*{margin:0;padding:0;box-sizing:border-box}:root{--bg-primary: #0d1117;--bg-secondary: #161b22;--bg-tertiary: #21262d;--border-color: #30363d;--text-primary: #f0f6fc;--text-secondary: #c9d1d9;--text-tertiary: #8b949e;--accent-color: #58a6ff;--hover-bg: #30363d;--gradient-start: #161b22;--gradient-end: #0d1117}[data-theme=light]{--bg-primary: #ffffff;--bg-secondary: #f6f8fa;--bg-tertiary: #eaeef2;--border-color: #d0d7de;--text-primary: #1f2328;--text-secondary: #656d76;--text-tertiary: #656d76;--accent-color: #0969da;--hover-bg: #eaeef2;--gradient-start: #f6f8fa;--gradient-end: #ffffff}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-secondary);transition:background-color .3s ease,color .3s ease}.app{min-height:100vh;display:flex;flex-direction:column}.header{padding:3rem 2rem 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var(--border-color)}.modal-button-secondary:hover{background:var(--hover-bg)}.modal-button-primary{background:var(--accent-color);color:#fff}.modal-button-primary:hover{opacity:.9;transform:translateY(-1px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.footer{text-align:center;padding:1.5rem 2rem;color:var(--text-tertiary);font-size:.875rem;border-top:1px solid var(--border-color);margin-top:auto;transition:all .3s ease;background:var(--bg-secondary)}.footer p{margin:0 0 .75rem}.social-links{display:flex;gap:1rem;justify-content:center;align-items:center}.social-link{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;background:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-secondary);transition:all .2s;text-decoration:none}.social-link:hover{background:var(--hover-bg);color:var(--accent-color);border-color:var(--accent-color);transform:translateY(-2px)}@media(max-width:768px){.header{padding:2rem 1rem 1.5rem}.header-content{flex-direction:column;gap:1rem}.header-content>div{text-align:center}.theme-toggle{align-self:center}.header h1{font-size:2rem}.subtitle{font-size:1rem}.upload-card{padding:2rem}.controls,.control-group{flex-direction:column;align-items:stretch}.stats{flex-direction:column;gap:1rem}.heatmap-wrapper{padding:1rem}}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;min-width:320px;min-height:100vh}#root{width:100%}