.spt-progress-tracker.spt-flexible{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;margin:20px 0;--understood-color:#e6f7e6;--mastered-color:#ffebcc;--primary-color:#0073aa;--border-color:#ddd;--background-color:#f9f9f9;line-height:1.6}.spt-no-data{text-align:center;padding:40px 20px;background:#f8f9fa;border:2px dashed #ddd;border-radius:8px;color:#666}.spt-no-data p{margin:10px 0;font-size:16px}.spt-subject-flexible{background:#fff;border:1px solid var(--border-color);border-radius:8px;margin-bottom:20px;box-shadow:0 2px 4px rgba(0,0,0,.1);overflow:hidden}.spt-subject-content{display:none !important;padding:20px;background:#fff}.spt-subject.expanded .spt-subject-content{display:block !important}.spt-subject-header{cursor:pointer;transition:background-color .2s ease;user-select:none;padding:15px 20px 12px;background:var(--background-color)}.spt-subject-header:hover{background-color:#f0f0f0}.spt-subject-title-container{width:100%}.spt-subject-title{margin:0 0 8px;color:#333;font-size:1.4em;display:flex;align-items:center;gap:10px;font-weight:600}.spt-subject-toggle{font-size:.8em;transition:transform .2s ease;display:inline-block;width:20px;text-align:center;color:var(--primary-color);font-weight:700}.spt-percent{font-weight:400;color:#666;font-size:.9em;margin-left:auto;background:#fff;padding:2px 8px;border-radius:12px;border:1px solid #ddd}.spt-progress-bar-header{height:6px;background:#f1f1f1;border-radius:3px;overflow:hidden;margin-top:8px;box-shadow:inset 0 1px 2px rgba(0,0,0,.1)}.spt-progress-fill-header{height:100%;transition:width .5s ease;border-radius:3px}.spt-chapters{display:grid;gap:12px}.spt-chapter{border:1px solid var(--border-color);border-radius:6px;overflow:hidden;transition:all .2s ease;background:#fff}.spt-chapter-content{display:none !important;padding:15px;background:#fff;border-top:1px solid var(--border-color)}.spt-chapter.expanded .spt-chapter-content{display:block !important}.spt-chapter:hover{box-shadow:0 2px 8px rgba(0,0,0,.1)}.spt-chapter.completed{border-color:#4caf50}.spt-chapter.mastered{border-color:#ff9800}.spt-chapter-header{background:var(--background-color);padding:12px 15px 8px;cursor:pointer;transition:background-color .2s ease}.spt-chapter-header:hover{background:#f0f0f0}.spt-chapter.completed .spt-chapter-header{background:var(--understood-color)}.spt-chapter.mastered .spt-chapter-header{background:var(--mastered-color)}.spt-chapter-title-container{width:100%}.spt-chapter-top{display:flex;align-items:center;gap:10px;margin-bottom:8px}.spt-chapter-toggle{width:20px;height:20px;display:flex;align-items:center;justify-content:center;background:#fff;border-radius:50%;font-weight:700;font-size:14px;box-shadow:0 1px 3px rgba(0,0,0,.2);transition:transform .2s ease;color:var(--primary-color)}.spt-chapter-title{flex:1;font-weight:600;font-size:16px;color:#333}.spt-chapter-percent{font-size:14px;color:#666;background:#fff;padding:2px 8px;border-radius:12px;font-weight:500;min-width:40px;text-align:center;border:1px solid #ddd}.spt-progress-bar-chapter{height:4px;background:#f1f1f1;border-radius:2px;overflow:hidden;margin-top:4px;box-shadow:inset 0 1px 1px rgba(0,0,0,.1)}.spt-progress-fill-chapter{height:100%;transition:width .5s ease;border-radius:2px}.spt-section{margin-bottom:15px;border:1px solid #e5e5e5;border-radius:4px;overflow:hidden;background:#fff}.spt-section.completed{border-color:#4caf50}.spt-section.mastered{border-color:#ff9800}.spt-section-header{background:#f8f8f8;padding:10px 12px 6px;font-weight:500;font-size:14px}.spt-section.completed .spt-section-header{background:var(--understood-color)}.spt-section.mastered .spt-section-header{background:var(--mastered-color)}.spt-section-title-container{display:flex;justify-content:space-between;align-items:center;margin-bottom:6px}.spt-section-title{color:#333}.spt-section-percent{font-size:12px;color:#666;background:#fff;padding:2px 6px;border-radius:8px;min-width:30px;text-align:center;border:1px solid rgba(0,0,0,.1)}.spt-progress-bar-section{height:3px;background:#f1f1f1;border-radius:1.5px;overflow:hidden;margin-top:2px;box-shadow:inset 0 1px 1px rgba(0,0,0,.1)}.spt-progress-fill-section{height:100%;transition:width .5s ease;border-radius:1.5px}.spt-items{padding:12px;display:grid;gap:8px}.spt-item{display:flex;justify-content:space-between;align-items:center;padding:12px;border:1px solid #f0f0f0;border-radius:4px;background:#fff;transition:all .2s ease}.spt-item:hover{border-color:#ddd;box-shadow:0 1px 3px rgba(0,0,0,.1)}.spt-item.understood{background:var(--understood-color);border-color:#c8e6c9}.spt-item.mastered{background:var(--mastered-color);border-color:#ffcc80}.spt-item-title{font-size:14px;font-weight:500;color:#333}.spt-item-checks{display:flex;gap:15px}.spt-check-label{display:flex;align-items:center;gap:5px;cursor:pointer;padding:6px 10px;border-radius:4px;transition:background-color .2s ease;font-size:13px;user-select:none;border:1px solid transparent}.spt-check-label:hover{background-color:rgba(0,115,170,.1);border-color:rgba(0,115,170,.2)}.spt-check-label input{cursor:pointer;margin:0}.spt-check-label span{font-weight:500}.spt-items-readonly{padding:12px;background:#f8f9fa;border-radius:4px;margin:12px}.spt-items-readonly p{margin:0 0 10px;font-size:13px;color:#666}.spt-items-list{display:flex;flex-wrap:wrap;gap:8px}.spt-item-readonly{background:#fff;padding:4px 8px;border-radius:12px;font-size:12px;color:#666;border:1px solid #e0e0e0}.spt-controls{display:flex;gap:10px;margin-top:20px;padding-top:15px;border-top:1px solid var(--border-color)}.spt-reset-btn{background:#f9f9f9;border:1px solid var(--border-color);border-radius:4px;padding:8px 16px;cursor:pointer;font-size:13px;color:#dc3232;transition:all .2s ease;font-weight:500}.spt-reset-btn:hover{background:#f0f0f0;border-color:#dc3232;color:#a00}.spt-countdown{background:var(--primary-color);color:#fff;text-align:center;padding:15px 20px;border-radius:6px;font-size:16px;font-weight:500;margin-top:20px}.spt-countdown-days{font-size:1.5em;font-weight:700;color:#ffeb3b;margin:0 5px}.spt-countdown.post-exam{background:#666;color:#ccc}.spt-no-structure,.spt-no-sections{text-align:center;color:#666;font-style:italic;padding:20px;background:var(--background-color);border-radius:6px;border:1px dashed var(--border-color);margin:15px 0}.spt-item.processing{opacity:.6;pointer-events:none;position:relative}.spt-item.processing:after{content:'';position:absolute;top:50%;right:10px;width:16px;height:16px;margin-top:-8px;border:2px solid #ddd;border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.spt-subject:not(.expanded) .spt-subject-content{display:none !important}.spt-chapter:not(.expanded) .spt-chapter-content{display:none !important}@media (max-width:768px){.spt-progress-tracker.spt-flexible{margin:15px 0}.spt-subject-flexible{margin-bottom:15px}.spt-subject-header{padding:12px 15px 10px}.spt-subject-title{font-size:1.2em;flex-wrap:wrap;gap:8px}.spt-percent{order:3;margin-left:0;margin-top:4px}.spt-subject-content{padding:15px}.spt-chapter-header{padding:10px 12px 6px}.spt-chapter-top{flex-wrap:wrap;gap:8px}.spt-chapter-percent{order:3;margin-top:4px}.spt-item{flex-direction:column;align-items:flex-start;gap:10px}.spt-item-checks{width:100%;justify-content:flex-start}.spt-check-label{min-height:40px;padding:8px 12px;background:rgba(255,255,255,.8);border:1px solid rgba(0,0,0,.1);border-radius:6px;flex:1;justify-content:center}.spt-controls{flex-direction:column}.spt-reset-btn{padding:12px 16px;font-size:14px}.spt-items-list{flex-direction:column;gap:4px}.spt-item-readonly{text-align:center}}@media (max-width:480px){.spt-subject-header{padding:10px 12px 8px}.spt-subject-content{padding:12px}.spt-chapter-header{padding:8px 10px 6px}.spt-chapter-content{padding:12px}.spt-section-header{padding:8px 10px 4px}.spt-items{padding:10px}.spt-item{padding:10px}.spt-countdown{padding:12px 15px;font-size:14px}.spt-countdown-days{font-size:1.3em}.spt-progress-bar-header{height:4px}.spt-progress-bar-chapter{height:3px}.spt-progress-bar-section{height:2px}}@media print{.spt-controls{display:none !important}.spt-chapter-content{display:block !important}.spt-subject-content{display:block !important}.spt-progress-tracker.spt-flexible{box-shadow:none}.spt-subject-flexible,.spt-chapter,.spt-section{box-shadow:none;break-inside:avoid}.spt-reset-btn{display:none}}.spt-subject-header:focus,.spt-chapter-header:focus,.spt-check-label:focus-within,.spt-reset-btn:focus{outline:2px solid var(--primary-color);outline-offset:2px}@media (prefers-contrast:high){.spt-progress-tracker.spt-flexible{--border-color:#000;--understood-color:#d4edda;--mastered-color:#fff3cd}.spt-item{border-width:2px}.spt-check-label:hover{background-color:#000;color:#fff}}.spt-progress-fill-header,.spt-progress-fill-chapter,.spt-progress-fill-section{position:relative;overflow:hidden}.spt-progress-fill-header:after,.spt-progress-fill-chapter:after,.spt-progress-fill-section:after{content:'';position:absolute;top:0;left:0;bottom:0;right:0;background-image:linear-gradient(-45deg,rgba(255,255,255,.2) 25%,transparent 25%,transparent 50%,rgba(255,255,255,.2) 50%,rgba(255,255,255,.2) 75%,transparent 75%,transparent);background-size:20px 20px;animation:move 2s linear infinite}@keyframes move{0%{background-position:0 0}100%{background-position:20px 20px}}.spt-subject.expanded .spt-subject-toggle{transform:rotate(90deg)}.spt-chapter.expanded .spt-chapter-toggle{transform:rotate(45deg)}.spt-subject-content,.spt-chapter-content{overflow:hidden;transition:all .3s ease}.spt-subject-flexible:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,.15)}.spt-chapter:hover{transform:translateY(-1px)}.spt-progress-tracker[data-interactive=false] .spt-chapter-header{cursor:default}.spt-progress-tracker[data-interactive=false] .spt-item-checks{display:none}.spt-progress-tracker[data-interactive=false] .spt-controls{display:none}