:root {
  --bg: #0a0c14;
  --bg-card: #13161f;
  --bg-card-hover: #1a1e2b;
  --bg-input: #0e1019;
  --border: #1f2333;
  --border-focus: #6c8aff;
  --accent: #6c8aff;
  --accent-hover: #8ba3ff;
  --accent-glow: rgba(108,138,255,.25);
  --green: #34d399;
  --green-hover: #5eead4;
  --green-glow: rgba(52,211,153,.2);
  --red: #f87171;
  --text: #e8ebf4;
  --text-muted: #8b90a8;
  --text-dim: #4e5268;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 4px 32px rgba(0,0,0,.4);
  --shadow-lg: 0 12px 48px rgba(0,0,0,.5);
  --transition: .2s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --header-bg: rgba(10,12,20,.8);
}

[data-theme="light"] {
  --bg: #f5f6fa;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f1f5;
  --bg-input: #f8f9fb;
  --border: #dce0e8;
  --border-focus: #5570e6;
  --accent: #5570e6;
  --accent-hover: #3d56d0;
  --accent-glow: rgba(85,112,230,.2);
  --green: #22b07d;
  --green-hover: #1a9068;
  --green-glow: rgba(34,176,125,.15);
  --red: #e05252;
  --text: #1a1d2e;
  --text-muted: #5c6178;
  --text-dim: #9ca0b4;
  --shadow: 0 4px 24px rgba(0,0,0,.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.1);
  --header-bg: rgba(245,246,250,.85);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ── Header ──────────────────────────────────────────── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 32px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: -.01em;
}

.logo-icon { color: var(--accent); flex-shrink: 0; }

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  text-decoration: none;
  font-size: .78rem;
  font-weight: 500;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text);
  background: rgba(108,138,255,.08);
}

.nav-link.active {
  color: var(--accent);
  background: rgba(108,138,255,.12);
}

.nav-item {
  position: relative;
}

.sub-arrow {
  font-size: .6em;
  opacity: .45;
  margin-left: 1px;
  transition: transform .2s ease, opacity .2s ease;
}

.nav-item.has-sub:hover .sub-arrow {
  transform: rotate(180deg);
  opacity: .85;
}

.sub-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 4px 0;
  min-width: 190px;
  z-index: 1000;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  backdrop-filter: blur(12px);
}

.nav-item.has-sub::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 8px;
  display: none;
}

.nav-item.has-sub:hover::after {
  display: block;
}

.nav-item.has-sub:hover .sub-menu,
.nav-item.has-sub.open .sub-menu {
  display: block;
}

.sub-menu a {
  display: block;
  padding: 8px 14px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: .78rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color .15s, background .15s;
}

.sub-menu a:hover {
  color: var(--text);
  background: rgba(108,138,255,.08);
}

.sub-menu a.active {
  color: var(--accent);
  background: rgba(108,138,255,.1);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Hero ────────────────────────────────────────────── */
.main { flex: 1; padding-bottom: 80px; }

.hero {
  text-align: center;
  padding: 64px 0 40px;
}

.hero h1 {
  font-size: clamp(1.85rem, 5vw, 3rem);
  font-weight: 900;
  letter-spacing: -.03em;
  line-height: 1.15;
  background: linear-gradient(135deg, var(--text) 0%, var(--accent) 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 520px;
  margin-inline: auto;
  line-height: 1.65;
}

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 24px;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(52,211,153,.08);
  border: 1px solid rgba(52,211,153,.15);
  color: var(--green);
  font-size: .82rem;
  font-weight: 600;
  letter-spacing: .01em;
}

/* ── Drop Zone ───────────────────────────────────────── */
.drop-zone {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 60px 24px;
  text-align: center;
  cursor: pointer;
  transition: border-color .3s ease, background .3s ease, transform .3s ease, box-shadow .3s ease;
  outline: none;
  overflow: hidden;
}

.drop-zone::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  padding: 2px;
  background: conic-gradient(from 0deg, var(--accent), #a78bfa, var(--green), var(--accent));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity .4s ease;
  pointer-events: none;
}

.drop-zone:hover::before,
.drop-zone:focus-visible::before {
  opacity: 1;
  animation: rotateBorder 3s linear infinite;
}

.drop-zone:hover {
  border-color: transparent;
  background: rgba(108,138,255,.04);
}

.drop-zone:focus-visible {
  border-color: transparent;
  background: rgba(108,138,255,.04);
}

.drop-zone.drag-over {
  border-color: transparent;
  background: rgba(108,138,255,.08);
  transform: scale(1.01);
  box-shadow: 0 0 40px var(--accent-glow);
}

.drop-zone.drag-over::before {
  opacity: 1;
  animation: rotateBorder 1.5s linear infinite;
}

@keyframes rotateBorder {
  to { transform: rotate(360deg); }
}

.drop-icon {
  color: var(--text-dim);
  margin-bottom: 14px;
  transition: color .3s ease, transform .3s ease;
}

.drop-zone:hover .drop-icon { color: var(--accent); transform: translateY(-4px); }

.drop-text {
  font-size: 1.15rem;
  font-weight: 700;
}

.drop-subtext {
  color: var(--text-muted);
  font-size: .88rem;
  margin-top: 6px;
}

.drop-formats {
  color: var(--text-dim);
  font-size: .75rem;
  margin-top: 14px;
  letter-spacing: .03em;
  text-transform: uppercase;
}

/* ── Editing label ───────────────────────────────────── */
.editing-label {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  background: rgba(108,138,255,.06);
  border: 1px solid rgba(108,138,255,.12);
  color: var(--text-muted);
  font-size: .8rem;
  font-weight: 500;
}

.editing-label strong {
  color: var(--accent);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 320px;
}

/* ── Controls Panel ──────────────────────────────────── */
.controls-panel {
  margin-top: 36px;
  animation: fadeUp .5s cubic-bezier(.22,1,.36,1) both;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.control-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.control-card:hover {
  border-color: rgba(108,138,255,.25);
  box-shadow: 0 0 20px rgba(108,138,255,.05);
}

.control-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.control-card-header h3 { margin-bottom: 0; }

.control-card h3 {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--text-dim);
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--text-muted), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-reset {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font);
  font-size: .7rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-reset:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(108,138,255,.08);
}

.original-dims {
  margin-top: 10px;
  font-size: .73rem;
  color: var(--text-dim);
}

/* Slider */
.slider-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.slider {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-card);
  box-shadow: 0 0 0 2px var(--accent), 0 2px 8px var(--accent-glow);
  cursor: grab;
  transition: transform var(--transition), box-shadow var(--transition);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 0 2px var(--accent), 0 2px 16px var(--accent-glow);
}

.slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-card);
  box-shadow: 0 0 0 2px var(--accent);
  cursor: grab;
}

.slider-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  min-width: 48px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.card-size-warning,
.compare-warning {
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: rgba(108,138,255,.06);
  border: 1px solid rgba(108,138,255,.15);
  color: var(--text-muted);
  color: var(--red);
  font-size: .73rem;
  line-height: 1.5;
  animation: fadeIn .3s ease;
}

.compare-warning {
  text-align: center;
  margin-top: 16px;
}

/* Target size */
.target-size-group { margin-top: 14px; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.checkbox-label input { display: none; }

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-radius: 5px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

.checkbox-label input:checked + .checkbox-custom {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

.checkbox-label input:checked + .checkbox-custom::after {
  content: '';
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg) translateY(-1px);
}

.target-input-wrap {
  display: flex;
  gap: 8px;
  margin-top: 10px;
}

/* Inputs */
.input-field {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 9px 12px;
  font-size: .88rem;
  font-family: var(--font);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.input-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-sm { max-width: 90px; }

.select-field {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 9px 10px;
  font-size: .88rem;
  font-family: var(--font);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
}

.select-field:focus { border-color: var(--accent); }

.select-sm { max-width: 72px; }

/* Resize */
.resize-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dimension-input {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.dimension-input label {
  font-size: .78rem;
  color: var(--text-dim);
  font-weight: 600;
}

.dimension-input .unit {
  font-size: .75rem;
  color: var(--text-dim);
}

.aspect-lock {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  padding: 6px;
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.aspect-lock:hover { border-color: var(--text-muted); color: var(--text-muted); }

.aspect-lock.active {
  color: var(--accent);
  border-color: var(--accent);
  background: rgba(108,138,255,.1);
  box-shadow: 0 0 8px var(--accent-glow);
}

/* Format buttons */
.format-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.format-btn {
  flex: 1 1 0;
  min-width: 54px;
  padding: 10px 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.format-btn:hover {
  border-color: var(--text-muted);
  color: var(--text);
  background: var(--bg-card-hover);
}

.format-btn.active {
  background: rgba(108,138,255,.12);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ── Batch Actions ───────────────────────────────────── */
.batch-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.batch-info {
  font-size: .88rem;
  color: var(--text-muted);
  margin-right: auto;
  font-weight: 500;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  border: none;
  font-family: var(--font);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn:disabled { opacity: .35; cursor: not-allowed; }

.btn-accent {
  background: linear-gradient(135deg, var(--accent), #8b6cf8);
  color: #fff;
  box-shadow: 0 2px 12px var(--accent-glow);
}

.btn-accent:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-hover), #a78bfa);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-glow);
}

.btn-green {
  background: linear-gradient(135deg, var(--green), #2dd4bf);
  color: #0a0c14;
}

.btn-green:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--green-hover), #5eead4);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--green-glow);
}

.btn-sm {
  padding: 7px 14px;
  font-size: .78rem;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  box-shadow: none;
}

.btn-outline:hover:not(:disabled) { border-color: var(--text-muted); color: var(--text); }

/* ── Results layout + Sidebar ────────────────────────── */
.results-layout {
  display: flex;
  gap: 20px;
  margin-top: 32px;
  align-items: flex-start;
}

.results-layout[hidden] { display: none; }

.sidebar {
  width: 240px;
  flex-shrink: 0;
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.sidebar[hidden] { display: none; }

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
}

.sidebar-item:hover { background: rgba(108,138,255,.06); }

.sidebar-item.active {
  background: rgba(108,138,255,.1);
  box-shadow: inset 3px 0 0 var(--accent);
}

.sidebar-thumb {
  width: 40px;
  height: 30px;
  border-radius: 5px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg);
}

.sidebar-info { min-width: 0; flex: 1; }

.sidebar-name {
  font-size: .73rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sidebar-settings {
  font-size: .66rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.sidebar-status {
  font-size: .63rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 5px;
  flex-shrink: 0;
}

.sidebar-status.done {
  background: rgba(52,211,153,.1);
  color: var(--green);
}

/* ── Results / Image Cards ───────────────────────────── */
.results-area { flex: 1; min-width: 0; }

.image-cards {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.image-card {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 20px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.image-card.card-entering {
  animation: cardEnter .5s cubic-bezier(.22,1,.36,1) both;
}

@keyframes cardEnter {
  from { opacity: 0; transform: translateY(16px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.image-card:hover {
  border-color: rgba(108,138,255,.2);
  cursor: pointer;
}

.image-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 4px 24px var(--accent-glow);
}

/* ── Card compressing state (skeleton shimmer) ──────── */
.image-card.compressing {
  background: linear-gradient(
    90deg,
    var(--bg-card) 0%,
    var(--bg-card-hover) 40%,
    var(--bg-card) 60%
  );
  background-size: 300% 100%;
  animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
  0%   { background-position: 300% 0; }
  100% { background-position: -300% 0; }
}

/* ── Card success flash ─────────────────────────────── */
.image-card.compress-done {
  animation: successFlash .6s ease;
}

@keyframes successFlash {
  0%   { box-shadow: 0 0 0 0 var(--green-glow); }
  40%  { box-shadow: 0 0 0 6px var(--green-glow), 0 0 30px var(--green-glow); }
  100% { box-shadow: none; }
}

.image-card-settings-badge {
  margin-top: 4px;
  font-size: .7rem;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: .01em;
}

.image-card-thumb {
  width: 120px;
  height: 80px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  background: var(--bg);
  opacity: 0;
  transition: opacity .4s ease;
}

.image-card-thumb.loaded { opacity: 1; }

.image-card-info { min-width: 0; }

.image-card-name {
  font-weight: 600;
  font-size: .92rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  letter-spacing: -.01em;
}

.image-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 6px;
  font-size: .8rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.image-card-meta .saved {
  color: var(--green);
  font-weight: 600;
}

.image-card-meta .size-increase {
  color: var(--text-muted);
  font-weight: 500;
}

.size-bar {
  height: 4px;
  border-radius: 2px;
  background: var(--border);
  margin-top: 10px;
  overflow: hidden;
  max-width: 300px;
}

.size-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--green);
  transition: width .6s cubic-bezier(.22,1,.36,1);
}

.image-card-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  align-items: center;
}

/* ── Success checkmark animation ────────────────────── */
.success-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--green);
  animation: checkPop .4s cubic-bezier(.22,1,.36,1);
  flex-shrink: 0;
}

.success-check svg {
  width: 14px;
  height: 14px;
}

.success-check svg path {
  stroke: #0a0c14;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  stroke-dasharray: 24;
  stroke-dashoffset: 24;
  animation: drawCheck .4s .15s ease forwards;
}

@keyframes checkPop {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes drawCheck {
  to { stroke-dashoffset: 0; }
}

.btn-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all var(--transition);
  flex-shrink: 0;
}

.btn-remove:hover {
  background: rgba(248,113,113,.1);
  border-color: var(--red);
  color: var(--red);
}

/* ── Compare Modal ───────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,.85);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn .2s ease;
}

.modal-overlay[hidden] { display: none; }

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: 100%;
  max-width: 960px;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: modalIn .3s cubic-bezier(.22,1,.36,1);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(20px) scale(.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.modal-close {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
  transition: color var(--transition), transform var(--transition);
}

.modal-close:hover { color: var(--text); transform: scale(1.1); }

.modal-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.compare-side-by-side {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--bg);
  user-select: none;
}

.compare-pane {
  position: relative;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  min-height: 200px;
  max-height: 450px;
}

.compare-pane.panning { cursor: grabbing; }

.compare-pane-inner {
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  will-change: transform;
}

.compare-pane-inner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 450px;
  object-fit: contain;
  pointer-events: none;
}

.compare-divider {
  width: 2px;
  background: var(--border);
  align-self: stretch;
}

.compare-label {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: .7rem;
  font-weight: 600;
  pointer-events: none;
  z-index: 2;
  letter-spacing: .02em;
}

.zoom-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
  padding: 6px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  width: fit-content;
  margin-inline: auto;
}

.zoom-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

.zoom-btn:hover { background: rgba(108,138,255,.1); color: var(--accent); }

.zoom-level {
  font-size: .73rem;
  font-weight: 700;
  color: var(--text);
  min-width: 40px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.zoom-hint {
  font-size: .68rem;
  color: var(--text-dim);
  margin-left: 6px;
  padding-left: 10px;
  border-left: 1px solid var(--border);
}

.compare-stats {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 20px;
}

.stat { text-align: center; }

.stat-label {
  display: block;
  font-size: .7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 500;
}

.stat-value {
  display: block;
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: 4px;
  font-variant-numeric: tabular-nums;
}

/* ── Footer ──────────────────────────────────────────── */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 48px 0;
  text-align: center;
  background: linear-gradient(to top, rgba(108,138,255,.02), transparent);
}

.footer-tagline {
  color: var(--text-muted);
  font-size: .88rem;
  max-width: 600px;
  margin-inline: auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 24px;
}

.footer-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

.footer-copy {
  margin-top: 24px;
  color: var(--text-dim);
  font-size: .75rem;
}

/* ── SEO Content ─────────────────────────────────────── */
.seo-content {
  margin-top: 64px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.seo-content h2 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.seo-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin: 28px 0 10px;
}

.seo-content p {
  color: var(--text-muted);
  font-size: .92rem;
  line-height: 1.75;
  margin-bottom: 16px;
}

.seo-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(108,138,255,.25);
  transition: border-color .2s;
}

.seo-content a:hover {
  border-color: var(--accent);
}

.seo-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: 16px;
}

.seo-content ul li {
  color: var(--text-muted);
  font-size: .92rem;
  line-height: 1.75;
  padding-left: 20px;
  position: relative;
}

.seo-content ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ── PWA / Install Steps ─────────────────────────────── */
.install-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.install-step {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 18px 20px;
  background: rgba(108,138,255,.04);
  border: 1px solid rgba(108,138,255,.1);
  border-radius: var(--radius-sm);
  transition: border-color .2s;
}

.install-step:hover {
  border-color: rgba(108,138,255,.25);
}

.step-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: .85rem;
  border-radius: 50%;
  margin-top: 2px;
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content strong {
  display: block;
  color: var(--text);
  font-size: .95rem;
  margin-bottom: 4px;
}

.step-content p {
  color: var(--text-muted);
  font-size: .88rem;
  line-height: 1.65;
  margin: 0;
}

.key-hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: rgba(108,138,255,.12);
  border: 1px solid rgba(108,138,255,.2);
  border-radius: 4px;
  font-size: .75rem;
  color: var(--accent);
  vertical-align: middle;
  line-height: 1;
}

@media (max-width: 480px) {
  .install-step {
    padding: 14px 16px;
    gap: 12px;
  }
  .step-number {
    width: 28px;
    height: 28px;
    font-size: .8rem;
  }
}

/* ── Related Tools ───────────────────────────────────── */
.related-tools {
  margin-top: 48px;
  margin-bottom: 32px;
}

.related-tools h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-muted);
  text-align: center;
}

.related-tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.related-tool-link {
  display: block;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text);
  font-size: .85rem;
  font-weight: 600;
  transition: all var(--transition);
}

.related-tool-link:hover {
  border-color: var(--accent);
  background: rgba(108,138,255,.06);
  transform: translateY(-2px);
}

.related-tool-link span {
  display: block;
  font-size: .75rem;
  font-weight: 400;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ── Preset Buttons ──────────────────────────────────── */
.preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
  margin-bottom: 4px;
}

.preset-btn {
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-muted);
  font-family: var(--font);
  font-size: .72rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

.preset-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(108,138,255,.08);
}

/* ── Animations ──────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.2);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .6s linear infinite;
  display: inline-block;
}

/* ── Theme Toggle ────────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  cursor: pointer;
  color: var(--text-muted);
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  flex-shrink: 0;
}

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

.theme-icon-sun { display: none; }
.theme-icon-moon { display: block; }

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

/* ── FAQ Section ─────────────────────────────────────── */
.faq-section {
  margin-top: 64px;
}

.faq-section h2 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -.02em;
  margin-bottom: 24px;
  text-align: center;
  background: linear-gradient(135deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition);
}

.faq-item[open] {
  border-color: rgba(108,138,255,.3);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--transition);
}

.faq-question::-webkit-details-marker { display: none; }

.faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--text-muted);
  transition: transform .2s ease;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] .faq-question::after {
  content: '−';
  color: var(--accent);
}

.faq-question:hover { color: var(--accent); }

.faq-answer {
  padding: 0 20px 18px;
}

.faq-answer p {
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.7;
  margin: 0;
}

/* ── Contact Form ────────────────────────────────────── */
.contact-form-section {
  max-width: 560px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: .85rem;
  font-weight: 600;
  color: var(--text);
}

.form-group textarea.input-field {
  resize: vertical;
  min-height: 120px;
  font-family: var(--font);
}

.contact-submit {
  align-self: flex-start;
  padding: 12px 28px;
  font-size: .9rem;
}

.contact-success {
  text-align: center;
  padding: 60px 20px;
}

.contact-success h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green);
  margin: 20px 0 8px;
}

.contact-success p {
  color: var(--text-muted);
  margin-bottom: 28px;
  font-size: .95rem;
}

/* ── Footer Bottom ───────────────────────────────────── */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-contact-link {
  color: var(--accent);
  text-decoration: none;
  font-size: .82rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
  .controls-grid { grid-template-columns: 1fr; }

  .image-card {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px;
  }

  .image-card-thumb { width: 100%; height: 120px; }

  .image-card-actions {
    grid-column: 1 / -1;
    flex-wrap: wrap;
    gap: 6px;
  }

  .image-card-actions .btn {
    font-size: .72rem;
    padding: 7px 12px;
    gap: 5px;
    flex: 1 1 auto;
    justify-content: center;
    min-width: 0;
  }

  .image-card-name { font-size: .82rem; }
  .image-card-meta { font-size: .72rem; gap: 8px; }

  .batch-actions { flex-wrap: wrap; }
  .batch-info { width: 100%; margin-bottom: 8px; }

  .nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    flex-direction: column;
    gap: 2px;
  }

  .nav.open { display: flex; }
  .nav-toggle { display: flex; }

  .sub-menu {
    position: static;
    background: transparent;
    border: none;
    box-shadow: none;
    backdrop-filter: none;
    padding: 2px 0 2px 12px;
    min-width: 0;
    display: none;
  }

  .nav-item.has-sub:hover .sub-menu { display: none; }
  .nav-item.has-sub:hover::after { display: none; }
  .nav-item.has-sub.open .sub-menu { display: block; }
  .hero { padding: 36px 0 24px; }

  .compare-side-by-side { grid-template-columns: 1fr; }
  .compare-divider { width: auto; height: 2px; }
  .zoom-hint { display: none; }
  .compare-stats { gap: 12px; flex-wrap: wrap; }
  .modal { padding: 16px; max-height: 95vh; }
  .modal-overlay { padding: 8px; }
  .compare-pane { max-height: 300px; }
  .compare-pane-inner img { max-height: 300px; }
  .results-layout { flex-direction: column; }

  .sidebar {
    width: 100%;
    position: static;
    max-height: 200px;
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .sidebar-item { flex-shrink: 0; min-width: 160px; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.5rem; }
  .hero-sub { font-size: .92rem; }
  .drop-zone { padding: 40px 16px; }
  .resize-inputs { flex-wrap: wrap; gap: 10px; }
  .aspect-lock { order: 3; }
}