/* ============================================================
   seller-vat.com — Feuille de styles principale
   Inspiration : laposte.fr — sobre, institutionnel, structuré
   ============================================================ */

/* ---- Variables CSS ---- */
:root {
    --color-primary:    #1a3a5c;
    --color-secondary:  #2d7dd2;
    --color-accent:     #27ae60;
    --color-bg:         #ffffff;
    --color-bg-alt:     #f5f7fa;
    --color-text:       #1a1a2e;
    --color-text-muted: #5a6a7a;
    --color-border:     #e2e8f0;
    --color-cta:        #2d7dd2;
    --color-partner:    #e67e22;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height: 1.7;

    --container-max: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    --border-radius: 8px;
    --box-shadow: 0 2px 12px rgba(26,58,92,0.08);
    --transition: 0.2s ease;
}

/* ---- Reset & Base ---- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: var(--line-height);
    color: var(--color-text);
    background: var(--color-bg);
}

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

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

ul, ol {
    list-style: none;
}

/* ---- Typographie ---- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

strong { font-weight: 700; }
em { font-style: italic; }

/* ---- Container ---- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* ============================================================
   NAVIGATION / HEADER
   ============================================================ */
.site-header {
    background: var(--color-bg);
    border-bottom: 2px solid var(--color-primary);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 8px rgba(26,58,92,0.12);
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

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

.site-logo img {
    height: 40px;
    width: auto;
}

/* Menu principal */
.main-nav {
    display: flex;
    align-items: center;
    gap: 0;
}

.main-nav__list {
    display: flex;
    align-items: center;
    gap: 0;
}

.main-nav__item {
    position: relative;
}

.main-nav__link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0.6rem 0.9rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
}

.main-nav__link:hover,
.main-nav__item--active > .main-nav__link {
    background: var(--color-bg-alt);
    color: var(--color-secondary);
    text-decoration: none;
}

/* Dropdown arrow */
.main-nav__arrow {
    font-size: 0.6rem;
    transition: transform var(--transition);
}

.main-nav__item:hover .main-nav__arrow {
    transform: rotate(180deg);
}

/* Dropdown */
.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    min-width: 220px;
    z-index: 100;
    padding: 0.5rem 0;
}

.main-nav__item:hover .dropdown {
    display: block;
}

.dropdown__link {
    display: block;
    padding: 0.6rem 1.2rem;
    font-size: 0.875rem;
    color: var(--color-text);
    text-decoration: none;
    transition: background var(--transition);
}

.dropdown__link:hover {
    background: var(--color-bg-alt);
    color: var(--color-secondary);
    text-decoration: none;
}

/* Menu burger mobile */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--border-radius);
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: 0.6rem 0;
}

.breadcrumb__list {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.8rem;
}

.breadcrumb__item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--color-text-muted);
}

.breadcrumb__item a {
    color: var(--color-secondary);
}

.breadcrumb__sep {
    color: var(--color-text-muted);
}

/* ============================================================
   HERO SECTIONS
   ============================================================ */
.hero {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 0;
}

.hero--home {
    padding: 5rem 0;
}

.hero--hub {
    padding: var(--spacing-lg) var(--spacing-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
}

.hero--hub > .hero__content {
    flex: 1;
    max-width: 640px;
}

.hero--hub > .hero__visual {
    flex-shrink: 0;
}

.hero--hub > .container {
    flex: 1;
    max-width: var(--container-max);
}

.hero--tool {
    background: var(--color-secondary);
    padding: var(--spacing-lg) 0;
}

.hero .container,
.hero__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero--tool .container {
    display: block;
    text-align: center;
}

.hero h1,
.hero__content h1 {
    color: white;
    font-size: 2.2rem;
    margin-bottom: 1rem;
}

.hero__subtitle {
    font-size: 1.1rem;
    color: rgba(255,255,255,0.88);
    margin-bottom: 1.5rem;
    max-width: 560px;
}

.hero__ctas {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.hero__visual img {
    max-width: 420px;
    opacity: 0.92;
}

.article-hero {
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) var(--spacing-sm);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
}

.article-hero__content {
    flex: 1;
    max-width: 640px;
}

.article-hero__visual {
    flex-shrink: 0;
}

.article-hero .container,
.article-hero__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-lg);
    align-items: center;
}

.article-hero h1,
.article-hero__content h1 {
    color: var(--color-primary);
    font-size: 2rem;
}

.article-hero__badge {
    display: inline-block;
    background: var(--color-secondary);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.7rem;
    border-radius: 20px;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.article-hero__intro {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-top: 0.75rem;
}

.article-hero__visual img {
    max-width: 300px;
}

/* ============================================================
   BOUTONS
   ============================================================ */
.btn-primary, .btn-secondary, .btn-cta-primary, .btn-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 700;
    text-decoration: none;
    transition: background var(--transition), color var(--transition), transform var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--color-secondary);
    color: white;
    border-color: var(--color-secondary);
}

.btn-primary:hover {
    background: #1e5fa8;
    border-color: #1e5fa8;
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: rgba(255,255,255,0.6);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.12);
    color: white;
    text-decoration: none;
}

.btn-cta-primary {
    background: var(--color-partner);
    color: white;
    border-color: var(--color-partner);
    font-size: 1rem;
    padding: 0.9rem 2rem;
}

.btn-cta-primary:hover {
    background: #c0620d;
    border-color: #c0620d;
    color: white;
    text-decoration: none;
    transform: translateY(-1px);
}

.btn-link {
    background: none;
    color: var(--color-secondary);
    padding: 0.4rem 0;
    border: none;
    font-weight: 600;
}

.btn-link:hover {
    color: var(--color-primary);
    text-decoration: underline;
}

/* Badge gratuit */
.badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.badge--free {
    background: var(--color-accent);
    color: white;
}

/* ============================================================
   SECTIONS ACCUEIL
   ============================================================ */

/* Profils visiteurs */
.profiles {
    padding: var(--spacing-lg) 0;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

.profiles__title {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.profiles__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-sm);
}

.profile-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: var(--spacing-md);
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    text-align: center;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 600;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

.profile-card:hover {
    border-color: var(--color-secondary);
    box-shadow: var(--box-shadow);
    color: var(--color-secondary);
    text-decoration: none;
    transform: translateY(-2px);
}

.profile-card__icon {
    width: 48px;
    height: 48px;
}

/* Guides thématiques */
.themes {
    padding: var(--spacing-xl) 0;
}

.themes > .container > h2,
.tools-preview > .container > h2,
.latest-posts > .container > h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: 1.75rem;
}

.themes__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.theme-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: box-shadow var(--transition), transform var(--transition);
}

.theme-card:hover {
    box-shadow: var(--box-shadow);
    transform: translateY(-2px);
    text-decoration: none;
}

.theme-card__icon {
    width: 40px;
    height: 40px;
    margin-bottom: 0.75rem;
    color: var(--color-secondary);
}

.theme-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.theme-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    flex-grow: 1;
    margin-bottom: 0.75rem;
}

.theme-card__link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-secondary);
}

/* Outils */
.tools-preview {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-alt);
}

.tools-preview__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.tool-card {
    display: block;
    padding: var(--spacing-md);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--color-text);
    transition: box-shadow var(--transition), transform var(--transition);
}

.tool-card:hover {
    box-shadow: var(--box-shadow);
    transform: translateY(-2px);
    text-decoration: none;
}

.tool-card h3 {
    font-size: 0.95rem;
    color: var(--color-primary);
    margin-bottom: 0.4rem;
}

.tool-card p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* Derniers articles */
.latest-posts {
    padding: var(--spacing-xl) 0;
}

.posts-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.post-item {
    display: flex;
    gap: var(--spacing-sm);
    align-items: flex-start;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}

.post-item a {
    font-weight: 600;
    color: var(--color-text);
}

.post-item a:hover {
    color: var(--color-secondary);
}

.post-item__excerpt {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: 0.2rem;
}

/* ============================================================
   FAQ ACCORDÉON
   ============================================================ */
.faq {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-alt);
}

.faq > .container > h2,
.faq h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.faq__list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.faq__item {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq__question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.2rem;
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-primary);
    cursor: pointer;
    user-select: none;
    list-style: none;
}

.faq__question::after {
    content: '+';
    font-size: 1.3rem;
    font-weight: 400;
    color: var(--color-secondary);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 1rem;
}

.faq__item.open .faq__question::after {
    transform: rotate(45deg);
}

.faq__answer {
    display: none;
    padding: 0 1.2rem 1rem;
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: var(--line-height);
}

.faq__item.open .faq__answer {
    display: block;
}

/* ============================================================
   LAYOUT ARTICLE (M2)
   ============================================================ */
.article-layout {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-sm);
}

.article-body {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-lg);
    align-items: start;
    margin-top: var(--spacing-lg);
}

.article-body > * {
    min-width: 0;
}

/* Sommaire (TOC) */
.toc {
    position: sticky;
    top: 80px;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    font-size: 0.875rem;
}

.toc__title {
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.toc__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    counter-reset: toc;
}

.toc__list li::before {
    counter-increment: toc;
    content: counter(toc) ". ";
    color: var(--color-text-muted);
    font-size: 0.8rem;
}

.toc__list a {
    color: var(--color-text);
    font-size: 0.875rem;
}

.toc__list a:hover {
    color: var(--color-secondary);
}

/* Contenu article */
.article-content section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

.article-content section:last-child {
    border-bottom: none;
}

.article-content h2 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    padding-top: 0.5rem;
}

.article-content h3 {
    font-size: 1.15rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    margin-top: 1.25rem;
}

.article-content p {
    margin-bottom: 1rem;
    font-size: 1rem;
}

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

.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }

.article-content li {
    margin-bottom: 0.4rem;
    font-size: 1rem;
}

/* Callouts */
.callout {
    padding: 1rem 1.2rem;
    border-radius: var(--border-radius);
    border-left: 4px solid;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

.callout--info {
    background: #e8f4fd;
    border-color: var(--color-secondary);
    color: #1a3a5c;
}

.callout--warning {
    background: #fff8e1;
    border-color: #f39c12;
    color: #7d5200;
}

.callout--success {
    background: #eafaf1;
    border-color: var(--color-accent);
    color: #155724;
}

.callout--danger {
    background: #fdf2f2;
    border-color: #e74c3c;
    color: #7d1111;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
    margin: 1.5rem 0;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    max-width: 100%;
}

/* Tables sans .table-wrapper : rendu scrollable */
.article-content section table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

caption {
    font-weight: 700;
    color: var(--color-primary);
    padding: 0.75rem;
    text-align: left;
    background: var(--color-bg-alt);
    border-bottom: 1px solid var(--color-border);
}

th {
    background: var(--color-primary);
    color: white;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.875rem;
}

td {
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

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

tr:nth-child(even) td {
    background: var(--color-bg-alt);
}

/* Checklist */
.checklist {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.checklist__item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.5rem 0;
    font-size: 0.95rem;
}

.checklist__item::before {
    content: '';
    display: block;
    width: 20px;
    height: 20px;
    min-width: 20px;
    background: var(--color-accent);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath fill-rule='evenodd' d='M16.707 5.293a1 1 0 010 1.414l-8 8a1 1 0 01-1.414 0l-4-4a1 1 0 011.414-1.414L8 12.586l7.293-7.293a1 1 0 011.414 0z' clip-rule='evenodd'/%3E%3C/svg%3E");
    background-size: contain;
    margin-top: 2px;
}

/* Liens connexes */
.related-links {
    background: var(--color-bg-alt);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.related-links h2 {
    font-size: 1.15rem;
    margin-bottom: 0.75rem;
}

.related-links__list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.related-links__list li::before {
    content: '→ ';
    color: var(--color-secondary);
    font-weight: 700;
}

.related-links__list a {
    font-weight: 500;
}

/* Navigation articles */
.article-nav {
    display: flex;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-md);
    gap: var(--spacing-sm);
}

.article-nav__prev,
.article-nav__next {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-secondary);
}

/* ============================================================
   HUB (M3)
   ============================================================ */
.hub-intro {
    padding: var(--spacing-lg) 0;
}

.hub-intro h2 {
    margin-bottom: 1rem;
}

.hub-intro p {
    color: var(--color-text);
    max-width: 720px;
    margin-bottom: 1.5rem;
}

.hub-cards {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-alt);
}

.hub-cards h2 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.hub-cards__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.hub-card {
    display: flex;
    flex-direction: column;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    text-decoration: none;
    color: var(--color-text);
    position: relative;
    transition: box-shadow var(--transition), transform var(--transition);
}

.hub-card:hover {
    box-shadow: var(--box-shadow);
    transform: translateY(-2px);
    text-decoration: none;
}

.hub-card__badge {
    display: inline-block;
    background: var(--color-secondary);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    margin-bottom: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    align-self: flex-start;
}

.hub-card__title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.hub-card__excerpt {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    flex-grow: 1;
    margin-bottom: 0.75rem;
}

.hub-card__link {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.cross-links {
    padding: var(--spacing-xl) 0;
}

.cross-links h2 {
    margin-bottom: var(--spacing-md);
}

.cross-links__grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.cross-link-card {
    display: inline-block;
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-secondary);
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition);
}

.cross-link-card:hover {
    background: var(--color-secondary);
    color: white;
    border-color: var(--color-secondary);
    text-decoration: none;
}

/* ============================================================
   QUIZ DIAGNOSTIC (test-immatriculation-tva)
   ============================================================ */
.tool-wrapper--quiz {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 720px;
    margin: 0 auto;
}

.quiz-step { display: block; }

.quiz-step.hidden,
.quiz-result.hidden { display: none; }

.quiz-question {
    font-size: 1.05rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.quiz-btn {
    width: 100%;
    padding: 0.9rem 1.25rem;
    background: white;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-family);
    color: var(--color-text);
    cursor: pointer;
    text-align: left;
    line-height: 1.5;
    transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.quiz-btn:hover,
.quiz-btn:focus {
    border-color: var(--color-secondary);
    background: rgba(45, 125, 210, 0.06);
    color: var(--color-secondary);
    outline: none;
}

.quiz-progress {
    height: 6px;
    background: var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.quiz-progress__bar {
    height: 100%;
    background: var(--color-secondary);
    border-radius: 3px;
    transition: width 0.35s ease;
}

.result-card {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.result-card--alert {
    background: #fff8e1;
    border-color: #f39c12;
}

.result-card--oss,
.result-card--ok {
    background: #eafaf1;
    border-color: var(--color-accent);
}

.result-card--info {
    background: #e8f4fd;
    border-color: var(--color-secondary);
}

.result-title {
    font-size: 1.25rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

.result-card p { margin-bottom: 0.75rem; }
.result-card .btn-primary { margin-top: 0.75rem; }

#quiz-restart {
    align-self: flex-start;
    background: var(--color-bg-alt);
    color: var(--color-secondary);
    border: 2px solid var(--color-secondary);
    border-radius: var(--border-radius);
    padding: 0.6rem 1.25rem;
    font-weight: 700;
    font-family: var(--font-family);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

#quiz-restart:hover {
    background: var(--color-secondary);
    color: white;
}

/* ============================================================
   OUTIL (M4)
   ============================================================ */
.tool-section {
    padding: var(--spacing-xl) 0;
}

.tool-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
}

.tool-form h2,
.tool-results h2 {
    margin-bottom: var(--spacing-sm);
}

/* Formulaire */
fieldset {
    border: none;
    margin-bottom: var(--spacing-sm);
}

legend {
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.6rem 0.9rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    font-family: var(--font-family);
    color: var(--color-text);
    background: white;
    transition: border-color var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-secondary);
    box-shadow: 0 0 0 3px rgba(45,125,210,0.12);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

/* Résultats outil */
.results-table-wrapper {
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.chart-wrapper {
    margin: 1.5rem 0;
    max-width: 100%;
}

.results-disclaimer {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.tool-explanation {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg-alt);
}

.tool-explanation h2 {
    margin-bottom: 1rem;
}

.tool-explanation p {
    max-width: 720px;
    margin-bottom: var(--spacing-sm);
}

/* ============================================================
   PARTENAIRES
   ============================================================ */
.partners-table {
    background: var(--color-bg);
    padding: var(--spacing-xl) 0;
    border-top: 3px solid var(--color-border);
}

.partners-table .container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.partners-table__title {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
    text-align: center;
}

.partners-table__intro {
    text-align: center;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    font-size: 0.95rem;
}

.partners-table__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.partner-card {
    background: var(--color-bg-alt);
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.partner-card--featured {
    border-color: var(--color-partner);
    background: #fff8f2;
}

.partner-card__badge {
    display: inline-block;
    background: var(--color-partner);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.7rem;
    border-radius: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    align-self: flex-start;
}

.partner-card__name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
}

.partner-card__speciality {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.partner-card__features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex-grow: 1;
}

.partner-card__features li {
    font-size: 0.875rem;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.partner-card__features li::before {
    content: '✓';
    color: var(--color-accent);
    font-weight: 700;
    font-size: 0.8rem;
}

.partner-card__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-partner);
    color: white;
    border-radius: var(--border-radius);
    padding: 0.65rem 1.2rem;
    font-size: 0.9rem;
    font-weight: 700;
    text-decoration: none;
    transition: background var(--transition);
    margin-top: auto;
    text-align: center;
}

.partner-card__cta:hover {
    background: #c0620d;
    color: white;
    text-decoration: none;
}

/* CTA Partenaire #1 */
.cta-partner1 {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 0;
}

.cta-partner1__content {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    text-align: center;
}

.cta-partner1__content h2 {
    color: white;
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.cta-partner1__content p {
    color: rgba(255,255,255,0.85);
    font-size: 1.05rem;
    max-width: 600px;
    margin: 0 auto 1.5rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
    background: var(--color-primary);
    color: rgba(255,255,255,0.85);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-grid {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-brand img {
    height: 36px;
    margin-bottom: 0.75rem;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.7);
    margin: 0;
}

.footer-col h4 {
    color: white;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

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

.footer-col a {
    color: rgba(255,255,255,0.7);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color var(--transition);
}

.footer-col a:hover {
    color: white;
    text-decoration: none;
}

.footer-bottom {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-sm) 0;
    border-top: 1px solid rgba(255,255,255,0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.55);
    margin: 0;
}

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-sm);
}

.footer-bottom-links a {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.55);
    text-decoration: none;
}

.footer-bottom-links a:hover {
    color: white;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .themes__grid { grid-template-columns: repeat(2, 1fr); }
    .hub-cards__grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .tool-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.25rem; }

    .main-nav { display: none; }
    .main-nav.open { display: flex; }
    .menu-toggle { display: flex; }

    .main-nav.open {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-sm);
        overflow-y: auto;
        z-index: 999;
    }

    .main-nav.open .main-nav__list {
        flex-direction: column;
        width: 100%;
        gap: 0.25rem;
    }

    .main-nav.open .main-nav__item {
        width: 100%;
    }

    .main-nav.open .main-nav__link {
        padding: 0.9rem 1rem;
        font-size: 1rem;
        border-radius: var(--border-radius);
    }

    .main-nav.open .dropdown {
        position: static;
        display: none;
        box-shadow: none;
        border: none;
        padding: 0 0 0 1rem;
        background: var(--color-bg-alt);
        border-radius: 0;
    }

    .main-nav.open .main-nav__item.open .dropdown {
        display: block;
    }

    .hero .container,
    .hero__inner,
    .article-hero .container,
    .article-hero__inner {
        grid-template-columns: 1fr;
    }

    .hero__visual,
    .article-hero__visual {
        display: none;
    }

    .profiles__grid { grid-template-columns: repeat(2, 1fr); }
    .themes__grid { grid-template-columns: 1fr; }
    .tools-preview__grid { grid-template-columns: repeat(2, 1fr); }
    .hub-cards__grid { grid-template-columns: 1fr; }
    .partners-table__grid { grid-template-columns: 1fr; }

    .article-body {
        grid-template-columns: 1fr;
    }

    .toc {
        position: static;
    }

    .footer-grid { grid-template-columns: 1fr; gap: var(--spacing-md); }
    .footer-bottom { flex-direction: column; align-items: flex-start; }

    .hero__ctas { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
    .profiles__grid { grid-template-columns: 1fr; }
    .tools-preview__grid { grid-template-columns: 1fr; }
}