:root {
    --navy: #111a44;
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-strong: #ffffff;
    --text: #162039;
    --muted: #65708a;
    --line: #dfe5f0;
    --accent: #2ca6a4;
    --accent-dark: #218c8a;
    --accent-soft: #eef9f8;
    --success: #087f5b;
    --success-soft: #edf9f4;
    --danger: #b42318;
    --danger-soft: #fdeceb;
    --shadow: 0 18px 55px rgba(42, 55, 98, 0.11);
    --radius: 22px;
    --plateau-fond: #bbada0;
    --case-vide: rgba(238, 228, 218, 0.35);
}

* { box-sizing: border-box; }

html { color-scheme: light; }

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at 8% 5%, rgba(19, 184, 178, 0.14), transparent 26rem),
        radial-gradient(circle at 95% 0%, rgba(101, 49, 201, 0.12), transparent 28rem),
        var(--bg);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .62; }

/* En-tete/pied de page/texte de lien : desormais herites du style.css partage
   (jeux/assets/css/style.css, charge avant celui-ci) pour rester coherent avec
   le hub et les pages de jeux a enigme - voir inc/page-jeu-enigme.php. */

.page-shell { padding-bottom: 64px; }

.eyebrow {
    text-transform: uppercase;
    letter-spacing: .08em;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent-dark);
    margin: 0 0 6px;
}

h1 { margin: 0 0 14px; font-size: clamp(26px, 4vw, 34px); }

.intro-text { color: var(--muted); margin: 0 0 24px; }

.primary-button {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 12px 20px;
    font-weight: 700;
}

.primary-button:hover { background: var(--accent-dark); }

/* .site-footer : idem, style herite du CSS partage. */

/* --- Score / statut --- */

.scoreboard { display: flex; gap: 14px; margin-bottom: 14px; flex-wrap: wrap; }

.score-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 10px 22px;
    min-width: 90px;
}

.score-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--muted);
    font-weight: 700;
}

.score-valeur { font-size: 20px; font-weight: 800; color: var(--accent-dark); }

.statut-jeu { font-weight: 700; margin: 0 0 16px; font-size: 16px; min-height: 22px; }
.statut-jeu.statut-victoire { color: var(--success); }
.statut-jeu.statut-nul { color: var(--danger); }

.jeu-actions { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 20px; }

/* --- Plateau 2048 --- */

.plateau-cadre-2048 {
    position: relative;
    width: min(100%, 420px);
    margin: 0 auto;
}

.plateau-2048 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(4, 1fr);
    gap: 10px;
    background: var(--plateau-fond);
    border-radius: 16px;
    padding: 10px;
    box-shadow: var(--shadow);
    touch-action: none;
    user-select: none;
}

.case-2048 {
    aspect-ratio: 1;
    border-radius: 10px;
    background: var(--case-vide);
    display: grid;
    place-items: center;
    font-weight: 800;
    font-size: clamp(16px, 5vw, 28px);
    color: #6b6055;
    transition: background-color .12s ease;
}

.case-2048[data-valeur="2"] { background: #eee4da; color: #776e65; }
.case-2048[data-valeur="4"] { background: #ede0c8; color: #776e65; }
.case-2048[data-valeur="8"] { background: #f2b179; color: #fff; }
.case-2048[data-valeur="16"] { background: #f59563; color: #fff; }
.case-2048[data-valeur="32"] { background: #f67c5f; color: #fff; }
.case-2048[data-valeur="64"] { background: #f65e3b; color: #fff; }
.case-2048[data-valeur="128"] { background: #edcf72; color: #fff; font-size: clamp(14px, 4.4vw, 24px); }
.case-2048[data-valeur="256"] { background: #edcc61; color: #fff; font-size: clamp(14px, 4.4vw, 24px); }
.case-2048[data-valeur="512"] { background: #edc850; color: #fff; font-size: clamp(14px, 4.4vw, 24px); }
.case-2048[data-valeur="1024"] { background: #edc53f; color: #fff; font-size: clamp(12px, 3.8vw, 20px); }
.case-2048[data-valeur="2048"] { background: #edc22e; color: #fff; font-size: clamp(12px, 3.8vw, 20px); }
.case-2048[data-valeur-haute="1"] { background: #3c3a32; color: #fff; font-size: clamp(12px, 3.8vw, 20px); }

.overlay-fin {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: rgba(255, 253, 248, 0.88);
    border-radius: 16px;
}

.overlay-fin.is-hidden { display: none; }

.overlay-texte { font-size: 22px; font-weight: 800; color: var(--accent-dark); margin: 0; text-align: center; padding: 0 20px; }

.overlay-boutons { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }