/* ==========================================================================
   JEU : PRODUIT MATRICIEL (CORRECTION UI SETTINGS & MOBILE)
   ========================================================================== */

/* --- 1. LAYOUT PRINCIPAL --- */
.math-container.matrix-layout {
    display: flex; flex-direction: column; 
    justify-content: space-between; 
    height: 100%; width: 100%;
    padding: 1.5rem; 
    flex: 1; /* Force l'étirement */
    position: relative; z-index: 2;
    transition: opacity 0.3s ease;
}

#game-over-overlay.visible ~ .math-container { opacity: 0; pointer-events: none; }

.blurred { filter: blur(5px); opacity: 0.3; pointer-events: none; }

/* FIX : Forcer l'annulation des transitions globales sur les boutons tactiques et leurs icônes */
.icon-btn, .settings-btn, .icon-btn svg, .settings-btn svg, .back-btn, .back-btn svg {
    transition: none !important; animation: none !important;
}

/* Message Prêt au centre */
#status-overlay {
    position: absolute; top: 50%; left: 50%;
    transform: translate(-50%, -50%); text-align: center;
    z-index: 10; cursor: pointer;
}
#status-overlay.hidden { display: none !important; opacity: 0; }

.status-main-text {
    font-family: var(--font-heading); font-size: 5.5rem; font-weight: 500; 
    color: var(--text-primary); letter-spacing: -4px; line-height: 1; transition: opacity 0.2s;
}
.status-sub-text {
    display: flex; align-items: center; justify-content: center; gap: 10px; margin-top: 1.5rem;
    font-family: var(--font-body); font-size: 1.1rem; color: var(--text-secondary); 
    font-weight: 500; text-transform: uppercase; letter-spacing: 1px;
}
.status-sub-text svg { width: 24px; height: 24px; color: var(--text-primary); }

.game-board:fullscreen .status-main-text { font-size: 8.5rem; }
.game-board:fullscreen .status-sub-text { font-size: 1.5rem; margin-top: 2rem; }
.game-board:fullscreen .status-sub-text svg { width: 32px; height: 32px; }


/* --- 2. HEADER & TIMER --- */
.game-header { padding: 0; margin-bottom: 0; flex-shrink: 0; }

.score-box { 
    display: flex !important;
    justify-content: center !important;
    align-items: center !important;
    width: 72px !important;
    min-width: 72px !important;
    height: 72px !important;
    padding: 0 !important;
    margin: 0 !important;
}

.timer-display {
    display: flex; align-items: center; gap: 12px; 
    height: 100%; font-size: 2.5rem; 
    min-width: 110px; justify-content: center; padding: 0 15px; 
    font-family: var(--font-heading); font-weight: 400;
    color: var(--accent-color); font-variant-numeric: tabular-nums; 
}
.timer-display svg { width: 48px; height: 48px; stroke: none; overflow: visible; }
.timer-text { padding-top: 8px; white-space: nowrap; }
.timer-danger { color: #ef4444 !important; animation: pulseRed 1s infinite; }

/* --- 3. ESPACE DE TRAVAIL (Le centre) --- */
.workspace-container {
    flex-grow: 1; width: 100%; display: flex; align-items: center; 
    justify-content: center; gap: 0; overflow: hidden; padding: 0; position: relative;
}

.matrix-operator {
    font-family: var(--font-heading); font-size: calc(var(--cell-size, 40px) * 0.7); 
    color: var(--text-secondary); font-weight: 300; margin: 0 2px;
    display: flex; align-items: center; justify-content: center;
}

/* --- 4. STRUCTURE DES MATRICES --- */
.matrix-wrapper {
    display: flex; align-items: stretch; position: relative;
    padding: 2px 5px; margin: 0 1px; flex-shrink: 0;
}
.matrix-wrapper::before, .matrix-wrapper::after {
    content: ''; position: absolute; width: 6px; top: 0; bottom: 0;
    border: 2px solid var(--text-primary); transition: border-color 0.4s; pointer-events: none;
}
.matrix-wrapper::before { left: 0; border-right: none; border-radius: 6px 0 0 6px; }
.matrix-wrapper::after { right: 0; border-left: none; border-radius: 0 6px 6px 0; }

.matrix-grid { display: grid; gap: 1px; justify-items: center; align-items: center; }

/* --- 5. CELLULES ET INPUTS --- */
.matrix-cell {
    display: flex; align-items: center; justify-content: center;
    font-family: var(--font-heading); color: var(--text-primary); padding: 0; 
    width: var(--cell-size, 40px); height: var(--cell-size, 40px);
    font-size: calc(var(--cell-size, 40px) * 0.45); 
}

input.matrix-cell {
    background-color: var(--bg-main); border: 1px solid var(--border-color);
    border-radius: 4px; text-align: center; outline: none; transition: all 0.2s; font-weight: 500;
    appearance: none; -moz-appearance: textfield;
    width: calc(var(--cell-size, 40px) - 4px); height: calc(var(--cell-size, 40px) - 4px);  
    margin: 2px; font-size: calc(var(--cell-size, 40px) * 0.45); 
}

input.matrix-cell:focus { border-color: var(--accent-color); box-shadow: 0 0 0 2px var(--accent-glow); z-index: 5; }
input.matrix-cell.correct {
    background-color: color-mix(in srgb, var(--accent-color), transparent 85%);
    border-color: var(--accent-color); color: var(--accent-color); pointer-events: none;
}
input.matrix-cell.wrong {
    border-color: var(--accent-color-secondary); color: var(--accent-color-secondary);
    animation: shake 0.4s ease-in-out;
}
@keyframes shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }

/* --- 6. ACTIONS (FOOTER JEU) --- */
.game-actions-row { padding: 0; margin-top: auto; flex-shrink: 0; width: 100%; }

#validate-btn {
    height: 72px !important;
    flex: 1 !important; 
    margin: 0 1rem !important;
    padding: 0 !important;
    font-size: 1.4rem !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

html.global-opaque input.matrix-cell { background-color: var(--card-bg); }

/* ==========================================================================
   8. PARAMÈTRES SPÉCIFIQUES & RÉSULTATS
   ========================================================================== */

.range-inputs.small-range { display: flex; align-items: center; gap: 8px; margin-left: 0; }
.range-inputs.small-range input { width: 70px !important; padding: 6px !important; font-size: 0.9rem !important; }
.range-inputs.small-range span { font-size: 0.85rem; color: var(--text-secondary); }

.mode-switch-wrapper {
    display: flex; position: relative; background-color: var(--bg-main);
    border: 1px solid var(--border-color); border-radius: var(--radius-md);
    padding: 4px; margin-bottom: 1.5rem;
}
.mode-switch-wrapper input[type="radio"] { display: none; }
.mode-switch-wrapper label {
    flex: 1; text-align: center; padding: 10px 0; font-family: var(--font-heading); font-weight: 600; font-size: 0.9rem;
    color: var(--text-secondary); cursor: pointer; z-index: 2; margin: 0; transition: color 0.3s ease; text-transform: uppercase; letter-spacing: 1px;
}
.mode-switch-wrapper input:checked + label { color: var(--text-primary); }
.mode-slider {
    position: absolute; top: 4px; bottom: 4px; width: calc(50% - 4px);
    background-color: var(--card-bg); border-radius: 6px; z-index: 1;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.mode-switch-wrapper input[value="sandbox"]:checked ~ .mode-slider { transform: translateX(100%); }

.input-select, select {
    background-color: var(--bg-main); color: var(--text-primary);
    border: 1px solid var(--border-color); padding: 8px; border-radius: var(--radius-md);
    font-family: var(--font-body); font-size: 0.95rem; cursor: pointer; outline: none; 
    width: auto; min-width: 140px; max-width: 200px;
    text-align: center;
    text-align-last: center;
}
select:focus { border-color: var(--accent-color); box-shadow: 0 0 0 2px var(--accent-glow); }

.results-view { width: 100%; display: flex; flex-direction: column; align-items: center; }
.results-view.hidden { display: none !important; }

#game-over-overlay .overlay-content { justify-content: center; gap: 1.5rem; }

.centered-score-item { text-align: center; margin-bottom: 3rem; }

.centered-score-item .res-label { font-size: 1.2rem; font-weight: 600; text-transform: uppercase; letter-spacing: 2px; opacity: 0.7; display: block; margin-bottom: 0.8rem; }

.big-score-container { display: flex; align-items: baseline; justify-content: center; position: relative; }

#results-ranked .res-value.big, 
#results-sandbox .res-value.big { 
    font-size: 5.5rem; font-weight: 700; line-height: 1; font-family: var(--font-heading); 
}

.distribution-chart-container {
    position: relative; width: 100%; max-width: 650px; height: 180px;
    margin: 1.5rem 0 2rem 0;
    border-bottom: 2px solid var(--border-color); cursor: crosshair;
}
.curve-svg { width: 100%; height: 100%; overflow: visible; }
.axis-label { position: absolute; bottom: -25px; font-family: var(--font-body); font-size: 0.8rem; color: var(--text-secondary); }
.axis-label.left { left: 0; }
.axis-label.right { right: 0; }

.hover-line { position: absolute; top: 0; bottom: 0; width: 1px; background: var(--text-primary); transform: translateX(-50%); pointer-events: none; opacity: 0.3; z-index: 3; transition: opacity 0.2s ease; }
.chart-tooltip { position: absolute; top: -55px; transform: translateX(-50%); background: var(--card-bg); border: 1px solid var(--border-color); padding: 6px 12px; border-radius: var(--radius-md); font-family: var(--font-body); font-size: 0.9rem; color: var(--text-primary); pointer-events: none; white-space: nowrap; z-index: 10; box-shadow: var(--shadow-card); text-align: center; line-height: 1.4; transition: opacity 0.2s ease, visibility 0.2s ease; }
.hover-line.hidden, .chart-tooltip.hidden { opacity: 0 !important; visibility: hidden !important; }

.score-marker { position: absolute; top: 0; bottom: 0; display: flex; flex-direction: column; align-items: center; transform: translateX(-50%); pointer-events: none; transition: left 0.5s ease-out; }
.marker-line { width: 2px; height: 100%; border-left: 2px dashed currentColor; }
.marker-label { position: absolute; font-family: var(--font-heading); font-size: 0.8rem; font-weight: 700; padding: 2px 6px; border-radius: 4px; text-transform: uppercase; white-space: nowrap; }
.marker-current { color: var(--accent-color); z-index: 2; }
.marker-current .marker-label { bottom: 100%; margin-bottom: 5px; background: var(--bg-main); border: 1px solid currentColor;}
.marker-best { color: var(--text-tertiary); z-index: 1; opacity: 1;}
.marker-best .marker-label { top: 100%; margin-top: 5px; color: var(--text-secondary); }

/* --- Stats Sandbox --- */
.sandbox-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin: 1.5rem 0 2rem 0; width: 100%; max-width: 600px; }
.stat-box-small { background: transparent; border: 1px solid var(--border-color); padding: 12px 20px; border-radius: var(--radius-md); display: flex; flex-direction: column; align-items: center; min-width: 120px; }
.stat-title { font-family: var(--font-heading); font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; text-align: center; }
.stat-value { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 600; color: var(--text-primary); }

/* --- Graphique en Barres Sandbox --- */
.history-chart { display: flex; align-items: stretch; justify-content: center; gap: 16px; height: 120px; width: max-content; max-width: 100%; margin: 0 auto; padding: 0 60px; border-bottom: 2px solid var(--border-color); overflow-x: auto; scrollbar-width: none; }
.history-chart::-webkit-scrollbar { display: none; }
.history-bar-wrapper { display: flex; flex-direction: column; align-items: center; justify-content: flex-end; height: 100%; position: relative; flex-shrink: 1; }
.history-bar { width: 45px; background-color: var(--accent-color); opacity: 0.8; border-radius: 6px 6px 0 0; position: relative; transition: none !important; }
.bar-label { font-size: 0.85rem; font-family: var(--font-body); color: var(--text-primary); margin-bottom: 6px; font-weight: 600; }
.bar-index { position: absolute; top: 100%; margin-top: 6px; font-size: 0.8rem; font-family: var(--font-heading); color: var(--text-secondary); }

#restart-btn { margin-top: 2rem; }

/* Bouton de sortie du mode plein écran iOS */
.exit-fs-btn {
    position: absolute; top: 20px; right: 20px;
    background: transparent; border: none; color: var(--text-secondary);
    cursor: pointer; display: none; padding: 8px; z-index: 10000;
    transition: color var(--transition-fast);
}
.exit-fs-btn svg { width: 32px; height: 32px; }
.exit-fs-btn:hover { color: var(--accent-color-secondary); }
.ios-fullscreen .exit-fs-btn { display: block !important; }

/* ==========================================================================
   7. RESPONSIVE (L'AJUSTEMENT MOBILE GLOABLE)
   ========================================================================== */

/* Sur bureau, le jeu prend tout l'espace et supprime le padding du bas */
.game-page .main-content {
    display: flex;
    flex-direction: column;
}

.game-board {
    flex: 1 0 auto; 
    display: flex;
    flex-direction: column;
    min-height: 600px;
    margin-bottom: 0 !important; 
}

/* L'overlay de fin de partie doit pouvoir scroller s'il manque de place */
#game-over-overlay { overflow-y: auto; }
#game-over-overlay .overlay-content {
    height: auto;
    min-height: 100%;
    padding: 4rem 0; 
}

@media (max-width: 900px) {
    .math-container.matrix-layout { padding: 0.75rem; }
    
    .workspace-container {
        display: grid !important;
        grid-template-columns: max-content max-content max-content; 
        justify-content: center;
        align-content: center; 
        align-items: center;
        gap: 4px 4px; 
        width: 100%;
        overflow-x: auto; 
    }
    
    .matrix-operator {
        transform: none;            
        margin: 0;
    }
    
    .workspace-container > .matrix-operator:nth-child(4) {
        grid-column: 1 / -1;
        justify-self: center;
        text-align: center;
        margin: 2px 0; 
    }

    .workspace-container > .matrix-wrapper:nth-child(5) {
        grid-column: 1 / -1;
        justify-self: center;
        margin: 0;
    }
}

@media (max-width: 700px) {
    .score-box {
        width: 60px !important;
        min-width: 60px !important;
        height: 60px !important;
        font-size: 1.4rem !important;
    }

    #validate-btn {
        height: 60px !important;
        margin: 0 0.5rem !important;
        font-size: 1.2rem !important;
    }

    .game-actions-row {
        gap: 12px;
    }

    /* FIX ZOOM NÉGATIF iOS : Empêche le zoom auto lors du focus sur l'input */
    input.matrix-cell {
        font-size: max(16px, calc(var(--cell-size, 40px) * 0.45)) !important;
    }

    .status-main-text { font-size: 4rem; }
    .status-sub-text { font-size: 0.9rem; flex-wrap: wrap; }
    
    #results-ranked .res-value.big, #results-sandbox .res-value.big { font-size: 4.5rem; }
    .distribution-chart-container { height: 140px; margin-top: 1.5rem; margin-bottom: 2.5rem; }
    
    .sandbox-stats { gap: 0.5rem; margin: 1.5rem 0 2rem 0; flex-direction: column; align-items: center; }
    .stat-box-small { padding: 10px; min-width: 100px; }
    .stat-value { font-size: 1.2rem; }
    .history-chart { gap: 8px; height: 100px; padding: 0 40px; }
    .history-bar { width: 35px; }
    .bar-label { font-size: 0.75rem; }
    
    #restart-btn { margin-top: 1rem; }

    /* On libère un maximum de largeur en mobile */
    .math-container.matrix-layout {
        padding: 0.5rem;
    }

    body.game-page { overscroll-behavior: none; }
    #settings-panel { touch-action: auto; overscroll-behavior: contain; }

    /* FIX 1 : Main Content aligné en HAUT */
    .game-page .main-content {
        display: flex !important;
        flex-direction: column !important;
        justify-content: flex-start !important; 
        height: auto !important; 
        min-height: calc(100svh - 80px) !important;
        padding-top: 80px !important;
        padding-bottom: 0 !important; 
        padding-left: 0 !important; 
        padding-right: 0 !important;
    }

    /* FIX 2 : Plateau remplit tout jusqu'au footer */
    .game-board { 
        flex: 1 1 100% !important;     
        display: flex !important;      
        flex-direction: column !important; 
        height: auto !important;
        min-height: calc(100svh - 80px) !important; 
        max-height: none !important;
        margin: 0 !important;          
        border-radius: 0;              
    }

    /* FIX 3 : Overlay de fin avec padding réel (Scroll possible si petit écran) */
    #game-over-overlay { overflow-y: auto !important; }
    #game-over-overlay .overlay-content {
        height: auto !important;
        min-height: 100% !important;
        padding: 4rem 0 3rem 0 !important; 
        justify-content: center !important;
        gap: 2.5rem !important;
    }

    /* FIX 4 : Cacher le footer pendant la saisie sur les inputs (TOUS NAVIGATEURS) */
    body.game-page:has(.game-board:focus-within) footer,
    body.game-page:has(.game-board:focus-within) #footer-placeholder {
        display: none !important;
    }

    /* FIX 5 : Gestion de la zone pendant le clavier */
    .game-board:focus-within {
        flex: 1 1 100% !important; 
        height: auto !important;       
        min-height: 250px !important; 
        max-height: none !important;
    }

    /* Si les matrices débordent, on scrolle dans la zone de travail */
    .game-board:focus-within .workspace-container {
        overflow-y: auto !important;
    }

    /* Ajustement du padding quand on passe en plein écran */
    .game-page .game-board:fullscreen .math-container,
    .ios-fullscreen .math-container {
        padding-top: 1.5rem !important; 
        padding-bottom: 1rem !important;
    }

    /* NEUTRALISATION DU GROSSISSEMENT PLEIN ÉCRAN (MOBILE) */
    .game-board:fullscreen .workspace-container {
        width: 100% !important;
        height: auto !important;
        max-width: 100% !important;
        max-height: 100% !important;
        transform: none !important; 
        align-content: center !important;
    }
    
    .game-board:fullscreen .math-container.matrix-layout {
        transform: none !important;
        padding: 0.5rem !important;
        height: 100% !important;
        max-height: 100vh !important;
    }

    .game-board:fullscreen .status-main-text {
        font-size: 4rem !important; 
    }

    .game-board:fullscreen .status-sub-text {
        font-size: 0.9rem !important;
        margin-top: 1.5rem !important;
    }

    .game-board:fullscreen .status-sub-text svg {
        width: 24px !important;
        height: 24px !important;
    }
}

/* ==========================================================================
   8. FALLBACK PLEIN ECRAN (Pour contourner les soucis sur PC / Android)
   ========================================================================== */

/* Fullscreen Natif PC : Fixe les bases */
.game-board:fullscreen {
    width: 100vw !important;
    height: 100vh !important;
    max-width: none !important;
    max-height: none !important;
    border-radius: 0 !important;
    border: none !important;
    background-color: var(--bg-main);
    display: flex !important;
    flex-direction: column !important;
}

/* Sur Produit Matriciel, NE JAMAIS activer le .ios-fullscreen car il bloque le clavier virtuel ! 
   Mais on le laisse en "sécurité" si jamais un script tente de l'appeler. */
.ios-fullscreen {
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    height: 100dvh !important;
    max-width: none !important;
    max-height: none !important;
    z-index: 9999 !important;
    border-radius: 0 !important;
    border: none !important;
    background-color: var(--bg-main) !important;
    display: flex !important;
    flex-direction: column !important;
}

/* ==========================================================================
   AFFICHAGE DU NOUVEAU RECORD
   ========================================================================== */
.new-record, 
#new-record-msg {
    color: var(--record-color, #FFA914) !important;
}

.new-record svg {
    color: var(--record-color, #FFA914) !important;
}