/* =========================================================
   SEO BODY SECTIONS — how-to / features / FAQ / related / custom
   Frontend Design Ecosystem

   Markup: templates/seo-sections.php + templates/sections/*.php
   Styles: this file. Extracted from components/tool-shell.css, where these
   rules had no dependency on the tool shell at all — they are the body
   sections rendered BENEATH a workspace, and the template pages need them
   without needing the shell.

   Load it from $pageCss on any page that calls render_seo_sections() or one
   of the render_seo_* partials. It is NOT imported by main.css: only tool and
   template pages use these sections.
   ========================================================= */

.tool-seo-sections {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: var(--space-12) var(--space-6) var(--space-24);
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
    background: var(--bg-primary);
}

.tool-seo-section { min-width: 0; }

.tool-seo-heading {
    font-family: var(--font-primary);
    font-size: var(--text-3xl);
    font-weight: var(--font-extra-bold);
    line-height: var(--leading-tight);
    color: var(--text-primary);
    margin: 0 0 var(--space-3);
    letter-spacing: -0.02em;
}

.tool-seo-intro {
    font-size: var(--text-md);
    line-height: var(--leading-relaxed);
    color: var(--text-muted);
    margin: 0 0 var(--space-6);
    max-width: 60ch;
}

/* Centered section headers for FAQ / Related (How-to uses a 2-col left header) */
.tool-seo-faq .tool-seo-heading,
.tool-seo-related .tool-seo-heading {
    text-align: center;
}

.tool-seo-faq .tool-seo-intro,
.tool-seo-related .tool-seo-intro {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

/* ── How to use — 2-column (sticky header + vertical numbered timeline) ── */
.tool-seo-howto-layout {
    display: grid;
    grid-template-columns: minmax(240px, 320px) 1fr;
    gap: var(--space-12);
    align-items: start;
}

.tool-seo-howto-header {
    position: sticky;
    top: var(--space-8);
}

.tool-seo-howto-header .tool-seo-heading { margin-bottom: var(--space-3); }
.tool-seo-howto-header .tool-seo-intro { margin-bottom: 0; }

.tool-seo-timeline {
    list-style: none;
    margin: 0;
    padding: 0;
}

.tool-seo-tl-step {
    position: relative;
    display: grid;
    grid-template-columns: 1.75rem 1fr;
    gap: var(--space-4);
    padding-bottom: var(--space-8);
}

.tool-seo-tl-step:last-child { padding-bottom: 0; }

/* connector line running through the node centers */
.tool-seo-tl-step::before {
    content: "";
    position: absolute;
    left: calc(1.75rem / 2 - 1px);
    top: 1.75rem;
    bottom: 0;
    width: 2px;
    background: var(--border-primary);
}

.tool-seo-tl-step:last-child::before { display: none; }

.tool-seo-tl-node {
    position: relative;
    z-index: 1;
    width: 1.75rem;
    height: 1.75rem;
    display: grid;
    place-items: center;
    border-radius: 50%;
    background: var(--color-primary);
    color: #ffffff;
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
}

.tool-seo-tl-body { padding-top: 0.1rem; }

.tool-seo-tl-title {
    font-family: var(--font-primary);
    font-size: var(--text-md);
    font-weight: var(--font-semi-bold);
    color: var(--text-primary);
    margin: 0 0 var(--space-1);
}

.tool-seo-tl-text {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-muted);
    margin: 0;
}

@media (max-width: 768px) {
    .tool-seo-howto-layout {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    .tool-seo-howto-header { position: static; }
}

/* ── FAQ — native <details> accordions ── */
.tool-seo-faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.tool-seo-faq-item {
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 0.75rem;
    overflow: hidden;
}

.tool-seo-faq-item[open] {
    border-color: var(--color-primary);
}

.tool-seo-faq-q {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    cursor: pointer;
    list-style: none;
    font-size: var(--text-md);
    font-weight: var(--font-semi-bold);
    color: var(--text-primary);
    transition: background var(--transition-fast);
}

.tool-seo-faq-q::-webkit-details-marker { display: none; }
.tool-seo-faq-q:hover { background: var(--surface-hover); }

.tool-seo-faq-icon {
    flex: 0 0 auto;
    position: relative;
    width: 0.875rem;
    height: 0.875rem;
}

.tool-seo-faq-icon::before,
.tool-seo-faq-icon::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--text-muted);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.tool-seo-faq-icon::before { width: 0.875rem; height: 2px; }
.tool-seo-faq-icon::after  { width: 2px; height: 0.875rem; }

.tool-seo-faq-item[open] .tool-seo-faq-icon::after { transform: translate(-50%, -50%) scaleY(0); opacity: 0; }
.tool-seo-faq-item[open] .tool-seo-faq-icon::before { background: var(--color-primary); }

.tool-seo-faq-a {
    padding: 0 var(--space-5) var(--space-5);
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
    color: var(--text-secondary);
}

.tool-seo-faq-a a { color: var(--color-primary); }

/* ── Related tools — cross-link cards ── */
.tool-seo-related-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
}

.tool-seo-related-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1 1 240px;
    max-width: 320px;
    gap: var(--space-1);
    padding: var(--space-5);
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 0.75rem;
    text-decoration: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.tool-seo-related-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.tool-seo-related-name {
    font-size: var(--text-md);
    font-weight: var(--font-semi-bold);
    color: var(--text-primary);
}

.tool-seo-related-desc {
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    color: var(--text-muted);
}

.tool-seo-related-arrow {
    color: var(--color-primary);
    font-size: var(--text-lg);
    line-height: 1;
    margin-top: var(--space-1);
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.tool-seo-related-card:hover .tool-seo-related-arrow {
    opacity: 1;
    transform: translateY(0);
}

/* ── "Why use" features — badge + 3-col card grid + highlight callout ── */
.tool-seo-features-header {
    text-align: center;
    max-width: 60ch;
    margin: 0 auto var(--space-8);
}

.tool-seo-badge {
    display: inline-block;
    margin-bottom: var(--space-4);
    padding: var(--space-1) var(--space-3);
    border-radius: 9999px;
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.tool-seo-features-header .tool-seo-heading { margin-bottom: var(--space-3); }
.tool-seo-features-header .tool-seo-intro { margin: 0 auto; }

.tool-seo-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.tool-seo-feature-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-6);
    background: var(--surface-primary);
    border: 1px solid var(--border-subtle);
    border-radius: 0.875rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.tool-seo-feature-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.tool-seo-feature-icon {
    display: grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.625rem;
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.tool-seo-feature-title {
    font-family: var(--font-primary);
    font-size: var(--text-md);
    font-weight: var(--font-semi-bold);
    color: var(--text-primary);
    margin: 0;
}

.tool-seo-feature-desc {
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
    color: var(--text-muted);
    margin: 0;
}

.tool-seo-feature-highlight {
    margin-top: var(--space-6);
    padding: var(--space-8);
    border-radius: 0.875rem;
    background: var(--color-primary);
    text-align: center;
}

.tool-seo-feature-highlight p {
    max-width: 70ch;
    margin: 0 auto;
    color: #ffffff;
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    line-height: var(--leading-normal);
}

@media (max-width: 900px) {
    .tool-seo-features-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .tool-seo-features-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .tool-seo-sections {
        padding: var(--space-10) var(--space-4) var(--space-16);
        gap: var(--space-12);
    }
    .tool-seo-heading { font-size: var(--text-2xl); }
    .tool-seo-feature-highlight p { font-size: var(--text-lg); }
}

@media (max-width: 360px) {
    .tool-seo-sections {
        padding-left: var(--space-3);
        padding-right: var(--space-3);
    }
}