.research-section{padding-bottom:4rem;padding-top:4rem}.news-filter-form{align-items:center;background:var(--white);border:1px solid rgba(0,0,0,.02);border-radius:var(--radius-2xl);box-shadow:0 10px 30px rgba(0,0,0,.05);display:flex;flex-wrap:wrap;gap:1.5rem;justify-content:center;margin-bottom:4rem;padding:2rem}.search-box-custom{flex:1;min-width:300px;position:relative}.search-box-custom input{background:var(--gray-50);border:2px solid var(--gray-200);border-radius:var(--radius-full);font-family:var(--font-thai);font-size:1rem;outline:none;padding:.9rem 1.5rem .9rem 3rem;transition:all .3s;width:100%}.search-box-custom input:focus{background:var(--white);border-color:var(--primary-light);box-shadow:0 0 0 4px rgba(211,47,47,.1)}.search-box-custom i{color:var(--gray-400);font-size:1.1rem;left:1.2rem;position:absolute;top:50%;transform:translateY(-50%)}.filter-btn-group{display:flex;gap:1rem}.btn-search-custom{align-items:center;background:var(--primary-gradient);border:none;border-radius:var(--radius-full);box-shadow:0 4px 10px rgba(211,47,47,.2);color:var(--white);cursor:pointer;display:inline-flex;font-weight:600;gap:.5rem;padding:.9rem 2rem;transition:all .3s ease}.btn-search-custom:hover{box-shadow:0 6px 15px rgba(211,47,47,.3);transform:translateY(-2px)}.btn-reset-custom{align-items:center;background:var(--gray-200);border-radius:var(--radius-full);color:var(--gray-700);display:inline-flex;font-weight:600;padding:.9rem 2rem;text-decoration:none;transition:all .3s ease}.btn-reset-custom:hover{background:var(--gray-300);color:var(--gray-900)}.search-result-info{color:#4b5563;margin-bottom:2rem}.show-all-link{color:var(--primary);margin-left:1rem;text-decoration:none}.research-list{gap:1rem}.research-card,.research-list{display:flex;flex-direction:column}.research-card{background:#fff;border:1px solid #e5e7eb;border-radius:8px;gap:.5rem;padding:1.25rem 1.5rem;transition:transform .2s ease,box-shadow .2s ease}.research-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.1);transform:translateY(-2px)}.research-card-top{align-items:flex-start;display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between}.research-title{color:#111827;flex:1;font-size:1.15rem;line-height:1.4;margin:0;padding-right:1rem}.research-actions{align-items:center;display:flex;flex-shrink:0;gap:1rem}.research-year{color:#6b7280;font-size:1rem}.research-btn-group{display:flex;gap:.5rem}.btn{align-items:center;border-radius:6px;display:inline-flex;font-size:.9rem;font-weight:500;gap:.35rem;padding:.25rem .75rem;text-decoration:none;transition:all .2s}.btn-pdf{background:var(--primary);color:#fff}.btn-pdf:hover{background:var(--primary-dark);color:#fff}.btn-external{background:#f3f4f6;color:#374151}.btn-external:hover{background:#e5e7eb;color:#111827}.research-author-row{align-items:flex-start;color:#4b5563;display:flex;font-size:.95rem;gap:.5rem}.teacher-link{color:var(--primary);text-decoration:none;transition:color .2s}.teacher-link:hover{color:var(--primary-dark);text-decoration:underline}.empty-state{background:#f9fafb;border:2px dashed #e5e7eb;border-radius:12px;color:#6b7280;padding:4rem;text-align:center}.empty-icon{color:#d1d5db;display:block;font-size:3rem;margin-bottom:1rem}.empty-state h3{color:#4b5563;margin-bottom:.5rem}@media (max-width:768px){.research-section{padding:2.5rem 15px}.news-filter-form{gap:1rem;padding:1.5rem}.search-box-custom{min-width:100%}.filter-btn-group{flex-direction:column;width:100%}.btn-reset-custom,.btn-search-custom{justify-content:center;width:100%}.research-card-top{flex-direction:column}.research-title{padding-right:0}.research-actions{justify-content:space-between;width:100%}}