/* ============================================================
   BLOG-SPECIFIC STYLES — with mobile spacing fix
   ============================================================ */

.blog {
    --blog-surface: var(--container-color, rgba(255, 255, 255, 0.04));
    --blog-surface-hover: rgba(255, 255, 255, 0.07);
    --blog-border: var(--border-color, rgba(255, 255, 255, 0.08));
    --blog-text: var(--title-color, #f1f2f6);
    --blog-text-muted: var(--text-color, #a7abbd);
    --blog-accent: #109fe7;
    --blog-accent-2: #00cec9;
    --blog-radius: 18px;
}

/* ----- Container padding (critical for mobile) ----- */
.blog .container {
    padding: 0 1.5rem;    /* ensures cards have breathing room */
    max-width: 1150px;
    margin: 0 auto;
}

.blog__subtitle {
    text-align: center;
    color: var(--blog-text-muted);
    max-width: 640px;
    margin: -0.5rem auto 2rem;
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ---------- Filters ---------- */
.blog__filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    margin: 0 auto 2.5rem;
    max-width: 900px;
}

.blog__filter-btn {
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--blog-text-muted);
    background: var(--blog-surface);
    border: 1px solid var(--blog-border);
    padding: 0.4rem 1rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.25s ease;
    white-space: nowrap;
}
.blog__filter-btn:hover {
    color: var(--blog-text);
    border-color: var(--blog-accent);
    transform: translateY(-2px);
}
.blog__filter-btn.is-active {
    color: #000;
    background: #109fe7;
    border-color: #109fe7;
    box-shadow: 0 4px 14px rgba(16, 159, 231, 0.4);
}

/* ---------- Grid ---------- */
.blog__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.8rem;
    max-width: 1150px;
    margin: 0 auto;
    justify-items: center;
}

/* ---------- Card ---------- */
.blog__card {
    max-width: 364px;
    width: 100%;
    position: relative;
    display: flex;
    flex-direction: column;
    background: var(--blog-surface);
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    opacity: 0;
    transform: translateY(28px);
    animation: blogFadeUp 0.6s ease forwards;
    transition: transform 0.35s cubic-bezier(0.2, 0, 0, 1), border-color 0.35s, box-shadow 0.35s, background 0.35s;
    cursor: pointer;
    will-change: transform;
}
.blog__card:hover,
.blog__card:focus-within {
    transform: translateY(-8px);
    border-color: var(--blog-accent);
    background: var(--blog-surface-hover);
    box-shadow: 0 20px 40px -16px rgba(0, 0, 0, 0.6);
}
@keyframes blogFadeUp {
    to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .blog__card { animation: none; opacity: 1; transform: none; }
}
.blog__card.is-hidden,
.blog__card--more-hidden {
    display: none;
}

/* Card media */
.blog__media {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--blog-accent), var(--blog-accent-2));
    overflow: hidden;
}
.blog__media img,
.blog__media video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s ease;
}
.blog__card:hover .blog__media img,
.blog__card:hover .blog__media video {
    transform: scale(1.05);
}
.blog__media--fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.8rem;
    color: rgba(255, 255, 255, 0.8);
}

/* Card body */
.blog__body {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.4rem 1.4rem 1.6rem;
    flex: 1;
}
.blog__tag {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    width: fit-content;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.2rem 0.7rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--blog-border);
}
.blog__tag--ai          { color: #a29bfe; border-color: rgba(162, 155, 254, 0.3); }
.blog__tag--security    { color: #ff7675; border-color: rgba(255, 118, 117, 0.3); }
.blog__tag--swe         { color: #ffd166; border-color: rgba(255, 209, 102, 0.3); }
.blog__tag--cloud       { color: #00cec9; border-color: rgba(0, 206, 201, 0.3); }
.blog__tag--blockchain  { color: #fd79a8; border-color: rgba(253, 121, 168, 0.3); }
.blog__tag--quantum     { color: #74b9ff; border-color: rgba(116, 185, 255, 0.3); }
.blog__tag--others      { color: #b2bec3; border-color: rgba(178, 190, 195, 0.3); }

.blog__card-title {
    font-size: 1.05rem;
    line-height: 1.4;
    color: var(--blog-text);
    margin: 0.2rem 0 0;
}
.blog__card-desc {
    font-size: 0.87rem;
    line-height: 1.6;
    color: var(--blog-text-muted);
    margin: 0;
    flex: 1;
}

.blog__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.3rem;
    font-size: 0.75rem;
    color: var(--blog-text-muted);
    gap: 0.5rem;
}
.blog__author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.blog__avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--blog-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    font-weight: 700;
    color: #fff;
    text-transform: uppercase;
    flex-shrink: 0;
}
.blog__author-name {
    font-weight: 600;
    color: var(--blog-text);
}
.blog__date-read {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0.7;
}

.blog__read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    color: #2ecc71;
    margin-top: 0.2rem;
    transition: gap 0.2s ease;
}
.blog__card:hover .blog__read-more {
    gap: 0.7rem;
}

/* ---------- Load More ---------- */
.blog__load-more {
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--blog-text);
    background: var(--blog-surface);
    border: 1px solid var(--blog-border);
    padding: 0.6rem 2rem;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.blog__load-more:hover {
    background: var(--blog-accent);
    border-color: var(--blog-accent);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 159, 231, 0.3);
}

/* ---------- Blog Modal ---------- */
.blog-modal {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
}
.blog-modal.is-visible {
    opacity: 1;
    pointer-events: auto;
}
.blog-modal__overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
}
.blog-modal__content {
    position: relative;
    max-width: 820px;
    width: 94%;
    max-height: 88vh;
    background: var(--body-color, #0e0f16);
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 2rem 2.5rem 2.5rem;
    overflow-y: auto;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.7);
    scrollbar-width: thin;
}
.blog-modal__content::-webkit-scrollbar {
    width: 4px;
}
.blog-modal__content::-webkit-scrollbar-thumb {
    background: var(--blog-accent);
    border-radius: 10px;
}
.blog-modal__close {
    position: sticky;
    top: 0;
    float: right;
    background: none;
    border: none;
    color: var(--blog-text-muted);
    font-size: 1.6rem;
    cursor: pointer;
    padding: 0.2rem;
    transition: color 0.2s;
    z-index: 10;
}
.blog-modal__close:hover {
    color: #fff;
}
.blog-modal__post h2 {
    font-size: 1.8rem;
    margin: 0 0 0.3rem;
    color: var(--blog-text);
    line-height: 1.3;
}
.blog-modal__post .modal-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--blog-text-muted);
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--blog-border);
}
.blog-modal__post .modal-meta img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

/* ============================================================
   ARTICLE TYPOGRAPHY SYSTEM — gives real hierarchy to
   whatever HTML a post's `content` string contains.
   ============================================================ */
.blog-modal__post .modal-content {
    line-height: 1.8;
    color: var(--blog-text);
    font-size: 1rem;
}

/* Section headings inside the article body */
.blog-modal__post .modal-content > h2:first-child {
    margin-top: 0;
}
.blog-modal__post .modal-content h2 {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--blog-text);
    margin: 2.4rem 0 1rem;
    padding-bottom: 0.6rem;
    border-bottom: 2px solid var(--blog-border);
    letter-spacing: -0.01em;
}
.blog-modal__post .modal-content h3 {
    font-size: 1.18rem;
    font-weight: 700;
    line-height: 1.35;
    color: var(--blog-accent);
    margin: 2rem 0 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.blog-modal__post .modal-content h3::before {
    content: "";
    width: 4px;
    height: 1.05em;
    border-radius: 2px;
    background: linear-gradient(180deg, var(--blog-accent), var(--blog-accent-2));
    display: inline-block;
    flex-shrink: 0;
}
.blog-modal__post .modal-content h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--blog-text);
    margin: 1.6rem 0 0.6rem;
}

/* Body copy */
.blog-modal__post .modal-content p {
    margin: 0 0 1.1rem;
    color: var(--blog-text-muted);
    font-size: 1rem;
}
.blog-modal__post .modal-content p strong,
.blog-modal__post .modal-content li strong {
    color: var(--blog-text);
    font-weight: 700;
}
.blog-modal__post .modal-content a {
    color: var(--blog-accent);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid rgba(16, 159, 231, 0.35);
    transition: border-color 0.2s, color 0.2s;
}
.blog-modal__post .modal-content a:hover {
    color: var(--blog-accent-2);
    border-color: var(--blog-accent-2);
}
.blog-modal__post .modal-content em {
    color: var(--blog-text-muted);
}

/* Lists — the biggest visible fix: distinct rows, not a paragraph blob */
.blog-modal__post .modal-content ul,
.blog-modal__post .modal-content ol {
    margin: 0 0 1.3rem;
    padding: 0;
    list-style: none;
}
.blog-modal__post .modal-content ul li,
.blog-modal__post .modal-content ol li {
    position: relative;
    padding: 0.55rem 0 0.55rem 1.8rem;
    margin: 0;
    color: var(--blog-text-muted);
    font-size: 0.97rem;
    line-height: 1.65;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}
.blog-modal__post .modal-content ul li:last-child,
.blog-modal__post .modal-content ol li:last-child {
    border-bottom: none;
}
.blog-modal__post .modal-content ul li::before {
    content: "";
    position: absolute;
    left: 0.15rem;
    top: 1.05rem;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--blog-accent);
}
.blog-modal__post .modal-content ol {
    counter-reset: blog-ol;
}
.blog-modal__post .modal-content ol li {
    counter-increment: blog-ol;
}
.blog-modal__post .modal-content ol li::before {
    content: counter(blog-ol);
    position: absolute;
    left: 0;
    top: 0.5rem;
    width: 20px;
    height: 20px;
    border-radius: 6px;
    background: rgba(16, 159, 231, 0.15);
    color: var(--blog-accent);
    font-size: 0.68rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}
/* Nested lists */
.blog-modal__post .modal-content li ul,
.blog-modal__post .modal-content li ol {
    margin: 0.5rem 0 0;
}

/* Media */
.blog-modal__post .modal-content img,
.blog-modal__post .modal-content video {
    max-width: 100%;
    border-radius: 10px;
    margin: 1.4rem 0;
    display: block;
    border: 1px solid var(--blog-border);
}
.blog-modal__post .modal-content figure {
    margin: 1.4rem 0;
}
.blog-modal__post .modal-content figcaption {
    font-size: 0.8rem;
    color: var(--blog-text-muted);
    text-align: center;
    margin-top: 0.5rem;
    opacity: 0.8;
}

/* Blockquote */
.blog-modal__post .modal-content blockquote {
    position: relative;
    border-left: 3px solid var(--blog-accent);
    background: rgba(16, 159, 231, 0.06);
    padding: 1rem 1.2rem 1rem 1.4rem;
    margin: 1.6rem 0;
    border-radius: 0 10px 10px 0;
    color: var(--blog-text);
    font-style: italic;
    font-size: 0.98rem;
}
.blog-modal__post .modal-content blockquote p {
    margin: 0;
    color: inherit;
}

/* Code */
.blog-modal__post .modal-content code {
    background: rgba(255, 255, 255, 0.08);
    color: var(--blog-accent-2);
    padding: 0.15rem 0.4rem;
    border-radius: 5px;
    font-size: 0.88em;
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
.blog-modal__post .modal-content pre {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--blog-border);
    padding: 1.1rem 1.2rem;
    border-radius: 10px;
    overflow-x: auto;
    font-size: 0.85rem;
    margin: 1.4rem 0;
}
.blog-modal__post .modal-content pre code {
    background: none;
    padding: 0;
    color: var(--blog-text);
}

/* Tables */
.blog-modal__post .modal-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6rem 0;
    font-size: 0.9rem;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--blog-border);
}
.blog-modal__post .modal-content thead th {
    background: rgba(16, 159, 231, 0.12);
    color: var(--blog-text);
    font-weight: 700;
    text-align: left;
    padding: 0.75rem 1rem;
    font-size: 0.82rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    border-bottom: 1px solid var(--blog-border);
}
.blog-modal__post .modal-content tbody td {
    padding: 0.7rem 1rem;
    color: var(--blog-text-muted);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    vertical-align: top;
}
.blog-modal__post .modal-content tbody tr:last-child td {
    border-bottom: none;
}
.blog-modal__post .modal-content tbody tr:hover td {
    background: rgba(255, 255, 255, 0.03);
    color: var(--blog-text);
}
.blog-modal__post .modal-content table strong {
    color: var(--blog-text);
}

/* Wrap wide tables on mobile without breaking layout */
.blog-modal__post .modal-content .table-scroll {
    overflow-x: auto;
    margin: 1.6rem 0;
    -webkit-overflow-scrolling: touch;
    border-radius: 10px;
    border: 1px solid var(--blog-border);
}
.blog-modal__post .modal-content .table-scroll table {
    margin: 0;
    border: none;
    border-radius: 0;
    min-width: 480px;
}

/* Callout / highlight box */
.blog-modal__post .modal-content .blog-callout {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
    background: linear-gradient(135deg, rgba(16, 159, 231, 0.1), rgba(0, 206, 201, 0.06));
    border: 1px solid rgba(16, 159, 231, 0.25);
    border-radius: 12px;
    padding: 1.1rem 1.3rem;
    margin: 1.6rem 0;
    font-size: 0.92rem;
    color: var(--blog-text);
}
.blog-modal__post .modal-content .blog-callout i {
    color: var(--blog-accent);
    font-size: 1.1rem;
    margin-top: 0.15rem;
    flex-shrink: 0;
}
.blog-modal__post .modal-content .blog-callout p {
    margin: 0;
    color: var(--blog-text);
    font-size: 0.92rem;
}

/* Video wrapper polish (existing 16:9 divs) */
.blog-modal__post .modal-content > div[style*="padding-bottom:56.25%"] {
    border: 1px solid var(--blog-border);
    box-shadow: 0 12px 30px -12px rgba(0,0,0,0.6);
}

/* Horizontal rule as a section divider */
.blog-modal__post .modal-content hr {
    border: none;
    border-top: 1px solid var(--blog-border);
    margin: 2rem 0;
}

/* Entrance animation for modal content — staggered reveal */
.blog-modal__post .modal-content > * {
    opacity: 0;
    transform: translateY(10px);
    animation: blogContentIn 0.5s ease forwards;
}
.blog-modal__post .modal-content > *:nth-child(1)  { animation-delay: 0.02s; }
.blog-modal__post .modal-content > *:nth-child(2)  { animation-delay: 0.06s; }
.blog-modal__post .modal-content > *:nth-child(3)  { animation-delay: 0.10s; }
.blog-modal__post .modal-content > *:nth-child(4)  { animation-delay: 0.14s; }
.blog-modal__post .modal-content > *:nth-child(5)  { animation-delay: 0.18s; }
.blog-modal__post .modal-content > *:nth-child(6)  { animation-delay: 0.22s; }
.blog-modal__post .modal-content > *:nth-child(7)  { animation-delay: 0.26s; }
.blog-modal__post .modal-content > *:nth-child(8)  { animation-delay: 0.30s; }
.blog-modal__post .modal-content > *:nth-child(n+9) { animation-delay: 0.34s; }
@keyframes blogContentIn {
    to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .blog-modal__post .modal-content > * {
        animation: none;
        opacity: 1;
        transform: none;
    }
}

.blog-modal__post .modal-references {
    margin-top: 2rem;
    padding-top: 1.2rem;
    border-top: 1px solid var(--blog-border);
    font-size: 0.85rem;
}
.blog-modal__post .modal-references strong {
    display: block;
    margin-bottom: 0.7rem;
    color: var(--blog-text);
    font-size: 0.95rem;
}
.blog-modal__post .modal-references ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.blog-modal__post .modal-references li {
    padding: 0;
}
.blog-modal__post .modal-references a {
    color: var(--blog-accent);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
}
.blog-modal__post .modal-references a::before {
    content: "\f0c1";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.75rem;
    opacity: 0.7;
}
.blog-modal__post .modal-references a:hover {
    text-decoration: underline;
}

/* Modal open animation (content pop) */
.blog-modal__content {
    animation: blogModalPop 0.35s cubic-bezier(0.2, 0, 0, 1);
}
@keyframes blogModalPop {
    from { opacity: 0; transform: scale(0.96) translateY(12px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    .blog-modal__content { animation: none; }
}

/* ---------- Responsive ---------- */
@media screen and (max-width: 768px) {
    .blog .container {
        padding: 0 1rem;      /* even smaller padding on mobile */
    }
    .blog__grid {
        grid-template-columns: 1fr;
        justify-items: center;
    }
    .blog__filters {
        justify-content: flex-start;
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 0.5rem;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        gap: 0.4rem;
        margin-left: 0;
        margin-right: 0;
    }
    .blog__filters::-webkit-scrollbar {
        display: none;
    }
    .blog__filter-btn {
        flex: 0 0 auto;
        font-size: 0.75rem;
        padding: 0.3rem 0.8rem;
    }
    .blog-modal__content {
        padding: 1.5rem;
        width: 96%;
        max-height: 92vh;
    }
    .blog-modal__post h2 {
        font-size: 1.4rem;
    }
    .blog-modal__post .modal-content h2 {
        font-size: 1.25rem;
        margin: 2rem 0 0.8rem;
    }
    .blog-modal__post .modal-content h3 {
        font-size: 1.05rem;
        margin: 1.6rem 0 0.7rem;
    }
    .blog-modal__post .modal-content p,
    .blog-modal__post .modal-content ul li,
    .blog-modal__post .modal-content ol li {
        font-size: 0.92rem;
    }
    .blog-modal__post .modal-content table {
        font-size: 0.82rem;
    }
    .blog-modal__post .modal-content thead th,
    .blog-modal__post .modal-content tbody td {
        padding: 0.55rem 0.7rem;
    }
}
@media screen and (max-width: 480px) {
    .blog .container {
        padding: 0 0.75rem;   /* extra small screens */
    }
    .blog__body {
        padding: 1.2rem 1rem 1.6rem;  /* reduce horizontal padding */
    }
    .blog__card {
        max-width: 100%;
        margin: 0;           /* ensure no extra margins */
    }
    .blog__meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.2rem;
    }
    .blog-modal__post .modal-content .blog-callout {
        flex-direction: column;
        gap: 0.5rem;
        padding: 1rem;
    }
    .blog-modal__post .modal-content ul li,
    .blog-modal__post .modal-content ol li {
        padding-left: 1.5rem;
    }
}