:root {
  color-scheme: dark;
  --font-ui: "Spline Sans", "Zen Kaku Gothic New", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Newsreader", "Zen Kaku Gothic New", Georgia, "Times New Roman", serif;
  --bs-body-font-family: var(--font-ui);
  --bs-font-sans-serif: var(--font-ui);
  --color-canvas: #0f0f11;
  --color-surface: #16161a;
  --color-raised: #1d1d22;
  --color-overlay: #252529;
  --color-edge: #773030;
  --color-edge-subtle: #1b1b20;
  --color-ink: #e1e1e8;
  --color-ink-2: #c5c5d1;
  --color-ink-3: #a89898;
  --color-accent: #ff1100;
  --color-accent-glow: rgba(139, 140, 245, .08);
  --color-accent-subtle: rgba(139, 140, 245, .18);
  --color-green: #3ecb74;
  --color-amber: #f0a232;

  /* Aliases retained for the existing non-Library Razor pages. */
  --ink: var(--color-ink);
  --muted: var(--color-ink-2);
  --surface: var(--color-surface);
  --surface-soft: var(--color-raised);
  --canvas: var(--color-canvas);
  --line: var(--color-edge);
  --accent: var(--color-accent);
  --accent-dark: #b90404;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  min-height: 100%;
  font-size: 15px;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--color-canvas);
  color: var(--color-ink);
  font-family: var(--font-ui);
  -webkit-font-smoothing: antialiased;
}

h1 {
  font-family: var(--font-display);
  font-weight: 500;
}

a {
  color: var(--color-accent);
}

button,
input,
select,
textarea {
  font: inherit;
  font-family: var(--font-ui);
}

table,
.stat-card,
.metadata-list {
  font-family: var(--font-ui);
}

::selection {
  background: var(--color-accent-subtle);
  color: var(--color-ink);
}

.app-shell {
  min-height: 100vh;
  background: var(--color-canvas);
}

.app-sidebar {
  width: 216px !important;
  color: var(--color-ink);
  background: var(--color-surface);
  border-right: 1px solid var(--color-edge) !important;
}

.app-sidebar-body,
.app-sidebar .offcanvas-body {
  height: 100%;
  padding: 0;
}

.app-sidebar .offcanvas-header {
  min-height: 54px;
  border-bottom: 1px solid var(--color-edge);
}

.sidebar-content {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  width: 100%;
  padding: 0 8px 12px;
}

.app-brand,
.mobile-brand {
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -.01em;
  text-decoration: none;
}

.app-brand:hover,
.mobile-brand:hover {
  color: var(--color-ink);
}

.app-brand {
  align-items: center;
  gap: 10px;
  margin: 0 8px;
  padding: 20px 0;
}

.brand-mark {
  display: inline-grid;
  width: 24px;
  height: 24px;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 4px;
  background: var(--color-accent);
}

.brand-mark svg {
  width: 14px;
  height: 14px;
  fill: #fff;
}

.app-nav {
  display: grid;
  gap: 2px;
}

.app-nav-bottom {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--color-edge);
}

.app-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 7px 10px;
  border-radius: 6px;
  color: var(--color-ink-2);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
  text-decoration: none;
  transition: color .12s ease, background-color .12s ease;
}

.app-nav-link:hover {
  color: var(--color-ink);
  background: var(--color-raised);
}

.app-nav-link.active {
  color: var(--color-accent);
  background: var(--color-accent-glow);
}

.nav-symbol {
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  fill: currentColor;
}

.nav-symbol-stroke {
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.4;
}

.app-content {
  min-width: 0;
  min-height: 100vh;
}

.app-main {
  width: min(1180px, 100%);
  min-height: 100vh;
  margin: 0 auto;
  padding: 34px;
}

.app-main--flush {
  width: 100%;
  max-width: none;
  padding: 0;
}

.mobile-header {
  align-items: center;
  gap: 12px;
  min-height: 54px;
  padding: 0 14px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-edge);
}

.menu-button {
  display: grid;
  gap: 4px;
  padding: 6px;
  border: 0;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 1px;
  background: var(--color-ink);
}

/* Library vertical slice */

.library-page {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  background: var(--color-canvas);
}

.library-header {
  display: flex;
  min-height: 60px;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--color-edge);
}

.library-heading {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.library-heading h1 {
  margin: 0;
  color: var(--color-ink);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.01em;
}

.library-heading span {
  color: var(--color-ink-3);
  font-size: 11px;
}

.library-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.library-search {
  position: relative;
  display: flex;
  width: 190px;
  height: 32px;
  align-items: center;
}

.library-search svg {
  position: absolute;
  left: 10px;
  width: 14px;
  height: 14px;
  fill: none;
  stroke: var(--color-ink-3);
  stroke-linecap: round;
  stroke-width: 1.4;
  pointer-events: none;
}

.library-search input {
  width: 100%;
  height: 100%;
  padding: 0 10px 0 31px;
  border: 1px solid var(--color-edge);
  border-radius: 6px;
  outline: none;
  background: var(--color-raised);
  color: var(--color-ink);
  font-size: 13px;
}

.library-search input::placeholder {
  color: var(--color-ink-3);
}

.library-search input:focus,
.status-filter select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-glow);
}

.primary-action,
.secondary-action {
  display: inline-flex;
  min-height: 32px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 11px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
}

.primary-action {
  background: var(--color-accent);
  color: #fff;
}

.primary-action:hover {
  background: #7d7ee8;
  color: #fff;
}

.primary-action span {
  font-size: 17px;
  font-weight: 400;
  line-height: 1;
}

.secondary-action {
  border: 1px solid var(--color-edge);
  background: var(--color-raised);
  color: var(--color-ink-2);
}

.secondary-action:hover {
  border-color: var(--color-ink-3);
  color: var(--color-ink);
}

.library-filters {
  display: flex;
  min-height: 50px;
  align-items: center;
  gap: 16px;
  padding: 9px 20px;
  border-bottom: 1px solid var(--color-edge);
}

.filter-tabs {
  display: flex;
  align-items: center;
  gap: 2px;
}

.filter-tab {
  padding: 6px 10px;
  border: none;
  border-radius: 6px;
  color: var(--color-ink-2);
  font-size: 12px;
  line-height: 1.4;
  text-decoration: none;
  transition: color .12s ease, background-color .12s ease;
}

.filter-tab:hover {
  color: var(--color-ink);
  background: var(--color-raised);
}

.filter-tab.active {
  color: var(--color-accent);
  background: var(--color-accent-subtle);
}

.status-filter {
  margin-left: auto;
}

.status-filter select {
  height: 30px;
  padding: 0 30px 0 9px;
  border: 1px solid var(--color-edge);
  border-radius: 6px;
  outline: none;
  background-color: var(--color-raised);
  color: var(--color-ink-2);
  font-size: 12px;
  cursor: pointer;
}

.library-results {
  flex: 1;
  min-height: 0;
}

.media-list {
  display: block;
}

.media-row {
  border-bottom: 1px solid var(--color-edge-subtle);
}

.media-row-link {
  display: grid;
  grid-template-columns: 40px minmax(220px, 1fr) 176px 92px;
  align-items: center;
  gap: 12px;
  min-height: 80px;
  padding: 12px 20px;
  color: inherit;
  text-decoration: none;
  transition: background-color .12s ease;
}

.media-row-link:hover {
  color: inherit;
  background: var(--color-surface);
}

.media-row-link:focus-visible {
  outline: 1px solid var(--color-accent);
  outline-offset: -1px;
  background: var(--color-accent-glow);
}

.media-cover {
  position: relative;
  display: grid;
  width: 40px;
  height: 56px;
  place-items: end center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .07);
  border-radius: 3px;
  color: rgba(255, 255, 255, .56);
  box-shadow: inset 3px 0 0 rgba(0, 0, 0, .18);
}

.media-cover::before {
  position: absolute;
  inset: 7px 7px auto;
  height: 1px;
  background: currentColor;
  box-shadow: 0 4px 0 currentColor, 0 8px 0 currentColor;
  content: "";
  opacity: .28;
}

.media-cover.has-image::before {
  display: none;
}

.media-cover-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-cover span {
  position: relative;
  z-index: 1;
  padding-bottom: 5px;
  font-family: var(--font-ui);
  font-size: 8px;
  letter-spacing: .08em;
}

.media-copy {
  display: block;
  min-width: 0;
}

.media-title,
.media-series {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.media-title {
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

.media-series {
  margin-top: 2px;
  color: var(--color-ink-2);
  font-size: 12px;
  line-height: 1.35;
}

.media-tags {
  display: flex;
  min-height: 18px;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px 8px;
  margin-top: 6px;
}

.media-type-tag {
  display: inline-flex;
  align-items: center;
  min-height: 18px;
  padding: 1px 6px;
  border: 1px solid var(--color-edge);
  border-radius: 4px;
  background: var(--color-raised);
  color: var(--color-ink-2);
  font-size: 10px;
  line-height: 1;
}

.source-tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--color-ink-2);
  font-size: 11px;
  line-height: 1;
}

.source-tag i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-accent);
}

.media-row-progress {
  min-width: 0;
}

.work-progress {
  width: 100%;
}

.progress-copy {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 6px;
  color: var(--color-ink-2);
  font-family: var(--font-ui);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.progress-track {
  width: 100%;
  height: 3px;
  overflow: hidden;
  border-radius: 2px;
  background: var(--color-overlay);
}

.progress-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--color-accent);
}

.progress-fill.complete {
  background: var(--color-green);
}

.media-status {
  display: inline-flex;
  align-items: center;
  justify-self: end;
  gap: 6px;
  color: var(--color-ink-2);
  font-size: 11px;
  white-space: nowrap;
}

.media-status i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-ink-3);
}

.media-status-active {
  color: var(--color-ink);
}

.media-status-active i {
  background: var(--color-accent);
}

.media-status-completed i {
  background: var(--color-green);
}

.library-empty {
  display: grid;
  min-height: 210px;
  place-content: center;
  justify-items: center;
  padding: 32px 20px;
  text-align: center;
}

.library-empty h2 {
  margin: 0;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
}

.library-empty p {
  margin: 7px 0 14px;
  color: var(--color-ink-3);
  font-size: 12px;
}

.library-notice {
  padding: 10px 20px;
  border-bottom: 1px solid rgba(62, 203, 116, .24);
  background: rgba(62, 203, 116, .08);
  color: #86dca8;
  font-size: 12px;
}

/* Existing page primitives, kept neutral while their pages remain out of scope. */

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.page-header.compact {
  margin-bottom: 18px;
}

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

.page-notice {
  margin-bottom: 18px;
  padding: 10px 12px;
  border: 1px solid rgba(62, 203, 116, .24);
  border-radius: 6px;
  background: rgba(62, 203, 116, .08);
  color: #86dca8;
  font-size: 12px;
}

.page-header h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4vw, 2.25rem);
  font-weight: 500;
  letter-spacing: -.035em;
}

.page-description {
  max-width: 660px;
  margin: 7px 0 0;
  color: var(--color-ink-2);
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--color-accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.content-card,
.stat-card,
.choice-card {
  border: 1px solid var(--color-edge);
  border-radius: 3px;
  background: var(--color-surface);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 18px;
}

.stat-card {
  display: grid;
  gap: 4px;
  padding: 18px;
}

.stat-card strong {
  font-size: 1.8rem;
  letter-spacing: -.04em;
}

.stat-card small,
.stat-label,
.choice-card p,
.metadata-list dt {
  color: var(--color-ink-2);
}

.stat-label {
  font-weight: 600;
}

.empty-state {
  display: flex;
  min-height: 280px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  padding: 40px 24px;
  text-align: center;
}

.empty-state h2 {
  margin: 12px 0 6px;
  font-size: 1.2rem;
}

.empty-state p {
  max-width: 560px;
  margin: 0 0 18px;
  color: var(--color-ink-2);
}

.empty-icon,
.choice-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  color: var(--color-accent);
}

.choice-icon {
  overflow: hidden;
}

.choice-icon img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.empty-actions,
.form-actions,
.search-form {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-primary {
  --bs-btn-bg: var(--color-accent);
  --bs-btn-border-color: var(--color-accent);
  --bs-btn-hover-bg: #db1e05;
  --bs-btn-hover-border-color: #000000;
  border-radius: 6px;
  font-weight: 500;
}

.btn-outline-secondary {
  --bs-btn-color: var(--color-ink-2);
  --bs-btn-border-color: var(--color-edge);
  --bs-btn-hover-color: var(--color-ink);
  --bs-btn-hover-bg: var(--color-raised);
  --bs-btn-hover-border-color: var(--color-ink-3);
  border-radius: 6px;
}

.form-control,
.form-select {
  border-color: var(--color-edge);
  background-color: var(--color-raised);
  color: var(--color-ink);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-accent);
  background-color: var(--color-raised);
  color: var(--color-ink);
  box-shadow: 0 0 0 2px var(--color-accent-glow);
}

.breadcrumb-nav {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
  color: var(--color-ink-2);
  font-size: 12px;
}

.breadcrumb-nav a {
  color: var(--color-ink-2);
  text-decoration: none;
}

.media-badge {
  display: inline-flex;
  width: fit-content;
  padding: 3px 6px;
  border: 1px solid var(--color-edge);
  border-radius: 4px;
  background: var(--color-raised);
  color: var(--color-ink-2);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, .8fr);
  gap: 14px;
  margin-bottom: 14px;
}

.detail-primary,
.detail-aside,
.section-block,
.form-card {
  padding: 22px;
}

.detail-primary h2,
.section-heading h2 {
  margin: 0 0 20px;
  font-size: 1.2rem;
}

.detail-overview {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr);
  align-items: start;
  gap: 22px;
}

.detail-cover,
.jiten-cover {
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--color-edge);
  border-radius: 4px;
  background: var(--color-raised);
  color: var(--color-ink-3);
}

.detail-cover {
  width: 132px;
  aspect-ratio: 2 / 3;
}

.detail-cover img,
.jiten-cover img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.detail-cover span,
.jiten-cover span {
  padding: 10px;
  font-size: 11px;
  text-align: center;
}

.detail-progress {
  margin-bottom: 22px;
}

.detail-stat-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.detail-stat-grid > div {
  display: grid;
  gap: 3px;
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--color-edge-subtle);
  border-radius: 4px;
  background: var(--color-raised);
}

.detail-stat-grid dd {
  margin: 0;
  overflow: hidden;
  color: var(--color-ink);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.detail-stat-grid dt {
  color: var(--color-ink-3);
  font-size: 10px;
  font-weight: 500;
}

.metadata-list {
  margin: 0;
}

.metadata-list div {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-edge);
}

.metadata-list div:last-child {
  border-bottom: 0;
}

.metadata-list dt {
  font-weight: 500;
}

.metadata-list dd {
  margin: 0;
  font-weight: 600;
  overflow-wrap: anywhere;
  text-align: right;
}

.section-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.section-summary,
.jiten-results-heading > span {
  color: var(--color-ink-3);
  font-size: 11px;
}

.immersion-log-table-wrap {
  overflow-x: auto;
}

.immersion-log-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--color-ink-2);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}

.immersion-log-table th,
.immersion-log-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-edge-subtle);
  text-align: left;
  white-space: nowrap;
}

.immersion-log-table th {
  color: var(--color-ink-3);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.immersion-log-table tbody tr:last-child td {
  border-bottom: 0;
}

.inline-empty {
  padding: 25px;
  border: 1px dashed var(--color-edge);
  border-radius: 6px;
  background: var(--color-raised);
  color: var(--color-ink-2);
  text-align: center;
}

.form-card {
  max-width: 760px;
}

.form-stack {
  display: grid;
  gap: 18px;
}

.form-label {
  font-weight: 600;
}

.form-actions {
  align-items: center;
  margin-top: 22px;
}

.scaffold-notice {
  margin-bottom: 20px;
  padding: 10px 12px;
  border: 1px solid rgba(240, 162, 50, .2);
  border-radius: 6px;
  background: rgba(240, 162, 50, .08);
  color: #d4a65f;
  font-size: 12px;
}

.choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.choice-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 22px;
  color: var(--color-ink);
  text-decoration: none;
}

.choice-card:hover {
  border-color: var(--color-ink-3);
  color: var(--color-ink);
  background: var(--color-raised);
}

.choice-card h2 {
  margin: 0 0 5px;
  font-size: 1.1rem;
}

.choice-card p {
  margin: 0;
}

.choice-arrow {
  color: var(--color-accent);
  font-size: 1.25rem;
}

.compact-empty {
  min-height: 220px;
  margin-top: 16px;
}

/* Jiten linking */

.jiten-search-card {
  max-width: 820px;
  padding: 20px;
}

.jiten-search-form {
  flex-wrap: nowrap;
}

.jiten-search-form .form-control {
  min-width: 0;
}

.jiten-results {
  margin-top: 28px;
}

.jiten-results-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
}

.jiten-results-heading h2 {
  margin: 0;
  font-size: 1.2rem;
}

.jiten-result-list {
  display: grid;
  gap: 10px;
}

.jiten-result-card {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) auto;
  align-items: center;
  gap: 16px;
  padding: 16px;
}

.jiten-cover {
  width: 72px;
  aspect-ratio: 2 / 3;
}

.jiten-result-copy {
  min-width: 0;
}

.jiten-result-copy h3 {
  margin: 0 0 5px;
  overflow: hidden;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.jiten-result-copy p {
  margin: 0;
  color: var(--color-ink-2);
  font-size: 11px;
}

.jiten-result-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 5px 12px;
  margin-top: 8px;
  color: var(--color-ink-3);
  font-size: 10px;
}

.jiten-result-actions {
  display: grid;
  justify-items: stretch;
  gap: 8px;
  min-width: 178px;
}

.jiten-result-actions form {
  display: grid;
  gap: 8px;
}

.jiten-result-actions .form-select,
.jiten-result-actions .btn {
  font-size: 11px;
}

/* TTSU import */

.import-validation:empty {
  display: none;
}

.import-validation,
.import-warnings {
  margin-bottom: 16px;
  padding: 12px 14px;
  border-radius: 6px;
  font-size: 12px;
}

.import-validation {
  border: 1px solid rgba(255, 74, 74, .25);
  background: rgba(255, 74, 74, .08);
  color: #ff9a9a;
}

.import-validation ul,
.import-warnings ul {
  margin: 6px 0 0;
  padding-left: 18px;
}

.import-warnings {
  border: 1px solid rgba(240, 162, 50, .22);
  background: rgba(240, 162, 50, .08);
  color: #dfb978;
}

.ttsu-upload-card {
  max-width: 820px;
  padding: 20px;
}

.ttsu-upload-form {
  display: grid;
  gap: 14px;
}

.ttsu-folder-picker {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border: 1px dashed var(--color-edge);
  border-radius: 6px;
  background: var(--color-raised);
}

.ttsu-upload-icon {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: var(--color-accent);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.ttsu-picker-copy {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.ttsu-picker-copy strong {
  color: var(--color-ink);
  font-size: 13px;
  font-weight: 600;
}

.ttsu-picker-copy span,
.ttsu-upload-actions .form-text {
  color: var(--color-ink-2);
  font-size: 11px;
}

.ttsu-upload-actions {
  margin-top: 0;
}

.ttsu-preview {
  margin-top: 28px;
}

.ttsu-preview-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 12px;
}

.ttsu-preview-heading h2 {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 600;
}

.ttsu-preview-heading > span {
  color: var(--color-ink-3);
  font-size: 11px;
}

.ttsu-book-list {
  display: grid;
  gap: 8px;
}

.ttsu-book-preview {
  display: grid;
  grid-template-columns: auto minmax(190px, 1fr) minmax(360px, 1.5fr) minmax(180px, .7fr);
  align-items: center;
  gap: 16px;
  padding: 16px;
}

.ttsu-book-select {
  align-self: start;
  padding-top: 3px;
}

.ttsu-book-copy {
  min-width: 0;
}

.ttsu-book-copy h3 {
  margin: 0 0 6px;
  overflow: hidden;
  color: var(--color-ink);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.35;
  text-overflow: ellipsis;
}

.import-match {
  display: inline-flex;
  padding: 2px 6px;
  border: 1px solid var(--color-edge);
  border-radius: 4px;
  color: var(--color-ink-2);
  font-size: 10px;
}

.import-match-existing {
  border-color: rgba(240, 162, 50, .28);
  color: #dfb978;
}

.ttsu-book-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0;
}

.ttsu-book-stats div {
  min-width: 0;
}

.ttsu-book-stats dt,
.ttsu-import-mode label {
  margin-bottom: 3px;
  color: var(--color-ink-3);
  font-size: 10px;
  font-weight: 500;
}

.ttsu-book-stats dd {
  margin: 0;
  overflow: hidden;
  color: var(--color-ink-2);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.ttsu-import-mode {
  min-width: 0;
}

.ttsu-import-mode label {
  display: block;
}

.ttsu-import-mode .form-select {
  min-height: 32px;
  padding-top: 4px;
  padding-bottom: 4px;
  font-size: 11px;
}

.ttsu-entry-details {
  grid-column: 2 / -1;
  padding-top: 10px;
  border-top: 1px solid var(--color-edge-subtle);
}

.ttsu-entry-details summary {
  width: fit-content;
  color: var(--color-ink-2);
  font-size: 11px;
  cursor: pointer;
}

.ttsu-entry-table-wrap {
  max-height: 280px;
  margin-top: 10px;
  overflow: auto;
}

.ttsu-entry-table {
  width: 100%;
  border-collapse: collapse;
  color: var(--color-ink-2);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}

.ttsu-entry-table th,
.ttsu-entry-table td {
  padding: 7px 9px;
  border-bottom: 1px solid var(--color-edge-subtle);
  text-align: left;
}

.ttsu-entry-table th {
  position: sticky;
  top: 0;
  background: var(--color-surface);
  color: var(--color-ink-3);
  font-weight: 500;
}

.ttsu-confirm-actions {
  margin-top: 16px;
}

@media (min-width: 992px) {
  .app-shell {
    display: grid;
    grid-template-columns: 216px minmax(0, 1fr);
  }

  .app-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
  }
}

@media (max-width: 991.98px) {
  .app-main {
    min-height: calc(100vh - 54px);
    padding: 26px 20px 44px;
  }

  .app-main--flush {
    padding: 0;
  }

  .library-page {
    min-height: calc(100vh - 54px);
  }
}

@media (max-width: 760px) {
  .library-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .library-header-actions {
    width: 100%;
    margin-left: 0;
  }

  .library-search {
    width: auto;
    flex: 1;
  }

  .library-filters {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .filter-tabs {
    width: 100%;
    overflow-x: auto;
  }

  .status-filter {
    margin-left: 0;
  }

  .media-row-link {
    grid-template-columns: 36px minmax(0, 1fr);
    gap: 8px 12px;
    padding: 11px 14px;
  }

  .media-cover {
    width: 36px;
    height: 50px;
  }

  .media-row-progress,
  .media-status {
    grid-column: 2;
  }

  .media-status {
    justify-self: start;
  }

  .stat-grid,
  .choice-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .detail-overview {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 15px;
  }

  .detail-cover {
    width: 92px;
  }

  .detail-stat-grid {
    grid-template-columns: 1fr;
  }

  .jiten-result-card {
    grid-template-columns: 58px minmax(0, 1fr);
    align-items: start;
    gap: 12px;
  }

  .jiten-cover {
    width: 58px;
  }

  .jiten-result-actions {
    grid-column: 2;
    min-width: 0;
  }

  .jiten-results-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .ttsu-folder-picker,
  .ttsu-book-preview {
    grid-template-columns: auto minmax(0, 1fr);
  }

  .ttsu-folder-picker .btn,
  .ttsu-book-stats,
  .ttsu-import-mode,
  .ttsu-entry-details {
    grid-column: 2;
  }

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

  .ttsu-preview-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .page-header {
    align-items: stretch;
    flex-direction: column;
  }

  .page-actions {
    align-self: flex-start;
  }


  .search-form {
    flex-direction: column;
  }
}

/* --- Heatmap Component --- */
.heatmap-card {
  margin-bottom: 24px;
  padding: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-edge-subtle);
  border-radius: 10px;
}

.heatmap-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 18px;
}

.heatmap-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.heatmap-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: var(--color-ink);
}

.heatmap-subtitle {
  font-size: 0.85rem;
  color: var(--color-ink-2);
  margin: 0;
}

.heatmap-toolbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.heatmap-control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.heatmap-label {
  font-size: 0.8rem;
  color: var(--color-ink-2);
  white-space: nowrap;
}

.heatmap-select {
  background-color: var(--color-raised);
  color: var(--color-ink);
  border-color: var(--color-edge);
  font-size: 0.85rem;
  padding: 4px 28px 4px 10px;
  width: auto;
}

.heatmap-select:focus {
  background-color: var(--color-raised);
  color: var(--color-ink);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 0.2rem var(--color-accent-subtle);
}

.heatmap-mode-group .btn-outline-secondary {
  color: var(--color-ink-2);
  border-color: var(--color-edge);
  background-color: var(--color-raised);
  font-size: 0.8rem;
  padding: 3px 10px;
}

.heatmap-mode-group .btn-check:checked + .btn-outline-secondary {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #ffffff;
}

.heatmap-body {
  position: relative;
  margin: 12px 0;
}

.heatmap-scroll-container {
  overflow-x: auto;
  padding-bottom: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--color-edge) transparent;
}

.heatmap-scroll-container::-webkit-scrollbar {
  height: 6px;
}

.heatmap-scroll-container::-webkit-scrollbar-thumb {
  background: var(--color-edge);
  border-radius: 3px;
}

.heatmap-scroll-container::-webkit-scrollbar-track {
  background: transparent;
}

.heatmap-svg-wrapper {
  display: inline-block;
  min-width: 100%;
}

.heatmap-multi-year {
  display: inline-flex;
  gap: 28px;
  align-items: flex-start;
}

.heatmap-year-block {
  flex-shrink: 0;
}

.heatmap-year-svg {
  display: block;
}

.heatmap-year-title {
  fill: var(--color-ink);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-ui);
}

.heatmap-month-text {
  fill: var(--color-ink-2);
  font-size: 11px;
  font-family: var(--font-ui);
}

.heatmap-weekday-text {
  fill: var(--color-ink-3);
  font-size: 9px;
  font-family: var(--font-ui);
}

.heatmap-cell {
  cursor: pointer;
  transition: stroke 0.12s ease, filter 0.12s ease;
}

.heatmap-cell[data-level="0"] {
  fill: var(--color-raised);
}

.heatmap-cell[data-level="1"] {
  fill: rgba(255, 17, 0, 0.22);
}

.heatmap-cell[data-level="2"] {
  fill: rgba(255, 17, 0, 0.48);
}

.heatmap-cell[data-level="3"] {
  fill: rgba(255, 17, 0, 0.75);
}

.heatmap-cell[data-level="4"] {
  fill: #ff1100;
}

.heatmap-cell:hover {
  stroke: var(--color-ink-2);
  stroke-width: 1.5px;
}

.heatmap-cell.is-range-selected {
  stroke: #ffffff !important;
  stroke-width: 2px !important;
  filter: drop-shadow(0 0 4px rgba(255, 17, 0, 0.85));
}

.heatmap-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-edge-subtle);
  font-size: 0.8rem;
}

.heatmap-selected-info {
  color: var(--color-ink);
  font-size: 0.85rem;
}

.heatmap-selected-info .stat-highlight {
  color: var(--color-accent);
  font-weight: 600;
}

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 4px;
}

.heatmap-legend .legend-label {
  font-size: 0.75rem;
  color: var(--color-ink-3);
  margin: 0 4px;
}

.heatmap-legend .legend-box {
  display: inline-block;
  width: 11px;
  height: 11px;
  border-radius: 2px;
}

.legend-box.level-0 {
  background-color: var(--color-raised);
}

.legend-box.level-1 {
  background-color: rgba(255, 17, 0, 0.22);
}

.legend-box.level-2 {
  background-color: rgba(255, 17, 0, 0.48);
}

.legend-box.level-3 {
  background-color: rgba(255, 17, 0, 0.75);
}

.legend-box.level-4 {
  background-color: #ff1100;
}

.heatmap-tooltip {
  position: fixed;
  z-index: 9999;
  display: none;
  background: var(--color-overlay);
  color: var(--color-ink);
  border: 1px solid var(--color-edge);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.75rem;
  line-height: 1.4;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.6);
  pointer-events: none;
  white-space: nowrap;
}

.heatmap-tooltip.is-visible {
  display: block;
}

/* --- Authentication & Login --- */
.auth-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  background-image: radial-gradient(circle at 50% 20%, rgba(255, 17, 0, 0.06) 0%, transparent 60%);
  padding: 24px 16px;
  font-family: var(--font-ui);
}

.auth-wrapper {
  width: 100%;
  max-width: 400px;
  margin: 0 auto;
}

.auth-card {
  background: var(--color-surface);
  border: 1px solid var(--color-edge);
  border-radius: 14px;
  padding: 36px 32px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.5), 0 1px 3px rgba(0, 0, 0, 0.4);
}

.auth-brand-header {
  text-align: center;
  margin-bottom: 28px;
}

.auth-brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--color-raised);
  border: 1px solid var(--color-edge);
  margin-bottom: 14px;
}

.auth-title {
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 600;
  color: var(--color-ink);
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.auth-subtitle {
  font-size: 0.85rem;
  color: var(--color-ink-2);
  margin: 0;
}

.auth-error-alert {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 8px;
  background: rgba(255, 17, 0, 0.12);
  border: 1px solid rgba(255, 17, 0, 0.3);
  color: #ff6b6b;
  font-size: 0.85rem;
  margin-bottom: 20px;
  line-height: 1.4;
}

.auth-error-icon {
  flex-shrink: 0;
  color: #ff4d4d;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.auth-label {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-ink-2);
}

.auth-input-wrap {
  position: relative;
}

.auth-input {
  width: 100%;
  padding: 10px 14px;
  background-color: var(--color-raised);
  border: 1px solid var(--color-edge);
  border-radius: 8px;
  color: var(--color-ink);
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.auth-input:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
  background-color: var(--color-raised);
}

.auth-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.auth-checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--color-ink-2);
  cursor: pointer;
  user-select: none;
}

.auth-checkbox {
  appearance: none;
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--color-edge);
  border-radius: 4px;
  background: var(--color-raised);
  outline: none;
  cursor: pointer;
  position: relative;
  transition: all 0.15s ease;
}

.auth-checkbox:checked {
  background: var(--color-accent);
  border-color: var(--color-accent);
}

.auth-checkbox:checked::after {
  content: '';
  position: absolute;
  left: 5px;
  top: 2px;
  width: 4px;
  height: 8px;
  border: solid #ffffff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.auth-submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 11px 16px;
  border: none;
  border-radius: 8px;
  background: var(--color-accent);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.auth-submit-btn:hover {
  opacity: 0.92;
}

.auth-submit-btn:active {
  transform: scale(0.99);
}

/* Sidebar Logout Button */
.sidebar-logout-form {
  margin: 0;
  padding: 0;
}

.sidebar-logout-btn {
  width: 100%;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  color: var(--color-ink-3);
  transition: color 0.15s ease, background-color 0.15s ease;
}

.sidebar-logout-btn:hover {
  color: #ff6b6b;
  background: rgba(255, 17, 0, 0.08);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}