/* ---------------------------------------------------------------
   Essai « Estuaire » : éditorial et calme.
   Papier, vert mousse, beaucoup d'air, des capitales à empattements.
   --------------------------------------------------------------- */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..700;1,9..144,300..700&family=Source+Sans+3:wght@400;600&display=swap");

:root {
    --papier: #f5f1e8;
    --papier-fonce: #ebe5d6;
    --encre: #1d2b27;
    --doux: #5d6b65;
    --mousse: #2f5d50;
    --mousse-clair: #dfe9e2;
    --accent: #c8553d;
    --filet: rgba(29, 43, 39, .15);
    --serif: "Fraunces", Georgia, serif;
    --sans: "Source Sans 3", system-ui, sans-serif;
    --largeur: 1120px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --papier: #131b19;
        --papier-fonce: #1a2421;
        --encre: #e9e4d8;
        --doux: #9fada6;
        --mousse: #8cc7a9;
        --mousse-clair: #1f2f2a;
        --accent: #f08a6c;
        --filet: rgba(233, 228, 216, .14);
    }
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--papier);
    color: var(--encre);
    font: 18px/1.65 var(--sans);
}

a {
    color: var(--mousse);
}

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

.saut {
    position: absolute;
    left: -9999px;
}

.saut:focus {
    left: 16px;
    top: 16px;
    z-index: 10;
    background: var(--encre);
    color: var(--papier);
    padding: 8px 12px;
}

.bloc {
    scroll-margin-top: 70px;
}

/* --- Navigation --- */

.site-nav {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 14px max(16px, calc((100% - var(--largeur)) / 2));
    background: color-mix(in srgb, var(--papier) 88%, transparent);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid var(--filet);
}

.marque {
    font: italic 600 1.4rem var(--serif);
    color: var(--encre);
    text-decoration: none;
}

.nav-liens {
    display: flex;
    gap: 22px;
    margin: 0 0 0 auto;
    padding: 0;
    list-style: none;
}

.nav-liens a {
    white-space: nowrap;
    color: var(--doux);
    text-decoration: none;
    font-size: .95rem;
}

.nav-liens a:hover {
    color: var(--encre);
}

.nav-action {
    padding: 6px 14px;
    border: 1px solid var(--encre);
    border-radius: 999px;
    color: var(--encre);
    text-decoration: none;
    font-size: .9rem;
}

.nav-action:hover {
    background: var(--encre);
    color: var(--papier);
}

/* --- Hero --- */

.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 64px;
    align-items: center;
    max-width: var(--largeur);
    margin: 0 auto;
    padding: 80px 16px 96px;
}

.hero-surtitre {
    margin: 0 0 12px;
    color: var(--accent);
    font-size: .85rem;
    font-weight: 600;
    letter-spacing: .18em;
    text-transform: uppercase;
}

.hero-titre {
    margin: 0;
    font: 300 clamp(3.2rem, 9vw, 6.5rem)/1 var(--serif);
    letter-spacing: -.02em;
}

.hero-intro {
    max-width: 34ch;
    margin: 24px 0 32px;
    color: var(--doux);
    font-size: 1.15rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.hero-visuel {
    margin: 0;
}

.hero-visuel img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 999px 999px 8px 8px;
}

.hero-visuel figcaption {
    margin-top: 12px;
    color: var(--doux);
    font: italic .95rem var(--serif);
    text-align: center;
}

/* --- Boutons --- */

.page-contenu .btn,
.bouton {
    display: inline-block;
    padding: 12px 22px;
    border: 1px solid var(--mousse);
    border-radius: 999px;
    background: var(--mousse);
    color: var(--papier);
    font: 600 1rem var(--sans);
    text-decoration: none;
    cursor: pointer;
}

.page-contenu .btn:hover,
.bouton:hover {
    filter: brightness(1.1);
}

.bouton-discret {
    background: transparent;
    color: var(--mousse);
}

/* --- Blocs --- */

.bloc {
    max-width: var(--largeur);
    margin: 0 auto;
    padding: 72px 16px;
    border-top: 1px solid var(--filet);
}

.bloc-entete {
    display: grid;
    grid-template-columns: auto 1fr;
    column-gap: 20px;
    align-items: baseline;
    margin-bottom: 40px;
}

.bloc-numero {
    color: var(--accent);
    font: italic 1.1rem var(--serif);
}

.bloc-numero::after {
    content: " —";
}

.bloc-entete h2 {
    margin: 0;
    font: 400 clamp(2rem, 5vw, 2.8rem)/1.1 var(--serif);
}

.bloc-chapo {
    grid-column: 2;
    margin: 8px 0 0;
    color: var(--doux);
}

/* Articles : pas de boîtes, juste des filets */
.page-contenu .grid,
.grille-articles {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
    gap: 40px 48px;
}

.page-contenu .item,
.carte-article {
    padding-top: 18px;
    border-top: 2px solid var(--encre);
}

.carte-meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    color: var(--doux);
    font-size: .8rem;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.carte-article h3 {
    margin: 10px 0 8px;
    font: 500 1.5rem/1.2 var(--serif);
}

.carte-article h3 a {
    color: var(--encre);
    text-decoration: none;
}

.carte-article h3 a:hover {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 4px;
}

.carte-article p {
    margin: 0 0 12px;
    color: var(--doux);
}

.carte-lien {
    font-weight: 600;
    text-decoration: none;
}

/* Pages : une liste façon sommaire */
.grille-pages {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 460px), 1fr));
    column-gap: 48px;
}

.tuile-page {
    display: grid;
    grid-template-columns: 2.4rem 1fr auto;
    column-gap: 14px;
    align-items: baseline;
    padding: 18px 0;
    border-bottom: 1px solid var(--filet);
    color: var(--encre);
    text-decoration: none;
}

.tuile-page::after {
    content: "→";
    grid-column: 3;
    grid-row: 1 / span 2;
    align-self: center;
    color: var(--accent);
    transition: transform .2s;
}

.tuile-page:hover::after {
    transform: translateX(6px);
}

.tuile-icone {
    grid-row: 1 / span 2;
    font-size: 1.6rem;
}

.tuile-page strong {
    font: 500 1.25rem var(--serif);
}

.tuile-texte {
    grid-column: 2;
    color: var(--doux);
    font-size: .95rem;
}

/* À propos */
.colonnes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 48px;
    margin-bottom: 32px;
}

.colonne h3 {
    margin: 0 0 8px;
    font: 500 1.4rem var(--serif);
}

.colonne p {
    margin: 0;
}

.colonne p::first-letter {
    float: left;
    margin: 6px 8px 0 0;
    color: var(--mousse);
    font: 3.4rem/.8 var(--serif);
}

/* Contact : des champs soulignés */
.formulaire {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px 40px;
    max-width: 760px;
}

.champ-large,
.formulaire-note {
    grid-column: 1 / -1;
}

.page-contenu .form-label,
.champ label {
    display: block;
    color: var(--doux);
    font-size: .85rem;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.page-contenu .form-control,
.champ input,
.champ textarea {
    width: 100%;
    padding: 8px 0;
    border: 0;
    border-bottom: 1px solid var(--encre);
    background: transparent;
    color: var(--encre);
    font: 1.1rem var(--sans);
}

.page-contenu .form-control:focus,
.champ input:focus,
.champ textarea:focus {
    outline: none;
    border-bottom: 2px solid var(--mousse);
}

.formulaire .bouton {
    justify-self: start;
}

.formulaire-note,
.vide {
    color: var(--doux);
    font-style: italic;
}

/* --- Pied de page --- */

.site-pied {
    margin-top: 48px;
    padding: 56px max(16px, calc((100% - var(--largeur)) / 2)) 24px;
    background: var(--mousse);
    color: var(--papier);
}

@media (prefers-color-scheme: dark) {
    .site-pied {
        background: var(--mousse-clair);
        color: var(--encre);
    }
}

.site-pied a {
    color: inherit;
}

.pied-colonnes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 32px;
}

.pied-colonnes h4 {
    margin: 0 0 8px;
    font: italic 400 1.2rem var(--serif);
}

.pied-colonnes p {
    margin: 0;
}

.reseaux {
    display: flex;
    gap: 14px;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 1.5rem;
}

.pied-copyright {
    margin: 40px 0 0;
    padding-top: 16px;
    border-top: 1px solid color-mix(in srgb, currentColor 25%, transparent);
    font-size: .85rem;
    opacity: .8;
}

/* --- Les vraies pages du site, vues à travers le labo ---
   (list.php, article.php, newArticle.php...) Leur HTML n'est pas fait
   pour le labo : on habille leurs balises et les quelques classes
   Bootstrap qu'elles utilisent. Les boutons, champs et cartes
   partagent les règles plus haut (.page-contenu .btn, .form-control,
   .item...). */

.page-contenu {
    max-width: var(--largeur);
    margin: 0 auto;
    padding: 64px 16px 96px;
}

.page-contenu h1 {
    max-width: 22ch;
    margin: 0 0 40px;
    font: 300 clamp(2.2rem, 6vw, 3.6rem)/1.1 var(--serif);
}

.page-contenu h1 i {
    margin-right: .4em;
    color: var(--accent);
    font-size: .5em;
    vertical-align: middle;
}

.page-contenu > h2 {
    max-width: 24ch;
    margin: 0 0 24px;
    font: 400 clamp(2rem, 5vw, 3rem)/1.1 var(--serif);
}

.page-contenu > p {
    max-width: 65ch;
    margin: 0 0 1.2em;
}

.page-contenu .item .image {
    display: none;
}

.page-contenu .item h2 {
    margin: 0 0 8px;
    font: 500 1.5rem/1.2 var(--serif);
}

.page-contenu .item p {
    margin: 0 0 12px;
    color: var(--doux);
}

.page-contenu .item a {
    font-weight: 600;
    text-decoration: none;
}

.page-contenu .item a i {
    margin-right: 6px;
}

.page-contenu form {
    max-width: 680px;
}

.page-contenu .mb-3 {
    margin-bottom: 28px;
}

.page-contenu textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.page-contenu select.form-control option {
    background: var(--papier);
    color: var(--encre);
}

.page-contenu .alert {
    max-width: 680px;
    margin: 0 0 32px;
    padding: 14px 18px;
    border-left: 3px solid var(--mousse);
    background: var(--mousse-clair);
}

.page-contenu .alert-danger {
    border-left-color: var(--accent);
}

/* --- Petits écrans --- */

@media (max-width: 800px) {
    .site-nav {
        flex-wrap: wrap;
        gap: 8px 16px;
    }

    .nav-liens {
        order: 3;
        width: 100%;
        margin: 0;
        overflow-x: auto;
    }

    .nav-action {
        margin-left: auto;
    }

    .hero {
        grid-template-columns: 1fr;
        gap: 40px;
        padding: 48px 16px 64px;
    }

    .hero-visuel img {
        aspect-ratio: 4 / 3;
        border-radius: 200px 200px 8px 8px;
    }

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