/* site.css : letopweb.biz, jeux de calcul.
 * Les couleurs viennent de config.php (variables --encre, --plateau…, injectées dans chaque page).
 * Fond « cahier à petits carreaux », plateaux de jeu francs, gros boutons pour les doigts. */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:12px}
body{margin:0;color:var(--encre);background-color:var(--papier);
  background-image:linear-gradient(var(--quadrillage) 1px,transparent 1px),linear-gradient(90deg,var(--quadrillage) 1px,transparent 1px);
  background-size:22px 22px;background-position:-1px -1px;
  font:17px/1.6 "Trebuchet MS","Avenir Next",Avenir,"Segoe UI",Roboto,system-ui,sans-serif;
  padding-bottom:env(safe-area-inset-bottom,0px)}
img,svg{max-width:100%}
a{color:var(--plateau-fonce);text-underline-offset:2px}
a:hover{color:var(--plateau)}
h1,h2,h3{line-height:1.2;font-weight:800;letter-spacing:-.01em;margin:1.6em 0 .5em}
h1{font-size:clamp(1.9rem,4.6vw,2.9rem);margin-top:.2em}
h2{font-size:clamp(1.35rem,2.8vw,1.7rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
:focus-visible{outline:3px solid var(--jaune);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 14px;z-index:99}
.skip:focus{left:8px;top:8px}
.hors-ecran{position:fixed;left:-9999px;top:0}
.wrap{max-width:1100px;margin:0 auto;padding:0 18px}
.narrow{max-width:780px}
.lead{font-size:1.15rem;max-width:62ch}
.note{color:var(--gris);font-size:.95rem}
[hidden]{display:none!important}

/* ---------- boutons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4em;min-height:48px;padding:.55em 1.15em;border-radius:14px;
  border:2px solid var(--encre);background:#fff;color:var(--encre);font:inherit;font-weight:700;text-decoration:none;cursor:pointer;
  box-shadow:0 3px 0 var(--encre);transition:transform .08s,box-shadow .08s}
.btn:hover{color:var(--encre);background:#f2f5ff}
.btn:active{transform:translateY(3px);box-shadow:0 0 0 var(--encre)}
.btn.jaune{background:var(--jaune)}
.btn.jaune:hover{background:#ffd25c}
.btn.small{min-height:40px;padding:.35em .9em;font-size:.95rem;border-radius:11px}
.btn:disabled{opacity:.45;cursor:default;transform:none;box-shadow:0 3px 0 var(--encre)}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin:1.2em 0}

/* ---------- en-tête ---------- */
.top{background:#fff;border-bottom:3px solid var(--encre);padding-top:env(safe-area-inset-top,0px)}
.top-in{max-width:1100px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--encre);margin-right:auto}
.logo span{display:flex;flex-direction:column;line-height:1.1}
.logo strong{font-size:1.3rem;font-weight:800}
.logo em{font-style:normal;color:var(--gris);font-size:.92rem}
.tabs{display:flex;gap:8px;flex-wrap:wrap}
.tab{padding:.45em .9em;border-radius:12px;text-decoration:none;font-weight:700;color:var(--encre);border:2px solid transparent;min-height:44px;display:inline-flex;align-items:center}
.tab:hover{border-color:var(--quadrillage);color:var(--encre)}
.tab[aria-current]{background:var(--encre);color:#fff}
.tab-plateau[aria-current]{background:var(--plateau)}
.tab-mer[aria-current]{background:var(--mer)}
.tab-rouge[aria-current]{background:var(--rouge)}
.levels-bar{max-width:1100px;margin:0 auto;padding:0 18px 8px;display:flex;gap:6px;align-items:center;flex-wrap:wrap;font-size:.95rem}
.levels-bar span{color:var(--gris);margin-right:4px}
.levels-bar a{padding:.15em .6em;border-radius:8px;text-decoration:none;font-weight:700;border:1.5px solid var(--quadrillage);background:#fff;min-height:34px;display:inline-flex;align-items:center}
.levels-bar a[aria-current]{background:var(--plateau);border-color:var(--plateau);color:#fff}

/* ---------- accueil ---------- */
.hero{padding:34px 0 10px}
.hero-in{max-width:1100px;margin:0 auto;padding:0 18px;display:grid;gap:28px;align-items:center}
@media (min-width:860px){.hero-in{grid-template-columns:1.1fr .9fr}}
.hero h1{font-size:clamp(2.2rem,5.6vw,3.6rem);line-height:1.05;margin:0 0 .4em}
.hero .meta{color:var(--gris)}
.hero-art{position:relative;max-width:440px;margin:0 auto;width:100%}
.hero-board{display:block;width:100%;height:auto;filter:drop-shadow(0 8px 0 var(--plateau-fonce))}
.hero-q{position:absolute;left:-6px;top:-16px;margin:0;background:#fff;border:3px solid var(--encre);border-radius:16px;padding:.25em .7em;font-size:1.6rem;font-weight:800;font-variant-numeric:tabular-nums;transform:rotate(-4deg);box-shadow:0 4px 0 var(--encre)}
.hero-q span{color:var(--vert)}
.drop{animation:tombe var(--t,.45s) cubic-bezier(.5,0,1,.6) var(--d,0s) both}
@keyframes tombe{from{transform:translateY(var(--h,-300px))}to{transform:translateY(0)}}

.game-cards{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin:12px 0 8px}
.game-card{display:flex;gap:16px;align-items:flex-start;padding:16px;background:#fff;border:2px solid var(--encre);border-radius:18px;text-decoration:none;color:var(--encre);box-shadow:0 4px 0 var(--encre)}
.game-card:hover{color:var(--encre);transform:translateY(-2px);box-shadow:0 6px 0 var(--encre)}
.game-icon{flex:0 0 auto;width:84px;height:auto}
.game-card-txt{display:flex;flex-direction:column;gap:6px}
.game-card-txt b{font-size:1.15rem;line-height:1.2}
.game-card-txt .go{font-weight:700;color:var(--plateau-fonce)}
.badges{display:flex;gap:4px;flex-wrap:wrap}
.badge{font-size:.78rem;font-weight:700;padding:.05em .45em;border-radius:6px;background:#EEF2FB;color:var(--gris)}
.level-chips{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.level-chip{display:flex;flex-direction:column;padding:12px 14px;background:#fff;border:2px solid var(--quadrillage);border-radius:14px;text-decoration:none;color:var(--encre)}
.level-chip:hover{border-color:var(--plateau);color:var(--encre)}
.level-chip b{font-size:1.6rem;line-height:1;color:var(--plateau)}
.level-chip span{color:var(--gris);font-size:.9rem}
.level-chip small{font-weight:700;margin-top:4px}

/* ---------- pages intérieures ---------- */
.page-head{padding:18px 0 4px}
.crumbs{font-size:.92rem;color:var(--gris);margin:6px 0 12px}
.crumbs .sep{margin:0 .25em}
.prose{max-width:72ch}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:.35em 0}
.ticks{list-style:none;padding-left:0!important}
.ticks li{position:relative;padding-left:1.7em}
.ticks li::before{content:"";position:absolute;left:0;top:.45em;width:.9em;height:.9em;border-radius:50%;background:var(--rouge);box-shadow:inset 0 -2px 0 rgba(0,0,0,.18)}
.text-cols{display:grid;gap:24px;margin-top:10px}
@media (min-width:960px){.text-cols{grid-template-columns:230px 1fr}.toc{position:sticky;top:14px;align-self:start}}
.toc{font-size:.95rem;background:#fff;border:2px solid var(--quadrillage);border-radius:14px;padding:14px 16px;align-self:start}
.toc ul{list-style:none;padding:0;margin:0 0 10px}
.toc li{margin:.3em 0}
.toc-levels a{margin-right:.4em}
.faq details{background:#fff;border:2px solid var(--quadrillage);border-radius:12px;margin:10px 0;padding:0 14px}
.faq summary{cursor:pointer;font-weight:700;padding:12px 0;min-height:44px}
.faq details[open] summary{border-bottom:1px dashed var(--quadrillage);margin-bottom:8px}
.ad{margin:28px 0;padding:10px;border:1px dashed var(--quadrillage);border-radius:10px;background:#fff;min-height:120px}
.ad-label{font-size:.75rem;color:var(--gris);margin:0 0 4px}
.after-game{margin:14px 0 0;display:flex;gap:10px;flex-wrap:wrap}

/* ---------- zone de jeu ---------- */
.zone-jeu{position:relative;background:#fff;border:3px solid var(--encre);border-radius:22px;padding:14px;margin:6px 0 0;box-shadow:0 6px 0 var(--encre);touch-action:manipulation;-webkit-user-select:none;user-select:none}
.zone-jeu.z-plateau{border-top-width:10px;border-top-color:var(--plateau)}
.zone-jeu.z-mer{border-top-width:10px;border-top-color:var(--mer)}
.zone-jeu.z-rouge{border-top-width:10px;border-top-color:var(--rouge)}
.chargement,.noscript{margin:40px 0;text-align:center;color:var(--gris)}
.game-bar{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:flex-end;margin-bottom:8px}
.setting{display:flex;flex-direction:column;gap:4px}
.setting-label{font-size:.85rem;font-weight:700;color:var(--gris)}
.seg{display:inline-flex;flex-wrap:wrap;border:2px solid var(--encre);border-radius:12px;overflow:hidden}
.seg button{font:inherit;font-weight:700;font-size:.95rem;min-height:44px;min-width:48px;padding:.3em .8em;border:0;border-right:2px solid var(--encre);background:#fff;color:var(--encre);cursor:pointer}
.seg button:last-child{border-right:0}
.seg button[aria-pressed="true"]{background:var(--encre);color:#fff}
.status{font-size:1.15rem;font-weight:700;min-height:1.6em;margin:6px 0 10px}
.scoreline{color:var(--gris);font-size:.95rem;margin:0}
.game-foot{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-top:12px}

/* ---------- panneau de question ---------- */
.q-layer{position:absolute;inset:0;z-index:5;display:flex;align-items:center;justify-content:center;padding:10px;background:rgba(29,37,71,.28);border-radius:16px}
.q-panel{background:#fff;border:3px solid var(--encre);border-radius:20px;padding:16px;width:min(360px,100%);box-shadow:0 6px 0 var(--encre);text-align:center;animation:monte .18s ease-out}
@keyframes monte{from{transform:translateY(14px);opacity:0}}
.q-titre{font-weight:700;margin:0 0 4px;font-size:1rem}
.q-calcul{font-size:clamp(2rem,9vw,2.6rem);font-weight:800;margin:0 0 12px;font-variant-numeric:tabular-nums;white-space:nowrap}
.q-champ{display:inline-block;min-width:2.4em;padding:0 .2em;border-bottom:4px solid var(--plateau);color:var(--plateau)}
.q-panel.juste{border-color:var(--vert);box-shadow:0 6px 0 var(--vert)}
.q-panel.juste .q-champ{color:var(--vert);border-color:var(--vert)}
.q-panel.faux .q-champ{color:var(--rouge);border-color:var(--rouge);text-decoration:line-through}
.q-info{font-weight:700;margin:0 0 10px;min-height:1.4em}
.q-info b{color:var(--vert);font-size:1.3em}
.pave{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}
.pave button{font:inherit;font-size:1.5rem;font-weight:800;min-height:58px;border:2px solid var(--encre);border-radius:14px;background:#F3F6FD;color:var(--encre);cursor:pointer;box-shadow:0 3px 0 var(--encre)}
.pave button:active{transform:translateY(3px);box-shadow:none}
.pave .pave-ok{background:var(--vert);color:#fff}
.pave .pave-del{background:#fff}
.pave .q-continuer{grid-column:1/-1;font-size:1.2rem}

/* ---------- Puissance 4 ---------- */
.board-wrap{position:relative;max-width:560px;margin:0 auto}
.p4-board{display:block;width:100%;height:auto;filter:drop-shadow(0 7px 0 var(--plateau-fonce))}
.p4-col{fill:transparent;cursor:pointer;outline:none}
.p4-col:hover,.p4-col:focus-visible{fill:rgba(255,255,255,.12)}
.p4-ghost{fill:var(--rouge);opacity:.55}
.p4-ghost.j2{fill:var(--jaune)}
.pion{stroke:rgba(0,0,0,.18);stroke-width:4}
.pion.j1{fill:var(--rouge)}
.pion.j2{fill:var(--jaune)}
.pion.gagnant{stroke:#fff;stroke-width:9;animation:brille 1s ease-in-out infinite alternate}
@keyframes brille{to{stroke-width:3}}
.p4-board.fini .p4-col{cursor:default}
.p4-board.fini .p4-ghost{opacity:0}

/* ---------- bataille navale ---------- */
.bn-cadre{display:grid;gap:18px}
@media (min-width:820px){.bn-cadre{grid-template-columns:1.5fr 1fr;align-items:start}}
.bn-cible{position:relative}
.bn-titre{font-size:1.05rem;margin:0 0 6px}
.bn-grille{display:grid;grid-template-columns:repeat(calc(var(--nc) + 1),1fr);gap:3px;max-width:520px}
.bn-moi .bn-grille{max-width:340px}
.bn-axe{display:flex;align-items:center;justify-content:center;font-weight:800;font-size:clamp(.8rem,2.6vw,1.05rem);color:var(--mer);font-variant-numeric:tabular-nums}
.bn-axe.coin{color:var(--gris)}
.bn-case{aspect-ratio:1;border:0;border-radius:6px;background:#D5ECEF;padding:0;font:inherit;position:relative;min-width:0}
button.bn-case{cursor:pointer;background:#C3E4E8;min-height:34px}
button.bn-case:not(.eau):not(.touche):hover{background:#A7D6DC}
button.bn-case.eau,button.bn-case.touche{cursor:default}
.bn-case.visee{outline:3px solid var(--jaune);outline-offset:-3px}
.bn-case.bateau{background:#7D879F}
.bn-case.eau::after{content:"";position:absolute;inset:38%;border-radius:50%;background:var(--mer);opacity:.6}
.bn-case.touche,button.bn-case.touche{background:var(--rouge)}
.bn-case.touche::after{content:"";position:absolute;inset:22%;background:linear-gradient(45deg,transparent 42%,#fff 42% 58%,transparent 58%),linear-gradient(-45deg,transparent 42%,#fff 42% 58%,transparent 58%)}
.bn-case.coule,button.bn-case.coule{background:#8E1F14}
button.bn-case.revele{background:#9AA3B8}
.bn-case.dernier{animation:flash .4s ease-in-out 3 alternate}
@keyframes flash{to{box-shadow:0 0 0 4px var(--jaune)}}
.bn-ships{list-style:none;padding:0;margin:8px 0;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:.92rem}
.bn-ships li{display:flex;align-items:center;gap:6px}
.bn-ships li.coule{text-decoration:line-through;color:var(--gris)}
.ship-dots{display:inline-flex;gap:2px}
.ship-dots i{width:12px;height:12px;border-radius:3px;background:#7D879F}
.bn-ships li.coule .ship-dots i{background:#8E1F14}

/* ---------- défi du jour ---------- */
.defi{max-width:640px;margin:0 auto;text-align:center}
.defi .game-bar{justify-content:center}
.defi-date{color:var(--gris);margin:4px 0}
.defi-cible{display:inline-flex;flex-direction:column;align-items:center;background:var(--encre);color:#fff;border-radius:18px;padding:8px 26px 10px;margin:4px 0 16px}
.defi-cible span{font-size:.9rem;opacity:.8}
.defi-cible b{font-size:clamp(2.6rem,10vw,3.6rem);line-height:1;color:var(--jaune);font-variant-numeric:tabular-nums}
.defi-plaques{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;min-height:70px}
.plaque{display:inline-flex;align-items:center;justify-content:center;min-width:64px;min-height:64px;padding:0 10px;border:2px solid var(--encre);border-radius:14px;background:#fff;
  font:inherit;font-size:1.6rem;font-weight:800;color:var(--encre);cursor:pointer;box-shadow:0 4px 0 var(--encre);font-variant-numeric:tabular-nums}
.plaque.resultat{background:#FFF3CF}
.plaque.choisie{background:var(--plateau);color:#fff;transform:translateY(2px);box-shadow:0 2px 0 var(--encre)}
.plaque:disabled{cursor:default}
.defi-ops{display:flex;justify-content:center;gap:10px;margin:16px 0 4px}
.defi-op{width:64px;height:58px;border:2px solid var(--encre);border-radius:14px;background:#F3F6FD;font:inherit;font-size:1.8rem;font-weight:800;color:var(--encre);cursor:pointer;box-shadow:0 3px 0 var(--encre)}
.defi-op.choisie{background:var(--jaune)}
.defi-op:disabled{opacity:.4;cursor:default}
.defi-etapes{list-style:none;padding:0;margin:0 0 10px;font-size:1.25rem;font-weight:700;font-variant-numeric:tabular-nums}
.defi-actions{display:flex;justify-content:center;gap:10px}
.defi-bravo{margin:16px auto;padding:16px;border:3px solid var(--vert);border-radius:18px;background:#EAF7EF}
.defi-bravo.pop{animation:monte .3s ease-out}
.bravo-titre{font-size:1.5rem;font-weight:800;color:var(--vert);margin:0 0 4px}
.bravo-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.defi .scoreline{margin-top:12px}

/* ---------- solution d'hier ---------- */
.sols{display:grid;gap:16px;margin:10px 0 20px}
.sol-block{background:#fff;border:2px solid var(--encre);border-radius:18px;padding:6px 18px 12px;box-shadow:0 4px 0 var(--encre)}
.sol-block h2{margin:.6em 0 .4em}
.sol-block h2 small{font-size:.9rem;color:var(--gris);font-weight:600}
.sol-tirage{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.sol-tirage .plaque{min-width:48px;min-height:48px;font-size:1.25rem;cursor:default}
.sol-tirage .cible{background:var(--encre);color:var(--jaune);font-weight:800;font-size:1.5rem;border-radius:12px;padding:.1em .6em;margin-right:8px}
.sol-etapes{font-size:1.2rem;font-weight:700;font-variant-numeric:tabular-nums}

/* ---------- règles ---------- */
.rule-block{border-bottom:2px dashed var(--quadrillage);padding-bottom:10px}

/* ---------- grilles à imprimer ---------- */
.print-zone{overflow-x:auto;padding-bottom:10px}
.feuilles{display:flex;flex-direction:column;align-items:center;gap:24px;margin:10px 0 24px}
.feuille{width:210mm;min-height:297mm;padding:12mm 10mm;background:#fff;box-shadow:0 2px 12px rgba(29,37,71,.18);display:flex;flex-direction:column;align-items:center;font-family:Arial,Helvetica,sans-serif;color:#000}
.feuille-head{width:100%;text-align:center}
.feuille-head h2{margin:0 0 3mm;font-size:16pt}
.feuille-ids{display:flex;justify-content:space-between;font-size:11pt;margin:0 0 4mm}
.grille-papier{border-collapse:collapse;margin:2mm auto 3mm}
.grille-papier caption{font-weight:700;font-size:12pt;padding-bottom:2mm}
.grille-papier th,.grille-papier td{width:var(--case);height:var(--case);border:1.2pt solid #000;text-align:center;padding:0;font-size:12pt}
.grille-papier thead th,.grille-papier tbody th{background:#E6E9EF;font-weight:700}
.grille-papier .fois{font-size:14pt}
.grille-papier td{font-size:11pt;color:#333}
.feuille-flotte,.feuille-regle{font-size:11pt;margin:1mm 0 3mm;text-align:center}
.ship-tick{display:inline-flex;margin:0 2mm;vertical-align:middle}
.ship-tick i{width:4mm;height:4mm;border:1pt solid #000;margin-left:-1pt}
.feuille-src{margin-top:auto;font-size:8pt;color:#555}

/* ---------- pied de page ---------- */
.foot{margin-top:50px;background:var(--encre);color:#E6EAF5;padding:24px 0 30px}
.foot-in{max-width:1100px;margin:0 auto;padding:0 18px}
.foot a{color:#fff}
.foot-links{display:flex;flex-wrap:wrap;gap:6px 18px}
.sisters{font-size:.92rem;display:flex;flex-wrap:wrap;gap:4px 14px;margin:0 0 1em}
.sisters span{opacity:.75}
.foot-copy{font-size:.9rem;opacity:.75;margin:0}

/* ---------- petits écrans ---------- */
@media (max-width:560px){
  body{font-size:16px}
  .top-in{gap:8px}
  .tabs{width:100%}
  .tab{flex:1;justify-content:center;padding:.4em .5em;font-size:.95rem}
  .zone-jeu{padding:10px;border-radius:16px;margin-left:-8px;margin-right:-8px}
  .game-bar{gap:8px 14px}
  .seg button{padding:.3em .55em}
  .plaque{min-width:56px;min-height:56px;font-size:1.4rem}
  /* le calcul s'ouvre en bas de l'écran, sous le pouce, sans cacher le haut du plateau */
  .q-layer{position:fixed;inset:0;align-items:flex-end;padding:0;border-radius:0;z-index:50}
  .q-panel{width:100%;max-width:none;border-radius:22px 22px 0 0;border-bottom:0;padding:14px 14px calc(14px + env(safe-area-inset-bottom,0px));box-shadow:0 -4px 0 var(--encre)}
  .pave button{min-height:54px}
  .setting-label{font-size:.78rem}
  .game-bar .seg button{min-height:42px}
}

/* ---------- mouvement réduit ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition:none!important}
}

/* ---------- impression ---------- */
@media print{
  @page{size:A4 portrait;margin:10mm}
  body{background:none}
  .top,.foot,.no-print,.ad,.skip,.crumbs{display:none!important}
  .print-page main>*:not(.print-zone){display:none!important}
  .print-zone{overflow:visible;padding:0;max-width:none}
  .feuilles{gap:0;margin:0}
  .feuille{box-shadow:none;page-break-after:always;break-after:page;width:auto;min-height:0;height:276mm;padding:0}
  .feuille:last-child{page-break-after:auto;break-after:auto}
  .prose{max-width:none}
  .rule-block{break-inside:avoid}
}