/* ============================================
   MAIN.CSS - Structure principale de page
   ============================================
   
   Ce fichier contient uniquement les styles spécifiques
   à la structure de layout de la page (grid, sidebar, etc.)
   
   Dépendances :
   - variables.css (pour les variables)
   - global.css (pour le reset et les styles de base)
   ============================================ */

/* ============================================
   LAYOUT GRID - Sidebar + Content
   ============================================ */

/* Base layout: single column (sans sidebar) */
body {
    display: grid;
    min-height: 100vh;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    grid-template-areas:
        "body"
        "footer";
}

/* Layout avec sidebar (deux colonnes) */
body.has-sidebar,
body:has(.sidebar-menu) {
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-areas:
        "sidebar body"
        "footer  footer";
}

/* Sidebar */
.sidebar-menu {
    grid-area: sidebar;
    position: sticky;
    top: var(--topbar-height);
    height: calc(100vh - var(--topbar-height));
    overflow-y: auto;
    z-index: 900;
}

/* Page wrapper (zone principale) */
.page-wrapper {
    grid-area: body;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow-x: hidden;
    padding-top: var(--topbar-height);
}

/* Menu hamburger (caché sur desktop) */
.menu-hamburger {
    display: none;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    max-width: var(--max-content-width);
    margin: 0 auto;
    width: 100%;
}

.main-content__container {
    background-color: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

/* ============================================
   PAGE HEADER (Reusable for all pages)
   ============================================ */

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.page-header__content {
    flex: 1;
    min-width: 200px;
}

.page-header__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin: 0 0 var(--spacing-xs);
}

.page-header__description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin: 0;
}

.page-header__actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    align-items: center;
    flex-shrink: 0;
}

/* Page header aside — info complémentaire (solde, stat, etc.) */
.page-header__aside {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.page-header__aside-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.page-header__aside-value {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 2rem;
}

.page-header__aside-value i {
    font-size: 1.5rem;
    opacity: 0.9;
}

.page-header__aside-value strong {
    font-weight: var(--font-weight-bold);
}

.page-header__aside-value span {
    font-size: var(--font-size-base);
    opacity: 0.8;
}

/* Page header centered variant (for chapter forms) */
.page-header--centered {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-header--centered .page-header__content {
    flex: none;
}

.footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-divider);
    padding: var(--spacing-xl);
    margin-top: auto;
}

.footer__container {
    max-width: var(--max-content-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer__text {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
}

.footer__links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer__link {
    color: var(--color-text-light);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
}

.footer__link:hover {
    color: var(--color-primary);
}

/* ============================================
   RESPONSIVE - INTERMEDIATE (Sidebar réduite)
   ============================================ */

@media (min-width: 769px) and (max-width: 1200px) {
    /* Colonne sidebar réduite dans la grille */
    body.has-sidebar,
    body:has(.sidebar-menu) {
        grid-template-columns: var(--sidebar-collapsed-width, 72px) 1fr;
    }

    /* Sidebar en position fixe pour overlayer le contenu à l'expansion */
    .sidebar-menu {
        position: fixed;
        top: 0;
        left: 0;
        height: 100vh;
        overflow-y: auto;
        z-index: 1000;
    }
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */

@media (max-width: 768px) {
    /* Layout simple sur mobile */
    body {
        display: block;
    }
    
    /* Sidebar en overlay */
    .sidebar-menu {
        position: fixed;
        top: 0;
        left: calc(-1 * var(--sidebar-width));
        width: var(--sidebar-width);
        height: 100vh;
        transition: left var(--transition-slow);
        z-index: 1000;
    }
    
    /* Menu ouvert */
    #menu-337f8e72:checked ~ .sidebar-menu,
    [id^="menu-"]:checked ~ .sidebar-menu {
        left: 0;
    }
    
    /* Overlay visible */
    #menu-337f8e72:checked ~ .sidebar-menu .menu__overlay,
    [id^="menu-"]:checked ~ .sidebar-menu .menu__overlay {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }
    
    /* Page wrapper pleine largeur */
    .page-wrapper {
        width: 100%;
        padding-top: 0;
    }
    
    /* Afficher le hamburger */
    .menu-hamburger {
        display: flex;
    }
    
    /* Ajustements de padding */
    .main-content {
        padding: var(--spacing-md);
    }
    
    .main-content__container {
        padding: var(--spacing-lg);
    }
    
    .footer__container {
        flex-direction: column;
        text-align: center;
    }
    
    .footer__links {
        justify-content: center;
    }

    /* Page header - responsive */
    .page-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .page-header__actions {
        width: 100%;
        justify-content: flex-start;
    }

    .page-header__aside {
        align-items: center;
        width: 100%;
    }

    .page-header__aside-value {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .main-content__container {
        padding: var(--spacing-md);
    }
}

/* ============================================
   SECTION CONTEXT - Info contextuelle
   ============================================ */

.section-context {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--color-bg-subtle, #f8f9fa);
    border-radius: var(--border-radius-md);
}

.context-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.context-item__icon {
    color: var(--color-primary);
    font-size: var(--font-size-xs);
}

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

.context-item .link {
    font-weight: var(--font-weight-medium);
}