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.75rem;background:#1976d21a;border-radius:4px}.copy-button{background:var(--bg-secondary);border:1px solid var(--bg-hover);border-radius:4px;padding:.25rem .5rem;cursor:pointer;font-size:1rem;color:var(--text-primary);transition:all .2s;flex-shrink:0;display:flex;align-items:center;justify-content:center;min-width:32px;height:28px;position:relative}.copy-button:empty:before{content:"";position:absolute;width:12px;height:12px;border:1.5px solid currentColor;border-radius:2px;top:50%;left:50%;transform:translate(-60%,-60%)}.copy-button:empty:after{content:"";position:absolute;width:12px;height:12px;border:1.5px solid currentColor;border-radius:2px;top:50%;left:50%;transform:translate(-40%,-40%);background:var(--bg-secondary)}.copy-button:hover{background:var(--bg-tertiary);border-color:var(--accent-primary)}.copy-button:active{transform:scale(.95)}.tutorial-explanation{color:var(--text-secondary);font-size:.9rem;margin:0;font-style:italic;font-family:inherit}.tutorial-note{background:var(--bg-secondary);border-left:3px solid var(--status-warn);padding:.75rem 1rem;margin-top:1rem;border-radius:4px;color:var(--text-primary);font-size:.9rem;line-height:1.5;font-family:inherit}.modal-footer{padding:1rem 1.5rem;border-top:1px solid var(--bg-hover);display:flex;justify-content:flex-end;gap:.5rem}.modal-button{padding:.75rem 2rem;background:var(--accent-primary);color:var(--text-on-accent, #ffffff);border:none;border-radius:4px;font-size:1rem;cursor:pointer;transition:background .2s}.modal-button:hover:not(:disabled){background:var(--accent-hover)}.benchmark-section{margin:1.5rem 0;padding:1.5rem;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border-color);text-align:center}.benchmark-loading{color:var(--status-warn);font-size:1rem}.benchmark-message{color:var(--text-primary);font-size:1.1rem;line-height:1.5}.benchmark-time{color:var(--status-ok);font-size:1.65rem;font-weight:700;margin:.5rem 0;line-height:1.2}.benchmark-error{color:var(--status-err);font-size:.95rem}.modal-button:disabled{opacity:.5;cursor:not-allowed}.modal-button-secondary{background:var(--bg-secondary);color:var(--text-primary)}.modal-button-secondary:hover{background:var(--bg-tertiary)}.tagline-section{text-align:center;margin:4rem auto 2rem;padding:2rem}.tagline{font-size:1.5rem;font-weight:600;color:var(--text-primary);margin:0 0 .75rem;text-shadow:0 2px 8px rgba(0,0,0,.2)}.tagline-description{font-size:1.1rem;color:var(--text-primary);margin:0;text-shadow:0 1px 4px rgba(0,0,0,.15)}.clear-thumbnails-container{padding:.75rem;border-top:1px solid var(--border-color);display:flex;justify-content:center}.clear-thumbnails-button{padding:.5rem 1rem;background:#f4433633;color:var(--text-primary);border:1px solid rgba(244,67,54,.4);border-radius:6px;font-size:.9rem;font-weight:600;cursor:pointer;transition:all .2s ease;width:100%}.clear-thumbnails-button:hover{background:#f443364d;border-color:#f4433699;transform:translateY(-1px);box-shadow:0 2px 8px #f4433633}.clear-thumbnails-button:active{transform:translateY(0)}@media (max-width: 768px){.header-logo{width:40px;height:40px}.header-content{flex-direction:column;gap:1rem}header h1{font-size:2rem}header p{font-size:1rem}.tagline-section{margin:2rem auto 1rem;padding:1rem}.tagline{font-size:1.25rem}.tagline-description{font-size:1rem}}