/* Mise en valeur des landmarks HTML5 */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family:
        system-ui,
        -apple-system,
        sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header - bleu - MOBILE FIRST */
header {
    background: #3498db;
    color: white;
    padding: 0.75rem;
    border: 3px solid #2980b9;
}

header h1 {
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* Tablette et plus - header */
@media (min-width: 768px) {
    header {
        padding: 1rem;
    }

    header h1 {
        font-size: 1.5rem;
    }
}

/* Desktop - header */
@media (min-width: 1024px) {
    header h1 {
        font-size: 1.75rem;
    }
}

/* Navigation principale - bleu foncé - MOBILE FIRST */
nav[aria-label="Principale"] {
    background: #2c3e50;
    padding: 0.5rem;
}

nav[aria-label="Principale"] ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

nav[aria-label="Principale"] a {
    color: white;
    text-decoration: none;
    padding: 0.75rem 1rem;
    display: block;
    border-radius: 4px;
    text-align: center;
}

nav[aria-label="Principale"] a:hover {
    background: #34495e;
}

/* Navigation - Tablette et plus */
@media (min-width: 768px) {
    nav[aria-label="Principale"] ul {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    nav[aria-label="Principale"] a {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
}

/* Navigation - Desktop */
@media (min-width: 1024px) {
    nav[aria-label="Principale"] ul {
        gap: 1rem;
    }

    nav[aria-label="Principale"] a {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
}

/* Main - blanc/gris clair - MOBILE FIRST */
main {
    background: #ecf0f1;
    padding: 1rem;
    border: 3px solid #bdc3c7;
    min-height: 300px;
}

main h1 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

/* Tablette et plus - main */
@media (min-width: 768px) {
    main {
        padding: 1.5rem;
        min-height: 400px;
    }

    main h1 {
        font-size: 2rem;
    }
}

/* Desktop - main */
@media (min-width: 1024px) {
    main {
        padding: 2rem;
    }
}

/* Section - vert clair - MOBILE FIRST */
section {
    background: #d4edda;
    border: 3px solid #28a745;
    padding: 1rem;
    margin-bottom: 1rem;
}

section h2 {
    color: #155724;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

/* Tablette et plus - section */
@media (min-width: 768px) {
    section {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }

    section h2 {
        font-size: 1.5rem;
    }
}

/* Article - jaune clair - MOBILE FIRST */
article {
    background: #fff3cd;
    border: 3px solid #ffc107;
    padding: 1rem;
    margin-bottom: 1rem;
}

article h2 {
    color: #856404;
    margin-bottom: 0.5rem;
    font-size: 1.25rem;
}

article header {
    background: #ffc107;
    color: #333;
    border: 2px solid #e0a800;
    margin-bottom: 1rem;
}

article footer {
    background: #ffe69c;
    color: #333;
    border: 2px solid #ffc107;
    margin-top: 1rem;
    font-style: italic;
}

/* Tablette et plus - article */
@media (min-width: 768px) {
    article {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }

    article h2 {
        font-size: 1.5rem;
    }
}

/* Aside - orange clair - MOBILE FIRST */
aside {
    background: #ffe5cc;
    border: 3px solid #fd7e14;
    padding: 1rem;
}

aside h3 {
    color: #d63384;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Tablette et plus - aside */
@media (min-width: 768px) {
    aside {
        padding: 1.5rem;
    }

    aside h3 {
        font-size: 1.25rem;
    }
}

/* Footer - gris foncé */
footer {
    background: #6c757d;
    color: white;
    padding: 1rem;
    border: 3px solid #495057;
}

footer a {
    color: #f8f9fa;
}

/* Navigation secondaire */
nav[aria-label="Table des matières"] ul,
nav[aria-label="Liens légaux et informations"] ul {
    list-style: none;
}

nav[aria-label="Table des matières"] li,
nav[aria-label="Liens légaux et informations"] li {
    margin-bottom: 0.5rem;
}

nav[aria-label="Liens légaux et informations"] ul {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Layouts - MOBILE FIRST */

/* Layout classique */
.layout-classic {
    display: grid;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem;
}

/* Layout avec sidebar gauche - MOBILE FIRST */
.layout-left-sidebar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem;
}

.layout-left-sidebar header {
    grid-column: 1;
}

.layout-left-sidebar aside {
    grid-column: 1;
}

.layout-left-sidebar main {
    grid-column: 1;
}

.layout-left-sidebar > footer {
    grid-column: 1;
}

/* Tablette et plus - sidebar gauche */
@media (min-width: 768px) {
    .layout-left-sidebar {
        grid-template-columns: 250px 1fr;
        padding: 1rem;
    }

    .layout-left-sidebar header {
        grid-column: 1 / -1;
    }

    .layout-left-sidebar aside {
        grid-column: 1;
        grid-row: 2;
    }

    .layout-left-sidebar main {
        grid-column: 2;
        grid-row: 2;
    }

    .layout-left-sidebar > footer {
        grid-column: 1 / -1;
    }
}

/* Layout avec sidebar droite - MOBILE FIRST */
.layout-right-sidebar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem;
}

.layout-right-sidebar header {
    grid-column: 1;
}

.layout-right-sidebar main {
    grid-column: 1;
}

.layout-right-sidebar aside {
    grid-column: 1;
}

.layout-right-sidebar > footer {
    grid-column: 1;
}

/* Tablette et plus - sidebar droite */
@media (min-width: 768px) {
    .layout-right-sidebar {
        grid-template-columns: 1fr 250px;
        padding: 1rem;
    }

    .layout-right-sidebar header {
        grid-column: 1 / -1;
    }

    .layout-right-sidebar main {
        grid-column: 1;
        grid-row: 2;
    }

    .layout-right-sidebar aside {
        grid-column: 2;
        grid-row: 2;
    }

    .layout-right-sidebar > footer {
        grid-column: 1 / -1;
    }
}

/* Layout avec deux sidebars - MOBILE FIRST */
.layout-two-sidebars {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem;
}

.layout-two-sidebars header {
    grid-column: 1;
}

.layout-two-sidebars aside:first-of-type {
    grid-column: 1;
}

.layout-two-sidebars main {
    grid-column: 1;
}

.layout-two-sidebars aside:last-of-type {
    grid-column: 1;
}

.layout-two-sidebars > footer {
    grid-column: 1;
}

/* Tablette - une sidebar */
@media (min-width: 768px) {
    .layout-two-sidebars {
        grid-template-columns: 200px 1fr;
        padding: 1rem;
    }

    .layout-two-sidebars header {
        grid-column: 1 / -1;
    }

    .layout-two-sidebars aside:first-of-type {
        grid-column: 1;
        grid-row: 2;
    }

    .layout-two-sidebars main {
        grid-column: 2;
        grid-row: 2 / 4;
    }

    .layout-two-sidebars aside:last-of-type {
        grid-column: 1;
        grid-row: 3;
    }

    .layout-two-sidebars > footer {
        grid-column: 1 / -1;
    }
}

/* Desktop - deux sidebars */
@media (min-width: 1024px) {
    .layout-two-sidebars {
        grid-template-columns: 200px 1fr 200px;
    }

    .layout-two-sidebars aside:first-of-type {
        grid-column: 1;
        grid-row: 2;
    }

    .layout-two-sidebars main {
        grid-column: 2;
        grid-row: 2;
    }

    .layout-two-sidebars aside:last-of-type {
        grid-column: 3;
        grid-row: 2;
    }
}

/* Layout Grid - MOBILE FIRST */
.layout-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem;
}

.layout-grid main {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

/* Tablette */
@media (min-width: 768px) {
    .layout-grid {
        padding: 1rem;
    }

    .layout-grid main {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
}

/* Layout Dashboard - MOBILE FIRST */
.layout-dashboard {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
    padding: 0.5rem;
}

.layout-dashboard header {
    grid-column: 1;
}

.layout-dashboard aside {
    grid-column: 1;
}

.layout-dashboard main {
    grid-column: 1;
}

.layout-dashboard main section {
    display: block;
    width: 100%;
    margin-bottom: 1.5rem;
}

.layout-dashboard > footer {
    grid-column: 1;
}

/* Tablette et plus - dashboard */
@media (min-width: 768px) {
    .layout-dashboard {
        grid-template-columns: 200px 1fr;
        grid-template-rows: auto 1fr auto;
        padding: 1rem;
    }

    .layout-dashboard header {
        grid-column: 1 / -1;
    }

    .layout-dashboard aside {
        grid-column: 1;
        grid-row: 2;
    }

    .layout-dashboard main {
        grid-column: 2;
        grid-row: 2;
    }

    .layout-dashboard main section {
        display: inline-block;
        width: calc(50% - 0.75rem);
        margin-right: 1.5rem;
        vertical-align: top;
    }

    .layout-dashboard main section:nth-child(2n) {
        margin-right: 0;
    }

    .layout-dashboard > footer {
        grid-column: 1 / -1;
    }
}

/* Layout Article/Blog - MOBILE FIRST */
.layout-article {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0.5rem;
}

.layout-article header {
    grid-column: 1;
}

.layout-article main {
    grid-column: 1;
}

.layout-article aside {
    grid-column: 1;
}

.layout-article > footer {
    grid-column: 1;
}

/* Tablette et plus - article */
@media (min-width: 768px) {
    .layout-article {
        grid-template-columns: 1fr 300px;
        padding: 1rem;
    }

    .layout-article header {
        grid-column: 1 / -1;
    }

    .layout-article main {
        grid-column: 1;
    }

    .layout-article aside {
        grid-column: 2;
        grid-row: 2;
    }

    .layout-article > footer {
        grid-column: 1 / -1;
    }
}

/* Utilitaires */
p {
    margin-bottom: 1rem;
}

h1,
h2,
h3,
h4 {
    line-height: 1.2;
}

a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

time {
    color: #6c757d;
}