@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Syne:wght@400;600;800&display=swap');
:root{
  --bg:#0e0f14;--surface:#16181f;--surface2:#1e2029;--border:#2a2d3a;
  --text:#e8eaf2;--muted:#5a5f7a;--accent:#5b8dee;
  --add-bg:#0d2e1a;--add-hl:#1a4f2e;--add-text:#4ade80;--add-line:#22c55e;
  --del-bg:#2e0d0d;--del-hl:#4f1a1a;--del-text:#f87171;--del-line:#ef4444;
  --eq-text:#9ca3af;--ai-bg:#0d1525;--ai-bdr:#1e3a5f;--ai-acc:#60a5fa;
  --ad-bg:#111318;--ad-bdr:#22253a;
  --hdr-bg:rgba(14,15,20,.97);--noise-op:0.03;
  --nav-h:52px;--hdr-h:64px;
}

/* ══ LIGHT THEME ═════════════════════════════════════ */
:root[data-theme="light"]{
  --bg:#f5f6fa;--surface:#ffffff;--surface2:#eef0f6;--border:#dde1ec;
  --text:#1a1c29;--muted:#8388a3;--accent:#5b8dee;
  --add-bg:#e6f9ee;--add-hl:#bbf0d1;--add-text:#16a34a;--add-line:#22c55e;
  --del-bg:#fdecec;--del-hl:#fad0d0;--del-text:#dc2626;--del-line:#ef4444;
  --eq-text:#6b7280;--ai-bg:#eef4ff;--ai-bdr:#bfdbfe;--ai-acc:#2563eb;
  --ad-bg:#f0f1f6;--ad-bdr:#d8dbe8;
  --hdr-bg:rgba(255,255,255,.92);--noise-op:0.015;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
body{background:var(--bg);color:var(--text);font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;min-height:100vh;overflow-x:hidden;}
body::before{content:'';position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");opacity:var(--noise-op);pointer-events:none;z-index:0;}

/* ══ HEADER ══════════════════════════════════════════ */
header{display:flex;align-items:stretch;border-bottom:1px solid var(--border);background:var(--hdr-bg);backdrop-filter:blur(12px);position:sticky;top:0;z-index:300;min-height:var(--hdr-h);}
.hdr-logo{display:flex;align-items:center;gap:10px;padding:0 16px;flex-shrink:0;text-decoration:none;color:var(--text);}
.hdr-logo-img{width:40px;height:40px;object-fit:contain;flex-shrink:0;filter:drop-shadow(0 2px 8px rgba(91,141,238,.4));}
.hdr-logo-text{font-size:1.18rem;font-weight:800;letter-spacing:-.4px;line-height:1;}
.logo-accent{color:var(--accent);}
.hdr-logo em{color:var(--accent);font-style:normal;}
.hdr-ad{flex:1;display:flex;align-items:center;justify-content:center;margin:8px 14px;background:transparent;border:1px dashed var(--ad-bdr);border-radius:8px;min-width:0;min-height:90px;overflow:hidden;}
.hdr-right{display:flex;align-items:center;gap:14px;padding:0 18px;flex-shrink:0;font-family:'JetBrains Mono',monospace;font-size:.67rem;}
.hstat{display:flex;align-items:center;gap:5px;}
.dot{width:7px;height:7px;border-radius:50%;}
.dot.a{background:var(--add-line);}.dot.d{background:var(--del-line);}.dot.e{background:var(--muted);}

/* ══ TOP NAV BAR ═════════════════════════════════════ */
.nav-bar{
  display:flex;align-items:center;gap:4px;
  padding:0 20px;
  height:var(--nav-h);
  background:var(--surface);
  border-bottom:1px solid var(--border);
  position:sticky;top:var(--hdr-h);z-index:290;
  overflow-x:auto;scrollbar-width:none;
}
.nav-bar::-webkit-scrollbar{display:none;}
.nav-btn{
  display:flex;align-items:center;gap:7px;
  padding:7px 16px;
  border:1px solid transparent;border-radius:8px;
  color:var(--muted);background:transparent;
  font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;font-size:.8rem;font-weight:600;
  cursor:pointer;white-space:nowrap;
  transition:color .18s,background .18s,border-color .18s;
  flex-shrink:0;
}
.nav-btn .ico{font-size:.95rem;}
.nav-btn:hover{color:var(--text);background:var(--surface2);}
.nav-btn.active{
  color:#fff;
  background:linear-gradient(135deg,var(--accent),#7b6cf6);
  border-color:transparent;
  box-shadow:0 2px 12px rgba(91,141,238,.35);
}
.nav-divider{width:1px;height:22px;background:var(--border);margin:0 4px;flex-shrink:0;}

/* ══ PAGE SHELL [left-ad | content | right-ad] ═══════ */
.page-shell{display:grid;grid-template-columns:170px 1fr;min-height:calc(100vh - var(--hdr-h) - var(--nav-h));max-width:1860px;margin:0 auto;position:relative;z-index:1;}
.side-ad{padding:18px 10px;display:flex;flex-direction:column;gap:14px;align-items:center;}
.ad-slot{width:160px;background:transparent;border:1px dashed var(--ad-bdr);border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;position:sticky;top:calc(var(--hdr-h) + var(--nav-h) + 12px);overflow:hidden;}
.ad-slot.tall{height:600px;}.ad-slot.sq250{height:250px;}
.ad-lbl{font-size:.48rem;letter-spacing:2px;text-transform:uppercase;color:var(--muted);opacity:.3;user-select:none;}
.ad-sz{font-family:'JetBrains Mono',monospace;font-size:.5rem;color:var(--muted);opacity:.22;}

/* ══ MAIN ════════════════════════════════════════════ */
main{padding:28px 24px 80px;min-width:0;}

/* ══ TOOL PANELS ═════════════════════════════════════ */
.tool-panel{display:none;}
.tool-panel.active{display:block;animation:fadeUp .25s ease forwards;}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}

/* ══ UPLOAD ZONES ════════════════════════════════════ */
.upload-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px;}
.upload-zone{
  border:2px dashed var(--border);border-radius:12px;
  padding:28px 20px;text-align:center;cursor:pointer;
  transition:border-color .2s,background .2s;
  position:relative;background:var(--surface);
}
.upload-zone:hover,.upload-zone.drag-over{border-color:var(--accent);background:rgba(91,141,238,.06);}
.upload-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%;}
.uz-icon{font-size:2rem;margin-bottom:8px;opacity:.6;}
.uz-label{font-size:.78rem;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);margin-bottom:4px;}
.uz-hint{font-size:.72rem;color:var(--muted);opacity:.7;}
.uz-filename{font-size:.78rem;color:var(--accent);font-family:'JetBrains Mono',monospace;margin-top:6px;word-break:break-all;}

/* ══ CONTROLS ════════════════════════════════════════ */
.controls{display:flex;align-items:center;gap:12px;margin-bottom:18px;flex-wrap:wrap;}
.btn-primary{padding:10px 28px;background:linear-gradient(135deg,var(--accent),#7b6cf6);border:none;border-radius:8px;color:#fff;font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;font-weight:700;font-size:.85rem;cursor:pointer;transition:opacity .2s,transform .15s;box-shadow:0 4px 18px rgba(91,141,238,.3);}
.btn-primary:hover{opacity:.9;transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-primary:disabled{opacity:.45;cursor:not-allowed;transform:none;}
.btn-ghost{padding:10px 18px;background:transparent;border:1px solid var(--border);border-radius:8px;color:var(--muted);font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;font-weight:600;font-size:.83rem;cursor:pointer;transition:border-color .2s,color .2s;}
.btn-ghost:hover{border-color:var(--del-line);color:var(--del-text);}
.kbd-hint{margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:.64rem;color:var(--muted);background:var(--surface2);border:1px solid var(--border);padding:4px 10px;border-radius:6px;}

/* ══ PROGRESS / STATUS ═══════════════════════════════ */
.progress-bar{height:3px;background:var(--border);border-radius:2px;overflow:hidden;margin-bottom:14px;display:none;}
.progress-bar.show{display:block;}
.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent),#7b6cf6);border-radius:2px;animation:prog 1.8s ease infinite;}
@keyframes prog{0%{width:0;margin-left:0;}50%{width:60%;margin-left:20%;}100%{width:0;margin-left:100%};}

/* ══ TEXT DIFF STYLES ════════════════════════════════ */
.input-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:18px;}
.box-wrap{display:flex;flex-direction:column;gap:7px;}
.box-label{font-size:.7rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);}
textarea{width:100%;height:340px;background:var(--surface);border:1px solid var(--border);border-radius:10px;color:var(--text);font-family:'JetBrains Mono',monospace;font-size:.81rem;line-height:1.7;padding:14px;resize:vertical;outline:none;transition:border-color .2s,box-shadow .2s;}
textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(91,141,238,.12);}
textarea::placeholder{color:var(--muted);}
.legend{display:flex;gap:14px;margin-bottom:12px;font-size:.7rem;font-family:'JetBrains Mono',monospace;flex-wrap:wrap;}
.leg{display:flex;align-items:center;gap:6px;}
.chip{padding:2px 8px;border-radius:4px;font-size:.65rem;font-weight:600;}
.chip-a{background:var(--add-hl);color:var(--add-text);border:1px solid var(--add-line);}
.chip-d{background:var(--del-hl);color:var(--del-text);border:1px solid var(--del-line);}
.chip-c{background:rgba(91,141,238,.12);color:#93b4f5;border:1px solid rgba(91,141,238,.3);}
.chip-e{background:var(--surface2);color:var(--eq-text);border:1px solid var(--border);}
.sum-bar{display:none;gap:18px;padding:11px 16px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;margin-bottom:13px;font-family:'JetBrains Mono',monospace;font-size:.73rem;flex-wrap:wrap;}
.sum-item{display:flex;align-items:center;gap:6px;}
.sum-val{font-weight:700;font-size:.93rem;}
.sv-a{color:var(--add-text);}.sv-d{color:var(--del-text);}.sv-e{color:var(--accent);}
.ident-banner{display:none;text-align:center;padding:22px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;color:var(--add-text);font-size:.9rem;font-weight:600;margin-bottom:13px;}

/* ══ DIFF PANES ══════════════════════════════════════ */
.diff-sec{display:none;}
.diff-sec.show{display:block;}
.diff-hdr{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:6px;}
.diff-col-lbl{font-size:.65rem;font-weight:600;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted);padding:0 3px;display:flex;align-items:center;justify-content:space-between;}
.chg-cnt{font-family:'JetBrains Mono',monospace;background:var(--surface2);padding:2px 7px;border-radius:4px;font-size:.61rem;color:var(--accent);}
.diff-panes{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.diff-pane{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden;font-family:'JetBrains Mono',monospace;font-size:.77rem;line-height:1.82;max-height:640px;overflow-y:auto;}
.diff-pane::-webkit-scrollbar{width:5px;}
.diff-pane::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}
.dl{display:flex;align-items:stretch;min-height:26px;border-bottom:1px solid rgba(42,45,58,.4);}
.ln{min-width:42px;text-align:right;padding:3px 7px;font-size:.65rem;color:var(--muted);user-select:none;border-right:1px solid var(--border);flex-shrink:0;}
.mk{width:19px;text-align:center;padding:3px 2px;font-weight:700;font-size:.76rem;flex-shrink:0;}
.ct{flex:1;padding:3px 10px;white-space:pre-wrap;word-break:break-all;}
.dl-add{background:var(--add-bg);}.dl-add .ln{background:var(--add-bg);border-right-color:var(--add-hl);}.dl-add .mk{color:var(--add-line);}.dl-add .ct{color:var(--add-text);}
.dl-del{background:var(--del-bg);}.dl-del .ln{background:var(--del-bg);border-right-color:var(--del-hl);}.dl-del .mk{color:var(--del-line);}.dl-del .ct{color:var(--del-text);}
.dl-chg{background:rgba(255,255,255,.016);}.dl-chg .mk{color:rgba(91,141,238,.6);}.dl-chg .ct{color:var(--eq-text);}
.dl-eq .mk{color:var(--muted);opacity:.28;}.dl-eq .ct{color:var(--eq-text);}
.dl-mt{background:rgba(0,0,0,.18);}.dl-mt .ct,.dl-mt .mk{color:transparent;}
.char-d{background:rgba(239,68,68,.22);color:#fca5a5;border-radius:3px;padding:0 2px;font-weight:600;}
.char-a{background:rgba(34,197,94,.2);color:#86efac;border-radius:3px;padding:0 2px;font-weight:600;}

/* ══ DIFF NAVIGATION ═════════════════════════════════ */
.diff-nav{display:flex;align-items:center;gap:8px;margin-bottom:10px;}
.diff-nav-btn{width:30px;height:30px;display:flex;align-items:center;justify-content:center;background:var(--surface2);border:1px solid var(--border);border-radius:8px;color:var(--fg);font-size:1rem;cursor:pointer;transition:background .15s,border-color .15s,color .15s;line-height:1;padding:0;flex-shrink:0;}
.diff-nav-btn:hover{background:var(--accent);border-color:var(--accent);color:#fff;}
.diff-nav-btn:active{transform:scale(.92);}
.diff-nav-btn:disabled{opacity:.3;cursor:not-allowed;pointer-events:none;}
.diff-nav-counter{font-family:'JetBrains Mono',monospace;font-size:.7rem;font-weight:700;color:var(--accent);background:rgba(99,102,241,.12);border:1px solid rgba(99,102,241,.25);padding:3px 10px;border-radius:20px;min-width:52px;text-align:center;}
.diff-nav-hint{font-size:.67rem;color:var(--muted);letter-spacing:.04em;}
.dl.diff-nav-active{outline:2px solid var(--accent);outline-offset:-2px;border-radius:2px;}

/* ══ AI PANEL ════════════════════════════════════════ */
.ai-panel{display:none;background:var(--ai-bg);border:1px solid var(--ai-bdr);border-radius:12px;margin-bottom:16px;overflow:hidden;}
.ai-panel.show{display:block;animation:fadeUp .3s ease forwards;}
.ai-head{display:flex;align-items:center;gap:9px;padding:11px 17px;border-bottom:1px solid var(--ai-bdr);background:rgba(96,165,250,.05);}
.ai-badge{display:flex;align-items:center;gap:5px;font-size:.65rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--ai-acc);background:rgba(96,165,250,.1);border:1px solid rgba(96,165,250,.25);padding:3px 9px;border-radius:20px;}
.ai-badge .pulse{width:6px;height:6px;background:var(--ai-acc);border-radius:50%;animation:pulse 1.4s ease infinite;}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.4;transform:scale(.7);}}
.ai-title{font-size:.83rem;font-weight:700;}
.ai-notice{display:none;margin-left:auto;font-family:'JetBrains Mono',monospace;font-size:.62rem;color:var(--muted);background:var(--surface2);border:1px solid var(--border);padding:3px 9px;border-radius:20px;}
.ai-body{padding:14px 17px;}
.skeleton{display:flex;flex-direction:column;gap:9px;}
.skel{height:12px;border-radius:4px;background:linear-gradient(90deg,var(--surface2) 25%,var(--border) 50%,var(--surface2) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;}
@keyframes shimmer{0%{background-position:200% 0;}100%{background-position:-200% 0;}}
.ai-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:11px;}
.ai-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:13px 15px;}
.ai-card-ico{font-size:1.15rem;margin-bottom:6px;}
.ai-card-lbl{font-size:.59rem;font-weight:700;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-bottom:5px;}
.ai-card-txt{font-size:.8rem;line-height:1.58;color:var(--text);}
.ai-card-txt .hl{color:var(--ai-acc);font-weight:600;}
.ai-card-txt .ok{color:var(--add-text);font-weight:600;}
.sp-lbl{display:block;font-size:.62rem;color:var(--muted);font-family:'JetBrains Mono',monospace;margin:4px 0 3px;}
.sp-chip{display:inline-block;background:var(--del-bg);border:1px solid var(--del-hl);color:var(--del-text);font-family:'JetBrains Mono',monospace;font-size:.68rem;padding:1px 7px;border-radius:4px;margin:2px 3px 2px 0;}
.ai-err{color:var(--del-text);font-size:.79rem;padding:10px 13px;background:var(--del-bg);border-radius:8px;border:1px solid var(--del-hl);}
.code-skip{display:flex;align-items:flex-start;gap:11px;padding:13px;background:var(--surface);border:1px solid var(--border);border-radius:10px;font-size:.8rem;color:var(--muted);line-height:1.55;}
.code-skip .ico{font-size:1.4rem;flex-shrink:0;}

/* ══ IMAGE COMPARE ═══════════════════════════════════ */
.img-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:16px;}
.img-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden;}
.img-card-hdr{padding:9px 13px;border-bottom:1px solid var(--border);font-size:.65rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);}
.img-card img{width:100%;display:block;object-fit:contain;max-height:340px;background:#0a0a0f;}
.img-stats{display:flex;flex-wrap:wrap;gap:10px;padding:13px;background:var(--surface2);border:1px solid var(--border);border-radius:10px;}
.img-stat{display:flex;flex-direction:column;gap:2px;}
.img-stat-lbl{font-size:.58rem;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);}
.img-stat-val{font-size:.95rem;font-weight:700;font-family:'JetBrains Mono',monospace;}

/* ══ EXCEL COMPARE ═══════════════════════════════════ */
.sheet-tabs{display:flex;gap:6px;margin-bottom:13px;flex-wrap:wrap;}
.sheet-tab{padding:6px 14px;border:1px solid var(--border);border-radius:6px;background:var(--surface2);color:var(--muted);font-size:.75rem;font-weight:600;cursor:pointer;transition:all .18s;}
.sheet-tab.active,.sheet-tab:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.sheet-tab.has-diff{border-color:var(--del-line);color:var(--del-text);}
.sheet-tab.active.has-diff,.sheet-tab.has-diff:hover{background:var(--del-line);}
.xls-wrap{overflow-x:auto;}
.xls-table{border-collapse:collapse;font-family:'JetBrains Mono',monospace;font-size:.72rem;min-width:100%;}
.xls-table th,.xls-table td{padding:5px 10px;border:1px solid var(--border);white-space:nowrap;max-width:200px;overflow:hidden;text-overflow:ellipsis;}
.xls-table th{background:var(--surface2);color:var(--muted);font-weight:600;font-size:.62rem;letter-spacing:1px;}
.xls-table td{background:var(--surface);}
.xls-table td.cell-changed-del{background:var(--del-bg);color:var(--del-text);}
.xls-table td.cell-changed-add{background:var(--add-bg);color:var(--add-text);}
.xls-table td.cell-added-row{background:var(--add-bg);color:var(--add-text);}
.xls-table td.cell-deleted-row{background:var(--del-bg);color:var(--del-text);}
.xls-legend{display:flex;gap:14px;margin-bottom:10px;font-size:.69rem;flex-wrap:wrap;}

/* ══ ZIP FOLDER COMPARE ══════════════════════════════ */
.zip-summary{display:flex;gap:10px;margin-bottom:14px;flex-wrap:wrap;}
.zip-badge{padding:5px 13px;border-radius:6px;font-size:.73rem;font-weight:700;cursor:default;}
.zb-mod{background:rgba(91,141,238,.12);color:#93b4f5;border:1px solid rgba(91,141,238,.3);}
.zb-add{background:var(--add-hl);color:var(--add-text);border:1px solid var(--add-line);}
.zb-del{background:var(--del-hl);color:var(--del-text);border:1px solid var(--del-line);}
.zb-eq{background:var(--surface2);color:var(--eq-text);border:1px solid var(--border);}
.zb-bin{background:rgba(251,191,36,.1);color:#fbbf24;border:1px solid rgba(251,191,36,.3);}
.zip-filter{display:flex;gap:6px;margin-bottom:11px;flex-wrap:wrap;}
.zf-btn{padding:4px 12px;border:1px solid var(--border);border-radius:5px;background:var(--surface2);color:var(--muted);font-size:.7rem;font-weight:600;cursor:pointer;transition:all .15s;}
.zf-btn.active,.zf-btn:hover{background:var(--accent);color:#fff;border-color:var(--accent);}
.file-tree{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden;}
.file-row{display:flex;align-items:center;gap:10px;padding:9px 14px;border-bottom:1px solid rgba(42,45,58,.4);cursor:pointer;transition:background .15s;}
.file-row:last-child{border-bottom:none;}
.file-row:hover{background:var(--surface2);}
.file-row.clickable:hover{background:rgba(91,141,238,.08);}
.file-icon{font-size:.95rem;flex-shrink:0;}
.file-path{flex:1;font-family:'JetBrains Mono',monospace;font-size:.75rem;color:var(--text);}
.file-badge{font-size:.62rem;font-weight:700;padding:2px 8px;border-radius:4px;flex-shrink:0;}
.fb-mod{background:rgba(91,141,238,.15);color:#93b4f5;}
.fb-add{background:var(--add-hl);color:var(--add-text);}
.fb-del{background:var(--del-hl);color:var(--del-text);}
.fb-eq{background:var(--surface2);color:var(--eq-text);}
.fb-bin{background:rgba(251,191,36,.12);color:#fbbf24;}
.file-diff-panel{background:var(--surface);border:1px solid var(--border);border-radius:10px;margin-top:14px;overflow:hidden;display:none;}
.file-diff-panel.show{display:block;animation:fadeUp .25s ease forwards;}
.file-diff-hdr{display:flex;align-items:center;justify-content:space-between;padding:10px 15px;border-bottom:1px solid var(--border);background:var(--surface2);}
.file-diff-hdr h4{font-size:.78rem;font-family:'JetBrains Mono',monospace;color:var(--accent);}
.file-diff-close{background:none;border:none;color:var(--muted);cursor:pointer;font-size:1.1rem;padding:2px 6px;}

/* ══ RESULT BOX ══════════════════════════════════════ */
.result-area{display:none;}
.result-area.show{display:block;animation:fadeUp .25s ease forwards;}
.err-box{padding:14px 17px;background:var(--del-bg);border:1px solid var(--del-hl);border-radius:10px;color:var(--del-text);font-size:.84rem;margin-bottom:14px;}

/* ══ FOOTER ══════════════════════════════════════════ */
/* ══ FOOTER — 4-column layout ══════════════════════════ */
footer{border-top:1px solid var(--border);background:rgba(12,13,18,.98);padding:48px 48px 0;position:relative;z-index:10;}
.footer-main{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid var(--border);}
.footer-brand-row{display:flex;align-items:center;gap:10px;margin-bottom:12px;}
.footer-logo-img{width:36px;height:36px;object-fit:contain;filter:drop-shadow(0 2px 6px rgba(91,141,238,.35));}
.footer-logo-name{font-size:1.1rem;font-weight:800;letter-spacing:-.3px;color:var(--fg);}
.footer-accent{color:var(--accent);}
.footer-brand-desc{font-size:.78rem;color:var(--muted);line-height:1.65;margin:0 0 18px;max-width:240px;}
.footer-social{display:flex;gap:8px;}
.fsoc-btn{width:32px;height:32px;border-radius:8px;background:var(--surface2);border:1px solid var(--border);color:var(--muted);font-size:.85rem;font-weight:700;display:flex;align-items:center;justify-content:center;text-decoration:none;transition:border-color .2s,color .2s,background .2s;}
.fsoc-btn:hover{border-color:var(--accent);color:var(--accent);background:rgba(99,102,241,.1);}
.footer-col{display:flex;flex-direction:column;gap:0;}
.footer-col-title{font-size:.65rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;padding-bottom:8px;border-bottom:1px solid var(--border);}
.footer-col a{color:#9095b0;text-decoration:none;font-size:.8rem;padding:4px 0;transition:color .2s;cursor:pointer;}
.footer-col a:hover{color:var(--accent);}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:16px 0;font-size:.7rem;color:var(--muted);flex-wrap:wrap;gap:8px;}
.footer-bottom a{color:var(--accent);text-decoration:none;}
.footer-bottom a:hover{text-decoration:underline;}
/* legacy single-line links (kept for fallback) */
.footer-links{display:none;}
.footer-logo-row{display:none;}
.footer-tagline{display:none;}
.footer-copy{display:none;}
.footer-sep{display:none;}
@media(max-width:860px){
  footer{padding:36px 20px 0;}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1/-1;}
}
@media(max-width:480px){
  .footer-main{grid-template-columns:1fr;}
  .footer-brand{grid-column:auto;}
  .footer-bottom{flex-direction:column;text-align:center;}
}

/* ══ MODAL ═══════════════════════════════════════════ */
.modal-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.75);backdrop-filter:blur(7px);z-index:1000;align-items:center;justify-content:center;padding:18px;}
.modal-backdrop.open{display:flex;}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:16px;width:100%;max-width:660px;max-height:88vh;display:flex;flex-direction:column;animation:modalIn .2s ease forwards;box-shadow:0 24px 80px rgba(0,0,0,.65);}
@keyframes modalIn{from{opacity:0;transform:scale(.95) translateY(12px);}to{opacity:1;transform:scale(1) translateY(0);}}
.modal-head{display:flex;align-items:center;justify-content:space-between;padding:17px 20px 13px;border-bottom:1px solid var(--border);}
.modal-head h2{font-size:1rem;font-weight:800;}
.modal-close{width:28px;height:28px;border-radius:7px;background:var(--surface2);border:1px solid var(--border);color:var(--muted);font-size:1rem;cursor:pointer;display:flex;align-items:center;justify-content:center;}
.modal-close:hover{background:var(--del-bg);color:var(--del-text);}
.modal-body{padding:20px;overflow-y:auto;font-size:.86rem;line-height:1.74;color:var(--text);}
.modal-body::-webkit-scrollbar{width:5px;}
.modal-body::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px;}
.modal-body h3{font-size:.9rem;font-weight:700;color:var(--accent);margin:16px 0 6px;}
.modal-body h3:first-child{margin-top:0;}
.modal-body p{color:#adb1cc;margin-bottom:9px;}
.modal-body ul{padding-left:16px;color:#adb1cc;margin-bottom:9px;}
.modal-body li{margin-bottom:3px;}
.modal-body a{color:var(--accent);}
.modal-body strong{color:var(--text);}
.fb-field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px;}
.fb-label{font-size:.67rem;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted);}
.fb-input,.fb-select,.fb-textarea{width:100%;background:var(--surface2);border:1px solid var(--border);border-radius:8px;color:var(--text);font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;font-size:.83rem;padding:9px 13px;outline:none;transition:border-color .2s;}
.fb-input:focus,.fb-textarea:focus{border-color:var(--accent);}
.fb-textarea{height:100px;resize:vertical;font-family:'JetBrains Mono',monospace;font-size:.78rem;}
.fb-submit{padding:9px 26px;background:linear-gradient(135deg,var(--accent),#7b6cf6);border:none;border-radius:8px;color:#fff;font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;font-weight:700;font-size:.83rem;cursor:pointer;}
.fb-submit:hover{opacity:.88;}
.fb-success{text-align:center;padding:28px;color:var(--add-text);font-size:.88rem;font-weight:600;}

/* ══ RESPONSIVE ══════════════════════════════════════ */
@media(max-width:1100px){.page-shell{grid-template-columns:0 1fr;}.side-ad{display:none;}}
@media(max-width:820px){
  .upload-row,.input-row,.diff-panes,.diff-hdr,.img-grid{grid-template-columns:1fr;}
  .hdr-right,.kbd-hint{display:none;} main{padding:14px 12px 55px;} footer{padding:18px 16px;}
  .ai-cards{grid-template-columns:1fr;} .img-grid{grid-template-columns:1fr;}
}

/* ── Override: button header font → Arial ─────────────────── */
.nav-btn,
.btn-primary,
.btn-ghost,
.modal-close,
.fb-submit,
.zf-btn,
.sheet-tab {
  font-family: Arial, 'Helvetica Neue', Helvetica, sans-serif;
}

/* ── Contact modal — wider two-column layout ─────────────────── */
.modal-contact { max-width:860px; }
.contact-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
}
.contact-left {
  padding:24px;
  background:var(--surface2);
  border-right:1px solid var(--border);
  border-radius:0 0 0 14px;
}
.contact-right {
  padding:24px;
  background:var(--surface);
  border-radius:0 0 14px 0;
}
.contact-info-title {
  font-size:1.05rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:20px;
  letter-spacing:-.2px;
}
.contact-info-item {
  display:flex;
  align-items:flex-start;
  gap:14px;
  margin-bottom:18px;
}
.ci-icon {
  width:38px;height:38px;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;
  flex-shrink:0;
}
.ci-icon.addr  { background:linear-gradient(135deg,#e74c3c,#c0392b); }
.ci-icon.phone { background:linear-gradient(135deg,#e74c3c,#922b21); }
.ci-icon.email { background:linear-gradient(135deg,#1abc9c,#148f77); }
.ci-icon.insta { background:linear-gradient(135deg,#f58529,#dd2a7b,#8134af,#515bd4); }
.ci-label {
  font-size:.58rem;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--muted);margin-bottom:3px;
}
.ci-value { font-size:.88rem;color:var(--text);line-height:1.4; }
.ci-value a { color:var(--text);text-decoration:none; }
.ci-value a:hover { color:var(--accent); }
.biz-hours {
  margin-top:22px;
  background:rgba(255,255,255,.04);
  border:1px solid var(--border);
  border-radius:10px;
  padding:14px 16px;
}
.biz-hours-title {
  font-size:.78rem;font-weight:700;color:var(--text);
  margin-bottom:10px;letter-spacing:-.1px;
}
.biz-row {
  display:flex;justify-content:space-between;
  font-size:.78rem;color:var(--muted);
  padding:3px 0;border-bottom:1px solid rgba(255,255,255,.05);
}
.biz-row:last-child { border-bottom:none; }
.biz-row .biz-time { color:var(--text);font-weight:600; }
.contact-form-title {
  font-size:1.05rem;font-weight:700;color:var(--text);
  margin-bottom:18px;letter-spacing:-.2px;
}
.cf-row { display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px; }
.cf-field { display:flex;flex-direction:column;gap:5px;margin-bottom:12px; }
.cf-label {
  font-size:.58rem;font-weight:700;letter-spacing:2px;
  text-transform:uppercase;color:var(--muted);
}
.cf-input,.cf-textarea {
  width:100%;
  background:var(--surface2);
  border:1px solid var(--border);
  border-radius:8px;
  color:var(--text);
  font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;
  font-size:.84rem;
  padding:10px 13px;
  outline:none;
  transition:border-color .2s,box-shadow .2s;
}
.cf-input:focus,.cf-textarea:focus {
  border-color:var(--accent);
  box-shadow:0 0 0 3px rgba(91,141,238,.1);
}
.cf-input::placeholder,.cf-textarea::placeholder { color:var(--muted);opacity:.7; }
.cf-textarea { height:110px;resize:vertical;line-height:1.55; }
.cf-submit {
  width:100%;padding:12px;
  background:linear-gradient(135deg,#3b82f6,#2563eb);
  border:none;border-radius:8px;color:#fff;
  font-family:Arial,'Helvetica Neue',Helvetica,sans-serif;
  font-weight:700;font-size:.88rem;letter-spacing:.3px;
  cursor:pointer;transition:opacity .2s,transform .1s;
  box-shadow:0 4px 16px rgba(37,99,235,.35);
}
.cf-submit:hover  { opacity:.9;transform:translateY(-1px); }
.cf-submit:active { transform:translateY(0); }
.cf-success {
  text-align:center;padding:28px 16px;
  color:var(--add-text);font-size:.92rem;font-weight:600;
}
@media(max-width:640px){
  .modal-contact { max-width:100%; }
  .contact-grid  { grid-template-columns:1fr; }
  .contact-left  { border-right:none;border-bottom:1px solid var(--border);border-radius:0; }
  .contact-right { border-radius:0 0 14px 14px; }
  .cf-row        { grid-template-columns:1fr; }
}

/* ── Footer logo ─────────────────────────────────────────────── */
.footer-logo-row {
  display:flex;align-items:center;justify-content:center;gap:10px;
  margin-bottom:12px;
}
.footer-logo-img {
  width:36px;height:36px;object-fit:contain;
  filter:drop-shadow(0 2px 6px rgba(91,141,238,.35));
}
.footer-logo-name {
  font-size:1.05rem;font-weight:800;letter-spacing:-.3px;color:var(--text);
}
.footer-tagline {
  font-size:.7rem;color:var(--muted);
  border-left:1px solid var(--border);
  padding-left:10px;margin-left:2px;
}

/* ── Image comparison detail table ───────────────────────────── */
.img-detail-table {
  display: grid;
  grid-template-columns: 140px 1fr 1fr;
  gap: 0;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  font-family: Arial,'Helvetica Neue',Helvetica,sans-serif;
  font-size: .82rem;
  margin-bottom: 16px;
}
.img-detail-hdr {
  background: var(--surface);
  color: var(--muted);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
}
.img-detail-hdr:nth-child(2),
.img-detail-hdr:nth-child(3) {
  color: var(--text);
  font-size: .72rem;
  letter-spacing: .5px;
  text-transform: none;
}
.img-detail-lbl {
  color: var(--muted);
  font-size: .75rem;
  padding: 9px 14px;
  border-bottom: 1px solid rgba(42,45,58,.5);
  border-right: 1px solid var(--border);
  font-weight: 600;
  display: flex;
  align-items: center;
}
.img-detail-val {
  padding: 9px 14px;
  border-bottom: 1px solid rgba(42,45,58,.5);
  color: var(--text);
  font-family: 'JetBrains Mono', monospace;
  font-size: .78rem;
  display: flex;
  align-items: center;
}
.img-detail-table > div:nth-last-child(-n+3) {
  border-bottom: none;
}
/* Only 2 images side by side now */
.img-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

/* ══ SEO CONTENT SECTIONS ════════════════════════════════ */
.seo-hero{padding:36px 24px 28px;text-align:center;border-bottom:1px solid var(--border);background:linear-gradient(180deg,rgba(99,102,241,.06) 0%,transparent 100%);}
.seo-hero h1{font-size:1.75rem;font-weight:800;letter-spacing:-.03em;margin:0 0 10px;line-height:1.2;}
.seo-hero h1 .accent{color:var(--accent);}
.seo-hero .seo-sub{font-size:.92rem;color:var(--muted);max-width:600px;margin:0 auto 18px;line-height:1.6;}
.seo-badges{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-bottom:4px;}
.seo-badge{font-size:.68rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 12px;border-radius:20px;border:1px solid var(--border);color:var(--muted);background:var(--surface1);}
.seo-badge.green{color:#4ade80;border-color:rgba(74,222,128,.3);background:rgba(74,222,128,.07);}
.seo-badge.blue{color:#60a5fa;border-color:rgba(96,165,250,.3);background:rgba(96,165,250,.07);}
.seo-badge.purple{color:var(--accent);border-color:rgba(99,102,241,.3);background:rgba(99,102,241,.08);}

.seo-features{padding:40px 24px;max-width:1100px;margin:0 auto;}
.seo-features h2{font-size:1.2rem;font-weight:700;text-align:center;margin:0 0 24px;letter-spacing:-.02em;}
.seo-features h2 span{color:var(--accent);}
.feat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:14px;}
.feat-card{background:var(--surface1);border:1px solid var(--border);border-radius:12px;padding:18px 16px;transition:border-color .2s;}
.feat-card:hover{border-color:var(--accent);}
.feat-icon{font-size:1.5rem;margin-bottom:9px;}
.feat-card h3{font-size:.82rem;font-weight:700;margin:0 0 6px;color:var(--fg);}
.feat-card p{font-size:.75rem;color:var(--muted);margin:0;line-height:1.55;}

.seo-how{padding:0 24px 40px;max-width:860px;margin:0 auto;}
.seo-how h2{font-size:1.1rem;font-weight:700;text-align:center;margin:0 0 20px;letter-spacing:-.02em;}
.how-steps{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;}
.how-step{background:var(--surface1);border:1px solid var(--border);border-radius:10px;padding:16px;display:flex;gap:12px;align-items:flex-start;}
.step-num{width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-size:.72rem;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.how-step h3{font-size:.8rem;font-weight:700;margin:0 0 4px;}
.how-step p{font-size:.73rem;color:var(--muted);margin:0;line-height:1.5;}

.seo-faq{padding:0 24px 48px;max-width:760px;margin:0 auto;}
.seo-faq h2{font-size:1.1rem;font-weight:700;text-align:center;margin:0 0 20px;letter-spacing:-.02em;}
.faq-item{border:1px solid var(--border);border-radius:10px;margin-bottom:10px;overflow:hidden;}
.faq-q{width:100%;background:var(--surface1);border:none;color:var(--fg);font-size:.85rem;font-weight:600;text-align:left;padding:14px 16px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:10px;}
.faq-q:hover{background:var(--surface2);}
.faq-q .faq-arrow{color:var(--accent);font-size:.75rem;transition:transform .2s;flex-shrink:0;}
.faq-q.open .faq-arrow{transform:rotate(180deg);}
.faq-a{display:none;padding:0 16px 14px;font-size:.8rem;color:var(--muted);line-height:1.7;}
.faq-a.open{display:block;}

@media(max-width:680px){
  .seo-hero h1{font-size:1.3rem;}
  .feat-grid{grid-template-columns:1fr 1fr;}
  .how-steps{grid-template-columns:1fr;}
}

/* ══ THEME TOGGLE ════════════════════════════════════ */
.theme-toggle{display:flex;align-items:center;justify-content:center;width:38px;height:38px;
  margin:0 10px;border-radius:10px;border:1px solid var(--border);background:var(--surface2);
  color:var(--muted);cursor:pointer;flex-shrink:0;transition:border-color .2s,color .2s,background .2s;
  font-size:1rem;}
.theme-toggle:hover{border-color:var(--accent);color:var(--accent);}
.theme-toggle .icon-sun{display:none;}
.theme-toggle .icon-moon{display:inline;}
:root[data-theme="light"] .theme-toggle .icon-sun{display:inline;}
:root[data-theme="light"] .theme-toggle .icon-moon{display:none;}

/* ══ FOOTER HORIZONTAL AD ═════════════════════════════ */
.footer-ad-slot{max-width:1400px;margin:0 auto 0;padding:20px 24px 0;display:flex;
  align-items:center;justify-content:center;}
.footer-ad-inner{width:100%;max-width:970px;min-height:90px;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:4px;border:1px dashed var(--ad-bdr);
  border-radius:10px;background:var(--ad-bg);overflow:hidden;}
@media(max-width:600px){
  .footer-ad-inner{min-height:60px;}
}