/* ============================================================
   Quale.dev - Research Paper Styles
   Extends styles.css for long-form article content
   ============================================================ */

.research-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 48px;
    font-size: 0.85rem;
}

.research-nav a {
    color: var(--color-text-dim);
}

.research-nav span {
    color: var(--color-text-dim);
}

/* --- Research Domain Tabs --- */
.research-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.research-tab {
    padding: 10px 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.research-tab:hover {
    border-color: var(--color-accent);
    color: var(--color-text);
}

.research-tab--active {
    background: rgba(108, 92, 231, 0.12);
    border-color: var(--color-accent);
    color: var(--color-accent-bright);
}

.research-domain__desc {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    margin-bottom: 24px;
    max-width: 720px;
}

/* --- Research Listing --- */
.research-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
}

.research-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: border-color 0.2s;
}

.research-item:hover {
    border-color: var(--color-accent);
}

.research-item__phase {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 12px;
    background: rgba(108, 92, 231, 0.15);
    color: var(--color-accent-bright);
}

.research-item__title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.research-item__title a {
    color: var(--color-text);
}

.research-item__title a:hover {
    color: var(--color-accent-bright);
}

.research-item__meta {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    margin-bottom: 12px;
}

.research-item__abstract {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.65;
}

/* --- Article Content --- */
.article {
    max-width: 800px;
    padding-top: 100px;
    padding-bottom: 80px;
}

.article__header {
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--color-border);
}

.article__phase {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 16px;
    background: rgba(108, 92, 231, 0.15);
    color: var(--color-accent-bright);
}

.article__title {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.article__meta {
    font-size: 0.85rem;
    color: var(--color-text-dim);
    line-height: 1.6;
}

.article__content h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-top: 48px;
    margin-bottom: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-subtle);
}

.article__content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 32px;
    margin-bottom: 12px;
}

.article__content p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 16px;
}

.article__content strong {
    color: var(--color-text);
}

.article__content em {
    color: var(--color-text);
}

.article__content ul, .article__content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.article__content li {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.75;
    margin-bottom: 6px;
}

.article__content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    margin-bottom: 24px;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.article__content th {
    text-align: left;
    padding: 10px 14px;
    color: var(--color-text-dim);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-card);
}

.article__content td {
    padding: 10px 14px;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-subtle);
}

.article__content pre {
    background: var(--color-bg-code);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius);
    padding: 16px 20px;
    overflow-x: auto;
    font-size: 0.8rem;
    line-height: 1.6;
    margin-bottom: 24px;
}

.article__content code {
    font-family: var(--font-mono);
    font-size: 0.85em;
}

.article__content p code {
    background: rgba(108, 92, 231, 0.1);
    color: var(--color-accent-bright);
    padding: 2px 6px;
    border-radius: 3px;
}

.article__content blockquote {
    border-left: 3px solid var(--color-accent);
    padding: 12px 20px;
    margin: 0 0 24px 0;
    background: rgba(108, 92, 231, 0.05);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.article__content blockquote p {
    color: var(--color-text);
    margin-bottom: 0;
}

/* --- Charts --- */
.chart-container {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin: 24px 0;
    position: relative;
}

.chart-toggle {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    gap: 0;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    z-index: 1;
}

.chart-toggle__btn {
    padding: 4px 10px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    background: transparent;
    color: var(--color-text-dim);
    border: none;
    cursor: pointer;
    transition: all 0.15s;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.chart-toggle__btn:hover {
    color: var(--color-text);
}

.chart-toggle__btn--active {
    background: rgba(108, 92, 231, 0.2);
    color: var(--color-accent-bright);
}

.chart-toggle__btn + .chart-toggle__btn {
    border-left: 1px solid var(--color-border);
}

.chart-table {
    display: none;
    overflow-x: auto;
}

.chart-table table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 0.8rem;
}

.chart-table th {
    text-align: left;
    padding: 8px 12px;
    color: var(--color-text-dim);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--color-border);
}

.chart-table td {
    padding: 8px 12px;
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border-subtle);
}

.chart-container canvas {
    width: 100%;
    display: block;
}

.chart-title {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 12px;
}

.chart-legend {
    display: flex;
    gap: 20px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.chart-legend__item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-text-dim);
}

.chart-legend__swatch {
    width: 16px;
    height: 3px;
    border-radius: 2px;
    display: block;
}

@media (max-width: 640px) {
    .article__title {
        font-size: 1.4rem;
    }

    .article__content h2 {
        font-size: 1.2rem;
    }

    .article__content table {
        font-size: 0.75rem;
    }

    .article__content th, .article__content td {
        padding: 6px 8px;
    }
}