@import "https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap";*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root,[data-theme=dark]{--font-sans:"Inter", system-ui, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--bg:#0d1117;--surface:#161b22;--surface-alt:#1a2030;--editor-bg:#0d1117;--header-bg:#161b22eb;--border:#30363d;--border-subtle:#21262d;--text-primary:#e6edf3;--text-secondary:#8b949e;--text-muted:#484f58;--accent:#7c6af9;--accent-alt:#5b8af8;--accent-gradient:linear-gradient(135deg, #7c6af9 0%, #5b8af8 100%);--accent-subtle:#7c6af91f;--accent-glow:#7c6af94d;--green:#3fb950;--green-bg:#2ea04326;--red:#f85149;--red-bg:#f8514926;--yellow:#d29922;--yellow-bg:#d2992226;--added-line-bg:#2ea0431f;--added-line-text:#3fb950;--removed-line-bg:#f851491f;--removed-line-text:#f85149;--modified-line-bg:#d299221f;--modified-line-text:#d29922;--equal-line-bg:transparent;--empty-line-bg:#ffffff05;--token-added-bg:#2ea04359;--token-added-text:#7ee787;--token-removed-bg:#f8514959;--token-removed-text:#ffa198;--line-num-bg:#161b22;--line-num-color:#484f58;--merge-gutter-bg:#161b22;--scrollbar-thumb:#30363d}[data-theme=light]{--bg:#f6f8fa;--surface:#fff;--surface-alt:#f0f2f5;--editor-bg:#fff;--header-bg:#f6f8faeb;--border:#d0d7de;--border-subtle:#e5e9ef;--text-primary:#1f2328;--text-secondary:#57606a;--text-muted:#9a9fa6;--accent:#6f5fd4;--accent-alt:#4c7ef0;--accent-gradient:linear-gradient(135deg, #6f5fd4 0%, #4c7ef0 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.3s;display:flex}::-webkit-scrollbar{width:7px;height:7px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:4px}@keyframes fadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}button{font-family:var(--font-sans)}.app-header{background:var(--header-bg);border-bottom:1px solid var(--border);z-index:100;-webkit-backdrop-filter:blur(12px);justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex;position:sticky;top:0}.logo{align-items:center;gap:10px;display:flex}.logo-icon{background:var(--accent-gradient);color:#fff;width:38px;height:38px;box-shadow:0 4px 14px var(--accent-glow);border-radius:10px;justify-content:center;align-items:center;display:flex}.logo-text{letter-spacing:-.5px;color:var(--text-primary);font-size:1.4rem;font-weight:800}.logo-accent{color:var(--accent)}.header-tagline{color:var(--text-muted);border-left:1px solid var(--border);white-space:nowrap;margin-left:14px;padding-left:14px;font-size:.75rem}.header-right{align-items:center;gap:16px;display:flex}.stats-banner{background:var(--surface-alt);border:1px solid var(--border);font-size:.78rem;font-weight:600;font-family:var(--font-mono);border-radius:20px;align-items:center;gap:6px;padding:4px 12px;animation:.3s fadeIn;display:flex}.stat{border-radius:6px;padding:2px 6px}.stat-added{color:var(--green);background:var(--green-bg)}.stat-removed{color:var(--red);background:var(--red-bg)}.stat-modified{color:var(--yellow);background:var(--yellow-bg)}.stat-unchanged{color:var(--text-muted)}.theme-toggle{border:1px solid var(--border);background:var(--surface-alt);width:38px;height:38px;color:var(--text-secondary);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;transition:all .2s;display:flex}.theme-toggle:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-subtle);transform:scale(1.05)}@media (width<=640px){.header-tagline{display:none}.stats-banner{padding:3px 8px;font-size:.7rem}}.diff-viewer{background:var(--editor-bg);font-family:var(--font-mono);scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) transparent;flex:1;font-size:13px;line-height:1.6;overflow:auto}.diff-viewer::-webkit-scrollbar{width:6px;height:6px}.diff-viewer::-webkit-scrollbar-thumb{background:var(--scrollbar-thumb);border-radius:3px}.diff-table{border-collapse:collapse;table-layout:fixed;width:100%}.diff-table colgroup col:first-child,.diff-table colgroup col:nth-child(5),.diff-table colgroup col:nth-child(3){width:52px}.diff-table colgroup col:nth-child(2),.diff-table 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var(--accent-glow);filter:brightness(1.1);transform:translateY(-2px)}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{opacity:.35;cursor:not-allowed;box-shadow:none}.result-overlay{z-index:1000;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);background:#000000a6;justify-content:center;align-items:center;padding:24px;transition:opacity .25s;display:flex;position:fixed;inset:0}.result-entering{opacity:0}.result-visible{opacity:1}.result-window{background:var(--surface);border:1px solid var(--border);border-radius:16px;flex-direction:column;width:min(1100px,100%);max-height:88vh;animation:.28s cubic-bezier(.34,1.56,.64,1) both scaleInModal;display:flex;overflow:hidden;box-shadow:0 0 0 1px #ffffff0f,0 24px 80px #0000008c}@keyframes scaleInModal{0%{opacity:0;transform:scale(.92)translateY(12px)}to{opacity:1;transform:scale(1)translateY(0)}}.result-window-header{background:var(--surface-alt);border-bottom:1px solid var(--border);flex-shrink:0;align-items:center;gap:12px;padding:12px 18px;display:flex}.result-window-dots{flex-shrink:0;gap:6px;display:flex}.dot{border-radius:50%;width:12px;height:12px}.dot-red{background:#ff5f57}.dot-yellow{background:#ffbd2e}.dot-green{background:#28c840}.result-window-title{text-align:center;color:var(--text-primary);flex:1;margin-right:32px;font-size:.85rem;font-weight:700}.result-close-btn{border:1px solid var(--border);background:var(--surface);width:32px;height:32px;color:var(--text-muted);cursor:pointer;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;transition:all .15s;display:flex}.result-close-btn:hover{background:var(--red-bg);border-color:var(--red);color:var(--red)}.result-stats-bar{background:var(--surface-alt);border-bottom:1px solid var(--border);font-size:.82rem;font-family:var(--font-mono);flex-shrink:0;align-items:center;gap:24px;padding:10px 20px;display:flex}.result-stat{color:var(--text-secondary)}.result-stat strong{margin-left:4px;font-weight:700}.stat-common strong{color:var(--text-secondary)}.stat-new strong{color:var(--green)}.stat-removed strong{color:var(--red)}.stat-modified strong{color:var(--yellow)}.result-diff-area{scrollbar-width:thin;scrollbar-color:var(--scrollbar-thumb) transparent;flex:1;min-height:0;overflow:auto}.app-footer{color:var(--text-muted);background:var(--surface-alt);border-top:1px solid var(--border);flex-shrink:0;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:.72rem;display:flex}.footer-sep{opacity:.4}@media (width<=768px){.hero-section{padding:24px 16px 12px}.options-bar{flex-wrap:wrap;gap:16px}.checker-card{margin:0 12px 12px}.input-editors-row{flex-direction:column}.input-editor-col{border-right:none;border-bottom:1px solid var(--border);min-height:200px}.result-window{height:90vh}}