:root {
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafb;
  --text-primary: #1a1a1a;
  --text-secondary: #6b7280;
  --border-color: #e5e7eb;
  --accent-color: #4f46e5;
  --accent-hover: #4338ca;
  --danger-color: #ef4444;
  --danger-hover: #dc2626;
  --success-color: #10b981;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
}

html.dark-mode {
  --bg-primary: #0a0a0a;
  --bg-secondary: #121212;
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --border-color: #2a2a2a;
  --accent-color: #6366f1;
  --accent-hover: #818cf8;
  --danger-color: #ff5555;
  --danger-hover: #ff7777;
  --success-color: #10b981;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 1.25rem 0;
  box-shadow: var(--shadow-lg);
  backdrop-filter: none;
}

header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 {
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin: 0;
}

header .theme-toggle {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
}

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

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

h1 {
  font-size: 1.8rem;
  font-weight: 700;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  padding: 0.5rem 0.75rem;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s;
}

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

/* Navigation */
.tool-nav {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  min-height: 3.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.2s;
  border-bottom: 2px solid transparent;
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.05);
}

.nav-link.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
  background: rgba(99, 102, 241, 0.1);
}

/* Tool search, pinned in the nav bar */
.nav-search {
  position: relative;
  margin-left: auto;
  width: min(380px, 100%);
  padding: 0.5rem 0;
}

.nav-search input {
  width: 100%;
  padding: 0.5rem 3rem 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font: inherit;
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.nav-search input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.nav-search-hint {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  padding: 0 0.4rem;
  border: 1px solid var(--border-color);
  border-radius: 0.3rem;
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.75rem;
  pointer-events: none;
}

.nav-search input:focus + .nav-search-hint {
  display: none;
}

.search-results {
  position: absolute;
  top: calc(100% - 0.25rem);
  left: 0;
  right: 0;
  z-index: 200;
  max-height: 70vh;
  overflow-y: auto;
  list-style: none;
  padding: 0.375rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  box-shadow: var(--shadow-lg);
}

.search-results li[role="option"] a {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.5rem 0.625rem;
  border-radius: 0.4rem;
  color: var(--text-primary);
  text-decoration: none;
}

.search-results li[aria-selected="true"] a {
  background: rgba(99, 102, 241, 0.1);
}

.search-result-icon {
  display: flex;
  flex-shrink: 0;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.4rem;
  background: var(--bg-secondary);
  font-size: 0.9rem;
}

.search-result-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.search-result-name {
  font-size: 0.9rem;
  font-weight: 600;
}

.search-result-desc {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.search-empty {
  padding: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

/* Main content */
main {
  padding: 2rem 0;
  min-height: calc(100vh - 300px);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tab-btn {
  padding: 1rem 1.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: all 0.3s;
}

.tab-btn.active {
  color: var(--accent-color);
  border-bottom-color: var(--accent-color);
}

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

.tab-content {
  display: none;
  animation: fadeIn 0.3s;
}

.tab-content.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Editor */
.editor-section {
  background: var(--bg-secondary);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: var(--shadow-lg);
  border: none;
  backdrop-filter: none;
}

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  /* Fill the viewport, but stay within a sensible band on tall or very large screens */
  height: clamp(420px, calc(100vh - 300px), 880px);
  margin-top: 1.5rem;
}

.split-input {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.split-input-pair {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
  min-height: 0;
}

.split-input-pair label {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.split-input-pair textarea {
  flex: 1;
  min-height: 0;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  resize: none;
  transition: border-color 0.3s;
}

.split-input-pair textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.15);
}

.split-output {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  min-height: 0;
}

.split-output textarea {
  flex: 1;
  min-height: 0;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  resize: none;
  transition: border-color 0.3s;
}

.split-output textarea:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 2px rgba(30, 58, 138, 0.15);
}

.split-output-result {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1rem;
  flex: 1;
  overflow-y: auto;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-primary);
}

#notepad {
  width: 100%;
  height: 400px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.3s;
}

#notepad:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(74, 123, 255, 0.2);
}

textarea {
  scrollbar-width: auto;
  box-shadow: var(--inner-shadow);
}

textarea::-webkit-scrollbar {
  width: 8px;
}

textarea::-webkit-scrollbar-track {
  background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

textarea::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--border-color), #c0b8b0);
  border-radius: 4px;
  box-shadow: var(--inner-shadow);
}

textarea::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--text-secondary), #7a7a76);
}

.editor-toolbar {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  padding: 0.75rem 1.25rem;
  border: 2px solid;
  border-radius: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all 0.3s;
  display: inline-block;
  line-height: 1;
}

.btn-primary {
  background: var(--accent-color);
  color: white;
  border-color: var(--accent-color);
  box-shadow: 0 4px 6px rgba(79, 70, 229, 0.2);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(79, 70, 229, 0.3);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--bg-primary);
  transform: translateY(-1px);
}

/* Stats */
.stats-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.8rem;
  padding: 1.25rem;
  position: sticky;
  top: 1rem;
  box-shadow: var(--shadow-lg);
  z-index: 10;
  backdrop-filter: blur(10px);
  margin-bottom: 1rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.4rem;
  padding: 0.75rem;
  text-align: center;
  box-shadow: var(--shadow);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Share section */
.share-section {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  padding: 1.5rem;
}

.share-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1rem 0;
}

.share-controls input[type="checkbox"] {
  cursor: pointer;
}

.share-controls input[type="password"] {
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

.share-link {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.share-link input {
  flex: 1;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
  header .container {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-inner {
    flex-wrap: wrap;
    padding-top: 0.25rem;
    padding-bottom: 0.5rem;
  }

  .nav-link {
    padding: 0.5rem 0.75rem;
  }

  .nav-search {
    order: 3;
    width: 100%;
    margin-left: 0;
  }

  .nav-search-hint {
    display: none;
  }

  .hero h2 {
    font-size: 1.6rem;
  }

  .field-grid,
  .control-panel {
    grid-template-columns: 1fr;
  }

  #notepad {
    height: 300px;
  }

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

/* Landing page */
.hero {
  padding: 1.5rem 0 2rem;
}

.hero h2 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 0.5rem;
}

.hero p {
  max-width: 640px;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.result-count {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.tool-section {
  margin-bottom: 2.25rem;
}

.tool-section-title {
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
}

.tool-card {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.9rem;
  box-shadow: var(--shadow);
  color: var(--text-primary);
  text-decoration: none;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-color);
  box-shadow: var(--shadow-lg);
}

.tool-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  margin-bottom: 0.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  font-size: 1.25rem;
}

.tool-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
}

.tool-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

.empty-state {
  padding: 2rem;
  border: 1px dashed var(--border-color);
  border-radius: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Tool pages: shared form pieces */
.tool-description {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.tool-description code {
  padding: 0.05rem 0.3rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.3rem;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9em;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.field label {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
}

.field-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.text-input {
  min-width: 0;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  font: inherit;
  font-size: 0.9rem;
}

.text-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

select.text-input {
  cursor: pointer;
}

.control-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 1rem;
  margin-bottom: 1rem;
}

.checkbox-option {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.checkbox-option input {
  width: 1rem;
  height: 1rem;
  accent-color: var(--accent-color);
  cursor: pointer;
}

.segmented {
  display: inline-flex;
}

.segmented .btn {
  border-radius: 0;
  margin-left: -2px;
}

.segmented .btn:first-child {
  margin-left: 0;
  border-radius: 0.5rem 0 0 0.5rem;
}

.segmented .btn:last-child {
  border-radius: 0 0.5rem 0.5rem 0;
}

.btn.active {
  border-color: var(--accent-color);
  background: rgba(99, 102, 241, 0.12);
  color: var(--accent-color);
}

.status {
  min-height: 1.4rem;
  margin: 0.5rem 0 0.75rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.status.error {
  color: var(--danger-color);
}

.output-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 1rem 0 0.75rem;
}

.output-header h3 {
  margin: 0;
  font-size: 1rem;
}

.output-actions {
  display: flex;
  gap: 0.5rem;
}

.output-box {
  width: 100%;
  min-height: 220px;
  padding: 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.9rem;
  resize: vertical;
}

.control-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}

.control-panel .control-row {
  margin-bottom: 0;
}

.control-row-full {
  grid-column: 1 / -1;
  align-items: center;
}

.control-panel input[type="range"] {
  width: 100%;
  accent-color: var(--accent-color);
}

/* Image tools */
.drop-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 220px;
  padding: 2rem;
  border: 2px dashed var(--border-color);
  border-radius: 0.9rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.drop-zone:hover,
.drop-zone:focus-visible,
.drop-zone.dragging {
  outline: none;
  border-color: var(--accent-color);
  background: rgba(99, 102, 241, 0.06);
}

.drop-zone-title {
  font-size: 1.05rem;
  font-weight: 600;
}

.drop-zone-hint {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.image-workspace[hidden],
.drop-zone[hidden] {
  display: none;
}

.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.compare-card {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
}

.compare-card figcaption {
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.compare-card img {
  display: block;
  width: 100%;
  height: 320px;
  object-fit: contain;
  background: repeating-conic-gradient(var(--bg-secondary) 0% 25%, var(--bg-primary) 0% 50%) 50% / 16px 16px;
  border-radius: 0.5rem;
}

.compare-meta {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.crop-stage-wrap {
  display: flex;
  justify-content: center;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  overflow: auto;
}

.crop-stage {
  position: relative;
  max-width: 100%;
  line-height: 0;
  cursor: crosshair;
  touch-action: none;
  user-select: none;
}

.crop-stage img {
  display: block;
  max-width: 100%;
  max-height: 65vh;
  height: auto;
  pointer-events: none;
}

.crop-box {
  position: absolute;
  border: 2px solid var(--accent-color);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.55);
  pointer-events: none;
}

.crop-box[hidden] {
  display: none;
}

@media (max-width: 768px) {
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .compare-card img {
    height: 240px;
  }
}

/* Brand */
.brand {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-tagline {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Hero deck container: a single scrolling row of cards */
.deck {
  display: flex;
  gap: 0.9rem;
  margin-top: 1.5rem;
  padding: 1rem 0.5rem 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.deck::-webkit-scrollbar {
  height: 6px;
}

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

.deck::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 999px;
}

.deck::-webkit-scrollbar-thumb:hover {
  background: var(--accent-color);
}

/* Hero deck: one card image per tool */
.deck-card {
  flex: 0 0 150px;
  display: block;
  border-radius: 0.7rem;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.5);
  transition: transform 0.25s, box-shadow 0.25s;
  scroll-snap-align: start;
}

.deck-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.7rem;
  pointer-events: none;
  user-select: none;
}

.deck-card:hover,
.deck-card:focus-visible {
  outline: none;
  transform: translateY(-8px) rotate(-2deg);
  box-shadow: 0 18px 32px rgba(0, 0, 0, 0.6);
}

@media (prefers-reduced-motion: reduce) {
  .deck-card { transition: none; }
}

/* Category index: row of buttons above the grid */
.category-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.category-index:empty {
  display: none;
}

/* Keep section titles clear of the sticky nav when jumping */
.tool-section {
  scroll-margin-top: 5rem;
}

/* Tighter cards so more fit on screen */
.tool-grid {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.75rem;
}

.tool-card {
  padding: 0.9rem 1rem;
  gap: 0.25rem;
}

.tool-card-icon {
  width: 2rem;
  height: 2rem;
  font-size: 1.05rem;
}

/* Category buttons: pick one to show its tools */
.category-index button.category-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-primary);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.category-chip:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.category-chip[aria-pressed="true"] {
  background: rgba(99, 102, 241, 0.12);
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.category-chip span {
  padding: 0 0.4rem;
  border-radius: 999px;
  background: var(--bg-primary);
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.pick-hint {
  padding: 2rem;
  border: 1px dashed var(--border-color);
  border-radius: 0.75rem;
  color: var(--text-secondary);
  text-align: center;
}

/* Brand: app icon, Cinzel wordmark */
.brand {
  flex-direction: row;
  align-items: center;
  gap: 0.7rem;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

header .brand h1 {
  font-family: 'Cinzel', Georgia, serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

/* Landing headline: same engraved serif as the brand */
.hero h2 {
  font-family: 'Cinzel', Georgia, serif;
  font-weight: 700;
  letter-spacing: 0.03em;
}

/* Responsive: tool layouts stack into one column on smaller screens */
.split-layout > * {
  min-width: 0;
}

/* Large screens: give the tool pages more room instead of a narrow centred column */
@media (min-width: 1600px) {
  .container {
    max-width: 1440px;
  }

  .editor-section {
    padding: 2.5rem;
  }
}

/* JSON formatter: toolbar, status pill and result actions */
.json-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.json-toolbar .segmented .btn {
  min-width: 7rem;
  padding: 0.65rem 1.1rem;
}

.json-indent {
  min-width: 10rem;
}

.json-indent select.text-input {
  padding: 0.65rem 0.75rem;
}

.json-indent select.text-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.json-status {
  display: inline-flex;
  align-self: flex-start;
  align-items: center;
  min-height: 0;
  margin: 0.25rem 0 0;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  background: var(--bg-primary);
  font-size: 0.85rem;
  font-weight: 600;
}

.json-status:empty {
  display: none;
}

.json-status.ok {
  color: var(--success-color);
  border-color: var(--success-color);
}

.json-status.error {
  color: var(--danger-color);
  border-color: var(--danger-color);
  font-weight: 500;
  word-break: break-word;
}

.json-output {
  flex: 1;
  min-height: 0;
}

.split-output .output-header .btn {
  padding: 0.6rem 1rem;
  white-space: nowrap;
}

/* JSON compare: summary chips, difference table and changed-lines view */
.summary {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin: 1.25rem 0 1rem;
}

.summary-chip {
  --chip-color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.9rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-primary);
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.summary-chip::before {
  content: '';
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--chip-color);
}

.summary-chip strong {
  font-size: 1rem;
}

.summary-chip.added { --chip-color: var(--success-color); }
.summary-chip.removed { --chip-color: var(--danger-color); }
.summary-chip.changed { --chip-color: #f59e0b; }
.summary-chip[data-kind="all"] { --chip-color: var(--accent-color); }

.summary-chip:hover {
  border-color: var(--chip-color);
}

.summary-chip[aria-pressed="true"] {
  border-color: var(--chip-color);
  background: color-mix(in srgb, var(--chip-color) 14%, transparent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--chip-color) 25%, transparent);
}

.key-panel h4 {
  margin: 1rem 0 0.5rem;
  font-size: 0.95rem;
}

.key-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
}

.key-list li code {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.4rem;
  font-size: 0.85rem;
}

.diff-table-wrap {
  margin-top: 0.75rem;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  background: var(--bg-primary);
}

.diff-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.diff-table th,
.diff-table td {
  padding: 0.6rem 0.8rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border-color);
}

.diff-table th {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.diff-table tbody tr:last-child td {
  border-bottom: none;
}

.diff-table td code {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.85rem;
  word-break: break-all;
  white-space: pre-wrap;
}

.diff-table tr.row-added td:first-child { box-shadow: inset 3px 0 0 var(--success-color); }
.diff-table tr.row-removed td:first-child { box-shadow: inset 3px 0 0 var(--danger-color); }
.diff-table tr.row-changed td:first-child { box-shadow: inset 3px 0 0 #f59e0b; }

.line-diff {
  max-height: 420px;
  overflow: auto;
  margin-top: 0.75rem;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  white-space: pre;
}

.line-diff > span {
  display: block;
  padding: 0 0.4rem;
  border-radius: 3px;
}

.line-diff .line-added {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success-color);
}

.line-diff .line-removed {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger-color);
}

/* ===== Responsive pass: every tool, from small phones to large monitors ===== */

/* Grid tracks may shrink below their content, so wide children never force sideways scrolling */
.split-layout,
.control-panel,
.field-grid {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
}

.split-layout > *,
.control-panel > *,
.field-grid > * {
  min-width: 0;
}

/* Long URLs and values can break anywhere, so they never push the page sideways */
body {
  overflow-wrap: anywhere;
}

/* Keep canvases, code and long values inside their boxes */
canvas,
pre {
  max-width: 100%;
}

canvas {
  height: auto;
}

pre,
code {
  overflow-wrap: anywhere;
}

.output-header,
.output-actions,
.json-toolbar,
.control-row,
.editor-toolbar {
  min-width: 0;
}

.output-header {
  flex-wrap: wrap;
}

.output-actions {
  flex-wrap: wrap;
  justify-content: flex-end;
}

/* Large screens: scale the type and widen the page instead of leaving empty margins */
@media (min-width: 1920px) {
  html {
    font-size: 17.5px;
  }
}

@media (min-width: 2200px) {
  html {
    font-size: 19px;
  }

  .container {
    max-width: 1760px;
  }
}

/* Small screens: one column everywhere, no fixed-width grids */
@media (max-width: 900px) {
  .split-layout,
  .control-panel,
  .field-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  /* Stop iOS from zooming in when a field is focused */
  input,
  select,
  textarea {
    font-size: 16px;
  }

  .output-actions {
    width: 100%;
    justify-content: stretch;
  }

  .output-actions .btn {
    flex: 1 1 auto;
  }

  .nav-inner {
    flex-wrap: wrap;
    row-gap: 0.25rem;
  }

  .nav-search {
    width: 100%;
    order: 10;
  }

  .qr-wrap {
    max-width: 100%;
    padding: 1rem;
  }
}

/* Touch screens: controls at least 44px tall so they are easy to hit */
@media (pointer: coarse) {
  .btn,
  .nav-link,
  .theme-toggle,
  .summary-chip,
  .category-chip,
  .text-input,
  select.text-input,
  .related-tools a {
    min-height: 44px;
  }

  .segmented .btn {
    min-height: 44px;
  }
}

img,
video,
svg {
  max-width: 100%;
}

@media (max-width: 900px) {
  .split-layout {
    grid-template-columns: 1fr;
    height: auto;
    gap: 1.25rem;
  }

  .split-layout textarea,
  .split-layout .split-output-result {
    min-height: 200px;
    flex: none;
  }

  .split-input-pair {
    flex: none;
  }

  .control-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 14px;
  }

  .editor-section {
    padding: 1.25rem;
    border-radius: 0.75rem;
  }

  .tabs {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .tabs::-webkit-scrollbar {
    display: none;
  }

  .tab-btn {
    flex: none;
    padding: 0.75rem 1rem;
    white-space: nowrap;
  }

  .output-header {
    flex-wrap: wrap;
  }

  .control-row {
    align-items: stretch;
  }

  .control-row > * {
    flex: 1 1 100%;
  }

  .segmented {
    width: 100%;
  }

  .segmented .btn {
    flex: 1;
  }

  .editor-toolbar .btn,
  .output-actions .btn {
    flex: 1 1 auto;
    text-align: center;
  }

  .hero h2 {
    font-size: 1.5rem;
  }

  .category-index {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .category-index button.category-chip {
    flex: none;
    white-space: nowrap;
  }

  .compare-card img {
    height: 200px;
  }

  .drop-zone {
    min-height: 170px;
    padding: 1.25rem;
  }
}

@media (max-width: 640px) {
  .field-grid {
    grid-template-columns: 1fr;
  }
}

/* Phone header: logo and theme button stay on one row */
@media (max-width: 640px) {
  header .container {
    flex-direction: row;
  }
}

/* Request a tool */
.search-request {
  color: var(--accent-color);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.search-request:hover {
  text-decoration: underline;
}

.request-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 640px;
}

.required {
  color: var(--danger-color);
}

.optional,
.counter {
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 400;
}

.empty-state p {
  margin-top: 0.75rem;
}

/* Footer: centered, sits at the bottom of the page */
.site-footer {
  margin-top: 3rem;
  padding: 2.25rem 1.25rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  color: var(--text-secondary);
  text-align: center;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
}

.footer-made {
  font-size: 0.95rem;
}

.footer-made strong {
  color: var(--text-primary);
  font-family: 'Cinzel', Georgia, serif;
  letter-spacing: 0.04em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-primary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s;
}

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

@media (max-width: 640px) {
  .footer-links a {
    word-break: break-all;
  }
}

.hero-note {
  display: block;
  margin-top: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* SEO guide section under each tool */
.seo-guide {
  margin-top: 2.5rem;
  padding: 1.75rem 1.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 0.9rem;
}

.seo-guide h2 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.guide-steps {
  margin: 0 0 1.25rem 1.25rem;
  color: var(--text-secondary);
}

.guide-steps li {
  margin-bottom: 0.4rem;
}

.faq-item {
  margin-bottom: 0.9rem;
}

.faq-item h3 {
  font-size: 0.98rem;
  font-weight: 600;
}

.faq-item p {
  color: var(--text-secondary);
  font-size: 0.93rem;
}

.related-title {
  margin: 1.25rem 0 0.5rem;
  font-size: 0.95rem;
}

.related-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
}

.related-tools a {
  display: inline-block;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  color: var(--text-primary);
  font-size: 0.85rem;
  text-decoration: none;
}

.related-tools a:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

/* Theme toggle icon: set in CSS so it is right from the first frame */
.theme-toggle::before {
  content: '🌙';
}

html.dark-mode .theme-toggle::before {
  content: '☀️';
}

/* Shared text card template: used by every tool without its own artwork.
   Same size and frame as the artwork cards, so a deck of mixed cards looks even. */
.deck-card-text {
  --trim: #b9bdc8;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.9rem;
  position: relative;
  box-sizing: border-box;
  aspect-ratio: 338 / 471;
  padding: 1.25rem 0.9rem;
  border: 2px solid var(--trim);
  border-radius: 0.7rem;
  background: radial-gradient(circle at 50% 35%, #2b2b33 0%, #141418 70%);
  color: #f2f2f2;
  text-align: center;
}

.deck-card-text::before {
  content: '';
  position: absolute;
  inset: 7px;
  border: 1px solid var(--trim);
  border-radius: 0.5rem;
  opacity: 0.45;
  pointer-events: none;
}

.deck-medallion-text {
  position: relative;
  z-index: 1;
  width: 92px;
  height: 92px;
  border: 2px solid var(--trim);
  background: radial-gradient(circle, #1d1d22 0%, #0b0b0e 100%);
  box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.8);
}

.deck-card-text .deck-icon {
  font-size: 2rem;
  line-height: 1;
}

.deck-card-text .deck-card-label {
  display: block;
  position: relative;
  z-index: 1;
  font-family: 'Cinzel', Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  text-shadow: 0 1px 3px #000;
}

@media (prefers-reduced-motion: reduce) {
  .deck-card-text { transition: none; }
}

/* Deck card details: artwork cards show no label; no link underline on any card */
.deck-card {
  text-decoration: none;
}

.deck-card:not(.deck-card-text) .deck-card-label {
  display: none;
}

.deck-medallion-text {
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Result boxes for the calculator and converter tools */
.result-box {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.result-box > .stats-grid,
.result-box .stat-card.wide {
  flex: 1 1 260px;
}

.stat-value.small {
  font-size: 1.1rem;
  word-break: break-word;
}

.markdown-preview {
  min-height: 320px;
  padding: 1rem 1.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.markdown-preview h1,
.markdown-preview h2,
.markdown-preview h3 {
  margin: 0.6rem 0 0.4rem;
}

.markdown-preview code {
  padding: 0.05rem 0.3rem;
  background: var(--bg-secondary);
  border-radius: 0.25rem;
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
}

.markdown-preview pre {
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: 0.5rem;
  overflow-x: auto;
}

.markdown-preview a {
  color: var(--accent-color);
}

/* Unit labels keep their case (m, km, fl oz) */
.stat-label.plain-label {
  text-transform: none;
  letter-spacing: 0;
}

/* Expense splitter */
.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.5rem 0 1rem;
}

.chip-x {
  margin-left: 0.35rem;
  padding: 0 0.3rem;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font: inherit;
}

.chip-x:hover {
  color: var(--danger-color);
}

.check-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.75rem;
}

/* QR code display: always on white so it scans in dark mode too */
.qr-wrap {
  display: flex;
  justify-content: center;
  padding: 1.5rem;
  background: #ffffff;
  border-radius: 0.75rem;
  margin: 1rem auto 0;
  width: fit-content;
}

/* Pomodoro */
.pomodoro { text-align: center; padding: 1.5rem 0; }
.pomo-phase { font-size: 1.1rem; color: var(--text-secondary); letter-spacing: 0.08em; text-transform: uppercase; }
.pomo-clock { font-size: clamp(3.5rem, 12vw, 6rem); font-weight: 700; font-variant-numeric: tabular-nums; line-height: 1.1; margin: 0.5rem 0; color: var(--accent-color); }

/* Favicon generator */
.favicon-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 1rem;
}

.favicon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 1rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 0.75rem;
  text-align: center;
}

.favicon-card img {
  background: repeating-conic-gradient(var(--bg-secondary) 0% 25%, var(--bg-primary) 0% 50%) 50% / 16px 16px;
  border-radius: 0.25rem;
}

.favicon-name {
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.85rem;
}

/* Background remover: transparency shown as a checkerboard */
.checker-wrap {
  display: flex;
  justify-content: center;
  padding: 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  background-color: #d9d9d9;
  background-image:
    linear-gradient(45deg, #bdbdbd 25%, transparent 25%),
    linear-gradient(-45deg, #bdbdbd 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #bdbdbd 75%),
    linear-gradient(-45deg, transparent 75%, #bdbdbd 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
  overflow: auto;
}

.checker-wrap canvas {
  max-width: 100%;
  height: auto;
}

/* URL builder and data tools */
.param-row {
  margin-bottom: 0.5rem;
}

/* PDF tools file list */
.file-list {
  list-style: none;
  margin: 0.75rem 0;
  display: grid;
  gap: 0.5rem;
}

.file-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 0.6rem;
  background: var(--bg-primary);
}

.file-name {
  flex: 1 1 200px;
  word-break: break-all;
}

/* Footer partner logo (homepage only) */
.footer-partner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.5rem;
}



/* Header actions: partner badge and theme toggle */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}