/* ─── ET Book font faces ─────────────────────────────────────────── */
@font-face {
  font-family: 'ETBook';
  src: url('/fonts/et-book-roman.woff') format('woff');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'ETBook';
  src: url('/fonts/et-book-italic.woff') format('woff');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'ETBook';
  src: url('/fonts/et-book-bold.woff') format('woff');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ─── Design tokens ──────────────────────────────────────────────── */
:root {
  --font-reading: 'ETBook', Georgia, serif;
  --font-mono: 'Courier New', monospace;
  --content-width: 600px;
  --font-size-prose: 22px;
  --text-align-prose: left;

  --color-bg: #FAF8F6;
  --color-surface: #FFFFFF;
  --color-accent: #1E40A7;
  --color-accent-hover: #162F7A;
  --color-accent-light: #E8ECF5;
  --color-text-primary: #1A1A1A;
  --color-text-secondary: #6B6B6B;
  --color-border: #E5E2DF;

  --line-height-prose: 1.30;
  --paragraph-spacing: 1.4rem;
}

/* ─── Dark mode ──────────────────────────────────────────────────── */
.dark {
  --color-bg: #171615;
  --color-surface: #1E1E1E;
  --color-accent: #5B7FD6;
  --color-accent-hover: #7B9BE0;
  --color-accent-light: #1E2A4A;
  --color-text-primary: #D6D5D4;
  --color-text-secondary: #9B9B9B;
  --color-border: #2E2E2E;
}

/* ─── Antialiasing (IM Fell English) ─────────────────────────────── */
.antialiased {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ─── Base ───────────────────────────────────────────────────────── */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  font-family: var(--font-reading);
  font-size: 22px;
  line-height: var(--line-height-prose);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-accent);
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ─── Navbar ─────────────────────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.navbar-title {
  font-family: 'IM Fell English SC', Georgia, serif;
  font-size: 22px;
  color: var(--color-accent);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.navbar-right {
  position: absolute;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.gear-btn,
.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  line-height: 1;
  padding: 0.2rem;
  display: flex;
  align-items: center;
  opacity: 0.5;
  transition: opacity 0.15s;
}

.gear-btn:hover,
.theme-toggle:hover {
  opacity: 1;
}

.gear-btn img,
.theme-toggle img {
  display: block;
}

.dark .gear-btn img,
.dark .theme-toggle img {
  filter: invert(1);
}

/* ─── Settings panel ─────────────────────────────────────────────── */
.settings-panel {
  font-family: 'Geist Mono', monospace;
  font-size: 0.6rem;
  position: absolute;
  top: calc(100% + 0.4rem);
  right: 1rem;
  z-index: 100;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  padding: 1rem 1.25rem;
  display: none;
  min-width: 220px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
}

.settings-panel.open {
  display: block;
}

.settings-panel label {
  display: block;
  color: var(--color-text-secondary);
  margin-bottom: 0.2rem;
  margin-top: 0.6rem;
}

.settings-panel label:first-child {
  margin-top: 0;
}

.settings-panel select {
  width: 100%;
  font-family: 'Geist Mono', monospace;
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--color-border);
  border-radius: 0.25rem;
  background: var(--color-bg);
  color: var(--color-text-primary);
  outline: none;
}

.settings-panel select:focus {
  border-color: var(--color-accent);
}

.setting-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.setting-row input[type="range"] {
  flex: 1;
}

/* ─── Range slider (DaisyUI-style) ───────────────────────────────── */
input[type="range"] {
  --range-thumb: 0.5rem;
  --range-track-h: 0.5rem;
  --range-fill: var(--color-accent);
  --range-empty: var(--color-border);

  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 1rem;
  background: transparent;
  cursor: pointer;
  padding: 0;
  border: none;
}

/* ── Track ── */
input[type="range"]::-webkit-slider-runnable-track {
  height: var(--range-track-h);
  border-radius: 999px;
  background: linear-gradient(
    to right,
    var(--range-fill) var(--range-progress, 0%),
    var(--range-empty) var(--range-progress, 0%)
  );
}

input[type="range"]::-moz-range-track {
  height: var(--range-track-h);
  border-radius: 999px;
  background: var(--range-empty);
}

input[type="range"]::-moz-range-progress {
  height: var(--range-track-h);
  border-radius: 999px;
  background: var(--range-fill);
}

/* ── Thumb ── */
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 0.5rem;
  height: var(--range-track-h);
  border-radius: 999px;
  background: var(--color-surface);
  border: 1.5px solid var(--range-fill);
  margin-top: 0;
}

input[type="range"]::-moz-range-thumb {
  width: 0.5rem;
  height: var(--range-track-h);
  border-radius: 999px;
  background: var(--color-surface);
  border: 1.5px solid var(--range-fill);
}

.setting-value {
  color: var(--color-text-secondary);
  min-width: 2.5rem;
  text-align: right;
}

.reset-btn {
  margin-top: 0.8rem;
  width: 100%;
  font-family: 'Geist Mono', monospace;
  padding: 0.25rem 0;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.reset-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.align-toggle {
  display: flex;
  gap: 0.25rem;
}

.align-btn {
  flex: 1;
  font-family: 'Geist Mono', monospace;
  font-size: 0.6rem;
  padding: 0.25rem 0;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.align-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.align-btn.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

/* ─── Input bar ──────────────────────────────────────────────────── */
.input-bar {
  width: 100%;
  max-width: var(--content-width);
  margin: 2rem auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

.input-bar input {
  flex: 1;
  font-family: 'Geist Mono', monospace;
  font-size: 0.8rem;
  padding: 0.3rem 0;
  border: none;
  border-bottom: 1.5px solid var(--color-accent);
  background: transparent;
  color: var(--color-text-primary);
  outline: none;
}

.input-bar input::placeholder {
  color: var(--color-text-secondary);
}

.input-bar button {
  font-family: 'Geist Mono', monospace;
  font-size: 0.8rem;
  padding: 0.3rem 1rem;
  border: none;
  border-radius: 0;
  background: var(--color-accent);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}

.input-bar button:hover {
  background: var(--color-accent-hover);
}

.input-bar button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ─── Status ─────────────────────────────────────────────────────── */
.status {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
}

.status.error {
  color: #c0392b;
}

/* ─── Article container ──────────────────────────────────────────── */
.article-container {
  max-width: calc(var(--content-width) + 150px);
  margin-inline: auto;
  padding: 2rem 1.5rem 5rem;
  display: none;
}

.article-container.visible {
  display: block;
}

/* ─── Header ─────────────────────────────────────────────────────── */
.post-header {
  text-align: center;
  margin-inline: auto;
  margin-bottom: 0.5rem;
  max-width: calc(var(--content-width) + 120px);
}

.post-title {
  font-size: clamp(1.8rem, 7vw, 2.45rem);
  font-family: var(--font-reading);
  color: var(--color-accent);
  font-weight: 700;
  line-height: 1;
  margin-bottom: 1rem;
  max-width: calc(var(--content-width) + 120px);
  margin-inline: auto;
}

.post-source {
  font-family: 'Geist Mono', monospace;
  font-size: 0.75rem;
  margin-bottom: 1.25rem;
}

.post-source a {
  text-decoration: underline;
  color: var(--color-text-secondary);
}

.post-source a:hover {
  color: var(--color-accent);
}

.post-description {
  font-size: 0.9rem;
  font-style: italic;
  color: var(--color-text-secondary);
  line-height: 1.3;
  margin-bottom: 1.5rem;
  max-width: var(--content-width);
  margin-inline: auto;
}

/* ─── Divider ────────────────────────────────────────────────────── */
.divider {
  text-align: center;
  color: var(--color-accent);
  font-size: 1.5rem;
  letter-spacing: 0.4em;
  margin: 2rem 0;
}

/* ─── Prose content ──────────────────────────────────────────────── */
.prose {
  font-family: var(--font-reading);
  font-size: var(--font-size-prose);
  line-height: var(--line-height-prose);
  text-align: var(--text-align-prose);
  max-width: var(--content-width);
  margin-inline: auto;
}

.prose p {
  margin-bottom: var(--paragraph-spacing);
}

.prose h1 {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.1;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-top: 3rem;
  margin-bottom: 1rem;
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.1;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
}

.prose blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.5rem;
  margin: 2rem 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

.prose ul,
.prose ol {
  padding-left: 1.5rem;
  margin-bottom: 1.4rem;
  list-style: none;
}

.prose li {
  margin-bottom: 0.4rem;
  position: relative;
  padding-left: 1.2rem;
}

.prose ul > li::before {
  content: "\2767";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.prose ol {
  list-style: decimal;
}

.prose pre {
  overflow-x: auto;
  padding: 1.25rem;
  margin: 2rem 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
}

.prose code {
  font-family: var(--font-mono);
}

.prose code:not(pre code) {
  background: var(--color-accent-light);
  color: var(--color-accent);
  padding: 0.1em 0.4em;
  border-radius: 0.25rem;
  font-size: 0.8em;
}

.prose img {
  max-width: 100%;
  margin: 2rem auto;
  display: block;
}

.prose table {
  border-collapse: collapse;
  width: 100%;
  margin: 2rem 0;
  font-size: 0.85rem;
}

.prose th,
.prose td {
  border: 1px solid var(--color-border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

.prose th {
  background: var(--color-accent-light);
  font-weight: 700;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 2rem 0;
}

/* ─── Actions ────────────────────────────────────────────────────── */
.actions {
  max-width: var(--content-width);
  margin: 2rem auto 0;
  display: flex;
  gap: 0.5rem;
}

.actions button {
  font-family: var(--font-reading);
  font-size: 1rem;
  padding: 0.3rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 0;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.15s;
}

.actions button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ─── Footer ─────────────────────────────────────────────────────── */
.site-footer {
  margin-top: auto;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.65rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

.site-footer a {
  color: var(--color-text-secondary);
  text-decoration: underline;
}

.site-footer a:hover {
  color: var(--color-accent);
}

/* ─── Empty state ────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  margin-top: 4rem;
  padding: 0 1.5rem;
}