/* =====================
   FINAL BLOG PAGE STYLES
   With hero background image
===================== */

:root {
    --primary: #7c3aed;
    --primary-dark: #6d28d9;
    --secondary: #64748b;
    --dark: #0f172a;
    --white: #ffffff;
    --light-bg: #f8fafc;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    background: var(--light-bg);
    overflow-x: hidden;
}

/* =====================
   HERO SECTION
===================== */
.hero-blog {
    position: relative;
    min-height: 65vh;
    display: flex;
    align-items: flex-start;
    padding: 100px 60px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(30, 41, 59, 0.75) 100%),
        url('https://images.unsplash.com/photo-1557804506-669a67965ba0?w=1920&q=80') center/cover no-repeat;
    z-index: 1;
}

/* Animated overlay pattern */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        repeating-linear-gradient(
            90deg,
            transparent,
            transparent 50px,
            rgba(124, 58, 237, 0.03) 50px,
            rgba(124, 58, 237, 0.03) 51px
        ),
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 50px,
            rgba(124, 58, 237, 0.03) 50px,
            rgba(124, 58, 237, 0.03) 51px
        );
    z-index: 2;
    animation: grid-subtle 20s linear infinite;
}

@keyframes grid-subtle {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 1280px;
    margin: 0 auto;
    width: 100%;
}

.hero-text {
    max-width: 700px;
}

.hero-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: #a78bfa;
    background: rgba(124, 58, 237, 0.15);
    padding: 8px 20px;
    border-radius: 50px;
    border: 1px solid rgba(167, 139, 250, 0.3);
    margin-bottom: 24px;
    animation: fade-in-up 0.6s ease;
    backdrop-filter: blur(10px);
}

.hero-blog h1 {
    font-family: 'Syne', sans-serif;
    font-size: 4.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.1;
    animation: fade-in-up 0.6s ease 0.1s backwards;
}

.hero-blog h1 .highlight {
    background: linear-gradient(135deg, #a78bfa 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
}

.hero-blog .subtitle {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0;
    line-height: 1.6;
    font-weight: 400;
    animation: fade-in-up 0.6s ease 0.2s backwards;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* =====================
   BLOG CONTENT
===================== */
.blog-content {
    max-width: 1280px;
    margin: 0 auto;
    padding: 80px 40px;
}

/* =====================
   CATEGORIES
===================== */
.categories-section {
    margin-bottom: 60px;
    animation: fade-in-up 0.8s ease;
}

.categories-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.category-label {
    line-height: 1;
}

.category-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 8px;
    background: var(--light-bg);
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--secondary);
}

.category-btn:hover {
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.category-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.category-btn.active .category-count {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

/* =====================
   FEATURED POST
===================== */
.featured-post {
    background: var(--white);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 80px;
    border: 1px solid var(--border);
    position: relative;
    animation: fade-in-up 0.8s ease 0.2s backwards;
    transition: var(--transition);
}

.featured-post:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.featured-badge {
    position: absolute;
    top: 30px;
    right: 30px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: rgba(124, 58, 237, 0.95);
    backdrop-filter: blur(10px);
    color: var(--white);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 4px 20px rgba(124, 58, 237, 0.4);
}

.featured-content {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 0;
}

.featured-visual {
    position: relative;
    background: linear-gradient(135deg, #7c3aed 0%, #a78bfa 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px;
    overflow: hidden;
}

.visual-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.visual-icon {
    position: relative;
    z-index: 2;
    color: rgba(255, 255, 255, 0.9);
    animation: icon-float 6s ease-in-out infinite;
}

@keyframes icon-float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(5deg); }
}

.featured-text {
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.post-meta-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.post-category {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--primary);
}

.post-date {
    font-size: 0.85rem;
    color: var(--secondary);
    font-weight: 500;
}

.featured-text h2 {
    font-family: 'Syne', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 20px;
    line-height: 1.2;
}

.featured-text p {
    font-size: 1.1rem;
    color: var(--secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.post-meta-bottom {
    display: flex;
    align-items: center;
    gap: 24px;
}

.read-time {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--secondary);
    font-weight: 500;
}

.btn-featured {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
}

.btn-featured:hover {
    background: var(--primary-dark);
    transform: translateX(4px);
    box-shadow: 0 6px 16px rgba(124, 58, 237, 0.4);
}

/* =====================
   BLOG GRID
===================== */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 32px;
    margin-bottom: 60px;
}

.blog-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    border-color: rgba(124, 58, 237, 0.3);
}

.card-visual {
    position: relative;
    height: 200px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.visual-bg {
    position: absolute;
    inset: 0;
    opacity: 0.9;
    transition: var(--transition);
}

.blog-card:hover .visual-bg {
    transform: scale(1.1);
    opacity: 1;
}

.visual-icon-small {
    position: relative;
    z-index: 2;
    font-size: 3.5rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
}

.card-content {
    padding: 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-category {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--primary);
}

.card-date {
    font-size: 0.8rem;
    color: var(--secondary);
    font-weight: 500;
}

.card-content h3 {
    font-family: 'Syne', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
    line-height: 1.3;
}

.card-content p {
    font-size: 0.95rem;
    color: var(--secondary);
    line-height: 1.6;
    margin-bottom: auto;
    flex-grow: 1;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
}

.read-time-small {
    font-size: 0.85rem;
    color: var(--secondary);
    font-weight: 500;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.card-link:hover {
    gap: 10px;
    color: var(--primary-dark);
}

/* =====================
   NEWSLETTER
===================== */
.newsletter-section {
    background: var(--dark);
    border-radius: 24px;
    padding: 70px 60px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.newsletter-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 30%, rgba(124, 58, 237, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(167, 139, 250, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.newsletter-visual {
    position: absolute;
    top: 50%;
    left: 60px;
    transform: translateY(-50%);
    font-size: 120px;
    opacity: 0.05;
}

.newsletter-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-content h2 {
    font-family: 'Syne', sans-serif;
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 16px;
}

.newsletter-content > p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    line-height: 1.6;
}

.newsletter-form {
    max-width: 560px;
    margin: 0 auto;
}

.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
}

.input-group input {
    flex: 1;
    padding: 18px 24px;
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    color: var(--white);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.input-group input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.input-group input:focus {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(167, 139, 250, 0.5);
    box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
}

.input-group button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 18px 32px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(124, 58, 237, 0.4);
}

.input-group button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(124, 58, 237, 0.5);
}

.newsletter-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
}

.newsletter-note a {
    color: var(--white);
    text-decoration: underline;
    transition: var(--transition);
}

.newsletter-note a:hover {
    color: #a78bfa;
}

/* =====================
   RESPONSIVE DESIGN
===================== */
@media (max-width: 1024px) {
    .hero-blog {
        padding: 80px 40px;
    }

    .hero-blog h1 {
        font-size: 3.5rem;
    }

    .featured-content {
        grid-template-columns: 1fr;
    }

    .featured-badge {
        top: 20px;
        right: 20px;
    }

    .featured-visual {
        min-height: 300px;
    }

    .blog-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: 28px;
    }
}

@media (max-width: 768px) {
    .blog-content {
        padding: 60px 24px;
    }

    .hero-blog {
        min-height: 50vh;
        padding: 70px 30px;
    }

    .hero-blog h1 {
        font-size: 2.8rem;
    }

    .hero-blog .subtitle {
        font-size: 1.1rem;
    }

    .categories-wrapper {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 10px;
        -webkit-overflow-scrolling: touch;
    }

    .category-btn {
        flex-shrink: 0;
    }

    .featured-text {
        padding: 40px 30px;
    }

    .featured-text h2 {
        font-size: 2rem;
    }

    .blog-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .newsletter-section {
        padding: 50px 30px;
    }

    .newsletter-content h2 {
        font-size: 2.2rem;
    }

    .input-group {
        flex-direction: column;
    }

    .input-group button {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-blog {
        padding: 60px 20px;
    }

    .hero-blog h1 {
        font-size: 2.2rem;
    }

    .hero-blog .subtitle {
        font-size: 1rem;
    }

    .hero-label {
        font-size: 0.7rem;
        padding: 6px 16px;
    }

    .blog-content {
        padding: 40px 20px;
    }

    .featured-text {
        padding: 30px 24px;
    }

    .featured-text h2 {
        font-size: 1.6rem;
    }

    .featured-text p {
        font-size: 1rem;
    }

    .card-content {
        padding: 24px 20px;
    }

    .newsletter-section {
        padding: 40px 24px;
    }

    .newsletter-content h2 {
        font-size: 1.8rem;
    }

    .newsletter-content > p {
        font-size: 1rem;
    }
}