/* ========== PUBLICATIONS PAGE ========== */
.work-des h1 {
    font-size: 25px;
    color: rgb(0, 0, 109);
    text-align: left;
    margin-top: 1%;
    font-weight: bold;
    border-left: 5px solid #0d6efd;
    padding-left: 0.5rem;
}
#left-hero img { height: 55px; width: 60px; }
#left-hero h1 {
    font-size: 45px;
    color: black;
    font-weight: bold;
    margin: 0;
}
.content-wrapper { margin-top: 2%; }
.work-hero-img { height: 60%; width: 50%; }
.todo-list {
    margin-top: 2%;
    font-size: 18px;
    list-style: none;
    padding-left: 0;
}
.todo-list li { margin-bottom: 10px; }
.order { color: rgb(0, 0, 109); font-weight: bold; }
.paper { color: black; }
.paper a { text-decoration: none; }
.paper a:hover { text-decoration: underline; }
#my_skills { margin-left: 1%; }
#my_skills h1 { padding-left: 1rem; border-left: 5px solid #0d6efd; }

/* ========== LAYOUT ========== */
.page-content {
    margin-top: 130px;
    margin-left: 2%;
    margin-right: 2%;
    padding: 0 5% 3rem 5%;
    max-width: 1850px;
    height: 100%;
}

/* ========== FILTER ========== */
.filter-row { margin: 1.5rem 0 2rem 0; display: flex; justify-content: flex-start; }
.filter-bar {
    background: #ffffff;
    border-radius: 60px;
    padding: 0.6rem 1.2rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.200);
    border: 1px solid #e2e8f0;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    width: auto;
}
.filter-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: rgb(0, 0, 109);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}
.filter-label i { font-size: 0.8rem; }
.desktop-filter { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.filter-btn {
    background: transparent;
    border: none;
    padding: 0.4rem 1rem;
    border-radius: 40px;
    font-size: 0.8rem;
    font-weight: 500;
    color: #4a5568;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    white-space: nowrap;
}
.filter-btn:hover { background: #eef2ff; color: rgb(0, 0, 109); }
.filter-btn.active { background: rgb(0, 0, 109); color: white; }
.mobile-filter { display: none; }
.filter-select-dropdown {
    padding: 0.5rem 2rem 0.5rem 1rem;
    border: 1px solid #cbd5e1;
    border-radius: 40px;
    font-size: 0.8rem;
    background: white;
    cursor: pointer;
    font-family: inherit;
    font-weight: 500;
    color: #4a5568;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%234a5568' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}
.filter-select-dropdown:focus { outline: none; border-color: rgb(0, 0, 109); }

/* ========== STATES ========== */
.section-item.hidden-section { display: none; }
.empty-message { text-align: center; padding: 3rem; color: #6c757d; font-size: 1.1rem; }
.empty-message i { font-size: 3rem; margin-bottom: 1rem; display: block; opacity: 0.5; }

/* ========== RESPONSIVE ========== */
@media only screen and (max-width: 991px) {
    #left-hero h1 { font-size: 30px; margin-top: 0; }
    #left-hero img { height: 40px; width: 45px; display: none; }
    .todo-list { font-size: 15px; margin-top: 5%; }
    .work-hero-img { height: 100%; width: 100%; }
    .work-des h1 { font-size: 25px; }
    #my_skills { margin-left: 5%; }
    .page-content { margin-top: 75px; padding: 0 1.5rem 2rem 1.5rem; }
    .desktop-filter { display: none; }
    .mobile-filter { display: block; }
    .filter-bar { width: 100%; justify-content: space-between; }
    .filter-row { width: 100%; }
}
@media (min-width: 768px) and (max-width: 1024px) {
    .desktop-filter { display: none; }
    .mobile-filter { display: block; }
    .filter-bar { width: 100%; justify-content: space-between; }
    .filter-row { width: 100%; }
}