/* ============================
   CSS Variables
   ============================ */
:root {
    --accent: #FF5A00;
    --accent-dark: #E04D00;
    --accent-light: #FF7A30;
    --accent-glow: rgba(255, 90, 0, 0.2);
    --accent-bg: rgba(255, 90, 0, 0.06);
    
    --bg-primary: #FDFBF7;
    --bg-secondary: #F8F5EE;
    --bg-card: #FFFFFF;
    --bg-dark: #1A1D23;
    --bg-dark-secondary: #22262E;
    
    --text-primary: #0B1020;
    --text-secondary: #3D4048;
    --text-tertiary: #6B6F78;
    --text-light: #8F939D;
    --text-white: #FFFFFF;
    --text-white-secondary: #B8BDC6;
    
    --border-color: #E8E4DA;
    --border-light: rgba(0, 0, 0, 0.06);
    
    --gradient-accent: linear-gradient(135deg, #FF5A00 0%, #E04D00 100%);
    
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-card-hover: 0 16px 48px rgba(0, 0, 0, 0.12);
    
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --radius-2xl: 36px;
    --radius-full: 999px;
    
    --transition-fast: 0.2s ease;
    --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-heading: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
    --max-width: 1200px;
    --max-width-wide: 1400px;
}

/* ============================
   Reset & Base Styles
   ============================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--max-width-wide);
    margin: 0 auto;
    padding: 0 2rem;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================
   Blog Header (Hero)
   ============================ */
.blog-header {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(145deg, rgba(20, 20, 25, 0.75) 0%, rgba(15, 15, 18, 0.85) 100%),
                url('../assets/images/technical.webp');
    background-size: cover;
    background-position: center;
    overflow: hidden;
    padding-top: 80px;
}

.blog-header::before {
    content: '';
    position: absolute;
    top: -150px;
    right: -100px;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 90, 0, 0.04) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.blog-header::after {
    content: '';
    position: absolute;
    bottom: -200px;
    left: -150px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(255, 90, 0, 0.03) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.blog-header .container {
    width: 100%;
    position: relative;
    z-index: 2;
}

.blog-header-grid {
    display: grid;
    grid-template-columns: 2fr;
    gap: 4rem;
    align-items: center;
}

.blog-header-text-col {
    animation: fadeInUp 0.8s ease-out;
}

.blog-header-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    color: #B0B0B0;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 2px;
    padding: 0.45rem 1.1rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(255, 255, 255, 0.08);
    text-transform: uppercase;
    margin-bottom: 1.2rem;
}

.badge-icon {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.blog-header-heading {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.18;
    color: var(--text-white);
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
}

.blog-header-title-bold {
    color: var(--accent-dark);
    font-weight: 900;
}

.blog-header-subtext {
    font-size: 1.05rem;
    color: var(--text-white);
    line-height: 1.7;
    max-width: var(--max-width-wide);
    margin-bottom: 0;
}

/* ============================
   Blog Filters
   ============================ */
.blog-filters-section {
    padding: 2rem 0 1.5rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.blog-filters-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    flex-wrap: wrap;
}

.blog-categories {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-tertiary);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.filter-btn.active {
    background: var(--gradient-accent);
    color: #FFFFFF;
    border-color: var(--accent);
}

.blog-search {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.blog-search input {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.85rem;
    min-width: 220px;
    outline: none;
    transition: border-color var(--transition-fast);
}

.blog-search input:focus {
    border-color: var(--accent);
}

.blog-search input::placeholder {
    color: var(--text-light);
}

.blog-search button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.blog-search button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ============================
   Featured Article
   ============================ */
.featured-article-section {
    padding: 3rem 0 2rem;
    background: var(--bg-primary);
}

.featured-article-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
    transition: all var(--transition-smooth);
}

.featured-article-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-4px);
}

.featured-article-image {
    position: relative;
    height: 100%;
    min-height: 320px;
    overflow: hidden;
}

.featured-article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.featured-badge {
    position: absolute;
    top: 1.2rem;
    left: 1.2rem;
    background: var(--gradient-accent);
    color: #FFFFFF;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.3rem 1rem;
    border-radius: var(--radius-full);
}

.featured-article-content {
    padding: 2.5rem 2.5rem 2.5rem 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.article-category {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 0.8rem;
}

.featured-article-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.featured-article-excerpt {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.featured-article-meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.8rem;
}

.article-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.author-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.article-author span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.article-date,
.article-read-time {
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.article-date i,
.article-read-time i {
    margin-right: 0.3rem;
}

.featured-cta {
    align-self: flex-start;
}

/* ============================
   Blog Grid
   ============================ */
.blog-grid-section {
    padding: 2rem 0 4rem;
    background: var(--bg-primary);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(255, 90, 0, 0.15);
}

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

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.06);
}

.article-category-badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    color: #FFFFFF;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-full);
}

.blog-card-body {
    padding: 1.5rem 1.5rem 1.2rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card-title {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 0.7rem;
    transition: color var(--transition-fast);
}

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

.blog-card-excerpt {
    font-size: 0.85rem;
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: 1.2rem;
    flex: 1;
}

.blog-card-footer {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.article-meta-simple {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.meta-author {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
}

.meta-date,
.meta-read-time {
    font-size: 0.75rem;
    color: var(--text-light);
}

.blog-read-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.blog-read-link i {
    transition: transform var(--transition-fast);
}

.blog-read-link:hover {
    color: var(--accent-dark);
}

.blog-read-link:hover i {
    transform: translateX(4px);
}

/* ============================
   Blog Pagination
   ============================ */
.blog-pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.pagination-btn {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.pagination-btn.active {
    background: var(--gradient-accent);
    color: #FFFFFF;
    border-color: var(--accent);
}

.pagination-btn.next {
    width: auto;
    padding: 0 1.2rem;
}

/* ============================
   Blog Newsletter
   ============================ */
.blog-newsletter {
    padding: 3rem 0;
    background: var(--bg-secondary);
}

.newsletter-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 3rem 4rem;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-card);
}

.newsletter-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
    margin-bottom: 0.8rem;
}

.newsletter-badge i {
    font-size: 0.85rem;
}

.newsletter-heading {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.8rem;
    letter-spacing: -0.5px;
}

.newsletter-description {
    font-size: 0.95rem;
    color: var(--text-tertiary);
    max-width: 1200px;
    margin: 0 auto 1.8rem;
    line-height: 1.6;
}

.newsletter-form {
    display: flex;
    gap: 1rem;
    max-width: 480px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 0.8rem 1.2rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.newsletter-form input:focus {
    border-color: var(--accent);
}

.newsletter-form input::placeholder {
    color: var(--text-light);
}

.newsletter-btn {
    padding: 0.8rem 1.8rem;
    flex-shrink: 0;
}

.newsletter-note {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 1rem;
}

/* ============================
   CTA Banner Section
   ============================ */
.cta-banner {
    padding: 4.5rem 0;
    background: var(--bg-secondary);
}

.cta-banner-content {
    background: var(--bg-dark);
    border-radius: var(--radius-2xl);
    padding: 3.5rem 3rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 3rem;
    flex-wrap: wrap;
    box-shadow: var(--shadow-xl);
}

.cta-banner-text {
    flex: 1;
    min-width: 300px;
}

.cta-banner-title {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    line-height: 1.3;
    color: var(--text-white);
}

.cta-banner-description {
    color: var(--text-white-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.cta-banner-btn {
    font-size: 1rem;
    padding: 0.95rem 2.5rem;
    flex-shrink: 0;
}

/* ============================
   Footer
   ============================ */
.footer {
    background: var(--bg-dark);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col {
    color: var(--text-white-secondary);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-bottom: 1.2rem;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-white);
}

.footer-logo img {
    height: 80px;
    width: auto;
}

.footer-logo-text {
    color: var(--text-white);
}

.footer-brand-text {
    color: var(--text-white-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    font-weight: 500;
}

.footer-brand-description {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-bottom: 1.5rem;
}

.footer-cta {
    display: inline-flex;
    font-size: 0.85rem;
}

.footer-heading {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-white);
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.7rem;
}

.footer-links a {
    color: var(--text-white-secondary);
    font-size: 0.85rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-light);
}

.footer-subscribe-form {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
    margin-bottom: 1.5rem;
}

.subscribe-input {
    background: var(--bg-dark-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.subscribe-input:focus {
    border-color: var(--accent);
}

.subscribe-input::placeholder {
    color: var(--text-light);
}

.subscribe-btn {
    background: var(--gradient-accent);
    color: #FFFFFF;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.subscribe-btn:hover {
    box-shadow: 0 4px 20px rgba(255, 90, 0, 0.3);
    transform: translateY(-1px);
}

.footer-social {
    display: flex;
    gap: 0.7rem;
}

.social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-dark-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white-secondary);
    font-size: 0.85rem;
    transition: all var(--transition-smooth);
    border: 1px solid transparent;
}

.social-link:hover {
    background: var(--accent);
    color: #FFFFFF;
    border-color: var(--accent);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.8rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copyright {
    color: var(--text-light);
    font-size: 0.8rem;
}

.footer-legal {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}

.footer-legal a {
    color: var(--text-light);
    font-size: 0.8rem;
    transition: color var(--transition-fast);
}

.footer-legal a:hover {
    color: var(--accent-light);
}

.legal-separator {
    color: var(--text-light);
}

/* ============================
   Animations
   ============================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================
   Responsive Design
   ============================ */
@media (max-width: 1024px) {
    .blog-header-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }
    
    .blog-header-subtext {
        margin-left: auto;
        margin-right: auto;
    }
    
    .blog-header-heading {
        font-size: 2.6rem;
    }
    
    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .featured-article-card {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .featured-article-image {
        min-height: 250px;
    }
    
    .featured-article-content {
        padding: 2rem;
    }
    
    .featured-article-title {
        font-size: 1.6rem;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
    
    .blog-header {
        padding: 7rem 0 4rem;
        min-height: 80vh;
    }
    
    .blog-header-heading {
        font-size: 2rem;
    }
    
    .blog-filters-wrapper {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }
    
    .blog-categories {
        justify-content: center;
    }
    
    .blog-search input {
        min-width: unset;
        width: 100%;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .featured-article-title {
        font-size: 1.4rem;
    }
    
    .featured-article-meta {
        gap: 1rem;
    }
    
    .newsletter-card {
        padding: 2rem 1.5rem;
    }
    
    .newsletter-heading {
        font-size: 1.5rem;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .newsletter-btn {
        width: 100%;
        justify-content: center;
    }
    
    .cta-banner-content {
        flex-direction: column;
        text-align: center;
        padding: 2.5rem 1.5rem;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }
    
    .blog-header-heading {
        font-size: 1.7rem;
    }
    
    .blog-header-subtext {
        font-size: 0.95rem;
    }
    
    .filter-btn {
        font-size: 0.75rem;
        padding: 0.4rem 0.9rem;
    }
    
    .featured-article-content {
        padding: 1.5rem;
    }
    
    .featured-article-title {
        font-size: 1.2rem;
    }
    
    .featured-article-excerpt {
        font-size: 0.85rem;
    }
    
    .blog-card-image {
        height: 170px;
    }
    
    .blog-card-title {
        font-size: 1rem;
    }
    
    .blog-card-excerpt {
        font-size: 0.8rem;
    }
    
    .newsletter-card {
        padding: 1.5rem 1rem;
    }
    
    .newsletter-heading {
        font-size: 1.3rem;
    }
    
    .newsletter-description {
        font-size: 0.85rem;
    }
    
    .cta-banner-title {
        font-size: 1.3rem;
    }
    
    .footer-logo img {
        height: 60px;
    }
}