:root{--text-dark:#1a1a3a;--white:#fff;--checkbox-color:#1a62ff;--border-radius:20px;--accent-color:#150a44}.course-catalog-wrapper{color:var(--text-dark);display:flex;gap:30px;margin:0 auto;max-width:1200px;padding:40px 20px}.catalog-sidebar{flex:0 0 280px}.filter-card{background-color:var(--white);border-radius:var(--border-radius);box-shadow:0 4px 15px rgba(0,0,0,.03);padding:30px}.filter-group{margin-bottom:25px}.filter-title{color:var(--accent-color);font-size:20px;font-weight:700;margin-bottom:15px;margin-top:0}.custom-checkbox{align-items:center;color:var(--accent-color);cursor:pointer;display:flex;font-size:16px;margin-bottom:12px;position:relative;user-select:none}.custom-checkbox input{cursor:pointer;height:0;opacity:0;position:absolute;width:0}.checkmark{align-items:center;background-color:#f0f0f0;border-radius:4px;display:flex;height:20px;justify-content:center;margin-right:12px;transition:all .2s;width:20px}.custom-checkbox:hover input~.checkmark{background-color:#e0e0e0}.custom-checkbox input:checked~.checkmark{background-color:var(--checkbox-color)}.checkmark:after{border:solid #fff;border-width:0 2px 2px 0;content:"";display:none;height:10px;transform:rotate(45deg);width:5px}.custom-checkbox input:checked~.checkmark:after{display:block}.catalog-main{flex:1}.catalog-header{align-items:center;display:flex;justify-content:space-between;margin-bottom:20px}.results-count{color:var(--accent-color);font-size:18px;font-weight:700}.search-bar{align-items:center;background-color:var(--white);border-radius:30px;display:flex;padding:10px 20px;width:300px}.search-icon{color:var(--accent-color);margin-right:10px}.search-bar input{border:none;font-size:16px;outline:none;width:100%}.search-bar input::placeholder{color:var(--accent-color)}.course-list{display:flex;flex-direction:column;gap:20px}.course-card{background-color:var(--white);border-radius:var(--border-radius);box-shadow:0 4px 15px rgba(0,0,0,.03);display:flex;overflow:hidden}.card-image{flex:0 0 250px}.card-image img{height:100%;object-fit:cover;width:100%}.card-content{display:flex;flex:1;flex-direction:column;padding:30px}.course-title{color:var(--accent-color);font-size:25px;font-weight:700;margin:0 0 10px}.course-description{color:var(--accent-color);font-size:16px;line-height:1.5;margin-bottom:auto}.card-middle{align-items:center;display:flex;justify-content:space-between;margin-top:20px}.stars{color:#ffc107;font-size:22px;letter-spacing:2px}.empty-star{color:#e0e0e0}.course-price{color:var(--accent-color);font-size:26px;font-weight:800}.card-divider{border:0;border-top:1px solid #eee;margin:15px 0;width:100%}.author-info,.card-footer{align-items:center;display:flex}.author-info{gap:10px}.author-avatar{border-radius:50%;height:35px;object-fit:cover;width:35px}.author-name{color:var(--accent-color);font-size:16px;font-weight:600}@media (max-width:900px){.course-catalog-wrapper{flex-direction:column;gap:20px;padding:20px 15px}.catalog-sidebar{flex:auto;width:100%}.filter-card{padding:20px}.catalog-header{align-items:flex-start;flex-direction:column;gap:15px}.search-bar{box-sizing:border-box;width:100%}.course-card{flex-direction:column}.card-image{flex:none;height:220px;width:100%}.card-content{padding:20px}.course-title{font-size:1.2rem}.card-middle{align-items:flex-start;flex-direction:column;gap:5px;margin-top:15px}.course-price{font-size:1.3rem}}