:root{--bg-color:#f8fafc;--panel-bg:#fff;--panel-border:#e2e8f0;--text-primary:#0f172a;--text-secondary:#475569;--accent-color:#2563eb;--accent-hover:#1d4ed8;--success-color:#059669;--success-bg:#ecfdf5;--success-border:#a7f3d0;--next-bg:#eff6ff;--next-border:#bfdbfe;--font-family:"Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}.container{max-width:1200px;margin:0 auto;padding:3rem 1.5rem}.header{border-bottom:1px solid var(--panel-border);margin-bottom:2rem;padding-bottom:1.5rem}.header h1{color:var(--text-primary);letter-spacing:-.02em;margin-bottom:.5rem;font-size:2rem;font-weight:600}.header p{color:var(--text-secondary);font-size:1rem}.subject-tabs{gap:.5rem;margin-bottom:1.5rem;display:flex}.subject-tab{background:var(--panel-bg);border:1px solid var(--panel-border);color:var(--text-secondary);font-family:var(--font-family);cursor:pointer;border-radius:6px;padding:.5rem 1.25rem;font-size:.875rem;font-weight:500;transition:all .15s}.subject-tab:hover{color:var(--text-primary);background:#f1f5f9}.subject-tab.active{background:var(--text-primary);color:#fff;border-color:var(--text-primary)}.table-container{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:8px;overflow:hidden;box-shadow:0 1px 3px #0000000d}.data-table{border-collapse:collapse;text-align:left;width:100%}.data-table th{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);border-bottom:1px solid var(--panel-border);background:#f8fafc;padding:1rem 1.5rem;font-size:.75rem;font-weight:600}.data-table td{border-bottom:1px solid var(--panel-border);color:var(--text-primary);vertical-align:middle;padding:1rem 1.5rem;font-size:.875rem}.data-table tbody tr{border-left:3px solid #0000;transition:background-color .15s}.data-table tbody tr:hover td{background-color:#f8fafc}.data-table tbody tr:last-child td{border-bottom:none}.row-last-done{background-color:var(--success-bg);border-left-color:var(--success-color)!important}.row-last-done:hover td{background-color:#d1fae5!important}.row-next-up{background-color:var(--next-bg);border-left-color:var(--accent-color)!important}.row-next-up:hover td{background-color:#dbeafe!important}.status-badge{letter-spacing:.02em;border-radius:4px;align-items:center;padding:.25rem .6rem;font-size:.75rem;font-weight:600;display:inline-flex}.badge-last-done{background:var(--success-bg);color:var(--success-color);border:1px solid var(--success-border)}.badge-next-up{background:var(--next-bg);color:var(--accent-color);border:1px solid var(--next-border)}.text-bold{font-weight:600}.text-regular{font-weight:400}.btn-watch{color:var(--text-primary);border:1px solid var(--panel-border);font-family:var(--font-family);cursor:pointer;background:#fff;border-radius:6px;align-items:center;gap:.375rem;padding:.375rem .75rem;font-size:.8125rem;font-weight:500;transition:all .15s;display:inline-flex;box-shadow:0 1px 2px #00000005}.btn-watch:hover{background:#f1f5f9;border-color:#cbd5e1}.btn-watch svg{color:var(--text-secondary)}.modal-overlay{z-index:1000;opacity:0;visibility:hidden;background:#0f172ab3;justify-content:center;align-items:center;transition:all .2s;display:flex;position:fixed;inset:0}.modal-overlay.active{opacity:1;visibility:visible}.modal-content{background:var(--bg-color);border-radius:8px;width:90%;max-width:900px;transition:all .2s;position:relative;overflow:hidden;transform:scale(.98);box-shadow:0 20px 25px -5px #0000001a,0 10px 10px -5px #0000000a}.modal-overlay.active .modal-content{transform:scale(1)}.modal-header{background:var(--panel-bg);border-bottom:1px solid var(--panel-border);justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}.modal-title{color:var(--text-primary);font-size:1rem;font-weight:600}.btn-close{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;border-radius:4px;justify-content:center;align-items:center;padding:.25rem;transition:background .15s;display:flex}.btn-close:hover{color:var(--text-primary);background:#f1f5f9}.video-wrapper{background:#000;height:0;padding-bottom:56.25%;position:relative}.video-wrapper iframe{border:none;width:100%;height:100%;position:absolute;top:0;left:0}@media (width<=768px){.container{padding:1.5rem 1rem}.header h1{font-size:1.5rem}.data-table{white-space:nowrap;display:block;overflow-x:auto}}