/* Reset & Global */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--blog-bg);
    color: var(--blog-text);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Blog Variables */
:root {
    --blog-primary: #007AFF;
    --blog-text: #333;
    --blog-bg: #f9f9f9;
    --blog-card-bg: #fff;
    /* Global Fallbacks for Header/Footer */
    --primary: #007AFF;
    --text: #333;
    --bg: #fff;
}

/* Bubble Background */
#bubble-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: radial-gradient(circle at center, #fff, #f5f5f7);
    overflow: hidden;
}

.bubble {
    position: absolute;
    background: rgba(0, 122, 255, 0.08);
    border-radius: 50%;
    animation: rise 30s linear infinite;
}

@keyframes rise {
    0% { transform: translateY(0) scale(1); opacity: 0; }
    30% { opacity: 0.6; }
    100% { transform: translateY(-130vh) scale(1.8); opacity: 0; }
}

/* Layout */
.blog-container {
    max-width: 95%;
    margin: 0 auto;
    padding: 20px 20px 20px;
    position: relative;
    z-index: 2;
}

.blog-header {
    text-align: center;
    margin-bottom: 50px;
}

.blog-header h1 {
    font-size: 2.5rem;
    color: var(--blog-text);
    margin-bottom: 10px;
}

.blog-header p {
    color: #666;
    font-size: 1.1rem;
}

/* Controls */
.blog-controls {
    max-width: 600px;
    margin: 30px auto 0;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#blog-search {
    width: 100%;
    padding: 12px 20px;
    border-radius: 50px;
    border: 1px solid #ddd;
    font-size: 1rem;
    outline: none;
    transition: 0.3s;
}

#blog-search:focus {
    border-color: var(--blog-primary);
    box-shadow: 0 0 0 4px rgba(0,122,255,0.1);
}

.blog-categories {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.blog-cat-btn {
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid #ddd;
    background: #fff;
    cursor: pointer;
    font-size: 0.9rem;
    transition: 0.2s;
}

.blog-cat-btn:hover, .blog-cat-btn.active {
    background: var(--blog-primary);
    color: #fff;
    border-color: var(--blog-primary);
}

/* Grid View */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 25px;
}

.blog-card {
    background: var(--blog-card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    border: 1px solid rgba(0,0,0,0.05);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.blog-card-img-wrapper {
    position: relative;
}

.card-cat-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.blog-card-img {
    width: 100%;
    height: 200px;
    object-fit: contain;
    transition: transform 0.3s ease;
    background: #f5f5f7;
}

.blog-card-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

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

.blog-meta {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 10px;
}

.blog-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--blog-text);
    margin-bottom: 10px;
    line-height: 1.4;
}

.blog-excerpt {
    font-size: 0.95rem;
    color: #555;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.blog-tags {
    margin-bottom: 15px;
}

.blog-tag {
    font-size: 0.8rem;
    color: var(--blog-primary);
    background: rgba(0,122,255,0.1);
    padding: 2px 8px;
    border-radius: 4px;
    margin-right: 5px;
}

.read-more {
    color: var(--blog-primary);
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
}

/* Load More Button */
.load-more-btn {
    padding: 12px 30px;
    background: var(--blog-primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.load-more-btn:hover {
    background: #005ecb;
    transform: translateY(-2px);
}

/* Detail View */
.blog-post {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    animation: fadeIn 0.5s ease;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    color: #666;
    margin-bottom: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: color 0.2s;
}

.back-btn:hover { color: var(--blog-primary); }

.post-title { font-size: 2.5rem; color: var(--blog-text); margin-bottom: 15px; line-height: 1.2; }
.post-meta { color: #888; font-size: 0.95rem; margin-bottom: 30px; }

/* Post Visuals Layout */
.post-visuals {
    display: flex;
    gap: 30px;
    margin-bottom: 30px;
    align-items: flex-start;
}

.post-img-container { 
    position: relative; 
    flex: 2;
    width: 100%; 
}

.post-sidebar {
    flex: 1;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid rgba(0,0,0,0.05);
    min-width: 200px;
}

.post-sidebar h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--blog-text);
}

.sidebar-cats {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-cat-btn {
    text-align: left;
    padding: 8px 12px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    color: #555;
    transition: 0.2s;
}

.sidebar-cat-btn:hover, .sidebar-cat-btn.active {
    background: var(--blog-primary);
    color: #fff;
    border-color: var(--blog-primary);
}

.post-cat-badge { position: absolute; top: 15px; right: 15px; background: rgba(0,0,0,0.7); color: #fff; padding: 6px 12px; border-radius: 8px; font-size: 0.85rem; font-weight: 600; backdrop-filter: blur(4px); z-index: 2; }
.post-img { width: auto; max-width: 100%; height: auto; max-height: 450px; object-fit: contain; display: block; margin: 0 auto; border-radius: 12px; }
.post-content { font-size: 1.1rem; line-height: 1.8; color: #333; }
.post-content h2, .post-content h3 { margin-top: 30px; margin-bottom: 15px; color: #222; }
.post-content p { margin-bottom: 20px; }
.post-content a { color: var(--blog-primary); text-decoration: underline; }

/* Share Buttons */
.blog-share {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.blog-share h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--blog-text);
}

.share-btns {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.share-btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform 0.2s, opacity 0.2s;
    border: none;
    cursor: pointer;
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 0.9;
    color: #fff;
}

.share-btn.whatsapp { background-color: #25D366; }
.share-btn.facebook { background-color: #1877F2; }
.share-btn.twitter { background-color: #1DA1F2; }
.share-btn.copy-btn { background-color: #8E8E93; }
.share-btn.tools-btn { background-color: #007AFF; }

/* Related Posts */
.related-posts {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.related-posts h3 {
    font-size: 1.5rem;
    margin-bottom: 25px;
    color: var(--blog-text);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.related-grid .blog-card-img {
    height: 140px;
}

.related-grid .blog-title {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

/* Post Navigation */
.blog-navigation {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(0,0,0,0.1);
    gap: 20px;
}

.nav-link {
    cursor: pointer;
    flex: 1;
    padding: 15px;
    border-radius: 8px;
    background: rgba(0,0,0,0.02);
    transition: background 0.2s, transform 0.2s;
    max-width: 48%;
}

.nav-link:hover {
    background: rgba(0,0,0,0.05);
    transform: translateY(-2px);
}

.nav-link.next {
    text-align: right;
}

.nav-link span {
    display: block;
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 5px;
    font-weight: 600;
}

.nav-link h4 {
    font-size: 1rem;
    color: var(--blog-primary);
    margin: 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1400px) {
    .blog-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1100px) {
    .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 850px) {
    .blog-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) { 
    .blog-header h1 { font-size: 2rem; } 
    .post-title { font-size: 1.8rem; } 
    .blog-post { padding: 20px; } 
    .blog-container { padding-top: 130px; max-width: 99%; }
    
    .blog-navigation {
        flex-direction: column;
        gap: 15px;
    }
    .nav-link {
        max-width: 100%;
        text-align: center;
    }
    .nav-link.next { text-align: center; }

    .post-visuals {
        flex-direction: column;
    }
    .post-sidebar {
        width: 100%;
    }
    .sidebar-cats {
        flex-direction: row;
        flex-wrap: wrap;
    }
}

@media (max-width: 550px) {
    .blog-grid { grid-template-columns: 1fr; }
}