*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0f172a;--bg-card: #1e293b;--bg-hover: #334155;--text: #f1f5f9;--text-muted: #94a3b8;--accent: #f97316;--accent-hover: #fb923c;--success: #22c55e;--danger: #ef4444;--border: #334155;--radius: 12px}html{font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5;min-height:100dvh}a{color:var(--accent);text-decoration:none}button{cursor:pointer;border:none;border-radius:var(--radius);font-size:1rem;font-weight:600;padding:.75rem 1.5rem;transition:background .15s}.btn-primary{background:var(--accent);color:#fff}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:disabled{opacity:.5;cursor:not-allowed}.btn-outline{background:transparent;border:1px solid var(--border);color:var(--text)}.btn-outline:hover{background:var(--bg-hover)}.btn-icon{background:transparent;padding:.5rem;font-size:1.5rem;line-height:1}.card{background:var(--bg-card);border-radius:var(--radius);padding:1.25rem}.container{max-width:640px;margin:0 auto;padding:1rem}input,textarea,select{width:100%;padding:.75rem;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text);font-size:1rem}input:focus,textarea:focus,select:focus{outline:2px solid var(--accent);outline-offset:-1px}label{display:block;font-size:.85rem;color:var(--text-muted);margin-bottom:.25rem}.field{margin-bottom:1rem}.loading{display:flex;justify-content:center;align-items:center;min-height:50vh;color:var(--text-muted);font-size:1.1rem}.nav{display:flex;justify-content:space-around;position:fixed;bottom:0;left:0;right:0;background:var(--bg-card);border-top:1px solid var(--border);padding:.5rem 0;z-index:100}.nav a{display:flex;flex-direction:column;align-items:center;font-size:.7rem;color:var(--text-muted);padding:.25rem .75rem;gap:.15rem}.nav a.active{color:var(--accent)}.nav a span.icon{font-size:1.4rem}.page{padding-bottom:5rem}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;margin-bottom:1rem}.stat-box{background:var(--bg-card);border-radius:var(--radius);padding:1rem;text-align:center}.stat-box .value{font-size:1.5rem;font-weight:700;color:var(--accent)}.stat-box .label{font-size:.75rem;color:var(--text-muted);margin-top:.15rem}.activity-card{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.25rem;background:var(--bg-card);border-radius:var(--radius);margin-bottom:.5rem;cursor:pointer;transition:background .15s}.activity-card:hover{background:var(--bg-hover)}.activity-card .meta{font-size:.8rem;color:var(--text-muted)}.analysis-box{background:var(--bg-card);border-radius:var(--radius);padding:1.25rem;margin-top:1rem;white-space:pre-wrap;line-height:1.7}.feedback-row{display:flex;gap:.75rem;margin-top:1rem;justify-content:center}.strava-btn{display:inline-flex;align-items:center;gap:.5rem;background:#fc4c02;color:#fff;padding:1rem 2rem;border-radius:var(--radius);font-size:1.1rem;font-weight:700}.strava-btn:hover{background:#e84400}.header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1rem}.header h1{font-size:1.3rem}.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.7rem;font-weight:600;background:var(--bg-hover);color:var(--text-muted)}