/* ────────────────────────────────────────────
   InstallPlan SEO pages — Light clean theme
   ──────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --ip-bg: #ffffff;
    --ip-bg-soft: #f8f9fb;
    --ip-bg-muted: #f1f3f6;
    --ip-surface: #ffffff;
    --ip-border: #e5e7eb;
    --ip-border-soft: #f0f1f3;
    --ip-text: #111827;
    --ip-text-secondary: #4b5563;
    --ip-text-muted: #9ca3af;
    --ip-accent: #6c3cff;
    --ip-accent-soft: rgba(108, 60, 255, 0.08);
    --ip-accent-hover: #5a2de0;
    --ip-green: #10b981;
    --ip-green-soft: rgba(16, 185, 129, 0.08);
    --ip-shell: 760px;
    --ip-shell-wide: 1120px;
    --ip-radius: 12px;
    --ip-radius-lg: 16px;
    --ip-shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --ip-shadow: 0 4px 16px rgba(0,0,0,0.06);
    --ip-shadow-lg: 0 8px 32px rgba(0,0,0,0.08);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.seo-body {
    margin: 0;
    background: var(--ip-bg);
    color: var(--ip-text);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.7;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
}

/* ── Shell ── */
.seo-shell {
    width: min(calc(100% - 40px), var(--ip-shell-wide));
    margin: 0 auto;
}

.seo-shell--narrow {
    width: min(calc(100% - 40px), var(--ip-shell));
}

.seo-section .seo-shell--narrow {
    width: 80%;
}

/* ── Header ── */
.seo-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--ip-border);
}

.seo-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    height: 64px;
}

.seo-brand {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--ip-text);
}

.seo-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

.seo-nav__link {
    font-size: 15px;
    font-weight: 500;
    color: var(--ip-text-secondary);
    transition: color 0.15s;
}

.seo-nav__link:hover,
.seo-nav__link.is-active {
    color: var(--ip-text);
}

.seo-header__actions {
    display: flex;
    gap: 10px;
}

/* ── Buttons ── */
.seo-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 20px;
    border-radius: 10px;
    border: none;
    background: var(--ip-accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    white-space: nowrap;
}

.seo-btn:hover {
    background: var(--ip-accent-hover);
    transform: translateY(-1px);
}

.seo-btn--ghost {
    background: transparent;
    color: var(--ip-text);
    border: 1px solid var(--ip-border);
}

.seo-btn--ghost:hover {
    background: var(--ip-bg-soft);
    border-color: #d1d5db;
    transform: translateY(-1px);
}

.seo-btn--lg {
    height: 48px;
    padding: 0 28px;
    font-size: 15px;
    border-radius: 12px;
}

.seo-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.seo-actions--stack {
    flex-direction: column;
    align-items: flex-start;
}

/* ── Breadcrumbs ── */
.seo-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--ip-text-muted);
}

.seo-breadcrumbs__link {
    color: var(--ip-text-secondary);
    transition: color 0.15s;
}

.seo-breadcrumbs__link:hover {
    color: var(--ip-accent);
}

.seo-breadcrumbs__link::after {
    content: "\203A";
    margin-left: 6px;
    color: var(--ip-text-muted);
}

/* ── Eyebrow badge ── */
.seo-eyebrow {
    display: inline-flex;
    padding: 5px 14px;
    border-radius: 999px;
    background: var(--ip-accent-soft);
    color: var(--ip-accent);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    margin-bottom: 16px;
}

/* ── Hero ── */
.seo-hero {
    padding: 48px 0 40px;
    border-bottom: 1px solid var(--ip-border-soft);
}

.seo-hero--compact {
    padding-bottom: 32px;
}

.seo-hero__grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 48px;
    align-items: start;
}

.seo-title {
    margin: 0 0 20px;
    font-size: clamp(32px, 4.5vw, 48px);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--ip-text);
}

.seo-lead {
    margin: 0 0 24px;
    max-width: 660px;
    font-size: clamp(17px, 1.8vw, 19px);
    line-height: 1.65;
    color: var(--ip-text-secondary);
}

/* ── Hero points ── */
.seo-points {
    margin: 0 0 28px;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 10px;
}

.seo-points li {
    position: relative;
    padding-left: 22px;
    font-size: 15px;
    color: var(--ip-text-secondary);
    line-height: 1.55;
}

.seo-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--ip-accent);
    opacity: 0.5;
}

/* ── Aside card (solution pages) ── */
.seo-aside-card {
    padding: 28px;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-bg-soft);
}

.seo-aside-card__label {
    margin: 0 0 10px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ip-accent);
}

.seo-aside-card__text {
    margin: 0 0 18px;
    font-size: 14px;
    color: var(--ip-text-secondary);
    line-height: 1.6;
}

.seo-mini-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.seo-mini-actions__link {
    font-size: 14px;
    font-weight: 600;
    color: var(--ip-accent);
    transition: color 0.15s;
}

.seo-mini-actions__link:hover {
    color: var(--ip-accent-hover);
}

/* ── Article meta ── */
.seo-article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    font-size: 14px;
    color: var(--ip-text-muted);
}

.seo-article-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ── Stats cards ── */
.seo-stats {
    padding: 32px 0;
}

.seo-card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.seo-card-grid--stats {
    grid-template-columns: repeat(3, 1fr);
}

.seo-card,
.seo-card--stat {
    padding: 24px;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-surface);
    transition: box-shadow 0.2s, border-color 0.2s;
}

.seo-card:hover {
    box-shadow: var(--ip-shadow);
    border-color: #d1d5db;
}

.seo-card--stat .seo-card__title {
    margin: 0 0 12px;
    font-size: 15px;
    font-weight: 700;
    color: var(--ip-text);
}

.seo-card__compare {
    display: grid;
    gap: 6px;
}

.seo-card__compare span {
    font-size: 14px;
    color: var(--ip-text-muted);
    text-decoration: line-through;
    text-decoration-color: rgba(156, 163, 175, 0.4);
}

.seo-card__compare strong {
    font-size: 18px;
    font-weight: 700;
    color: var(--ip-green);
}

.seo-card__eyebrow {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 6px;
    background: var(--ip-accent-soft);
    color: var(--ip-accent);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 12px;
}

.seo-card h3 {
    margin: 0 0 10px;
    font-size: 18px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ip-text);
}

.seo-card p {
    margin: 0;
    font-size: 14px;
    color: var(--ip-text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.seo-card__meta {
    display: flex;
    gap: 12px;
    margin-top: 14px;
    font-size: 13px;
    color: var(--ip-text-muted);
}

.seo-card__link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: 16px;
    font-size: 14px;
    font-weight: 600;
    color: var(--ip-accent);
    transition: gap 0.15s;
}

.seo-card__link::after {
    content: "\2192";
}

.seo-card__link:hover {
    gap: 8px;
}

/* ── Sections ── */
.seo-section {
    padding: 48px 0;
}

.seo-section--alt {
    background: var(--ip-bg-soft);
}

.seo-section--divider {
    border-top: 1px solid var(--ip-border-soft);
}

.seo-section__heading {
    margin-bottom: 28px;
}

.seo-section__heading h2 {
    margin: 0 0 8px;
    font-size: clamp(24px, 2.8vw, 32px);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--ip-text);
}

.seo-section__heading p {
    margin: 0;
    max-width: 600px;
    font-size: 15px;
    color: var(--ip-text-secondary);
}

/* ── Content blocks (article body) ── */
.seo-content {
    display: grid;
    gap: 0;
    max-width: var(--ip-shell);
    margin: 0 auto;
}

.seo-content__block {
    padding: 32px 0;
    border-bottom: 1px solid var(--ip-border-soft);
}

.seo-content__block:last-child {
    border-bottom: none;
}

.seo-content__block h2 {
    margin: 0 0 16px;
    font-size: clamp(22px, 2.5vw, 28px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.01em;
    color: var(--ip-text);
}

.seo-content__block p {
    margin: 0 0 14px;
    font-size: 16px;
    line-height: 1.75;
    color: var(--ip-text-secondary);
}

.seo-content__block p:last-child {
    margin-bottom: 0;
}

.seo-content__block ul {
    margin: 16px 0 0;
    padding-left: 0;
    list-style: none;
    display: grid;
    gap: 8px;
}

.seo-content__block li {
    position: relative;
    padding-left: 20px;
    font-size: 15px;
    line-height: 1.6;
    color: var(--ip-text-secondary);
}

.seo-content__block li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--ip-accent);
    opacity: 0.4;
}

/* ── Image grid ── */
.seo-image-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.seo-image-card {
    overflow: hidden;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-surface);
    transition: box-shadow 0.2s;
}

.seo-image-card:hover {
    box-shadow: var(--ip-shadow);
}

.seo-image-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-bottom: 1px solid var(--ip-border-soft);
}

.seo-image-card figcaption {
    padding: 14px 16px 18px;
    display: grid;
    gap: 4px;
}

.seo-image-card strong {
    font-size: 14px;
    font-weight: 600;
    color: var(--ip-text);
}

.seo-image-card span {
    font-size: 13px;
    color: var(--ip-text-muted);
    line-height: 1.5;
}

/* ── CTA block ── */
.seo-cta {
    padding: 40px;
    border-radius: var(--ip-radius-lg);
    background: var(--ip-bg-soft);
    border: 1px solid var(--ip-border);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 32px;
    align-items: center;
}

.seo-cta h2 {
    margin: 0 0 10px;
    font-size: clamp(22px, 2.5vw, 28px);
    font-weight: 700;
    line-height: 1.2;
    color: var(--ip-text);
}

.seo-cta p {
    margin: 0;
    font-size: 15px;
    color: var(--ip-text-secondary);
    max-width: 520px;
}

/* ── FAQ ── */
.seo-faq-list {
    display: grid;
    gap: 12px;
    max-width: var(--ip-shell);
    margin: 0 auto;
}

.seo-faq-item {
    padding: 24px 28px;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-surface);
    transition: box-shadow 0.2s;
}

.seo-faq-item:hover {
    box-shadow: var(--ip-shadow-sm);
}

.seo-faq-item h2,
.seo-faq-item h3 {
    margin: 0 0 8px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.35;
    color: var(--ip-text);
}

.seo-faq-item p {
    margin: 0;
    font-size: 15px;
    color: var(--ip-text-secondary);
    line-height: 1.65;
}

/* ── Glossary ── */
.seo-glossary {
    display: grid;
    gap: 12px;
    max-width: var(--ip-shell);
    margin: 0 auto;
}

.seo-glossary__item {
    padding: 28px;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-surface);
}

.seo-glossary__item h2 {
    margin: 0 0 8px;
    font-size: 22px;
    font-weight: 700;
    color: var(--ip-text);
}

.seo-glossary__short {
    font-size: 16px;
    font-weight: 500;
    color: var(--ip-text);
    margin-bottom: 12px;
}

.seo-glossary__item p {
    margin: 0 0 8px;
    font-size: 15px;
    color: var(--ip-text-secondary);
    line-height: 1.65;
}

.seo-glossary__item p:last-child {
    margin-bottom: 0;
}

/* ── Footer ── */
.seo-footer {
    padding: 48px 0 64px;
    border-top: 1px solid var(--ip-border);
    background: var(--ip-bg-soft);
}

.seo-footer__grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
}

.seo-footer__title {
    margin: 0 0 14px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ip-text-muted);
}

.seo-footer__text {
    margin: 0;
    font-size: 14px;
    color: var(--ip-text-secondary);
    line-height: 1.6;
}

.seo-footer__links {
    display: grid;
    gap: 8px;
}

.seo-footer__link {
    font-size: 14px;
    color: var(--ip-text-secondary);
    transition: color 0.15s;
}

.seo-footer__link:hover {
    color: var(--ip-accent);
}

/* ── Blog index: featured article ── */
.seo-featured {
    padding: 32px;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-surface);
    margin-bottom: 32px;
    transition: box-shadow 0.2s;
}

.seo-featured:hover {
    box-shadow: var(--ip-shadow);
}

.seo-featured__eyebrow {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 6px;
    background: var(--ip-accent-soft);
    color: var(--ip-accent);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 12px;
}

.seo-featured__meta {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 13px;
    color: var(--ip-text-muted);
}

.seo-featured h2 {
    margin: 0 0 10px;
    font-size: 24px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--ip-accent);
}

.seo-featured h2 a {
    color: inherit;
    transition: color 0.15s;
}

.seo-featured h2 a:hover {
    color: var(--ip-accent-hover);
}

.seo-featured p {
    margin: 0 0 16px;
    font-size: 15px;
    color: var(--ip-text-secondary);
    line-height: 1.6;
    max-width: 640px;
}

.seo-featured__link {
    font-size: 14px;
    font-weight: 600;
    color: var(--ip-accent);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: gap 0.15s;
}

.seo-featured__link::after {
    content: "\2192";
}

.seo-featured__link:hover {
    gap: 10px;
}

/* ── Blog article card (compact) ── */
.seo-article-card {
    padding: 24px;
    border: 1px solid var(--ip-border);
    border-radius: var(--ip-radius-lg);
    background: var(--ip-surface);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, border-color 0.2s;
}

.seo-article-card:hover {
    box-shadow: var(--ip-shadow);
    border-color: #d1d5db;
}

.seo-article-card__top {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.seo-article-card__badge {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 6px;
    background: var(--ip-accent-soft);
    color: var(--ip-accent);
    font-size: 12px;
    font-weight: 600;
}

.seo-article-card__time {
    font-size: 13px;
    color: var(--ip-text-muted);
}

.seo-article-card h3 {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ip-text);
}

.seo-article-card p {
    margin: 0;
    font-size: 14px;
    color: var(--ip-text-secondary);
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.seo-article-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--ip-border-soft);
}

.seo-article-card__date {
    font-size: 13px;
    color: var(--ip-text-muted);
}

.seo-article-card__read {
    font-size: 14px;
    font-weight: 600;
    color: var(--ip-accent);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: gap 0.15s;
}

.seo-article-card__read::after {
    content: "\2192";
}

.seo-article-card__read:hover {
    gap: 8px;
}

/* ── Blog post: back link ── */
.seo-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--ip-text-secondary);
    margin-bottom: 24px;
    transition: color 0.15s;
}

.seo-back::before {
    content: "\2190";
}

.seo-back:hover {
    color: var(--ip-accent);
}

/* ── Clickable card wrapper ── */
.seo-card--link {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.seo-card--link:hover .seo-card__link {
    gap: 8px;
}

/* ── Image card cursor ── */
.seo-image-card {
    cursor: pointer;
}

/* ── Lightbox ── */
.seo-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s, visibility 0.25s;
    padding: 24px;
}

.seo-lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

.seo-lightbox__close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    color: #fff;
    font-size: 36px;
    line-height: 1;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.15s;
    z-index: 1;
}

.seo-lightbox__close:hover {
    opacity: 1;
}

.seo-lightbox__img {
    max-width: 90vw;
    max-height: 80vh;
    border-radius: 12px;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.4);
    object-fit: contain;
}

.seo-lightbox__caption {
    margin: 16px 0 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    text-align: center;
    max-width: 600px;
}

/* ── Featured card as link ── */
a.seo-featured {
    display: block;
    text-decoration: none;
    color: inherit;
}

a.seo-article-card {
    text-decoration: none;
    color: inherit;
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .seo-hero__grid {
        grid-template-columns: 1fr;
    }

    .seo-aside-card {
        max-width: 480px;
    }

    .seo-cta {
        grid-template-columns: 1fr;
    }

    .seo-footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .seo-card-grid,
    .seo-card-grid--stats,
    .seo-image-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .seo-header__inner {
        gap: 16px;
    }

    .seo-nav {
        display: none;
    }

    .seo-hero {
        padding: 32px 0 28px;
    }

    .seo-title {
        font-size: 28px;
    }

    .seo-card-grid,
    .seo-card-grid--stats,
    .seo-image-grid {
        grid-template-columns: 1fr;
    }

    .seo-cta {
        padding: 28px;
    }

    .seo-footer__grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .seo-content__block {
        padding: 24px 0;
    }

    .seo-faq-item,
    .seo-glossary__item {
        padding: 20px;
    }
}