/* ──────────────────────────────────────────────────────────────
   ImageLab v3 — CSS  (dark / light / auto themes)
   Font: Syne + DM Mono
────────────────────────────────────────────────────────────── */

/* ── Dark theme (default) ───────────────────────────────────── */
:root,
[data-theme="dark"] {
  --bg:        #0d0f12;
  --bg2:       #13161c;
  --bg3:       #1a1e26;
  --surface:   #1f2430;
  --surface2:  #252b38;
  --border:    #2e3545;
  --border2:   #3a4257;
  --text:      #e8eaf0;
  --text2:     #8a91a8;
  --text3:     #5a6278;
  --accent:    #5dffb6;
  --accent2:   #3de0a0;
  --accent3:   #1ab87a;
  --warn:      #ffd166;
  --danger:    #ff5e7a;
  --overlay-bg:#000000cc;
  --checker-a: #1a1a1a;
  --checker-b: #2a2a2a;
  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 4px 24px rgba(0,0,0,.5);
  --tr:        .18s cubic-bezier(.4,0,.2,1);
}

/* ── Light theme ────────────────────────────────────────────── */
[data-theme="light"] {
  --bg:        #f5f6fa;
  --bg2:       #ffffff;
  --bg3:       #eef0f6;
  --surface:   #f0f2f8;
  --surface2:  #e8ebf4;
  --border:    #d0d5e8;
  --border2:   #b8bfd6;
  --text:      #1a1d2e;
  --text2:     #4a5068;
  --text3:     #8890aa;
  --accent:    #00a86b;
  --accent2:   #009060;
  --accent3:   #007a50;
  --warn:      #d4820a;
  --danger:    #d63050;
  --overlay-bg:#00000088;
  --checker-a: #cccccc;
  --checker-b: #eeeeee;
  --shadow:    0 4px 24px rgba(0,0,0,.12);
}

/* ── Auto (system) ──────────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  [data-theme="auto"] {
    --bg:        #f5f6fa;
    --bg2:       #ffffff;
    --bg3:       #eef0f6;
    --surface:   #f0f2f8;
    --surface2:  #e8ebf4;
    --border:    #d0d5e8;
    --border2:   #b8bfd6;
    --text:      #1a1d2e;
    --text2:     #4a5068;
    --text3:     #8890aa;
    --accent:    #00a86b;
    --accent2:   #009060;
    --accent3:   #007a50;
    --warn:      #d4820a;
    --danger:    #d63050;
    --overlay-bg:#00000088;
    --checker-a: #cccccc;
    --checker-b: #eeeeee;
    --shadow:    0 4px 24px rgba(0,0,0,.12);
  }
}

/* ── Reset ──────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Syne', sans-serif;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background var(--tr), color var(--tr);
}
body::before {
  content: '';
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(93,255,182,.04) 0%,transparent 60%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(93,255,182,.03) 0%,transparent 60%);
}
[data-theme="light"] body::before,
[data-theme="auto"] body::before { display: none; }

/* ── Header ─────────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  display: flex; align-items: center; gap: 20px;
  padding: 0 28px; height: 62px;
  transition: background var(--tr), border-color var(--tr);
}
.logo { display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;letter-spacing:-.5px;white-space:nowrap; }
.logo-icon { color:var(--accent);font-size:22px; }
.logo em { color:var(--accent);font-style:normal; }

.tab-nav { display:flex;gap:4px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius);padding:4px; }
.tab-btn {
  display:flex;align-items:center;gap:7px;padding:7px 15px;
  border:none;border-radius:var(--radius-sm);background:transparent;
  color:var(--text2);font-family:'Syne',sans-serif;font-size:13px;font-weight:600;
  cursor:pointer;transition:var(--tr);white-space:nowrap;
}
.tab-btn svg { width:14px;height:14px;flex-shrink:0; }
.tab-btn:hover { background:var(--surface);color:var(--text); }
.tab-btn.active { background:var(--accent);color:#0a0d10; }

.header-right { margin-left:auto;display:flex;align-items:center;gap:12px; }

/* Theme switcher */
.theme-switcher {
  display:flex;gap:2px;background:var(--bg3);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:3px;
}
.theme-btn {
  background:none;border:none;border-radius:4px;
  width:28px;height:26px;font-size:14px;cursor:pointer;
  transition:var(--tr);opacity:.5;
}
.theme-btn:hover { opacity:.8;background:var(--surface); }
.theme-btn.active { opacity:1;background:var(--surface2); }

.header-badge {
  font-family:'DM Mono',monospace;font-size:11px;color:var(--text3);
  background:var(--bg3);border:1px solid var(--border);border-radius:4px;padding:2px 8px;
}

/* ── Upload section ─────────────────────────────────────────── */
.upload-section { position:relative;z-index:1;max-width:1100px;margin:36px auto;padding:0 24px; }

.drop-zone {
  border:2px dashed var(--border2);border-radius:16px;background:var(--bg2);
  padding:44px 32px;text-align:center;cursor:pointer;
  transition:var(--tr);position:relative;
}
.drop-zone:hover, .drop-zone.dragover {
  border-color:var(--accent);background:color-mix(in srgb, var(--accent) 4%, var(--bg2));
  box-shadow:0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent);
}
.drop-icon { margin-bottom:18px; }
.drop-icon svg { width:68px;height:68px; }
.drop-main { font-size:16px;font-weight:600;color:var(--text);margin-bottom:8px; }
.pick-link { color:var(--accent);cursor:pointer;text-decoration:underline;text-underline-offset:3px; }
.drop-sub { font-family:'DM Mono',monospace;font-size:11px;color:var(--text3);letter-spacing:.05em; }
#fileInput { display:none; }

.file-list { margin-top:22px; }
.file-list-header { display:flex;align-items:center;justify-content:space-between;margin-bottom:14px; }
.file-list-header span { font-size:12px;font-weight:700;color:var(--text2);text-transform:uppercase;letter-spacing:.08em; }
.btn-ghost {
  background:none;border:1px solid var(--border);color:var(--text2);
  border-radius:var(--radius-sm);padding:5px 13px;font-size:12px;
  font-family:'Syne',sans-serif;cursor:pointer;transition:var(--tr);
}
.btn-ghost:hover { border-color:var(--danger);color:var(--danger); }

.file-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px; }
.file-card {
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:10px;display:flex;flex-direction:column;align-items:center;gap:7px;
  position:relative;overflow:hidden;transition:var(--tr);cursor:pointer;
  animation:cardIn .22s ease both;
}
.file-card:hover { border-color:var(--accent);background:var(--surface2); }
@keyframes cardIn { from{opacity:0;transform:scale(.93)} to{opacity:1;transform:scale(1)} }

.file-thumb { width:76px;height:58px;object-fit:contain;border-radius:4px;background:var(--bg); }
.file-thumb-placeholder {
  width:76px;height:58px;background:var(--bg);border-radius:4px;
  display:flex;align-items:center;justify-content:center;font-size:22px;
}
.file-name { font-size:10px;color:var(--text2);font-family:'DM Mono',monospace;word-break:break-all;text-align:center;max-width:100%;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden; }
.file-meta { font-size:9px;color:var(--text3);font-family:'DM Mono',monospace; }
.file-badge { position:absolute;top:5px;right:5px;background:var(--accent);color:#0a0d10;font-family:'DM Mono',monospace;font-size:9px;font-weight:700;padding:2px 4px;border-radius:3px;text-transform:uppercase; }
.file-remove {
  position:absolute;top:3px;left:3px;background:rgba(255,94,122,.15);border:none;border-radius:50%;
  width:19px;height:19px;color:var(--danger);cursor:pointer;font-size:11px;line-height:1;
  display:none;align-items:center;justify-content:center;
}
.file-card:hover .file-remove { display:flex; }
.has-alpha-indicator { font-size:9px;background:color-mix(in srgb,var(--warn) 15%,transparent);color:var(--warn);border:1px solid color-mix(in srgb,var(--warn) 30%,transparent);border-radius:3px;padding:1px 5px;font-family:'DM Mono',monospace; }

/* ── Preview icon on file card ──────────────────────────────── */
.file-preview-btn {
  position:absolute;bottom:3px;right:3px;background:rgba(93,255,182,.18);
  border:none;border-radius:50%;width:20px;height:20px;cursor:pointer;
  display:none;align-items:center;justify-content:center;font-size:11px;
  color:var(--accent);transition:var(--tr);
}
.file-card:hover .file-preview-btn { display:flex; }

/* ── Panels ─────────────────────────────────────────────────── */
.tab-panel { display:none;position:relative;z-index:1;max-width:1100px;margin:0 auto;padding:0 24px 60px; }
.tab-panel.active { display:block; }
.panel-inner { background:var(--bg2);border:1px solid var(--border);border-radius:16px;padding:34px 38px;transition:background var(--tr),border-color var(--tr); }
.panel-title { font-size:21px;font-weight:800;color:var(--text);margin-bottom:26px;display:flex;align-items:center;gap:11px; }
.panel-title::before { content:'';display:inline-block;width:4px;height:21px;background:var(--accent);border-radius:2px; }

/* ── Format picker ──────────────────────────────────────────── */
.picker-label { font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--text3);margin-bottom:11px; }
.format-grid { display:flex;flex-wrap:wrap;gap:7px;margin-bottom:26px; }
.fmt-btn {
  padding:8px 18px;border:1px solid var(--border2);border-radius:var(--radius-sm);
  background:var(--surface);color:var(--text2);font-family:'DM Mono',monospace;
  font-size:13px;font-weight:500;cursor:pointer;transition:var(--tr);
}
.fmt-btn:hover { border-color:var(--accent);color:var(--text); }
.fmt-btn.active { border-color:var(--accent);background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent);font-weight:700; }
.format-grid.small .fmt-btn { padding:5px 12px;font-size:12px; }

/* ── Alpha warning ──────────────────────────────────────────── */
.alpha-warning {
  display:flex;align-items:flex-start;gap:13px;
  background:color-mix(in srgb,var(--warn) 8%,transparent);
  border:1px solid color-mix(in srgb,var(--warn) 28%,transparent);
  border-radius:var(--radius);padding:15px 18px;margin-bottom:22px;
}
.alpha-warning svg { width:19px;height:19px;color:var(--warn);flex-shrink:0;margin-top:2px; }
.alpha-warning>div strong { display:block;color:var(--warn);font-size:14px;margin-bottom:4px; }
.alpha-warning>div span { font-size:13px;color:var(--text2); }
.alpha-warning em { color:var(--warn);font-style:normal;font-weight:700; }
.alpha-controls { display:flex;align-items:center;gap:9px;margin-top:11px;flex-wrap:wrap; }
.alpha-controls input[type="color"] { width:34px;height:34px;border:2px solid var(--border2);border-radius:var(--radius-sm);cursor:pointer;background:none;padding:2px; }
.alpha-controls input[type="color"]::-webkit-color-swatch-wrapper { padding:0; }
.alpha-controls input[type="color"]::-webkit-color-swatch { border:none;border-radius:3px; }
.alpha-controls span { font-family:'DM Mono',monospace;font-size:12px;color:var(--text2); }
.preset-colors { display:flex;gap:5px; }
.preset-dot { width:20px;height:20px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:var(--tr); }
.preset-dot:hover { border-color:var(--text);transform:scale(1.15); }
.preset-dot.selected { border-color:var(--accent); }

/* ── Action bar ─────────────────────────────────────────────── */
.action-bar { margin:26px 0; }
.btn-primary {
  display:inline-flex;align-items:center;gap:8px;padding:11px 30px;
  background:var(--accent);color:#0a0d10;border:none;border-radius:var(--radius);
  font-family:'Syne',sans-serif;font-size:15px;font-weight:700;cursor:pointer;
  transition:var(--tr);box-shadow:0 0 22px color-mix(in srgb,var(--accent) 22%,transparent);
}
.btn-primary svg { width:17px;height:17px; }
.btn-primary:hover { background:var(--accent2);transform:translateY(-1px);box-shadow:0 0 34px color-mix(in srgb,var(--accent) 36%,transparent); }
.btn-primary:disabled { background:var(--surface2);color:var(--text3);box-shadow:none;cursor:not-allowed;transform:none; }

/* ── Results ────────────────────────────────────────────────── */
.results-area { margin-top:6px; }
.results-header { display:flex;align-items:center;justify-content:space-between;margin-bottom:18px; }
.results-header h3 { font-size:15px;font-weight:700;color:var(--text);display:flex;align-items:center;gap:8px; }
.results-header h3::before { content:'';display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent); }
.btn-zip {
  display:inline-flex;align-items:center;gap:6px;padding:8px 18px;
  background:color-mix(in srgb,var(--accent) 10%,transparent);border:1px solid var(--accent);
  border-radius:var(--radius-sm);color:var(--accent);font-family:'Syne',sans-serif;
  font-size:13px;font-weight:700;cursor:pointer;transition:var(--tr);
}
.btn-zip svg { width:15px;height:15px; }
.btn-zip:hover { background:color-mix(in srgb,var(--accent) 20%,transparent); }

.result-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(195px,1fr));gap:14px; }
.result-card {
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;animation:cardIn .28s ease both;transition:var(--tr);
}
.result-card:hover { border-color:var(--accent3); }
.result-card.error-card { border-color:color-mix(in srgb,var(--danger) 40%,transparent); }
.error-msg { padding:16px;font-size:12px;color:var(--danger);font-family:'DM Mono',monospace; }

/* checkerboard for transparency visibility */
.checker, .result-thumb-wrap {
  background-image:
    linear-gradient(45deg,var(--checker-a) 25%,transparent 25%),
    linear-gradient(-45deg,var(--checker-a) 25%,transparent 25%),
    linear-gradient(45deg,transparent 75%,var(--checker-a) 75%),
    linear-gradient(-45deg,transparent 75%,var(--checker-a) 75%);
  background-size:14px 14px;
  background-position:0 0,0 7px,7px -7px,-7px 0;
  background-color:var(--checker-b);
}
.result-thumb-wrap { height:115px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;cursor:zoom-in; }
.result-thumb { max-width:100%;max-height:100%;object-fit:contain; }

/* zoom icon on hover */
.result-thumb-wrap::after {
  content:'⊕';position:absolute;bottom:6px;right:6px;
  background:rgba(0,0,0,.55);color:#fff;border-radius:4px;
  padding:2px 6px;font-size:13px;opacity:0;transition:var(--tr);
}
.result-thumb-wrap:hover::after { opacity:1; }

.result-info { padding:11px; border-top:1px solid var(--border); }
.result-name { font-family:'DM Mono',monospace;font-size:11px;color:var(--text2);margin-bottom:7px;word-break:break-all;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden; }
.result-stats { display:flex;gap:5px;flex-wrap:wrap;margin-bottom:9px; }
.stat-badge { font-family:'DM Mono',monospace;font-size:10px;padding:2px 7px;border-radius:4px;font-weight:500; }
.dim-badge  { background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);border:1px solid color-mix(in srgb,var(--accent) 25%,transparent); }
.size-badge { background:color-mix(in srgb,var(--text2) 10%,transparent);color:var(--text2);border:1px solid color-mix(in srgb,var(--text2) 20%,transparent); }

.result-actions { display:flex;gap:6px; }
.btn-dl, .btn-cmp {
  display:flex;align-items:center;justify-content:center;gap:5px;
  flex:1;padding:7px 4px;border-radius:var(--radius-sm);
  font-family:'Syne',sans-serif;font-size:11px;font-weight:700;cursor:pointer;
  text-decoration:none;transition:var(--tr);border:none;
}
.btn-dl  { background:color-mix(in srgb,var(--accent) 12%,transparent);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);color:var(--accent); }
.btn-dl:hover  { background:color-mix(in srgb,var(--accent) 22%,transparent); }
.btn-cmp { background:color-mix(in srgb,var(--warn) 12%,transparent);border:1px solid color-mix(in srgb,var(--warn) 30%,transparent);color:var(--warn); }
.btn-cmp:hover { background:color-mix(in srgb,var(--warn) 22%,transparent); }
.btn-dl svg { width:12px;height:12px; }

/* ── Resize inputs ──────────────────────────────────────────── */
.resize-mode-tabs { display:flex;flex-wrap:wrap;gap:6px;margin-bottom:26px; }
.rmode-btn {
  padding:7px 15px;border:1px solid var(--border2);border-radius:20px;
  background:var(--surface);color:var(--text2);font-family:'Syne',sans-serif;
  font-size:13px;font-weight:600;cursor:pointer;transition:var(--tr);
}
.rmode-btn:hover { border-color:var(--accent);color:var(--text); }
.rmode-btn.active { background:color-mix(in srgb,var(--accent) 15%,transparent);border-color:var(--accent);color:var(--accent); }

.resize-inputs { margin-bottom:22px; }
.rinput-group { display:flex;align-items:flex-end;gap:11px;flex-wrap:wrap; }
.rinput-group label { display:flex;flex-direction:column;gap:6px;font-size:11px;font-weight:700;color:var(--text2);text-transform:uppercase;letter-spacing:.06em; }
.rinput-group input[type="number"] {
  width:125px;padding:9px 13px;background:var(--surface);border:1px solid var(--border2);
  border-radius:var(--radius-sm);color:var(--text);font-family:'DM Mono',monospace;font-size:15px;transition:var(--tr);
}
.rinput-group input[type="number"]:focus { outline:none;border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 12%,transparent); }
.link-icon { font-size:17px;margin-bottom:9px;cursor:pointer;user-select:none;transition:var(--tr);opacity:.4; }
.link-icon.locked { opacity:1;color:var(--accent); }
.hint { font-size:12px;color:var(--text3);font-style:italic; }

.format-override { margin-bottom:22px; }
.fo-label { display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text2);cursor:pointer;margin-bottom:13px; }
.fo-label input { width:15px;height:15px;accent-color:var(--accent); }

.presets-row { margin-bottom:26px; }
.preset-grid { display:flex;flex-wrap:wrap;gap:5px; }
.preset-size {
  padding:4px 11px;background:var(--surface);border:1px solid var(--border);border-radius:4px;
  color:var(--text2);font-family:'DM Mono',monospace;font-size:11px;cursor:pointer;transition:var(--tr);
}
.preset-size:hover { border-color:var(--accent);color:var(--accent);background:color-mix(in srgb,var(--accent) 8%,transparent); }

/* ── Info tab ───────────────────────────────────────────────── */
.info-grid { display:grid;grid-template-columns:repeat(auto-fill,minmax(270px,1fr));gap:18px; }
.info-placeholder { grid-column:1/-1;text-align:center;padding:56px;color:var(--text3); }
.info-placeholder svg { width:76px;height:76px;margin-bottom:14px;opacity:.4; }
.info-card { background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;animation:cardIn .22s ease both;cursor:pointer;transition:var(--tr); }
.info-card:hover { border-color:var(--accent); }
.info-card-thumb {
  height:135px;display:flex;align-items:center;justify-content:center;overflow:hidden;position:relative;
  background-image:linear-gradient(45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-a) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-a) 75%);
  background-size:14px 14px;background-position:0 0,0 7px,7px -7px,-7px 0;background-color:var(--checker-b);
}
.info-card-thumb img { max-width:100%;max-height:100%;object-fit:contain; }
.info-card-body { padding:14px; }
.info-card-name { font-size:12px;font-weight:700;color:var(--text);margin-bottom:10px;word-break:break-all; }
.info-row { display:flex;justify-content:space-between;align-items:center;padding:4px 0;border-bottom:1px solid var(--border); }
.info-row:last-child { border-bottom:none; }
.info-key { font-size:11px;color:var(--text3);text-transform:uppercase;letter-spacing:.06em; }
.info-val { font-family:'DM Mono',monospace;font-size:11px;color:var(--accent); }

/* ── LIGHTBOX ───────────────────────────────────────────────── */
.lightbox, .compare-modal {
  position:fixed;inset:0;z-index:500;
  display:flex;align-items:center;justify-content:center;
}
.lb-backdrop {
  position:absolute;inset:0;background:var(--overlay-bg);
  backdrop-filter:blur(6px);
}
.lb-container {
  position:relative;z-index:1;
  background:var(--bg2);border:1px solid var(--border);border-radius:16px;
  width:min(94vw,940px);max-height:92vh;display:flex;flex-direction:column;
  overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.5);
  animation:modalIn .22s ease;
}
@keyframes modalIn { from{opacity:0;transform:scale(.96)} to{opacity:1;transform:scale(1)} }

.lb-toolbar {
  display:flex;align-items:center;justify-content:space-between;padding:14px 18px;
  border-bottom:1px solid var(--border);flex-shrink:0;
}
.lb-title { font-family:'DM Mono',monospace;font-size:12px;color:var(--text2);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-right:12px; }
.lb-toolbar-actions { display:flex;gap:6px; }
.lb-btn {
  display:flex;align-items:center;justify-content:center;
  width:32px;height:32px;border:1px solid var(--border);border-radius:var(--radius-sm);
  background:var(--surface);color:var(--text2);cursor:pointer;text-decoration:none;
  transition:var(--tr);
}
.lb-btn svg { width:15px;height:15px; }
.lb-btn:hover { background:var(--surface2);border-color:var(--accent);color:var(--accent); }

.lb-body {
  flex:1;overflow:hidden;display:flex;/* align-items:center; */min-height:0;position:relative;
  background-image:linear-gradient(45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(-45deg,var(--checker-a) 25%,transparent 25%),linear-gradient(45deg,transparent 75%,var(--checker-a) 75%),linear-gradient(-45deg,transparent 75%,var(--checker-a) 75%);
  background-size:20px 20px;background-position:0 0,0 10px,10px -10px,-10px 0;background-color:var(--checker-b);
}
.lb-img-wrap { flex:1;display:flex;align-items:center;justify-content:center;padding:20px;min-height:320px;max-height:66vh;overflow:hidden; }
.lb-img-wrap img { max-width:100%;max-height:100%;object-fit:contain;border-radius:4px; }
.lb-nav {
  position:absolute;top:50%;transform:translateY(-50%);
  background:rgba(0,0,0,.45);border:none;color:#fff;font-size:32px;
  width:44px;height:60px;display:flex;align-items:center;justify-content:center;
  cursor:pointer;border-radius:var(--radius-sm);transition:var(--tr);z-index:2;
}
.lb-prev { left:8px; }
.lb-next { right:8px; }
.lb-nav:hover { background:rgba(0,0,0,.7); }
.lb-nav:disabled { opacity:.2;cursor:default; }
.lb-meta {
  padding:12px 18px;border-top:1px solid var(--border);flex-shrink:0;
  display:flex;gap:16px;flex-wrap:wrap;
  font-family:'DM Mono',monospace;font-size:11px;color:var(--text2);
}
.lb-meta span strong { color:var(--accent); }

/* ── COMPARE MODAL ──────────────────────────────────────────── */
.compare-modal {
  position: fixed; inset: 0; z-index: 500;
  display: flex; align-items: center; justify-content: center;
}
.cmp-container {
  position: relative; z-index: 1;
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: 16px;
  width: min(97vw, 980px);
  max-height: 95vh;
  display: flex; flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.65);
  animation: modalIn .2s ease;
}

/* Botón separador en toolbar */
.cmp-sep {
  width: 1px; height: 20px;
  background: var(--border);
  margin: 0 2px;
  align-self: center;
  flex-shrink: 0;
}
.cmp-filter-btn { font-size: 14px; }
.cmp-filter-btn.active {
  background: var(--accent);
  color: #0a0d10;
  border-color: var(--accent);
}

/* ── Paneles lado a lado ─────────────────────────────────────── */
.cmp-panels {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  max-height: 42vh;
  overflow: hidden;
}
.cmp-panel-side {
  flex: 1; display: flex; flex-direction: column; min-width: 0;
}
.cmp-panel-side:first-child { border-right: 1px solid var(--border); }
.cmp-panel-label {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 12px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  flex-wrap: wrap; gap: 6px;
}
.cmp-panel-tag {
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .1em; padding: 2px 8px; border-radius: 4px;
  flex-shrink: 0;
}
.orig-tag { background: rgba(93,255,182,.15); color: var(--accent); border: 1px solid rgba(93,255,182,.3); }
.res-tag  { background: rgba(255,209,102,.15); color: var(--warn);  border: 1px solid rgba(255,209,102,.3); }
.cmp-panel-stats {
  display: flex; gap: 10px; flex-wrap: wrap; align-items: center;
  font-family: 'DM Mono', monospace; font-size: 10px; color: var(--text2);
}
.cmp-panel-stats span { color: var(--accent); }
.cmp-panel-stats .sz-down { color: #4adc8a; }
.cmp-panel-stats .sz-up   { color: var(--danger); }

.cmp-panel-img {
  flex: 1; overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  min-height: 120px;
}
.cmp-panel-img img {
  max-width: 100%; max-height: 100%; object-fit: contain;
  transition: filter .25s ease;
}
.cmp-panels-divider {
  width: 36px; flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; color: var(--text3);
  background: var(--bg3);
  border-right: 1px solid var(--border);
}

/* ── Slider section ──────────────────────────────────────────── */
.cmp-slider-section {
  flex-shrink: 0;
  padding: 0;
}
.cmp-slider-label {
  text-align: center;
  padding: 6px;
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text3);
  background: var(--bg3);
  border-bottom: 1px solid var(--border);
}

/*
  ESTRUCTURA DEL SLIDER:
  #cmpWrap (position:relative, overflow:hidden)
    #cmpImgOrig     → absolute inset:0, z-index:1  (fondo completo)
    #cmpImgResWrap  → absolute top:0 left:0, WIDTH=50% por JS, z-index:2
      #cmpImgRes    → dimensiones iguales al wrap, fijadas por JS
    #cmpDivider     → left=50% por JS, z-index:3, draggable
*/
.cmp-wrap {
  position: relative;
  height: 260px;
  overflow: hidden;
  cursor: ew-resize;
  user-select: none;
  background-image:
    linear-gradient(45deg, var(--checker-a) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker-a) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--checker-a) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checker-a) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
  background-color: var(--checker-b);
}
#cmpImgOrig {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
  z-index: 1;
  pointer-events: none;
  display: block;
  transition: filter .25s ease;
}
#cmpImgResWrap {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 50%;
  overflow: hidden;
  z-index: 2;
  pointer-events: none;
}
#cmpImgResWrap img {
  position: absolute;
  top: 0; left: 0;
  object-fit: contain;
  display: block;
  transition: filter .25s ease;
  /* width & height set by JS to match #cmpWrap */
}
.cmp-divider-line {
  position: absolute;
  top: 0; bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 44px;
  z-index: 3;
  cursor: ew-resize;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.cmp-divider-line::before {
  content: '';
  position: absolute; top: 0; bottom: 0;
  left: 50%; transform: translateX(-50%);
  width: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px rgba(0,0,0,.7);
}
.cmp-divider-btn {
  position: relative; z-index: 1;
  background: var(--accent); color: #0a0d10;
  border-radius: 50%; width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px; font-weight: 800;
  box-shadow: 0 2px 14px rgba(0,0,0,.7);
  flex-shrink: 0;
}
.cmp-tag {
  position: absolute; bottom: 10px;
  font-size: 10px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; padding: 3px 9px; border-radius: 4px;
  background: rgba(0,0,0,.65); color: #fff;
  z-index: 4; pointer-events: none;
}
.cmp-tag-l { left: 12px; }
.cmp-tag-r { right: 12px; }

/* Filtros CSS sobre las imágenes */
.filter-bw       { filter: grayscale(1) !important; }
.filter-sepia    { filter: sepia(1) !important; }
.filter-invert   { filter: invert(1) !important; }
.filter-contrast { filter: contrast(2) brightness(0.9) !important; }

/* Zoom en paneles */
.cmp-panel-img.zoomed img { transform-origin: center center; }

/* ── Progress / overlay ─────────────────────────────────────── */
.overlay { position:fixed;inset:0;z-index:400;display:flex;align-items:center;justify-content:center;background:var(--overlay-bg);backdrop-filter:blur(4px); }
.overlay-box { background:var(--bg2);border:1px solid var(--border2);border-radius:16px;padding:38px 56px;text-align:center;box-shadow:var(--shadow);min-width:260px; }
.spinner { width:42px;height:42px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;margin:0 auto 18px;animation:spin 1s linear infinite; }
@keyframes spin { to{transform:rotate(360deg)} }
.overlay-box p { font-size:14px;color:var(--text2);margin-bottom:18px; }
.progress-bar { height:4px;background:var(--border);border-radius:2px;overflow:hidden; }
.progress-fill { height:100%;background:var(--accent);width:0%;transition:width .3s;border-radius:2px; }

/* ── Toast ──────────────────────────────────────────────────── */
.toast-container { position:fixed;bottom:26px;right:26px;display:flex;flex-direction:column;gap:7px;z-index:600; }
.toast { background:var(--surface2);border:1px solid var(--border2);border-radius:var(--radius);padding:11px 16px;font-size:13px;color:var(--text);box-shadow:var(--shadow);animation:toastIn .28s ease;display:flex;align-items:center;gap:9px;min-width:230px; }
.toast.success { border-color:var(--accent); }
.toast.error   { border-color:var(--danger); }
.toast.warn    { border-color:var(--warn); }
.toast-icon { font-size:15px; }
@keyframes toastIn  { from{opacity:0;transform:translateX(18px)} to{opacity:1;transform:translateX(0)} }
@keyframes toastOut { from{opacity:1;transform:translateX(0)} to{opacity:0;transform:translateX(18px)} }


/* ── Filtros panel — ajustes con sliders ─────────────────────── */

/* Grid de ajustes */
.filter-adjustments { margin-bottom: 4px; }
.fadj-grid { display: flex; flex-direction: column; gap: 10px; }
.fadj-row {
  display: grid;
  grid-template-columns: 180px 1fr 32px;
  align-items: center;
  gap: 12px;
}
.fadj-label {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--text2);
  user-select: none;
}
.fadj-icon { font-size: 16px; flex-shrink: 0; }
.fadj-name { flex: 1; }
.fadj-val {
  font-family: 'DM Mono', monospace;
  font-size: 11px; color: var(--accent);
  min-width: 38px; text-align: right;
}

/* Slider personalizado */
.fadj-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%; height: 4px;
  border-radius: 2px;
  background: var(--border2);
  outline: none;
  cursor: pointer;
  transition: var(--tr);
}
.fadj-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 1px 6px rgba(0,0,0,.4);
  cursor: grab;
  transition: var(--tr);
}
.fadj-slider::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.2); }
.fadj-slider::-moz-range-thumb {
  width: 18px; height: 18px;
  border-radius: 50%; border: none;
  background: var(--accent);
  box-shadow: 0 1px 6px rgba(0,0,0,.4);
  cursor: grab;
}
.fadj-slider:hover { background: var(--border); }

/* Reset individual */
.fadj-reset {
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text3);
  width: 28px; height: 28px; cursor: pointer;
  font-size: 14px; display: flex; align-items: center; justify-content: center;
  transition: var(--tr); flex-shrink: 0;
}
.fadj-reset:hover { border-color: var(--accent); color: var(--accent); }

/* Presets rápidos */
.filter-presets-grid {
  display: flex; flex-wrap: wrap; gap: 7px;
  margin-bottom: 6px;
}
.fpreset-btn {
  padding: 6px 14px;
  border: 1px solid var(--border2); border-radius: 20px;
  background: var(--surface); color: var(--text2);
  font-family: 'Syne', sans-serif; font-size: 12px; font-weight: 600;
  cursor: pointer; transition: var(--tr);
}
.fpreset-btn:hover { border-color: var(--accent); color: var(--text); background: var(--surface2); }
.fpreset-btn.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}

/* Vista previa */
.filter-preview-row { }
.filter-preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 12px;
}
.filter-prev-card {
  border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; background: var(--surface);
  animation: cardIn .2s ease both;
  cursor: pointer; transition: var(--tr);
  position: relative;
}
.filter-prev-card:hover { border-color: var(--accent); }
.filter-prev-thumb {
  height: 100px;
  background-image:
    linear-gradient(45deg, var(--checker-a) 25%, transparent 25%),
    linear-gradient(-45deg, var(--checker-a) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--checker-a) 75%),
    linear-gradient(-45deg, transparent 75%, var(--checker-a) 75%);
  background-size: 12px 12px;
  background-position: 0 0, 0 6px, 6px -6px, -6px 0;
  background-color: var(--checker-b);
  display: flex; align-items: center; justify-content: center; overflow: hidden;
  position: relative;
}
.filter-prev-thumb img {
  max-width: 100%; max-height: 100%;
  object-fit: contain;
  transition: filter .2s;
}
/* Botón zoom en preview */
.filter-prev-zoom {
  position: absolute; top: 5px; right: 5px;
  background: rgba(0,0,0,.55); color: #fff;
  border: none; border-radius: 4px;
  width: 24px; height: 24px;
  font-size: 13px; cursor: pointer;
  display: none; align-items: center; justify-content: center;
  transition: var(--tr);
  z-index: 2;
}
.filter-prev-card:hover .filter-prev-zoom { display: flex; }
.filter-prev-zoom:hover { background: var(--accent); color: #0a0d10; }

.filter-prev-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 5px 8px;
  border-top: 1px solid var(--border);
}
.filter-prev-name {
  font-family: 'DM Mono', monospace; font-size: 10px; color: var(--text3);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  flex: 1;
}

/* CSS filter utility — se aplica inline por JS, no por clase fija */

/* ── Utils ──────────────────────────────────────────────────── */
[hidden] { display:none !important; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width:768px) {
  .site-header { padding:10px 14px;flex-wrap:wrap;height:auto;gap:10px; }
  .panel-inner { padding:22px 16px; }
  .cmp-body { flex-direction:column; }
  .cmp-divider { width:auto;height:32px;border:none;border-top:1px solid var(--border);border-bottom:1px solid var(--border);flex-direction:row; }
  .result-grid { grid-template-columns:repeat(auto-fill,minmax(155px,1fr)); }
  .file-grid { grid-template-columns:repeat(auto-fill,minmax(110px,1fr)); }
  .rinput-group input[type="number"] { width:100px; }
}