:root {
  --paper: #EDEAE1;
  --surface: #F8F6F0;
  --ink: #211E19;
  --muted: #756E60;
  --hairline: #DBD6C7;
  --hairline-strong: #C9C2AE;
  --clay: #C47A4A;
  --clay-deep: #A8623A;
  --moss: #55684B;
  --accent-soft: #FBEFE6;
  --muted-soft: #E6E2D3;
  --thumb-1: #E4DFD0;
  --thumb-2: #D8D2BF;
  --danger: #A8412D;
  --danger-soft: #E3B7A9;
  --toast-accent: #E2905F;
  --shadow: 0 1px 2px rgba(33, 30, 25, 0.06), 0 6px 16px rgba(33, 30, 25, 0.05);
  color-scheme: light;
}

/* Dark palette: applied when the user forces dark mode ([data-theme="dark"]),
   or leaves it on "system" (anything but [data-theme="light"]) and the OS
   prefers dark. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #1B1815;
    --surface: #242019;
    --ink: #EEE8DC;
    --muted: #A89E8C;
    --hairline: #3A342A;
    --hairline-strong: #4A4234;
    --clay: #E2905F;
    --clay-deep: #F0AC80;
    --moss: #8CA378;
    --accent-soft: rgba(224, 144, 95, 0.16);
    --muted-soft: #332D22;
    --thumb-1: #2C2720;
    --thumb-2: #221E18;
    --danger: #E2836C;
    --danger-soft: rgba(226, 131, 108, 0.35);
    --toast-accent: #A8623A;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 6px 20px rgba(0, 0, 0, 0.4);
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --paper: #1B1815;
  --surface: #242019;
  --ink: #EEE8DC;
  --muted: #A89E8C;
  --hairline: #3A342A;
  --hairline-strong: #4A4234;
  --clay: #E2905F;
  --clay-deep: #F0AC80;
  --moss: #8CA378;
  --accent-soft: rgba(224, 144, 95, 0.16);
  --muted-soft: #332D22;
  --thumb-1: #2C2720;
  --thumb-2: #221E18;
  --danger: #E2836C;
  --danger-soft: rgba(226, 131, 108, 0.35);
  --toast-accent: #A8623A;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 6px 20px rgba(0, 0, 0, 0.4);
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, sans-serif;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 56px 32px 80px;
}

/* --- Masthead --- */
.masthead {
  margin-bottom: 36px;
}
.masthead-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.masthead-title .mark {
  font-size: 26px;
  transform: translateY(2px);
}
.masthead h1 {
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
  font-size: 40px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.tally {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 14px;
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
}
#archivedNote { margin-left: 6px; }

/* --- Toolbar --- */
.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}

#search {
  flex: 1 1 240px;
  min-width: 180px;
  padding: 10px 14px;
  border-radius: 8px;
  border: 1px solid var(--hairline);
  background: var(--surface);
  font-size: 14px;
  color: var(--ink);
}
#search:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 1px;
}

select#sortSelect {
  padding: 9px 12px;
  border-radius: 8px;
  border: 1px solid var(--hairline);
  background: var(--surface);
  font-size: 13px;
  color: var(--ink);
  font-family: inherit;
}

.control-group { display: flex; gap: 6px; }

.toggle-btn, .ghost-btn {
  border: 1px solid var(--hairline);
  background: var(--surface);
  color: var(--muted);
  border-radius: 8px;
  padding: 9px 12px;
  font-size: 14px;
  cursor: pointer;
  line-height: 1;
}
.toggle-btn[aria-pressed="true"] {
  color: var(--clay-deep);
  border-color: var(--clay);
  background: var(--accent-soft);
}
.toggle-btn:focus-visible, .ghost-btn:focus-visible, select:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 1px;
}
.ghost-btn { white-space: nowrap; font-family: inherit; }
.ghost-btn.active {
  color: var(--clay-deep);
  border-color: var(--clay);
  background: var(--accent-soft);
}

/* --- Settings panel --- */
.settings-wrap {
  position: relative;
  display: inline-block;
}
.settings-panel {
  display: block;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  left: auto;
  z-index: 20;
  width: 220px;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 14px;
}
.settings-panel[hidden] {
  display: none;
}
.settings-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--ink);
}
.settings-row + .settings-row {
  margin-top: 10px;
}
.settings-period input[type="number"] {
  width: 64px;
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--hairline);
  background: var(--paper);
  font: inherit;
  color: var(--ink);
}
.settings-period select {
  flex: 1;
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--hairline);
  background: var(--paper);
  font: inherit;
  color: var(--ink);
}
.settings-theme {
  justify-content: space-between;
}
.settings-theme select {
  padding: 6px 8px;
  border-radius: 6px;
  border: 1px solid var(--hairline);
  background: var(--paper);
  font: inherit;
  color: var(--ink);
}
.settings-divider {
  border: none;
  border-top: 1px solid var(--hairline);
  margin: 12px 0;
}
.settings-hint {
  margin: 10px 0 0;
  font-size: 11.5px;
  color: var(--muted);
  line-height: 1.4;
}
.settings-error {
  margin: 6px 0 0;
  font-size: 11.5px;
  color: var(--danger);
  line-height: 1.4;
}

/* --- Tags filter popover --- */
.tags-wrap {
  position: relative;
  display: inline-block;
}
.tags-panel {
  display: block;
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  left: auto;
  z-index: 20;
  width: 220px;
  max-height: 260px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 14px;
}
.tags-panel[hidden] {
  display: none;
}
.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* --- Tag chips (shared by cards and the tags-filter popover) --- */
.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--clay-deep);
  border: none;
  font-family: inherit;
  cursor: pointer;
}
.tag-chip-label {
  cursor: pointer;
}
.tag-chip:hover .tag-chip-label,
.tag-chip-filter:hover {
  text-decoration: underline;
}
.tag-remove {
  background: none;
  border: none;
  color: var(--clay-deep);
  cursor: pointer;
  font-size: 12px;
  line-height: 1;
  padding: 0;
  opacity: 0.7;
}
.tag-remove:hover {
  opacity: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-top: 2px;
}
.tag-add-btn {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  background: transparent;
  border: 1px dashed var(--hairline-strong);
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
}
.tag-add-btn:hover {
  color: var(--ink);
  border-color: var(--clay);
}
.tag-input {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--hairline);
  background: var(--paper);
  color: var(--ink);
  font-family: inherit;
  width: 120px;
}

/* --- Shelf: grid view (library index cards) --- */
.shelf[data-view="grid"] {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 2px 4px rgba(33,30,25,0.08), 0 10px 22px rgba(33,30,25,0.08);
}

.card-due {
  border-color: var(--clay);
  box-shadow: 0 0 0 2px rgba(196, 122, 74, 0.25), var(--shadow);
}

.due-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--clay-deep);
  font-family: ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.card-thumb {
  height: 120px;
  background: linear-gradient(135deg, var(--thumb-1), var(--thumb-2));
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.card-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.card-thumb .favicon-fallback {
  width: 34px; height: 34px;
  border-radius: 6px;
  background: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-family: Georgia, serif;
  font-size: 16px;
  color: var(--clay-deep);
  border: 1px solid var(--hairline);
}

.card-perf {
  border-top: 1px dashed var(--hairline);
}

.card-body {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex: 1;
}
.card-title {
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.35;
  color: var(--ink);
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-title:hover { color: var(--clay-deep); }

.card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11.5px;
  color: var(--muted);
  font-family: ui-monospace, "SFMono-Regular", Menlo, monospace;
  margin-top: auto;
}

.card-actions {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}
.icon-btn {
  border: 1px solid var(--hairline);
  background: transparent;
  border-radius: 6px;
  font-size: 12px;
  padding: 5px 9px;
  color: var(--muted);
  cursor: pointer;
  font-family: inherit;
}
.icon-btn:hover { color: var(--ink); border-color: var(--hairline-strong); }
.icon-btn.danger:hover { color: var(--danger); border-color: var(--danger-soft); }

/* --- Shelf: list view (bookshelf spines) --- */
.shelf[data-view="list"] {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.shelf[data-view="list"] .card {
  flex-direction: row;
  align-items: stretch;
  height: 64px;
}
.shelf[data-view="list"] .spine {
  width: 6px;
  flex-shrink: 0;
}
.shelf[data-view="list"] .card-thumb {
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}
.shelf[data-view="list"] .card-perf {
  display: flex;
  flex: 1;
  min-width: 0;
  border-top: none;
  border-left: 1px dashed var(--hairline);
}
.shelf[data-view="list"] .card-body {
  flex-direction: row;
  align-items: center;
  gap: 14px;
  padding: 0 14px;
  flex: 1;
  min-width: 0;
}
.shelf[data-view="list"] .card-title {
  -webkit-line-clamp: 1;
  flex: 1;
  min-width: 0;
}
.shelf[data-view="list"] .card-meta {
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  margin-top: 0;
  white-space: nowrap;
}
.shelf[data-view="list"] .card-actions {
  margin-top: 0;
  margin-left: auto;
  flex-shrink: 0;
}

/* --- Spotlight: "Worth a second look" strip --- */
.spotlight {
  margin-bottom: 28px;
}
.spotlight-heading {
  font-family: Georgia, serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.spotlight-strip {
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding-bottom: 4px;
}
.spotlight-strip .card {
  flex: 0 0 200px;
  width: 200px;
}
.spotlight-strip .card-thumb {
  height: 90px;
}

.archived-badge {
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--muted-soft);
  color: var(--muted);
  font-family: ui-monospace, monospace;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* --- Empty state --- */
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--muted);
}
.empty-title {
  font-family: Georgia, serif;
  font-size: 20px;
  color: var(--ink);
  margin-bottom: 6px;
}
.empty-sub { font-size: 14px; max-width: 380px; margin: 0 auto; }

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  box-shadow: var(--shadow);
}
.toast-action {
  margin-left: 8px;
  background: none;
  border: none;
  color: var(--toast-accent);
  text-decoration: underline;
  cursor: pointer;
  font: inherit;
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
}

@media (max-width: 560px) {
  .page { padding: 32px 16px 60px; }
  .masthead h1 { font-size: 30px; }
  .spotlight-strip .card { flex-basis: 160px; width: 160px; }
}