/* ============================================
   DETAIL PAGE — "FIELD GUIDE" VARIANT
   ============================================
   Editorial single-page flow. No tabs — content
   sections visible with progressive disclosure.
   Two-column on desktop: content + sticky sidebar.
   ============================================ */

/* ---- PAGE ---- */
body.fieldguide-page {
    background: var(--bg-page-warm, #FEF7F1);
}
body.fieldguide-page::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.025) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ---- HERO ---- */
.fg-hero {
    padding: var(--space-6) var(--space-6) var(--space-10);
    position: relative;
    z-index: 1;
}
.fg-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 75% 0%, var(--phase-learn-very-light, #FEF2F2) 0%, transparent 60%);
    pointer-events: none;
}
.fg-hero-inner {
    max-width: var(--container-xl, 1120px);
    margin: 0 auto;
    padding: 0 var(--space-6);
    position: relative;
    z-index: 1;
}

/* Breadcrumb */
.fg-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-1-5);
    font-size: var(--text-meta);
    color: var(--color-ink-faint);
    margin-bottom: var(--space-8);
}
.fg-breadcrumb a {
    color: var(--color-ink-muted);
    text-decoration: none;
    transition: color 120ms ease;
}
.fg-breadcrumb a:hover { color: var(--mainsite-primary); }
.fg-breadcrumb .icon { font-size: 14px; color: var(--color-ink-faint); }

/* Category pill */
.fg-category {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1-5);
    padding: var(--space-1) var(--space-3);
    border-radius: 100px;
    font-size: var(--text-micro);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-4);
}

/* Title */
.fg-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 2.875rem);
    font-weight: 700;
    letter-spacing: -0.035em;
    line-height: 1.1;
    color: var(--color-ink);
    margin-bottom: var(--space-4);
    max-width: 800px;
}

/* Overview */
.fg-hero-overview {
    font-size: var(--text-h4);
    line-height: 1.7;
    color: var(--color-ink-secondary);
    max-width: 720px;
    margin-bottom: var(--space-6);
}

/* Stats strip */
.fg-stats {
    display: flex;
    gap: 0;
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.07);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.fg-stat {
    flex: 1;
    padding: var(--space-3-5) var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-2-5);
    border-right: 1px solid rgba(0, 0, 0, 0.06);
}
.fg-stat:last-child { border-right: none; }
.fg-stat-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mainsite-very-light, #FEF2F2);
    border-radius: var(--radius-md, 8px);
    flex-shrink: 0;
}
.fg-stat-icon .icon { font-size: 20px; color: var(--mainsite-primary); }
.fg-stat-label {
    font-size: var(--text-micro);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-ink-faint);
    margin-bottom: 1px;
}
.fg-stat-value {
    font-size: var(--text-small);
    font-weight: 700;
    color: var(--color-ink);
}
.fg-stat-value:has(.fg-energy-dots) {
    display: flex;
    align-items: center;
    gap: 8px;
}
.fg-energy-dots {
    display: inline-flex;
    align-items: center;
    gap: 3px;
}
.fg-energy-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

/* ---- TWO-COLUMN LAYOUT ---- */
.fg-layout {
    max-width: var(--container-xl, 1120px);
    margin: 0 auto;
    padding: 0 var(--space-6) var(--space-12);
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--space-8);
    position: relative;
    z-index: 1;
}

/* ---- MAIN CONTENT ---- */
.fg-main {
    min-width: 0;
}

/* Section blocks */
.fg-section {
    margin-bottom: var(--space-6);
}

.fg-section-header {
    display: flex;
    align-items: center;
    gap: var(--space-2-5);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2-5);
    border-bottom: 2px solid var(--mainsite-very-light, #FEF2F2);
}
.fg-section-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mainsite-very-light, #FEF2F2);
    border-radius: var(--radius-md, 8px);
    flex-shrink: 0;
}
.fg-section-icon .icon { font-size: 18px; color: var(--mainsite-primary); }
.fg-section-title {
    font-family: var(--font-heading);
    font-size: var(--text-h3);
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--color-ink);
    margin: 0;
}

/* Section body */
.fg-section-body {
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-xl);
    padding: var(--space-5) var(--space-6);
}
.fg-section-body p,
.fg-section-body li {
    font-size: var(--text-ui);
    line-height: 1.7;
    color: var(--color-ink-secondary);
}
.fg-section-body p { margin-bottom: var(--space-3); }
.fg-section-body p:last-child { margin-bottom: 0; }
.fg-section-body ul,
.fg-section-body ol {
    padding-left: var(--space-5);
    margin: 0;
}
.fg-section-body li { margin-bottom: var(--space-1-5); }
.fg-section-body h3 {
    font-family: var(--font-heading);
    font-size: var(--text-h4);
    font-weight: 600;
    color: var(--color-ink);
    margin: var(--space-5) 0 var(--space-2-5);
    letter-spacing: -0.01em;
}
.fg-section-body h3:first-child { margin-top: 0; }

/* Collapsible sections (for optional content like Pitfalls) */
.fg-collapsible .fg-section-body {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--duration-slow) var(--ease-spring),
                opacity var(--duration-slow) var(--ease-default);
    opacity: 0;
}
.fg-collapsible .fg-section-body > * {
    overflow: hidden;
}
.fg-collapsible.is-open .fg-section-body {
    grid-template-rows: 1fr;
    opacity: 1;
}
.fg-collapsible .fg-section-header {
    cursor: pointer;
    transition: opacity var(--duration-fast) ease;
    user-select: none;
}
.fg-collapsible .fg-section-header:hover {
    opacity: 0.8;
}
.fg-collapsible .fg-section-header:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
    border-radius: var(--radius-md);
}
.fg-collapse-chevron {
    margin-left: auto;
    width: 18px;
    height: 18px;
    color: var(--color-ink-faint);
    transition: transform var(--duration-base) var(--ease-spring);
    flex-shrink: 0;
}
.fg-collapsible.is-open .fg-collapse-chevron {
    transform: rotate(180deg);
}

/* ---- WHEN TO USE — SPLIT PANEL ---- */
.fg-use-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}
.fg-use-panel {
    padding: var(--space-5);
    border-radius: var(--radius-lg, 12px);
}
.fg-use-panel.fg-use-yes {
    background: rgba(22, 163, 74, 0.04);
    border: 1px solid rgba(22, 163, 74, 0.12);
}
.fg-use-panel.fg-use-no {
    background: rgba(220, 38, 38, 0.04);
    border: 1px solid rgba(220, 38, 38, 0.10);
}
.fg-use-label {
    display: flex;
    align-items: center;
    gap: var(--space-1-5);
    font-size: var(--text-meta);
    font-weight: 700;
    margin-bottom: var(--space-3);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
.fg-use-label .icon { font-size: 18px; }
.fg-use-yes .fg-use-label { color: var(--color-success-dark, #16A34A); }
.fg-use-no .fg-use-label { color: var(--color-error-dark, #DC2626); }
.fg-use-panel ul { list-style: none; padding: 0; margin: 0; }
.fg-use-panel li {
    font-size: var(--text-small);
    line-height: 1.6;
    color: var(--color-ink-secondary);
    padding: var(--space-1) 0;
}
.fg-use-panel li + li {
    border-top: 1px solid rgba(0, 0, 0, 0.06);
}

/* ---- RESOURCE LINKS ---- */
.fg-resource-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    text-decoration: none;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: opacity 120ms ease;
}
.fg-resource-link:last-child { border-bottom: none; }
.fg-resource-link:hover { opacity: 0.75; }
.fg-resource-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mainsite-very-light, #FEF2F2);
    border-radius: var(--radius-md, 8px);
    flex-shrink: 0;
}
.fg-resource-icon .icon { font-size: 18px; color: var(--mainsite-primary); }
.fg-resource-info { flex: 1; min-width: 0; }
.fg-resource-title {
    font-size: var(--text-ui);
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 1px;
}
.fg-resource-meta {
    font-size: var(--text-meta);
    color: var(--color-ink-muted);
}
.fg-resource-link > .icon { font-size: 16px; color: var(--color-ink-faint); }

/* Script download */
.fg-script-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--mainsite-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--text-ui);
    transition: opacity 120ms ease;
}
.fg-script-link:hover { opacity: 0.75; }

/* Empty message */
.fg-empty {
    font-size: var(--text-ui);
    color: var(--color-ink-muted);
    font-style: italic;
    padding: var(--space-5);
    text-align: center;
    background: var(--gray-100, #F5F5F4);
    border-radius: var(--radius-lg, 12px);
}

/* Additional exercises intro */
.fg-additional-intro {
    font-size: var(--text-ui);
    color: var(--color-ink-muted);
    margin-bottom: var(--space-4);
}

/* ---- SIDEBAR ---- */
.fg-sidebar {
    position: relative;
}
.fg-sidebar-sticky {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

/* Action card */
.fg-actions-card {
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.fg-action-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2-5);
    padding: var(--space-2-5) var(--space-3);
    border-radius: var(--radius-md, 8px);
    font-family: var(--font-body);
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--color-ink-secondary);
    background: none;
    border: none;
    cursor: pointer;
    text-decoration: none;
    text-align: left;
    transition: all 120ms ease;
    width: 100%;
}
.fg-action-btn:hover {
    background: var(--mainsite-very-light, #FEF2F2);
    color: var(--mainsite-primary);
}
.fg-action-btn:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}
.fg-action-btn .icon { font-size: 20px; transition: transform var(--duration-fast) var(--ease-spring); }
.fg-action-btn:hover .icon { transform: scale(1.1); }
.fg-action-btn.is-active {
    background: var(--mainsite-very-light, #FEF2F2);
    color: var(--mainsite-primary);
}
.fg-action-btn.is-active .icon {
    color: var(--mainsite-primary);
}

/* Play/script download card */
.fg-download-card {
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
}
.fg-download-label {
    font-size: var(--text-micro);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-ink-faint);
    margin-bottom: var(--space-2-5);
}
.fg-download-card .ws-btn { width: 100%; justify-content: center; }

/* Submitted by */
.fg-submitted-by {
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.06);
    border-radius: var(--radius-xl);
    padding: var(--space-4);
}
.fg-submitted-label {
    font-size: var(--text-micro);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-ink-faint);
    margin-bottom: var(--space-1);
}
.fg-submitted-value {
    font-size: var(--text-small);
    font-weight: 500;
    color: var(--color-ink-secondary);
}

/* ---- RELATED SECTIONS ---- */
.fg-related {
    padding: var(--space-10) var(--space-6);
    position: relative;
    z-index: 1;
}
.fg-related + .fg-related {
    padding-top: 0;
}
.fg-related-inner {
    max-width: var(--container-xl, 1120px);
    margin: 0 auto;
}
.fg-related-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}
.fg-related-header h2 {
    font-family: var(--font-heading);
    font-size: var(--text-h2);
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: -0.015em;
}
.fg-related-header a {
    font-size: var(--text-meta);
    color: var(--mainsite-primary);
    text-decoration: none;
    font-weight: 500;
}
.fg-related-header a:hover { text-decoration: underline; }

.fg-related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-4);
}

.fg-related-card {
    background: var(--bg-surface);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    text-decoration: none;
    transition: transform var(--duration-base) var(--ease-spring),
                box-shadow var(--duration-base) var(--ease-default),
                border-color var(--duration-fast) ease;
}
.fg-related-card:hover {
    border-color: var(--mainsite-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.fg-related-card:focus-visible {
    outline: var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}
.fg-related-card-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md, 8px);
    margin-bottom: var(--space-3);
}
.fg-related-card-icon .icon { font-size: 20px; }
.fg-related-card-type {
    display: inline-block;
    font-size: var(--text-micro);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-ink-muted);
    background: var(--gray-100, #F5F5F4);
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: var(--space-1-5);
}
.fg-related-card h4 {
    font-family: var(--font-heading);
    font-size: var(--text-h4);
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: var(--space-1);
    letter-spacing: -0.01em;
}
.fg-related-card p {
    font-size: var(--text-meta);
    color: var(--color-ink-muted);
}

/* ---- COMMENTS override ---- */
.fg-main .comments-section {
    background: var(--bg-surface);
    border: none;
}
.fg-main .comments-section .detail-section-title .icon {
    color: var(--mainsite-primary);
}
.fg-main .comments-count {
    color: var(--mainsite-primary);
    background: var(--mainsite-very-light, #FEF2F2);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 960px) {
    .fg-layout {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    .fg-sidebar-sticky {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
    }
    .fg-actions-card {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--space-1-5);
    }
    .fg-action-btn {
        flex: 0 0 auto;
        width: auto;
    }
    .fg-download-card,
    .fg-submitted-by {
        flex: 1;
        min-width: 200px;
    }
}

@media (max-width: 768px) {
    .fg-hero { padding: var(--space-4) var(--space-4) var(--space-8); }
    .fg-hero h1 { font-size: clamp(1.5rem, 6vw, 2rem); }
    .fg-hero-overview { font-size: var(--text-body); }
    .fg-stats {
        flex-direction: column;
        max-width: none;
    }
    .fg-stat {
        border-right: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        padding: var(--space-2-5) var(--space-4);
    }
    .fg-stat:last-child { border-bottom: none; }
    .fg-layout { padding: 0 var(--space-4) var(--space-8); }
    .fg-use-split { grid-template-columns: 1fr; }
    .fg-related { padding: var(--space-6) var(--space-4); }
    .fg-related-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .fg-hero h1 { font-size: 1.5rem; }
    .fg-section-body { padding: var(--space-4); }
    .fg-sidebar-sticky { flex-direction: column; }
    .fg-actions-card { flex-direction: column; }
    .fg-action-btn { width: 100%; }
}

/* ---- PRINT ---- */
@media print {
    .fg-sidebar,
    .fg-related,
    .fg-breadcrumb,
    .comments-section { display: none; }
    .fg-layout { grid-template-columns: 1fr; }
    .fg-section-body { border: none; box-shadow: none; }
    body.fieldguide-page::before { display: none; }
}