body,html{margin:0;padding:0;box-sizing:border-box;font-family:Arial,sans-serif;width:100vw;max-width:100vw;overflow-x:hidden;background:#fafbfc}*{box-sizing:inherit}.main-container{padding:2rem}.health-btn{padding:.5rem 1rem;font-size:16px;cursor:pointer;border-radius:5px;border:1px solid #ccc;background:#fff;transition:background .2s}.health-btn:hover{background:#f0f0f0}.page-container{max-width:800px;margin:2rem auto;padding:2rem;background:#fff;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,.04)}.navbar__link{color:#fff;text-decoration:none;font-weight:500;transition:color .2s}.navbar__link:hover{color:#aad1ff}.courses-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;box-shadow:0 2px 8px rgba(0,0,0,.04);border-radius:8px;overflow:hidden;margin-bottom:2rem}.courses-table td,.courses-table th{padding:16px 14px;border-bottom:1px solid #eaeaea;text-align:left;font-size:16px}.courses-table th{background:#f5f7fa;font-weight:600;cursor:pointer;user-select:none;transition:background .2s}.courses-table th:hover{background:#e3eefd;color:#1976d2}.courses-table tr.even{background:#fafbfc}.courses-table tr.odd{background:#fff}.courses-table tr:hover{background:#f0f7ff}.courses-table td button{margin-right:6px}.table-scroll-x{width:100%;overflow-x:auto}@media (max-width:900px){.courses-table{min-width:700px}}@media (max-width:700px){.course-form,.main-container{padding:10px}.course-form{max-width:98vw}.courses-table td,.courses-table th{padding:10px 6px;font-size:15px}}.big-input,.course-form input[type=datetime-local],.course-form input[type=text],.course-form input[type=url]{width:100%;font-size:1.15rem;padding:12px 14px;border:1.5px solid #bfc8d6;border-radius:6px;margin-top:6px;margin-bottom:10px;background:#f7fafd;transition:border .2s}.big-input:focus,.course-form input:focus{border-color:#1976d2;outline:none;background:#fff}.big-textarea,.course-form textarea{width:100%;min-height:120px;font-size:1.1rem;padding:12px 14px;border:1.5px solid #bfc8d6;border-radius:6px;margin-top:6px;margin-bottom:10px;background:#f7fafd;resize:vertical;transition:border .2s}.big-textarea:focus,.course-form textarea:focus{border-color:#1976d2;outline:none;background:#fff}.course-form{max-width:600px;margin:32px auto;padding:32px 32px 24px;background:#fff;border-radius:10px;box-shadow:0 2px 16px rgba(0,0,0,.07);display:flex;flex-direction:column;gap:18px}.course-form h3{margin-bottom:18px;font-size:1.5rem;font-weight:700;color:#1976d2}.course-form label{font-size:1.1rem;font-weight:500;margin-bottom:6px;display:block}.course-form button[type=button],.course-form button[type=submit]{font-size:1.1rem;padding:10px 22px;border-radius:6px;border:none;background:#1976d2;color:#fff;font-weight:600;margin-top:8px;cursor:pointer;transition:background .2s}.course-form button[type=button]:hover,.course-form button[type=submit]:hover{background:#1256a3}.course-form input[type=checkbox]{margin-right:8px;transform:scale(1.2)}.course-form>div{margin-bottom:10px}.course-form-checkbox-row{display:flex;flex-direction:row;align-items:center;gap:24px;margin-bottom:10px}.btn{display:inline-block;padding:8px 18px;font-size:1rem;font-weight:600;border-radius:6px;border:none;cursor:pointer;margin:2px 4px 2px 0;transition:background .18s,color .18s,box-shadow .18s;box-shadow:0 1px 2px rgba(0,0,0,.03)}.btn-primary{background:#1976d2;color:#fff}.btn-primary:focus,.btn-primary:hover{background:#1256a3}.btn-secondary{background:#f5f7fa;color:#1976d2;border:1.5px solid #dbeafe}.btn-secondary:focus,.btn-secondary:hover{background:#e3eefd;color:#1256a3}.btn-danger{background:#e53935;color:#fff}.btn-danger:focus,.btn-danger:hover{background:#b71c1c}.sort-arrow{display:inline-block;margin-left:4px;font-size:1em;vertical-align:middle;min-width:1em;color:#1976d2;font-weight:700;opacity:.85}.tab-btn{background:#f5f7fa;color:#1976d2;border:1.5px solid #dbeafe;border-bottom:none;border-radius:8px 8px 0 0;font-size:1.08rem;font-weight:500;padding:10px 26px;margin-bottom:-2px;box-shadow:0 1px 2px rgba(0,0,0,.03);transition:background .18s,color .18s,box-shadow .18s;cursor:pointer;outline:none;position:relative;z-index:1}.tab-btn:focus,.tab-btn:hover{background:#e3eefd;color:#1256a3}.tab-btn-active,.tab-btn.tab-btn-active{background:#fff;color:#1976d2;font-weight:700;border-bottom:2.5px solid #fff;z-index:2;box-shadow:0 2px 8px rgba(25,118,210,.07)}.navbar{width:100%;padding:1rem 2rem;background:#222;color:#fff;display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;box-sizing:border-box}.navbar__brand{font-size:1.2rem}.navbar__brand,.navbar__login-btn{font-weight:700;color:#fff;text-decoration:none}.navbar__login-btn{background:#0070f3;padding:.5rem 1rem;border-radius:4px;border:none;transition:background .2s}.navbar__login-btn:hover{background:#005bb5}.course-overview-card{background:#fff;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,.07);padding:32px 28px 28px;margin-bottom:32px;max-width:900px;margin-left:auto;margin-right:auto}.course-title{font-size:2rem;font-weight:700;color:#1976d2;margin-bottom:18px}.course-overview-row{display:flex;flex-direction:row;gap:32px;align-items:flex-start;flex-wrap:wrap}.course-overview-info{flex:2 1 300px;display:flex;flex-direction:column;gap:18px}.course-overview-label{font-size:1.13rem;margin-bottom:6px;display:flex;flex-direction:column;gap:2px}.course-overview-label strong{color:#444;font-weight:600;margin-bottom:2px}.course-overview-images{flex:1 1 180px;display:flex;flex-direction:column;gap:16px;align-items:flex-end}.course-thumbnail{max-width:160px;max-height:120px;margin-bottom:8px}.course-cover,.course-thumbnail{border-radius:8px;box-shadow:0 1px 6px rgba(0,0,0,.08);background:#f5f7fa;object-fit:cover}.course-cover{max-width:320px;max-height:180px}@media (max-width:900px){.course-overview-row{flex-direction:column;gap:18px}.course-overview-images{flex-direction:row;gap:12px;align-items:center;justify-content:flex-start}.course-cover,.course-thumbnail{max-width:48vw;max-height:120px}}@media (max-width:600px){.course-overview-card{padding:12px 4vw 18px}.course-title{font-size:1.3rem}.course-overview-label{font-size:1rem}.course-cover,.course-thumbnail{max-width:90vw;max-height:90px}}