/**
 * ============================================================================
 * ELEVATION AI SOLUTIONS - Blog Stylesheet
 * ============================================================================
 */

/* =============================================================================
   BLOG LISTING PAGE
   ============================================================================= */

.blog-hero {
    min-height: 50vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--nav-height) + var(--space-10));
    padding-bottom: var(--space-10);
}

.blog-hero__content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.blog-hero__description {
    max-width: 540px;
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
}

/* Blog Listing Grid */
.blog-listing {
    padding-bottom: var(--space-12);
}

.blog-listing__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.blog-listing__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

/* Blog Card */
.blog-card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
}

.blog-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.blog-card__image {
    width: 100%;
    aspect-ratio: 2 / 1;
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.blog-card__svg {
    width: 100%;
    height: 100%;
}

.blog-card__body {
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    flex: 1;
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    font-size: var(--text-xs);
}

.blog-card__category {
    color: var(--color-accent-primary);
    font-family: var(--font-heading);
    font-weight: 500;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.blog-card__date {
    color: var(--color-text-tertiary);
}

.blog-card__title {
    font-size: var(--text-2xl);
    line-height: 1.2;
}

.blog-card__excerpt {
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: 1.7;
    flex: 1;
}

.blog-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-accent-primary);
    margin-top: var(--space-2);
}

.blog-card__link svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.blog-card:hover .blog-card__link svg {
    transform: translateX(4px);
}

/* Featured card - wider layout on desktop */
.blog-card--featured {
    grid-column: 1 / -1;
}

@media (min-width: 768px) {
    .blog-listing__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .blog-card--featured {
        grid-column: 1 / -1;
        flex-direction: row;
    }

    .blog-card--featured .blog-card__image {
        width: 50%;
        aspect-ratio: auto;
        min-height: 300px;
    }

    .blog-card--featured .blog-card__body {
        width: 50%;
        padding: var(--space-8);
        justify-content: center;
    }

    .blog-card--featured .blog-card__title {
        font-size: var(--text-3xl);
    }
}

/* =============================================================================
   BLOG ARTICLE PAGE
   ============================================================================= */

.blog-article__hero {
    padding-top: calc(var(--nav-height) + var(--space-8));
    padding-bottom: var(--space-8);
    background: var(--color-bg-secondary);
}

.blog-article__hero-content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.blog-article__meta-top {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
}

.blog-article__back {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.blog-article__back svg {
    width: 18px;
    height: 18px;
}

.blog-article__back:hover {
    color: var(--color-accent-primary);
}

.blog-article__category {
    font-family: var(--font-heading);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-primary);
    padding: var(--space-1) var(--space-3);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: var(--radius-full);
}

.blog-article__title {
    font-size: var(--text-4xl);
    line-height: 1.1;
    margin-bottom: var(--space-5);
    max-width: 900px;
}

.blog-article__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin-bottom: var(--space-6);
    line-height: 1.7;
}

.blog-article__meta {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.blog-article__date,
.blog-article__read-time {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-text-tertiary);
}

.blog-article__date svg,
.blog-article__read-time svg {
    width: 16px;
    height: 16px;
    color: var(--color-accent-primary);
}

/* Hero Graphic */
.blog-article__hero-graphic {
    max-width: var(--container-max);
    margin: var(--space-8) auto 0;
    padding: 0 var(--container-padding);
}

.blog-hero-svg {
    width: 100%;
    max-height: 260px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

/* Article Body */
.blog-article__body {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-10) var(--container-padding);
}

.blog-article__content {
    max-width: 780px;
    margin: 0 auto;
}

/* Article Typography */
.blog-article__content h2 {
    font-size: var(--text-3xl);
    margin-top: var(--space-10);
    margin-bottom: var(--space-5);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
}

.blog-article__content h2:first-of-type {
    border-top: none;
    padding-top: 0;
}

.blog-article__content h3 {
    font-size: var(--text-xl);
    margin-top: var(--space-7);
    margin-bottom: var(--space-3);
    color: var(--color-accent-primary);
}

.blog-article__content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-5);
}

.blog-article__content strong {
    color: var(--color-text-primary);
    font-weight: 500;
}

.blog-article__lead {
    font-size: var(--text-lg);
    line-height: 1.8;
    color: var(--color-text-secondary);
    border-left: 3px solid var(--color-accent-primary);
    padding-left: var(--space-5);
    margin-bottom: var(--space-8);
}

.blog-article__content blockquote {
    padding: var(--space-6);
    padding-left: var(--space-6);
    border-left: 3px solid var(--color-accent-tertiary);
    background: rgba(168, 85, 247, 0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-size: var(--text-lg);
    font-style: italic;
    color: var(--color-text-secondary);
    margin: var(--space-8) 0;
}

/* Table of Contents */
.blog-article__toc {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-8);
}

.blog-article__toc h2 {
    font-size: var(--text-lg);
    margin: 0 0 var(--space-4) 0;
    padding: 0;
    border: none;
    color: var(--color-text-primary);
}

.blog-article__toc ol {
    list-style: none;
    counter-reset: toc;
    padding: 0;
    margin: 0;
}

.blog-article__toc li {
    counter-increment: toc;
    margin-bottom: var(--space-2);
}

.blog-article__toc li::before {
    content: counter(toc, decimal-leading-zero) ". ";
    color: var(--color-accent-primary);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--text-sm);
}

.blog-article__toc a {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.blog-article__toc a:hover {
    color: var(--color-accent-primary);
}

/* =============================================================================
   BLOG COMPONENTS
   ============================================================================= */

/* Stat Grid */
.blog-stat-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin: var(--space-8) 0;
}

.blog-stat-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.blog-stat-card__icon {
    width: 80px;
    height: 80px;
    flex-shrink: 0;
}

.blog-stat-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.5;
}

@media (min-width: 768px) {
    .blog-stat-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .blog-stat-card {
        flex-direction: column;
        text-align: center;
    }
}

/* Infographic: Bar Chart */
.blog-infographic {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin: var(--space-8) 0;
}

.blog-infographic__title {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: var(--text-lg);
    margin-bottom: var(--space-5);
    color: var(--color-text-primary);
}

.blog-infographic__bars {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.blog-bar {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.blog-bar__label {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    min-width: 120px;
}

.blog-bar__track {
    width: 100%;
    height: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.blog-bar__fill {
    height: 100%;
    background: linear-gradient(90deg, rgba(0, 240, 255, 0.3), rgba(0, 240, 255, 0.6));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--space-3);
    transition: width 1s ease;
}

.blog-bar__fill span {
    font-family: var(--font-heading);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text-primary);
}

.blog-bar__fill--coral {
    background: linear-gradient(90deg, rgba(255, 107, 74, 0.3), rgba(255, 107, 74, 0.6));
}

.blog-bar__fill--purple {
    background: linear-gradient(90deg, rgba(168, 85, 247, 0.3), rgba(168, 85, 247, 0.6));
}

.blog-infographic__caption {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--space-4);
    text-align: center;
}

/* Graphic Box (flow diagrams) */
.blog-graphic-box {
    margin: var(--space-8) 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    overflow-x: auto;
}

.blog-flow-svg {
    width: 100%;
    min-width: 600px;
    height: auto;
}

.blog-graphic-box__caption {
    font-size: var(--text-xs);
    color: var(--color-text-tertiary);
    text-align: center;
    margin-top: var(--space-3);
    margin-bottom: 0;
}

/* Callout Box */
.blog-callout {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-6);
    background: rgba(0, 240, 255, 0.05);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: var(--radius-lg);
    margin: var(--space-8) 0;
}

.blog-callout__icon {
    flex-shrink: 0;
}

.blog-callout__icon svg {
    width: 24px;
    height: 24px;
}

.blog-callout__content {
    font-size: var(--text-sm);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.blog-callout__content strong {
    color: var(--color-accent-primary);
}

/* Steps */
.blog-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    margin: var(--space-6) 0 var(--space-8);
}

.blog-step {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-5);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast);
}

.blog-step:hover {
    border-color: var(--color-border-hover);
}

.blog-step__number {
    font-family: var(--font-heading);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--color-border);
    line-height: 1;
    flex-shrink: 0;
}

.blog-step__content h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

.blog-step__content p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin: 0;
    line-height: 1.7;
}

/* Blog CTA */
.blog-cta {
    text-align: center;
    padding: var(--space-10) var(--space-6);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin: var(--space-10) 0;
}

.blog-cta h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.blog-cta p {
    max-width: 600px;
    margin: 0 auto var(--space-6);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Sources */
.blog-sources {
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-8);
}

.blog-sources h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
}

.blog-sources ul {
    list-style: none;
    padding: 0;
}

.blog-sources li {
    padding: var(--space-2) 0;
    font-size: var(--text-sm);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.blog-sources a {
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
}

.blog-sources a:hover {
    color: var(--color-accent-primary);
}

/* Tags */
.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-8);
}

.blog-tag {
    font-family: var(--font-heading);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.02em;
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-tertiary);
}

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

@media (max-width: 767px) {
    .blog-article__title {
        font-size: var(--text-3xl);
    }

    .blog-callout {
        flex-direction: column;
    }

    .blog-step {
        flex-direction: column;
        gap: var(--space-3);
    }
}