/* =============================================
   EMUI.ru — compare.css
   Comparison page: hero, picker, table, radar, diffs, overview
   ============================================= */

/* ---- Screen-reader only ---- */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* =============================================
   COMPARE HERO
   ============================================= */
.compare-hero {
  position: relative;
  padding: calc(var(--header-h) + 3rem) 0 3.5rem;
  overflow: hidden;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}
.compare-hero-bg { position: absolute; inset: 0; pointer-events: none; z-index: 0; }
.ch-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}
.ch-orb-1 {
  width: min(500px, 70vw); height: min(500px, 70vw);
  background: radial-gradient(circle, rgba(167,139,250,0.13) 0%, transparent 70%);
  top: -20%; right: -5%;
}
.ch-orb-2 {
  width: min(300px, 50vw); height: min(300px, 50vw);
  background: radial-gradient(circle, rgba(244,114,182,0.1) 0%, transparent 70%);
  bottom: -10%; left: 10%;
}

.compare-hero .container { position: relative; z-index: 1; }

.breadcrumb { margin-bottom: 1.5rem; }
.breadcrumb ol {
  display: flex; align-items: center; gap: 0.5rem;
  list-style: none; flex-wrap: wrap;
}
.breadcrumb li { display: flex; align-items: center; gap: 0.5rem; }
.breadcrumb a {
  font-size: 0.82rem; color: var(--color-text-muted);
  transition: color 0.18s;
}
.breadcrumb a:hover { color: var(--color-accent-blue); }
.breadcrumb i { font-size: 0.55rem; color: var(--color-text-muted); }
.breadcrumb [aria-current="page"] { font-size: 0.82rem; color: var(--color-text-secondary); font-weight: 500; }

.compare-hero-content { max-width: 680px; }

.compare-page-title {
  font-family: 'Sora', sans-serif;
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 1rem;
  color: var(--color-text-primary);
}

.compare-page-sub {
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 560px;
}

/* =============================================
   VERSION PICKER
   ============================================= */
.picker-section {
  padding: 2.5rem 0 0;
  background: var(--color-bg-alt);
}

.picker-wrap {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 1.75rem 2rem;
  box-shadow: var(--shadow-md);
}

.picker-header {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.picker-title {
  font-family: 'Sora', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
}
.picker-hint {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.version-pills {
  display: flex;
  gap: 0.65rem;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
}

.version-pill {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 0.6rem 1.1rem 0.55rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-border);
  background: var(--color-bg-alt);
  cursor: pointer;
  transition: all 0.2s ease;
  user-select: none;
  min-width: 72px;
}
.version-pill:hover {
  border-color: var(--color-accent-violet);
  background: rgba(167,139,250,0.06);
  transform: translateY(-2px);
}
.version-pill.selected {
  border-color: var(--color-accent-violet);
  background: linear-gradient(135deg, rgba(244,114,182,0.08), rgba(167,139,250,0.1), rgba(96,165,250,0.08));
  box-shadow: 0 4px 14px rgba(167,139,250,0.2);
  transform: translateY(-2px);
}
.version-pill.disabled {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}
.pill-num {
  font-family: 'Sora', sans-serif;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-text-secondary);
  line-height: 1;
  transition: color 0.2s;
}
.version-pill.selected .pill-num {
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.pill-year {
  font-size: 0.65rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  line-height: 1;
}
.pill-check {
  position: absolute;
  top: -6px; right: -6px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--gradient-logo);
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity 0.2s, transform 0.2s;
}
.version-pill.selected .pill-check {
  opacity: 1;
  transform: scale(1);
}
.pill-check i { font-size: 0.55rem; color: #fff; }
.pill-latest-badge {
  position: absolute;
  bottom: -8px;
  left: 50%; transform: translateX(-50%);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--gradient-logo);
  color: #fff;
  padding: 0.1rem 0.45rem;
  border-radius: 50px;
  white-space: nowrap;
}

.picker-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}
.pick-action-btn {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-family: 'Sora', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  border-radius: 50px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.18s;
}
.pick-action-btn:hover {
  background: var(--color-surface-hover);
  color: var(--color-accent-blue);
  border-color: var(--color-accent-blue);
  transform: translateY(-1px);
}
.pick-action-btn i { font-size: 0.72rem; }
.picker-counter {
  margin-left: auto;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.picker-counter strong { color: var(--color-accent-violet); }

/* =============================================
   TABLE SECTION
   ============================================= */
.table-section {
  padding: 2.5rem 0 4rem;
  background: var(--color-bg-alt);
}

/* ---- Empty state ---- */
.empty-state {
  text-align: center;
  padding: 5rem 1.5rem;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  background: var(--color-bg);
}
.empty-icon {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--color-surface);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.25rem;
}
.empty-icon i { font-size: 1.8rem; color: var(--color-text-muted); }
.empty-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.35rem; font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
}
.empty-sub {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 340px;
  margin-inline: auto;
  line-height: 1.6;
}

/* ---- Comparison content ---- */
.comparison-content { animation: fadeIn 0.4s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ---- Version header row (sticky) ---- */
.compare-header-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  position: sticky;
  top: calc(var(--header-h) + 0.5rem);
  z-index: 50;
  background: var(--color-bg-alt);
  padding: 0.75rem 0;
}
.compare-version-head {
  flex: 1;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.compare-version-head::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-logo);
  opacity: 0;
  transition: opacity 0.3s;
}
.compare-version-head.is-latest::before { opacity: 1; }
.cvh-version {
  font-family: 'Sora', sans-serif;
  font-size: 1.4rem; font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.cvh-year {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.cvh-android {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  margin-top: 0.1rem;
}
.cvh-badge {
  position: absolute;
  top: 8px; right: 10px;
  font-family: 'Sora', sans-serif;
  font-size: 0.58rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--gradient-logo);
  color: #fff;
  padding: 0.15rem 0.55rem;
  border-radius: 50px;
}
.cvh-link {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.72rem; font-weight: 600;
  color: var(--color-accent-blue);
  margin-top: 0.35rem;
  transition: gap 0.2s;
  align-self: flex-start;
}
.cvh-link:hover { gap: 0.5rem; }
.cvh-link i { font-size: 0.6rem; }

/* ---- Diff toggle ---- */
.diff-toggle-wrap {
  display: flex; align-items: center; gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}
.diff-toggle-label {
  display: flex; align-items: center; gap: 0.65rem;
  font-size: 0.85rem; font-weight: 500;
  color: var(--color-text-secondary);
  cursor: pointer;
  user-select: none;
}
.diff-toggle-label input { position: absolute; opacity: 0; width: 0; height: 0; }
.diff-toggle-track {
  position: relative;
  width: 36px; height: 20px;
  background: var(--color-border-strong);
  border-radius: 50px;
  transition: background 0.2s;
  flex-shrink: 0;
}
.diff-toggle-label:has(input:checked) .diff-toggle-track { background: var(--color-accent-violet); }
.diff-toggle-thumb {
  position: absolute;
  top: 2px; left: 2px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: #fff;
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}
.diff-toggle-label:has(input:checked) .diff-toggle-thumb { transform: translateX(16px); }
.diff-count {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  font-weight: 500;
}
.diff-count strong { color: var(--color-accent-coral); }

/* ---- Compare table ---- */
.compare-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  margin-bottom: 3rem;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-bg);
  min-width: 600px;
}
.compare-table thead tr {
  background: var(--color-bg-alt);
}
.compare-table th {
  padding: 0.85rem 1rem;
  text-align: left;
  font-family: 'Sora', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}
.compare-table th:first-child {
  min-width: 200px;
  position: sticky;
  left: 0;
  background: var(--color-bg-alt);
  z-index: 2;
}
.compare-table th.col-version {
  min-width: 140px;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 0.85rem;
  font-weight: 800;
}
.compare-table td {
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
  vertical-align: middle;
  transition: background 0.15s;
}
.compare-table td:first-child {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.85rem;
  position: sticky;
  left: 0;
  background: var(--color-bg);
  z-index: 1;
}
.compare-table tr:last-child td { border-bottom: none; }
.compare-table tbody tr:hover td { background: var(--color-surface); }
.compare-table tbody tr:hover td:first-child { background: var(--color-surface); }

/* Category row */
.compare-table tr.cat-row td {
  background: var(--color-bg-alt) !important;
  font-family: 'Sora', sans-serif;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.55rem 1rem;
  border-top: 1px solid var(--color-border);
}

/* Diff highlighted row */
.compare-table tr.is-diff td:not(:first-child) {
  background: rgba(167,139,250,0.05);
}
.compare-table tr.is-diff td:first-child::after {
  content: ' ·';
  color: var(--color-accent-violet);
}

/* Hidden diff row */
.compare-table tr.hide-nodiff { display: none; }

/* Cell value types */
.cell-yes { color: var(--color-accent-teal); font-weight: 600; }
.cell-no { color: var(--color-text-muted); }
.cell-partial { color: #F59E0B; font-weight: 500; }
.cell-badge {
  display: inline-flex;
  padding: 0.2rem 0.55rem;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
  white-space: nowrap;
}
.cell-badge.badge-new { background: rgba(45,212,191,0.12); color: var(--color-accent-teal); }
.cell-badge.badge-improved { background: rgba(167,139,250,0.12); color: var(--color-accent-violet); }
.cell-badge.badge-removed { background: rgba(251,113,133,0.12); color: var(--color-accent-coral); }
.cell-score {
  display: flex; align-items: center; gap: 0.5rem;
}
.score-bar {
  flex: 1; height: 5px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
  max-width: 80px;
}
.score-fill {
  height: 100%;
  border-radius: 3px;
  background: var(--gradient-logo);
  transition: width 0.6s ease;
}
.score-num {
  font-family: 'Sora', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-text-primary);
  min-width: 20px;
  text-align: right;
}

/* =============================================
   RADAR CHART
   ============================================= */
.radar-section {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  margin-bottom: 3rem;
}
.radar-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.2rem; font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 0.3rem;
}
.radar-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}
.radar-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}
#radarChart { max-width: 100%; }
.radar-legend {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.radar-legend-item {
  display: flex; align-items: center; gap: 0.6rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}
.radar-legend-dot {
  width: 12px; height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* =============================================
   KEY DIFFERENCES
   ============================================= */
.diffs-section {
  margin-bottom: 3rem;
}
.diffs-title {
  font-family: 'Sora', sans-serif;
  font-size: 1.2rem; font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 1.25rem;
}
.diffs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.diff-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
  animation: fadeIn 0.35s ease both;
}
.diff-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-strong);
}
.diff-card-header {
  display: flex; align-items: center; gap: 0.55rem;
  margin-bottom: 0.5rem;
}
.diff-card-icon {
  width: 30px; height: 30px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.diff-card-icon i { font-size: 0.8rem; }
.diff-card-label {
  font-family: 'Sora', sans-serif;
  font-size: 0.82rem; font-weight: 700;
  color: var(--color-text-primary);
}
.diff-card-values {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-top: 0.4rem;
}
.diff-val {
  display: flex; align-items: baseline; gap: 0.5rem;
  font-size: 0.8rem;
}
.diff-val-ver {
  font-family: 'Sora', sans-serif;
  font-size: 0.7rem; font-weight: 700;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
  min-width: 52px;
}
.diff-val-text { color: var(--color-text-secondary); line-height: 1.4; }

/* =============================================
   ALL VERSIONS OVERVIEW
   ============================================= */
.overview-section {
  padding: clamp(4rem, 8vw, 6rem) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}
.overview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}
.overview-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
  cursor: pointer;
}
.overview-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent-violet);
}
.ov-number {
  font-family: 'Sora', sans-serif;
  font-size: 2rem; font-weight: 800;
  letter-spacing: -0.03em;
  background: var(--gradient-logo);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.ov-meta {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.25rem;
}
.ov-headline {
  font-family: 'Sora', sans-serif;
  font-size: 0.9rem; font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.3;
}
.ov-desc {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  flex: 1;
}
.ov-tags {
  display: flex; flex-wrap: wrap; gap: 0.3rem;
  margin-top: 0.25rem;
}
.ov-tag {
  font-size: 0.65rem; font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 50px;
  background: var(--color-surface);
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
}
.ov-link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  font-family: 'Sora', sans-serif;
  font-size: 0.75rem; font-weight: 600;
  color: var(--color-accent-blue);
  margin-top: 0.5rem;
  transition: gap 0.18s;
}
.ov-link:hover { gap: 0.55rem; }
.ov-link i { font-size: 0.65rem; }
.ov-latest-ribbon {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.6rem; font-weight: 700;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: var(--gradient-logo);
  color: #fff;
  padding: 0.2rem 0.6rem;
  border-radius: 50px;
  align-self: flex-start;
}

/* =============================================
   FOOTER (reuse from components.css)
   ============================================= */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: clamp(3rem, 6vw, 5rem) 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem clamp(1.5rem, 3vw, 3rem);
  margin-bottom: 3rem;
}
.footer-brand {}
.footer-logo { display: inline-flex; margin-bottom: .85rem; transition: opacity .2s; }
.footer-logo:hover { opacity: .8; }
.footer-tagline { font-size: .85rem; color: var(--color-text-muted); line-height: 1.6; max-width: 280px; }
.footer-nav-title { font-family: 'Sora',sans-serif; font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: 1rem; }
.footer-nav ul { display: flex; flex-direction: column; gap: .55rem; list-style: none; }
.footer-nav a { font-size: .88rem; color: var(--color-text-secondary); transition: color .18s, padding-left .18s; display: inline-flex; align-items: center; gap: .35rem; }
.footer-nav a:hover { color: var(--color-accent-blue); padding-left: 4px; }
.footer-nav a i { font-size: .65rem; opacity: .6; }
.footer-bottom { border-top: 1px solid var(--color-border); padding: 1.25rem 0; display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.footer-copy { font-size: .82rem; color: var(--color-text-muted); font-weight: 500; }
.footer-disclaimer { font-size: .75rem; color: var(--color-text-muted); opacity: .7; max-width: 480px; text-align: right; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  .compare-header-row { position: static; flex-direction: column; }
  .picker-wrap { padding: 1.25rem; }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-disclaimer { text-align: center; }
  .overview-grid { grid-template-columns: 1fr 1fr; }
  .diffs-grid { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
  .overview-grid { grid-template-columns: 1fr; }
}