:root{--bg-color:#0d1117;--text-color:#c9d1d9;--primary-color:#58a6ff;--secondary-color:#8b949e;--card-bg:#161b22b3;--card-border:#30363dcc;--accent-glow:#58a6ff26}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-color);flex-direction:column;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;display:flex}.app-container{width:100%;max-width:1200px;margin:0 auto;padding:2rem}header{text-align:center;margin-bottom:3rem}h1{background:linear-gradient(90deg,#58a6ff,#bc8cff);-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:.5rem;font-size:2.5rem;font-weight:800}.subtitle{color:var(--secondary-color);font-size:1.1rem}.input-section{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--card-border);box-shadow:0 8px 32px var(--accent-glow);border-radius:12px;margin-bottom:2rem;padding:1.5rem}textarea{border:1px solid var(--card-border);width:100%;min-height:120px;color:var(--text-color);resize:vertical;background:#0d1117cc;border-radius:8px;margin-bottom:1rem;padding:1rem;font-size:1rem;transition:border-color .3s}textarea:focus{border-color:var(--primary-color);outline:none}button{color:#fff;cursor:pointer;background:linear-gradient(135deg,#238636,#2ea043);border:none;border-radius:6px;width:100%;padding:.75rem 2rem;font-size:1rem;font-weight:600;transition:transform .2s,box-shadow .2s}button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #2ea04366}button:disabled{color:#8b949e;cursor:not-allowed;background:#21262d}.results-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem;display:grid}.model-card{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--card-border);border-radius:12px;flex-direction:column;padding:1.5rem;transition:transform .3s;display:flex}.model-card:hover{border-color:#58a6ff66;transform:translateY(-5px);box-shadow:0 8px 24px #0003}.card-header{border-bottom:1px solid var(--card-border);justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:.5rem;display:flex}.model-name{color:#fff;font-size:1.1rem;font-weight:700}.provider-badge{color:var(--primary-color);text-transform:uppercase;letter-spacing:.5px;background:#58a6ff1a;border-radius:4px;padding:.2rem .5rem;font-size:.7rem;font-weight:600}.response-content{white-space:pre-wrap;color:#c9d1d9;flex-grow:1;font-size:.95rem;line-height:1.6}.loading-skeleton{background:#8b949e33;border-radius:4px;height:20px;margin-bottom:8px;animation:1.5s infinite pulse}.loading-skeleton.short{width:60%}@keyframes pulse{0%{opacity:.6}50%{opacity:1}to{opacity:.6}}.error-text{color:#ff7b72;font-size:.9rem}.cost-info{border-top:1px solid var(--card-border);color:var(--secondary-color);justify-content:space-between;align-items:center;margin-top:1rem;padding-top:.8rem;font-size:.85rem;display:flex}.cost-value{color:#d2a8ff;font-family:monospace;font-size:1rem;font-weight:600}.model-selector{background:var(--card-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--card-border);box-shadow:0 8px 32px var(--accent-glow);border-radius:12px;margin-bottom:2rem;padding:1.5rem}.model-selector h3{color:var(--text-color);margin-bottom:1rem;font-size:1.1rem}.checkbox-group{flex-wrap:wrap;gap:1rem;display:flex}.checkbox-label{cursor:pointer;border:1px solid var(--card-border);-webkit-user-select:none;user-select:none;background:#0d1117cc;border-radius:6px;align-items:center;gap:.5rem;padding:.5rem 1rem;transition:border-color .2s;display:flex}.checkbox-label:hover{border-color:var(--primary-color)}.checkbox-label input[type=checkbox]{accent-color:var(--primary-color);cursor:pointer;width:1.1rem;height:1.1rem}.total-cost-display{text-align:center;color:#7ee787;background:#2ea0431a;border:1px solid #2ea04366;border-radius:8px;margin-bottom:1.5rem;padding:1.2rem;box-shadow:0 4px 12px #2ea0431a}.text-container{flex-direction:column;display:flex}.text-content.collapsed{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;position:relative;overflow:hidden}.text-content.collapsed:after{content:"";background:linear-gradient(transparent, var(--card-bg));pointer-events:none;width:100%;height:2em;position:absolute;bottom:0;left:0}.toggle-btn{color:var(--primary-color);text-align:left;width:auto;box-shadow:none;background:0 0;border:none;margin-top:.5rem;padding:.5rem 0 0;font-size:.85rem}.toggle-btn:hover:not(:disabled){box-shadow:none;background:0 0;text-decoration:underline;transform:none}@media (width<=768px){.app-container{padding:1rem}h1{font-size:1.8rem}.checkbox-group{flex-direction:column;gap:.5rem}.model-card{padding:1.2rem}.results-grid{grid-template-columns:1fr}}