/* ==========================================================================
   JEU 02 : CALCUL MENTAL (STYLES SPÉCIFIQUES)
   ========================================================================== */

/* ==========================================================================
   1. LAYOUT & VISIBILITÉ
   ========================================================================== */
.math-container {
    width: 100%; height: 100%; padding: 1.5rem;
    flex: 1;
    display: flex; flex-direction: column; 
    justify-content: space-between; align-items: center;
    position: relative; z-index: 2;
    transition: filter 0.3s ease, opacity 0.3s ease;
}

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

.hint-pause { 
    margin-top: 1rem; font-size: 0.85rem; color: var(--text-secondary); 
    opacity: 0.6; transition: opacity 0.2s; text-align: center; display: none;
}
.overlay.visible ~ .math-container .hint-pause { opacity: 0; }

/* 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;
}

/* --- OVERLAY DE STATUT (PRÊT ?) --- */
#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; }

/* Effet de flou harmonisé avec Visual Memory */
.blurred { filter: blur(10px); opacity: 0.3; pointer-events: none; transition: filter 0.3s ease, opacity 0.3s ease; }

/* ==========================================================================
   2. ÉLÉMENTS DU JEU (OPERATION & TIMER)
   ========================================================================== */
#operation-display {
    flex-grow: 1; width: 100%;
    display: grid; grid-template-columns: 1fr auto 1fr;
    align-items: center; gap: 15px;
    font-family: var(--font-heading); 
    font-size: 5.5rem; 
    font-weight: 500; 
    color: var(--text-primary); letter-spacing: -4px; line-height: 1; text-align: center;
    transition: opacity 0.2s;
}

.op-part.part-a { text-align: right; }
.op-part.part-symbol { text-align: center; }
.op-part.part-b { text-align: left; }

#operation-display.single-message { display: flex; justify-content: center; }
.game-board:fullscreen #operation-display { font-size: 8.5rem; }

.timer-display {
    display: flex; align-items: center; gap: 12px; 
    height: 100%; font-size: 2.5rem; 
    min-width: 110px; justify-content: center; padding: 0px 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; }

/* ==========================================================================
   3. SYSTÈME D'INPUT PERSONNALISÉ
   ========================================================================== */
#input-wrapper {
    position: relative; flex: 1; height: 72px;
    background-color: var(--bg-main);
    border: 2px solid var(--border-color); border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    transition: border-color 0.2s, transform 0.1s, box-shadow 0.2s;
}
html.global-opaque #input-wrapper { background-color: var(--card-bg); box-shadow: var(--shadow-card); }

#input-wrapper.focused { 
    border-color: var(--accent-color); 
    box-shadow: 0 0 0 4px var(--accent-glow); 
    transform: scale(1.01); 
}

#visual-input { 
    font-family: var(--font-heading); font-size: 3rem; 
    color: var(--text-primary); font-weight: 400; 
    pointer-events: none; display: flex; align-items: center; 
}
.game-board:fullscreen #visual-input { font-size: 4.5rem; }

#fixed-cursor { 
    width: 2px; height: 50px; margin-left: 5px; 
    background-color: var(--text-secondary); opacity: 0.3; transition: 0.2s; 
}
#input-wrapper.focused #fixed-cursor { background-color: var(--accent-color); opacity: 1; }

/* FIX : Flash opaque mais affiché EN DESSOUS du texte (z-index: 1) */
.game-board { position: relative; }
.flash-success::after { 
    content: '';
    position: absolute;
    inset: 0;
    background-color: var(--accent-color);
    pointer-events: none;
    z-index: 1; 
    border-radius: inherit; 
    animation: flashOverlayAnim 0.4s ease-out forwards;
}
@keyframes flashOverlayAnim { 
    0% { opacity: 0.4; } 
    100% { opacity: 0; }
}

/* ==========================================================================
   4. UI PARTAGÉE (OVERLAYS, TOGGLE, COURBE DE GAUSS, SETTINGS)
   ========================================================================== */
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: 1rem; cursor: pointer; outline: none;
}
select:focus { border-color: var(--accent-color); box-shadow: 0 0 0 2px var(--accent-glow); }

.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%); }

/* Inputs Sandbox */
.operations-list { display: flex; flex-direction: column; gap: 0.8rem; padding-left: 0; }
.range-inputs.small-range { display: flex; align-items: center; gap: 8px; margin-left: 28px; }
.range-inputs.small-range input { width: 70px; padding: 6px; font-size: 0.9rem; }
.range-inputs.small-range span { font-size: 0.85rem; color: var(--text-secondary); }

/* Vues de résultats */
.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); 
}

.score-unit { 
    font-size: 1.4rem; color: var(--accent-color); margin-left: 8px; font-family: var(--font-heading); font-weight: 500; 
}

/* --- 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; }
.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);
}

/* GRAPHIQUE COURBE DE GAUSS */
.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); }

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

/* ==========================================================================
   5. RESPONSIVE SPÉCIFIQUE
   ========================================================================== */

/* Forcer l'occupation de tout l'espace sur Desktop / grands écrans */


@media (max-width: 900px) { 
    #operation-display { font-size: 5rem; } 
    #visual-input { font-size: 3rem; } 
    .status-main-text { font-size: 5rem; }
}

@media (max-width: 700px) {
    .math-container { padding: 1.5rem; padding-bottom: 2rem; }
    #operation-display { font-size: 4rem; }
    #visual-input { font-size: 2.2rem; }
    .timer-display svg { width: 40px; height: 40px; }
    
    #results-ranked .res-value.big, #results-sandbox .res-value.big { font-size: 4.5rem; }
    .score-unit { font-size: 1.2rem; }
    .distribution-chart-container { height: 140px; margin-top: 1.5rem; margin-bottom: 2.5rem; }
    
    #restart-btn { margin-top: 1rem; }

    .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; }
    
    .status-main-text { font-size: 4rem; }
    .status-sub-text { font-size: 0.9rem; flex-wrap: wrap; }
    #input-wrapper { height: 60px !important; }

    .game-page .game-board:fullscreen #operation-display { font-size: 4rem !important; }
    .game-page .game-board:fullscreen #visual-input { font-size: 2.2rem !important; }

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

    /* FIX 1 : Main Content force le jeu à s'aligner 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 de jeu remplit l'espace 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 de partie avec un VRAI padding ! */
    #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;
    }

    /* Empêcher les éléments d'être coupés en haut en plein écran */
    .game-page .game-board:fullscreen .math-container,
    .ios-fullscreen .math-container {
        padding-top: 3rem !important; 
        padding-bottom: 2rem !important;
    }
}

/* ==========================================================================
   6. FALLBACK PLEIN ECRAN (BULLDOZER)
   ========================================================================== */
.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;
    justify-content: center !important;
    align-items: center !important;
}

.ios-fullscreen .exit-fs-btn { display: block !important; }
.ios-fullscreen ~ * #icon-expand { display: none !important; }
.ios-fullscreen ~ * #icon-compress { display: block !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;
}

.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;
}