/* ============================================
   QRonimo — Content / Article Pages
   Supplementary stylesheet loaded after styles.css
   ============================================ */

/* ---- Page shell ---- */
.content-page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: var(--color-bg, #fff);
    color: var(--color-text, #111);
}

/* ---- Header ---- */
.content-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg, #fff);
    border-bottom: 1px solid var(--color-border, #e5e5e5);
}

.content-header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 56px;
    display: flex;
    align-items: center;
    gap: 2rem;
}

.content-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: inherit;
    font-weight: 700;
    font-size: 1.05rem;
    flex-shrink: 0;
}

.content-brand-name {
    font-weight: 700;
    letter-spacing: -0.01em;
}

.content-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: auto;
    flex-wrap: nowrap;
}

.content-nav a {
    color: inherit;
    text-decoration: none;
    padding: 0.35rem 0.65rem;
    border-radius: 6px;
    font-size: 0.875rem;
    white-space: nowrap;
    transition: background 0.15s;
}

.content-nav a:hover {
    background: var(--color-surface, #f5f5f5);
}

.content-nav a[aria-current="page"] {
    font-weight: 600;
    background: var(--color-surface, #f5f5f5);
}

.content-nav-cta {
    background: var(--color-text, #111) !important;
    color: var(--color-bg, #fff) !important;
    font-weight: 600 !important;
    padding: 0.35rem 0.9rem !important;
}

.content-nav-cta:hover {
    opacity: 0.85;
}

.content-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.35rem;
    color: inherit;
    margin-left: auto;
}

/* ---- Main ---- */
.content-main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    padding: 3rem 1.5rem 4rem;
    display: grid;
    grid-template-columns: 1fr min(260px, 25%);
    gap: 3rem;
    align-items: start;
}

/* ---- Article ---- */
.content-article {
    min-width: 0;
}

.article-header {
    margin-bottom: 2.5rem;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8rem;
    color: var(--color-muted, #666);
    margin-bottom: 1rem;
}

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

.article-breadcrumb a:hover {
    text-decoration: underline;
}

.content-article h1 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin: 0 0 1rem;
}

.article-lead {
    font-size: 1.125rem;
    line-height: 1.65;
    color: var(--color-muted, #444);
    margin: 0;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-muted, #888);
    margin-top: 0.75rem;
}

/* ---- TOC ---- */
.article-toc {
    background: var(--color-surface, #f8f8f8);
    border: 1px solid var(--color-border, #e5e5e5);
    border-radius: 10px;
    padding: 1.25rem 1.5rem;
    margin-bottom: 2.5rem;
    font-size: 0.875rem;
}

.article-toc strong {
    display: block;
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted, #666);
}

.article-toc ol {
    margin: 0;
    padding-left: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

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

.article-toc a:hover {
    text-decoration: underline;
}

/* ---- Sections ---- */
.content-article section {
    margin-bottom: 3rem;
}

.content-article h2 {
    font-size: 1.4rem;
    letter-spacing: -0.015em;
    margin: 0 0 1rem;
    padding-top: 0.25rem;
}

.content-article h3 {
    font-size: 1.05rem;
    margin: 1.75rem 0 0.6rem;
}

.content-article p {
    line-height: 1.7;
    margin: 0 0 1rem;
}

.content-article ul,
.content-article ol {
    padding-left: 1.5rem;
    margin: 0 0 1rem;
}

.content-article li {
    line-height: 1.65;
    margin-bottom: 0.35rem;
}

/* ---- Code ---- */
.content-article code {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.875em;
    background: var(--color-surface, #f5f5f5);
    padding: 0.1em 0.35em;
    border-radius: 4px;
}

.code-block {
    background: var(--color-surface, #f5f5f5);
    border: 1px solid var(--color-border, #e5e5e5);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    margin: 0 0 1.25rem;
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.825rem;
    line-height: 1.6;
    white-space: pre;
}

.code-block code {
    background: none;
    padding: 0;
    font-size: inherit;
}

.code-diagram {
    font-family: var(--font-mono, 'JetBrains Mono', monospace);
    font-size: 0.8rem;
    line-height: 1.6;
    background: var(--color-surface, #f5f5f5);
    border: 1px solid var(--color-border, #e5e5e5);
    border-radius: 8px;
    padding: 1.25rem 1.5rem;
    overflow-x: auto;
    white-space: pre;
    margin: 0;
}

/* ---- Tables ---- */
.content-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    margin: 0 0 1.5rem;
}

.content-table th,
.content-table td {
    padding: 0.6rem 0.9rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border, #e5e5e5);
    vertical-align: top;
}

.content-table th {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-muted, #666);
    background: var(--color-surface, #f8f8f8);
}

.content-table tr:last-child td {
    border-bottom: none;
}

.content-table code {
    font-size: 0.8em;
}

figure {
    margin: 0 0 1.5rem;
}

figcaption {
    font-size: 0.8rem;
    color: var(--color-muted, #666);
    margin-top: 0.5rem;
    line-height: 1.5;
}

/* ---- ECC level cards ---- */
.ecc-level-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.ecc-level-card {
    border: 2px solid var(--color-border, #e5e5e5);
    border-radius: 10px;
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
}

.ecc-level-card p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--color-muted, #555);
    line-height: 1.55;
}

.ecc-level-label {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: 0.15rem;
}

.ecc-level-name {
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 0.25rem;
}

.ecc-level-recovery {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.ecc-level-l { border-color: #c8e6c9; }
.ecc-level-l .ecc-level-label { color: #388e3c; }
.ecc-level-m { border-color: #fff9c4; }
.ecc-level-m .ecc-level-label { color: #f57f17; }
.ecc-level-q { border-color: #ffe0b2; }
.ecc-level-q .ecc-level-label { color: #e65100; }
.ecc-level-h { border-color: #ffcdd2; }
.ecc-level-h .ecc-level-label { color: #c62828; }

/* ---- Definition list / checklist ---- */
.content-checklist {
    margin: 0 0 1.5rem;
}

.content-checklist dt {
    font-weight: 600;
    margin-top: 1.25rem;
}

.content-checklist dd {
    margin: 0.25rem 0 0 1.25rem;
    line-height: 1.65;
    color: var(--color-muted, #444);
    font-size: 0.9rem;
}

/* ---- CTA sections ---- */
.article-cta,
.article-cta-section {
    background: var(--color-surface, #f8f8f8);
    border-radius: 12px;
    padding: 2rem 2.25rem;
    margin-top: 1rem;
}

.article-cta h2,
.article-cta-section h2 {
    margin-top: 0;
}

.article-cta-link,
.article-cta-button {
    display: inline-block;
    background: var(--color-text, #111);
    color: var(--color-bg, #fff);
    padding: 0.7rem 1.4rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    font-size: 0.9rem;
    transition: opacity 0.15s;
    margin-top: 0.5rem;
}

.article-cta-link:hover,
.article-cta-button:hover {
    opacity: 0.82;
}

.article-related {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border, #e5e5e5);
}

.article-related ul {
    list-style: none;
    padding: 0;
}

.article-related li {
    padding: 0.4rem 0;
    border-bottom: 1px solid var(--color-border, #f0f0f0);
}

.article-related li:last-child {
    border-bottom: none;
}

.article-related a {
    color: inherit;
    text-decoration: none;
    font-size: 0.9rem;
}

.article-related a:hover {
    text-decoration: underline;
}

/* ---- Ad slot ---- */
.ad-content-slot {
    position: sticky;
    top: 72px;
}

/* ---- Footer ---- */
.content-footer {
    border-top: 1px solid var(--color-border, #e5e5e5);
    padding: 2.5rem 1.5rem;
    font-size: 0.85rem;
}

.content-footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 3rem;
    align-items: flex-start;
    flex-wrap: wrap;
}

.content-footer-brand {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    color: var(--color-muted, #666);
}

.content-footer-brand strong {
    color: var(--color-text, #111);
    font-size: 0.95rem;
}

.content-footer-nav {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
}

.content-footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    min-width: 130px;
}

.content-footer-col strong {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-muted, #888);
    margin-bottom: 0.15rem;
}

.content-footer-col a {
    color: var(--color-muted, #555);
    text-decoration: none;
    font-size: 0.85rem;
}

.content-footer-col a:hover {
    color: var(--color-text, #111);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .content-main {
        grid-template-columns: 1fr;
    }

    .ad-content-slot {
        position: static;
    }
}

@media (max-width: 720px) {
    .content-nav {
        display: none;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--color-bg, #fff);
        border-bottom: 1px solid var(--color-border, #e5e5e5);
        flex-direction: column;
        align-items: flex-start;
        padding: 0.75rem 1.5rem 1rem;
        gap: 0.15rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    }

    .content-nav.open {
        display: flex;
    }

    .content-nav a {
        width: 100%;
        padding: 0.55rem 0.5rem;
    }

    .content-nav-toggle {
        display: flex;
    }

    .content-header-inner {
        position: relative;
    }

    .content-main {
        padding: 2rem 1rem 3rem;
    }

    .ecc-level-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .ecc-level-grid {
        grid-template-columns: 1fr;
    }

    .article-cta,
    .article-cta-section {
        padding: 1.5rem;
    }
}

/* ---- Dark mode ---- */
@media (prefers-color-scheme: dark) {
    .content-table th {
        background: rgba(255,255,255,0.05);
        color: rgba(255,255,255,0.5);
    }

    .ecc-level-l { border-color: #1b3a1d; }
    .ecc-level-m { border-color: #3a3000; }
    .ecc-level-q { border-color: #3a1a00; }
    .ecc-level-h { border-color: #3a0a0a; }
}

/* ─── Language Switcher ─────────────────────────────────────────── */
.content-nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm, 0.5rem);
    flex-shrink: 0;
}

.content-lang-switcher {
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    border: 1px solid var(--color-border, #e5e5e5);
    border-radius: 4px;
    padding: 0.25rem 0.5rem;
    font-family: var(--font-mono, monospace);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary, #737373);
    cursor: pointer;
    line-height: 1.5;
    transition: border-color 0.15s, color 0.15s;
    min-width: 3rem;
    text-align: center;
}

.content-lang-switcher:hover,
.content-lang-switcher:focus {
    border-color: var(--color-text-primary, #0a0a0a);
    color: var(--color-text-primary, #0a0a0a);
    outline: none;
}

/* Hide inactive language blocks */
.lang-content[hidden] { display: none; }