/* ===== PUBLICATIONS HERO ===== */
.publications-hero {
    min-height: 35vh;
    display: flex;
    align-items: center;
    padding: 10px;
    background-color: var(--term-bg);
    position: relative;
    overflow: hidden;
}

.publications-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        0deg, transparent, transparent 2px,
        rgba(0,255,135,0.015) 2px, rgba(0,255,135,0.015) 4px
    );
    pointer-events: none;
}

.publications-hero h1 {
    font-family: var(--mono);
    font-size: clamp(2rem, 7vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
    color: var(--term-green);
    letter-spacing: -0.03em;
}

.publications-hero h1::before {
    content: '> ';
    opacity: 0.5;
    font-weight: 400;
}

.hero-subtitle {
    font-family: var(--mono);
    font-size: clamp(0.82rem, 2vw, 1rem);
    color: var(--term-comment);
    max-width: 560px;
    margin: 0 auto;
}

/* ===== PUBLICATIONS GRID ===== */
#publications-grid {
    min-height: calc(100vh - 250px);
    padding: 20px 0 100px;
    background-color: var(--bg-primary);
}

.publications-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* ===== PUBLICATION CARD ===== */
.publication-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.75rem;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.publication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.3s ease;
}

.publication-card:hover::before {
    transform: scaleY(1);
}

.publication-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 16px 40px var(--accent-glow);
}

.pdf-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #FF5F57 0%, #C41E3A 100%);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: white;
    letter-spacing: 0.05em;
}

.publication-title {
    font-family: var(--mono);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}

.publication-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 0.875rem;
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.meta-icon { width: 14px; height: 14px; }

.publication-description {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
    margin-bottom: 1.25rem;
}

.publication-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.25rem;
}

.tag {
    display: inline-block;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    padding: 3px 10px;
    border-radius: 3px;
    font-family: var(--mono);
    font-size: 0.72rem;
    font-weight: 500;
    transition: var(--transition);
}

.tag:hover {
    border-color: var(--accent);
    color: var(--accent);
    background-color: var(--accent-glow);
}

.publication-actions {
    display: flex;
    gap: 0.75rem;
}

.btn-view, .btn-download-small {
    flex: 1;
    padding: 10px 16px;
    border-radius: 6px;
    font-family: var(--mono);
    font-size: 0.78rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    letter-spacing: 0.02em;
}

.btn-view {
    background-color: #00ff87c9;
    color: #000;
}

.btn-view:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px var(--accent-glow);
    color: #000;
}

.btn-download-small {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-download-small:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

/* ===== LOADING STATE ===== */
.loading-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-secondary);
    font-family: var(--mono);
    font-size: 0.85rem;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 1.25rem;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== EMPTY STATE ===== */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1.25rem;
    opacity: 0.3;
}

.empty-state h3 {
    font-family: var(--mono);
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    font-family: var(--mono);
    font-size: 0.85rem;
}

/* ===== PDF MODAL ===== */
.pdf-modal .modal-content {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 0;
}

.pdf-modal .modal-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 1.5rem;
}

.pdf-modal .modal-title {
    font-family: var(--mono);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.btn-close-custom {
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--text-primary);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: var(--transition);
}

.btn-close-custom:hover {
    background-color: var(--border);
}

.pdf-modal .modal-body {
    padding: 0;
    background-color: var(--bg-secondary);
}

.pdf-viewer-container {
    width: 100%;
    height: calc(100vh - 140px);
}

.pdf-viewer-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.pdf-modal .modal-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 1.25rem 1.5rem;
}

.btn-download {
    font-family: var(--mono);
    background-color: var(--accent);
    color: #000;
    padding: 10px 22px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.82rem;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    display: inline-block;
}

.btn-download:hover {
    background-color: var(--accent-hover);
    color: #000;
    transform: translateY(-2px);
}

.btn-secondary-modal {
    font-family: var(--mono);
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 10px 22px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.82rem;
    transition: var(--transition);
    cursor: pointer;
}

.btn-secondary-modal:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .publications-hero {
        min-height: 25vh;
        padding: 60px 15px 30px;
    }

    #publications-grid { 
        padding: 20px 0 80px;
        min-height: calc(100vh - 200px);
    }

    .publications-container {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-top: 1rem;
    }

    .publication-card { padding: 1.25rem; }
    .publication-actions { flex-direction: column; }
    .btn-view, .btn-download-small { width: 100%; }
    .pdf-viewer-container { height: calc(100vh - 120px); }
}

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.publication-card {
    opacity: 0;
    animation: fadeInUp 0.5s ease forwards;
}

.publication-card:nth-child(1) { animation-delay: 0.1s; }
.publication-card:nth-child(2) { animation-delay: 0.2s; }
.publication-card:nth-child(3) { animation-delay: 0.3s; }
.publication-card:nth-child(4) { animation-delay: 0.4s; }
.publication-card:nth-child(5) { animation-delay: 0.5s; }
.publication-card:nth-child(6) { animation-delay: 0.6s; }

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}