:root {
    --noir: #1A1A1A;
    --or: #C9A23A;
    --or-fonce: #8C6D1F;
    --parchemin: #EFE6CC;
    --gris: #8A8A8A;
    --texte-secondaire: #5F5F5F;
    --fond: #FBF8F0;
    --texte: #1A1A1A;
    --carte: #FFFFFF;
    --bord: #E2D8BC;
    --lien: #7A5C12;
    --radius: 10px;
    --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color-scheme: light;
}
/* Mode sombre : choisi par le visiteur (bouton ☀/☾, mémorisé par theme.js) */
:root[data-theme="dark"] {
    --fond: #141414;
    --texte: #ECE6D6;
    --carte: #1F1F1F;
    --bord: #3A3528;
    --lien: #E0BE5C;
    --parchemin: #2A261C;
    --texte-secondaire: #A8A8A8;
    color-scheme: dark;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 17px/1.6 var(--font); color: var(--texte); background: var(--fond); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--lien); }
h1, h2, h3 { line-height: 1.25; }
h1 { font-size: clamp(1.6rem, 4vw, 2.3rem); }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--or); color: var(--noir); padding: 8px 12px; z-index: 10; }

/* En-tête : bandeau noir avec liseré damier or */
.site-header { background: var(--noir); color: #fff; border-bottom: 6px solid transparent;
    border-image: repeating-linear-gradient(90deg, var(--or) 0 12px, var(--noir) 12px 24px) 6; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-block: 10px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; color: #fff; text-decoration: none; }
.brand strong { display: block; font-size: 1.4rem; letter-spacing: .08em; color: var(--or); }
.brand small { display: block; font-style: italic; opacity: .85; }
.main-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.main-nav a { color: #fff; text-decoration: none; padding: 8px 12px; border-radius: 6px; }
.main-nav a:hover, .main-nav a[aria-current="page"] { background: rgba(201, 162, 58, .2); color: var(--or); }
.main-nav { align-items: center; }
.theme-toggle { background: transparent; color: var(--or); border: 1px solid rgba(201, 162, 58, .5); border-radius: 999px;
    width: 38px; height: 38px; font-size: 1.15rem; line-height: 1; cursor: pointer; }
.theme-toggle:hover { background: rgba(201, 162, 58, .2); }

main { padding-block: 24px 48px; }

/* Bannière d'accueil : bandeau sombre, rangée de pièces et bord de plateau a–h */
.hero { background: var(--noir); color: #EFE6CC; border-radius: var(--radius); padding: clamp(14px, 2.5vw, 24px) clamp(16px, 4vw, 40px) 0;
    margin-bottom: 32px; text-align: center; overflow: hidden; }
:root[data-theme="dark"] .hero { box-shadow: inset 0 0 0 1px var(--bord); }
.hero h1 { margin: 0 0 10px; color: var(--or); font-family: var(--font); font-weight: 800; letter-spacing: -.02em; line-height: 1.1;
    font-size: clamp(1.9rem, 5vw, 2.9rem); }
.hero h1 .hero-ville { display: block; margin-top: 4px; color: #EFE6CC; font-size: .5em; font-weight: 600; letter-spacing: .22em; text-transform: uppercase; }
.hero .slogan { color: #EFE6CC; margin-bottom: 8px; }
.hero .hero-info p, .hero > p { margin: 0 0 10px; }
.hero .hero-info { color: #EFE6CC; }
.hero .hero-info a { color: var(--or); }
.slogan { font-style: italic; font-size: 1.15rem; margin: 0 0 16px; color: var(--lien); }
.hero-board { max-width: 520px; margin: clamp(8px, 1.5vw, 14px) auto 0; }
.hero-pieces, .hero-rank, .hero-files { display: grid; grid-template-columns: repeat(8, 1fr); }
.hero-pieces { color: var(--or); font-size: clamp(1.3rem, 3.5vw, 2rem); line-height: 1;
    font-family: "Segoe UI Symbol", "DejaVu Sans", "Noto Sans Symbols 2", serif; font-variant-emoji: text; }
.hero-rank { height: clamp(6px, 1.2vw, 10px); margin-top: 4px; }
.hero-rank span:nth-child(odd) { background: #2B2615; }
.hero-rank span:nth-child(even) { background: var(--or); }
.hero-files { font-size: .7rem; color: var(--gris); padding: 2px 0 6px; }

.btn { display: inline-block; background: var(--or); color: var(--noir); border: 2px solid var(--or); padding: 10px 18px; border-radius: 999px; font-weight: 600; text-decoration: none; cursor: pointer; font: inherit; font-weight: 600; }
.btn:hover { background: var(--or-fonce); border-color: var(--or-fonce); color: #fff; }
.btn-outline { background: transparent; color: var(--lien); }
.btn-danger { background: #A33; border-color: #A33; color: #fff; }
.btn-small { padding: 4px 10px; font-size: .9rem; }

.home-grid { display: grid; gap: 32px; }
@media (min-width: 900px) { .home-grid { grid-template-columns: 1fr 360px; } }
.sidebar { display: grid; gap: 24px; align-content: start; }
.box { background: var(--carte); border: 1px solid var(--bord); border-radius: var(--radius); padding: 20px; }
.box h2 { margin-top: 0; font-size: 1.2rem; }
.small { font-size: .85rem; color: var(--texte-secondaire); }
.une { border-top: 4px solid var(--or); }
.une-kicker { margin: 0 0 10px; font-size: .75rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--lien); }
.une-image { width: calc(100% + 40px); max-width: none; margin: 0 -20px 14px; aspect-ratio: 16 / 10; object-fit: cover; }
.une h2 { margin-bottom: 6px; }
.une p { margin: 0 0 14px; }
.une-preview { width: 240px; max-width: 100%; border-radius: 8px; margin: 4px 0 8px; }

.cards { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.card { background: var(--carte); border: 1px solid var(--bord); border-radius: var(--radius); overflow: hidden; transition: transform .15s, box-shadow .15s; }
.card:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0, 0, 0, .08); }
.card-link { display: block; color: inherit; text-decoration: none; height: 100%; }
.card img, .card-placeholder { width: 100%; aspect-ratio: 3 / 2; object-fit: cover; }
.card-placeholder { display: grid; place-items: center; font-size: 3.5rem; background: var(--parchemin); color: var(--or); }
.card-body { padding: 14px 16px 18px; }
.card-body h3 { margin: 6px 0 4px; font-size: 1.1rem; }
.card-body time { font-size: .85rem; color: var(--texte-secondaire); }
.card-body p { margin: 8px 0 0; font-size: .95rem; }
.tag { display: inline-block; font-size: .75rem; text-transform: uppercase; letter-spacing: .06em; font-weight: 700; color: var(--lien); text-decoration: none; }
.more { margin-top: 20px; }
.empty { color: var(--texte-secondaire); font-style: italic; }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }
.filters a { padding: 6px 14px; border: 1px solid var(--bord); border-radius: 999px; text-decoration: none; color: inherit; background: var(--carte); }
.filters a[aria-current="page"] { background: var(--noir); color: var(--or); border-color: var(--noir); }
.pager { display: flex; justify-content: center; align-items: center; gap: 20px; margin-top: 32px; }

.article { max-width: 760px; margin-inline: auto; }
.article-meta { color: var(--texte-secondaire); font-size: .9rem; display: flex; gap: 8px; flex-wrap: wrap; align-items: baseline; }
.prose h2 { margin-top: 1.8em; }
.prose blockquote { margin: 1em 0; padding: .5em 1em; border-left: 4px solid var(--or); background: var(--parchemin); }
.gallery { display: grid; gap: 8px; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); margin-top: 32px; }
.gallery img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 6px; }

.lightbox { border: 0; padding: 0; background: transparent; max-width: 100vw; max-height: 100vh; width: 100vw; height: 100vh; }
.lightbox::backdrop { background: rgba(0, 0, 0, .92); }
.lightbox img { max-width: 94vw; max-height: 88vh; margin: 6vh auto 0; object-fit: contain; }
.lightbox button { position: fixed; background: rgba(0, 0, 0, .5); color: #fff; border: 0; font-size: 2.2rem; width: 52px; height: 52px; border-radius: 50%; cursor: pointer; }
.lb-close { top: 12px; right: 12px; }
.lb-prev { left: 12px; top: 50%; }
.lb-next { right: 12px; top: 50%; }

.error-page { text-align: center; padding-block: 48px; }
.error-code { font-size: 4rem; font-weight: 800; color: var(--or); margin: 0; }

.site-footer { background: var(--noir); color: #ddd; padding-block: 24px; font-size: .95rem; }
.site-footer a { color: var(--or); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.site-footer p { margin: 0; }

/* ---------- Administration ---------- */
.admin main { padding-top: 24px; }
.narrow { max-width: 460px; margin: 32px auto; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 4px; font-weight: 600; }
.form input, .form select, .form textarea { font: inherit; padding: 10px 12px; border: 1px solid var(--bord); border-radius: 8px; background: var(--carte); color: var(--texte); width: 100%; }
.form input:focus, .form select:focus { outline: 3px solid rgba(201, 162, 58, .45); outline-offset: 1px; }
.form fieldset { border: 1px solid var(--bord); border-radius: 8px; display: flex; gap: 18px; flex-wrap: wrap; }
.form fieldset label { display: flex; gap: 6px; align-items: center; font-weight: 400; }
.form fieldset input { width: auto; }
.inline { display: inline; margin: 0; }
.linklike { background: none; border: 0; color: #fff; font: inherit; padding: 8px 12px; cursor: pointer; }
.linklike:hover { color: var(--or); }
.flash { padding: 10px 14px; border-radius: 8px; border: 1px solid; white-space: pre-line; }
.flash-success { background: #E8F3E4; border-color: #9BC48C; color: #22461A; }
.flash-error { background: #F8E3E1; border-color: #D9928A; color: #6A1C14; }
.flash-info { background: var(--parchemin); border-color: var(--or); color: var(--texte); }
.admin-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.table { width: 100%; border-collapse: collapse; background: var(--carte); border: 1px solid var(--bord); border-radius: var(--radius); overflow: hidden; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--bord); vertical-align: middle; }
.table th { background: var(--parchemin); font-size: .85rem; text-transform: uppercase; letter-spacing: .04em; }
@media (max-width: 640px) {
    .table thead { display: none; }
    .table tr { display: block; border-bottom: 1px solid var(--bord); padding: 8px 0; }
    .table td { display: block; border: 0; padding: 2px 12px; }
}
.status { font-size: .8rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.status-published { background: #E8F3E4; color: #22461A; }
.status-draft { background: #EEE; color: #555; }
.label { display: block; font-weight: 600; margin-bottom: 4px; }
.form textarea[data-rich-editor] { font-family: ui-monospace, monospace; }
.dropzone { border: 2px dashed var(--bord); border-radius: var(--radius); padding: 16px; text-align: center; }
.dropzone.drag { border-color: var(--or); background: var(--parchemin); }
.dropzone label.btn { display: inline-block; font-weight: 600; }
.photo-status { white-space: pre-line; min-height: 1.4em; }
.photo-status.error { color: #A33; }
.photo-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.photo-list li { position: relative; background: var(--carte); border: 1px solid var(--bord); border-radius: 8px; overflow: hidden; }
.photo-list img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.photo-tools { display: flex; justify-content: center; gap: 4px; padding: 6px; }
.cover-badge { position: absolute; top: 6px; left: 6px; background: var(--or); color: var(--noir); font-size: .75rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.danger-zone { margin-top: 32px; text-align: right; }
.row-form { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin: 0; }
.row-form input[type=text], .row-form select { font: inherit; padding: 6px 10px; border: 1px solid var(--bord); border-radius: 6px; background: var(--carte); color: var(--texte); }
.contact-form label { display: block; font-weight: 600; }
.contact-form .form-row { display: grid; gap: 14px; }
@media (min-width: 640px) { .contact-form .form-row { grid-template-columns: 1fr 1fr; } }
.contact-form .form-row > div, .contact-form > div { display: grid; gap: 4px; }
.field-error { color: #A33; font-size: .9rem; }
[aria-invalid="true"] { border-color: #A33 !important; }
.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.form-grid { display: grid; gap: 14px; }
@media (min-width: 720px) { .form-grid { grid-template-columns: 1fr 1fr; } }
.box + .box, .form .box { margin-top: 0; }
code { background: var(--parchemin); padding: 1px 6px; border-radius: 4px; }

.message-meta { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; }
.message-meta dt { font-weight: 600; }
.message-meta dd { margin: 0; }
.message-body { white-space: normal; }

.checks { list-style: none; padding: 0; line-height: 2; }

/* Contenu riche (éditeur) */
.t-petit { font-size: .85em; }
.t-grand { font-size: 1.25em; }
.t-tres-grand { font-size: 1.6em; line-height: 1.2; }
.c-or { color: var(--or-fonce); }
.c-rouge { color: #A33; }
.c-gris { color: var(--texte-secondaire); }
:root[data-theme="dark"] .c-or { color: var(--or); }
:root[data-theme="dark"] .c-rouge { color: #E07B7B; }
.a-gauche { text-align: left; }
.a-centre { text-align: center; }
.a-droite { text-align: right; }
/* L'alignement choisi l'emporte sur celui des cellules d'en-tête */
.prose :is(p, h2, h3, td, th).a-gauche { text-align: left; }
.prose :is(p, h2, h3, td, th).a-centre { text-align: center; }
.prose :is(p, h2, h3, td, th).a-droite { text-align: right; }
.prose img { max-width: 100%; height: auto; border-radius: 6px; }
.img-centre { display: block; margin: 1em auto; }
.img-gauche, .img-droite { display: block; margin: 1em auto; }
@media (min-width: 640px) {
    .img-gauche { float: left; margin: .3em 1em .6em 0; max-width: 50%; }
    .img-droite { float: right; margin: .3em 0 .6em 1em; max-width: 50%; }
}
.table-scroll { overflow-x: auto; margin: 1em 0; }
.prose table { border-collapse: collapse; width: 100%; }
.prose th, .prose td { border: 1px solid var(--bord); padding: .5em .75em; vertical-align: middle; }
.prose th { background: var(--parchemin); text-align: left; }
.prose thead th { background: var(--bord); }
/* Dans la bannière sombre de l'accueil */
.hero-info table { color: #EFE6CC; }
.hero-info th, .hero-info td { background: transparent; border-color: var(--or); color: #EFE6CC; }
.hero-info th { color: var(--or); }
.hero-info thead th { background: rgba(201, 162, 58, .15); }
.hero-info .c-or { color: var(--or); }
.hero-info .c-gris { color: #BDB6A2; }
.hero-info .c-rouge { color: #F0A0A0; }
.hero-info blockquote { background: rgba(239, 230, 204, .08); color: #EFE6CC; }
.video-yt { position: relative; aspect-ratio: 16 / 9; background: var(--noir); border-radius: 6px; margin: 1em 0; overflow: hidden; }
.video-yt iframe { width: 100%; height: 100%; border: 0; }
.video-yt-play { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: var(--or); color: var(--noir); border: 2px solid var(--or); padding: 10px 18px; border-radius: 999px; font: inherit; font-weight: 600; cursor: pointer; }
.video-yt-play:hover { background: var(--or-fonce); border-color: var(--or-fonce); color: #fff; }
/* Encart publicitaire (AdSense) */
.ad-box { min-height: 120px; }
.ad-label { margin: 0 0 8px; font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--texte-secondaire); }
.ad-box ins.adsbygoogle { min-height: 90px; }
.form label.check { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.form label.check input { width: auto; margin: 0; }
/* Aucune annonce disponible : on masque l'encart plutôt que de laisser un rectangle vide (règle recommandée par Google) */
ins.adsbygoogle[data-ad-status="unfilled"] { display: none !important; }
.ad-box:has(ins.adsbygoogle[data-ad-status="unfilled"]) { display: none; }

/* Le problème du jour */
.box-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.box-actions.even { flex-wrap: nowrap; }
.box-actions.even .btn { flex: 1 1 0; padding-left: 8px; padding-right: 8px; text-align: center; white-space: nowrap; }
.puzzle h2 { margin-bottom: 6px; }
.puzzle-status { min-height: 1.5em; margin: 0 0 10px; font-size: .88rem; font-weight: 600; }
.puzzle .box-actions { flex-wrap: nowrap; gap: 6px; }
.puzzle .box-actions .btn { flex: 1 1 auto; padding: 4px 8px; font-size: .82rem; text-align: center; white-space: nowrap; }
.puzzle-board { display: grid; grid-template-columns: repeat(8, 1fr); max-width: 420px; margin: 0 auto 12px;
    border: 3px solid var(--or-fonce); border-radius: 4px; overflow: hidden; container-type: inline-size; user-select: none; }
.puzzle-board .sq { position: relative; aspect-ratio: 1; border: 0; margin: 0; padding: 0; display: flex; align-items: center;
    justify-content: center; cursor: pointer; font: inherit; line-height: 1; }
.puzzle-board .sq.light { background: #F0E4C4; }
.puzzle-board .sq.dark { background: #B8913F; }
.puzzle-board .sq::after { content: ""; position: absolute; inset: 0; pointer-events: none; }
.puzzle-board .sq.last::after { background: rgba(255, 214, 10, .38); }
.puzzle-board .sq.sel::after { background: rgba(40, 130, 70, .5); }
.puzzle-board .sq.bad::after { background: rgba(200, 40, 40, .55); }
.puzzle-board .sq:focus-visible { outline: 3px solid var(--noir); outline-offset: -3px; z-index: 1; }
.puzzle .pc { position: relative; z-index: 1; width: 100%; height: 100%; background: center / 90% no-repeat; }
/* Pièces « cburnett » de Colin M.L. Burnett (licence BSD/GPL), reprises de Lichess.
   ?v= : à changer si les images changent (le cache de l'hébergeur garde aussi les 404). */
.puzzle .pc-wk { background-image: url(../img/pieces/wK.svg?v=2); }
.puzzle .pc-wq { background-image: url(../img/pieces/wQ.svg?v=2); }
.puzzle .pc-wr { background-image: url(../img/pieces/wR.svg?v=2); }
.puzzle .pc-wb { background-image: url(../img/pieces/wB.svg?v=2); }
.puzzle .pc-wn { background-image: url(../img/pieces/wN.svg?v=2); }
.puzzle .pc-wp { background-image: url(../img/pieces/wP.svg?v=2); }
.puzzle .pc-bk { background-image: url(../img/pieces/bK.svg?v=2); }
.puzzle .pc-bq { background-image: url(../img/pieces/bQ.svg?v=2); }
.puzzle .pc-br { background-image: url(../img/pieces/bR.svg?v=2); }
.puzzle .pc-bb { background-image: url(../img/pieces/bB.svg?v=2); }
.puzzle .pc-bn { background-image: url(../img/pieces/bN.svg?v=2); }
.puzzle .pc-bp { background-image: url(../img/pieces/bP.svg?v=2); }
.puzzle-board .coord { position: absolute; font-size: 10px; font-weight: 700; z-index: 1; }
.puzzle-board .coord-r { top: 2px; left: 3px; }
.puzzle-board .coord-f { bottom: 1px; right: 3px; }
.puzzle-board .light .coord { color: #8C6D1F; }
.puzzle-board .dark .coord { color: #F0E4C4; }
.puzzle-promo { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.puzzle-promo[hidden] { display: none; }
.puzzle-promo .pc { display: inline-block; width: 1.8rem; height: 1.8rem; vertical-align: middle; }
.puzzle-meta { margin: 0 0 12px; }
.box-actions [hidden] { display: none; }

/* Calendrier des tournois */
.tournaments { max-width: 860px; margin-inline: auto; }
.tournaments-intro { margin-bottom: 8px; }
.tournament-month { margin: 32px 0 12px; font-size: 1.1rem; text-transform: uppercase; letter-spacing: .08em; color: var(--lien); border-bottom: 2px solid var(--or); padding-bottom: 4px; }
.tournament + .tournament { margin-top: 16px; }
.tournament h3 { margin: 0; font-size: 1.2rem; }
.tournament h3 a { text-decoration: none; }
.tournament h3 a:hover { text-decoration: underline; }
.tournament-place { margin: 2px 0 12px; font-weight: 700; color: var(--texte-secondaire); letter-spacing: .03em; }
.tournament-facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
.tournament-facts dt { font-weight: 600; }
.tournament-facts dd { margin: 0; }
.tournament-comment { margin-top: 14px; padding: 12px 16px; border-left: 4px solid var(--or); background: var(--parchemin); border-radius: 0 8px 8px 0; }
.tournament-comment .une-kicker { margin-bottom: 4px; }
.tournament-comment p:last-child { margin: 0; }
.tournament-announcement { margin-top: 12px; }
.tournament-announcement summary { cursor: pointer; font-weight: 600; color: var(--lien); }
.tournament-links { display: flex; gap: 16px; flex-wrap: wrap; margin: 12px 0 0; font-size: .95rem; }
.tournament-fields { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
@media (max-width: 560px) { .tournament-facts { grid-template-columns: 1fr; } .tournament-facts dd { margin-bottom: 6px; } }

/* Partage d'un article */
.share { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 32px; padding-top: 16px; border-top: 1px solid var(--bord); }
.share-label { font-weight: 600; margin-right: 4px; }
.share-btn { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border: 1px solid var(--bord); border-radius: 999px;
    background: var(--carte); color: var(--texte); font: inherit; font-size: .95rem; text-decoration: none; cursor: pointer; }
.share-btn:hover { border-color: var(--or); color: var(--lien); }
.share-btn svg { width: 18px; height: 18px; fill: currentColor; flex: none; }
.share-facebook svg { fill: #1877F2; }
.share-whatsapp svg { fill: #25D366; }
.share-btn[hidden] { display: none; }