/* ==========================================================================
   ImageToText OCR — styles
   ========================================================================== */

/* ---------- Design tokens ---------- */
:root {
  --font-sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans",
    "Helvetica Neue", Arial, "Noto Sans Devanagari", "Noto Sans Gujarati", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Cascadia Code", Menlo, Consolas, monospace;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4.5rem;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 18px;

  --container: 1180px;
  --header-h: 64px;
  --transition: 160ms ease;

  /* Light theme (default) */
  --bg: #f6f7fb;
  --bg-alt: #eef0f7;
  --surface: #ffffff;
  --surface-2: #f8f9fc;
  --border: #e1e4ee;
  --border-strong: #c9cedd;
  --text: #141827;
  --text-muted: #5a6178;
  --text-faint: #8a90a6;

  --primary: #3346d3;
  --primary-hover: #2636b5;
  --primary-soft: #eceffe;
  --primary-contrast: #ffffff;
  --focus: #5b6cf0;

  --success: #12775a;
  --success-soft: #e5f6ef;
  --warning: #8a5a00;
  --warning-soft: #fdf3dc;
  --danger: #b4232f;
  --danger-soft: #fdecee;

  --shadow-sm: 0 1px 2px rgba(20, 24, 39, 0.06);
  --shadow: 0 1px 2px rgba(20, 24, 39, 0.05), 0 8px 24px -12px rgba(20, 24, 39, 0.18);
  --shadow-lg: 0 24px 60px -28px rgba(30, 40, 110, 0.35);

  color-scheme: light;
}

:root[data-theme="dark"] {
  --bg: #0f1220;
  --bg-alt: #141829;
  --surface: #171b2d;
  --surface-2: #1c2136;
  --border: #2a3049;
  --border-strong: #3a4263;
  --text: #e9ecf6;
  --text-muted: #a5acc4;
  --text-faint: #7a819b;

  --primary: #7d8bff;
  --primary-hover: #97a2ff;
  --primary-soft: #232a52;
  --primary-contrast: #0d1024;
  --focus: #98a4ff;

  --success: #4fd1a5;
  --success-soft: #133229;
  --warning: #f2c46b;
  --warning-soft: #33290f;
  --danger: #ff8a93;
  --danger-soft: #3a171c;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.35), 0 10px 30px -14px rgba(0, 0, 0, 0.7);
  --shadow-lg: 0 24px 60px -28px rgba(0, 0, 0, 0.8);

  color-scheme: dark;
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--transition), color var(--transition);
}

h1, h2, h3 {
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0;
}

p { margin: 0 0 var(--space-3); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--primary);
  text-underline-offset: 3px;
}
a:hover { color: var(--primary-hover); }

img { max-width: 100%; display: block; }

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 6px;
}

kbd {
  font-family: var(--font-mono);
  font-size: 0.8em;
  padding: 0.05em 0.4em;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

[hidden] { display: none !important; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.container.narrow { max-width: 820px; }

.muted { color: var(--text-muted); }

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100px;
  z-index: 100;
  padding: var(--space-2) var(--space-4);
  background: var(--primary);
  color: var(--primary-contrast);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-3); color: var(--primary-contrast); }

.icon {
  width: 1.15em;
  height: 1.15em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-right: auto;
  white-space: nowrap;
}
.brand strong { color: var(--primary); font-weight: 750; }
.brand:hover { color: var(--text); }

.site-nav {
  display: flex;
  gap: var(--space-1);
}
.site-nav a {
  white-space: nowrap;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 500;
  transition: background-color var(--transition), color var(--transition);
}
.site-nav a:hover { color: var(--text); background: var(--bg-alt); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 42px;
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition), border-color var(--transition),
    color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { cursor: not-allowed; opacity: 0.5; }

.btn-primary {
  background: var(--primary);
  color: var(--primary-contrast);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-secondary:hover:not(:disabled) { background: var(--surface-2); border-color: var(--text-faint); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
}
.btn-ghost:hover:not(:disabled) { background: var(--bg-alt); color: var(--text); }

.btn-lg { min-height: 52px; padding: 0 var(--space-5); font-size: 1.02rem; border-radius: 12px; }
.btn-sm { min-height: 32px; padding: 0 var(--space-3); font-size: 0.85rem; }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text-muted);
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}
.icon-btn .icon { width: 20px; height: 20px; }
.icon-btn:hover:not(:disabled) { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); }
.icon-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.icon-btn-danger:hover:not(:disabled) { color: var(--danger); border-color: var(--danger); background: var(--danger-soft); }

.theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-6) 0 var(--space-5);
  text-align: center;
  background:
    radial-gradient(60% 80% at 50% 0%, var(--primary-soft) 0%, transparent 70%);
}
.hero-inner { max-width: 820px; }
.eyebrow {
  display: inline-block;
  margin-bottom: var(--space-4);
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(2rem, 4.2vw, 2.9rem);
  font-weight: 780;
  letter-spacing: -0.035em;
  margin-bottom: var(--space-4);
}
.hero-lead {
  max-width: 640px;
  margin: 0 auto var(--space-5);
  color: var(--text-muted);
  font-size: clamp(1rem, 1.6vw, 1.12rem);
}
.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}
.privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0;
  color: var(--success);
  font-size: 0.92rem;
  font-weight: 600;
}

/* ---------- Workspace ---------- */
.workspace-section {
  padding: var(--space-4) 0 var(--space-8);
  outline: none;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: stretch;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
  padding: var(--space-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}
.panel-title {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.08rem;
  font-weight: 700;
}
.step-dot {
  display: inline-grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
}

.field-inline {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.field-inline label {
  white-space: nowrap;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-muted);
}
.select {
  min-width: 0;
  min-height: 38px;
  max-width: 220px;
  padding: 0 2rem 0 var(--space-3);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background-color: var(--surface);
  background-image: linear-gradient(45deg, transparent 50%, var(--text-muted) 50%),
    linear-gradient(135deg, var(--text-muted) 50%, transparent 50%);
  background-position: calc(100% - 15px) 52%, calc(100% - 10px) 52%;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  appearance: none;
  -webkit-appearance: none;
  font-size: 0.92rem;
  cursor: pointer;
}
.select:disabled { opacity: 0.55; cursor: not-allowed; }

/* Dropzone */
.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 300px;
  padding: var(--space-6) var(--space-5);
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background-color var(--transition);
}
.dropzone:hover,
.dropzone.is-dragover {
  border-color: var(--primary);
  background: var(--primary-soft);
}
.dropzone.is-disabled { opacity: 0.55; cursor: not-allowed; }
.dropzone-icon {
  width: 52px;
  height: 52px;
  fill: none;
  stroke: var(--primary);
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: var(--space-2);
}
.dropzone-title { margin: 0; font-size: 1.05rem; }
.dropzone-hint { margin: 0; max-width: 380px; color: var(--text-muted); font-size: 0.88rem; }
.link-like { color: var(--primary); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }

/* Preview */
.preview { display: flex; flex-direction: column; gap: var(--space-3); }
.preview-figure {
  position: relative;
  margin: 0;
  display: grid;
  place-items: center;
  min-height: 220px;
  max-height: 380px;
  padding: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    repeating-conic-gradient(var(--bg-alt) 0% 25%, var(--surface-2) 0% 50%) 50% / 18px 18px;
  overflow: hidden;
}
.preview-figure img {
  max-height: 350px;
  width: auto;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: var(--shadow-sm);
}
.preview-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  color: var(--text-muted);
  font-size: 0.9rem;
}
.preview-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}
.file-info { min-width: 0; flex: 1 1 180px; }
.file-name {
  margin: 0;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.file-details { margin: 0; color: var(--text-muted); font-size: 0.85rem; }
.preview-tools { display: flex; gap: var(--space-2); }

/* Queue (multiple images) */
.queue {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
}
.queue-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}
.queue-title { margin: 0; font-size: 0.86rem; font-weight: 600; color: var(--text-muted); }
.queue-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  max-height: 210px;
  overflow-y: auto;
}
.queue-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition);
}
.queue-item:hover { background: var(--surface-2); }
.queue-item[aria-current="true"] { background: var(--primary-soft); border-color: color-mix(in srgb, var(--primary) 35%, transparent); }
.queue-thumb {
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 6px;
  object-fit: cover;
  background: var(--bg-alt);
  border: 1px solid var(--border);
}
.queue-name {
  flex: 1;
  min-width: 0;
  font-size: 0.88rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.badge {
  flex: none;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  background: var(--bg-alt);
  color: var(--text-muted);
}
.badge-working { background: var(--primary-soft); color: var(--primary); }
.badge-done { background: var(--success-soft); color: var(--success); }
.badge-empty { background: var(--warning-soft); color: var(--warning); }
.badge-error { background: var(--danger-soft); color: var(--danger); }

/* Checkbox */
.check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: 0.88rem;
  color: var(--text-muted);
  cursor: pointer;
}
.check input {
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--primary);
  flex: none;
  cursor: pointer;
}

/* Alerts */
.alert {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  border: 1px solid;
  font-size: 0.92rem;
}
.alert-error { background: var(--danger-soft); border-color: color-mix(in srgb, var(--danger) 40%, transparent); color: var(--danger); }
.alert-warning { background: var(--warning-soft); border-color: color-mix(in srgb, var(--warning) 40%, transparent); color: var(--warning); }
.alert-success { background: var(--success-soft); border-color: color-mix(in srgb, var(--success) 40%, transparent); color: var(--success); }
.alert p { margin: 0; }
.alert ul { margin: var(--space-1) 0 0; padding-left: 1.1rem; }

/* Progress */
.progress-block {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
}
.progress-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.progress-label { margin: 0; font-weight: 600; font-size: 0.92rem; }
.progress-value { margin: 0; font-variant-numeric: tabular-nums; color: var(--text-muted); font-size: 0.9rem; }
.progress-track {
  height: 8px;
  border-radius: 999px;
  background: var(--bg-alt);
  overflow: hidden;
}
.progress-fill {
  width: 0%;
  height: 100%;
  border-radius: inherit;
  background: var(--primary);
  transition: width 200ms ease;
}
.progress-block.is-complete .progress-fill { background: var(--success); }
.progress-block.is-error .progress-fill { background: var(--danger); }
.progress-batch { margin: var(--space-2) 0 0; font-size: 0.84rem; color: var(--text-muted); }

.panel-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

/* Output editor */
.counts { margin: 0; font-size: 0.86rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }

.editor {
  position: relative;
  flex: 1;
  display: flex;
  min-height: 380px;
}
.editor-textarea {
  flex: 1;
  width: 100%;
  min-height: 380px;
  padding: var(--space-4);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-2);
  font-family: var(--font-sans);
  font-size: 0.97rem;
  line-height: 1.65;
  resize: vertical;
  white-space: pre-wrap;
  tab-size: 4;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.editor-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent);
}
.empty-state {
  position: absolute;
  inset: 1px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6);
  text-align: center;
  pointer-events: none;
  border-radius: var(--radius);
}
.empty-state svg {
  width: 52px;
  height: 52px;
  fill: none;
  stroke: var(--text-faint);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: var(--space-2);
}
.empty-title { margin: 0; font-weight: 650; }
.empty-text { margin: 0; max-width: 320px; color: var(--text-muted); font-size: 0.9rem; }
.empty-state.is-warning svg { stroke: var(--warning); }

.output-actions { margin-top: 0; }
.output-actions .btn { padding: 0 var(--space-3); }
.accuracy-note { margin: 0; font-size: 0.82rem; color: var(--text-muted); }

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-strong);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Content sections ---------- */
.section { padding: var(--space-8) 0; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--border); }
.section-title {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 750;
  margin-bottom: var(--space-5);
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}
.step-card {
  padding: var(--space-5);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}
.step-card h3 { font-size: 1.12rem; margin: var(--space-3) 0 var(--space-2); }
.step-card p { color: var(--text-muted); font-size: 0.95rem; }
.step-num {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 750;
}

.two-col {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-7);
}
.format-list {
  list-style: none;
  margin: 0 0 var(--space-4);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.format-list li { display: flex; align-items: center; gap: var(--space-3); font-size: 0.92rem; }
.tag {
  display: inline-block;
  min-width: 96px;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  font-weight: 650;
  font-size: 0.86rem;
}
.bullet-list { margin: 0; padding-left: 1.2rem; display: grid; gap: var(--space-2); color: var(--text-muted); }

.faq { display: grid; gap: var(--space-3); }
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.faq details[open] { border-color: var(--border-strong); }
.faq summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  width: 9px;
  height: 9px;
  flex: none;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg) translateY(-3px);
  transition: transform var(--transition);
}
.faq details[open] summary::after { transform: rotate(225deg) translateY(-1px); }
.faq details p { padding: 0 var(--space-5) var(--space-4); color: var(--text-muted); }

/* ---------- Footer ---------- */
.site-footer {
  padding: var(--space-7) 0 var(--space-5);
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--space-6);
}
.footer-about .brand { margin-bottom: var(--space-3); }
.footer-about p { max-width: 460px; }
.footer-title {
  margin: 0 0 var(--space-3);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.footer-nav ul { list-style: none; margin: 0; padding: 0; display: grid; gap: var(--space-2); }
.footer-nav a { color: var(--text); text-decoration: none; }
.footer-nav a:hover { color: var(--primary); text-decoration: underline; }
.footer-bottom {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

/* ---------- Content additions ---------- */
.section-lead { max-width: 760px; color: var(--text-muted); margin-bottom: var(--space-5); }
.steps-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bullet-list.numbered { padding-left: 1.4rem; }
.bullet-list strong { color: var(--text); }

.lang-grid {
  list-style: none;
  margin: 0 0 var(--space-5);
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.lang-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 38px;
  padding: 0 var(--space-4);
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  font-size: 0.92rem;
  font-weight: 550;
}
.lang-chip-link {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--primary) 40%, var(--border));
  text-decoration: none;
  transition: background-color var(--transition);
}
.lang-chip-link:hover { background: var(--primary-soft); color: var(--primary); }

.breadcrumbs { padding-top: var(--space-4); font-size: 0.86rem; }
.breadcrumbs ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: var(--space-2); color: var(--text-muted); }
.breadcrumbs li + li::before { content: "/"; margin-right: var(--space-2); color: var(--text-faint); }
.breadcrumbs a { color: var(--text-muted); }
.breadcrumbs a:hover { color: var(--primary); }
.hero .breadcrumbs { padding: 0; }

.prose-page { padding-bottom: var(--space-8); }
.prose { padding-top: var(--space-5); }
.prose h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.6rem);
  font-weight: 780;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-4);
}
.prose h2 { font-size: 1.35rem; margin: var(--space-6) 0 var(--space-3); }
.prose h3 { font-size: 1.08rem; margin: var(--space-5) 0 var(--space-2); }
.prose ul { padding-left: 1.2rem; display: grid; gap: var(--space-2); margin: 0 0 var(--space-4); }
.prose .lead { font-size: 1.1rem; color: var(--text-muted); }
.prose code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  padding: 0.1em 0.35em;
  border-radius: 5px;
  background: var(--bg-alt);
}
.prose .btn { text-decoration: none; }

/* Reserved advertising positions: hidden until ads are approved and enabled (see docs/ADSENSE.md).
   Placed between content sections only — never inside or next to the converter controls. */
.ad-slot { padding: var(--space-5) 0; }
.ad-slot .container { display: grid; justify-items: center; gap: var(--space-2); }
.ad-label {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.ad-slot-inner {
  width: 100%;
  max-width: 970px;
  min-height: 250px; /* reserves space to avoid layout shift when an ad loads */
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

/* ---------- Toasts ---------- */
.toast-region {
  position: fixed;
  left: 50%;
  bottom: var(--space-5);
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  width: max-content;
  max-width: calc(100vw - 32px);
  pointer-events: none;
}
.toast {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
  box-shadow: var(--shadow);
  font-size: 0.92rem;
  font-weight: 550;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
}
.toast.is-visible { opacity: 1; transform: translateY(0); }
.toast-success::before,
.toast-error::before,
.toast-warning::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex: none;
}
.toast-success::before { background: #3ddc97; }
.toast-error::before { background: #ff6b76; }
.toast-warning::before { background: #ffc857; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .workspace { grid-template-columns: minmax(0, 1fr); }
  .editor, .editor-textarea { min-height: 300px; }
  .steps, .steps-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .two-col { grid-template-columns: minmax(0, 1fr); gap: var(--space-6); }
  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .footer-about { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  :root { --header-h: 58px; }
  .container { padding: 0 var(--space-4); }
  .header-inner { gap: var(--space-2); }
  .brand span { font-size: 0.98rem; }
  .site-nav a { padding: var(--space-2); font-size: 0.86rem; }
  .site-nav a[href="/"] { display: none; }
  .hero { padding: var(--space-7) 0 var(--space-5); }
  .panel { padding: var(--space-4); border-radius: var(--radius); }
  .dropzone { min-height: 220px; padding: var(--space-5) var(--space-4); }
  .field-inline { width: 100%; }
  .field-inline .select { flex: 1 1 0; min-width: 0; width: 100%; max-width: none; }
  .panel-actions .btn { flex: 1 1 auto; }
  .section { padding: var(--space-7) 0; }
  .steps, .steps-4 { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 480px) {
  /* Two-row header: brand + theme toggle, then navigation. */
  :root { --header-h: 96px; }
  .header-inner { height: auto; flex-wrap: wrap; row-gap: 0; padding-top: var(--space-2); }
  .theme-toggle { order: 2; }
  .site-nav { order: 3; width: 100%; justify-content: space-between; border-top: 1px solid var(--border); padding: var(--space-1) 0; }
  .site-nav a { padding: var(--space-2) var(--space-1); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); }
  .site-nav a[href="/"] { display: inline-block; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}