/* C++ tutorial pages — typography, colors, SEO content blocks */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@600;700;800&family=Source+Sans+3:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
    --cpp-tut-primary: #00599c;
    --cpp-tut-secondary: #003d6b;
    --cpp-tut-accent: #3f5efb;
    --cpp-tut-mint: #10b981;
    --cpp-tut-amber: #f59e0b;
    --cpp-tut-rose: #e11d48;
    --cpp-tut-surface: #f0f7ff;
    --cpp-tut-card: #ffffff;
    --cpp-tut-text: #1e293b;
    --cpp-tut-muted: #64748b;
    --cpp-tut-heading: 'Plus Jakarta Sans', 'Segoe UI', system-ui, sans-serif;
    --cpp-tut-body: 'Source Sans 3', 'Segoe UI', system-ui, sans-serif;
}

.cpp-tutorial-main {
    font-family: var(--cpp-tut-body);
    font-size: 1.0625rem;
    line-height: 1.75;
    color: var(--cpp-tut-text);
    -webkit-font-smoothing: antialiased;
}

.cpp-tutorial-main .content-header h1,
.cpp-tutorial-main .content-section h2,
.cpp-tutorial-main .content-section h3,
.cpp-tutorial-main .cpp-seo-overview h2,
.cpp-tutorial-main .cpp-seo-faq h2 {
    font-family: var(--cpp-tut-heading);
    letter-spacing: -0.02em;
    color: var(--cpp-tut-secondary);
}

.cpp-tutorial-main .content-header .lead,
.cpp-tutorial-main .cpp-seo-lead {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--cpp-tut-muted);
    line-height: 1.65;
}

.cpp-tutorial-main .content-header h1 {
    background: linear-gradient(120deg, var(--cpp-tut-primary) 0%, var(--cpp-tut-accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.cpp-tutorial-main .topic-badge,
.cpp-tutorial-main .content-header .badge {
    font-family: var(--cpp-tut-heading);
    font-weight: 700;
    letter-spacing: 0.02em;
}

.cpp-tutorial-main .content-section {
    border-left: 5px solid var(--cpp-tut-primary);
    background: linear-gradient(135deg, #f8fbff 0%, var(--cpp-tut-surface) 100%);
    box-shadow: 0 4px 24px rgba(0, 89, 156, 0.08);
}

.cpp-tutorial-main .content-section h2 {
    font-size: 1.65rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.cpp-tutorial-main .content-section h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--cpp-tut-primary);
}

.cpp-tutorial-main .content-section p {
    margin-bottom: 1rem;
}

.cpp-tutorial-main .note-box,
.cpp-tutorial-main .highlight-box {
    border-radius: 12px;
    font-size: 1rem;
}

/* SEO overview block (injected) */
.cpp-seo-overview {
    margin: 0 0 2rem;
    padding: 0;
}

.cpp-seo-intro {
    background: linear-gradient(135deg, #e8f4fc 0%, #f0f4ff 50%, #fff8f0 100%);
    border: 1px solid rgba(0, 89, 156, 0.15);
    border-radius: 16px;
    padding: 1.75rem 2rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 8px 32px rgba(63, 94, 251, 0.1);
}

.cpp-seo-intro .cpp-seo-topic-label {
    display: inline-block;
    font-family: var(--cpp-tut-heading);
    font-size: 0.75rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--cpp-tut-accent);
    margin-bottom: 0.75rem;
}

.cpp-seo-lead {
    margin: 0;
    font-size: 1.15rem !important;
    color: var(--cpp-tut-text) !important;
}

.cpp-seo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.cpp-seo-card {
    background: var(--cpp-tut-card);
    border-radius: 14px;
    padding: 1.35rem 1.5rem;
    border: 1px solid rgba(0, 89, 156, 0.1);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.cpp-seo-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(0, 89, 156, 0.12);
}

.cpp-seo-card h3 {
    font-family: var(--cpp-tut-heading);
    font-size: 1.05rem;
    font-weight: 800;
    margin: 0 0 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.cpp-seo-card--learn h3 { color: var(--cpp-tut-mint); }
.cpp-seo-card--why h3 { color: var(--cpp-tut-accent); }
.cpp-seo-card--terms h3 { color: var(--cpp-tut-amber); }

.cpp-seo-card ul {
    margin: 0;
    padding-left: 1.2rem;
}

.cpp-seo-card li {
    margin-bottom: 0.45rem;
    color: var(--cpp-tut-text);
    font-size: 0.98rem;
}

.cpp-seo-card li strong {
    color: var(--cpp-tut-primary);
}

.cpp-seo-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.cpp-seo-keyword {
    font-family: var(--cpp-tut-heading);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #dbeafe, #e0e7ff);
    color: var(--cpp-tut-secondary);
    border: 1px solid rgba(0, 89, 156, 0.12);
}

.cpp-seo-faq {
    margin: 2.5rem 0 1.5rem;
    padding: 1.75rem 2rem;
    background: linear-gradient(180deg, #fff 0%, #f8fafc 100%);
    border-radius: 16px;
    border: 1px solid rgba(0, 89, 156, 0.12);
}

.cpp-seo-faq h2 {
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.cpp-faq-item {
    margin-bottom: 1.15rem;
    padding-bottom: 1.15rem;
    border-bottom: 1px dashed rgba(0, 89, 156, 0.15);
}

.cpp-faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.cpp-faq-item h3 {
    font-family: var(--cpp-tut-heading);
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--cpp-tut-primary);
    margin: 0 0 0.5rem;
}

.cpp-faq-item p {
    margin: 0;
    color: var(--cpp-tut-muted);
    font-size: 1rem;
}

.cpp-tutorial-main code:not(pre code) {
    background: #e8f0fe;
    color: #c7254e;
    padding: 0.15em 0.45em;
    border-radius: 6px;
    font-size: 0.92em;
    font-weight: 600;
}

.cpp-tutorial-main pre {
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

/* Tutorial hero / diagram images — full width of content section */
.cpp-tutorial-figure {
    margin: 1.75rem -1.5rem 1.75rem;
    padding: 0;
    width: calc(100% + 3rem);
    max-width: none;
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    border: 1px solid rgba(0, 89, 156, 0.12);
    box-shadow: 0 10px 36px rgba(0, 89, 156, 0.12);
}

.cpp-tutorial-figure img {
    display: block;
    width: 100%;
    max-width: none;
    height: auto;
    min-height: 420px;
    max-height: none;
    object-fit: contain;
    object-position: center center;
    background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
}

.cpp-tutorial-figure figcaption {
    padding: 1rem 1.25rem;
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--cpp-tut-muted);
    background: linear-gradient(135deg, #f8fbff 0%, #fff 100%);
    border-top: 1px solid rgba(0, 89, 156, 0.08);
}

.cpp-tutorial-figure figcaption strong {
    color: var(--cpp-tut-primary);
    font-family: var(--cpp-tut-heading);
}

@media (max-width: 768px) {
    .cpp-seo-intro,
    .cpp-seo-faq {
        padding: 1.25rem 1.25rem;
    }

    .cpp-tutorial-figure {
        margin: 1.5rem -1rem 1.5rem;
        width: calc(100% + 2rem);
    }

    .cpp-tutorial-figure img {
        min-height: 280px;
    }

    .cpp-tutorial-figure figcaption {
        padding: 0.85rem 1rem;
        font-size: 0.9rem;
    }
}