/* ── Reset & base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --green-900: #04342C;
    --green-800: #085041;
    --green-700: #0F6E56;
    --green-500: #1D9E75;
    --green-400: #5DCAA5;
    --green-200: #9FE1CB;
    --green-100: #E1F5EE;
    --amber-100: #FAEEDA;
    --amber-700: #854F0B;
    --amber-800: #633806;
    --amber-600: #BA7517;
    --purple-100: #EEEDFE;
    --purple-700: #534AB7;
    --blue-100:  #E6F1FB;
    --blue-700:  #185FA5;
    --text-primary: #111;
    --text-secondary: #555;
    --text-muted: #888;
    --border: #e0e0e0;
    --bg-page: #f7f7f5;
    --bg-surface: #fff;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.7;
}

a { color: var(--green-700); text-decoration: none; }
a:hover { color: var(--green-500); }
img { max-width: 100%; height: auto; display: block; }

/* ── Buttons ──────────────────────────────────────────── */
.btn-primary {
    display: inline-block;
    background: var(--green-700);
    color: #fff;
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    transition: background 0.15s;
    border: none;
    cursor: pointer;
}
.btn-primary:hover { background: var(--green-500); color: #fff; }

.btn-outline {
    display: inline-block;
    background: transparent;
    color: var(--green-700);
    padding: 10px 22px;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 500;
    border: 1.5px solid var(--green-700);
    transition: all 0.15s;
}
.btn-outline:hover { background: var(--green-100); }

.btn-teal {
    display: block;
    background: var(--green-500);
    color: #fff;
    padding: 9px 16px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    border: none;
    cursor: pointer;
    text-align: center;
    transition: background 0.15s;
}
.btn-teal:hover { background: var(--green-700); color: #fff; }
.btn-block { width: 100%; display: block; text-align: center; }

/* ── Badges ───────────────────────────────────────────── */
.badge {
    display: inline-block;
    font-size: 12px;
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    text-decoration: none;
}
.badge--energy { background: var(--green-100); color: var(--green-800); }
.badge--ai     { background: var(--purple-100); color: var(--purple-700); }
.badge--texas  { background: var(--amber-100); color: var(--amber-800); }

/* ── Header ───────────────────────────────────────────── */
.site-header {
    background: var(--green-900);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--green-800);
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.site-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    flex-shrink: 0;
}
.logo-text {
    font-size: 18px;
    font-weight: 500;
    color: #fff;
}
.site-nav { display: flex; align-items: center; gap: 4px; }
.nav-list {
    display: flex;
    list-style: none;
    gap: 4px;
    margin: 0;
    padding: 0;
}
.nav-list li a, .nav-list > li > a {
    display: block;
    padding: 6px 12px;
    font-size: 14px;
    color: var(--green-200);
    border-radius: var(--radius-sm);
    transition: background 0.12s;
}
.nav-list li a:hover { background: var(--green-800); color: #fff; }
.nav-cta {
    margin-left: 8px;
    background: var(--green-500);
    color: #fff !important;
    padding: 7px 14px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    transition: background 0.15s;
}
.nav-cta:hover { background: var(--green-700); color: #fff; }

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all 0.2s;
}

/* ── Breadcrumb ───────────────────────────────────────── */
.breadcrumb {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
}
.breadcrumb-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 8px 24px;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}
.breadcrumb-inner a { color: var(--text-muted); }
.breadcrumb-inner a:hover { color: var(--green-700); }
.breadcrumb-inner span[aria-current] { color: var(--text-primary); }
.breadcrumb-sep { color: var(--border); }

/* ── Article layout ───────────────────────────────────── */
.article-layout { max-width: 1200px; margin: 0 auto; }

.article-header {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 32px;
    padding: 36px 24px 28px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}
.article-header-inner { min-width: 0; }
.article-meta-top { display: flex; gap: 8px; margin-bottom: 14px; flex-wrap: wrap; }
.article-title {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: clamp(24px, 3vw, 32px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 12px;
    color: var(--text-primary);
}
.article-deck {
    font-size: 17px;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}
.article-byline {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
    flex-wrap: wrap;
}
.byline-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--green-100);
    color: var(--green-700);
    font-size: 11px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.byline-sep { color: var(--border); }
.byline-updated { color: var(--text-muted); }

/* Stats panel */
.stats-panel {
    background: var(--green-900);
    border-radius: var(--radius-lg);
    padding: 20px;
    align-self: start;
}
.stats-panel-label {
    font-size: 12px;
    color: var(--green-400);
    font-weight: 500;
    margin-bottom: 14px;
    text-transform: none;
}
.stats-panel-rows { display: flex; flex-direction: column; gap: 0; }
.stats-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--green-800);
    font-size: 13px;
}
.stats-row--last { border-bottom: none; }
.stats-row span { color: var(--green-200); }
.stats-row strong { color: #fff; font-size: 18px; font-weight: 500; }
.stats-cta {
    display: block;
    background: var(--green-500);
    color: #fff;
    text-align: center;
    padding: 10px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 500;
    margin-top: 16px;
    transition: background 0.15s;
}
.stats-cta:hover { background: var(--green-700); color: #fff; }

/* Article hero image */
.article-hero { background: var(--green-100); }
.article-hero-img { width: 100%; height: 320px; object-fit: cover; }

/* Article body two-column */
.article-body {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    padding: 32px 24px;
    align-items: start;
    background: var(--bg-surface);
}

/* Article content typography */
.article-content h2 {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 22px;
    font-weight: 700;
    margin: 32px 0 12px;
    color: var(--text-primary);
    line-height: 1.3;
}
.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 24px 0 10px;
    color: var(--text-primary);
}
.article-content p { margin-bottom: 18px; font-size: 16px; line-height: 1.75; }
.article-content ul, .article-content ol {
    margin: 0 0 18px 24px;
    font-size: 16px;
    line-height: 1.75;
}
.article-content li { margin-bottom: 6px; }
.article-content strong { font-weight: 600; color: var(--text-primary); }
.article-content a { color: var(--green-700); text-decoration: underline; text-underline-offset: 2px; }
.article-content a:hover { color: var(--green-500); }

/* Tip callout — editors inject via shortcode or HTML block */
.article-content .tip-callout,
.wp-block-tip {
    background: var(--amber-100);
    border-left: 3px solid var(--amber-600);
    padding: 14px 18px;
    margin: 24px 0;
    border-radius: 0;
}
.tip-callout-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--amber-800);
    margin-bottom: 4px;
}
.tip-callout p { color: var(--amber-700); margin: 0; font-size: 14px; }

/* Comparison cards — editors inject via HTML block */
.comparison-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 28px 0;
}
.comparison-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
}
.comparison-card--best {
    border: 2px solid var(--green-500);
    position: relative;
}
.comparison-card__badge {
    position: absolute;
    top: -10px;
    left: 16px;
    background: var(--green-500);
    color: #fff;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 100px;
    font-weight: 500;
}
.comparison-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}
.comparison-card__icon--blue { background: var(--blue-100); color: var(--blue-700); }
.comparison-card__icon--green { background: var(--green-100); color: var(--green-700); }
.comparison-card__name { font-size: 15px; font-weight: 600; margin-bottom: 2px; }
.comparison-card__price { font-size: 24px; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
.comparison-card__desc { font-size: 13px; color: var(--text-secondary); margin-bottom: 14px; line-height: 1.5; }
.comparison-card .btn-primary,
.comparison-card .btn-outline { display: block; text-align: center; width: 100%; padding: 8px; font-size: 13px; }

/* Stat block inline */
.stat-block {
    background: var(--bg-page);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 24px 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    border: 1px solid var(--border);
}
.stat-block__item { text-align: center; }
.stat-block__label { font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.stat-block__value { font-size: 26px; font-weight: 600; color: var(--text-primary); }

/* Affiliate disclaimer */
.affiliate-disclaimer {
    background: var(--bg-page);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-top: 40px;
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
}
.affiliate-disclaimer strong { color: var(--text-secondary); }
.affiliate-disclaimer a { color: var(--green-700); }

/* ── Sidebar ──────────────────────────────────────────── */
.article-sidebar {
    position: sticky;
    top: 72px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.sidebar-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}
.sidebar-toc {
    background: var(--bg-page);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
}
#toc-nav { display: flex; flex-direction: column; gap: 6px; }
#toc-nav a {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 3px 0 3px 10px;
    border-left: 2px solid var(--border);
    transition: all 0.12s;
    text-decoration: none;
}
#toc-nav a:hover { color: var(--green-700); border-left-color: var(--green-500); }
#toc-nav a.active { color: var(--green-700); border-left-color: var(--green-500); font-weight: 500; }

.sidebar-top-pick {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
}
.top-pick-img-placeholder {
    width: 100%;
    height: 80px;
    background: var(--green-100);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}
.top-pick-name { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.top-pick-desc { font-size: 13px; color: var(--text-secondary); margin-bottom: 12px; line-height: 1.5; }

.sidebar-newsletter {
    background: var(--green-900);
    border-radius: var(--radius-lg);
    padding: 18px;
}
.sidebar-newsletter-title { font-size: 14px; font-weight: 500; color: var(--green-400); margin-bottom: 6px; }
.sidebar-newsletter-desc { font-size: 13px; color: var(--green-200); margin-bottom: 12px; line-height: 1.5; }
.sidebar-newsletter input[type="email"] {
    width: 100%;
    padding: 9px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--green-800);
    background: var(--green-800);
    color: #fff;
    font-size: 13px;
    margin-bottom: 8px;
    outline: none;
}
.sidebar-newsletter input::placeholder { color: var(--green-400); }
.sidebar-newsletter input:focus { border-color: var(--green-500); }

/* ── Related posts ────────────────────────────────────── */
.related-posts {
    background: var(--bg-page);
    border-top: 1px solid var(--border);
    padding: 28px 24px;
}
.related-posts-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    max-width: 1200px;
}
.related-card {
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
    display: block;
    text-decoration: none;
    transition: box-shadow 0.15s;
}
.related-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.related-card-img { width: 100%; height: 80px; object-fit: cover; }
.related-card-img-placeholder {
    height: 80px;
    background: var(--green-100);
}
.related-card-body { padding: 12px; }
.related-card-title { font-size: 13px; font-weight: 500; color: var(--text-primary); margin-top: 6px; line-height: 1.4; }

/* ── Homepage ─────────────────────────────────────────── */
.homepage-hero {
    background: var(--green-100);
    border-bottom: 1px solid var(--border);
    padding: 48px 24px;
}
.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 48px;
    align-items: center;
}
.hero-eyebrow {
    display: inline-block;
    background: var(--green-900);
    color: var(--green-400);
    font-size: 12px;
    padding: 4px 12px;
    border-radius: 100px;
    margin-bottom: 16px;
}
.hero-title {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: clamp(28px, 3.5vw, 42px);
    font-weight: 700;
    line-height: 1.15;
    color: var(--green-900);
    margin-bottom: 14px;
}
.hero-desc { font-size: 17px; color: var(--green-700); margin-bottom: 24px; line-height: 1.6; max-width: 500px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-stats {
    background: var(--green-900);
    border-radius: var(--radius-lg);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.hero-stat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid var(--green-800);
}
.hero-stat:last-child { border-bottom: none; }
.hero-stat strong { font-size: 28px; font-weight: 600; color: #fff; }
.hero-stat span { font-size: 13px; color: var(--green-200); max-width: 160px; text-align: right; }

.pillar-section { padding: 36px 24px; }
.pillar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.pillar-card {
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
}
.pillar-card--energy .pillar-icon { color: var(--green-700); }
.pillar-card--ai .pillar-icon { color: var(--purple-700); }
.pillar-icon { margin-bottom: 14px; }
.pillar-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.pillar-desc { font-size: 15px; color: var(--text-secondary); margin-bottom: 16px; line-height: 1.6; }
.pillar-link { font-size: 14px; color: var(--green-700); font-weight: 500; }
.pillar-link:hover { color: var(--green-500); }

.latest-posts { padding: 0 24px 48px; }
.latest-inner { max-width: 1200px; margin: 0 auto; }
.section-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
    padding-top: 28px;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}
.post-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: box-shadow 0.15s;
}
.post-card:hover { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.post-card-link { display: block; text-decoration: none; color: inherit; }
.post-card-img { width: 100%; height: 160px; object-fit: cover; }
.post-card-img--placeholder {
    height: 160px;
    background: var(--green-100);
}
.post-card-body { padding: 18px; }
.post-card-title { font-size: 16px; font-weight: 600; margin: 8px 0 8px; line-height: 1.4; color: var(--text-primary); }
.post-card-excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.5; margin-bottom: 12px; }
.post-card-meta { font-size: 12px; color: var(--text-muted); }

/* ── Archive ──────────────────────────────────────────── */
.archive-layout { max-width: 1200px; margin: 0 auto; padding: 36px 24px; }
.archive-inner { }
.archive-header { margin-bottom: 28px; }
.archive-title { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.archive-desc { color: var(--text-secondary); font-size: 16px; }

/* ── Footer ───────────────────────────────────────────── */
.site-footer { background: var(--green-900); margin-top: 48px; }
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 28px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 12px;
}
.footer-tagline { font-size: 13px; color: var(--green-400); line-height: 1.6; max-width: 260px; }
.footer-col-title { font-size: 13px; font-weight: 600; color: var(--green-200); margin-bottom: 12px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col ul li a { font-size: 13px; color: var(--green-400); text-decoration: none; }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom {
    border-top: 1px solid var(--green-800);
    padding: 16px 24px;
    text-align: center;
}
.footer-bottom p { font-size: 12px; color: var(--green-400); }
.footer-bottom a { color: var(--green-400); text-decoration: underline; }

/* ── Responsive ───────────────────────────────────────── */
@media (max-width: 900px) {
    .article-header,
    .article-body { grid-template-columns: 1fr; }
    .stats-panel { order: -1; }
    .article-sidebar { position: static; }
    .hero-inner,
    .pillar-inner { grid-template-columns: 1fr; }
    .hero-stats { display: none; }
    .posts-grid,
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .stat-block { grid-template-columns: 1fr; }
    .comparison-cards { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
    .site-nav { display: none; }
    .site-nav.is-open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--green-900);
        padding: 16px 24px;
        border-bottom: 1px solid var(--green-800);
        z-index: 99;
    }
    .site-nav.is-open .nav-list { flex-direction: column; }
    .menu-toggle { display: flex; }
    .posts-grid,
    .related-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .article-header { padding: 24px 16px 20px; }
    .article-body { padding: 24px 16px; gap: 24px; }
    .related-posts { padding: 24px 16px; }
    .homepage-hero { padding: 32px 16px; }
}

/* ── Accessibility ────────────────────────────────────── */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
}
*:focus-visible { outline: 2px solid var(--green-500); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }

/* ── Static pages ─────────────────────────────────────── */
.page-layout { max-width: 1200px; margin: 0 auto; padding: 40px 24px; }
.page-inner { max-width: 780px; }
.page-title {
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}