*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --blue:#2563EB;--blue-l:#EFF6FF;--blue-m:#BFDBFE;
  --slate:#0F172A;--s2:#1E293B;--s3:#334155;--muted:#64748B;
  --border:#E2E8F0;--surface:#fff;--bg:#F8FAFC;
  --green:#16A34A;--red:#DC2626;
  --r:10px;--rs:7px;
  --sh:0 1px 3px rgba(0,0,0,.07),0 1px 2px rgba(0,0,0,.04);
}
body{font-family:'Inter',sans-serif;background:var(--bg);color:var(--slate);min-height:100vh;display:flex;flex-direction:column;font-size:13px;line-height:1.5}

/* Header */
.hdr{height:52px;background:var(--surface);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 1.1rem;position:sticky;top:0;z-index:50;box-shadow:var(--sh)}
.brand{display:flex;align-items:center;gap:.6rem}
.b-icon{width:32px;height:32px;border-radius:8px;background:var(--blue);display:flex;align-items:center;justify-content:center;color:#fff;font-size:.85rem;box-shadow:0 2px 8px rgba(37,99,235,.35)}
.b-text h1{font-size:.9rem;font-weight:700;color:var(--slate);letter-spacing:-.2px}
.b-text p{font-size:.7rem;color:var(--muted)}
.hdr-r{display:flex;align-items:center;gap:.4rem}
.live-pill{background:#FEF2F2;color:var(--red);border:1px solid #FECACA;font-size:.65rem;font-weight:700;padding:2px 7px;border-radius:99px;letter-spacing:.4px;display:none;align-items:center;gap:3px}
.live-pill .dot{width:5px;height:5px;border-radius:50%;background:var(--red);animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}
.icon-btn{width:30px;height:30px;border-radius:var(--rs);border:1px solid var(--border);background:transparent;color:var(--muted);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:.8rem;transition:all .15s}
.icon-btn:hover{background:var(--blue-l);color:var(--blue);border-color:var(--blue-m)}

/* Page wrapper */
.page{max-width:none;margin:0 auto;padding:.9rem 1rem 2rem;width:90%}

/* Main 3-column grid */
.grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr) minmax(0,1fr);gap:.9rem;align-items:start}

/* Col 1 - video */
.c1{display:flex;flex-direction:column;gap:.7rem}
.video-wrap{position:relative;background:#000;border-radius:var(--r);overflow:hidden;aspect-ratio:4/3;box-shadow:var(--sh)}
#webcam{width:100%;height:100%;object-fit:cover;display:block;transform:scaleX(-1)}
#overlay{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.v-badge{position:absolute;top:.55rem;left:.55rem;background:rgba(0,0,0,.55);backdrop-filter:blur(6px);color:#fff;font-size:.65rem;font-weight:700;padding:3px 9px;border-radius:99px;display:none;align-items:center;gap:4px}
.v-badge .dot{width:5px;height:5px;border-radius:50%;background:#22C55E;animation:pulse 1.2s infinite}
.ctrls{display:flex;gap:.5rem;justify-content:center}
.btn{display:inline-flex;align-items:center;gap:.4rem;padding:.48rem 1rem;border-radius:var(--rs);font-size:.8rem;font-weight:600;border:none;cursor:pointer;transition:all .15s;white-space:nowrap}
.btn-p{background:var(--blue);color:#fff;box-shadow:0 2px 6px rgba(37,99,235,.28)}
.btn-p:hover:not(:disabled){background:#1D4ED8}
.btn-d{background:#FEF2F2;color:var(--red);border:1px solid #FECACA}
.btn-d:hover:not(:disabled){background:#FEE2E2}
.btn:disabled{opacity:.4;cursor:not-allowed}
.loader{width:16px;height:16px;border-radius:50%;border:2px solid var(--border);border-top-color:var(--blue);animation:spin 1s linear infinite;display:none;margin-left:auto;flex-shrink:0}
@keyframes spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.loader{animation:none}}
.chart-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:.75rem .75rem .4rem;display:none;box-shadow:var(--sh)}
.chart-card h3{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin-bottom:.5rem;display:flex;align-items:center}

/* Panel shell */
.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
.ph{padding:.55rem .75rem;border-bottom:1px solid var(--border);background:var(--bg);display:flex;align-items:center;gap:.45rem}
.ph i{color:var(--blue);font-size:.75rem}
.ph h2{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.55px;color:var(--s3)}

/* Col 2 - Status metrics */
.metrics-list{display:flex;flex-direction:column;gap:1px;background:var(--border)}
.m-row{display:flex;align-items:center;gap:.55rem;padding:.5rem .7rem;background:var(--surface);transition:background .15s;cursor:default}
.m-row:hover{background:var(--blue-l)}
.m-ico{width:26px;height:26px;min-width:26px;border-radius:6px;background:var(--blue-l);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:.7rem}
.m-body{flex:1;min-width:0}
.m-lbl{font-size:.65rem;font-weight:700;text-transform:uppercase;letter-spacing:.45px;color:var(--muted);display:flex;align-items:center;gap:.3rem}
.m-val{font-size:.78rem;color:var(--s2);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:1px}
.m-sub{font-size:.68rem;color:var(--muted)}
.trend-badge{font-size:.75rem;line-height:1;padding:1px 3px;border-radius:4px;background:var(--blue-l);color:var(--blue)}

/* Col 3 - Suggestions + Overall */
.c3{display:flex;flex-direction:column;gap:.9rem}
.sug-list{list-style:none;display:flex;flex-direction:column;gap:.35rem;padding:.6rem .7rem}
.sug-list li{display:flex;align-items:flex-start;gap:.45rem;font-size:.78rem;color:var(--s3);line-height:1.45}
.sug-list li i{color:var(--blue);font-size:.7rem;margin-top:.18rem;flex-shrink:0}
.overall-body{padding:.65rem .75rem;font-size:.8rem;font-weight:500;color:var(--s2);line-height:1.6}

/* Video upload (below main grid, full width) */
.upload-wrap{margin-top:1rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;box-shadow:var(--sh)}
.upload-hdr{padding:.6rem .85rem;border-bottom:1px solid var(--border);background:var(--bg);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.5rem}
.upload-hdr-l{display:flex;align-items:center;gap:.5rem}
.upload-hdr-l i{color:var(--blue);font-size:.85rem}
.upload-hdr-l h2{font-size:.85rem;font-weight:700;color:var(--slate)}
.upload-hdr p{font-size:.75rem;color:var(--muted)}
.upload-body{padding:.85rem}
.drop-zone{border:2px dashed var(--border);border-radius:var(--rs);padding:1.1rem;text-align:center;cursor:pointer;transition:all .15s;background:var(--bg);margin-bottom:.7rem}
.drop-zone:hover{border-color:var(--blue);background:var(--blue-l)}
.drop-zone i{font-size:1.3rem;color:var(--muted);margin-bottom:.35rem}
.drop-zone p{font-size:.78rem;color:var(--muted)}
.drop-zone strong{color:var(--blue)}
.upload-ctrls{display:flex;align-items:center;gap:.6rem}
#videoFileInput{display:none}

/* Score grid */
#videoResults{margin-top:1rem}
#videoResults .sec-title{font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);display:flex;align-items:center;gap:.35rem;margin-bottom:.55rem}
#videoResults .sec-title i{color:var(--blue)}
.score-grid{display:flex;flex-wrap:wrap;gap:.55rem;margin-bottom:1rem}
.score-card{flex:1 1 90px;background:var(--bg);border:1px solid var(--border);border-radius:var(--rs);padding:.6rem .7rem;text-align:center}
.score-card-overall{border-color:var(--blue-m);background:var(--blue-l)}
.score-label{font-size:.65rem;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.4px;display:block;margin-bottom:.25rem}
.score-value{font-size:1.5rem;font-weight:700;color:var(--blue);line-height:1}

/* Timeline */
.timeline-table-wrap{overflow-x:auto;border-radius:var(--rs);border:1px solid var(--border)}
.timeline-table{width:100%;border-collapse:collapse;font-size:.75rem;background:var(--surface)}
.timeline-table th{background:var(--s2);color:#fff;padding:.5rem .7rem;text-align:center;white-space:nowrap;font-weight:600;font-size:.68rem}
.timeline-table td{padding:.4rem .7rem;text-align:center;border-bottom:1px solid var(--border);color:var(--s3)}
.timeline-table tbody tr:hover{background:var(--blue-l)}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.5);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000}
.modal-box{background:var(--surface);border-radius:14px;padding:1.5rem;max-width:500px;width:90%;box-shadow:0 10px 40px rgba(0,0,0,.14);border:1px solid var(--border)}
.modal-box h2{font-size:.95rem;font-weight:700;color:var(--slate);margin-bottom:.3rem;display:flex;align-items:center;gap:.5rem}
.modal-box h2 i{color:var(--blue)}
.summary-duration{font-size:.78rem;color:var(--muted);margin-bottom:.85rem}
.summary-issue{margin-top:.6rem;font-weight:600;color:var(--red);font-size:.825rem}
.summary-best{margin-top:.3rem;font-weight:600;color:var(--green);font-size:.825rem}

/* Responsive */
@media(max-width:960px){.grid{grid-template-columns:1fr 1fr}.c1{grid-column:1/-1}}
@media(max-width:600px){.grid{grid-template-columns:1fr}.page{padding:.6rem .6rem 2rem}}