:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.app{max-width:500px;margin:0 auto;padding:2rem}header{text-align:center;margin-bottom:2rem}header h1{font-size:1.8rem;margin-bottom:.25rem;background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.week-label{color:#888;font-size:.9rem}.countdown-section{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:20px;padding:2rem;margin-bottom:2rem;color:#fff}.countdown-display{text-align:center;margin-bottom:1.5rem}.countdown-number{display:block;font-size:4rem;font-weight:700;line-height:1}.countdown-label{font-size:1.2rem;opacity:.9}.progress-container{background:#ffffff4d;border-radius:10px;height:12px;overflow:hidden;margin-bottom:1.5rem}.progress-bar{background:#fff;height:100%;border-radius:10px;transition:width .3s ease}.stats{display:flex;justify-content:space-around;text-align:center}.stat-value{display:block;font-size:1.5rem;font-weight:600}.stat-label{font-size:.8rem;opacity:.8;text-transform:uppercase;letter-spacing:.5px}.add-run-form{background:#2a2a2a;border-radius:16px;padding:1.5rem;margin-bottom:2rem}.form-row{display:flex;gap:.75rem;margin-bottom:1rem}.miles-input{width:100px;flex-shrink:0}.note-input{flex:1}.add-run-form input{padding:.75rem 1rem;border:2px solid #3a3a3a;border-radius:10px;background:#1a1a1a;color:#fff;font-size:1rem}.add-run-form input:focus{outline:none;border-color:#667eea}.add-run-form input::placeholder{color:#666}.add-btn{width:100%;padding:.875rem;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:10px;color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:opacity .2s,transform .2s}.add-btn:hover{opacity:.9;transform:translateY(-1px)}.runs-section{background:#2a2a2a;border-radius:16px;padding:1.5rem}.runs-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.runs-header h2{font-size:1.1rem;margin:0}.reset-btn{background:transparent;border:1px solid #555;color:#888;padding:.4rem .8rem;border-radius:6px;font-size:.8rem;cursor:pointer}.reset-btn:hover{border-color:#e74c3c;color:#e74c3c}.runs-list{list-style:none;padding:0;margin:0}.run-item{display:flex;justify-content:space-between;align-items:center;padding:1rem;background:#1a1a1a;border-radius:10px;margin-bottom:.75rem}.run-item:last-child{margin-bottom:0}.run-info{display:flex;flex-wrap:wrap;align-items:baseline;gap:.5rem}.run-miles{font-size:1.2rem;font-weight:600;color:#667eea}.run-date{color:#888;font-size:.85rem}.run-note{width:100%;color:#aaa;font-size:.85rem;font-style:italic}.delete-btn{background:transparent;border:none;color:#666;font-size:1.5rem;cursor:pointer;padding:0 .5rem;line-height:1}.delete-btn:hover{color:#e74c3c}.celebration{text-align:center;padding:1.5rem;background:linear-gradient(135deg,#f093fb,#f5576c);border-radius:16px;margin-top:2rem;font-size:1.2rem;font-weight:600;color:#fff;animation:pulse 2s infinite}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}@media(prefers-color-scheme:light){.add-run-form,.runs-section{background:#f5f5f5}.add-run-form input{background:#fff;border-color:#ddd;color:#333}.run-item{background:#fff}.runs-header h2{color:#333}}