/*
 * Kanteletar Public Library — Folkloric Design
 *
 * Aesthetic: warm, organic, literary, woodsy. Evokes the Finnish forest,
 * the oral tradition, handwritten manuscripts, the smell of old paper.
 *
 * Color palette:
 *   --forest-deep   #1a2e1a   very dark forest green (headings, text)
 *   --forest-mid    #2d4a2d   forest green
 *   --bark          #5c3d1e   warm dark brown
 *   --amber         #c07a28   amber / beaten-copper gold
 *   --birch         #f5efe0   birch-bark cream (primary background)
 *   --parchment     #ede3cc   warmer parchment (card backgrounds)
 *   --sage          #8aaa7a   muted sage green (accents)
 *   --charcoal      #2c2c2c   near-black text
 */

/* ── Custom properties ──────────────────────────────────────────────────── */
:root {
  --forest-deep:  #1a2e1a;
  --forest-mid:   #2d4a2d;
  --bark:         #5c3d1e;
  --amber:        #c07a28;
  --amber-light:  #d4943e;
  --birch:        #f5efe0;
  --parchment:    #ede3cc;
  --parchment-dark: #d9cba8;
  --sage:         #8aaa7a;
  --sage-dark:    #5a7a50;
  --charcoal:     #2c2c2c;
  --text-muted:   #6b5a45;

  --font-serif:   Georgia, "Palatino Linotype", Palatino, "Book Antiqua", serif;
  --font-sans:    system-ui, -apple-system, sans-serif;
  --font-mono:    "Courier New", Courier, monospace;

  --radius-sm:    4px;
  --radius-md:    8px;
  --radius-lg:    16px;

  --shadow-sm:    0 1px 3px rgba(26,46,26,0.12);
  --shadow-md:    0 4px 12px rgba(26,46,26,0.15);
  --shadow-lg:    0 8px 24px rgba(26,46,26,0.18);

  --max-width:    860px;
  --wide-width:   1140px;
}

/* ── Reset & base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: var(--font-serif);
  background-color: var(--birch);
  color: var(--charcoal);
  line-height: 1.75;
  min-height: 100vh;
}

/* ── Typography ─────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-serif);
  color: var(--forest-deep);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: 2.4rem; margin-bottom: 0.6rem; }
h2 { font-size: 1.75rem; margin-bottom: 0.5rem; }
h3 { font-size: 1.3rem; margin-bottom: 0.4rem; }
h4 { font-size: 1.1rem; margin-bottom: 0.3rem; }

p { margin-bottom: 1em; }
p:last-child { margin-bottom: 0; }

a {
  color: var(--bark);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-underline-offset: 3px;
  transition: color 0.15s, text-decoration-color 0.15s;
}
a:hover { color: var(--amber); text-decoration-color: var(--bark); }

em { font-style: italic; }
strong { font-weight: bold; color: var(--forest-deep); }

blockquote {
  border-left: 3px solid var(--amber);
  padding-left: 1.2em;
  margin: 1.5em 0;
  color: var(--text-muted);
  font-style: italic;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.container-wide {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Site header ────────────────────────────────────────────────────────── */
.site-header {
  background: var(--forest-deep);
  border-bottom: 3px solid var(--amber);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .header-inner {
  max-width: var(--wide-width);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: bold;
  color: var(--parchment) !important;
  text-decoration: none !important;
  letter-spacing: 0.02em;
}
.site-logo .logo-sub {
  font-size: 0.72rem;
  font-weight: normal;
  color: var(--sage);
  display: block;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 1.8rem;
  align-items: center;
}
.site-nav a {
  color: var(--parchment);
  text-decoration: none;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  opacity: 0.85;
  transition: opacity 0.15s, color 0.15s;
}
.site-nav a:hover { opacity: 1; color: var(--amber-light); }
.site-nav a.active { opacity: 1; color: var(--amber-light); border-bottom: 2px solid var(--amber); }

/* ── Site footer ────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--forest-deep);
  color: var(--parchment);
  padding: 2.5rem 1.5rem;
  margin-top: 4rem;
  text-align: center;
  font-size: 0.875rem;
  opacity: 0.9;
}
.site-footer a { color: var(--sage); }
.site-footer .footer-note {
  margin-top: 0.8rem;
  color: var(--parchment-dark);
  font-style: italic;
  font-size: 0.82rem;
}

/* ── Hero section ───────────────────────────────────────────────────────── */
.hero {
  padding: 5rem 1.5rem 3.5rem;
  text-align: center;
  background: linear-gradient(160deg, var(--forest-deep) 0%, var(--forest-mid) 100%);
  color: var(--birch);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero h1 {
  color: var(--parchment);
  font-size: 3rem;
  letter-spacing: 0.02em;
  position: relative;
}
.hero .hero-subtitle {
  color: var(--sage);
  font-size: 1.1rem;
  margin-top: 0.8rem;
  font-style: italic;
  position: relative;
}
.hero .hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 2.5rem;
  position: relative;
}
.hero-stat { text-align: center; }
.hero-stat .stat-number {
  display: block;
  font-size: 2.2rem;
  color: var(--amber-light);
  font-family: var(--font-serif);
}
.hero-stat .stat-label {
  font-size: 0.8rem;
  color: var(--parchment-dark);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ── Decorative divider ─────────────────────────────────────────────────── */
.ornament {
  text-align: center;
  color: var(--amber);
  font-size: 1.3rem;
  margin: 2rem 0;
  letter-spacing: 0.5em;
}
.ornament::before { content: "✦ "; }
.ornament::after  { content: " ✦"; }

/* ── Page main content area ─────────────────────────────────────────────── */
.page-main {
  padding: 3rem 0 4rem;
}

.page-header {
  padding: 2.5rem 0 1.5rem;
  border-bottom: 1px solid var(--parchment-dark);
  margin-bottom: 2.5rem;
}
.page-header h1 { margin-bottom: 0.3rem; }
.page-header .page-subtitle {
  color: var(--text-muted);
  font-style: italic;
  font-size: 1rem;
}

/* ── Poem cards (browse list) ───────────────────────────────────────────── */
.book-section { margin-bottom: 3rem; }
.book-section h2 {
  font-size: 1.3rem;
  color: var(--forest-mid);
  padding-bottom: 0.6rem;
  border-bottom: 2px solid var(--amber);
  margin-bottom: 1.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.poem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
}

.poem-card {
  background: var(--parchment);
  border: 1px solid var(--parchment-dark);
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: box-shadow 0.2s, transform 0.15s, border-color 0.2s;
  box-shadow: var(--shadow-sm);
}
.poem-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--amber);
  text-decoration: none;
  color: inherit;
}
.poem-card .poem-ref {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.4rem;
}
.poem-card h3 {
  font-size: 1.05rem;
  color: var(--forest-deep);
  margin-bottom: 0.5rem;
}
.poem-card .poem-preview {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-style: italic;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.poem-card .badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 7px;
  border-radius: 20px;
  margin-top: 0.6rem;
  background: var(--sage);
  color: white;
  letter-spacing: 0.04em;
}

/* ── Poem reading view ──────────────────────────────────────────────────── */
.poem-page { padding: 2.5rem 0; }

.poem-header {
  text-align: center;
  padding: 2rem 0;
  border-bottom: 1px solid var(--parchment-dark);
  margin-bottom: 2.5rem;
}
.poem-header .poem-ref-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}
.poem-header h1 { font-size: 2rem; }
.poem-header .book-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-style: italic;
  margin-top: 0.4rem;
}

/* Parallel text layout: Finnish left, English right */
.poem-parallel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  margin: 2rem 0;
}
@media (max-width: 700px) {
  .poem-parallel { grid-template-columns: 1fr; }
}

.poem-column {}
.poem-column-header {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--parchment-dark);
}

.poem-text {
  font-family: var(--font-serif);
  font-size: 1.0rem;
  line-height: 2;
  color: var(--charcoal);
  white-space: pre-line;
}
.poem-text-fi {
  font-size: 1.0rem;
  white-space: pre-line;
  line-height: 2;
  color: var(--forest-deep);
}

/* Linked vocabulary words in Finnish text */
.vocab-word {
  cursor: pointer;
  border-bottom: 1px dotted var(--amber);
  color: var(--bark);
  transition: color 0.15s;
}
.vocab-word:hover { color: var(--amber); border-bottom-color: var(--bark); }

/* ── Dictionary popover ─────────────────────────────────────────────────── */
.vocab-popover {
  background: var(--forest-deep);
  color: var(--parchment);
  border-radius: var(--radius-md);
  padding: 1rem 1.2rem;
  font-size: 0.88rem;
  line-height: 1.6;
  box-shadow: var(--shadow-lg);
  max-width: 340px;
}
.vocab-popover .popover-headword {
  font-size: 1.05rem;
  color: var(--amber-light);
  font-style: italic;
  margin-bottom: 0.3rem;
}
.vocab-popover .popover-gloss { color: var(--birch); }
.vocab-popover .popover-link {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.78rem;
  color: var(--sage);
  text-decoration: underline;
}

/* ── Translation layer tabs ─────────────────────────────────────────────── */
.translation-layers { margin-top: 3rem; }
.translation-layers h2 {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.2rem;
}

.layer-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--parchment-dark);
  margin-bottom: 1.5rem;
}
.layer-tab {
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  border: 1px solid var(--parchment-dark);
  border-bottom: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  background: var(--birch);
  color: var(--text-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.layer-tab.active, [x-data] .layer-tab:focus {
  background: var(--parchment);
  color: var(--forest-deep);
  border-color: var(--parchment-dark);
  border-bottom: 2px solid var(--parchment);
  margin-bottom: -2px;
}

.layer-panel { display: none; }
.layer-panel.active { display: block; }

/* AI transparency note */
.ai-note {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-style: italic;
  padding: 0.6rem 0.8rem;
  background: var(--parchment);
  border-left: 3px solid var(--sage);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-top: 1rem;
}

/* Uncertainty flags */
.uncertainty-list {
  margin-top: 1rem;
  padding: 0;
  list-style: none;
}
.uncertainty-item {
  font-size: 0.85rem;
  padding: 0.5rem 0.8rem;
  background: var(--parchment);
  border-left: 3px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin-bottom: 0.5rem;
}
.uncertainty-item .u-word {
  font-style: italic;
  color: var(--bark);
  font-weight: bold;
}
.uncertainty-item.severity-significant { border-color: #c0392b; }
.uncertainty-item.severity-minor { border-color: var(--sage); }

/* ── Dictionary entry (public) ──────────────────────────────────────────── */
.entry-page { max-width: 720px; margin: 0 auto; padding: 3rem 0; }
.entry-headword {
  font-size: 2.8rem;
  color: var(--forest-deep);
  font-style: italic;
}
.entry-gloss {
  font-size: 1.1rem;
  color: var(--bark);
  margin: 0.5rem 0 1.5rem;
}

.entry-section {
  margin-bottom: 1.8rem;
}
.entry-section-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
  border-bottom: 1px solid var(--parchment-dark);
  padding-bottom: 0.3rem;
}
.entry-section-body {
  font-size: 0.96rem;
  color: var(--charcoal);
  line-height: 1.7;
}

.poem-appearances { margin-top: 2rem; }
.poem-appearance-link {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--parchment-dark);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin: 0.25rem;
  color: var(--bark);
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s;
  background: var(--parchment);
}
.poem-appearance-link:hover {
  background: var(--amber);
  color: white;
  border-color: var(--amber);
  text-decoration: none;
}

/* ── Dictionary browse ──────────────────────────────────────────────────── */
.dict-letter-group { margin-bottom: 2.5rem; }
.dict-letter {
  font-size: 1.6rem;
  color: var(--amber);
  border-bottom: 2px solid var(--parchment-dark);
  padding-bottom: 0.3rem;
  margin-bottom: 0.8rem;
}
.dict-entry-row {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  padding: 0.4rem 0;
  border-bottom: 1px dotted var(--parchment-dark);
  text-decoration: none;
  color: inherit;
}
.dict-entry-row:hover { background: var(--parchment); }
.dict-entry-row .dict-hw { font-style: italic; color: var(--bark); min-width: 160px; }
.dict-entry-row .dict-gloss { font-size: 0.9rem; color: var(--text-muted); }

/* ── Search ─────────────────────────────────────────────────────────────── */
.search-bar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}
.search-bar input {
  flex: 1;
  padding: 0.6rem 1rem;
  border: 1px solid var(--parchment-dark);
  border-radius: var(--radius-sm);
  background: white;
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--charcoal);
}
.search-bar input:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(192,122,40,0.15);
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.55rem 1.2rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: normal;
  cursor: pointer;
  border: none;
  transition: background 0.15s, color 0.15s, transform 0.1s;
  text-decoration: none;
}
.btn:hover { transform: translateY(-1px); text-decoration: none; }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--amber);
  color: white;
}
.btn-primary:hover { background: var(--amber-light); color: white; }

.btn-ghost {
  background: transparent;
  color: var(--bark);
  border: 1px solid var(--parchment-dark);
}
.btn-ghost:hover { background: var(--parchment); }

/* ── Poem navigation ────────────────────────────────────────────────────── */
.poem-nav {
  display: flex;
  justify-content: space-between;
  padding: 1.5rem 0;
  border-top: 1px solid var(--parchment-dark);
  margin-top: 3rem;
}
.poem-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
}
.poem-nav a:hover { color: var(--amber); }
.poem-nav .nav-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.2rem;
}

/* ── About page ─────────────────────────────────────────────────────────── */
.about-body { max-width: 640px; }
.about-body p { font-size: 1.02rem; line-height: 1.85; }

/* ── Utilities ──────────────────────────────────────────────────────────── */
.text-muted  { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
  html { font-size: 16px; }
  h1 { font-size: 1.8rem; }
  .hero h1 { font-size: 2rem; }
  .hero .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
  .site-nav { gap: 1rem; }
  .poem-parallel { grid-template-columns: 1fr; }
}