/* style.css — TXTC Premium Editorial Theme */

:root {
  /* --- LIGHT MODE (Default) --- */
  --bg-primary: #F7F4EE;    /* Background (Warm-Neutral) */
  --bg-secondary: #FFFDF8;  /* Surface (Near White) */
  --bg-panel: var(--bg-secondary);
  --bg-input: var(--bg-primary);
  --text-primary: #1F1A17;  /* Text primary */
  --text-secondary: #5C514A;/* Text secondary */
  --accent: #7A3E2B;        /* Accent 1 (Burnt Umber) */
  --accent-hover: #9C5B41;
  --q-color: var(--accent); /* Q color maps to accent 1 */
  --a-color: #6B705C;       /* A color maps to Accent 2 (Eucalyptus) */
  --border: #D8CEC2;
  --shadow-subtle: 0 1px 3px rgba(0, 0, 0, 0.03), 0 5px 15px rgba(0, 0, 0, 0.05);
  --radius: 10px;           /* Updated from 8px to 10px */
}

/* --- DARK MODE (Warm Editorial) --- */
.dark {
  --bg-primary: #1F1A17;
  --bg-secondary: #332D29;
  --bg-panel: var(--bg-secondary);
  --bg-input: var(--bg-primary);
  --text-primary: #F7F4EE;
  --text-secondary: #D8CEC2;
  --accent: #C28B73;        /* Lighter for contrast */
  --accent-hover: #E09F7F;
  --q-color: var(--accent);
  --a-color: #B0B3A6;
  --border: #5C514A;
  --shadow-subtle: none;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
}

/* ══════════════════════════════════════════════════
   LANDING SECTION
   ══════════════════════════════════════════════════ */

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

/* ── Nav Bar ──────────────────────────────────────── */

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 32px;
  background: var(--bg-secondary);
  box-shadow: var(--shadow-subtle);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-home {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-home:hover {
  color: var(--text-primary);
}

.nav-cta {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  padding: 8px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s;
}

.nav-cta:hover {
  background: var(--accent-hover);
}

.nav-auth-badge {
  font-size: 12px;
  font-weight: 600;
  color: #1B5E20;
  background: #E6F4EA;
  border: 1px solid #C7E8D0;
  padding: 6px 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.nav-auth-badge[hidden],
.nav-user-link[hidden] {
  display: none !important;
}

.dark .nav-auth-badge {
  color: #B7F7C6;
  background: rgba(46, 125, 80, 0.25);
  border-color: rgba(72, 168, 110, 0.4);
}

.nav-auth {
  position: relative;
}

/* Bridge to prevent dropdown from disappearing when moving mouse to it */
.nav-auth::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 12px;
}

.nav-auth-badge:hover {
  border-color: #8FD8A6;
  box-shadow: var(--shadow-subtle);
}

.nav-auth-summary {
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
  margin-bottom: 8px;
}

.nav-auth-email-label {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 2px;
}

.nav-auth-email {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-auth-menu {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  min-width: 200px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-subtle);
  padding: 8px;
  display: block;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  pointer-events: none;
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
  z-index: 80;
}

.nav-auth:hover .nav-auth-menu,
.nav-auth:focus-within .nav-auth-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.nav-auth-action {
  width: 100%;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 600;
  text-align: left;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
}

.nav-auth-action:hover {
  background: var(--bg-input);
}

.nav-user {
  position: relative;
}

.nav-user-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.nav-user-button:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-subtle);
}

.nav-user-label {
  font-size: 13px;
  font-weight: 600;
}

.nav-plan-label {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 2px 8px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-input);
}

.nav-user-caret {
  color: var(--text-secondary);
}

.nav-user-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 220px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-subtle);
  padding: 12px;
  display: none;
  z-index: 80;
}

.nav-user-menu.is-open {
  display: block;
}

.nav-user-summary {
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin-bottom: 10px;
}

.nav-user-email {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.nav-user-plan {
  font-size: 12px;
  color: var(--text-secondary);
}

.nav-user-link {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: none;
  text-decoration: none;
  cursor: pointer;
}

.nav-user-link:hover {
  background: var(--bg-input);
}

.nav-user-link-danger {
  color: #dc2626;
}

.theme-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Hero ─────────────────────────────────────────── */

.hero {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px 48px;
  background:
    radial-gradient(ellipse at 50% 0%, var(--accent) 0%, transparent 60%),
    var(--bg-primary);
}

.hero-brand {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 12px;
}

.hero-icon {
  width: 96px;
  height: 96px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-subtle);
}

.hero-brand h1 {
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 64px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--accent);
}

.hero-tagline {
  font-size: 22px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.hero-description {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s;
}

.hero-link:hover {
  color: var(--accent-hover);
}

.btn-hero {
  display: inline-block;
  padding: 14px 40px;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
  box-shadow: var(--shadow-subtle);
}

.btn-hero:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-hero:active {
  transform: translateY(0);
}

/* ── Supported Formats ────────────────────────────── */

.formats-section {
  padding: 64px 24px;
  background: var(--bg-secondary);
}

.section-title {
  text-align: center;
  font-family: "DM Serif Display", Georgia, serif;
  font-size: 32px;
  font-weight: 400;
  margin-bottom: 48px;
  color: var(--text-primary);
}

.formats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.format-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 24px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-subtle);
  transition: border-color 0.2s, transform 0.2s;
}

.format-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.format-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.format-hint {
  font-size: 11px;
  color: var(--text-secondary);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  opacity: 0.7;
}

/* ── How It Works ─────────────────────────────────── */

.steps-section {
  padding: 64px 24px 80px;
  background: var(--bg-primary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 780px;
  margin: 0 auto;
}

.step-card {
  text-align: center;
  padding: 28px 20px;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}

.step-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.step-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ══════════════════════════════════════════════════
   CONVERTER TOOL SECTION
   ══════════════════════════════════════════════════ */

.converter-section {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── Header ──────────────────────────────────────── */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px 12px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 34px;
}

.header-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
}

.platform-divider {
  width: 1px;
  height: 36px;
  margin-left: 30px;
  background: var(--border);
  align-self: center;
}

.platform-apps {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-left: 30px;
}

.platform-apps-label {
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

/* Peiraza nav button → contest page */
.quiz-nav-btn {
  padding: 5px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.5px;
}
.quiz-nav-btn:hover {
  opacity: 0.9;
}
.quiz-nav-btn[aria-expanded="true"] {
  box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.12) inset;
}

/* YouTube connect (shown when Quiz active and not yet connected) */
.quiz-sub-btn {
  margin-left: 6px;
  padding: 5px 12px;
  border: 1px solid #c4302b;
  border-radius: 999px;
  background: #fff;
  color: #c4302b;
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.quiz-sub-btn:hover { background: #c4302b; color: #fff; }

/* Start / Join toggles */
.quiz-toggle-btn {
  margin-left: 6px;
  padding: 5px 14px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--bg-input);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
}
.quiz-toggle-btn:hover { background: var(--accent); color: #fff; }

.auth-status {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
}

.auth-user {
  color: var(--text-secondary);
  max-width: 180px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth-signout {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.auth-signout:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.auth-signin-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  transition: all 0.2s;
}

/* Usage toggle button (sits left of the username in the header) */
.usage-toggle {
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 12px;
  padding: 4px 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.usage-toggle:hover,
.usage-toggle.is-open {
  border-color: var(--accent);
  color: var(--accent);
}

/* Usage row values + "More Minutes" action */
.usage-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
}

.usage-more-btn {
  background: transparent;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.usage-more-btn:hover {
  background: var(--accent);
  color: #fff;
}

.auth-signin-link:hover {
  background: var(--accent);
  color: #fff;
}

/* ── Controls Bar ────────────────────────────────── */

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.control-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* The hidden attribute must win over the flex display above (e.g. the
   Q&A count group, shown only for None / Flash Cards). */
.control-group[hidden] {
  display: none;
}

.control-group label {
  font-size: 13px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.control-group input[type="text"],
.control-group select {
  padding: 6px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
}

.control-group input[type="text"]:focus,
.control-group select:focus {
  border-color: var(--accent);
}

.control-group input[type="text"] {
  width: 150px;
}

/* Session date holds a short date like "6/1/2026", so keep it narrow. */
#sessionDate {
  width: 90px;
}

.control-group input[type="number"] {
  width: 64px;
  padding: 6px 8px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
}

.control-group input[type="number"]:focus {
  border-color: var(--accent);
}

/* Q&A pair count holds at most two digits (1–50). Keep it narrow but wide
   enough that the digits clear the padding + spinner arrows. */
#qaCount {
  width: 56px;
  padding-left: 6px;
  padding-right: 4px;
}

.control-group select {
  cursor: pointer;
}

.control-group select[multiple] {
  min-width: 220px;
  padding: 4px;
}

.control-group .hint {
  font-size: 12px;
  color: var(--text-secondary);
  font-style: italic;
}

.controls[hidden] {
  display: none;
}

.hint-inline {
  font-size: 12px;
  color: var(--text-secondary);
  margin-left: 4px;
  line-height: 1;
}

.checkbox-inline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  white-space: nowrap;
}

.checkbox-inline input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

.icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s, transform 0.2s;
}

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

.icon-button:active {
  transform: rotate(180deg);
}

.icon-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.icon-button:disabled:hover {
  color: var(--text-secondary);
  border-color: var(--border);
}

/* Help (?) button + click-to-show popover (e.g. Obsidian import instructions) */
.help-wrap {
  position: relative;
  display: inline-flex;
}

.help-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}

.help-button:hover,
.help-button.is-open {
  color: var(--accent);
  border-color: var(--accent);
}

.help-popover {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 60;
  width: 320px;
  max-width: 80vw;
  padding: 12px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
  font-size: 12px;
  line-height: 1.55;
  color: var(--text-primary);
  text-align: left;
  white-space: normal;
}

.help-popover[hidden] {
  display: none;
}

/* Keep the Cloze Difficulty row label/radio cluster on the same baseline
   as the inputs/dropdowns in the rows above. */
.controls-cloze .control-group > label {
  line-height: 1;
}

.controls-cloze .radio-group label {
  line-height: 1;
}

.controls-cloze .radio-group input[type="radio"] {
  margin: 0;
}

/* Custom multi-select dropdown (checkboxes inside a popover) */
.multi-dropdown {
  position: relative;
  display: inline-block;
}

.multi-dropdown-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 13px;
  cursor: pointer;
  min-width: 160px;
  justify-content: space-between;
}

/* The Tags dropdown's labels are very short ("Q&A"), so it doesn't need
   the default min-width on either the button or the open panel. */
#tagsDropdown .multi-dropdown-button {
  min-width: 80px;
}

#tagsDropdown .multi-dropdown-panel {
  min-width: 100px;
}

.multi-dropdown-button:focus {
  outline: none;
  border-color: var(--accent);
}

.multi-dropdown-caret {
  flex-shrink: 0;
  opacity: 0.7;
}

.multi-dropdown-panel {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  z-index: 100;
  min-width: 220px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.multi-dropdown-panel[hidden] {
  display: none;
}

.multi-dropdown-panel label {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  font-size: 13px;
  color: var(--text-primary);
  cursor: pointer;
  border-radius: var(--radius);
}

.multi-dropdown-panel label:hover {
  background: var(--bg-secondary);
}

.multi-dropdown-panel input[type="checkbox"] {
  cursor: pointer;
}

/* Radio buttons */
.radio-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.radio-group label {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
}

.radio-group input[type="radio"] {
  accent-color: var(--accent);
}

/* ── Main Panels ─────────────────────────────────── */

.main {
  flex: 1;
  display: flex;
  gap: 0;
  min-height: 0;
}

.panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.panel-header {
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.panel:first-child {
  border-right: 1px solid var(--border);
}

.audio-upload-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-input);
  font-size: 12px;
  color: var(--text-secondary);
}

.audio-upload-label {
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.audio-upload-row input[type="file"] {
  min-width: 0;
  flex: 1;
  font-size: 12px;
  color: var(--text-secondary);
}

.audio-upload-hint {
  white-space: nowrap;
}

/* Input textarea */
#inputText {
  flex: 1;
  width: 100%;
  padding: 16px;
  background: var(--bg-input);
  border: none;
  color: var(--text-primary);
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.6;
  resize: none;
  outline: none;
}

#inputText::placeholder {
  color: var(--text-secondary);
  opacity: 0.6;
}

/* While a box-art table is displayed, tighten line spacing to line-height 1 so
   the vertical box-drawing characters tile into solid (not dashed) lines. */
#inputText.tables-solid {
  line-height: 1;
}

/* Preview pane */
#preview {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  overflow-x: auto;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.6;
  background: var(--bg-input);
  white-space: pre-wrap;
  word-wrap: break-word;
}

/* Pipe tables render as real HTML tables in the preview so they reflow with
   the pane (like chat UIs); cells wrap inside their columns. */
#preview .md-table {
  /* Single-ownership borders (table draws top+left, cells draw right+bottom)
     keep every grid line a single crisp segment — avoids the dotted/broken
     vertical borders that border-collapse produces at fractional column widths. */
  border-collapse: separate;
  border-spacing: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
  margin: 8px 0;
  width: auto;
  max-width: 100%;
  table-layout: auto;
  white-space: normal;
}

#preview .md-table th,
#preview .md-table td {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 4px 8px;
  text-align: left;
  vertical-align: top;
  white-space: normal;
  word-break: break-word;
  overflow-wrap: anywhere;
}

#preview .md-table th {
  font-weight: 600;
  background: rgba(127, 127, 127, 0.12);
}

#preview .q-line {
  color: var(--q-color);
}

#preview .a-line {
  color: var(--a-color);
}

#preview .meta-line {
  color: var(--text-secondary);
  opacity: 0.7;
}

#preview .divider-line {
  color: var(--text-secondary);
  opacity: 0.4;
}

#preview .empty-state {
  color: var(--text-secondary);
  opacity: 0.5;
  font-style: italic;
}

#preview .loading-state {
  color: var(--q-color);
  font-style: italic;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

#preview .error-state {
  color: var(--accent);
  font-style: italic;
}

/* ── Footer / Action Bar ─────────────────────────── */

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 24px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
}

.footer-left,
.footer-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer .pair-count {
  font-size: 13px;
  color: var(--text-secondary);
}

.btn {
  padding: 8px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

.btn:active {
  transform: scale(0.97);
}

.btn-clear {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-clear:hover {
  border-color: var(--text-primary);
  color: var(--text-primary);
}

.btn-export {
  background: var(--accent);
  color: #fff;
}

.btn-export:hover {
  background: var(--accent-hover);
}

.btn-export:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════ */

@media (max-width: 768px) {
  /* Landing */
  .hero {
    padding: 48px 20px 32px;
  }

  .hero-brand h1 {
    font-size: 42px;
  }

  .hero-icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
  }

  .hero-tagline {
    font-size: 18px;
  }

  .hero-description {
    font-size: 15px;
  }

  .formats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .formats-section,
  .steps-section {
    padding: 40px 16px;
  }

  /* Converter */
  .main {
    flex-direction: column;
  }

  .panel:first-child {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .panel {
    min-height: 35vh;
  }

  .controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .control-group input[type="text"] {
    width: 100%;
  }

  .header h2 {
    font-size: 18px;
  }

  .nav-bar {
    padding: 12px 16px;
  }
}

@media (max-width: 480px) {
  .formats-grid {
    grid-template-columns: 1fr;
  }

  .hero-brand {
    gap: 14px;
  }

  .hero-brand h1 {
    font-size: 36px;
  }

  .hero-icon {
    width: 56px;
    height: 56px;
  }
}

/* Legal footer (Terms / Privacy / Contact) */
.legal-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 18px 16px 28px;
  font-size: 12px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  margin-top: 24px;
}
.legal-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}
.legal-footer a:hover {
  color: var(--accent);
  text-decoration: underline;
}
.legal-footer-copy {
  flex-basis: 100%;
  text-align: center;
  opacity: 0.7;
  margin-top: 4px;
}