/* ==========================================================================
   JEU : BINARY COUNTING (STYLES SPÉCIFIQUES - APPLIQUANT LE MOTEUR DE CALCUL MENTAL)
   ========================================================================== */

/* ==========================================================================
   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;
}

.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;
}

.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: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    color: var(--text-primary);
    text-align: center;
    transition: opacity 0.2s;
}

#operation-display.single-message {
    display: flex;
    justify-content: center;
}

.game-board:fullscreen #target-number {
    font-size: 8.5rem !important;
}

.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;
}

.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%);
}

.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;
}

.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);
}

.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);
}

.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
   ========================================================================== */

@media (max-width: 900px) {
    #target-number {
        font-size: 4rem !important;
    }

    #visual-input {
        font-size: 3rem;
    }

    .status-main-text {
        font-size: 5rem;
    }
}

@media (max-width: 700px) {
    .math-container {
        padding: 1.5rem;
        padding-bottom: 2rem;
    }

    #target-number {
        font-size: 3rem !important;
    }

    #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 #target-number {
        font-size: 3rem !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;
    }

    .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;
    }

    .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;
    }

    #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;
    }

    .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;
}