accent-soft: #24304d;
    --accent-text: #0d1220;
    --danger: #ff8a7a;
    --focus: #7aa2ff;
    --word: #4f7fd0;
    --excel: #3a9a68;
    --powerpoint: #e0672f;
    --other: #8a919c;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; width: 100vw; height: 100vh; overflow: hidden; background: var(--bg); }

/* The editor draws the whole window into one canvas appended to <body>, below
   the app bar. On the home screen it stays alive but hidden. */
body > canvas { position: fixed; top: var(--appbar); left: 0; display: block; width: 100%; height: calc(100% - var(--appbar)); }
body.at-home > canvas { visibility: hidden; }

#app { position: fixed; inset: 0; display: grid; place-items: center; overflow: auto; padding: 24px; }
#app:empty { display: none; }

h1 { font-size: 1.5rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
h3 { font-size: 0.95rem; margin: 0 0 8px; }
p { margin: 0 0 12px; }
a { color: var(--accent); }
code { font: 12px ui-monospace, SFMono-Regular, Menlo, monospace; word-break: break-all; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.hidden { display: none; }
[hidden] { display: none !important; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 8px 30px rgb(0 0 0 / 0.08);
}
.lock { width: min(420px, 100%); }
.lock .brand { margin-bottom: 16px; }
.lock-links { display: flex; flex-direction: column; align-items: center; gap: 6px; margin-top: 4px; }
.lock-links button.link { font-weight: 400; color: var(--accent); font-size: 0.9rem; }
.brand { font-weight: 700; letter-spacing: -0.01em; font-size: 1.05rem; }

button {
  font: inherit;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 12px;
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
button:disabled { opacity: 0.55; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { background: var(--danger); border-color: var(--danger); color: var(--surface); }
button.danger-link { color: var(--danger); }
button.link { border: none; padding: 0; color: var(--text); font-weight: 600; text-align: left; }
button.link:hover { text-decoration: underline; }
.icon-button { display: inline-grid; place-items: center; width: 32px; height: 32px; padding: 0; border-color: transparent; border-radius: 8px; }
.icon-button:hover { background: var(--bg); border-color: var(--border); }
.icon-button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

input {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 10px;
  width: 100%;
}
select {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 6px 8px;
}

.form { display: grid; gap: 12px; }
.field { display: grid; gap: 4px; font-size: 0.9rem; }
.field:has(input[type="checkbox"]) { display: flex; align-items: center; gap: 8px; }
.field input[type="checkbox"] { width: auto; }
.form-error { color: var(--danger); margin: 0; min-height: 1.2em; font-size: 0.9rem; }
.actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.choices { display: grid; gap: 8px; }

.dialog {
  width: min(480px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.dialog::backdrop { background: rgb(0 0 0 / 0.4); }
.dialog .doc-list { max-height: 50vh; overflow: auto; }

.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 24px;
  overflow: auto;
  background: var(--bg);
}

/* Rows in dialogs (version history). */
.doc-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.doc { display: flex; align-items: center; gap: 12px; padding: 10px 8px; border-radius: 8px; }
.doc:hover { background: var(--bg); }
.doc-main { display: grid; flex: 1; min-width: 0; }
.doc-actions { display: flex; gap: 6px; }
.report { margin: 0 0 12px; padding-left: 18px; display: grid; gap: 4px; overflow-wrap: anywhere; }

/* File icons: a coloured page with its format's label. */
.file-icon { flex: none; display: block; }
.file-icon .file-page { fill: var(--surface); stroke: currentColor; stroke-width: 2; }
.file-icon .file-fold { fill: currentColor; opacity: 0.35; }
.file-icon .file-band { fill: currentColor; }
.file-icon .file-label { fill: #fff; font: 700 8.5px system-ui, sans-serif; letter-spacing: 0.02em; }
.file-icon.docx { color: var(--word); }
.file-icon.xlsx { color: var(--excel); }
.file-icon.pptx { color: var(--powerpoint); }
.file-icon.other { color: var(--other); }
.icon { flex: none; display: block; }

/* Home screen. */
.home { position: fixed; inset: 0; z-index: 5; overflow: auto; background: var(--bg); }
.home.dropping { outline: 3px dashed var(--accent); outline-offset: -10px; }
.home-bar {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 56px;
  padding: 0 24px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.home-bar .search { flex: 0 1 420px; margin: 0 auto; padding: 6px 12px; border-radius: 999px; }
.home-bar-actions { display: flex; gap: 6px; }
.home-bar-actions button { border-color: transparent; }
.home-bar-actions button:hover { border-color: var(--border); }
.home-main { width: min(1120px, 100%); margin: 0 auto; padding: 24px 24px 40px; display: grid; gap: 28px; }
.home-section h2 { font-size: 1rem; margin: 0; }
.home-section > h2 { margin-bottom: 12px; }
.banner { padding: 10px 12px; border: 1px solid var(--danger); border-radius: 8px; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 12px; }
.tile {
  display: grid;
  justify-items: start;
  gap: 10px;
  min-height: 116px;
  padding: 16px;
  text-align: left;
  font-weight: 600;
  background: var(--surface);
  border-radius: var(--radius);
  border-top: 4px solid var(--other);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.tile:not(:disabled):hover { transform: translateY(-1px); box-shadow: 0 6px 18px rgb(0 0 0 / 0.08); }
.tile.docx { border-top-color: var(--word); }
.tile.xlsx { border-top-color: var(--excel); }
.tile.pptx { border-top-color: var(--powerpoint); }
.tile.open-file, .tile.live { border-top-color: var(--accent); gap: 4px; }
.tile.open-file .muted, .tile.live .muted { font-weight: 400; }
.tile-glyph { color: var(--accent); margin-bottom: 6px; }

.section-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.doc-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; flex: 1; justify-content: space-between; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border-radius: 999px; padding: 3px 12px; font-size: 0.85rem; background: var(--surface); }
.chip[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.chip.add { border-style: dashed; }
.view-controls { display: flex; align-items: center; gap: 8px; }
.segmented { display: flex; gap: 2px; }

.doc-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.doc-card {
  position: relative;
  display: grid;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.doc-card:hover { border-color: var(--muted); }
.doc-card.is-open { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.doc-open {
  display: grid;
  justify-items: start;
  gap: 12px;
  padding: 16px 16px 8px;
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  text-align: left;
  min-width: 0;
}
.doc-open:disabled { opacity: 1; cursor: default; }
.doc-text { display: grid; min-width: 0; width: 100%; }
.doc-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.badges { display: flex; flex-wrap: wrap; gap: 4px; padding: 0 16px 12px; min-height: 8px; }
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  color: var(--muted);
  background: var(--bg);
}
.badge-pill.open { color: var(--accent); background: var(--accent-soft); }
.doc-more { position: absolute; top: 8px; right: 8px; }

/* List view: one row per document. */
ul.doc-list { display: grid; gap: 4px; padding: 0; margin: 0; }
ul.doc-list .doc-card { grid-template-columns: 1fr auto 40px; align-items: center; }
ul.doc-list .doc-open { grid-auto-flow: column; justify-content: start; align-items: center; padding: 8px 12px; border-radius: var(--radius); }
ul.doc-list .badges { padding: 0 8px; }
ul.doc-list .doc-more { position: static; }

.empty-state { display: grid; justify-items: start; gap: 4px; padding: 24px; border: 1px dashed var(--border); border-radius: var(--radius); }
.home-footer { display: grid; gap: 4px; border-top: 1px solid var(--border); padding-top: 16px; }
.home-footer button.link { font-weight: 600; color: var(--accent); font-size: inherit; }

/* Editor download progress, above the tiles. */
.editor-status { display: grid; gap: 6px; }
.progress { height: 4px; border-radius: 2px; background: var(--border); overflow: hidden; }
.progress-bar { width: 0; height: 100%; background: var(--accent); transition: width 0.1s linear; }
.progress.indeterminate .progress-bar { width: 30%; animation: sweep 1.2s linear infinite; }
@keyframes sweep { from { transform: translateX(-100%); } to { transform: translateX(340%); } }

/* Menus (ui.ts menuButton): fixed, placed next to their button. */
.menu {
  position: fixed;
  z-index: 40;
  display: grid;
  min-width: 200px;
  padding: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgb(0 0 0 / 0.16);
}
.menu [role="menuitem"] { display: flex; justify-content: space-between; gap: 16px; border: none; border-radius: 5px; padding: 6px 10px; text-align: left; }
.menu [role="menuitem"]:hover:not(:disabled), .menu [role="menuitem"]:focus-visible { background: var(--accent-soft); outline: none; }
.menu-arrow { color: var(--muted); }

/* Editor screen: the app bar above the canvas. */
.appbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 8px;
  height: var(--appbar);
  padding: 0 8px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.appbar button { border-color: transparent; padding: 5px 10px; }
.appbar button:hover { border-color: var(--border); }
.appbar-home, .appbar-action { display: inline-flex; align-items: center; gap: 6px; }
.appbar-icon { display: grid; place-items: center; }
.appbar-title { display: flex; align-items: center; gap: 8px; min-width: 0; }
.appbar .appbar-name { font-weight: 600; max-width: 32vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.appbar-rename { width: min(320px, 40vw); padding: 4px 8px; }
.save-state { white-space: nowrap; }
.appbar-spacer { flex: 1; }

/* Settings dialog. */
.settings-section { border-top: 1px solid var(--border); padding: 14px 0 4px; }
.settings-section:first-child { border-top: none; padding-top: 0; }
.settings-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.settings-section button.link { font-weight: 400; color: var(--accent); }

/* Live session bar (live.html). */
.pill {
  position: fixed;
  top: 8px;
  right: 8px;
  z-index: 20;
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: 0 2px 10px rgb(0 0 0 / 0.12);
}
.pill button { border: none; border-radius: 999px; padding: 3px 10px; font-size: 0.8rem; }
.pill button:hover { background: var(--bg); }
.pill [role="status"] { align-self: center; padding: 0 8px; font-size: 0.8rem; }

.powered { font-weight: 600; }
.hashes { display: grid; gap: 2px; margin: 0 0 12px; font-size: 0.8rem; }
.hashes dd { margin: 0 0 6px; }

/* Recovery key and share links. */
.recovery-key {
  margin: 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  font: 12px ui-monospace, SFMono-Regular, Menlo, monospace;
  white-space: pre-wrap;
  word-break: break-all;
  user-select: all;
}

@media (max-width: 640px) {
  .home-bar { gap: 8px; padding: 0 12px; }
  .home-bar .brand { display: none; }
  .home-main { padding: 16px 12px 32px; }
  .appbar .save-state, .appbar-action span { display: none; }
  .doc { flex-wrap: wrap; }
  .doc-actions { width: 100%; justify-content: flex-end; }
}

@media (prefers-reduced-motion: reduce) {
  .progress-bar { transition: none; }
  .progress.indeterminate .progress-bar { animation: none; width: 100%; }
  .tile { transition: none; }
}