/* ==========================================================
   1. GLOBAL & CONTAINER SCALING DEFAULTS (DOWN TO 300PX)
   ========================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    overflow-x: hidden;
    width: 100%;
}

.blogs-container {
    padding-top: 1.5rem;
    padding-bottom: 3rem;
    width: 100%;
}

/* Fluid Container with Safe Padding */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding-left: 1rem;
    padding-right: 1rem;
}

/* Flexible Grid Layout — Uses minmax(0, 1fr) to Prevent Grid Blowout */
.blogs-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 320px);
    gap: 2rem;
    align-items: start;
    width: 100%;
}

/* ==========================================================
   2. HERO SECTION
   ========================================================== */
.blog-hero {
    background-color: var(--bg-surface, #111827);
    border-bottom: 1px solid var(--border-color, #1F2937);
    padding: 3rem 1rem 2rem 1rem;
    text-align: center;
    width: 100%;
}

.hero-badge {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary, #6366F1);
    padding: 0.35rem 0.85rem;
    border-radius: 50px;
    font-size: 0.775rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 1rem;
}

.hero-title {
    font-size: clamp(1.25rem, 4vw, 2.25rem);
    font-weight: 800;
    color: var(--text-primary, #F9FAFB);
    line-height: 1.3;
    margin-bottom: 0.85rem;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.hero-description {
    font-size: clamp(0.825rem, 2vw, 1rem);
    color: var(--text-secondary, #9CA3AF);
    max-width: 720px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ==========================================================
   3. MAIN ARTICLE CONTENT CARD & METADATA
   ========================================================== */
.blog-feed {
    width: 100%;
    min-width: 0; /* Critical for CSS Grid text wrapping */
}

.blog-card {
    padding: 2rem; 
    display: block;
    background-color: var(--bg-surface, #111827);
    border: 1px solid var(--border-color, #1F2937);
    border-radius: var(--radius-lg, 16px);
    padding: 1.75rem;
    width: 100%;
    overflow: hidden;
}

.blog-meta-tags {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    font-size: 0.825rem;
    color: var(--text-muted, #6B7280);
    margin-bottom: 1rem;
}

.blog-category-badge {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary, #6366F1);
    padding: 0.25rem 0.65rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
    max-width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.blog-date {
    font-size: 0.8rem;
    color: var(--text-secondary, #9CA3AF);
}

.blog-title {
    font-size: clamp(1.2rem, 3.5vw, 1.8rem);
    line-height: 1.35;
    font-weight: 800;
    color: var(--text-primary, #F9FAFB);
    margin-bottom: 1rem;
    word-break: break-word;
    overflow-wrap: anywhere;
}

/* Featured Image Wrapper */
.blog-card-img-wrap {
    width: 100%;
    height: auto;
    max-height: 400px;
    border-radius: var(--radius-sm, 8px);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.blog-card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Lead Summary Box */
.blog-lead-excerpt {
    background-color: var(--bg-card, #1F2937);
    border-left: 4px solid var(--primary, #6366F1);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    border-radius: 0 6px 6px 0;
    color: var(--text-primary, #F9FAFB);
    font-size: 0.925rem;
    line-height: 1.6;
    word-break: break-word;
    overflow-wrap: anywhere;
}

/* ==========================================================
   4. RICH TEXT CONTENT BODY (UNIFIED WITH COURSE VIEWER)
   ========================================================== */
.blog-body-content {
    color: var(--text-secondary, #9CA3AF);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 2rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* Headings & Separators */
.blog-body-content h1 {
    color: var(--text-primary, #F9FAFB);
    font-size: 1.5rem;
    font-weight: 800;
    margin-top: 1.75rem;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color, #1F2937);
    padding-bottom: 0.5rem;
    word-break: break-word;
}

.blog-body-content h2 {
    color: var(--text-primary, #F9FAFB);
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.4rem;
    word-break: break-word;
}

.blog-body-content h3 {
    color: var(--text-primary, #F9FAFB);
    font-size: 1.15rem;
    font-weight: 700;
    margin-top: 1.25rem;
    margin-bottom: 0.35rem;
    word-break: break-word;
}

.blog-body-content p {
    color: var(--text-secondary, #9CA3AF);
    margin: 0;
    line-height: 1.7;
}

.blog-body-content hr {
    border: none;
    height: 1px;
    background: var(--border-color, #1F2937);
    margin: 2rem 0;
}

/* Data Tables with Smooth Horizontal Scroll & No Cell Compression */
.blog-body-content .table-wrapper,
.blog-body-content table-container {
    width: 100%;
    overflow-x: auto;
    margin: 1.5rem 0;
    border-radius: var(--radius-lg, 12px);
    border: 1px solid var(--border-color, #1F2937);
    background: var(--bg-surface, #111827);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.blog-body-content > table,
.blog-body-content table {
    display: block !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
    border-collapse: separate !important;
    border-spacing: 0 !important;
    margin: 1.5rem 0 !important;
    background: var(--bg-surface, #111827);
    border: 1px solid var(--border-color, #1F2937);
    border-radius: var(--radius-lg, 12px);
}

.blog-body-content th,
.blog-body-content td {
    max-width: none !important;
    white-space: nowrap !important;
    word-break: normal !important;
    overflow-wrap: normal !important;
    vertical-align: middle;
    padding: 0.85rem 1.1rem;
}

.blog-body-content th {
    background: var(--bg-card, #1F2937);
    color: var(--text-primary, #F9FAFB);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    border-bottom: 1px solid var(--border-color, #1F2937);
}

.blog-body-content td {
    color: var(--text-secondary, #9CA3AF);
    font-size: 0.875rem;
    line-height: 1.5;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: background 0.15s ease, color 0.15s ease;
}

.blog-body-content tbody tr:last-child td {
    border-bottom: none;
}

.blog-body-content tbody tr:hover td {
    background: rgba(99, 102, 241, 0.08);
    color: var(--text-primary, #F9FAFB);
}

/* Horizontal Scrollbar Styling for Tables */
.blog-body-content table::-webkit-scrollbar {
    height: 6px;
}

.blog-body-content table::-webkit-scrollbar-track {
    background: var(--bg-main, #0B0F19);
    border-radius: 4px;
}

.blog-body-content table::-webkit-scrollbar-thumb {
    background: var(--primary, #6366F1);
    border-radius: 4px;
}

.blog-body-content table::-webkit-scrollbar-thumb:hover {
    background: #818CF8;
}

/* Lists */
.blog-body-content ul, 
.blog-body-content ol {
    margin: 0.75rem 0;
    padding-left: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.blog-body-content ul li {
    list-style: none;
    position: relative;
    padding-left: 1rem;
    color: var(--text-secondary, #9CA3AF);
}

.blog-body-content ul li::before {
    content: "•";
    color: var(--primary, #6366F1);
    font-weight: bold;
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: -0.15rem;
}

.blog-body-content ol li {
    color: var(--text-secondary, #9CA3AF);
    padding-left: 0.25rem;
}

.blog-body-content ol li::marker {
    color: var(--primary, #6366F1);
    font-weight: 700;
}

.blog-body-content li p {
    margin: 0;
    display: inline;
}

/* Blockquotes */
.blog-body-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.25rem;
    background: rgba(99, 102, 241, 0.08);
    border-left: 4px solid var(--primary, #6366F1);
    border-radius: 0 var(--radius-md, 8px) var(--radius-md, 8px) 0;
    color: var(--text-primary, #F9FAFB);
    font-style: italic;
}

.blog-body-content blockquote p {
    margin: 0;
}

/* Code Blocks & Inline Code */
.blog-body-content code {
    background: var(--bg-surface, #111827);
    border: 1px solid var(--border-color, #1F2937);
    color: #EC4899;
    font-family: var(--font-code, 'JetBrains Mono', monospace);
    font-size: 0.825rem;
    padding: 0.2rem 0.45rem;
    border-radius: 6px;
}

.blog-body-content pre,
pre[class*="language-"] {
    background: var(--bg-main, #0B0F19) !important;
    border: 1px solid var(--border-color, #1F2937) !important;
    border-radius: var(--radius-lg, 12px) !important;
    padding: 1.25rem !important;
    margin: 1.25rem 0 !important;
    overflow-x: auto !important;
    max-width: 100% !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 0.85rem !important;
    white-space: pre;
    word-break: normal;
    word-wrap: normal;
}

.blog-body-content pre code {
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    color: var(--text-primary, #F9FAFB) !important;
    font-size: 0.85rem !important;
    line-height: 1.6 !important;
}

/* Responsive Images / Media */
.blog-body-content img,
.blog-body-content iframe,
.blog-body-content video {
    max-width: 100% !important;
    height: auto !important;
    border-radius: 8px;
    margin: 1rem 0;
}

/* ==========================================================
   5. ARTICLE FOOTER & BOOKMARK ACTION
   ========================================================== */
.blog-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color, #1F2937);
}

.bookmark-btn {
    background: var(--bg-card, #1F2937);
    color: var(--text-primary, #F9FAFB);
    border: 1px solid var(--border-highlight, #374151);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.825rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.bookmark-btn:hover {
    border-color: var(--primary, #6366F1);
    color: var(--primary, #6366F1);
}

.card-link {
    color: var(--primary, #6366F1);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: opacity 0.2s;
}

.card-link:hover {
    opacity: 0.8;
}

/* ==========================================================
   6. RIGHT SIDEBAR WIDGETS
   ========================================================== */
.blog-sidebar {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    min-width: 0;
}

.sidebar-widget {
    background-color: var(--bg-surface, #111827);
    border: 1px solid var(--border-color, #1F2937);
    border-radius: var(--radius-md, 12px);
    padding: 1.25rem;
    width: 100%;
}

.widget-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary, #F9FAFB);
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color, #1F2937);
    padding-bottom: 0.5rem;
}

/* Search Input */
.sidebar-search-box {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.sidebar-search-icon {
    position: absolute;
    left: 0.85rem;
    width: 16px;
    height: 16px;
    stroke: var(--text-muted, #6B7280);
}

.sidebar-search-input {
    width: 100%;
    background-color: var(--bg-card, #1F2937);
    border: 1px solid var(--border-highlight, #374151);
    border-radius: var(--radius-sm, 6px);
    padding: 0.6rem 0.85rem 0.6rem 2.3rem;
    color: var(--text-primary, #F9FAFB);
    font-size: 0.85rem;
    outline: none;
    transition: border-color 0.2s ease;
}

.sidebar-search-input:focus {
    border-color: var(--primary, #6366F1);
}

/* Recent Posts List */
.recent-posts-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.recent-post-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    border-bottom: 1px dashed var(--border-color, #1F2937);
    padding-bottom: 0.75rem;
}

.recent-post-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.recent-post-title {
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-primary, #F9FAFB);
    text-decoration: none;
    line-height: 1.35;
    word-break: break-word;
    transition: color 0.2s ease;
}

.recent-post-title:hover {
    color: var(--primary, #6366F1);
}

.recent-post-date {
    font-size: 0.725rem;
    color: var(--text-muted, #6B7280);
}

/* Category Accordion */
.category-accordion {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.accordion-item {
    border: 1px solid var(--border-color, #1F2937);
    border-radius: var(--radius-sm, 6px);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    background-color: var(--bg-card, #1F2937);
    color: var(--text-primary, #F9FAFB);
    padding: 0.65rem 0.85rem;
    border: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.825rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
}

.accordion-header:hover {
    background-color: rgba(99, 102, 241, 0.1);
}

.accordion-icon {
    font-size: 0.65rem;
    color: var(--text-muted, #6B7280);
}

.subcategory-list {
    list-style: none;
    padding: 0.5rem 0.85rem;
    margin: 0;
    background-color: var(--bg-surface, #111827);
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.subcategory-link {
    color: var(--text-secondary, #9CA3AF);
    font-size: 0.8rem;
    text-decoration: none;
    word-break: break-word;
}

.subcategory-link:hover {
    color: var(--primary, #6366F1);
}

.hidden {
    display: none !important;
}

/* ==========================================================
   7. BOOKMARK MODAL POPUP
   ========================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 0.75rem;
}

.modal-card {
    background: var(--bg-surface, #111827);
    border: 1px solid var(--border-color, #1F2937);
    border-radius: var(--radius-lg, 16px);
    width: 100%;
    max-width: 460px;
    padding: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--text-primary, #F9FAFB);
    margin-bottom: 0.25rem;
}

.modal-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary, #9CA3AF);
    margin-bottom: 1.25rem;
    word-break: break-word;
}

.modal-textarea {
    width: 100%;
    background: var(--bg-card, #1F2937);
    border: 1px solid var(--border-highlight, #374151);
    border-radius: var(--radius-sm, 6px);
    padding: 0.65rem 0.85rem;
    color: var(--text-primary, #F9FAFB);
    font-size: 0.85rem;
    resize: vertical;
    outline: none;
}

.modal-textarea:focus {
    border-color: var(--primary, #6366F1);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.25rem;
}

.btn-primary {
    background-color: var(--primary, #6366F1);
    color: #ffffff;
    padding: 0.55rem 1.15rem;
    border-radius: var(--radius-sm, 6px);
    font-size: 0.825rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-secondary {
    background-color: var(--bg-card, #1F2937);
    color: var(--text-primary, #F9FAFB);
    border: 1px solid var(--border-highlight, #374151);
    padding: 0.55rem 1.15rem;
    border-radius: var(--radius-sm, 6px);
    font-size: 0.825rem;
    font-weight: 700;
    cursor: pointer;
}

/* ==========================================================
   8. SITE FOOTER
   ========================================================== */
.site-footer {
    background-color: var(--bg-surface, #111827);
    border-top: 1px solid var(--border-color, #1F2937);
    padding: 3rem 0 2rem 0;
    margin-top: 3rem;
    width: 100%;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.footer-brand-logo {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--primary, #6366F1);
    text-decoration: none;
    display: inline-block;
    margin-bottom: 0.85rem;
}

.footer-brand-desc {
    font-size: 0.825rem;
    color: var(--text-secondary, #9CA3AF);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.system-status {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: #10B981;
    background: rgba(16, 185, 129, 0.1);
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status-dot {
    width: 6px;
    height: 6px;
    background-color: #10B981;
    border-radius: 50%;
}

.footer-col-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--text-primary, #F9FAFB);
    margin-bottom: 1.25rem;
}

.footer-links-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.footer-link {
    color: var(--text-secondary, #9CA3AF);
    font-size: 0.825rem;
    text-decoration: none;
}

.footer-newsletter-card {
    background-color: var(--bg-card, #1F2937);
    border: 1px solid var(--border-highlight, #374151);
    border-radius: var(--radius-md, 12px);
    padding: 1rem;
}

.newsletter-text {
    font-size: 0.775rem;
    color: var(--text-secondary, #9CA3AF);
    margin-bottom: 0.85rem;
    line-height: 1.5;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.newsletter-input {
    width: 100%;
    background-color: var(--bg-surface, #111827);
    border: 1px solid var(--border-highlight, #374151);
    border-radius: var(--radius-sm, 6px);
    padding: 0.5rem 0.75rem;
    color: var(--text-primary, #F9FAFB);
    font-size: 0.8rem;
    outline: none;
}

.btn-newsletter {
    width: 100%;
    padding: 0.5rem;
    font-size: 0.8rem;
    text-align: center;
}

.footer-bottom-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color, #1F2937);
    font-size: 0.8rem;
    color: var(--text-muted, #6B7280);
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-legal-links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 1.25rem;
}

/* ==========================================================
   9. STRICT RESPONSIVE BREAKPOINTS (992px, 576px, 300px)
   ========================================================== */

/* Tablets & Laptops (<= 992px) */
@media (max-width: 992px) {
    .blogs-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

/* Mobile Devices (<= 576px) */
@media (max-width: 576px) {
    .blog-card {
        padding: 1.25rem;
        border-radius: var(--radius-md, 12px);
    }

    .blog-card-img-wrap {
        max-height: 240px;
        margin-bottom: 1rem;
    }

    .blog-card-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 0.85rem;
    }

    .bookmark-btn {
        width: 100%;
        text-align: center;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }

    .footer-bottom-bar {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .footer-legal-links {
        justify-content: center;
    }
}

/* Ultra-Small Mobile & Foldable Screens (300px - 360px Viewports) */
@media (max-width: 360px) {
    .container {
        padding-left: 0.5rem !important;
        padding-right: 0.5rem !important;
    }

    .blog-card {
        padding: 0.85rem !important;
        border-radius: var(--radius-sm, 8px);
    }

    .blog-hero {
        padding: 2rem 0.5rem 1.25rem 0.5rem;
    }

    .blog-lead-excerpt {
        padding: 0.75rem 0.85rem;
        font-size: 0.85rem;
    }

    .blog-body-content pre,
    pre[class*="language-"] {
        padding: 0.65rem !important;
        font-size: 0.75rem !important;
    }

    .sidebar-widget {
        padding: 0.85rem;
    }

    .modal-card {
        padding: 1rem;
    }

    .modal-actions {
        flex-direction: column;
        gap: 0.5rem;
    }

    .modal-actions button {
        width: 100%;
    }
}