/* =====================================================================
   CAD90 — Feuille de style principale
   Thème : Éditorial sobre, typographie soignée, palette professionnelle
   ===================================================================== */

/* ─── IMPORT FONTS ────────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,600;0,700;1,400&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=DM+Mono:wght@400;500&display=swap');

/* ─── VARIABLES ───────────────────────────────────────────────────── */
:root {
    /* Couleurs */
    --white:          #ffffff;
    --cream:          #f8f6f2;
    --cream-dark:     #f0ede7;
    --border:         #e2ddd6;
    --border-dark:    #c8c2b8;
    --text:           #1a1916;
    --text-mid:       #4a4640;
    --text-muted:     #8c877f;
    --accent:         #c0392b;      /* rouge éditorial */
    --accent-hover:   #a93226;
    --accent-light:   #fdf0ee;
    --info:           #2563eb;
    --success:        #16a34a;
    --warning:        #d97706;

    /* Layout */
    --header-h:       64px;
    --sidebar-w:      260px;
    --content-max:    880px;

    /* Typographie */
    --font-serif:     'Source Serif 4', Georgia, 'Times New Roman', serif;
    --font-display:   'Playfair Display', Georgia, serif;
    --font-mono:      'DM Mono', 'Courier New', monospace;

    /* Espacements */
    --space-xs:       0.375rem;
    --space-sm:       0.75rem;
    --space-md:       1.25rem;
    --space-lg:       2rem;
    --space-xl:       3rem;
    --space-2xl:      5rem;

    /* Ombres */
    --shadow-sm:      0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md:      0 4px 12px rgba(0,0,0,.08), 0 2px 4px rgba(0,0,0,.04);
    --shadow-lg:      0 12px 32px rgba(0,0,0,.10), 0 4px 8px rgba(0,0,0,.04);

    /* Transitions */
    --transition:     0.18s ease;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-serif);
    background: var(--cream);
    color: var(--text);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol { list-style: none; }

button {
    font-family: inherit;
    cursor: pointer;
}

/* ─── SCROLLBAR ───────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: var(--cream); }
::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ─── FOCUS ACCESSIBILITY ─────────────────────────────────────────── */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ══════════════════════════════════════════════════════════════════
   HEADER
══════════════════════════════════════════════════════════════════ */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: var(--white);
    border-bottom: 1px solid var(--border);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.75rem;
    gap: 1rem;
}

/* Logo */
.header-logo {
    display: flex;
    align-items: center;
    gap: 0;
    text-decoration: none;
    flex-shrink: 0;
}

.header-logo img {
    height: 38px;
    width: auto;
}

.header-logo-text {
    font-family: var(--font-display);
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: -0.5px;
    line-height: 1;
}

.header-logo-text span {
    color: var(--accent);
}

/* Nav principale */
.header-nav {
    display: flex;
    align-items: stretch;
    gap: 0;
    height: var(--header-h);
}

.header-nav a {
    display: flex;
    align-items: center;
    padding: 0 1.1rem;
    font-family: var(--font-serif);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-mid);
    border-right: 1px solid var(--border);
    transition: color var(--transition), background var(--transition);
    white-space: nowrap;
    letter-spacing: 0.15px;
}

.header-nav li:first-child a { border-left: 1px solid var(--border); }

.header-nav a:hover,
.header-nav a.active {
    color: var(--text);
    background: var(--cream);
}

/* Burger mobile */
.header-burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 6px;
    cursor: pointer;
    flex-shrink: 0;
}

.header-burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 1px;
    transition: transform var(--transition), opacity var(--transition);
}

.header-burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.header-burger.is-open span:nth-child(2) { opacity: 0; }
.header-burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════════════════════════════════
   LAYOUT PRINCIPAL
══════════════════════════════════════════════════════════════════ */
.layout-wrapper {
    display: flex;
    padding-top: var(--header-h);
    min-height: 100vh;
}

/* ══════════════════════════════════════════════════════════════════
   SIDEBAR
══════════════════════════════════════════════════════════════════ */
#site-sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    position: fixed;
    top: var(--header-h);
    left: 0;
    height: calc(100vh - var(--header-h));
    overflow-y: auto;
    background: var(--white);
    border-right: 1px solid var(--border);
    padding: 1.75rem 0 2rem;
    z-index: 200;
    transition: transform var(--transition);
}

/* Section sidebar */
.sb-section {
    margin-bottom: 0.125rem;
}

.sb-section-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.55rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.8px;
    cursor: pointer;
    user-select: none;
    background: none;
    border: none;
    width: 100%;
    text-align: left;
    transition: color var(--transition);
}

.sb-section-toggle:hover { color: var(--text); }

.sb-chevron {
    font-size: 0.55rem;
    transition: transform 0.25s ease;
    flex-shrink: 0;
}

.sb-section.is-open .sb-chevron {
    transform: rotate(90deg);
}

/* Liens sidebar */
.sb-links {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
}

.sb-section.is-open .sb-links {
    max-height: 600px;
}

.sb-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0.5rem 1.5rem 0.5rem 2rem;
    font-family: var(--font-serif);
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-mid);
    border-left: 2px solid transparent;
    transition: color var(--transition), background var(--transition), border-color var(--transition);
    line-height: 1.4;
    text-decoration: none;
}

.sb-link:hover {
    color: var(--text);
    background: var(--cream);
}

.sb-link.is-active {
    color: var(--text);
    border-left-color: var(--accent);
    background: var(--accent-light);
    font-weight: 600;
}

.sb-icon {
    font-size: 0.85rem;
    opacity: 0.55;
    flex-shrink: 0;
    width: 16px;
    text-align: center;
}

/* Divider */
.sb-divider {
    height: 1px;
    background: var(--border);
    margin: 1rem 1.5rem;
}

/* Version badge */
.sb-version {
    padding: 0.75rem 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.sb-version-badge {
    display: inline-block;
    background: var(--cream-dark);
    border: 1px solid var(--border);
    padding: 2px 9px;
    border-radius: 3px;
    color: var(--text-mid);
    font-size: 0.65rem;
    margin-top: 4px;
}

/* ══════════════════════════════════════════════════════════════════
   CONTENU PRINCIPAL
══════════════════════════════════════════════════════════════════ */
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    min-width: 0;
}

/* ══════════════════════════════════════════════════════════════════
   HERO
══════════════════════════════════════════════════════════════════ */
.hero {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 0;
    border-bottom: 1px solid var(--border);
    background: var(--white);
    min-height: 480px;
}

.hero-inner {
    padding: 4rem 3.5rem 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-eyebrow {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 1.5rem;
}

.eyebrow-dot {
    width: 7px;
    height: 7px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
    animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.75); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 3.5vw, 3.2rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.5px;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.hero-title em {
    font-style: italic;
    font-weight: 600;
    color: var(--accent);
}

.hero-desc {
    font-size: 1rem;
    color: var(--text-mid);
    line-height: 1.8;
    max-width: 500px;
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.hero-actions {
    display: flex;
    gap: 0.875rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.stat-num {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text);
    line-height: 1;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-sep {
    width: 1px;
    height: 36px;
    background: var(--border);
}

/* Diagramme hero */
.hero-visual {
    background: var(--cream);
    border-left: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2.5rem;
    overflow: hidden;
}

.hero-diagram {
    width: 100%;
    max-width: 280px;
    position: relative;
}

.diagram-label {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 1rem;
    letter-spacing: 0.8px;
    text-transform: uppercase;
}

.diagram-box {
    border: 2px solid var(--text);
    background: var(--white);
    position: relative;
}

.diagram-section {
    background: var(--text);
    color: var(--white);
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 1px;
    padding: 10px 14px;
    text-transform: uppercase;
}

.diagram-section.bottom { border-top: 2px solid var(--text); }

.diagram-middle {
    display: flex;
    align-items: stretch;
    height: 90px;
}

.diagram-wall {
    background: var(--cream-dark);
    border-right: 2px solid var(--text);
    writing-mode: vertical-lr;
    text-orientation: mixed;
    transform: rotate(180deg);
    font-family: var(--font-mono);
    font-size: 0.58rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    padding: 8px 6px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.diagram-wall.right {
    border-right: none;
    border-left: 2px solid var(--text);
    transform: none;
}

.diagram-void {
    flex: 1;
    position: relative;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    overflow: hidden;
}

.diagram-water {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 30%;
    background: linear-gradient(180deg, rgba(59,130,246,.12) 0%, rgba(59,130,246,.25) 100%);
    border-top: 1px dashed rgba(59,130,246,.5);
}

.diagram-dim {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text);
    font-weight: 500;
    background: rgba(255,255,255,.9);
    padding: 2px 6px;
    border-radius: 2px;
}

.diagram-dim-v {
    position: absolute;
    right: -2.5rem;
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-mid);
    writing-mode: vertical-lr;
}

.diagram-meta {
    display: flex;
    justify-content: space-between;
    margin-top: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
    flex-wrap: wrap;
    gap: 4px;
}

/* ══════════════════════════════════════════════════════════════════
   BOUTONS
══════════════════════════════════════════════════════════════════ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 11px 22px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.3px;
    border-radius: 3px;
    border: 1.5px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
    white-space: nowrap;
    text-decoration: none;
    cursor: pointer;
    line-height: 1;
}

.btn-primary {
    background: var(--text);
    color: var(--white);
    border-color: var(--text);
}
.btn-primary:hover {
    background: var(--accent);
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.btn-outline {
    background: transparent;
    color: var(--text-mid);
    border-color: var(--border-dark);
}
.btn-outline:hover {
    color: var(--text);
    border-color: var(--text);
    background: var(--cream-dark);
}

.btn-outline-dark {
    background: transparent;
    color: var(--text);
    border-color: var(--text);
}
.btn-outline-dark:hover {
    background: var(--text);
    color: var(--white);
}

.btn-light {
    background: var(--white);
    color: var(--text);
    border-color: var(--white);
}
.btn-light:hover {
    background: var(--cream);
    border-color: var(--cream);
}

.btn-light-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,0.45);
}
.btn-light-outline:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.7);
}

/* Lien texte */
.text-link {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition);
}
.text-link:hover { border-bottom-color: var(--accent); }

/* ══════════════════════════════════════════════════════════════════
   SECTIONS GÉNÉRIQUES
══════════════════════════════════════════════════════════════════ */
.section {
    border-bottom: 1px solid var(--border);
}

.section-inner {
    padding: 4rem 3.5rem;
    max-width: var(--content-max);
}

.section-inner--split {
    max-width: none;
    display: grid;
    grid-template-columns: 1fr 440px;
    gap: 4rem;
    align-items: start;
    padding: 4rem 3.5rem;
}

.section-inner--narrow {
    max-width: 700px;
    margin: 0 auto;
    padding: 4rem 3.5rem;
}

/* En-tête de section */
.section-head {
    margin-bottom: 2.5rem;
}

.section-head--center {
    text-align: center;
}

.section-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 0.875rem;
}

.section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.section-head--center .section-label {
    justify-content: center;
}

.section-head--center .section-label::after {
    display: none;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 2.5vw, 2.2rem);
    font-weight: 700;
    letter-spacing: -0.4px;
    line-height: 1.15;
    color: var(--text);
    margin-bottom: 0.75rem;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-mid);
    line-height: 1.75;
    font-weight: 300;
    max-width: 560px;
    margin: 0 auto;
}

.section-cta {
    margin-top: 2.5rem;
    text-align: center;
}

/* ══════════════════════════════════════════════════════════════════
   SECTION : PRÉSENTATION
══════════════════════════════════════════════════════════════════ */
.section-what { background: var(--white); }

.what-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.what-text p {
    font-size: 0.975rem;
    color: var(--text-mid);
    line-height: 1.85;
    margin-bottom: 1.25rem;
    font-weight: 300;
}

.what-text p strong { color: var(--text); font-weight: 600; }

.what-text .text-link { margin-top: 0.5rem; display: inline-block; }

/* Cartes feature */
.what-features {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.feature-card {
    background: var(--white);
    padding: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: background var(--transition);
}

.feature-card:hover { background: var(--cream); }

.feature-icon {
    width: 40px;
    height: 40px;
    background: var(--cream-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--text-mid);
}

.feature-body h3 {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.35rem;
}

.feature-body p {
    font-size: 0.82rem;
    color: var(--text-mid);
    line-height: 1.65;
    font-weight: 300;
}

/* ══════════════════════════════════════════════════════════════════
   SECTION : TUTORIELS
══════════════════════════════════════════════════════════════════ */
.section-tutos { background: var(--cream); }

.tuto-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.tuto-card {
    background: var(--white);
    padding: 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    transition: background var(--transition);
    position: relative;
}

.tuto-card:hover { background: var(--cream); }

.tuto-card--featured {
    grid-column: span 3;
    border-bottom: 2px solid var(--border-dark);
    flex-direction: row;
    align-items: flex-start;
    gap: 2rem;
}

.tuto-card--featured .tuto-card-title {
    font-size: 1.25rem;
}

.tuto-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.tuto-card--featured .tuto-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
    flex-shrink: 0;
}

.tuto-num {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--cream-dark);
    line-height: 1;
    letter-spacing: -1px;
}

.tuto-card--featured .tuto-num {
    font-size: 2.5rem;
    color: var(--border-dark);
}

/* Badges niveau */
.tuto-badge {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 3px 9px;
    border: 1px solid;
    border-radius: 2px;
    font-weight: 500;
}

.tuto-badge--debut  { color: var(--success); border-color: var(--success); background: rgba(22,163,74,.06); }
.tuto-badge--inter  { color: var(--warning); border-color: var(--warning); background: rgba(217,119,6,.06); }
.tuto-badge--avance { color: var(--accent);  border-color: var(--accent);  background: rgba(192,57,43,.06); }

.tuto-card-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.25;
    letter-spacing: -0.2px;
}

.tuto-card-title a {
    color: var(--text);
    text-decoration: none;
    transition: color var(--transition);
}

.tuto-card-title a:hover { color: var(--accent); }

.tuto-card-desc {
    font-size: 0.845rem;
    color: var(--text-mid);
    line-height: 1.7;
    font-weight: 300;
    flex: 1;
}

.tuto-card-meta {
    display: flex;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.meta-time {
    display: flex;
    align-items: center;
    gap: 4px;
}

.tuto-card-link {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--accent);
    text-decoration: none;
    letter-spacing: 0.3px;
    margin-top: auto;
    transition: letter-spacing var(--transition);
}

.tuto-card-link:hover { letter-spacing: 1px; }

/* ══════════════════════════════════════════════════════════════════
   SECTION : INSTALLATION
══════════════════════════════════════════════════════════════════ */
.section-install { background: var(--white); }

.install-text p {
    font-size: 0.975rem;
    color: var(--text-mid);
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-weight: 300;
}

.install-checklist {
    margin: 1.5rem 0 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.install-checklist li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.875rem;
    color: var(--text-mid);
    font-weight: 300;
}

.install-checklist li svg { color: var(--success); flex-shrink: 0; }

/* Bloc de code */
.install-code {
    position: relative;
    border: 1px solid var(--border);
    border-radius: 6px;
    overflow: hidden;
    background: #1a1916;
    box-shadow: var(--shadow-md);
}

.code-block-label {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 10px 1rem;
    background: #262420;
    border-bottom: 1px solid rgba(255,255,255,.07);
}

.code-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}
.code-dot--red    { background: #ff5f57; }
.code-dot--yellow { background: #febc2e; }
.code-dot--green  { background: #28c840; }

.code-file {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: rgba(255,255,255,.4);
    margin-left: 6px;
    letter-spacing: 0.5px;
}

.code-block {
    display: block;
    padding: 1.5rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.75;
    color: #c9d1d9;
    overflow-x: auto;
    background: transparent;
    white-space: pre;
}

.code-comment { color: #6b8a7a; }
.code-path    { color: #a8e6cf; }
.code-keyword { color: #ffcc99; }
.code-string  { color: #a5d6ff; }

.code-copy-btn {
    position: absolute;
    top: 48px;
    right: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255,255,255,.09);
    border: 1px solid rgba(255,255,255,.12);
    color: rgba(255,255,255,.55);
    font-family: var(--font-mono);
    font-size: 0.65rem;
    padding: 5px 11px;
    border-radius: 3px;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.code-copy-btn:hover {
    background: rgba(255,255,255,.16);
    color: rgba(255,255,255,.9);
}

.code-copy-btn.is-copied {
    color: #28c840;
    border-color: rgba(40,200,64,.3);
}

/* ══════════════════════════════════════════════════════════════════
   SECTION : LIMITES
══════════════════════════════════════════════════════════════════ */
.section-limites { background: var(--cream); }

.limites-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.limite-item {
    background: var(--white);
    padding: 1.75rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    transition: background var(--transition);
}

.limite-item:hover { background: var(--cream); }

.limite-item--warn .limite-icon { color: var(--warning); }
.limite-item--warn .limite-icon svg { stroke: var(--warning); }

.limite-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--cream-dark);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-mid);
}

.limite-item h3 {
    font-family: var(--font-serif);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 0.4rem;
}

.limite-item p {
    font-size: 0.845rem;
    color: var(--text-mid);
    line-height: 1.65;
    font-weight: 300;
}

/* ══════════════════════════════════════════════════════════════════
   SECTION : BLOG
══════════════════════════════════════════════════════════════════ */
.section-blog { background: var(--white); }

.blog-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    margin-top: 0;
}

.blog-card {
    background: var(--white);
    display: flex;
    flex-direction: column;
    transition: background var(--transition);
    overflow: hidden;
}

.blog-card:hover { background: var(--cream); }

.blog-card-img {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--cream-dark);
    border-bottom: 1px solid var(--border);
}

.blog-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s ease;
}

.blog-card:hover .blog-card-img img { transform: scale(1.03); }

.blog-card-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.blog-card-cat {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
}

.blog-card-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.2px;
}

.blog-card-title a {
    color: var(--text);
    transition: color var(--transition);
}

.blog-card-title a:hover { color: var(--accent); }

.blog-card-excerpt {
    font-size: 0.845rem;
    color: var(--text-mid);
    line-height: 1.7;
    font-weight: 300;
    flex: 1;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: var(--text-muted);
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.blog-card-author { color: var(--text-mid); font-weight: 500; }
.blog-card-read {
    margin-left: auto;
    background: var(--cream-dark);
    padding: 2px 8px;
    border-radius: 2px;
}

/* ══════════════════════════════════════════════════════════════════
   SECTION : FAQ
══════════════════════════════════════════════════════════════════ */
.section-faq { background: var(--cream); }

.faq-list {
    border: 1px solid var(--border);
    background: var(--white);
    border-radius: 4px;
    overflow: hidden;
}

.faq-item {
    border-bottom: 1px solid var(--border);
}

.faq-item:last-child { border-bottom: none; }

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
    padding: 1.25rem 1.5rem;
    background: none;
    border: none;
    text-align: left;
    font-family: var(--font-serif);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.faq-question:hover { background: var(--cream); }

.faq-item.is-open .faq-question { color: var(--accent); }

.faq-icon {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform 0.25s ease, color var(--transition);
    line-height: 1;
}

.faq-item.is-open .faq-icon {
    transform: rotate(45deg);
    color: var(--accent);
}

.faq-answer {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.35s ease;
}

.faq-item.is-open .faq-answer {
    max-height: 400px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    font-size: 0.9rem;
    color: var(--text-mid);
    line-height: 1.85;
    font-weight: 300;
}

.faq-answer a {
    color: var(--accent);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition);
}

.faq-answer a:hover { border-bottom-color: var(--accent); }

/* ══════════════════════════════════════════════════════════════════
   SECTION : CTA FINAL
══════════════════════════════════════════════════════════════════ */
.section-cta-final {
    background: var(--text);
    border-bottom: none;
}

.cta-final-inner {
    padding: 5rem 3.5rem;
    text-align: center;
    max-width: var(--content-max);
    margin: 0 auto;
}

.cta-final-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    font-weight: 700;
    color: var(--white);
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
}

.cta-final-title em {
    font-style: italic;
    color: rgba(255,255,255,.7);
}

.cta-final-desc {
    font-size: 1rem;
    color: rgba(255,255,255,.6);
    line-height: 1.75;
    max-width: 480px;
    margin: 0 auto 2.5rem;
    font-weight: 300;
}

.cta-final-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ══════════════════════════════════════════════════════════════════
   FOOTER
══════════════════════════════════════════════════════════════════ */
#site-footer {
    background: var(--text);
    border-top: 1px solid rgba(255,255,255,.06);
    margin-left: var(--sidebar-w);
}

.footer-main {
    display: grid;
    grid-template-columns: 200px 1fr 1fr 1fr;
    gap: 3rem;
    padding: 3.5rem 3.5rem 2.5rem;
    border-bottom: 1px solid rgba(255,255,255,.07);
}

.footer-brand-logo {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 0.75rem;
}

.footer-brand-logo span { color: var(--accent); }

.footer-brand-desc {
    font-size: 0.82rem;
    color: rgba(255,255,255,.4);
    line-height: 1.75;
    font-weight: 300;
}

.footer-col-title {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: rgba(255,255,255,.4);
    margin-bottom: 1.25rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.footer-links a {
    font-size: 0.845rem;
    color: rgba(255,255,255,.55);
    text-decoration: none;
    transition: color var(--transition);
    font-weight: 300;
}

.footer-links a:hover { color: var(--white); }

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 3.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-copy {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: rgba(255,255,255,.3);
    letter-spacing: 0.5px;
}

.footer-dima {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: rgba(255,255,255,.45);
    text-align: center;
    letter-spacing: 0.5px;
}

.footer-legal {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.footer-legal a {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    color: rgba(255,255,255,.3);
    text-decoration: none;
    transition: color var(--transition);
    letter-spacing: 0.3px;
}

.footer-legal a:hover { color: rgba(255,255,255,.7); }

/* ══════════════════════════════════════════════════════════════════
   ANIMATIONS D'ENTRÉE
══════════════════════════════════════════════════════════════════ */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-inner > * {
    animation: fadeInUp 0.55s ease both;
}

.hero-inner > *:nth-child(1) { animation-delay: 0.05s; }
.hero-inner > *:nth-child(2) { animation-delay: 0.15s; }
.hero-inner > *:nth-child(3) { animation-delay: 0.25s; }
.hero-inner > *:nth-child(4) { animation-delay: 0.35s; }
.hero-inner > *:nth-child(5) { animation-delay: 0.45s; }

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════ */

/* ─── Tablette ─────────────────────────────────────────────────── */
@media (max-width: 1100px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        display: none;
    }

    .what-grid {
        grid-template-columns: 1fr;
    }

    .tuto-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .tuto-card--featured {
        grid-column: span 2;
    }

    .section-inner--split {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .limites-grid {
        grid-template-columns: 1fr;
    }

    .blog-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-main {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

/* ─── Mobile ─────────────────────────────────────────────────── */
@media (max-width: 768px) {

    /* Sidebar mobile */
    #site-sidebar {
        transform: translateX(-100%);
        z-index: 250;
        box-shadow: var(--shadow-lg);
    }

    #site-sidebar.is-open {
        transform: translateX(0);
    }

    .main-content { margin-left: 0; }
    #site-footer  { margin-left: 0; }

    .header-burger { display: flex; }
    .header-nav { display: none; }

    /* Hero */
    .hero-inner {
        padding: 2.5rem 1.5rem;
    }

    /* Sections */
    .section-inner,
    .section-inner--narrow {
        padding: 2.5rem 1.5rem;
    }

    .cta-final-inner {
        padding: 3.5rem 1.5rem;
    }

    /* Grilles */
    .tuto-grid {
        grid-template-columns: 1fr;
    }

    .tuto-card--featured {
        grid-column: span 1;
        flex-direction: column;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-main {
        grid-template-columns: 1fr;
        padding: 2.5rem 1.5rem;
    }

    .footer-bottom {
        padding: 1.25rem 1.5rem;
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }

    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    :root { --header-h: 56px; }

    .hero-title { font-size: 1.85rem; }
    .section-title { font-size: 1.5rem; }
    .hero-stats { gap: 1rem; }
    .stat-sep { display: none; }
}

/* ══════════════════════════════════════════════════════════════════
   OVERLAY MOBILE (sidebar)
══════════════════════════════════════════════════════════════════ */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.45);
    z-index: 240;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.is-active { display: block; }