:root{--bg-primary:#f5f7fa;--bg-secondary:#fff;--bg-tertiary:#eef1f6;--text-primary:#1a1d23;--text-secondary:#6b7280;--text-muted:#9ca3af;--border:#e2e6ed;--accent:#3b82f6;--accent-hover:#2563eb;--accent-gradient:linear-gradient(135deg,#3b82f6,#8b5cf6);--shadow:0 1px 3px rgba(0,0,0,.08);--shadow-lg:0 4px 12px rgba(0,0,0,.12);--radius:12px;--radius-sm:8px;--font-sans:system-ui,-apple-system,sans-serif;--font-mono:ui-monospace,'SF Mono',monospace;--transition:.2s ease;--header-h:56px;--sidebar-w:300px;--danger:#ef4444;--success:#10b981;--warning:#f59e0b}
[data-theme=dark]{--bg-primary:#0d1117;--bg-secondary:#161b22;--bg-tertiary:#1c2333;--text-primary:#e6edf3;--text-secondary:#8b949e;--text-muted:#6b7280;--border:#30363d;--shadow:0 1px 3px rgba(0,0,0,.4);--shadow-lg:0 4px 12px rgba(0,0,0,.6)}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]):not([data-theme=dark]){--bg-primary:#0d1117;--bg-secondary:#161b22;--bg-tertiary:#1c2333;--text-primary:#e6edf3;--text-secondary:#8b949e;--text-muted:#6b7280;--border:#30363d;--shadow:0 1px 3px rgba(0,0,0,.4);--shadow-lg:0 4px 12px rgba(0,0,0,.6)}}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;transition:background var(--transition),color var(--transition)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
::selection{background:var(--accent);color:#fff}

/* header */
#app-header{position:sticky;top:0;z-index:100;display:flex;align-items:center;gap:1rem;height:var(--header-h);padding:0 1.25rem;background:var(--bg-secondary);border-bottom:1px solid var(--border);backdrop-filter:blur(8px)}
#app-header h1{font-size:1.2rem;font-weight:700;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-right:auto}
#menu-toggle,#theme-switcher button{background:none;border:1px solid var(--border);border-radius:var(--radius-sm);padding:.4rem .6rem;cursor:pointer;color:var(--text-secondary);font-size:1rem;transition:all var(--transition)}
#menu-toggle:hover,#theme-switcher button:hover{background:var(--bg-tertiary);color:var(--text-primary)}
#theme-switcher{display:flex;gap:.25rem}
#theme-switcher button[data-active]{background:var(--accent);color:#fff;border-color:var(--accent)}

/* layout */
#app-layout{display:flex;min-height:calc(100vh - var(--header-h))}

/* sidebar */
#sidebar{width:var(--sidebar-w);min-width:var(--sidebar-w);background:var(--bg-secondary);border-right:1px solid var(--border);padding:1rem;overflow-y:auto;transition:all var(--transition);display:flex;flex-direction:column;gap:.75rem;max-height:calc(100vh - var(--header-h));position:sticky;top:var(--header-h)}
#sidebar.collapsed{width:0;min-width:0;padding:0;border:none;overflow:hidden}
#sidebar h3{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted)}
#sidebar fieldset{border:none;padding:.5rem 0;border-bottom:1px solid var(--border)}
#sidebar fieldset:last-child{border-bottom:none}
#sidebar legend{font-size:.8rem;font-weight:600;margin-bottom:.35rem;color:var(--text-primary)}
#sidebar label{display:flex;align-items:center;gap:.4rem;font-size:.82rem;padding:.15rem 0;cursor:pointer;color:var(--text-secondary)}
#sidebar label:hover{color:var(--text-primary)}
#sidebar input[type=checkbox]{accent-color:var(--accent)}

/* range filter */
.range-group{display:flex;align-items:center;gap:.35rem;margin-bottom:.25rem}
.range-group input[type=number]{width:60px;padding:.2rem .3rem;font-size:.72rem;font-family:var(--font-mono);border:1px solid var(--border);border-radius:4px;background:var(--bg-tertiary);color:var(--text-primary);text-align:center}
.slider-group{position:relative;height:24px;margin:.15rem 0}
.slider-group input[type=range]{position:absolute;width:100%;height:4px;top:10px;background:none;pointer-events:none;-webkit-appearance:none;appearance:none}
.slider-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;pointer-events:auto;border:2px solid var(--bg-secondary)}
.slider-group input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--accent);cursor:pointer;pointer-events:auto;border:2px solid var(--bg-secondary)}
.slider-group input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:2px;background:var(--border)}
.slider-group input[type=range]::-moz-range-track{height:4px;border-radius:2px;background:var(--border)}

/* main */
#main-content{flex:1;padding:1.25rem;min-width:0;overflow-y:auto}
#action-bar{display:flex;align-items:center;gap:.75rem;margin-bottom:1.25rem;flex-wrap:wrap}
#search-input{flex:1;min-width:180px;padding:.6rem .9rem;font-size:.9rem;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-secondary);color:var(--text-primary);transition:border var(--transition)}
#search-input:focus{border-color:var(--accent);outline:none}
#search-input::placeholder{color:var(--text-muted)}
#compare-btn{padding:.55rem 1.2rem;font-size:.85rem;font-weight:600;border:none;border-radius:var(--radius-sm);background:var(--accent-gradient);color:#fff;cursor:pointer;transition:opacity var(--transition);white-space:nowrap}
#compare-btn:disabled{opacity:.4;cursor:not-allowed}
#compare-btn:not(:disabled):hover{opacity:.9}
#update-indicator{font-size:.78rem;color:var(--text-muted);white-space:nowrap}

/* model card */
#model-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:1rem}
.model-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;transition:all var(--transition);position:relative}
.model-card:hover{border-color:var(--accent);box-shadow:var(--shadow-lg)}
.model-card .model-select-wrap{position:absolute;top:.75rem;right:.75rem}
.model-card input[type=checkbox]{width:18px;height:18px;accent-color:var(--accent);cursor:pointer}
.model-card h2{font-size:1.05rem;font-weight:700;margin-bottom:.1rem;padding-right:2rem}
.model-card h3{font-size:.85rem;font-weight:500;color:var(--accent);margin-bottom:.6rem}
.model-specs{display:flex;flex-wrap:wrap;gap:.35rem .75rem;font-size:.78rem;color:var(--text-secondary);font-family:var(--font-mono);margin-bottom:.5rem;padding:.4rem 0;border-top:1px solid var(--border)}
.model-specs span{white-space:nowrap}
.model-benchmarks{display:flex;flex-wrap:wrap;gap:.25rem .5rem;padding-top:.35rem;border-top:1px solid var(--border)}
.bench-pill{font-size:.7rem;padding:.12rem .45rem;border-radius:4px;background:var(--bg-tertiary);color:var(--text-secondary);font-family:var(--font-mono);white-space:nowrap}
.bench-pill .score{font-weight:600}
.bench-pill .score.high{color:var(--success)}
.bench-pill .score.mid{color:var(--warning)}
.bench-pill .score.low{color:var(--danger)}
.provider-badge{display:inline-block;font-size:.68rem;font-weight:600;padding:.15rem .55rem;border-radius:4px;color:#fff}
.provider-openai{background:#10a37f}
.provider-anthropic{background:#cc7955}
.provider-google{background:#4285f4}
.provider-meta{background:#0866ff}
.provider-deepseek{background:#4f8cf7}
.provider-mistral{background:#ff5e5e}
.provider-xai{background:#1a1a1a}
.provider-cohere{background:#6c5ce7}
.provider-alibaba{background:#ff6a00}
.provider-moonshot{background:#6c5ce7}
.provider-default{background:#6b7280}
.arch-badge{font-size:.68rem;padding:.12rem .4rem;border-radius:4px;border:1px solid var(--border);color:var(--text-muted);font-family:var(--font-mono)}

/* modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:200;display:flex;align-items:center;justify-content:center;padding:1rem;backdrop-filter:blur(2px)}
.modal-overlay.hidden{display:none}
.modal-box{background:var(--bg-secondary);border-radius:var(--radius);box-shadow:var(--shadow-lg);max-width:1200px;width:100%;max-height:90vh;display:flex;flex-direction:column}
.modal-header{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;border-bottom:1px solid var(--border)}
.modal-header h2{font-size:1.1rem;font-weight:700}
.modal-close{background:none;border:none;font-size:1.3rem;cursor:pointer;color:var(--text-muted);padding:.25rem;line-height:1}
.modal-close:hover{color:var(--text-primary)}
.modal-body{overflow:auto;padding:1.25rem;flex:1}

/* compare table */
#compare-table{width:100%;border-collapse:collapse;font-size:.82rem}
#compare-table th,#compare-table td{padding:.55rem .75rem;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle}
#compare-table th{position:sticky;top:0;background:var(--bg-secondary);z-index:10;font-weight:600;white-space:nowrap}
#compare-table .cat-row{background:var(--bg-tertiary);font-weight:700;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-secondary)}
#compare-table .cat-row td{padding:.35rem .75rem}
#compare-table .best{color:var(--success);font-weight:700}
#compare-table .best::after{content:" ★";font-size:.7rem}
#compare-table .na{color:var(--text-muted);font-style:italic}
#compare-table .header-name{cursor:pointer;position:relative}
#compare-table .header-name:hover{color:var(--accent)}
.model-dropdown{position:absolute;top:100%;left:0;z-index:50;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);box-shadow:var(--shadow-lg);max-height:300px;overflow-y:auto;min-width:220px}
.model-dropdown.hidden{display:none}
.model-dropdown input{width:100%;padding:.45rem .6rem;border:none;border-bottom:1px solid var(--border);background:var(--bg-tertiary);color:var(--text-primary);font-size:.8rem;position:sticky;top:0}
.model-dropdown-item{padding:.4rem .6rem;font-size:.8rem;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.model-dropdown-item:hover{background:var(--bg-tertiary)}
.model-dropdown-item .dd-provider{font-size:.68rem;color:var(--text-muted)}

/* scrollbar */
#sidebar::-webkit-scrollbar,.modal-body::-webkit-scrollbar,.model-dropdown::-webkit-scrollbar{width:6px}
#sidebar::-webkit-scrollbar-track,.modal-body::-webkit-scrollbar-track,.model-dropdown::-webkit-scrollbar-track{background:transparent}
#sidebar::-webkit-scrollbar-thumb,.modal-body::-webkit-scrollbar-thumb,.model-dropdown::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}

/* responsive */
@media(max-width:1023px){#sidebar{position:fixed;left:0;top:var(--header-h);z-index:90;height:calc(100vh - var(--header-h));box-shadow:var(--shadow-lg);transform:translateX(0)}#sidebar.collapsed{transform:translateX(-100%);width:var(--sidebar-w);min-width:var(--sidebar-w);padding:1rem;border-right:1px solid var(--border);overflow-y:auto}#sidebar-backdrop{display:none;position:fixed;inset:0;z-index:80;background:rgba(0,0,0,.3)}#sidebar-backdrop.show{display:block}}
@media(max-width:767px){#model-list{grid-template-columns:1fr}#app-header h1{font-size:1rem}#action-bar{gap:.5rem}#search-input{min-width:120px;font-size:.82rem}#compare-btn{font-size:.78rem;padding:.45rem .8rem}}
@media(max-width:480px){#theme-switcher button{padding:.3rem .45rem;font-size:.85rem}}