:root {
  color-scheme: dark;
  --canvas: #050817;
  --canvas-raised: #09112a;
  --surface: #101b3a;
  --surface-strong: #172650;
  --surface-soft: #0b1430;
  --text: #f7f8ff;
  --muted: #a8b3d5;
  --primary: #47d7ff;
  --primary-strong: #2563eb;
  --primary-soft: rgb(71 215 255 / 12%);
  --accent: #8b5cf6;
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #fb7185;
  --border: rgb(148 163 184 / 20%);
  --border-strong: rgb(148 163 184 / 32%);
  --shadow-sm: 0 10px 28px rgb(0 0 0 / 18%);
  --shadow-lg: 0 24px 60px rgb(0 0 0 / 30%);
  --radius-sm: 12px;
  --radius: 18px;
  --radius-lg: 24px;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  min-block-size: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 88% -8%, rgb(71 215 255 / 14%), transparent 34rem),
    radial-gradient(circle at 8% 35%, rgb(139 92 246 / 12%), transparent 30rem),
    linear-gradient(180deg, var(--canvas) 0%, #030511 100%);
  line-height: 1.6;
}
a { color: var(--primary); }
h1, h2, h3, p, dl { margin-block-start: 0; }
h1 { font-size: clamp(2rem, 4vw, 3.35rem); line-height: 1.15; letter-spacing: -.035em; }
h2 { font-size: clamp(1.45rem, 2.5vw, 2rem); line-height: 1.25; }
button, input, select, textarea { font: inherit; }

.skip-link {
  position: absolute;
  inset-block-start: -5rem;
  inset-inline-start: 1rem;
  z-index: 100;
}
.skip-link:focus {
  inset-block-start: 1rem;
  padding: .75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 20;
  border-block-end: 1px solid var(--border);
  background: rgb(5 8 23 / 88%);
  backdrop-filter: blur(18px);
}
.topbar-inner {
  display: flex;
  min-block-size: 4.5rem;
  max-inline-size: 78rem;
  margin-inline: auto;
  padding-inline: 1.5rem;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: .72rem;
  color: var(--text);
  font-weight: 900;
  letter-spacing: -.025em;
  text-decoration: none;
}
.brand-mark {
  display: block;
  inline-size: 2.75rem;
  block-size: 2.75rem;
  object-fit: contain;
  filter: drop-shadow(0 9px 18px rgb(71 215 255 / 18%));
}
.brand-name { font-size: 1.08rem; unicode-bidi: isolate; }
.nav-actions, .primary-nav, .action-row {
  display: flex;
  align-items: center;
  gap: .5rem;
}
.nav-actions { min-inline-size: 0; }
.nav-actions form, .action-row form, .chapter-actions form { margin: 0; }
.nav-link {
  padding: .55rem .72rem;
  border-radius: .65rem;
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}
.nav-link:hover { color: var(--text); background: var(--primary-soft); }
.nav-link.is-active { color: var(--text); background: var(--primary-soft); }
.logout-icon { display: none; }

main {
  max-inline-size: 78rem;
  margin-inline: auto;
  padding: 2.5rem 1.5rem 5rem;
}
.surface-panel, .card, .auth-card, .add-series, .chapter-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgb(20 38 54 / 94%), rgb(11 24 35 / 96%));
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}
.card, .auth-card { padding: 1.5rem; }
.auth-card { max-inline-size: 30rem; margin-inline: auto; }
.eyebrow {
  margin-block-end: .35rem;
  color: var(--primary);
  font-size: .88rem;
  font-weight: 900;
  letter-spacing: .035em;
}
.hero-copy {
  max-inline-size: 62ch;
  margin-block-end: 0;
  color: var(--muted);
  font-size: 1.02rem;
}

.library-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(18rem, .65fr);
  gap: 2rem;
  padding: 2rem;
  align-items: center;
}
.library-hero h1 { max-inline-size: 16ch; margin-block-end: .9rem; }
.stats-strip, .detail-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .7rem;
}
.stats-strip div, .detail-stats div, .mini-stats div {
  min-inline-size: 0;
  padding: .85rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgb(6 15 23 / 55%);
}
dt { color: var(--muted); font-size: .8rem; }
dd { margin: 0; font-size: 1.35rem; font-weight: 900; }

.add-series { margin-block: 1.25rem 2.25rem; overflow: hidden; }
.add-series summary {
  display: flex;
  min-block-size: 4.5rem;
  padding: 1rem 1.25rem;
  cursor: pointer;
  list-style: none;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.add-series summary::-webkit-details-marker { display: none; }
.add-series summary span:first-child { display: grid; }
.add-series summary small, .field small, .section-heading > p:last-child { color: var(--muted); }
.summary-action { color: var(--primary); font-weight: 800; white-space: nowrap; }
.add-series[open] summary { border-block-end: 1px solid var(--border); }
.inline-form {
  display: flex;
  padding: .65rem 1.25rem 1.25rem;
  align-items: end;
  gap: 1rem;
}
.add-form-grid {
  display: grid;
  grid-template-columns: minmax(18rem, 1fr) minmax(10rem, .34fr) minmax(10rem, .34fr) auto;
  padding: .65rem 1.25rem 1.25rem;
  align-items: end;
  gap: .85rem;
}
.add-form-grid .button { margin-block-end: .75rem; }
.grow { flex: 1; }
.field { margin-block: .75rem; }
.resize-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  margin-block: 1rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.resize-options legend { padding-inline: .4rem; font-weight: 700; }
.resize-options .field { margin: 0; }
.download-settings-shell {
  margin-block: 1rem;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgb(14 29 42 / 92%), rgb(7 17 26 / 94%));
  box-shadow: var(--shadow-sm);
}
.download-settings-summary {
  position: relative;
  display: grid;
  min-block-size: 5.5rem;
  padding: 1rem 3.5rem 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  transition: background .3s ease-out;
}
.download-settings-summary::-webkit-details-marker { display: none; }
.download-settings-summary::before {
  position: absolute;
  inset-inline-start: 1.1rem;
  display: grid;
  inline-size: 2rem;
  block-size: 2rem;
  border: 1px solid var(--border-strong);
  border-radius: 9px;
  place-items: center;
  color: var(--primary);
  background: rgb(56 189 248 / 8%);
  content: "+";
  font-size: 1.25rem;
  font-weight: 500;
  transition: transform .3s ease-out, background .3s ease-out;
}
.download-settings-shell[open] > .download-settings-summary::before { transform: rotate(45deg); background: rgb(56 189 248 / 14%); }
.download-settings-summary:hover { background: rgb(56 189 248 / 4%); }
.download-settings-summary > span:first-child { display: grid; }
.download-settings-summary .eyebrow { margin: 0; }
.download-settings-summary strong { font-size: 1.05rem; }
.download-settings-summary small { color: var(--muted); font-size: .78rem; }
.download-settings-shell > .download-workbench {
  margin: 0;
  border: 0;
  border-block-start: 1px solid var(--border);
  border-radius: 0;
  box-shadow: none;
}
.download-workbench {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 1.2rem;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgb(14 165 233 / 7%), transparent 38%),
    rgb(5 14 22 / 42%);
  box-shadow: inset 0 1px rgb(255 255 255 / 3%), var(--shadow-sm);
}
.download-workbench::before {
  position: absolute;
  inset-block-start: -8rem;
  inset-inline-end: -7rem;
  inline-size: 18rem;
  block-size: 18rem;
  border-radius: 50%;
  background: rgb(56 189 248 / 6%);
  content: "";
  pointer-events: none;
}
.workbench-heading {
  position: relative;
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1.25rem;
}
.workbench-heading h3 { margin-block-end: .3rem; font-size: 1.25rem; }
.workbench-heading p:last-child { max-inline-size: 62ch; margin: 0; color: var(--muted); }
.output-summary {
  flex: 0 0 auto;
  max-inline-size: 30rem;
  padding: .65rem .85rem;
  border: 1px solid rgb(56 189 248 / 28%);
  border-radius: 999px;
  color: #d9f3ff;
  background: rgb(14 165 233 / 9%);
  font-size: .82rem;
  font-weight: 800;
}
.preset-bar {
  position: relative;
  display: flex;
  padding-block: 1rem .85rem;
  align-items: center;
  gap: .55rem;
  overflow-x: auto;
  border-block-end: 1px solid var(--border);
}
.preset-bar > span { margin-inline-end: .2rem; color: var(--muted); font-size: .8rem; font-weight: 800; white-space: nowrap; }
.preset-chip {
  min-block-size: 36px;
  padding-inline: .8rem;
  border-color: var(--border-strong);
  border-radius: 999px;
  color: var(--muted);
  background: rgb(5 14 22 / 52%);
  box-shadow: none;
  font-size: .82rem;
  white-space: nowrap;
}
.preset-chip[aria-pressed="true"] {
  border-color: rgb(56 189 248 / 55%);
  color: var(--text);
  background: var(--primary-soft);
  box-shadow: inset 0 0 0 1px rgb(56 189 248 / 18%);
}
.basic-settings-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  padding-block-start: 1rem;
}
.workbench-hint { margin: 0; color: var(--muted); font-size: .82rem; }
.workbench-hint span { color: var(--primary); font-weight: 900; }
.stitch-advanced {
  grid-column: 1 / -1;
  padding: .8rem;
  border: 1px solid var(--border);
  border-radius: 11px;
  background: rgb(3 10 18 / 35%);
}
.stitch-advanced summary {
  display: flex;
  cursor: pointer;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 900;
}
.stitch-advanced summary small { color: var(--muted); font-size: .75rem; font-weight: 600; }
.stitch-settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
  margin-block-start: 1rem;
}
.stitch-settings-grid [data-smart-detector] {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
}
.stitch-profiles { margin-block-start: 1rem; padding-block-start: 1rem; border-block-start: 1px solid var(--border); }
.stitch-profiles h3 { margin-block: 0 .7rem; }
.profile-actions { display: grid; grid-template-columns: minmax(12rem, 1fr) auto auto; gap: .6rem; align-items: end; }
label { display: block; margin-block-end: .4rem; font-weight: 800; }
input, select, textarea {
  inline-size: 100%;
  min-block-size: 48px;
  padding-inline: .9rem;
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: 11px;
  background: rgb(5 14 22 / 72%);
  transition: border-color .3s ease-out, background .3s ease-out, box-shadow .3s ease-out;
}
input::placeholder { color: #718699; }
input:hover, select:hover { border-color: rgb(56 189 248 / 50%); }
input:focus, select:focus, textarea:focus { border-color: var(--primary); background: rgb(5 14 22 / 92%); box-shadow: 0 0 0 4px rgb(56 189 248 / 9%); }

.button, button {
  display: inline-flex;
  min-block-size: 44px;
  padding-inline: 1.1rem;
  border: 1px solid transparent;
  border-radius: 11px;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  color: #fff;
  background: linear-gradient(135deg, var(--primary-strong), var(--accent));
  box-shadow: 0 8px 22px rgb(14 165 233 / 18%);
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
  transition: transform .3s ease-out, filter .3s ease-out, border-color .3s ease-out, background .3s ease-out;
}
.button:hover, button:hover { filter: brightness(1.08); transform: translateY(-1px); }
.button-secondary { border-color: rgb(56 189 248 / 40%); color: var(--primary); background: var(--primary-soft); box-shadow: none; }
.button-ghost { border-color: var(--border-strong); color: var(--text); background: transparent; box-shadow: none; }
.button-danger { border-color: rgb(251 113 133 / 45%); color: #fecdd3; background: rgb(251 113 133 / 12%); box-shadow: none; }
.compact { min-block-size: 38px; padding-inline: .8rem; }
.full { inline-size: 100%; }
.button-link { display: inline-flex; min-block-size: 44px; padding-inline: 1rem; align-items: center; }
.notice { padding: .9rem 1rem; border: 1px solid; border-radius: var(--radius-sm); }
.notice.success { border-color: rgb(52 211 153 / 35%); color: #a7f3d0; background: rgb(52 211 153 / 8%); }
.form-error { min-block-size: 1.5rem; color: var(--danger); }

.library-toolbar {
  display: flex;
  margin-block: 1.75rem 1rem;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
}
.library-toolbar h2 { margin-block-end: .2rem; }
.section-heading > p:last-child { margin-block-end: 0; }
.toolbar-fields {
  display: grid;
  grid-template-columns: minmax(13rem, 1.45fr) minmax(10rem, 1fr);
  inline-size: min(100%, 31rem);
  gap: .65rem;
}
.toolbar-control-stack { display: grid; inline-size: min(100%, 31rem); gap: .45rem; }
.toolbar-control-stack .toolbar-fields { inline-size: 100%; }
.chapter-toolbar-control { inline-size: min(100%, 43rem); }
.chapter-toolbar-fields { grid-template-columns: minmax(11rem, 1.2fr) minmax(9rem, .85fr) minmax(12rem, 1fr); }
.filter-feedback { display: flex; min-block-size: 1.5rem; align-items: center; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .78rem; }
.text-action {
  min-block-size: auto;
  padding: 0;
  border: 0;
  border-radius: 0;
  color: var(--primary);
  background: transparent;
  box-shadow: none;
  font-size: .78rem;
}
.text-action:hover { filter: none; transform: none; text-decoration: underline; }
.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 17rem));
  justify-content: start;
  gap: 1.25rem;
}
.series-card {
  min-inline-size: 0;
  overflow: hidden;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
  animation: surface-arrival .45s both;
}
.series-card:nth-child(2) { animation-delay: .07s; }
.series-card:nth-child(3) { animation-delay: .14s; }
.series-card:nth-child(4) { animation-delay: .21s; }
.series-card:hover { transform: translateY(-4px); border-color: rgb(56 189 248 / 42%); box-shadow: var(--shadow-lg); }
.cover-link { display: block; color: inherit; }
.cover-frame {
  position: relative;
  display: grid;
  overflow: hidden;
  isolation: isolate;
  place-items: center;
  aspect-ratio: 4 / 5.25;
  background: linear-gradient(145deg, #18354c, #0b1722);
}
.cover-frame::after {
  position: absolute;
  inset: auto 0 0;
  z-index: 2;
  block-size: 30%;
  background: linear-gradient(transparent, rgb(5 12 18 / 70%));
  content: "";
  pointer-events: none;
}
.cover-frame img {
  position: absolute;
  inset: 0;
  z-index: 1;
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  transition: transform .35s ease;
}
.series-card:hover .cover-frame img { transform: scale(1.025); }
.cover-fallback { color: rgb(255 255 255 / 22%); font-size: 4rem; font-weight: 900; }
.new-badge {
  position: absolute;
  inset-block-start: .75rem;
  inset-inline-start: .75rem;
  z-index: 3;
  padding: .28rem .62rem;
  border-radius: 999px;
  color: #052e22;
  background: var(--success);
  box-shadow: 0 6px 16px rgb(0 0 0 / 24%);
  font-size: .78rem;
  font-weight: 900;
}
.series-card-body { padding: 1rem; }
.card-title-row { display: flex; align-items: start; justify-content: space-between; gap: .55rem; }
.card-title-row h3 { margin-block-end: .25rem; font-size: 1.12rem; }
.card-title-row h3 a { color: var(--text); text-decoration: none; }
.latest { margin-block-end: .75rem; color: var(--muted); }
.latest strong { color: var(--text); }
.language-pair {
  display: flex;
  margin-block-end: .7rem;
  align-items: center;
  flex-wrap: wrap;
  gap: .45rem;
  color: var(--muted);
  font-size: .8rem;
}
.language-pair span { padding: .2rem .5rem; border-radius: 999px; background: var(--primary-soft); }
.language-pair b { color: var(--primary); }
.status {
  display: inline-flex;
  inline-size: max-content;
  padding: .2rem .55rem;
  border-radius: 999px;
  color: var(--muted);
  background: var(--surface-soft);
  font-size: .76rem;
  font-weight: 900;
  white-space: nowrap;
}
.status-active, .status-downloaded { color: #a7f3d0; background: rgb(52 211 153 / 11%); }
.status-paused, .status-processing { color: #fde68a; background: rgb(251 191 36 / 10%); }
.status-available, .status-new { color: #bae6fd; background: rgb(56 189 248 / 11%); }
.status-attention { color: #fecdd3; background: rgb(251 113 133 / 10%); }
.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-block: .75rem .9rem;
  gap: .4rem;
}
.mini-stats div { padding: .5rem .35rem; text-align: center; }
.mini-stats dd { font-size: .95rem; }
.empty-state { grid-column: 1 / -1; padding-block: 2.5rem; color: var(--muted); text-align: center; }
.empty-icon {
  display: grid;
  inline-size: 3.5rem;
  block-size: 3.5rem;
  margin: 0 auto 1rem;
  border-radius: 1rem;
  place-items: center;
  color: var(--primary);
  background: var(--primary-soft);
  font-size: 2rem;
}

.breadcrumbs {
  display: flex;
  min-block-size: auto;
  margin-block-end: 1rem;
  padding: 0;
  align-items: center;
  gap: .55rem;
  color: var(--muted);
  font-size: .9rem;
}
.breadcrumbs a { text-decoration: none; }
.series-overview {
  display: grid;
  grid-template-columns: 10.5rem minmax(0, 1fr);
  padding: 1.25rem;
  align-items: stretch;
  gap: 1.5rem;
}
.detail-cover {
  inline-size: 10.5rem;
  align-self: start;
  border: 1px solid var(--border-strong);
  border-radius: 15px;
  box-shadow: var(--shadow-lg);
}
.series-overview-content {
  display: flex;
  min-inline-size: 0;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
}
.series-overview-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1.5rem;
}
.series-identity { min-inline-size: 0; }
.series-identity h1 {
  margin-block-end: .45rem;
  overflow-wrap: anywhere;
  font-size: clamp(1.85rem, 3.5vw, 3rem);
}
.series-identity .hero-copy strong { color: var(--text); }
.action-row { flex: 0 0 auto; flex-wrap: wrap; justify-content: end; }
.detail-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.detail-stats div { padding: .7rem .85rem; }
.detail-stats dd { font-size: 1.2rem; }

.preview-layout {
  display: grid;
  grid-template-columns: minmax(10rem, 15rem) minmax(0, 1fr);
  max-inline-size: 70rem;
  margin-inline: auto;
  gap: 2rem;
}
.preview-cover { align-self: start; border-radius: 16px; }
.preview-content h1 { font-size: clamp(2rem, 4vw, 3.2rem); }
.preview-options {
  display: grid;
  grid-template-columns: minmax(12rem, .6fr) minmax(0, 1.4fr);
  margin-block: 1.25rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgb(5 14 22 / 42%);
  gap: 1.25rem;
}
.preview-options h2 { margin-block-end: .35rem; font-size: 1.25rem; }
.preview-options p { color: var(--muted); }
.language-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .8rem; }
.language-fields .field { margin: 0; }
.import-choices {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-block: 1rem;
  padding: 0;
  border: 0;
  gap: .7rem;
}
.import-choices legend { grid-column: 1 / -1; margin-block-end: .5rem; font-size: 1.15rem; font-weight: 900; }
.choice-card {
  position: relative;
  display: flex;
  min-block-size: 7.2rem;
  margin: 0;
  padding: .9rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  align-items: start;
  gap: .65rem;
  background: rgb(5 14 22 / 55%);
  cursor: pointer;
  transition: border-color .25s ease-out, background .25s ease-out, transform .25s ease-out;
}
.choice-card:hover { border-color: rgb(56 189 248 / 55%); transform: translateY(-2px); }
.choice-card:has(input:checked) { border-color: var(--primary); background: var(--primary-soft); box-shadow: inset 0 0 0 1px rgb(56 189 248 / 30%); }
.choice-card input { flex: 0 0 auto; inline-size: 1.05rem; min-block-size: auto; block-size: 1.05rem; margin-block-start: .25rem; accent-color: var(--primary-strong); }
.choice-card span { display: grid; gap: .25rem; }
.choice-card small { color: var(--muted); font-weight: 400; line-height: 1.45; }
.choice-warning:has(input:checked) { border-color: var(--warning); background: rgb(251 191 36 / 8%); }
.chapter-section { margin-block-start: 2rem; }
.chapter-list { display: grid; inline-size: 100%; max-inline-size: 70rem; margin-inline: auto; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 1.1rem; }
.chapter-row {
  --chapter-accent: #dc3545;
  --chapter-accent-deep: #a91f2c;
  display: flex;
  min-inline-size: 0;
  padding: 0;
  overflow: hidden;
  flex-direction: column;
  gap: 0;
  transition: transform .3s ease-out, border-color .3s ease-out, box-shadow .3s ease-out;
}
.chapter-row[data-category="downloaded"] { --chapter-accent: #0f9f78; --chapter-accent-deep: #08765b; }
.chapter-row[data-category="processing"] { --chapter-accent: #168fd1; --chapter-accent-deep: #12659b; }
.chapter-row[data-category="paused"] { --chapter-accent: #d7951c; --chapter-accent-deep: #9a6410; }
.chapter-row[data-category="attention"] { --chapter-accent: #e34c62; --chapter-accent-deep: #a9233a; }
.chapter-row:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--chapter-accent) 48%, transparent); box-shadow: var(--shadow-lg); }
.chapter-card-visual {
  position: relative;
  display: grid;
  min-block-size: 8.25rem;
  overflow: hidden;
  place-content: center;
  place-items: center;
  background:
    radial-gradient(circle at 18% 8%, rgb(255 255 255 / 16%), transparent 10rem),
    linear-gradient(145deg, var(--chapter-accent), var(--chapter-accent-deep));
  isolation: isolate;
}
.chapter-card-visual::after {
  position: absolute;
  inset: auto -8% -48% 35%;
  z-index: -1;
  aspect-ratio: 1;
  border: 1px solid rgb(255 255 255 / 12%);
  border-radius: 50%;
  content: "";
}
.chapter-card-visual small { color: rgb(255 255 255 / 76%); font-size: .75rem; font-weight: 800; }
.chapter-card-visual > strong { color: #fff; font-size: clamp(1.8rem, 3.5vw, 2.45rem); line-height: 1; text-shadow: 0 4px 15px rgb(0 0 0 / 28%); }
.chapter-book { display: flex; margin-block-end: .45rem; filter: drop-shadow(0 6px 7px rgb(0 0 0 / 28%)); }
.chapter-book i { inline-size: 1.25rem; block-size: 1.6rem; border-radius: 4px 1px 1px 5px; background: #fff; transform: perspective(30px) rotateY(-8deg); }
.chapter-book i + i { border-radius: 1px 4px 5px 1px; transform: perspective(30px) rotateY(8deg); }
.chapter-card-content { display: flex; min-block-size: 10.5rem; padding: .85rem; flex: 1; flex-direction: column; gap: .55rem; background: linear-gradient(180deg, rgb(14 29 42 / 98%), rgb(9 21 31 / 98%)); }
.chapter-card-header { display: flex; align-items: center; justify-content: space-between; gap: .7rem; }
.chapter-number { display: flex; align-items: baseline; gap: .45rem; }
.chapter-number small, .chapter-state small, .chapter-meta { color: var(--muted); }
.chapter-number strong { font-size: 1.25rem; }
.chapter-card-message { min-block-size: 1.35rem; margin: 0; color: var(--muted); font-size: .8rem; }
.chapter-meta { display: flex; padding-block-end: .5rem; flex-wrap: wrap; gap: .6rem; border-block-end: 1px solid var(--border); font-size: .75rem; }
.chapter-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); margin-block-start: auto; gap: .5rem; }
.chapter-actions > *, .chapter-actions button, .chapter-actions a { inline-size: 100%; }
.danger-zone {
  margin-block-start: 3rem;
  padding-block-start: 1rem;
  border-block-start: 1px solid var(--border);
  color: var(--muted);
}
.danger-zone summary { inline-size: max-content; cursor: pointer; }
.danger-zone > div {
  max-inline-size: 48rem;
  margin-block-start: 1rem;
  padding: 1.25rem;
  border: 1px solid rgb(251 113 133 / 28%);
  border-radius: 14px;
  background: rgb(251 113 133 / 5%);
}
.page-heading { margin-block-end: 1.5rem; }

:focus-visible { outline: 3px solid var(--warning); outline-offset: 3px; }
.visually-hidden {
  position: absolute;
  inline-size: 1px;
  block-size: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .topbar-inner, main { padding-inline: 1rem; }
  .library-hero { grid-template-columns: minmax(0, 1fr); gap: 1.5rem; }
  .library-hero h1 { max-inline-size: 20ch; }
  .add-form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .add-form-grid .grow { grid-column: 1 / -1; }
  .stats-strip { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .stats-strip div { padding: .7rem; }
  .series-overview { grid-template-columns: 8.5rem minmax(0, 1fr); }
  .detail-cover { inline-size: 8.5rem; }
  .series-overview-heading { flex-direction: column; gap: .75rem; }
  .action-row { justify-content: start; }
  .detail-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 700px) {
  .site-header { position: relative; }
  main { padding-block: 1.5rem 4rem; }
  .brand-name { display: none; }
  .topbar-inner { min-block-size: 4rem; }
  .nav-actions { flex: 1; justify-content: space-between; }
  .primary-nav { overflow-x: auto; }
  .nav-link { padding-inline: .55rem; font-size: .9rem; }
  .logout-button { flex: 0 0 2.6rem; inline-size: 2.6rem; padding: 0; }
  .logout-label { display: none; }
  .logout-icon { display: inline; color: var(--text); font-size: 1.15rem; }
  .library-hero { padding: 1.35rem; }
  .library-hero h1 { font-size: clamp(1.9rem, 9vw, 2.55rem); }
  .stats-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .library-toolbar, .inline-form { align-items: stretch; flex-direction: column; }
  .add-form-grid { grid-template-columns: minmax(0, 1fr); }
  .add-form-grid .grow { grid-column: auto; }
  .add-form-grid .button { margin-block-end: 0; }
  .toolbar-fields { grid-template-columns: minmax(0, 1fr); inline-size: 100%; }
  .toolbar-control-stack { inline-size: 100%; }
  .series-grid { grid-template-columns: minmax(0, 1fr); }
  .series-card { display: grid; grid-template-columns: 7.5rem minmax(0, 1fr); }
  .cover-link, .cover-frame { block-size: 100%; min-block-size: 13.5rem; }
  .cover-frame { aspect-ratio: auto; }
  .series-card-body { display: flex; min-inline-size: 0; flex-direction: column; justify-content: center; }
  .card-title-row { flex-direction: column; }
  .series-overview { grid-template-columns: minmax(0, 1fr); }
  .detail-cover { inline-size: 7.5rem; justify-self: center; }
  .series-overview-heading { align-items: center; text-align: center; }
  .action-row { justify-content: center; }
  .preview-layout { grid-template-columns: minmax(0, 1fr); }
  .preview-cover { inline-size: 9rem; }
  .preview-options { grid-template-columns: minmax(0, 1fr); }
  .language-fields, .import-choices, .resize-options {
    grid-template-columns: minmax(0, 1fr);
  }
  .download-workbench { padding: .9rem; }
  .download-settings-summary { grid-template-columns: minmax(0, 1fr); padding-block: .9rem; gap: .7rem; }
  .download-settings-summary .output-summary { inline-size: 100%; }
  .workbench-heading { flex-direction: column; gap: .8rem; }
  .output-summary { inline-size: 100%; max-inline-size: none; border-radius: 10px; }
  .basic-settings-grid { grid-template-columns: minmax(0, 1fr); }
  .preset-bar { margin-inline: -.1rem; }
  .stitch-settings-grid, .stitch-settings-grid [data-smart-detector], .profile-actions { grid-template-columns: 1fr; }
  .chapter-list { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 420px) {
  .nav-link { font-size: .82rem; }
  .nav-link:nth-child(2) { display: none; }
  .add-series summary { align-items: start; }
  .summary-action { font-size: .85rem; }
  .series-card { grid-template-columns: 6.75rem minmax(0, 1fr); }
  .mini-stats { gap: .25rem; }
  .mini-stats dt { font-size: .7rem; }
}

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

/* Live operations cockpit */
.library-tabs {
  display: flex;
  margin-block: 1.25rem 1.5rem;
  padding: .35rem;
  gap: .35rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgb(7 16 25 / 62%);
}
.library-tabs a {
  display: inline-flex;
  padding: .7rem 1rem;
  align-items: center;
  gap: .5rem;
  border-radius: 10px;
  color: var(--muted);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}
.library-tabs a:hover, .library-tabs a.is-active { color: var(--text); background: var(--surface-strong); }
.library-tabs span { min-inline-size: 1.5rem; padding-inline: .4rem; border-radius: 999px; background: var(--primary-soft); color: var(--primary); text-align: center; }
.card-management-actions { display: grid; gap: .5rem; }
.card-management-actions button { inline-size: 100%; }

.chapter-live-card { transition: border-color .2s ease, box-shadow .2s ease; }
.chapter-live-card[data-state="DOWNLOADING"],
.chapter-live-card[data-state="CONVERTING"],
.chapter-live-card[data-state="UPLOADING"] {
  border-color: rgb(56 189 248 / 45%);
  box-shadow: 0 12px 40px rgb(14 165 233 / 10%);
}
.chapter-progress-disclosure {
  inline-size: 100%;
  overflow: hidden;
  border: 1px solid rgb(56 189 248 / 18%);
  border-radius: 12px;
  background: linear-gradient(135deg, rgb(14 165 233 / 6%), rgb(4 12 20 / 54%));
  box-shadow: inset 0 1px rgb(255 255 255 / 3%);
}
.chapter-progress-disclosure summary {
  display: flex;
  min-block-size: 3rem;
  padding: .65rem .75rem;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  cursor: pointer;
  list-style: none;
  transition: background .3s ease-out;
}
.chapter-progress-disclosure summary::-webkit-details-marker { display: none; }
.chapter-progress-disclosure summary:hover { background: rgb(56 189 248 / 7%); }
.progress-summary-value { display: inline-flex; align-items: center; gap: .6rem; color: var(--primary); }
.progress-summary-value strong { font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.progress-summary-value > i {
  inline-size: .55rem;
  block-size: .55rem;
  border-inline-end: 2px solid currentColor;
  border-block-end: 2px solid currentColor;
  transform: rotate(45deg);
  transition: transform .3s ease-out;
}
.chapter-progress-disclosure[open] .progress-summary-value > i { transform: rotate(225deg); }
.chapter-progress-disclosure[open] .chapter-progress-panel { animation: surface-arrival .3s ease-out; }
.chapter-progress-panel {
  display: grid;
  inline-size: 100%;
  padding: .75rem;
  gap: .7rem;
  border-block-start: 1px solid rgb(56 189 248 / 15%);
}
.windows-tools-disclosure[hidden] { display: none !important; }
.windows-tools-disclosure {
  inline-size: 100%;
  overflow: hidden;
  border: 1px solid rgb(56 189 248 / 24%);
  border-radius: 12px;
  background: linear-gradient(135deg, rgb(14 165 233 / 9%), rgb(16 32 47 / 72%));
  box-shadow: inset 0 1px rgb(255 255 255 / 4%);
  transition: border-color .3s ease-out, background-color .3s ease-out;
}
.windows-tools-disclosure[data-phase="synced"],
.windows-tools-disclosure[data-phase="translated"] { border-color: rgb(52 211 153 / 34%); }
.windows-tools-disclosure[data-phase="error"] { border-color: rgb(251 113 133 / 42%); }
.windows-tools-disclosure summary {
  display: flex;
  min-block-size: 3rem;
  padding: .65rem .75rem;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  cursor: pointer;
  list-style: none;
  transition: background .3s ease-out;
}
.windows-tools-disclosure summary::-webkit-details-marker { display: none; }
.windows-tools-disclosure summary:hover { background: rgb(56 189 248 / 8%); }
.windows-tools-heading { display: flex; min-inline-size: 0; align-items: center; flex-wrap: wrap; gap: .45rem .6rem; }
.windows-tools-heading small { color: var(--muted); font-size: .72rem; }
.windows-tools-heading small.is-ready { color: var(--success); }
.windows-mark {
  display: inline-grid;
  inline-size: 1.7rem;
  block-size: 1.7rem;
  place-items: center;
  border: 1px solid rgb(56 189 248 / 28%);
  border-radius: 7px;
  background: rgb(14 165 233 / 12%);
  color: var(--primary);
  font-weight: 900;
}
.windows-phase {
  flex: 0 0 auto;
  padding: .3rem .55rem;
  border-radius: 999px;
  background: rgb(56 189 248 / 10%);
  color: var(--primary);
  font-size: .72rem;
  font-weight: 800;
}
.windows-tools-disclosure[data-phase="synced"] .windows-phase,
.windows-tools-disclosure[data-phase="translated"] .windows-phase { background: rgb(52 211 153 / 11%); color: var(--success); }
.windows-tools-disclosure[data-phase="error"] .windows-phase { background: rgb(251 113 133 / 11%); color: #fda4af; }
.windows-tools-disclosure[aria-busy="true"] .windows-mark { animation: live-pulse 1.6s ease-in-out infinite; }
.windows-tools-disclosure[open] .windows-tools-panel { animation: surface-arrival .3s ease-out; }
.windows-tools-panel {
  display: grid;
  padding: .75rem;
  gap: .7rem;
  border-block-start: 1px solid rgb(56 189 248 / 16%);
}
.windows-tools-status {
  display: flex;
  padding: .65rem .75rem;
  align-items: flex-start;
  gap: .55rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgb(7 16 25 / 34%);
}
.windows-tools-status > span { inline-size: .5rem; block-size: .5rem; margin-block-start: .35rem; flex: 0 0 auto; border-radius: 50%; background: var(--primary); }
.windows-tools-status p { margin: 0; color: var(--muted); font-size: .8rem; line-height: 1.55; }
.windows-operation-history[hidden] { display: none !important; }
.windows-operation-history {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .5rem;
}
.windows-operation-history > div {
  display: flex;
  min-inline-size: 0;
  padding: .55rem .65rem;
  align-items: center;
  gap: .5rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: rgb(7 16 25 / 28%);
  transition: border-color .3s ease-out, background-color .3s ease-out;
}
.windows-operation-history > div > span {
  display: inline-grid;
  inline-size: 1.45rem;
  block-size: 1.45rem;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 50%;
  background: rgb(148 163 184 / 10%);
  color: var(--muted);
  font-size: .72rem;
  font-weight: 900;
}
.windows-operation-history > div.is-complete { border-color: rgb(52 211 153 / 28%); background: rgb(52 211 153 / 5%); }
.windows-operation-history > div.is-complete > span { background: rgb(52 211 153 / 14%); color: var(--success); }
.windows-operation-history p { display: grid; min-inline-size: 0; margin: 0; gap: .12rem; }
.windows-operation-history strong { color: var(--text); font-size: .72rem; }
.windows-operation-history small { overflow: hidden; color: var(--muted); font-size: .64rem; text-overflow: ellipsis; white-space: nowrap; }
.windows-tools-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .5rem; }
.windows-tools-actions button { inline-size: 100%; min-block-size: 2.55rem; padding: .5rem .65rem; font-size: .78rem; }
.windows-tools-actions button[hidden] { display: none !important; }
.windows-tools-note { margin: 0; color: #718394; font-size: .7rem; line-height: 1.5; }
.chapter-live-card[data-state="DISCOVERED"] .chapter-progress-disclosure,
.chapter-live-card[data-state="CANCELLED"] .chapter-progress-disclosure { display: none; }
.progress-heading { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.progress-heading > strong { color: var(--primary); font-size: 1.3rem; font-variant-numeric: tabular-nums; }
.progress-heading span { color: var(--muted); font-size: .8rem; }
.live-card-heading { display: flex; min-inline-size: 0; align-items: center; flex-wrap: wrap; gap: .45rem .8rem; }
.live-card-signal { display: inline-flex; align-items: center; gap: .4rem; color: var(--text) !important; font-weight: 800; }
.live-card-signal i { inline-size: .5rem; block-size: .5rem; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px rgb(52 211 153 / 10%); }
.progress-track {
  position: relative;
  block-size: .55rem;
  overflow: hidden;
  border-radius: 999px;
  background: rgb(148 163 184 / 14%);
}
.progress-track > span {
  display: block;
  min-inline-size: .2rem;
  block-size: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #2563eb, var(--primary), var(--success));
  box-shadow: 0 0 20px rgb(56 189 248 / 45%);
  transition: width .45s ease;
}
.progress-track-large { block-size: .8rem; }
.progress-counters { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .5rem; }
.progress-counters div { padding: .55rem .7rem; border: 1px solid var(--border); border-radius: 10px; background: rgb(7 16 25 / 36%); }
.progress-counters dt { color: var(--muted); font-size: .72rem; }
.progress-counters dd { margin: 0; font-weight: 800; font-variant-numeric: tabular-nums; }
.phase-rail {
  display: grid;
  grid-template-columns: repeat(7, minmax(7rem, 1fr));
  margin: 0;
  padding: .15rem 0 .25rem;
  gap: .35rem;
  overflow-x: auto;
  list-style: none;
}
.phase-rail li { display: flex; align-items: center; gap: .35rem; color: #718394; font-size: .72rem; white-space: nowrap; }
.phase-rail li span { inline-size: .55rem; block-size: .55rem; flex: 0 0 auto; border-radius: 50%; background: #526272; }
.phase-rail li.is-completed { color: var(--success); }
.phase-rail li.is-completed span { background: var(--success); }
.phase-rail li.is-active { color: var(--text); font-weight: 800; }
.phase-rail li.is-active span { background: var(--primary); box-shadow: 0 0 0 5px rgb(56 189 248 / 12%); animation: live-pulse 1.6s ease-in-out infinite; }
.chapter-progress-panel .progress-counters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.chapter-progress-panel .phase-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); overflow: visible; gap: .45rem .7rem; }
.chapter-progress-panel .phase-rail li { min-inline-size: 0; white-space: normal; line-height: 1.35; }
.live-connection { display: flex; margin: .25rem 0 0; align-items: center; gap: .45rem; color: var(--success); font-size: .8rem; font-weight: 700; }
.live-connection span { inline-size: .5rem; block-size: .5rem; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 5px rgb(52 211 153 / 10%); }
.live-connection.is-offline { color: var(--warning); }
.chapter-focus-progress { display: grid; margin-block-end: 1.25rem; padding: 1.35rem; gap: 1rem; }
.chapter-focus-progress h2 { margin: 0; font-size: 1.15rem; }
.focus-counters div { padding: .8rem; }
.phase-rail-focus { padding-block-start: .4rem; }
.management-grid { display: grid; max-inline-size: none !important; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.management-grid section { padding: 1rem; border: 1px solid var(--border); border-radius: 12px; background: rgb(7 16 25 / 25%); }
.management-grid h2 { font-size: 1.05rem; }
.management-grid p { min-block-size: 5rem; }

@keyframes live-pulse { 50% { opacity: .55; transform: scale(.82); } }
@keyframes surface-arrival {
  from { transform: translateY(10px); }
  to { transform: translateY(0); }
}

@media (max-width: 900px) {
  .chapter-toolbar-fields { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .chapter-toolbar-fields [data-chapter-sort] { grid-column: 1 / -1; }
  .chapter-progress-panel { inline-size: 100%; }
  .progress-counters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .management-grid { grid-template-columns: minmax(0, 1fr); }
  .management-grid p { min-block-size: auto; }
}

@media (max-width: 560px) {
  .chapter-toolbar-fields { grid-template-columns: minmax(0, 1fr); }
  .chapter-toolbar-fields [data-chapter-sort] { grid-column: auto; }
  .chapter-progress-panel { padding: .75rem; }
  .progress-counters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .phase-rail { grid-template-columns: repeat(7, 7.5rem); }
  .chapter-progress-panel .phase-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .windows-tools-actions { grid-template-columns: minmax(0, 1fr); }
  .windows-operation-history { grid-template-columns: minmax(0, 1fr); }
  .windows-tools-disclosure summary { align-items: flex-start; }
}