/*
 * Codex Theme
 * The book as interface. Tufte, Bringhurst, and the long tradition
 * of typographic craft applied to the screen.
 * Warm, readable, unhurried. Content is sovereign.
 */

/* ---- Color System ---- */
:root {
  --bg-color: #faf8f4;
  --text-color: #2c2c2c;
  --sidebar-bg: #f0ece4;
  --link-color: #8b4513;
  --border-color: #d4cfc6;
  --accent-color: #8b4513;

  --codex-paper: #faf8f4;
  --codex-ink: #2c2c2c;
  --codex-sienna: #8b4513;
  --codex-muted: #8a8478;
  --codex-rule: #d4cfc6;

  color-scheme: light;
}

/* Dark mode adaptation -- parchment by candlelight */
.theme-dark {
  --bg-color: #1c1a17;
  --text-color: #d4cfc6;
  --sidebar-bg: #23211d;
  --link-color: #c9956b;
  --border-color: #3a3630;
  --accent-color: #c9956b;

  --codex-paper: #1c1a17;
  --codex-ink: #d4cfc6;
  --codex-sienna: #c9956b;
  --codex-muted: #8a8478;
  --codex-rule: #3a3630;
}

/* ---- Typography ---- */

body {
  font-family: 'Iowan Old Style', 'Palatino Linotype', Palatino, 'Book Antiqua', 'Crimson Text', Georgia, serif;
  font-size: 19px;
  line-height: 1.7;
  letter-spacing: 0.005em;
  background-color: var(--bg-color);
  color: var(--text-color);
  -webkit-font-smoothing: antialiased;
  /* text-rendering: optimizeLegibility triggers expensive kerning/ligature
     computation on all text. On mobile with long feed content this causes
     significant layout slowdowns during scroll. The default 'auto' lets
     the browser optimize per-element. font-feature-settings similarly
     forces the shaper to run on every glyph. Removed for performance. */
}

/* ---- Sidebar: Table of Contents ---- */

.sidebar {
  background: var(--sidebar-bg);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-right: 1px solid var(--codex-rule);
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
}

.theme-dark .sidebar {
  background: var(--sidebar-bg);
  border-right-color: var(--codex-rule);
}

.sidebar-section h3 {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
  font-size: 0.7rem;
  font-weight: 400;
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.15em;
  color: var(--codex-muted);
  opacity: 1;
}

.theme-dark .sidebar-section h3 {
  color: var(--codex-muted);
}

.sidebar-section li a {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
  color: var(--text-color);
  font-size: 0.85rem;
  border-radius: 3px;
  font-weight: 400;
}

.theme-dark .sidebar-section li a {
  color: var(--text-color);
}

.sidebar-section li a:hover {
  background: rgba(139, 69, 19, 0.06);
  color: var(--codex-sienna);
  transform: none;
}

.theme-dark .sidebar-section li a:hover {
  background: rgba(201, 149, 107, 0.08);
  color: var(--codex-sienna);
}

.sidebar-section li.active a {
  background: rgba(139, 69, 19, 0.08);
  color: var(--codex-sienna);
  box-shadow: none;
  border: none;
  border-radius: 3px;
  font-weight: 600;
}

.theme-dark .sidebar-section li.active a {
  background: rgba(201, 149, 107, 0.1);
  color: var(--codex-sienna);
}

.sidebar-footer {
  border-top-color: var(--codex-rule);
}

.sidebar-footer a {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
  color: var(--text-color);
  opacity: 0.5;
  font-size: 0.85rem;
}

.theme-dark .sidebar-footer a {
  color: var(--text-color);
}

/* Search */
.sidebar-search input {
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--codex-rule);
  border-radius: 3px;
  color: var(--text-color);
  font-family: inherit;
}

.theme-dark .sidebar-search input {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-color);
  border-color: var(--codex-rule);
}

.sidebar-search input:focus {
  border-color: var(--codex-sienna);
  box-shadow: none;
}

/* ---- Toggle ---- */
.theme-dark .sidebar-toggle {
  background: none;
}

/* ---- Main Content ---- */

.main-content {
  background-color: var(--bg-color);
  padding: 2.5rem 2rem;
}

.main-content > * {
  max-width: 33em;
}

/* ---- Feed Items: The Reading Experience ---- */

.feed-item {
  padding: 0;
  margin-top: 2.5rem;
  border-radius: 0;
  padding-bottom: 2.5rem;
  border-bottom: none;
}

/* Decorative separator between items -- a subtle fleuron */
.feed-item + .feed-item::before {
  content: '\2766';
  display: block;
  text-align: center;
  font-size: 1rem;
  color: var(--codex-rule);
  margin-bottom: 2.5rem;
  margin-top: -2.5rem;
}

.feed-item.selected {
  background: none;
  box-shadow: inset 3px 0 0 var(--codex-sienna);
  padding-left: 1rem;
  border-radius: 0;
}

.theme-dark .feed-item.selected {
  background: none;
}

.item-title {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
  font-size: 1.65rem;
  line-height: 1.3;
  font-weight: 400;
  color: var(--codex-sienna);
  letter-spacing: -0.005em;
}

.item-title:hover {
  color: var(--codex-ink);
  text-decoration: none;
}

.dateline {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
  font-variant: small-caps;
  text-transform: lowercase;
  font-size: 0.78em;
  letter-spacing: 0.06em;
  color: var(--codex-muted);
  margin-bottom: 1.2rem;
}

.dateline a {
  color: var(--codex-muted);
}

.item-description {
  font-family: 'Iowan Old Style', 'Palatino Linotype', Palatino, 'Book Antiqua', Georgia, serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-color);
  /* hyphens: auto removed -- requires dictionary lookups during layout for
     every line break, expensive with long feed content during scroll. */
}

.item-description a {
  color: var(--codex-sienna);
  text-decoration: none;
  border-bottom: 1px solid rgba(139, 69, 19, 0.3);
}

.item-description a:hover {
  border-bottom-color: var(--codex-sienna);
}

.item-description blockquote {
  border-left: 3px solid var(--codex-rule);
  margin-left: 0;
  padding-left: 1.5em;
  font-style: italic;
  color: var(--codex-muted);
}

.item-description pre {
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--codex-rule);
  border-radius: 2px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.88em;
}

.item-description img {
  border-radius: 2px;
}

/* Star */
.star-btn.is-starred {
  color: var(--codex-sienna);
}

.star-btn.is-unstarred {
  color: var(--codex-muted);
  opacity: 0.25;
}

/* Scrape */
.scrape-btn {
  font-family: inherit;
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  color: var(--codex-sienna);
  border-color: var(--codex-rule);
  background: transparent;
  border-radius: 2px;
  font-weight: 400;
}

/* ---- Buttons ---- */

button,
.button {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.06em;
  border-radius: 3px;
  border-color: var(--codex-rule);
  background: transparent;
  color: var(--text-color);
  font-size: 0.85rem;
  font-weight: 400;
}

button:hover,
.button:hover {
  border-color: var(--codex-sienna);
  color: var(--codex-sienna);
  background: rgba(139, 69, 19, 0.04);
}

.theme-dark button,
.theme-dark .button {
  background: transparent;
  color: var(--text-color);
  border-color: var(--codex-rule);
}

.theme-dark button:hover,
.theme-dark .button:hover {
  border-color: var(--codex-sienna);
  color: var(--codex-sienna);
  background: rgba(201, 149, 107, 0.08);
}

button.active,
.theme-dark button.active {
  background: var(--codex-sienna);
  color: var(--codex-paper);
  border-color: var(--codex-sienna);
}

/* ---- Settings ---- */

.settings-view {
  font-family: 'Iowan Old Style', Palatino, Georgia, serif;
}

.settings-view h2 {
  font-weight: 400;
  font-size: 1.8rem;
  letter-spacing: -0.01em;
}

.settings-section h3 {
  font-family: inherit;
  font-weight: 400;
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.08em;
  font-size: 1.15rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--codex-rule);
}

.settings-group label,
.data-group label {
  font-family: inherit;
  font-variant: small-caps;
  text-transform: lowercase;
  letter-spacing: 0.1em;
  font-size: 0.85rem;
  font-weight: 400;
  opacity: 0.65;
}

.theme-dark .settings-view,
.theme-dark .settings-view h2,
.theme-dark .settings-view h3,
.theme-dark .settings-group label,
.theme-dark .data-group label {
  color: var(--text-color) !important;
}

/* Inputs */
input[type="text"],
input[type="url"],
input[type="search"],
select {
  font-family: inherit;
  background: transparent;
  border: 1px solid var(--codex-rule);
  border-radius: 3px;
  color: var(--text-color);
}

input:focus,
select:focus {
  border-color: var(--codex-sienna);
  box-shadow: none;
}

/* Feed list */
.manage-feed-list {
  border-top-color: var(--codex-rule);
}

.manage-feed-item {
  border-bottom-color: var(--codex-rule);
}

.feed-title {
  font-family: inherit;
  font-weight: 600;
}

.feed-url {
  font-family: inherit;
}

.delete-feed-btn {
  color: #a0522d !important;
  border-color: rgba(160, 82, 45, 0.3) !important;
}

.delete-feed-btn:hover {
  background: rgba(160, 82, 45, 0.06) !important;
  border-color: #a0522d !important;
}

/* ---- Scrollbars ---- */

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--codex-rule);
  border-radius: 3px;
}

/* ---- Backdrop ---- */
.sidebar-backdrop {
  background: rgba(250, 248, 244, 0.6);
  backdrop-filter: blur(3px);
}

.theme-dark .sidebar-backdrop {
  background: rgba(28, 26, 23, 0.6);
}