/* ============================================================
   SOLACE BLOG — BLOG.CSS
   Blog index page: cards, grid, filters, hover interactions
   ============================================================ */

/* ---------- Static Sky (same as legal pages) ---------- */
#sky {
    background: linear-gradient(180deg, rgb(15, 15, 45) 0%, rgb(28, 28, 30) 100%);
}
[data-theme="light"] #sky {
    background: linear-gradient(180deg, rgb(200, 215, 240) 0%, rgb(242, 242, 247) 100%);
}

/* ---------- Blog Page Layout ---------- */
.blog-page {
    position: relative;
    z-index: 1;
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 6rem var(--content-padding) 4rem;
}

/* ---------- Back Link (reuse legal page pattern) ---------- */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    transition: color 0.2s;
}
.back-link:hover {
    color: var(--text-primary);
    opacity: 1;
}
.back-link svg {
    width: 16px;
    height: 16px;
}

/* ---------- Blog Header ---------- */
.blog-header {
    margin-bottom: 2.5rem;
}

.blog-title {
    font-size: clamp(2.5rem, 6vw, 3.75rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.blog-intro {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 640px;
}

/* ---------- Category Filter Pills ---------- */
.blog-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 100px;
    border: 1px solid var(--border-subtle);
    background: transparent;
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.filter-pill:hover {
    background: var(--bg-card);
    border-color: var(--border-medium);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.filter-pill.active {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-color: var(--interactive-blue);
    color: var(--interactive-blue);
    font-weight: 600;
}

.filter-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ---------- Featured Post Card ---------- */
.blog-card-featured {
    position: relative;
    border-radius: 20px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    overflow: hidden;
}

.blog-card-featured .card-title {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
}

.blog-card-featured .card-excerpt {
    max-width: 640px;
    -webkit-line-clamp: unset;
}

/* Gradient border glow on featured card */
.card-glow {
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    border-radius: 20px;
    background: conic-gradient(
        from 0deg,
        var(--interactive-blue),
        var(--moon-purple),
        var(--warm-amber),
        var(--interactive-blue)
    );
    z-index: -1;
    opacity: 0.15;
    animation: rotate-glow 8s linear infinite;
    filter: blur(1px);
}

/* ---------- Blog Grid ---------- */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

/* ---------- Blog Card ---------- */
.blog-card {
    position: relative;
    border-radius: 20px;
    padding: 2rem;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
                border-color 0.3s ease,
                box-shadow 0.4s ease;
}

.blog-card.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
}

/* Hover: lift + glow */
.blog-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2),
                0 0 0 1px rgba(255, 255, 255, 0.05);
}

[data-theme="light"] .blog-card:hover {
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
}

/* Shimmer sweep on hover */
.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.04),
        transparent
    );
    transition: left 0.6s ease;
    pointer-events: none;
    z-index: 1;
}

.blog-card:hover::before {
    left: 100%;
}

[data-theme="light"] .blog-card::before {
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
}

/* ---------- Card Content ---------- */
.card-content {
    position: relative;
    z-index: 2;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.card-category {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--category-color, var(--interactive-blue));
    background: color-mix(in srgb, var(--category-color, var(--interactive-blue)) 12%, transparent);
    padding: 0.25rem 0.75rem;
    border-radius: 100px;
}

.card-badge {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--warm-amber);
    background: rgba(255, 159, 10, 0.12);
    padding: 0.2rem 0.6rem;
    border-radius: 100px;
}

.card-title {
    font-size: clamp(1.15rem, 2.5vw, 1.35rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s;
}

.card-title a:hover {
    color: var(--interactive-blue);
    opacity: 1;
}

.card-excerpt {
    font-size: clamp(0.9rem, 2vw, 0.95rem);
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.card-date {
    font-weight: 500;
}

.card-read-time {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.card-read-time svg {
    color: var(--text-tertiary);
}

.card-separator {
    opacity: 0.5;
}

/* ---------- Empty State ---------- */
.blog-empty {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-tertiary);
    font-size: 1rem;
}

.blog-empty[hidden] {
    display: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-card-featured {
        padding: 1.75rem;
    }

    .blog-card {
        padding: 1.5rem;
    }

    .blog-filters {
        gap: 0.4rem;
    }

    .filter-pill {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}

@media (max-width: 480px) {
    .blog-page {
        padding-top: 4rem;
    }

    .blog-title {
        font-size: clamp(2rem, 8vw, 2.5rem);
    }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .blog-card {
        transition: none;
    }

    .blog-card:hover {
        transform: none;
    }

    .blog-card::before {
        display: none;
    }

    .card-glow {
        animation: none;
    }

    .filter-pill {
        transition: none;
    }

    .filter-pill:hover {
        transform: none;
    }
}