/* ===================================
   Blog Page Styles
   TJ Test Prep by EduAvenues®
   =================================== */

/* ===================================
   Blog Hero Section
   =================================== */
.blog-hero {
    position: relative;
    padding: calc(80px + var(--space-4xl)) 0 var(--space-4xl);
    overflow: hidden;
    min-height: 380px;
}

.blog-hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.blog-hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.blog-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        160deg,
        rgba(0, 46, 84, 0.88) 0%,
        rgba(0, 46, 84, 0.82) 40%,
        rgba(0, 51, 90, 0.85) 100%
    );
}

/* Decorative elements */
.blog-hero-overlay::before {
    content: '';
    position: absolute;
    top: -150px;
    right: -100px;
    width: 400px;
    height: 400px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.blog-hero-overlay::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: 10%;
    width: 300px;
    height: 300px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 50%;
}

.blog-hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.blog-hero-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-lg);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-lg);
}

.blog-hero-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: clamp(2.25rem, 4vw + 1rem, 3.5rem);
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.blog-hero-subtitle {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    margin: 0;
}

/* ===================================
   Blog Content Section
   =================================== */
.blog-content {
    background: var(--color-off-white);
    padding: var(--space-3xl) 0 var(--space-4xl);
    min-height: 60vh;
}

/* Blog Controls */
.blog-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

.blog-filters {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.625rem 1.25rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-base);
}

.filter-btn:hover {
    border-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* Blog Search */
.blog-search {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    padding: 0 var(--space-md);
    transition: var(--transition-base);
}

.blog-search:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(1, 138, 253, 0.1);
}

.blog-search .search-icon {
    color: var(--color-gray-400);
    flex-shrink: 0;
}

.blog-search-input {
    width: 220px;
    padding: var(--space-sm) 0;
    border: none;
    background: transparent;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-gray-700);
    outline: none;
}

.blog-search-input::placeholder {
    color: var(--color-gray-400);
}

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

/* Blog Card */
.blog-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    border: 1px solid var(--color-gray-100);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: transparent;
}

.blog-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.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-category {
    position: absolute;
    top: var(--space-md);
    left: var(--space-md);
    padding: 4px 10px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
}

.blog-card-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.4;
    margin-bottom: var(--space-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-title a {
    color: inherit;
    transition: var(--transition-fast);
}

.blog-card-title a:hover {
    color: var(--color-accent);
}

.blog-card-excerpt {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
    line-height: 1.6;
    margin-bottom: var(--space-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-gray-100);
}

.blog-card-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.blog-card-author-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

.blog-card-author-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray-700);
}

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

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

/* ===================================
   Empty State
   =================================== */
.blog-empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-4xl) var(--space-xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--color-gray-200);
}

.empty-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, rgba(1, 138, 253, 0.1) 0%, rgba(1, 138, 253, 0.05) 100%);
    border-radius: 50%;
    margin-bottom: var(--space-xl);
    color: var(--color-accent);
}

.blog-empty-state h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-md);
}

.blog-empty-state p {
    font-size: 1rem;
    color: var(--color-gray-500);
    max-width: 500px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

/* ===================================
   Featured Post (for future use)
   =================================== */
.blog-featured {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-xl);
}

.blog-featured-image {
    position: relative;
    min-height: 400px;
    overflow: hidden;
}

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

.blog-featured-content {
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-featured-label {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.blog-featured-label svg {
    width: 16px;
    height: 16px;
}

.blog-featured-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-gray-900);
    line-height: 1.3;
    margin-bottom: var(--space-md);
}

.blog-featured-excerpt {
    font-size: 1rem;
    color: var(--color-gray-500);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

/* ===================================
   Pagination
   =================================== */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    margin-top: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-gray-200);
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.625rem 1rem;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-base);
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-pages {
    display: flex;
    gap: var(--space-xs);
}

.page-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: var(--transition-base);
}

.page-btn:hover {
    border-color: var(--color-gray-300);
}

.page-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* ===================================
   Subscribe Section
   =================================== */
.blog-subscribe {
    background: var(--color-white);
    padding: var(--space-4xl) 0;
}

.subscribe-card {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    background: linear-gradient(135deg, #f8fafc 0%, var(--color-off-white) 100%);
    border: 1px solid var(--color-gray-100);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl) var(--space-3xl);
}

.subscribe-icon {
    width: 64px;
    height: 64px;
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    flex-shrink: 0;
}

.subscribe-content {
    flex: 1;
}

.subscribe-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--space-xs);
}

.subscribe-content p {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
    margin: 0;
    max-width: 480px;
}

.subscribe-form {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.subscribe-input {
    width: 280px;
    padding: var(--space-md) var(--space-lg);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    color: var(--color-gray-700);
    outline: none;
    transition: var(--transition-base);
}

.subscribe-input:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(1, 138, 253, 0.1);
}

.subscribe-input::placeholder {
    color: var(--color-gray-400);
}

/* ===================================
   Responsive Styles
   =================================== */
@media (max-width: 1024px) {
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .blog-featured {
        grid-template-columns: 1fr;
    }
    
    .blog-featured-image {
        min-height: 300px;
    }
    
    .subscribe-card {
        flex-direction: column;
        text-align: center;
        gap: var(--space-xl);
    }
    
    .subscribe-content p {
        max-width: none;
    }
    
    .subscribe-form {
        width: 100%;
        max-width: 500px;
    }
    
    .subscribe-input {
        flex: 1;
        width: auto;
    }
}

@media (max-width: 768px) {
    .blog-hero {
        padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
    }
    
    .blog-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .blog-filters {
        justify-content: center;
    }
    
    .blog-search {
        justify-content: center;
    }
    
    .blog-search-input {
        width: 100%;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .blog-card-image {
        height: 180px;
    }
    
    .blog-pagination {
        flex-wrap: wrap;
    }
    
    .subscribe-form {
        flex-direction: column;
    }
    
    .subscribe-input {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .blog-hero-title {
        font-size: 1.875rem;
    }
    
    .blog-hero-subtitle {
        font-size: 1rem;
    }
    
    .filter-btn {
        padding: 0.5rem 0.875rem;
        font-size: 0.8125rem;
    }
    
    .blog-empty-state {
        padding: var(--space-2xl) var(--space-lg);
    }
    
    .empty-icon {
        width: 80px;
        height: 80px;
    }
    
    .empty-icon svg {
        width: 48px;
        height: 48px;
    }
    
    .blog-empty-state h3 {
        font-size: 1.25rem;
    }
    
    .subscribe-card {
        padding: var(--space-xl);
    }
    
    .subscribe-icon {
        width: 56px;
        height: 56px;
    }
}