/* ============================================
   changementdadresse.fr - Feuille de styles
   ============================================ */

/* --- Variables --- */
:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #eff6ff;
    --color-secondary: #059669;
    --color-text: #1e293b;
    --color-text-light: #64748b;
    --color-bg: #ffffff;
    --color-bg-alt: #f8fafc;
    --color-border: #e2e8f0;
    --color-border-dark: #cbd5e1;
    --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-heading: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --max-width: 1140px;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

/* --- Skip link --- */
.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: var(--color-primary);
    color: #fff;
    padding: 0.5rem 1rem;
    z-index: 1000;
    border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus {
    left: 0;
}

/* --- Container --- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.site-logo {
    font-size: 1.25rem;
    color: var(--color-text);
    text-decoration: none;
}
.site-logo strong { color: var(--color-primary); }
.site-logo span { color: var(--color-text-light); }

/* Nav */
.main-nav ul {
    display: flex;
    gap: 0.25rem;
}
.main-nav a {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--color-text);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: var(--radius);
    transition: background 0.15s, color 0.15s;
}
.main-nav a:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
    text-decoration: none;
}

/* Menu toggle mobile */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 5px;
}
.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform 0.2s;
}

@media (max-width: 768px) {
    .menu-toggle { display: flex; }
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
        padding: 1rem;
    }
    .main-nav.is-open { display: block; }
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    .main-nav a {
        padding: 0.75rem 1rem;
        font-size: 1rem;
    }
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.site-main {
    padding: 2rem 0 3rem;
    min-height: 60vh;
}

/* --- Breadcrumb --- */
.breadcrumb {
    margin-bottom: 1.5rem;
    font-size: 0.85rem;
    color: var(--color-text-light);
}
.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
}
.breadcrumb li::after {
    content: "›";
    margin-left: 0.4rem;
    color: var(--color-border-dark);
}
.breadcrumb li:last-child::after { content: none; }
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-primary); }

/* --- Headings --- */
h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: 1rem;
}
h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text);
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}
h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 1.75rem;
    margin-bottom: 0.5rem;
}

/* --- Intro --- */
.intro {
    font-size: 1.15rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* --- Sommaire --- */
.sommaire {
    background: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 2rem;
}
.sommaire__title {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}
.sommaire ol {
    list-style: decimal;
    padding-left: 1.25rem;
}
.sommaire li {
    margin-bottom: 0.25rem;
    font-size: 0.92rem;
}

/* --- Article content --- */
.article-content p {
    margin-bottom: 1rem;
}
.article-content ul,
.article-content ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li {
    margin-bottom: 0.4rem;
}

/* --- CTA Box --- */
.cta-box {
    background: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 1.25rem 1.5rem;
    margin: 2rem 0;
}
.cta-box p { margin-bottom: 0.5rem; }
.cta-box strong { color: var(--color-primary-dark); }

/* --- Info Box --- */
.info-box {
    background: #f0fdf4;
    border-left: 4px solid var(--color-secondary);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

/* --- Warning Box --- */
.warning-box {
    background: #fffbeb;
    border-left: 4px solid #f59e0b;
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
}

/* ============================================
   CARDS (Hub pages)
   ============================================ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
    margin: 2rem 0;
}
.card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: box-shadow 0.15s, border-color 0.15s;
}
.card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}
.card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.card__title a {
    color: var(--color-text);
}
.card__title a:hover {
    color: var(--color-primary);
    text-decoration: none;
}
.card__desc {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 0.75rem;
}
.card__link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* ============================================
   TABLE CHECKLIST
   ============================================ */
.table-wrapper {
    overflow-x: auto;
    margin: 1.5rem 0;
}
.checklist-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}
.checklist-table th,
.checklist-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}
.checklist-table thead th {
    background: var(--color-bg-alt);
    font-weight: 700;
    color: var(--color-text);
    white-space: nowrap;
}
.checklist-table tbody tr:hover {
    background: var(--color-primary-light);
}

/* ============================================
   FAQ
   ============================================ */
.faq {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}
.faq h2 {
    margin-top: 0;
}
.faq__item {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    margin-bottom: 0.75rem;
    overflow: hidden;
}
.faq__item summary {
    padding: 1rem 1.25rem;
    font-weight: 600;
    cursor: pointer;
    background: var(--color-bg-alt);
    transition: background 0.15s;
    list-style: none;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::before {
    content: "+";
    display: inline-block;
    width: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
}
.faq__item[open] summary::before { content: "−"; }
.faq__item[open] summary {
    border-bottom: 1px solid var(--color-border);
}
.faq__answer {
    padding: 1rem 1.25rem;
}

/* ============================================
   RELATED LINKS
   ============================================ */
.related-links {
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    margin: 2rem 0;
}
.related-links h3 {
    font-size: 1rem;
    margin-top: 0;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}
.related-links ul {
    list-style: none;
}
.related-links li {
    padding: 0.3rem 0;
}
.related-links li::before {
    content: "→ ";
    color: var(--color-primary);
    font-weight: 600;
}

/* ============================================
   HERO (Home)
   ============================================ */
.hero {
    text-align: center;
    padding: 3rem 0 2rem;
}
.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.hero .intro {
    max-width: 640px;
    margin: 0 auto 2rem;
}
.hero-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 1.5rem;
}
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    transition: background 0.15s, transform 0.1s;
    text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}
.btn-outline:hover {
    background: var(--color-primary-light);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
    font-size: 0.9rem;
    color: var(--color-text-light);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-brand {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}
.footer-brand strong { color: var(--color-primary); }
.footer-col h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: 0.75rem;
}
.footer-col li { margin-bottom: 0.4rem; }
.footer-col a {
    color: var(--color-text-light);
}
.footer-col a:hover { color: var(--color-primary); }
.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .hero h1 { font-size: 1.75rem; }
    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.3rem; }
}

/* --- Print --- */
@media print {
    .site-header, .site-footer, .menu-toggle, .skip-link { display: none; }
    .site-main { padding: 0; }
    body { font-size: 12pt; line-height: 1.5; }
    a { color: #000; text-decoration: underline; }
    a[href]::after { content: " (" attr(href) ")"; font-size: 0.8em; }
}