/* ── Layout ── */

body {
  background: #1a1a2e;
  color: #e0e0e0;
  font-family: system-ui, sans-serif;
  font-size: var(--step-0);
  padding: var(--space-l);
}

/* Diff view resets body padding — layout handled by sidebar + content */
body:has(.sidebar) {
  padding: 0;
}

/* ── Sidebar ── */

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 14rem;
  background: #151525;
  border-inline-end: 1px solid #2a2a44;
  overflow-y: auto;
  z-index: 100;
  padding: var(--space-s) 0;
}

.sidebar-header {
  padding: var(--space-xs) var(--space-s);
  font-size: var(--step--1);
  font-weight: 600;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.sidebar-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-list.hidden { display: none; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3xs);
  padding: var(--space-3xs) var(--space-s);
  color: #888;
  text-decoration: none;
  font-size: var(--step--2);
  border-inline-start: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  text-transform: capitalize;
}

.sidebar-link:hover {
  color: #ccc;
  background: #1e1e36;
}

.sidebar-link.active {
  color: #fff;
  border-inline-start-color: #5e81ac;
  background: #1e1e36;
}

.sidebar-badge {
  width: 1rem;
  height: 1rem;
  display: inline-grid;
  place-content: center;
  border-radius: 50%;
  margin-inline-start: auto;
  flex-shrink: 0;
}

.sidebar-badge.new { background: #2d6a4f; color: #b7e4c7; }
.sidebar-badge.removed { background: #6a2d2d; color: #e4b7b7; }

/* ── Content ── */

.content {
  margin-inline-start: 14rem;
  padding: var(--space-l);
}

/* ── Toolbar ── */

.toolbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #1a1a2e;
  padding-block-end: var(--space-s);
  margin-block-end: var(--space-l);
  border-bottom: 1px solid #2a2a44;
}

.toolbar h1 {
  color: #fff;
  margin-block-end: var(--space-s);
  font-size: var(--step-2);
}

.toolbar-controls {
  display: flex;
  align-items: center;
  gap: var(--space-l);
  flex-wrap: wrap;
}

/* ── Tabs ── */

.tab-bar {
  display: flex;
  gap: var(--space-3xs);
}

.tab {
  background: none;
  border: 1px solid #333;
  color: #888;
  font-size: var(--step--1);
  padding: var(--space-3xs) var(--space-s);
  cursor: pointer;
  border-radius: 4px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.tab:hover { color: #ccc; border-color: #555; }
.tab.active { color: #fff; background: #2a2a44; border-color: #5e81ac; }
.viewport-group.hidden { display: none; }

/* ── Mode bar ── */

.mode-bar {
  display: flex;
  gap: var(--space-3xs);
}

.mode {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3xs);
  background: none;
  border: 1px solid #333;
  color: #888;
  font-size: var(--step--2);
  padding: var(--space-3xs) var(--space-xs);
  cursor: pointer;
  border-radius: 4px;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.mode:hover { color: #ccc; border-color: #555; }
.mode.active { color: #fff; background: #2a2a44; border-color: #5e81ac; }

.mode svg { flex-shrink: 0; }

/* ── Snapshot cards ── */

.snapshot {
  margin-block-end: var(--space-xl);
  scroll-margin-top: 7rem;
}

.snapshot-header {
  margin-block-end: var(--space-xs);
}

.snapshot h2 {
  margin-block-end: 0;
  color: #ccc;
  font-size: var(--step-1);
  text-transform: capitalize;
}

.snapshot .path {
  display: block;
  margin-block-start: var(--space-3xs);
  margin-block-end: var(--space-s);
  font-size: var(--step--2);
  color: #666;
}

.snapshot img {
  max-width: 100%;
  border: 1px solid #333;
  border-radius: 4px;
  display: block;
  margin-inline: auto;
  cursor: zoom-in;
}

/* ── Labels (new/removed) ── */

.label {
  font-size: var(--step--2);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  vertical-align: middle;
  font-weight: 600;
}

.label.new { background: #2d6a4f; color: #b7e4c7; }
.label.removed { background: #6a2d2d; color: #e4b7b7; }

/* ── Side-by-side mode ── */

.pair {
  display: flex;
  gap: var(--space-s);
}

.side {
  flex: 1;
  min-width: 0;
}

.side h3 {
  margin-block-end: var(--space-xs);
  color: #999;
  font-size: var(--step--1);
  text-transform: uppercase;
  font-weight: 500;
}

.side img {
  max-width: 100%;
  border: 1px solid #333;
  border-radius: 4px;
  display: block;
  margin-inline: auto;
}

.placeholder {
  padding: var(--space-xl);
  text-align: center;
  color: #555;
  border: 1px dashed #333;
  border-radius: 4px;
  font-style: italic;
}

/* ── Slider mode ── */

/* Grid overlay lets both images size naturally — the taller one sets
   the container height, avoiding stretch/crop when dimensions differ. */
.slider-container {
  display: grid;
  overflow: hidden;
  border-radius: 4px;
  border: 1px solid #333;
  cursor: ew-resize;
  user-select: none;
  position: relative;
  margin-inline: auto;
}

.slider-baseline,
.slider-current {
  grid-area: 1 / 1;
}

.slider-baseline img,
.slider-current img {
  display: block;
  width: 100%;
  border: none;
  border-radius: 0;
  cursor: ew-resize;
}

.slider-current {
  clip-path: inset(0 0 0 50%);
}

.slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 3px;
  transform: translateX(-50%);
  z-index: 10;
  pointer-events: auto;
}

.slider-line {
  position: absolute;
  inset: 0;
  background: #5e81ac;
  opacity: 0.8;
}

.slider-grip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 28px;
  height: 40px;
  background: #2a2a44;
  border: 2px solid #5e81ac;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #8faabe;
  cursor: ew-resize;
  pointer-events: auto;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.slider-labels {
  position: absolute;
  bottom: var(--space-xs);
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 0 var(--space-s);
  pointer-events: none;
}

.slider-labels span {
  font-size: var(--step--2);
  color: #999;
  text-transform: uppercase;
  font-weight: 500;
  background: rgba(26, 26, 46, 0.7);
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
}

/* ── Toggle mode ── */

/* Grid overlay lets both images size naturally — the taller one sets
   the container height, avoiding stretch when dimensions differ. */
.toggle-container {
  display: grid;
  position: relative;
  margin-inline: auto;
  border-radius: 4px;
  border: 1px solid #333;
  overflow: hidden;
  cursor: pointer;
}

.toggle-container img {
  grid-area: 1 / 1;
  display: block;
  max-width: 100%;
  border: none;
  border-radius: 0;
  cursor: pointer;
}

.toggle-container[data-showing="baseline"] .toggle-baseline { visibility: visible; }
.toggle-container[data-showing="baseline"] .toggle-current { visibility: hidden; }
.toggle-container[data-showing="current"] .toggle-baseline { visibility: hidden; }
.toggle-container[data-showing="current"] .toggle-current { visibility: visible; }

.toggle-label {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  font-size: var(--step--2);
  color: #ccc;
  text-transform: uppercase;
  font-weight: 600;
  background: rgba(26, 26, 46, 0.8);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  border: 1px solid #444;
  pointer-events: none;
}

/* ── Single image fallback (new/removed in slider/toggle) ── */

.single-image {
  position: relative;
  border-radius: 4px;
  border: 1px solid #333;
  overflow: hidden;
}

.single-image img {
  display: block;
  width: 100%;
  border: none;
  border-radius: 0;
}

.single-label {
  position: absolute;
  top: var(--space-xs);
  right: var(--space-xs);
  font-size: var(--step--2);
  color: #999;
  font-style: italic;
  background: rgba(26, 26, 46, 0.8);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

/* ── Selector snapshots (component captures at 2x) ── */

.snapshot--selector .slider-container,
.snapshot--selector .toggle-container,
.snapshot--selector .single-image {
  max-width: 640px;
}

/* ── Lightbox ── */

.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.92);
  flex-direction: column;
}

.lightbox.open { display: flex; }

.lightbox-chrome {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xs) var(--space-s);
  flex-shrink: 0;
}

.lightbox-title {
  color: #aaa;
  font-size: var(--step--1);
  text-transform: capitalize;
}

.lightbox-close {
  background: none;
  border: none;
  color: #888;
  font-size: var(--step-2);
  cursor: pointer;
  padding: 0 var(--space-3xs);
  line-height: 1;
}

.lightbox-close:hover { color: #fff; }

.lightbox-body {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-s);
  cursor: zoom-out;
  min-height: 0;
}

.lightbox img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 4px;
}

/* ── Keyboard shortcuts hint ── */

.shortcuts-hint {
  position: fixed;
  bottom: var(--space-s);
  right: var(--space-s);
  background: #2a2a44;
  border: 1px solid #3a3a5a;
  border-radius: 6px;
  padding: var(--space-3xs) var(--space-xs);
  font-size: var(--step--2);
  color: #888;
  z-index: 200;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.shortcuts-hint:hover,
.shortcuts-hint.expanded {
  opacity: 1;
}

.shortcuts-hint kbd {
  display: inline-block;
  background: #1a1a2e;
  border: 1px solid #444;
  border-radius: 3px;
  padding: 0 0.3rem;
  font-family: inherit;
  font-size: var(--step--2);
  color: #ccc;
  margin: 0 0.1rem;
  min-width: 1.2rem;
  text-align: center;
}

/* ── Mobile viewport constraints ── */

.viewport-group[data-viewport="mobile"] .pair,
.viewport-group[data-viewport="mobile"] .view-slider,
.viewport-group[data-viewport="mobile"] .view-toggle {
  max-width: 50rem;
  margin-inline: auto;
}

.viewport-group[data-viewport="mobile"] .side img,
.viewport-group[data-viewport="mobile"] .slider-container,
.viewport-group[data-viewport="mobile"] .toggle-container,
.viewport-group[data-viewport="mobile"] .single-image {
  max-width: 375px;
  margin-inline: auto;
}

/* ── Hidden utility ── */

.hidden { display: none !important; }

/* ── Gallery-specific (shared stylesheet) ── */

body > h1 {
  color: #fff;
  margin-block-end: var(--space-l);
}

/* Gallery tab-bar sits at top level */
body > .tab-bar {
  margin-block-end: var(--space-l);
  border-bottom: 1px solid #333;
  padding-block-end: var(--space-xs);
}

/* Gallery images at intrinsic size instead of stretching to fill the
   page. Screenshots are captured at 2x, so cap width at half the
   pixel dimensions (e.g. 1280px capture → 640px display). */
body > .viewport-group .snapshot img {
  max-width: min(100%, 640px);
}

body > .viewport-group[data-viewport="mobile"] .snapshot img {
  max-width: min(100%, 375px);
}