/* ==========================================================================
   blog.css — Page-specific overrides for /blog
   Depends on: design-system.css, style.css, backgrounds.css
   Scope: hero + coming-soon empty state
   ========================================================================== */

/* ---------- page hero (shared pattern with products/about) ---------- */
.page-hero {
    position: relative;
    padding: 120px 0 72px;
    overflow: hidden;
    border-bottom: 1px solid var(--line);
}
.page-hero .scene { z-index: 0; }
.page-hero .container { position: relative; z-index: 1; }
.page-hero-inner { max-width: 720px; }
.page-hero-inner .eyebrow { margin-bottom: 20px; }
.page-hero-title {
    font-size: clamp(36px, 5.4vw, 64px);
    letter-spacing: -0.035em;
    font-weight: 500;
    line-height: 1.02;
    margin: 0 0 18px;
    background: linear-gradient(110deg, #E6F4FF 0%, #4DD4FF 50%, #7BE6FF 100%);
    -webkit-background-clip: text;
            background-clip: text;
    color: transparent;
    filter: drop-shadow(0 0 24px rgba(0, 191, 255, 0.25));
}
.page-hero-subtitle {
    font-size: clamp(16px, 1.6vw, 19px);
    color: var(--ink-2);
    line-height: 1.55;
    margin: 0;
    max-width: 580px;
}

/* ---------- empty state ---------- */
.blog-main { padding: 80px 0 120px; }

.no-posts {
    position: relative;
    max-width: 760px;
    margin: 0 auto;
    padding: 72px 48px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: linear-gradient(180deg, rgba(11, 20, 48, 0.55), rgba(7, 13, 31, 0.35));
    overflow: hidden;
    text-align: center;
}
.no-posts::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(0, 191, 255, 0.12), transparent 60%);
    pointer-events: none;
}
.no-posts .scene-empty-blog {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0.18;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    margin: 0;
    pointer-events: none;
}
.no-posts-body {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
}
.no-posts-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line-2);
    background: linear-gradient(135deg, rgba(0, 191, 255, 0.18), rgba(0, 110, 184, 0.08));
    color: var(--blue-glow);
    box-shadow: 0 0 28px -6px rgba(0, 212, 255, 0.55), inset 0 0 10px rgba(0, 191, 255, 0.12);
    font-size: 22px;
}
.no-posts h3 {
    margin: 0;
    font-size: clamp(24px, 3vw, 34px);
    letter-spacing: -0.02em;
    font-weight: 500;
    color: var(--ink);
}
.no-posts p {
    margin: 0;
    max-width: 480px;
    color: var(--ink-2);
    font-size: 15px;
    line-height: 1.6;
}
.no-posts-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 8px;
}
.no-posts-meta .pill {
    padding: 6px 12px;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}
.no-posts-cta {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 12px;
}

/* ---------- responsive ---------- */
@media (max-width: 640px) {
    .page-hero { padding: 80px 0 48px; }
    .no-posts { padding: 56px 24px; }
    .no-posts-cta { flex-direction: column; width: 100%; }
    .no-posts-cta .cta { width: 100%; justify-content: center; }
}

/* ---------- filters ---------- */
.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0 0 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
}
.blog-filters .chip {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--ink-2);
    font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.05em;
    text-decoration: none;
    transition: border-color .2s, color .2s, background .2s;
}
.blog-filters .chip:hover {
    border-color: var(--blue-glow);
    color: var(--ink);
}
.blog-filters .chip.is-active {
    background: rgba(108, 196, 255, 0.12);
    border-color: var(--blue-glow);
    color: var(--ink);
}

/* ---------- grid ---------- */
.blog-grid {
    display: grid;
    gap: 28px;
    grid-template-columns: 1fr;
}
@media (min-width: 720px)  { .blog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1080px) { .blog-grid { grid-template-columns: repeat(3, 1fr); } }

.blog-card {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(11, 20, 48, 0.45), rgba(7, 13, 31, 0.25));
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.blog-card:hover {
    transform: translateY(-4px);
    border-color: var(--blue-glow);
    box-shadow: 0 18px 48px -22px rgba(0, 120, 200, 0.45);
}
.blog-card-media {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(0,191,255,0.10), rgba(123,230,255,0.04));
}
.blog-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.blog-card-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    color: rgba(108, 196, 255, 0.35);
    font-size: 40px;
}
.blog-card-cat {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 5px 10px;
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink);
    background: rgba(5, 10, 26, 0.75);
    border: 1px solid var(--line-2);
    border-radius: 999px;
    backdrop-filter: blur(6px);
}
.blog-card-body {
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.blog-card-title {
    font-size: 19px;
    line-height: 1.3;
    font-weight: 500;
    margin: 0;
    color: var(--ink);
    letter-spacing: -0.01em;
}
.blog-card-excerpt {
    font-size: 14.5px;
    line-height: 1.55;
    color: var(--ink-2);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.blog-card-meta {
    margin-top: auto;
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 12px;
    color: var(--ink-3, var(--ink-2));
    padding-top: 10px;
    border-top: 1px solid var(--line);
}
.blog-card-meta i { font-size: 10px; color: var(--blue-glow); margin-right: 4px; }

/* ---------- pagination ---------- */
.blog-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin: 56px 0 0;
    flex-wrap: wrap;
}
.blog-pagination .mono {
    color: var(--ink-2);
    font-size: 12px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}