:root {
  --paper: #f4ead8;
  --paper-deep: #e4d3b6;
  --card: #fbf6eb;
  --card-aged: #f0dfc0;
  --ink: #271f19;
  --ink-muted: #6e5d4f;
  --ink-soft: #937f6c;
  --red: #a33a2c;
  --red-deep: #79271f;
  --green: #385c48;
  --blue-ink: #263f5c;
  --rule: rgba(86, 62, 40, 0.25);
  --shadow: rgba(55, 38, 21, 0.13);
  --focus: #7b3f23;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: "Gill Sans", "Trebuchet MS", Arial, sans-serif;
  --space-1: 0.35rem;
  --space-2: 0.65rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.25rem;
  --space-6: 3.25rem;
}

* {
  box-sizing: border-box;
}

html {
  color: var(--ink);
  background:
    linear-gradient(rgba(95, 70, 40, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(95, 70, 40, 0.035) 1px, transparent 1px),
    var(--paper);
  background-size: 100% 34px, 34px 100%, auto;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  font-family: var(--font-sans);
  line-height: 1.5;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    radial-gradient(circle at 16% 7%, rgba(255, 252, 243, 0.72), transparent 28rem),
    linear-gradient(105deg, rgba(95, 58, 31, 0.06), transparent 36%);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 10;
  padding: var(--space-2) var(--space-3);
  color: var(--card);
  background: var(--ink);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header,
main,
.site-footer {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}

.site-header {
  display: grid;
  grid-template-columns: minmax(5rem, 8rem) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding: clamp(2rem, 7vw, 5rem) 0 var(--space-5);
  border-bottom: 1px solid var(--rule);
}

.header-mark {
  display: grid;
  place-items: center;
  align-self: start;
  min-height: 6rem;
  border: 2px solid var(--ink);
  color: var(--red-deep);
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.25rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transform: rotate(-2deg);
  background: rgba(255, 252, 244, 0.45);
  box-shadow: 0.4rem 0.45rem 0 var(--paper-deep);
}

.kicker {
  margin: 0 0 var(--space-1);
  color: var(--red-deep);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1;
}

h1 {
  max-width: 12ch;
  margin-bottom: var(--space-3);
  font-size: clamp(3.1rem, 9vw, 7.4rem);
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
}

.subtitle {
  max-width: 44rem;
  margin-bottom: 0;
  color: var(--ink-muted);
  font-family: var(--font-serif);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
}

main {
  padding: var(--space-5) 0;
}

.ledger {
  position: relative;
  padding: clamp(1rem, 3vw, 1.6rem);
  border: 1px solid var(--rule);
  background:
    linear-gradient(90deg, transparent 0, transparent calc(100% - 6px), rgba(163, 58, 44, 0.18) calc(100% - 6px)),
    repeating-linear-gradient(0deg, rgba(38, 31, 25, 0.035) 0 1px, transparent 1px 2.1rem),
    rgba(251, 246, 235, 0.7);
  box-shadow: 0 1rem 2rem var(--shadow);
}

.ledger-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.progress-percent {
  color: var(--blue-ink);
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 0.9;
}

.progress-shell {
  height: 0.75rem;
  overflow: hidden;
  border: 1px solid rgba(39, 31, 25, 0.5);
  background: rgba(255, 252, 244, 0.66);
}

.progress-bar {
  width: 0%;
  height: 100%;
  background:
    repeating-linear-gradient(135deg, rgba(255, 255, 255, 0.18) 0 7px, transparent 7px 14px),
    var(--green);
  transition: width 480ms ease;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin: var(--space-4) 0 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.stats-grid > div {
  min-width: 0;
  padding: var(--space-3);
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: rgba(255, 252, 244, 0.36);
}

dt {
  color: var(--ink-soft);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

dd {
  margin: 0.25rem 0 0;
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1.05;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-3);
  margin: var(--space-5) 0;
}

.segmented-control {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 0;
  padding: 0;
  border: 1px solid var(--ink);
  background: rgba(251, 246, 235, 0.78);
}

.segmented-control legend {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.segmented-control label {
  min-width: 6rem;
  text-align: center;
}

.segmented-control input {
  position: absolute;
  opacity: 0;
}

.segmented-control span {
  display: block;
  padding: 0.72rem 1rem;
  border-right: 1px solid var(--ink);
  transition: background 160ms ease, color 160ms ease;
}

.segmented-control label:last-child span {
  border-right: 0;
}

.segmented-control input:checked + span {
  color: var(--card);
  background: var(--ink);
}

.sort-control {
  display: grid;
  gap: var(--space-1);
  min-width: min(100%, 17rem);
  color: var(--ink-muted);
  font-size: 0.83rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sort-control select,
.date-fields input {
  width: 100%;
  border: 1px solid var(--ink);
  border-radius: 0;
  color: var(--ink);
  background: var(--card);
}

.sort-control select {
  padding: 0.72rem 2.4rem 0.72rem 0.8rem;
}

.list-heading {
  margin-bottom: var(--space-3);
}

.book-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.book-entry {
  position: relative;
  display: grid;
  grid-template-columns: 3.35rem minmax(0, 1fr);
  gap: var(--space-3);
  min-height: 19rem;
  padding: var(--space-4);
  border: 1px solid rgba(39, 31, 25, 0.45);
  color: var(--ink);
  background:
    linear-gradient(90deg, rgba(163, 58, 44, 0.22) 0 2px, transparent 2px 100%),
    repeating-linear-gradient(0deg, transparent 0 2.08rem, rgba(39, 31, 25, 0.08) 2.08rem calc(2.08rem + 1px)),
    var(--card);
  box-shadow: 0.35rem 0.45rem 0 var(--card-aged), 0 1rem 2rem var(--shadow);
  transition: transform 180ms ease, box-shadow 180ms ease;
}

.book-entry:hover {
  transform: translateY(-3px);
  box-shadow: 0.45rem 0.55rem 0 var(--card-aged), 0 1.3rem 2.2rem rgba(55, 38, 21, 0.18);
}

.book-entry.completed {
  background:
    linear-gradient(90deg, rgba(56, 92, 72, 0.32) 0 2px, transparent 2px 100%),
    repeating-linear-gradient(0deg, transparent 0 2.08rem, rgba(39, 31, 25, 0.07) 2.08rem calc(2.08rem + 1px)),
    #f7efdf;
}

.catalog-number {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  color: var(--ink-soft);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.14em;
}

.book-content {
  min-width: 0;
}

.book-topline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.status {
  display: inline-flex;
  align-items: center;
  min-height: 1.8rem;
  padding: 0.18rem 0.55rem;
  border: 1px solid currentColor;
  color: var(--blue-ink);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

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

.book-title {
  margin-bottom: 0.35rem;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
  overflow-wrap: anywhere;
}

.book-author {
  margin-bottom: var(--space-4);
  color: var(--ink-muted);
  font-family: var(--font-serif);
  font-size: 1.05rem;
}

.book-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 var(--space-4);
  background: var(--rule);
}

.book-meta div {
  min-width: 0;
  padding: 0.72rem;
  background: rgba(255, 252, 244, 0.6);
}

.book-meta dt {
  font-size: 0.68rem;
}

.book-meta dd {
  font-size: 1.08rem;
}

.completion-note {
  min-height: 3.4rem;
  margin-bottom: var(--space-4);
  color: var(--ink-muted);
  font-family: var(--font-serif);
}

.completion-note strong {
  color: var(--green);
  font-weight: 500;
}

.book-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.button {
  min-height: 2.7rem;
  padding: 0.65rem 0.95rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  transition: transform 150ms ease, background 150ms ease, color 150ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button.primary {
  color: var(--card);
  background: var(--ink);
}

.button.secondary {
  color: var(--ink);
  background: rgba(255, 252, 244, 0.55);
}

.button.danger {
  color: var(--red-deep);
  background: transparent;
}

.stamp {
  position: absolute;
  right: 1.1rem;
  top: 1.1rem;
  padding: 0.22rem 0.55rem;
  border: 2px solid var(--red);
  color: var(--red);
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  line-height: 1;
  opacity: 0;
  text-transform: uppercase;
  transform: rotate(-8deg) scale(1.18);
  pointer-events: none;
}

.completed .stamp {
  animation: stamp-in 280ms ease forwards;
}

@keyframes stamp-in {
  to {
    opacity: 0.75;
    transform: rotate(-8deg) scale(1);
  }
}

.empty-state {
  padding: var(--space-5);
  border: 1px dashed var(--ink-soft);
  color: var(--ink-muted);
  background: rgba(251, 246, 235, 0.7);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  text-align: center;
}

.site-footer {
  padding: var(--space-5) 0 var(--space-6);
  border-top: 1px solid var(--rule);
  color: var(--ink-muted);
  font-family: var(--font-serif);
  text-align: center;
}

.date-dialog {
  width: min(92vw, 32rem);
  padding: 0;
  border: 1px solid var(--ink);
  color: var(--ink);
  background: var(--card);
  box-shadow: 0 1.5rem 4rem rgba(31, 24, 17, 0.3);
}

.date-dialog::backdrop {
  background: rgba(39, 31, 25, 0.42);
}

.date-dialog form {
  padding: var(--space-4);
}

.dialog-header {
  margin-bottom: var(--space-4);
}

.dialog-book-title {
  margin: var(--space-2) 0 0;
  color: var(--ink-muted);
  font-family: var(--font-serif);
}

.date-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.date-fields label {
  display: grid;
  gap: var(--space-1);
  color: var(--ink-muted);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.date-fields input {
  padding: 0.72rem 0.8rem;
}

.form-error {
  margin: var(--space-3) 0 0;
  color: var(--red-deep);
  font-weight: 700;
}

.dialog-actions {
  display: flex;
  justify-content: end;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

@media (max-width: 820px) {
  .site-header {
    grid-template-columns: 1fr;
  }

  .header-mark {
    width: 8rem;
    min-height: 4.5rem;
  }

  .stats-grid,
  .book-list {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 560px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 1rem, 1120px);
  }

  .ledger-heading,
  .controls {
    display: grid;
  }

  .segmented-control,
  .segmented-control label,
  .sort-control {
    width: 100%;
  }

  .segmented-control {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .segmented-control span {
    padding-inline: 0.5rem;
  }

  .book-entry {
    grid-template-columns: 1fr;
    min-height: 0;
    padding: var(--space-3);
  }

  .catalog-number {
    writing-mode: horizontal-tb;
    transform: none;
  }

  .book-meta,
  .date-fields {
    grid-template-columns: 1fr;
  }

  .dialog-actions {
    display: grid;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}