.lectures-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    max-width: 1400px;
    margin: 0 auto;
    padding-top: 120px;
    min-height: 100vh;
}

.lectures-sidebar {
    position: sticky;
    top: 120px;
    height: fit-content;
}

.lectures-sidebar h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.lectures-sidebar p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.lectures-feed {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 2rem;
}

.lecture-entry {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s ease;
}

.lecture-entry:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.lecture-entry-image {
    position: relative;
    aspect-ratio: 9/16;
    overflow: hidden;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.lecture-entry-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.5s ease;
    display: block;
}

.lecture-entry:hover .lecture-entry-image img {
    transform: scale(1.05);
}

.lecture-entry-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.6) 0%, transparent 50%);
}

.lecture-entry-date {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--gradient-primary);
    color: var(--bg-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    text-align: center;
    min-width: 50px;
}

.lecture-entry-date .day {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1;
}

.lecture-entry-date .month {
    display: block;
    font-size: 0.65rem;
    font-weight: 500;
    margin-top: 0.25rem;
    opacity: 0.9;
}

.lecture-entry-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    background: rgba(0, 240, 255, 0.2);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 240, 255, 0.3);
}

.lecture-entry-status.past {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    border-color: rgba(255, 255, 255, 0.15);
}

.lecture-entry-info {
    padding: 1.25rem;
}

.lecture-entry-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.lecture-entry-speaker {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
}

.lecture-entry-location {
    color: var(--text-muted);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.lecture-entry-location svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 3rem;
    padding-bottom: 4rem;
    grid-column: 1 / -1;
}

.page-link {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    transition: all 0.3s ease;
    background: transparent;
}

.page-link:hover,
.page-link.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--bg-primary);
}

.page-link.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

@media (max-width: 1024px) {
    .lectures-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .lectures-sidebar {
        position: relative;
        top: 0;
    }

    .lectures-feed {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }
}

body[data-theme="light"] .lecture-entry-image {
    background: var(--bg-tertiary);
}

body[data-theme="light"] .lecture-entry-image-overlay {
    background: none;
}

@media (max-width: 640px) {
    .lectures-feed {
        grid-template-columns: 1fr;
    }
}