/* Variables & Theme */
:root {
  --bg-color: #faf9f6;
  --text-color: #2d3748;
  --text-light: #718096;
  --accent-color: #4a5568;
  /* Slate Neutral */
  --accent-hover: #2d3748;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --font-serif: "Libre Baskerville", serif;
  --font-sans: "Inter", sans-serif;
  --max-width: 700px;
  --spacing-unit: 1rem;
}

[data-theme="dark"] {
  --bg-color: #1a202c;
  --text-color: #e2e8f0;
  --text-light: #a0aec0;
  --accent-color: #cbd5e0;
  --accent-hover: #edf2f7;
  --card-bg: #2d3748;
  --border-color: #4a5568;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-color: #1a202c;
    --text-color: #e2e8f0;
    --text-light: #a0aec0;
    --accent-color: #cbd5e0;
    --accent-hover: #edf2f7;
    --card-bg: #2d3748;
    --border-color: #4a5568;
  }
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

main {
  padding-bottom: 4rem;
}

/* Navigation */
.site-header {
  padding: 1rem 3.5rem 1rem 1rem;
  text-align: center;
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.theme-toggle {
  position: absolute;
  right: 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.25rem;
  color: var(--text-light);
  padding: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s;
}

.theme-toggle:hover {
  background-color: var(--bg-color);
  color: var(--text-color);
}

.site-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.site-title a:hover {
  color: var(--text-light);
}

@media (max-width: 480px) {
  .site-title {
    font-size: 1.15rem;
  }
}

/* Search Input */
.search-container {
  margin-bottom: 2rem;
}

.search-input {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-color);
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.1);
}

/* Hymn List */
.hymn-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-bottom: 2rem;
}

.hymn-item {
  background-color: var(--card-bg);
  padding: 1rem 1.25rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  border: 1px solid transparent;
}

.hymn-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
  border-color: var(--border-color);
}

.hymn-number {
  font-family: var(--font-sans);
  font-weight: 600;
  color: var(--text-light);
  font-size: 0.9rem;
  min-width: 2rem;
}

.hymn-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-color);
}

/* Single Hymn View */
.hymn-article {
  margin-top: 1rem;
}

.hymn-header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.hymn-meta {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-light);
  margin-bottom: 0.5rem;
  display: block;
}

.hymn-main-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.hymn-subtitle {
  font-size: 1rem;
  color: var(--text-light);
  font-style: italic;
  font-family: var(--font-serif);
}

.hymn-content {
  font-size: 1.25rem;
  line-height: 1.5;
  white-space: normal;
  text-align: center;
  /* Poetry style */
  color: var(--text-color);
}

/* Specific Hymn Styling */
.hymn-content p {
  margin-bottom: 1.5rem;
}

/* Coro / Chorus Styling */
/* Assuming markdown uses > blockquote or italics for chorus,
   or we'll wrap it in a class if we can control markdown generation better.
   For now, we'll style probable chorus indicators if present in update.
   Or rely on .coro class if we inject it. */
.coro {
  font-style: italic;
  color: var(--accent-color);
  margin: 2rem 0;
  display: block;
}

/* Footer / Navigation Buttons */
.hymn-nav {
  margin-top: 2rem;
  padding-top: 0;
  border-top: none;
  text-align: center;
  margin-bottom: 2rem;
}

.font-controls {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn-font {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 0.5rem 1rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 600;
  /* Bold text for labels */
  font-size: 0.9rem;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  /* Minimum width for touch targets */
}

.btn-font:hover {
  background-color: var(--bg-color);
  /* Slight background change */
  border-color: var(--accent-color);
  color: var(--accent-color);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-font:active {
  transform: translateY(0);
  box-shadow: none;
  background-color: var(--border-color);
}

.btn-back {
  display: inline-block;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  color: var(--text-light);
  border: 1px solid var(--border-color);
  border-radius: 4px;
}

.btn-back:hover {
  background-color: var(--card-bg);
  color: var(--text-color);
}

/* Hymn Footer / Metadata */
.hymn-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px dotted var(--border-color);
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-light);
}

.hymn-metadata p {
  margin-bottom: 0.25rem;
}

.hymn-metadata strong {
  color: var(--text-color);
  font-weight: 600;
}