/* ================================
   Blog Page Styles
   ================================ */

/* Blog Header */
.blog-header {
    padding: calc(var(--nav-height) + var(--spacing-xl)) 0 var(--spacing-lg);
    text-align: center;
    background: var(--color-gray-100);
}

.page-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: var(--font-weight-light);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    font-size: 1rem;
    color: var(--color-gray-500);
    font-weight: var(--font-weight-regular);
    letter-spacing: 0.1em;
}

/* Filters */
.blog-filters {
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-gray-200);
    position: sticky;
    top: var(--nav-height);
    background: var(--color-white);
    z-index: 50;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.625rem 1.25rem;
    background: transparent;
    border: 1px solid var(--color-gray-200);
    font-family: var(--font-family);
    font-size: 0.8125rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    cursor: pointer;
    transition: var(--transition-base);
}

.filter-tab:hover {
    border-color: var(--color-gray-400);
    color: var(--color-black);
}

.filter-tab.active {
    background: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
}

/* Blog Section */
.blog-section {
    padding: var(--spacing-xl) 0 var(--spacing-2xl);
    min-height: 50vh;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

/* Blog Card */
.blog-card {
    cursor: pointer;
    transition: var(--transition-base);
}

.blog-card:hover {
    transform: translateY(-8px);
}

.blog-card-image {
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--color-gray-100);
    margin-bottom: var(--spacing-md);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-image .image-placeholder {
    width: 100%;
    height: 100%;
    min-height: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: var(--font-weight-light);
    color: var(--color-gray-300);
    background: linear-gradient(135deg, var(--color-gray-100) 0%, var(--color-gray-200) 100%);
}

.blog-category {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xs);
}

.blog-card-title {
    font-size: 1.375rem;
    font-weight: var(--font-weight-medium);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
    transition: var(--transition-fast);
}

.blog-card:hover .blog-card-title {
    color: var(--color-gray-600);
}

.blog-card-excerpt {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.blog-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-gray-200);
}

.blog-date {
    font-size: 0.8125rem;
    color: var(--color-gray-400);
}

.read-more {
    font-size: 0.8125rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-black);
    letter-spacing: 0.02em;
    transition: var(--transition-fast);
}

.blog-card:hover .read-more {
    letter-spacing: 0.05em;
}

/* Blog Detail Modal */
.blog-detail-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.blog-detail-modal.hidden {
    display: none;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
}

.blog-detail {
    position: relative;
    background: var(--color-white);
    max-width: 800px;
    width: 100%;
    margin: var(--spacing-lg) 0;
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

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

.modal-close-btn {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
    z-index: 10;
}

.modal-close-btn:hover {
    background: var(--color-black);
    border-color: var(--color-black);
    color: var(--color-white);
}

.blog-detail-header {
    padding: var(--spacing-xl);
    text-align: center;
    border-bottom: 1px solid var(--color-gray-200);
}

.blog-detail-header .blog-category {
    margin-bottom: var(--spacing-md);
}

.blog-detail-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-medium);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.blog-detail-date {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.blog-detail-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-detail-image.hidden {
    display: none;
}

.blog-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.blog-detail-content {
    padding: var(--spacing-xl);
}

.blog-detail-content p {
    font-size: 1.0625rem;
    line-height: 1.9;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
}

.blog-detail-content p:last-child {
    margin-bottom: 0;
}

.blog-detail-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-gray-200);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 1px solid var(--color-black);
    font-family: var(--font-family);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: var(--transition-base);
}

.btn-back:hover {
    background: var(--color-black);
    color: var(--color-white);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--color-gray-500);
}

.empty-state.hidden {
    display: none;
}

/* Blog Footer */
.blog-footer {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-light);
    letter-spacing: 0.1em;
    color: var(--color-white);
    text-decoration: none;
}

.blog-footer p {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

/* Responsive */
@media (max-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .filter-tabs {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .filter-tab {
        flex-shrink: 0;
    }

    .blog-detail-modal {
        padding: 0;
    }

    .blog-detail {
        margin: 0;
        min-height: 100vh;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}