/* Fonts: Old Standard TT (body) and IM Fell English SC (titles), both SIL OFL, self-hosted. */
@font-face {
  font-family: 'Old Standard TT';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/old-standard-tt-400.woff2') format('woff2');
}

@font-face {
  font-family: 'Old Standard TT';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/old-standard-tt-400-italic.woff2') format('woff2');
}

@font-face {
  font-family: 'Old Standard TT';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../assets/fonts/old-standard-tt-700.woff2') format('woff2');
}

@font-face {
  font-family: 'IM Fell English SC';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/im-fell-english-sc.woff2') format('woff2');
}

:root {
  --paper: #eadfc4;
  --paper-light: #f3ead3;
  --paper-dark: #ddcfa9;
  --ink: #2f2519;
  --ink-soft: #5e4f3b;
  --sepia: #7a6445;
  --rule: #8a7753;
  --rouge: #8e2b26;
  --bleu: #2c4268;
  --shadow: 0 10px 28px rgba(60, 40, 15, 0.28);
  --font-body: 'Old Standard TT', 'Georgia', 'Times New Roman', serif;
  --font-title: 'IM Fell English SC', 'Old Standard TT', 'Georgia', serif;
  --noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 .35 0 0 0 0 .25 0 0 0 0 .1 0 0 0 .22 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--paper);
  background-image:
    radial-gradient(ellipse at 50% 40%, transparent 50%, rgba(92, 58, 22, 0.3) 100%),
    var(--noise);
  background-attachment: fixed, scroll;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.55;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3 {
  font-family: var(--font-title);
  font-weight: 400;
  letter-spacing: 0.04em;
}

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

/* Ornamental rule: two hairlines with a lozenge between them */
.ornament {
  position: relative;
  width: min(320px, 70%);
  height: 12px;
  margin: 0.9rem auto;
  color: var(--rule);
  background:
    linear-gradient(currentColor, currentColor) left center / calc(50% - 14px) 1px no-repeat,
    linear-gradient(currentColor, currentColor) right center / calc(50% - 14px) 1px no-repeat;
}

.ornament::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border: 1px solid currentColor;
  transform: translate(-50%, -50%) rotate(45deg);
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.5rem 0.8rem;
  background: var(--paper-light);
  background-image: var(--noise);
  border-bottom: 3px double var(--ink);
  box-shadow: 0 3px 10px rgba(60, 40, 15, 0.18);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 5px;
  background: linear-gradient(90deg, var(--bleu) 0 33.3%, var(--paper-light) 33.3% 66.6%, var(--rouge) 66.6% 100%);
  border-bottom: 1px solid var(--ink);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--ink);
}

.cockade {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  background: radial-gradient(circle, var(--bleu) 0 28%, var(--paper-light) 29% 58%, var(--rouge) 59%);
  flex: none;
}

.brand-title {
  font-family: var(--font-title);
  font-size: 1.4rem;
  letter-spacing: 0.06em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lang-switch {
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  border-radius: 2px;
  padding: 0.3rem 0.7rem;
  font-family: var(--font-title);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.lang-switch:hover {
  background: var(--paper-dark);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 36px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: transparent;
  cursor: pointer;
  padding: 0 8px;
}

.menu-toggle:hover {
  background: var(--paper-dark);
}

.burger-bar {
  display: block;
  height: 2px;
  background: var(--ink);
}

/* Nav panel */
.main-nav {
  position: fixed;
  top: 0;
  right: 0;
  height: 100%;
  width: min(310px, 85vw);
  background: var(--paper-light);
  background-image: var(--noise);
  border-left: 3px double var(--ink);
  box-shadow: var(--shadow);
  padding: calc(1.5rem + env(safe-area-inset-top, 0px)) 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 30;
}

.main-nav.open {
  transform: translateX(0);
}

.nav-link {
  color: var(--ink);
  text-decoration: none;
  padding: 0.5rem 0.6rem;
  border-bottom: 1px dotted var(--rule);
  font-size: 1.05rem;
}

.nav-link:hover, .nav-link.active {
  background: var(--paper-dark);
  color: var(--rouge);
}

.nav-link.active {
  font-style: italic;
}

.nav-section-label {
  margin: 1.2rem 0 0.1rem;
  font-family: var(--font-title);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--sepia);
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(47, 37, 25, 0.5);
  z-index: 25;
}

/* Main content */
main#app {
  flex: 1;
  width: 100%;
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.2rem 1.25rem 3rem;
}

/* The stele: an arched tablet, like the pewter plaque */
.tablet {
  position: relative;
  background: var(--paper-light);
  background-image: var(--noise);
  border: 6px double var(--ink);
  border-radius: 50% 50% 6px 6px / 110px 110px 6px 6px;
  padding: 3.2rem 2.2rem 2.2rem;
  box-shadow: var(--shadow), inset 0 0 0 1px var(--rule), inset 0 0 40px rgba(122, 100, 69, 0.25);
}

.tablet-head {
  text-align: center;
}

.today-heading {
  margin: 0;
  font-size: clamp(1.15rem, 3vw, 1.6rem);
  color: var(--ink-soft);
}

.tablet-body {
  display: grid;
  grid-template-columns: minmax(230px, 290px) 46px 1fr;
  gap: 1.5rem;
  align-items: center;
  margin-top: 0.6rem;
}

/* Engraved plate: thin-lined frame around the picture and a caption below */
.plate {
  margin: 0;
  text-align: center;
}

.plate-frame {
  padding: 6px;
  border: 1px solid var(--ink);
  background: var(--paper-light);
  box-shadow: 0 0 0 4px var(--paper-light), 0 0 0 5px var(--ink), 2px 4px 14px rgba(60, 40, 15, 0.3);
}

.plate-frame img {
  display: block;
  width: 100%;
  height: auto;
  filter: sepia(0.28) contrast(1.03);
}

.plate figcaption {
  margin-top: 1.1rem;
}

.month-name {
  margin: 0;
  font-size: 1.7rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
  font-variant: small-caps;
}

.month-period {
  margin: 0.15rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-soft);
  font-style: italic;
}

.fasces {
  width: 100%;
  height: auto;
  max-height: 460px;
  justify-self: center;
  filter: drop-shadow(1px 2px 1px rgba(60, 40, 15, 0.3));
}

.decree {
  text-align: center;
}

.date-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.2rem;
}

.decade-day {
  margin: 0;
  font-family: var(--font-title);
  font-size: 1.15rem;
  letter-spacing: 0.25em;
  color: var(--rouge);
}

.republican-date {
  font-family: var(--font-title);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: 0.04em;
  margin: 0.1rem 0;
}

.republican-year {
  font-family: var(--font-title);
  font-size: 1.3rem;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
  margin: 0;
}

/* Rubber-stamp look */
.sextile-badge {
  display: inline-block;
  margin-top: 0.6rem;
  color: var(--rouge);
  border: 2px solid var(--rouge);
  outline: 1px solid var(--rouge);
  outline-offset: 2px;
  padding: 0.1rem 0.8rem;
  font-family: var(--font-title);
  font-size: 0.95rem;
  letter-spacing: 0.15em;
  transform: rotate(-3deg);
  opacity: 0.85;
}

.gregorian-equivalent {
  margin: 0.8rem 0 0;
  font-size: 0.95rem;
  font-style: italic;
  color: var(--ink-soft);
}

.description-panel {
  max-width: 34rem;
  margin: 0 auto;
}

.month-season-suffix {
  font-family: var(--font-title);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  color: var(--sepia);
  margin: 0 0 0.6rem;
}

.month-etymology {
  font-style: italic;
  color: var(--ink-soft);
  margin: 0 0 0.6rem;
}

.month-description {
  margin: 0;
  text-align: justify;
  hyphens: auto;
}

.month-description::first-letter {
  font-family: var(--font-title);
  font-size: 1.9em;
  line-height: 1;
  color: var(--rouge);
}

/* Form: a small printed notice */
.convert-form {
  margin-top: 2.2rem;
  background: var(--paper-dark);
  background-image: var(--noise);
  border: 1px solid var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: -5px;
  padding: 1.6rem;
  box-shadow: 0 4px 12px rgba(60, 40, 15, 0.2);
}

.convert-form h2 {
  margin-top: 0;
  font-size: 1.3rem;
  text-align: center;
}

.convert-form label {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.4rem;
  color: var(--ink-soft);
  font-style: italic;
}

.convert-form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.convert-form-row input[type="date"] {
  font-family: inherit;
  font-size: 1rem;
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--ink);
  border-radius: 0;
  background: var(--paper-light);
  color: var(--ink);
}

.convert-form-row button {
  font-family: var(--font-title);
  font-size: 1.05rem;
  letter-spacing: 0.08em;
  padding: 0.45rem 1.1rem;
  border-radius: 0;
  border: 1px solid var(--ink);
  background: var(--rouge);
  color: var(--paper-light);
  cursor: pointer;
}

.convert-form-row button.secondary {
  background: transparent;
  color: var(--ink);
}

.convert-form-row button:hover {
  filter: brightness(1.12);
}

.form-help {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  font-style: italic;
  color: var(--ink-soft);
}

.form-error {
  margin: 0.75rem 0 0;
  font-size: 0.95rem;
  color: var(--rouge);
  font-weight: 700;
}

/* Full calendar: a printed poster */
#view-calendar {
  margin: 0 -0.5rem;
}

.poster {
  background: var(--paper-light);
  background-image: var(--noise);
  border: 6px double var(--ink);
  padding: 1.8rem 1.4rem 1.6rem;
  box-shadow: var(--shadow), inset 0 0 0 1px var(--rule), inset 0 0 50px rgba(122, 100, 69, 0.22);
}

.poster-head {
  text-align: center;
}

.poster-head h1 {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 2.3rem);
}

.poster-subtitle {
  margin: 0.2rem 0 0;
  font-style: italic;
  color: var(--ink-soft);
}

.poster-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.8rem 1.2rem;
  margin-top: 0.6rem;
}

.season,
.poster-center {
  min-width: 0;
}

.arch {
  height: 110px;
  border: 2px solid var(--ink);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  overflow: hidden;
  background: var(--paper-dark);
  box-shadow: inset 0 0 0 3px var(--paper-light), inset 0 0 0 4px var(--ink);
}

.arch img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 18%;
  filter: grayscale(1) sepia(0.55) contrast(1.15) brightness(1.05);
  mix-blend-mode: multiply;
}

.season-title {
  margin: 0.5rem 0 0.3rem;
  text-align: center;
  font-size: 1.5rem;
  letter-spacing: 0.18em;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.2rem;
}

.season-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 0.8rem;
  line-height: 1.25;
}

.season-table th,
.season-table td {
  padding: 0.12rem 0.25rem;
  text-align: left;
  vertical-align: baseline;
  overflow-wrap: anywhere;
  border-bottom: 1px dotted rgba(138, 119, 83, 0.6);
}

.season-table thead th {
  font-weight: 400;
  text-align: center;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 0.3rem;
}

.season-table col.col-day {
  width: 4.4em;
}

.season-table abbr {
  margin-left: 0.2em;
  text-decoration: none;
}

.season-table thead th {
  overflow-wrap: normal;
}

.day-head {
  font-family: var(--font-title);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.month-button {
  font-family: var(--font-title);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--ink);
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  border-bottom: 1px dotted var(--rouge);
}

.month-button:hover,
.month-button:focus-visible {
  color: var(--rouge);
}

.season-table tbody th {
  font-weight: 400;
  color: var(--ink-soft);
  white-space: nowrap;
}

.season-table .day-number {
  display: inline-block;
  min-width: 1.4em;
  text-align: right;
  margin-right: 0.15em;
  font-weight: 700;
  color: var(--ink);
}

.season-table .decade-row th {
  padding: 0.35rem 0.25rem 0.1rem;
  font-family: var(--font-title);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-align: center;
  color: var(--sepia);
  border-bottom: 1px solid var(--rule);
}

.season-table .decade-end th,
.season-table .decade-end td {
  background: rgba(122, 100, 69, 0.1);
}

.season-table td.today,
.season-table th.today-row,
.season-table th.today-row .day-number {
  background: var(--rouge);
  color: var(--paper-light);
  font-weight: 700;
}

.month-button.is-current {
  color: var(--rouge);
  border-bottom-style: solid;
}

.poster-center {
  text-align: center;
}

.medallion {
  width: min(190px, 70%);
  aspect-ratio: 1;
  margin: 0 auto;
  border-radius: 50%;
  border: 2px solid var(--ink);
  padding: 10px;
  background:
    repeating-conic-gradient(var(--ink) 0 0.6deg, transparent 0.6deg 6deg) center / 100% 100% no-repeat,
    var(--paper-dark);
  box-shadow: inset 0 0 0 2px var(--paper-light), inset 0 0 0 3px var(--ink);
}

.medallion-inner {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 1px solid var(--ink);
  background: var(--paper-light);
}

.medallion-inner img {
  position: absolute;
  top: 9%;
  left: 50%;
  height: 82%;
  width: auto;
  transform: translateX(-50%);
}

.explanation {
  margin: 1.1rem 0 0;
  text-align: left;
  font-size: 0.88rem;
  line-height: 1.45;
}

.explanation h2 {
  margin: 0 0 0.4rem;
  font-size: 1.3rem;
  text-align: center;
  letter-spacing: 0.2em;
}

.explanation p {
  margin: 0 0 0.6rem;
  text-align: justify;
  hyphens: auto;
}

.poster-feasts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.6rem;
  margin-top: 1.8rem;
  padding-top: 1rem;
  border-top: 3px double var(--ink);
}

.feast {
  text-align: center;
  padding: 0.5rem 0.4rem;
  border: 1px solid var(--ink);
  outline: 1px solid var(--rule);
  outline-offset: -4px;
  background: var(--paper-dark);
  font-size: 0.9rem;
  line-height: 1.3;
}

.feast-day {
  display: block;
  font-family: var(--font-title);
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--ink-soft);
}

.feast-name {
  display: block;
}

.feast-note {
  display: block;
  font-size: 0.78rem;
  font-style: italic;
  color: var(--ink-soft);
}

.feast.today {
  background: var(--rouge);
  color: var(--paper-light);
}

.feast.today .feast-day,
.feast.today .feast-note {
  color: var(--paper-light);
}

/* Month dialog */
.month-dialog {
  width: min(560px, calc(100vw - 2rem));
  max-height: calc(100vh - 2rem);
  overflow: auto;
  padding: 1.6rem 1.6rem 1.4rem;
  color: var(--ink);
  background: var(--paper-light);
  background-image: var(--noise);
  border: 6px double var(--ink);
  box-shadow: var(--shadow);
}

.month-dialog::backdrop {
  background: rgba(47, 37, 25, 0.6);
}

.month-dialog .plate {
  max-width: 280px;
  margin: 0 auto;
}

.dialog-close {
  position: absolute;
  top: 0.4rem;
  right: 0.6rem;
  background: none;
  border: none;
  font-size: 1.8rem;
  line-height: 1;
  color: var(--ink);
  cursor: pointer;
}

.dialog-close:hover {
  color: var(--rouge);
}

.dialog-text {
  margin-top: 1rem;
  text-align: center;
}

/* About view */
.about-view {
  background: var(--paper-light);
  background-image: var(--noise);
  border: 6px double var(--ink);
  padding: 2rem 2.2rem;
  box-shadow: var(--shadow), inset 0 0 0 1px var(--rule), inset 0 0 40px rgba(122, 100, 69, 0.2);
}

.about-view h1 {
  margin-top: 0;
  text-align: center;
  font-size: clamp(1.4rem, 4vw, 2rem);
  padding-bottom: 0.6rem;
  border-bottom: 3px double var(--ink);
}

.about-content h2 {
  font-size: 1.3rem;
  color: var(--rouge);
  margin: 1.6rem 0 0.5rem;
}

.about-content h2:first-child {
  margin-top: 0;
}

.about-content p {
  margin: 0 0 0.8rem;
  text-align: justify;
  hyphens: auto;
}

/* Footer */
.site-footer {
  text-align: center;
  padding: 0.5rem 1rem calc(1.5rem + env(safe-area-inset-bottom, 0px));
  font-size: 0.9rem;
  font-style: italic;
  color: var(--ink-soft);
}

.site-footer p {
  margin: 0 auto;
  max-width: 44rem;
}

/* Responsive */
@media (min-width: 820px) {
  .poster-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .poster-center {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 190px 1fr;
    gap: 1.5rem;
    align-items: center;
    text-align: left;
    order: -1;
  }

  .poster-center .medallion {
    width: 190px;
  }

  .poster-center .explanation {
    margin: 0;
  }
}

/* Five columns like the original poster: autumn, winter, key, spring, summer */
@media (min-width: 1420px) {
  main#app:has(#view-calendar:not([hidden])) {
    max-width: 1640px;
  }

  .poster-grid {
    grid-template-columns: 1.25fr 1.25fr 0.95fr 1.25fr 1.25fr;
  }

  .poster-center {
    display: block;
    order: 0;
    grid-row: 1;
    grid-column: 3;
  }

  .poster-center .medallion {
    width: min(190px, 70%);
  }

  .poster-center .explanation {
    margin-top: 1.1rem;
  }

  .season-table {
    font-size: 0.72rem;
  }

  .season-table .month-button {
    font-size: 0.78rem;
    letter-spacing: 0;
  }
}

@media (max-width: 819px) {
  .tablet {
    border-radius: 50% 50% 6px 6px / 70px 70px 6px 6px;
    padding: 2.4rem 1.3rem 1.6rem;
  }

  .tablet-body {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .plate {
    max-width: 280px;
    margin: 0 auto;
  }

  .fasces {
    display: none;
  }

  .about-view {
    padding: 1.4rem 1.2rem;
  }
}

@media (max-width: 480px) {
  .site-header {
    padding: 0.9rem 1rem 0.7rem;
  }

  .brand-title {
    font-size: 1.15rem;
  }

  main#app {
    padding: 1.4rem 0.8rem 2rem;
  }

  .tablet {
    border-width: 4px;
    border-radius: 50% 50% 4px 4px / 48px 48px 4px 4px;
    padding: 1.8rem 1rem 1.3rem;
  }

  .convert-form {
    padding: 1.2rem;
  }

  .poster {
    padding: 1.2rem 0.6rem;
    border-width: 4px;
  }

  #view-calendar {
    margin: 0 -0.4rem;
  }

  .season-table {
    font-size: 0.72rem;
  }
}