/* page/src/assets/article.css */

/* --- Article Header & Layout --- */
.article-header {
    position: fixed;
    top: 5px;
    left: 0;
    right: 0;
    width: calc(100% - 16px);
    max-width: var(--container-max);
    margin: 0 auto 0;
    z-index: 1000;
    transition: all var(--transition-base);
    border-radius: 999px;
}

.article-hero {
    text-align: center;
    padding: calc(80px + var(--space-4xl)) var(--space-lg) var(--space-3xl);
    background: radial-gradient(circle at 50% 0%, var(--accent-subtle) 0%, transparent 50%),
        linear-gradient(180deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    position: relative;
    overflow: hidden;
}

.article-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    --dot-space: 16px;
    background: radial-gradient(circle at var(--dot-size) var(--dot-size), var(--border-default) calc(var(--dot-size) / 2), transparent 0);
    background-size: var(--dot-space) var(--dot-space);
    mask-image: linear-gradient(to top, black 0%, transparent 60%);
}

.article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-lg);
    color: var(--text-secondary);
    font-size: 14px;
    margin-top: var(--space-lg);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.article-meta-item svg {
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
}

.article-title {
    font-size: clamp(40px, 6vw, 64px);
    font-weight: 800;
    letter-spacing: -2px;
    line-height: 1.1;
    max-width: 20ch;
    margin: 0 auto;
}

.article-description {
    font-size: clamp(18px, 2.5vw, 22px);
    color: var(--text-secondary);
    max-width: 65ch;
    margin: var(--space-lg) auto 0;
    line-height: 1.6;
}

.article-body {
    max-width: 720px;
    margin: var(--space-3xl) auto var(--space-5xl);
    padding: 0 var(--space-lg);
    font-size: 18px;
    line-height: 1.8;
    color: var(--text-secondary);
}


/* --- Content Block Styles --- */
.article-body > * + * {
    margin-top: 1.75em;
}

.article-body h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -1px;
    line-height: 1.2;
    margin-top: 2.5em;
    padding-bottom: 0.3em;
    border-bottom: 1px solid var(--border-default);
}

.article-body h3 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin-top: 0.5em;
}

.article-body p {
    font-family: "SF Pro Text", -apple-system, BlinkMacSystemFont, sans-serif;
}

.article-body a:not(.btn-hero-primary) {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 2px solid var(--accent-subtle);
    transition: all var(--transition-fast);
}

.article-body a:not(.btn-hero-primary):hover {
    background-color: var(--accent-subtle);
}

.article-body strong {
    color: var(--text-primary);
    font-weight: 600;
}

.article-body ul, .article-body ol {
    padding-left: 1.5em;
}

.article-body li {
    margin-bottom: 0.5em;
}

.article-body li::marker {
    color: var(--accent-primary);
}

/* --- Block: Image --- */
.article-image-block {
    margin: 2.5em 0;
}

.article-image {
    width: 100%;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-lg);
}

.article-image-caption {
    font-size: 14px;
    text-align: center;
    color: var(--text-tertiary);
    margin-top: var(--space-md);
}

/* --- Block: Quote --- */
.article-quote-block {
    margin: 2em 0;
    padding-left: 1.5em;
    border-left: 4px solid var(--accent-primary);
}

.article-quote-text {
    font-size: 1.25rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.6;
}

.article-quote-author {
    font-style: normal;
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.5em;
}

.article-quote-author::before {
    content: "— ";
}

/* --- Block: InfoBox / Key Takeaway --- */
.article-infobox-block {
    background-color: var(--bg-secondary50);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: var(--space-lg) var(--space-xl);
    margin: 1em calc(var(--space-xl) * -1) 2rem;
}

h3.infobox-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--accent-primary);
    margin: 0 0 var(--space-md) 0;
}

.infobox-title svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* --- Block: CTA Banner --- */
.article-cta-block {
    text-align: center; 
    padding: var(--space-2xl) var(--space-xl) var(--space-xl);
    border-radius: 56px;
    margin: 2.5em 0;
    border: 1px solid var(--border-default);
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 0 128px -64px var(--accent-gradient-end);
}

.article-cta-block::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 0;
    background: radial-gradient(circle at 121% 0%, var(--accent-primary) 0%, transparent 40%),  radial-gradient(circle at 0% 100%, var(--accent-subtle) 0%, transparent 40%);
    opacity: 0.5;
}

.article-cta-headline {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
    position: relative;
    z-index: 1;
}

.article-cta-description {
    max-width: 50ch;
    margin: 0 auto var(--space-xl);
    position: relative;
    z-index: 1;
}

/* --- Block: FAQ --- */
.article-faq-block {
    margin-top: 3em;
    border: none;
    padding: 0;
    background: transparent;
}
.article-faq-block .section-headline {
    border: none;
}
.article-faq-block .faq-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-default);
    border-radius: 0;
}
.article-faq-block .faq-item:first-child {
    border-top: 1px solid var(--border-default);
}
.article-faq-block .faq-item:hover {
    transform: none;
    box-shadow: none;
    background-color: var(--bg-secondary);
}

/* --- Final CTA Section --- */
.article-final-cta-section {
    background: var(--bg-secondary); 
}


/* --- Block: Feature Showcase --- */
.feature-showcase-block {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin: 2.5em 0;
}

.feature-showcase-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.feature-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    background-color: var(--bg-primary);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
}

.feature-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    color: var(--accent-primary);
    margin-top: 4px;
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-name {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}

.feature-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

@media (min-width: 640px) {
    .feature-showcase-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}