/* =============================================
   Resource Pages — Stylesheet
   Loaded after base.css on resource pages
   ============================================= */

:root {
    /* Resource-specific tag colors */
    --tag-technology: #5c3d8f;
    --tag-technology-bg: #f0e8f8;
    --tag-primary-sources: #8c5a2a;
    --tag-primary-sources-bg: #f8f0e8;
    --tag-gamification: #2a6b4a;
    --tag-gamification-bg: #e6f4ed;
    --tag-directed-lectures: #2a5a8c;
    --tag-directed-lectures-bg: #e8f0f8;
    --tag-critical-thinking: #8c2a5a;
    --tag-critical-thinking-bg: #f8e8f0;
    --tag-strategy: #5a6270;
    --tag-strategy-bg: #eef0f2;
    --tag-teaching-notes: #7a5230;
    --tag-teaching-notes-bg: #f5ede4;
}

/* ================================================
   RESOURCE INDEX PAGE
   ================================================ */

/* Page Header */
.resource-header {
    background: var(--color-primary);
    color: #fff;
    padding: 7rem 2rem 3rem;
}

.resource-header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.resource-header-back {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
    transition: color 0.2s;
}

.resource-header-back:hover {
    color: rgba(255, 255, 255, 0.85);
}

.resource-header h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.75rem;
}

.resource-header p {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.65);
    max-width: 650px;
}

/* Filter Bar */
.filter-bar {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: 1.25rem 2rem;
    position: sticky;
    top: var(--nav-height);
    z-index: 100;
}

.filter-bar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-label {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-light);
    margin-right: 0.5rem;
}

.filter-btn {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    border: 1.5px solid var(--color-border);
    background: #fff;
    color: var(--color-text-light);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

/* Resource Card Grid */
.resource-grid-section {
    padding: 3rem 0 5rem;
}

.resource-grid {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.resource-card {
    display: block;
    background: #fff;
    border-radius: 10px;
    padding: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
}

.resource-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.resource-card .card-accent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-accent);
}

.resource-card-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.resource-tag {
    font-family: var(--font-heading);
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 0.25rem 0.65rem;
    border-radius: 3px;
}

.resource-tag-technology {
    color: var(--tag-technology);
    background: var(--tag-technology-bg);
}

.resource-tag-primary-sources {
    color: var(--tag-primary-sources);
    background: var(--tag-primary-sources-bg);
}

.resource-tag-gamification {
    color: var(--tag-gamification);
    background: var(--tag-gamification-bg);
}

.resource-tag-directed-lectures {
    color: var(--tag-directed-lectures);
    background: var(--tag-directed-lectures-bg);
}

.resource-tag-critical-thinking {
    color: var(--tag-critical-thinking);
    background: var(--tag-critical-thinking-bg);
}

.resource-tag-strategy {
    color: var(--tag-strategy);
    background: var(--tag-strategy-bg);
}

.resource-tag-teaching-notes {
    color: var(--tag-teaching-notes);
    background: var(--tag-teaching-notes-bg);
}

.resource-card-date {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.6rem;
}

.resource-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.6rem;
    line-height: 1.4;
}

.resource-card p {
    color: var(--color-text-light);
    font-size: 0.92rem;
    line-height: 1.6;
}

.resource-card-read {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-top: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

/* No results */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: 1rem;
}

/* ================================================
   INDIVIDUAL RESOURCE ARTICLE PAGE
   ================================================ */

/* Article Hero */
.article-hero {
    background: var(--color-primary);
    color: #fff;
    padding: 7rem 2rem 3.5rem;
}

.article-hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.article-hero-back {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 1.5rem;
    transition: color 0.2s;
}

.article-hero-back:hover {
    color: rgba(255, 255, 255, 0.85);
}

.article-hero-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.article-hero-tags .resource-tag {
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.8);
}

.article-hero h1 {
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin-bottom: 1rem;
    max-width: 800px;
}

.article-hero-meta {
    font-family: var(--font-heading);
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.55);
}

.article-hero-meta strong {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 600;
}

/* Article Body */
.article-body {
    padding: 3.5rem 0 5rem;
}

.article-body-inner {
    max-width: 740px;
    margin: 0 auto;
    padding: 0 2rem;
}

.article-body-inner h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.article-body-inner h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.article-body-inner p {
    color: var(--color-text);
    margin-bottom: 1.25rem;
    font-size: 1rem;
    line-height: 1.85;
}

.article-body-inner blockquote {
    border-left: 4px solid var(--color-accent);
    margin: 2rem 0;
    padding: 1.25rem 1.75rem;
    background: var(--color-bg-alt);
    border-radius: 0 8px 8px 0;
    color: var(--color-text);
    font-style: italic;
}

.article-body-inner ul,
.article-body-inner ol {
    margin: 1rem 0 1.5rem 1.5rem;
    color: var(--color-text);
}

.article-body-inner li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

/* Callout boxes */
.article-callout {
    background: var(--color-bg-alt);
    border-radius: 10px;
    padding: 1.75rem 2rem;
    margin: 2rem 0;
    border-left: 4px solid var(--color-primary);
}

.article-callout h4 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.article-callout p {
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* Related courses / resources */
.article-related {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid var(--color-border);
}

.article-related h2 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1rem;
    margin-top: 0;
}

.article-related-links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.article-related-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--color-bg-alt);
    border-radius: 8px;
    text-decoration: none;
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    transition: background 0.2s, transform 0.2s;
}

.article-related-link:hover {
    background: var(--color-border);
    transform: translateX(4px);
}

.article-related-link .link-icon {
    font-size: 1.2rem;
    flex: 0 0 1.5rem;
    text-align: center;
}

.article-related-link .link-arrow {
    margin-left: auto;
    color: var(--color-accent);
    font-size: 1rem;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .resource-header {
        padding: 6rem 1.5rem 2.5rem;
    }

    .resource-header h1 {
        font-size: 2rem;
    }

    .resource-grid {
        grid-template-columns: 1fr;
        padding: 0 1.5rem;
    }

    .filter-bar-inner {
        gap: 0.5rem;
    }

    .article-hero {
        padding: 6rem 1.5rem 2.5rem;
    }

    .article-hero h1 {
        font-size: 1.8rem;
    }

    .article-body-inner {
        padding: 0 1.5rem;
    }
}