/* =========================================
   BLOG.CSS
   Shared Blog System: Index grid + primitives
   reused by /blog/ and every /blog/<post>/ page,
   and by the future /es/ twin (no fork).
   ========================================= */

:root {
    --blog-content-max: 1300px;
}

/* --- Shared background: fine grid + radial mask, matches case-study pages --- */
.blog::before,
.blog-post::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 120px 120px;
    mask-image: radial-gradient(circle at center, rgba(0, 0, 0, 0.75), transparent 90%);
    opacity: 0.18;
    z-index: 0;
}

.blog,
.blog-post {
    position: relative;
    background: var(--bg);
    color: var(--text);
    overflow: clip;
}

/* --- Shared kicker (category / eyebrow label) --- */
.blog-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.28em;
    color: rgba(232, 229, 240, 0.74);
    margin-bottom: 1.5rem;
}

.blog-kicker::before {
    content: "";
    width: 48px;
    height: 1px;
    background: rgba(232, 229, 240, 0.32);
}

/* --- Shared glass-card primitive --- */
.blog-glass {
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(232, 229, 240, 0.1);
    border-radius: 24px;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.015)),
        rgba(10, 12, 14, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform 0.55s var(--transition-smooth), border-color 0.45s ease;
}

.blog-glass::before {
    content: "";
    position: absolute;
    inset: auto auto -28% -10%;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1), transparent 66%);
    opacity: 0.45;
    pointer-events: none;
    transition: opacity 0.5s ease, transform 0.55s var(--transition-smooth);
}

/* --- Shared centered section head --- */
.blog-section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 4rem;
}

.blog-section-head .blog-kicker {
    justify-content: center;
}

.blog-section-head h2 {
    font-family: var(--font-sans);
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    color: #e8e5f0;
    font-weight: 400;
    margin: 0.6rem 0 0;
}

.blog-section-head p {
    max-width: 56ch;
    margin: 1rem auto 0;
}

/* --- Title char-split reveal (used on index hero + every article hero) --- */
.bt-word {
    display: inline-block;
    white-space: nowrap;
}

.bt-char {
    display: inline-block;
    opacity: 0;
    transform: translateY(0.6em);
    will-change: transform, opacity, filter;
}

/* =========================================
   INDEX HERO
   ========================================= */

.blog-hero {
    position: relative;
    padding: 17vh 5vw 8rem;
    z-index: 1;
}

.blog-hero::after {
    content: "";
    position: absolute;
    inset: 8% -10% auto auto;
    width: clamp(260px, 34vw, 620px);
    height: clamp(260px, 34vw, 620px);
    border-radius: 999px;
    background:
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.14), transparent 45%),
        radial-gradient(circle at 60% 65%, rgba(255, 255, 255, 0.06), transparent 48%);
    filter: blur(18px);
    opacity: 0.55;
    pointer-events: none;
}

.blog-hero-inner {
    position: relative;
    width: min(var(--blog-content-max), 100%);
    margin: 0 auto;
}

.blog-hero-title {
    font-family: var(--font-raleway);
    font-size: clamp(3.6rem, 8vw, 7.5rem);
    line-height: 0.94;
    letter-spacing: -0.04em;
    color: #e8e5f0;
    font-weight: 300;
    margin: 1rem 0 1.75rem;
    text-wrap: balance;
    max-width: 16ch;
}

.blog-hero-dek {
    max-width: 52ch;
    font-size: clamp(1.05rem, 1.6vw, 1.35rem);
    line-height: 1.7;
    color: rgba(232, 229, 240, 0.74);
    margin: 0;
}

/* =========================================
   ARTICLE GRID
   ========================================= */

.blog-grid-section {
    padding: 0 5vw 16vh;
    z-index: 1;
    position: relative;
}

.blog-grid {
    width: min(var(--blog-content-max), 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(1.5rem, 3vw, 2.5rem);
}

.blog-card {
    position: relative;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    border-radius: 20px;
    overflow: hidden;
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.75s var(--transition-smooth), transform 0.75s var(--transition-smooth);
}

.blog-grid.is-visible .blog-card {
    opacity: 1;
    transform: translateY(0);
}

.blog-grid.is-visible .blog-card:nth-child(1) { transition-delay: 0s; }
.blog-grid.is-visible .blog-card:nth-child(2) { transition-delay: 0.08s; }
.blog-grid.is-visible .blog-card:nth-child(3) { transition-delay: 0.16s; }
.blog-grid.is-visible .blog-card:nth-child(4) { transition-delay: 0.24s; }
.blog-grid.is-visible .blog-card:nth-child(5) { transition-delay: 0.32s; }
.blog-grid.is-visible .blog-card:nth-child(6) { transition-delay: 0.4s; }

/* Featured (first) card spans full width, larger media */
.blog-card--featured {
    grid-column: 1 / -1;
    flex-direction: row;
    align-items: stretch;
}

.blog-card-media {
    position: relative;
    overflow: hidden;
    background: var(--bg-alt);
    aspect-ratio: 4 / 3;
}

.blog-card--featured .blog-card-media {
    flex: 1 1 56%;
    aspect-ratio: auto;
}

.blog-card-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.9s cubic-bezier(0.19, 1, 0.22, 1);
}

.blog-card:hover .blog-card-media img {
    transform: scale(1.045);
}

.blog-card-media::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.55) 0%, transparent 45%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.blog-card:hover .blog-card-media::after {
    opacity: 1;
}

.blog-card-body {
    padding: 1.6rem 0.1rem 0;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.blog-card--featured .blog-card-body {
    flex: 1 1 44%;
    padding: 2.2rem 2.6rem 2.2rem 2.8rem;
    justify-content: center;
}

.blog-card-kicker {
    font-family: var(--font-sans);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: rgba(232, 229, 240, 0.6);
    margin-bottom: 0.85rem;
}

.blog-card-title {
    font-family: var(--font-sans);
    font-weight: 400;
    font-size: 1.35rem;
    line-height: 1.25;
    color: #e8e5f0;
    margin: 0 0 0.75rem;
    letter-spacing: -0.01em;
    text-wrap: balance;
    transition: opacity 0.3s ease;
}

.blog-card--featured .blog-card-title {
    font-family: var(--font-raleway);
    font-weight: 300;
    font-size: clamp(2rem, 3vw, 2.75rem);
    line-height: 1.08;
}

.blog-card-dek {
    font-size: 0.98rem;
    line-height: 1.6;
    color: rgba(232, 229, 240, 0.68);
    margin: 0 0 1.25rem;
    max-width: 46ch;
}

.blog-card-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.75rem;
    letter-spacing: 0.04em;
    color: rgba(232, 229, 240, 0.5);
}

.blog-card-meta-dot {
    width: 3px;
    height: 3px;
    border-radius: 50%;
    background: currentColor;
    flex: none;
}

.blog-card-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.1rem;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: #e8e5f0;
}

.blog-card-cta svg {
    transition: transform 0.35s cubic-bezier(0.19, 1, 0.22, 1);
}

.blog-card:hover .blog-card-cta svg {
    transform: translateX(6px);
}

/* =========================================
   RESPONSIVE
   ========================================= */

@media (max-width: 900px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-card--featured {
        flex-direction: column;
    }

    .blog-card--featured .blog-card-media {
        aspect-ratio: 4 / 3;
    }

    .blog-card--featured .blog-card-body {
        padding: 1.6rem 0.1rem 0;
    }
}

@media (max-width: 768px) {
    .blog-hero {
        padding: 14vh 6vw 5rem;
    }

    .blog-hero-title {
        max-width: 100%;
    }

    .blog-grid-section {
        padding: 0 6vw 10vh;
    }

    .blog-section-head {
        margin-bottom: 2.75rem;
    }
}

/* Disabled (Coming Soon) cards */
.blog-card--disabled {
    cursor: default;
    filter: grayscale(100%);
}
.blog-grid.is-visible .blog-card--disabled {
    opacity: 0.6;
}
.blog-card--disabled:hover .blog-card-media img {
    transform: none;
}
.blog-card--disabled:hover .blog-card-media::after {
    opacity: 0;
}