/* ============================================
   NeuronClicker - Main Stylesheet
   ============================================ */

/* --- CSS Variables --- */
:root {
    /* Background colors */
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-accent: #0f3460;
    --bg-panel: rgba(22, 33, 62, 0.9);

    /* Neuron colors (glow) */
    --neuron-cyan: #00d9ff;
    --neuron-magenta: #ff00ff;
    --neuron-green: #00ff88;

    /* Text colors */
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --text-muted: #8899aa;

    /* State colors */
    --color-success: #00ff88;
    --color-warning: #ffaa00;
    --color-error: #ff4444;

    /* Fonts */
    --font-title: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;

    /* Touch targets (Mobile-First) */
    --touch-target-min: 44px;
    --touch-target-comfortable: 48px;

    /* Layout heights */
    --header-height-mobile: 48px;
    --header-height-desktop: 60px;
    --footer-height: 48px;
    --mobile-nav-height: 56px;

    /* Brain sizes per breakpoint */
    --brain-size-mobile: min(80vw, calc(80vh - 160px));
    --brain-size-tablet: min(50vw, 350px);
    --brain-size-desktop: 420px;
    --brain-size-large: 480px;

    /* Panel widths */
    --panel-width-tablet: 300px;
    --panel-width-desktop-left: 280px;
    --panel-width-desktop-right: 320px;
    --panel-width-large-left: 320px;
    --panel-width-large-right: 360px;

    /* Theme accent (default: purple/magenta) */
    --accent-primary: #a855f7;
    --accent-secondary: #7c3aed;
    --accent-glow: rgba(168, 85, 247, 0.4);
}

/* --- Theme: Cyan --- */
[data-theme="cyan"] {
    --bg-primary: #0a1929;
    --bg-secondary: #0d2137;
    --bg-accent: #0a3d62;
    --bg-panel: rgba(13, 33, 55, 0.9);

    --neuron-cyan: #00e5ff;
    --neuron-magenta: #00bcd4;
    --neuron-green: #00e676;

    --accent-primary: #00bcd4;
    --accent-secondary: #0097a7;
    --accent-glow: rgba(0, 188, 212, 0.4);
}

/* --- Reset --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-accent) 100%);
    color: var(--text-primary);
    line-height: 1.5;
}

/* Texte muted global */
.text-muted,
[style*="text-muted"] {
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.3px;
}

/* --- App Container --- */
#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-height: 100vh;
}

/* --- Header --- */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-panel);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 100;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header__icon {
    font-size: 1.8rem;
}

.header__title {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--neuron-cyan), var(--neuron-magenta));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header__brand {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    line-height: 1;
}

.header__signature {
    font-size: 0.5rem;
    color: var(--text-muted);
    opacity: 0.5;
    font-style: italic;
    letter-spacing: 0.5px;
    margin-top: 1px;
}

.header__user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-left: auto;
    margin-right: var(--spacing-md);
}

.header__username {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--neuron-cyan);
}

.header__login-btn {
    background: transparent;
    border: 1px solid var(--neuron-cyan);
    color: var(--neuron-cyan);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.header__login-btn:hover {
    background: rgba(0, 217, 255, 0.2);
}

.header__logout-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8rem;
    padding: var(--spacing-xs);
}

.header__logout-btn:hover {
    color: var(--color-error);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* User status icon */
.header__user-icon {
    font-size: 1.2rem;
    padding: var(--spacing-xs);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
}

.header__user-icon--disconnected {
    opacity: 0.5;
    filter: grayscale(100%);
}

.header__user-icon--connected {
    opacity: 1;
    filter: none;
    color: var(--color-success);
    text-shadow: 0 0 8px var(--color-success);
}

.header__user-icon:hover {
    transform: scale(1.1);
}

/* --- Buttons --- */
.btn {
    background: var(--bg-accent);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    font-family: var(--font-body);
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--neuron-cyan);
}

.btn--icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.btn--round {
    border-radius: 50%;
    width: 40px;
    height: 40px;
}

/* --- Main Game Area --- */
.game {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    flex: 1;
    overflow: hidden;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
}

/* --- Panels --- */
.panel {
    background: var(--bg-panel);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
}

.panel__header {
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.panel__title {
    font-family: var(--font-title);
    font-size: 0.9rem;
    color: var(--neuron-cyan);
    letter-spacing: 2px;
}

/* --- Stats Panel --- */
.panel--stats {
    padding: var(--spacing-lg);
}

.stats__main {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.stats__label {
    font-family: var(--font-title);
    font-size: 0.75rem;
    color: var(--neuron-cyan);
    letter-spacing: 3px;
    margin-bottom: var(--spacing-xs);
}

.stats__value {
    font-family: var(--font-mono);
    font-size: 2.2rem;
    font-weight: 500;
    color: var(--text-primary);
    text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
    transition: var(--transition-fast);
    font-variant-numeric: tabular-nums;
    text-align: center;
}

.stats__value.pulse {
    animation: pulse-number 0.3s ease;
}

@keyframes pulse-number {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); color: var(--neuron-green); }
    100% { transform: scale(1); }
}

.stats__secondary {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 0;
}

.stats__persec {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    color: var(--neuron-green);
}

.stats__unit {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.stats__multiplier {
    text-align: center;
    font-size: 0.75rem;
    color: var(--neuron-cyan);
    font-family: var(--font-mono);
    margin-top: -2px;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

.stats__divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    margin: var(--spacing-md) 0;
}

.stats__row {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
}

.stats__label-small {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.stats__value-small {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stats__bonus {
    color: var(--neuron-green) !important;
    font-weight: 600;
}

/* Eras List */
.eras-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: var(--spacing-sm);
}

.era-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid transparent;
    transition: var(--transition-fast);
    opacity: 0.4;
}

.era-item--current {
    opacity: 1;
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--neuron-cyan);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.2);
}

.era-item--completed {
    opacity: 0.7;
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.3);
}

.era-item--locked {
    opacity: 0.35;
}

.era-item--next {
    opacity: 0.6;
    background: rgba(255, 255, 255, 0.05);
}

.era-item--available {
    opacity: 1;
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--neuron-green);
    cursor: pointer;
    animation: era-pulse 1.5s ease-in-out infinite;
}

.era-item--available:hover {
    background: rgba(0, 255, 136, 0.25);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.4);
}

@keyframes era-pulse {
    0%, 100% { box-shadow: 0 0 5px rgba(0, 255, 136, 0.3); }
    50% { box-shadow: 0 0 15px rgba(0, 255, 136, 0.5); }
}

.era-item__unlock {
    font-size: 1rem;
    animation: bounce 0.6s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

.era-item__number {
    font-family: var(--font-title);
    font-size: 0.7rem;
    font-weight: 700;
    min-width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--text-secondary);
}

.era-item--current .era-item__number {
    background: var(--neuron-cyan);
    color: var(--bg-primary);
}

.era-item--completed .era-item__number {
    background: var(--neuron-green);
    color: var(--bg-primary);
}

.era-item__info {
    flex: 1;
    min-width: 0;
}

.era-item__name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.2;
}

.era-item--locked .era-item__name {
    color: var(--text-muted);
}

.era-item__bonus {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-muted);
}

.era-item--current .era-item__bonus,
.era-item--completed .era-item__bonus {
    color: var(--neuron-green);
}

.era-item__progress {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--neuron-cyan);
}

.era-item__check {
    color: var(--neuron-green);
    font-size: 0.9rem;
}

/* Achievements Panel (under brain) */
.achievements-panel {
    width: 100%;
    max-width: 380px;
    margin-top: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: var(--bg-panel);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.achievements-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
    flex-wrap: nowrap;
    /* Meme largeur que la grille (10*32 + 9*5 = 365px) centree */
    max-width: 365px;
    margin-left: auto;
    margin-right: auto;
}

.achievements-header__left {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.achievements-header__right {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.achievements-title {
    font-family: var(--font-title);
    font-size: 0.75rem;
    color: var(--neuron-cyan);
    letter-spacing: 2px;
    white-space: nowrap;
    line-height: 1;
}

.achievements-count {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    line-height: 1;
}

.achievements-bonus {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--neuron-green);
    white-space: nowrap;
    line-height: 1;
}

.achievements-offline {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--neuron-cyan);
    white-space: nowrap;
    line-height: 1;
}

.achievements-list {
    display: grid;
    grid-template-columns: repeat(10, 32px);
    gap: 5px;
    justify-content: center;
    overflow: visible;
    padding-bottom: var(--spacing-xs);
}

.achievement {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    font-size: 1rem;
    cursor: default;
    transition: var(--transition-fast);
    position: relative;
}

.achievement--locked {
    opacity: 0.5;
    filter: grayscale(0.8);
}

.achievement--unlocked {
    opacity: 1;
    background: rgba(0, 255, 136, 0.15);
    border-color: rgba(0, 255, 136, 0.5);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.achievement:hover {
    transform: scale(1.15);
    z-index: 10;
}

.achievement__icon {
    font-size: 1.2rem;
}

/* Achievement Tooltip Zone (fixed above achievements) */
.achievement-tooltip {
    min-height: 36px;
    padding: 8px 12px;
    margin-bottom: 8px;
    background: rgba(15, 52, 96, 0.9);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: var(--radius-md);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.achievement-tooltip--visible {
    opacity: 1;
}

.achievement-tooltip:empty {
    opacity: 0;
}

/* --- Brain Container --- */
.game__center {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding-top: var(--spacing-xs);
    position: relative;
    overflow: visible;
}

.brain-container {
    position: relative;
    width: 100%;
    max-width: 350px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    margin: 0 auto;
}

#brain-canvas {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    transition: transform 0.1s ease;
}

#brain-canvas:active {
    transform: scale(0.98);
}

.brain-hint {
    display: none;
}

/* Click feedback */
.click-feedback {
    position: absolute;
    pointer-events: none;
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--neuron-green);
    text-shadow: 0 0 10px var(--neuron-green);
    opacity: 0;
    z-index: 50;
}

.click-feedback.show {
    animation: float-up 0.8s ease-out forwards;
}

@keyframes float-up {
    0% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateY(-50px) scale(1.2);
    }
}

/* --- Generators Panel --- */
.panel--generators {
    display: flex;
    flex-direction: column;
}

.panel--generators .panel__header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

/* --- Buy Mode Selector --- */
.buy-mode-selector {
    display: flex;
    gap: 4px;
    width: 100%;
    padding: 0;
    padding-bottom: var(--spacing-sm);
}

.buy-mode-btn {
    flex: 1;
    padding: 6px 4px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    text-transform: uppercase;
}

.buy-mode-btn:hover:not(:disabled):not(.buy-mode-btn--locked) {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.3);
    color: var(--text-primary);
}

.buy-mode-btn--active {
    background: rgba(0, 217, 255, 0.2) !important;
    border-color: var(--neuron-cyan) !important;
    color: var(--neuron-cyan) !important;
    box-shadow: 0 0 8px rgba(0, 217, 255, 0.3);
}

.buy-mode-btn--locked {
    opacity: 0.35;
    cursor: not-allowed;
    position: relative;
}

.buy-mode-btn--locked::after {
    content: '🔒';
    position: absolute;
    top: -6px;
    right: -4px;
    font-size: 0.55rem;
}

.buy-mode-btn[data-mode="auto"].buy-mode-btn--active {
    background: rgba(0, 255, 136, 0.2) !important;
    border-color: var(--neuron-green) !important;
    color: var(--neuron-green) !important;
    animation: auto-pulse 1.5s ease-in-out infinite;
}

@keyframes auto-pulse {
    0%, 100% { box-shadow: 0 0 5px rgba(0, 255, 136, 0.3); }
    50% { box-shadow: 0 0 15px rgba(0, 255, 136, 0.6); }
}

/* Auto mode indicator on generators */
.generator--auto-target {
    border-color: var(--neuron-green) !important;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.generator--auto-target::before {
    content: '→';
    position: absolute;
    left: -16px;
    color: var(--neuron-green);
    font-weight: bold;
    animation: arrow-blink 1s ease-in-out infinite;
}

@keyframes arrow-blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.generators {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

/* ============================================
   GENERATOR CARDS - UNIFORM BUTTON DESIGN
   ============================================ */

/* Container du générateur - 4 boutons en ligne */
.generator {
    display: grid;
    grid-template-columns: 44px 1fr 65px 75px;
    align-items: stretch;
    gap: 6px;
    padding: 6px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition-fast);
}

.generator:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(0, 217, 255, 0.2);
}

.generator--locked {
    opacity: 0.4;
}

.generator--auto-target {
    border-color: var(--neuron-green) !important;
    box-shadow: 0 0 8px rgba(0, 255, 136, 0.2);
}

/* === BASE BUTTON STYLE (tous les éléments) === */
.gen-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 6px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    transition: var(--transition-fast);
    min-height: 44px;
}

/* === BOUTON ICÔNE (gauche) === */
.gen-btn--icon {
    background: rgba(0, 217, 255, 0.08);
    border-color: rgba(0, 217, 255, 0.2);
}

.gen-btn__emoji {
    font-size: 1.4rem;
    line-height: 1;
}

/* === BOUTON INFO (centre) === */
.gen-btn--info {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px 8px;
    padding: 4px 8px;
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.08);
}

.gen-production {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--neuron-cyan);
}

.gen-bonus {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--neuron-green);
}

.gen-bonus--active {
    color: var(--neuron-green);
}

.gen-count {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-primary);
    background: rgba(0, 217, 255, 0.15);
    padding: 1px 6px;
    border-radius: 3px;
}

/* === BOUTON UPGRADE (niveau) === */
.gen-btn--upgrade {
    background: rgba(138, 43, 226, 0.1);
    border-color: rgba(138, 43, 226, 0.3);
    color: #b388ff;
    cursor: pointer;
    gap: 2px;
}

.gen-btn--upgrade:hover:not(:disabled) {
    background: rgba(138, 43, 226, 0.2);
    border-color: rgba(138, 43, 226, 0.5);
    box-shadow: 0 0 8px rgba(138, 43, 226, 0.3);
}

.gen-btn--upgrade:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.gen-btn--upgrade-affordable {
    background: rgba(138, 43, 226, 0.2);
    border-color: #b388ff;
    box-shadow: 0 0 6px rgba(138, 43, 226, 0.3);
}

.gen-btn--max {
    background: rgba(255, 215, 0, 0.1);
    border-color: rgba(255, 215, 0, 0.3);
    color: #ffd700;
}

.gen-level-badge {
    font-size: 0.7rem;
    font-weight: 700;
}

.upgrade-cost {
    font-size: 0.6rem;
    opacity: 0.8;
}

/* === BOUTON ACHAT (droite) === */
.gen-btn--buy {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.3);
    color: var(--neuron-cyan);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 700;
}

.gen-btn--buy:hover:not(:disabled) {
    background: rgba(0, 217, 255, 0.2);
    border-color: rgba(0, 217, 255, 0.5);
    box-shadow: 0 0 8px rgba(0, 217, 255, 0.3);
}

.gen-btn--buy:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.gen-btn--affordable {
    background: rgba(0, 255, 136, 0.15);
    border-color: var(--neuron-green);
    color: var(--neuron-green);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.3);
}

.gen-btn--affordable:hover:not(:disabled) {
    background: rgba(0, 255, 136, 0.25);
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.5);
}

/* === PROTECTION OVERFLOW DES NOMBRES === */
.gen-production,
.gen-count,
.gen-level-badge {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* Coûts dans les boutons - s'adapte à la largeur */
.upgrade-cost,
.generator__cost {
    display: block;
    text-align: center;
    font-size: 0.75rem;
    line-height: 1.1;
    word-break: break-all;
    overflow-wrap: anywhere;
}

/* Bouton achat - affichage du coût */
.gen-btn--buy {
    font-size: 0.8rem;
    padding: 4px 6px;
}

.gen-btn--buy .generator__cost {
    font-size: 0.8rem;
    font-weight: 700;
}

/* Bouton upgrade - plus compact */
.gen-btn--upgrade {
    padding: 3px 4px;
    gap: 1px;
}

.gen-btn--upgrade .gen-level-badge {
    font-size: 0.65rem;
}

.gen-btn--upgrade .upgrade-cost {
    font-size: 0.6rem;
    opacity: 0.85;
}

/* Adaptation automatique pour très grands nombres */
.gen-btn--info {
    overflow: hidden;
}

/* --- Footer --- */
.footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-panel);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.leaderboard-mini {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.leaderboard-mini__title {
    font-family: var(--font-title);
    font-size: 0.85rem;
    color: var(--neuron-cyan);
}

.leaderboard-mini__rank {
    color: var(--text-muted);
    font-size: 0.75rem;
}

.online-count {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.online-count__dot {
    width: 8px;
    height: 8px;
    background: var(--neuron-green);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* --- Responsive --- */

/* Large screens */
@media (min-width: 1400px) {
    .game {
        grid-template-columns: 320px 1fr 360px;
        gap: var(--spacing-lg);
        padding: var(--spacing-lg);
    }

    .brain-container {
        max-width: 400px;
    }

    .achievements-panel {
        max-width: 400px;
    }
}

/* Tablet landscape */
@media (max-width: 1200px) {
    .game {
        grid-template-columns: 250px 1fr 280px;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
    }

    .brain-container {
        max-width: 340px;
    }

    .achievements-panel {
        max-width: 340px;
    }
}

/* Tablet portrait */
@media (max-width: 1024px) {
    .game {
        grid-template-columns: 200px 1fr 240px;
    }

    .brain-container {
        max-width: 300px;
    }

    .achievements-panel {
        max-width: 300px;
        padding: var(--spacing-xs);
    }

    .achievement {
        width: 28px;
        height: 28px;
        font-size: 0.9rem;
    }

    .prestige-card {
        min-height: 50px;
        padding: 3px;
    }

    .prestige-card__text {
        font-size: 0.6rem;
    }

    .header__title {
        font-size: 1.2rem;
    }

    .stats__value {
        font-size: 1.8rem;
    }

    /* Generator - tablet */
    .generator {
        grid-template-columns: 40px 1fr 58px 68px;
        gap: 5px;
        padding: 5px;
    }

    .gen-btn {
        min-height: 40px;
    }

    .gen-btn__emoji {
        font-size: 1.2rem;
    }

    .gen-production {
        font-size: 0.8rem;
    }

    .gen-btn--buy {
        font-size: 0.75rem;
    }

    .gen-btn--buy .generator__cost {
        font-size: 0.75rem;
    }

    .gen-btn--upgrade .upgrade-cost {
        font-size: 0.55rem;
    }
}

/* Mobile landscape / Small tablet */
@media (max-width: 767px) {
    #app {
        height: 100vh;
        height: 100dvh;
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }

    .header {
        padding: var(--spacing-xs) var(--spacing-sm);
        flex-shrink: 0;
        gap: var(--spacing-xs);
        height: var(--header-height-mobile);
    }

    .header__logo {
        flex-shrink: 1;
        min-width: 0;
    }

    .header__title {
        font-size: 0.85rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* Header user area - keep visible and aligned */
    .header__user {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        margin-left: auto;
    }

    .user-info {
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
        height: 36px;
        padding: 0 var(--spacing-xs);
        background: rgba(0, 217, 255, 0.1);
        border-radius: var(--radius-sm);
    }

    .user-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 28px;
        height: 28px;
        background: linear-gradient(135deg, var(--neuron-cyan), var(--neuron-purple));
        border-radius: 50%;
        font-size: 0.85rem;
        color: white;
        box-shadow: 0 0 8px rgba(0, 217, 255, 0.4);
        flex-shrink: 0;
    }

    .user-name {
        display: inline; /* Show username on mobile */
        max-width: 70px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        font-size: 0.7rem;
    }

    .user-guest {
        display: none; /* Hide guest text on mobile */
    }

    .header__actions {
        flex-shrink: 0;
        display: flex;
        align-items: center;
        gap: var(--spacing-xs);
    }

    /* Same height for all header buttons */
    .btn--login, .btn--logout, .btn--icon {
        height: 36px;
        font-size: 0.75rem;
        padding: 0 var(--spacing-sm);
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .btn--icon {
        width: 36px;
        padding: 0;
    }

    /* New mobile layout: Brain takes most space */
    .game {
        display: flex;
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-sm);
        padding-bottom: 70px; /* Space for fixed nav (60px) + margin */
        overflow: hidden;
        flex: 1;
        min-height: 0;
        transition: transform 0.3s ease;
    }

    /* Hide footer on mobile - we have mobile nav */
    .footer {
        display: none;
    }

    /* Hide panels on mobile - accessible via mobile nav */
    .panel--stats {
        display: none;
    }

    .panel--generators {
        display: none;
    }

    /* Brain takes center stage */
    .game__center {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 0;
        transition: transform 0.3s ease;
    }

    /* Big brain on mobile! */
    .brain-container {
        width: var(--brain-size-mobile);
        max-width: 400px;
        flex-shrink: 1;
        margin: 0 auto;
    }

    .brain-hint {
        display: none;
    }

    /* Hide achievements panel on mobile - accessible via mobile nav */
    .achievements-panel {
        display: none;
    }

    /* Generator styles for mobile - 4 boutons uniformes */
    .generator {
        grid-template-columns: 36px 1fr 52px 62px;
        gap: 4px;
        padding: 4px;
    }

    .gen-btn {
        min-height: 40px;
        padding: 3px;
    }

    .gen-btn--icon {
        width: 36px;
    }

    .gen-btn__emoji {
        font-size: 1.1rem;
    }

    .gen-btn--info {
        gap: 2px 4px;
        padding: 2px 4px;
    }

    .gen-production {
        font-size: 0.75rem;
    }

    .gen-bonus {
        font-size: 0.6rem;
    }

    .gen-count {
        font-size: 0.65rem;
        padding: 1px 3px;
    }

    .gen-level-badge {
        font-size: 0.55rem;
    }

    .upgrade-cost {
        font-size: 0.5rem;
    }

    .gen-btn--buy {
        font-size: 0.7rem;
    }

    .gen-btn--buy .generator__cost {
        font-size: 0.7rem;
    }

    /* Buy mode selector on mobile */
    .buy-mode-selector {
        padding: 0 var(--spacing-sm);
        gap: 3px;
    }

    .buy-mode-btn {
        padding: 5px 2px;
        font-size: 0.6rem;
        min-width: 0;
    }

    .buy-mode-btn--locked::after {
        font-size: 0.5rem;
        top: -4px;
        right: -2px;
    }

    /* Buy mode selector dans le mobile panel */
    #mobile-buy-mode-selector {
        padding: var(--spacing-sm) 0;
        margin-bottom: var(--spacing-sm);
        background: rgba(0, 0, 0, 0.2);
        border-radius: var(--radius-md);
        width: 100%;
    }

    /* Achievement styles for mobile panel */
    .achievement {
        width: var(--touch-target-min);
        height: var(--touch-target-min);
        font-size: 1.1rem;
    }

}

/* Mobile portrait - smaller screens */
@media (max-width: 480px) {
    .header__icon {
        font-size: 1.2rem;
    }

    .header__title {
        font-size: 0.8rem;
    }

    .header__neurons-value {
        font-size: 1rem;
    }

    .header__neurons-rate {
        font-size: 0.6rem;
    }

    .btn--icon {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }

    .game {
        padding: var(--spacing-xs);
    }

    /* Keep brain big on small screens too */
    .brain-container {
        width: min(85vw, calc(85vh - 140px));
    }

    .click-feedback {
        font-size: 1rem;
    }

    /* Mobile nav smaller on tiny screens */
    .mobile-nav__label {
        font-size: 0.55rem;
    }

    /* Generator - compact on small screens */
    .generator {
        grid-template-columns: 34px 1fr 50px 50px;
        gap: 3px;
        padding: 3px;
    }

    .gen-btn {
        min-height: 36px;
        padding: 3px;
    }

    .gen-btn__emoji {
        font-size: 1rem;
    }

    .gen-production {
        font-size: 0.75rem;
    }

    .gen-bonus {
        font-size: 0.6rem;
    }

    .gen-count {
        font-size: 0.65rem;
    }

    .gen-level-badge {
        font-size: 0.55rem;
    }

    .upgrade-cost {
        font-size: 0.5rem;
    }

    .gen-btn--buy {
        font-size: 0.75rem;
    }
}

/* Very small screens */
@media (max-width: 360px) {
    .header__title {
        font-size: 0.75rem;
    }

    .header__neurons-value {
        font-size: 0.95rem;
    }

    /* Brain still fills available space */
    .brain-container {
        width: min(90vw, calc(90vh - 130px));
    }

    /* Generator - ultra compact for very small screens */
    .generator {
        grid-template-columns: 30px 1fr 45px 45px;
        gap: 2px;
        padding: 2px;
    }

    .gen-btn {
        min-height: 32px;
        padding: 2px;
    }

    .gen-btn__emoji {
        font-size: 0.9rem;
    }

    .gen-production {
        font-size: 0.7rem;
    }

    .gen-bonus {
        display: none;
    }

    .gen-count {
        font-size: 0.6rem;
    }

    .gen-level-badge {
        font-size: 0.5rem;
    }

    .upgrade-cost {
        font-size: 0.45rem;
    }

    .gen-btn--buy {
        font-size: 0.7rem;
    }

    .gen-level-badge {
        font-size: 0.5rem;
        padding: 1px 3px;
        min-width: 24px;
    }
}

/* Landscape mobile - brain + generators side by side */
@media (max-height: 500px) and (orientation: landscape) and (max-width: 767px) {
    .game {
        flex-direction: row;
        gap: var(--spacing-sm);
    }

    .game__center {
        width: 50%;
        flex: none;
    }

    .brain-container {
        width: min(45vh, 45vw);
        max-width: 250px;
    }

    /* Show generators inline in landscape */
    .panel--generators {
        display: flex;
        width: 50%;
        max-height: calc(100vh - var(--header-height-mobile) - var(--mobile-nav-height));
        overflow-y: auto;
    }

    .mobile-nav {
        height: 44px;
    }

    .mobile-nav__label {
        display: none;
    }

    .mobile-panel {
        height: 35vh; /* Even smaller in landscape to keep brain visible */
    }

    .panel--generators {
        order: 3;
        max-height: none;
    }

    .footer {
        display: none;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn:hover {
        background: var(--bg-accent);
        border-color: rgba(255, 255, 255, 0.2);
    }

    .generator:hover {
        background: rgba(255, 255, 255, 0.05);
        border-color: transparent;
    }

    .generator__buy:active:not(:disabled) {
        background: rgba(0, 217, 255, 0.3);
        transform: scale(0.95);
    }

    #brain-canvas {
        -webkit-tap-highlight-color: transparent;
    }
}

/* --- Modal --- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal__backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
}

.modal__content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 400px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    overflow-x: hidden;
}

.modal__title {
    font-family: var(--font-title);
    font-size: 1.2rem;
    color: var(--neuron-cyan);
    margin-bottom: var(--spacing-md);
}

.modal__text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.modal__close {
    margin-top: var(--spacing-lg);
    width: 100%;
}

/* Bot list */
.bot-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.bot-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
}

.bot-item:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: var(--neuron-cyan);
}

.bot-item__name {
    font-weight: 500;
}

.bot-item__username {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.bot-item__arrow {
    color: var(--neuron-cyan);
}

/* --- Settings Modal --- */
.settings-section {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.settings-section:last-of-type {
    border-bottom: none;
}

.settings-section--disabled {
    opacity: 0.5;
    pointer-events: none;
}

.settings-section--danger {
    background: rgba(255, 68, 68, 0.1);
    margin: var(--spacing-md) calc(-1 * var(--spacing-xl));
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-md);
    border-bottom: none;
}

.settings-section--account {
    background: rgba(0, 217, 255, 0.1);
    margin: var(--spacing-md) calc(-1 * var(--spacing-xl));
    padding: var(--spacing-lg) var(--spacing-xl);
    border-radius: var(--radius-md);
}

.settings-account-info {
    margin-bottom: var(--spacing-md);
}

.settings-username {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--neuron-cyan);
}

.settings-label {
    display: block;
    font-family: var(--font-title);
    font-size: 0.85rem;
    color: var(--neuron-cyan);
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.settings-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.settings-hint {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: var(--spacing-xs);
}

/* Language buttons */
.settings-languages {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    width: 100%;
}

.lang-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    white-space: nowrap;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.lang-btn:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.3);
    color: var(--text-primary);
}

.lang-btn--active {
    background: rgba(0, 217, 255, 0.2);
    border-color: var(--neuron-cyan);
    color: var(--neuron-cyan);
    font-weight: 600;
}

/* Theme selector */
.settings-themes {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.theme-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.theme-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
}

.theme-btn--active {
    background: var(--accent-glow);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    font-weight: 600;
}

/* Share buttons */
.settings-share {
    display: flex;
    gap: var(--spacing-sm);
}

.share-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.share-btn--x {
    background: #000;
    color: #fff;
}

.share-btn--x:hover {
    background: #333;
}

.share-btn--facebook {
    background: #1877f2;
    color: #fff;
    font-family: Georgia, serif;
}

.share-btn--facebook:hover {
    background: #0d65d9;
}

.share-btn--copy {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.share-btn--copy:hover {
    background: rgba(255, 255, 255, 0.2);
}

.share-btn--copy.copied {
    background: var(--color-success);
    color: #000;
}

/* Volume slider */
.settings-volume {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.volume-slider {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--neuron-cyan);
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--neuron-cyan);
    border-radius: 50%;
    border: none;
    cursor: pointer;
}

.volume-value {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    min-width: 40px;
}

.volume-slider:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Sound toggle button */
.settings-sound {
    margin-bottom: var(--spacing-sm);
}

.sound-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 217, 255, 0.15);
    border: 1px solid var(--neuron-cyan);
    border-radius: var(--radius-md);
    color: var(--neuron-cyan);
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sound-toggle:hover {
    background: rgba(0, 217, 255, 0.25);
}

.sound-toggle--off {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
    color: var(--text-muted);
}

.sound-toggle__icon {
    font-size: 1.1rem;
}

.settings-label--sub {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-xs);
}

/* Danger button */
.btn--danger {
    background: rgba(255, 68, 68, 0.2);
    border: 1px solid var(--color-error);
    color: var(--color-error);
    width: 100%;
}

.btn--danger:hover {
    background: rgba(255, 68, 68, 0.4);
    border-color: var(--color-error);
}

/* --- Auth Modal --- */
.modal__content--auth {
    max-width: 400px;
}

.auth-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-title);
    font-size: 0.9rem;
    letter-spacing: 1px;
    transition: var(--transition-fast);
}

.auth-tab:hover {
    background: rgba(255, 255, 255, 0.1);
}

.auth-tab--active {
    background: rgba(0, 217, 255, 0.2);
    border-color: var(--neuron-cyan);
    color: var(--neuron-cyan);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group input {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--neuron-cyan);
    background: rgba(0, 217, 255, 0.05);
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-error {
    color: var(--color-error);
    font-size: 0.85rem;
    min-height: 1.2em;
}

.btn--primary {
    background: rgba(0, 217, 255, 0.2);
    border: 1px solid var(--neuron-cyan);
    color: var(--neuron-cyan);
}

.btn--primary:hover {
    background: rgba(0, 217, 255, 0.3);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.3);
}

.btn--full {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.auth-guest {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.auth-guest p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* --- Leaderboard Modal (Floating Window) --- */
#leaderboard-modal {
    pointer-events: none; /* Laisse passer les clics */
}

#leaderboard-modal .modal__backdrop {
    display: none; /* Pas de fond bloquant */
}

.modal__content--leaderboard {
    pointer-events: auto; /* Seulement la fenêtre reçoit les clics */
    max-width: 400px;
    cursor: default;
    user-select: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.modal__content--leaderboard.dragging {
    opacity: 0.95;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    cursor: grab;
}

.modal__header:active {
    cursor: grabbing;
}

.modal__header .modal__title {
    margin: 0;
}

.modal__close-x {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 1.4rem;
    line-height: 1;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal__close-x:hover {
    background: rgba(255, 100, 100, 0.2);
    border-color: rgba(255, 100, 100, 0.4);
    color: #ff6b6b;
}

#refresh-leaderboard {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.leaderboard {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    max-height: 400px;
    overflow-y: auto;
    margin-bottom: var(--spacing-md);
}

.leaderboard-item {
    display: grid;
    grid-template-columns: 40px 1fr auto;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.leaderboard-item:hover {
    background: rgba(255, 255, 255, 0.06);
}

.leaderboard-item--top1 {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.15), rgba(255, 215, 0, 0.05));
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.leaderboard-item--top2 {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.15), rgba(192, 192, 192, 0.05));
    border: 1px solid rgba(192, 192, 192, 0.3);
}

.leaderboard-item--top3 {
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.15), rgba(205, 127, 50, 0.05));
    border: 1px solid rgba(205, 127, 50, 0.3);
}

.leaderboard-item--you,
.leaderboard-item--current {
    background: rgba(0, 217, 255, 0.15);
    border: 1px solid var(--neuron-cyan);
}

.leaderboard-separator {
    text-align: center;
    padding: var(--spacing-xs) 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 4px;
}

.leaderboard-rank {
    font-family: var(--font-title);
    font-size: 0.9rem;
    font-weight: 700;
    text-align: center;
}

.leaderboard-name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.leaderboard-score {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--neuron-green);
}

.leaderboard-online {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--neuron-green);
    border-radius: 50%;
    margin-left: var(--spacing-xs);
    animation: pulse 2s ease-in-out infinite;
}

.leaderboard-player {
    padding: var(--spacing-md);
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
    border-radius: var(--radius-md);
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.leaderboard-player--guest {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

/* --- Prestige Confirmation Modal --- */
.modal__content--prestige {
    max-width: 420px;
    text-align: center;
}

.prestige-modal__title {
    font-size: 1.5rem;
    color: var(--color-warning) !important;
    margin-bottom: var(--spacing-lg);
}

.prestige-modal__section {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

.prestige-modal__gain {
    background: linear-gradient(135deg, rgba(0, 255, 136, 0.15), rgba(0, 255, 136, 0.05));
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.prestige-modal__lose {
    background: linear-gradient(135deg, rgba(255, 68, 68, 0.15), rgba(255, 68, 68, 0.05));
    border: 1px solid rgba(255, 68, 68, 0.3);
}

/* --- Session Invalid Alert --- */
.session-alert-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.session-alert {
    background: var(--bg-panel);
    border: 1px solid rgba(255, 200, 50, 0.4);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 400px;
    text-align: center;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.session-alert__icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.session-alert__title {
    color: var(--color-warning);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

.session-alert__message {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

.session-alert__btn {
    min-width: 120px;
}

.prestige-modal__subtitle {
    font-family: var(--font-title);
    font-size: 0.85rem;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    color: var(--neuron-green);
}

.prestige-modal__warning {
    color: var(--color-error) !important;
}

.prestige-modal__pp {
    font-family: var(--font-title);
    font-size: 2rem;
    color: var(--neuron-green);
    font-weight: 700;
}

.prestige-modal__bonus {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
}

.prestige-modal__highlight {
    color: var(--neuron-green);
    font-weight: 600;
}

.prestige-modal__list {
    list-style: none;
    text-align: left;
    padding-left: var(--spacing-md);
}

.prestige-modal__list li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.prestige-modal__list li::before {
    content: '×';
    position: absolute;
    left: -16px;
    color: var(--color-error);
    font-weight: bold;
}

.prestige-modal__note {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 255, 136, 0.1);
    border-left: 3px solid var(--color-success);
    color: var(--color-success);
    font-size: 0.9rem;
    text-align: left;
}

.prestige-modal__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 1.1rem;
    font-weight: 600;
}

.btn--secondary {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-secondary);
}

.btn--secondary:hover {
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--text-primary);
}

/* --- User Area (Header) --- */
.header__user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
    background: rgba(0, 217, 255, 0.1);
    border-radius: var(--radius-sm);
    height: 36px; /* Same height as buttons */
}

.user-icon {
    display: none; /* Hidden on desktop, shown on mobile */
}

.user-name {
    font-weight: 500;
    color: var(--neuron-cyan);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.85rem;
}

.user-guest {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.btn--login {
    background: rgba(0, 255, 136, 0.15);
    border: 1px solid var(--neuron-green);
    color: var(--neuron-green);
    padding: 0 var(--spacing-md);
    font-size: 0.85rem;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn--login:hover {
    background: rgba(0, 255, 136, 0.25);
}

.btn--logout {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-muted);
    padding: 0 var(--spacing-sm);
    font-size: 0.8rem;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.btn--logout:hover {
    border-color: var(--color-error);
    color: var(--color-error);
}

/* Leaderboard mini clickable */
.leaderboard-mini {
    cursor: pointer;
    transition: var(--transition-fast);
}

.leaderboard-mini:hover {
    color: var(--neuron-cyan);
}

/* ============================================
   MOBILE-FIRST RESPONSIVE SYSTEM
   ============================================ */

/* --- Mobile Neuron Counter in Header --- */
.header__neurons-mobile {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-left: auto;
    margin-right: var(--spacing-sm);
}

.header__neurons-value {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--neuron-cyan);
    line-height: 1.2;
}

.header__neurons-rate {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--neuron-green);
    line-height: 1;
}

/* --- Mobile Bottom Navigation --- */
.mobile-nav {
    display: none; /* Hidden by default (desktop) */
    visibility: hidden;
}

/* Mobile nav visible on small screens */
@media (max-width: 767px) {
    .mobile-nav {
        display: flex !important;
        visibility: visible !important;
        opacity: 1 !important;
        justify-content: space-around;
        align-items: center;
        height: 60px;
        min-height: 60px;
        background: linear-gradient(180deg, rgba(22, 33, 62, 0.98) 0%, rgba(15, 25, 50, 0.99) 100%);
        border-top: 3px solid var(--neuron-cyan);
        padding: 0 var(--spacing-sm);
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        z-index: 99999;
        box-shadow: 0 -5px 30px rgba(0, 0, 0, 0.7), 0 -2px 10px rgba(0, 217, 255, 0.3);
        transform: translateZ(0); /* Force GPU layer */
        -webkit-transform: translateZ(0);
    }
}

.mobile-nav__tab {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    max-width: 60px; /* Reduced for 6 tabs */
    height: var(--touch-target-comfortable);
    min-width: 0; /* Allow shrinking */
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
    padding: var(--spacing-xs) 1px;
    border-radius: var(--radius-sm);
}

.mobile-nav__tab:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.mobile-nav__tab:active,
.mobile-nav__tab--active {
    color: var(--neuron-cyan);
    background: rgba(0, 217, 255, 0.15);
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.3);
}

/* Pulse animation on first load to draw attention */
@keyframes tab-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.mobile-nav__tab:first-child {
    animation: tab-pulse 2s ease-in-out 1s 3; /* Pulse 3 times after 1s delay */
}

/* --- Mobile Nav Indicator (arrow pointing up) --- */
.mobile-nav-indicator {
    display: none; /* Hidden by default (desktop) */
}

@media (max-width: 767px) {
    .mobile-nav-indicator {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        position: fixed;
        bottom: 60px; /* Above the nav */
        left: 50%;
        transform: translateX(-50%);
        z-index: 99998;
        padding: var(--spacing-xs) var(--spacing-md);
        background: linear-gradient(180deg, rgba(0, 217, 255, 0.1) 0%, transparent 100%);
        border-radius: var(--radius-md) var(--radius-md) 0 0;
        pointer-events: none;
        animation: indicator-float 2s ease-in-out infinite;
    }

    .mobile-nav-indicator__arrow {
        font-size: 1rem;
        color: var(--neuron-cyan);
        opacity: 0.8;
        animation: arrow-bounce 1s ease-in-out infinite;
    }

    .mobile-nav-indicator__text {
        font-size: 0.6rem;
        color: var(--text-muted);
        text-transform: uppercase;
        letter-spacing: 1px;
        font-family: var(--font-body), serif;
        margin-top: 2px;
    }

    @keyframes arrow-bounce {
        0%, 100% { transform: translateY(0); }
        50% { transform: translateY(-4px); }
    }

    @keyframes indicator-float {
        0%, 100% { opacity: 0.7; }
        50% { opacity: 1; }
    }

    /* Hide indicator when panel is open */
    .mobile-panel--open ~ .mobile-nav-indicator,
    .mobile-nav-indicator--hidden {
        display: none !important;
    }
}

.mobile-nav__icon {
    font-size: 1.3rem;
    line-height: 1;
}

.mobile-nav__label {
    font-size: 0.6rem;
    margin-top: 2px;
    font-family: var(--font-body), serif;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Mobile Sliding Panel --- */
.mobile-panel {
    position: fixed;
    bottom: 60px; /* Height of mobile nav */
    left: 0;
    right: 0;
    height: 45vh; /* Panel height */
    max-height: calc(100vh - 48px - 60px - 120px); /* header - nav - brain space */
    background: var(--bg-secondary);
    border-top: 2px solid var(--neuron-cyan);
    border-top-left-radius: var(--radius-lg);
    border-top-right-radius: var(--radius-lg);
    transform: translateY(100%);
    transition: transform 0.3s ease;
    z-index: 9998; /* Below nav */
    display: none; /* Hidden by default */
    flex-direction: column;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.5);
}

/* When panel is open, shift brain up to stay visible */
body.mobile-panel-active .game__center {
    transform: translateY(-21vh);
    transition: transform 0.3s ease;
}

.mobile-panel--open {
    display: flex !important;
    visibility: visible !important;
    transform: translateY(0);
}

.mobile-panel__header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    flex-shrink: 0;
}

.mobile-panel__title {
    font-family: var(--font-title), serif;
    font-size: 0.9rem;
    color: var(--neuron-cyan);
    letter-spacing: 2px;
    margin: 0;
}

.mobile-panel__close {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.mobile-panel__close:active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.mobile-panel__content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    -webkit-overflow-scrolling: touch;
}

/* Mobile panel backdrop */
.mobile-panel-backdrop {
    display: none; /* No backdrop - keep brain visible */
}

.mobile-panel-backdrop--visible {
    opacity: 1;
    pointer-events: auto;
}

/* --- Hide desktop elements on mobile (base state) --- */
/* By default (mobile), hide panels and show mobile nav */

/* --- Mobile Stats Panel Content --- */
.mobile-stats {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-stats__item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.mobile-stats__label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.mobile-stats__value {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--text-primary);
}

.mobile-stats__value--primary {
    font-size: 1.3rem;
    color: var(--neuron-cyan);
    font-weight: 600;
}

.mobile-stats__value--bonus {
    color: var(--neuron-green);
}

.mobile-stats__divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-xs) 0;
}

/* --- Mobile Prestige --- */
.mobile-prestige {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
}

.mobile-prestige--locked {
    text-align: center;
    padding: var(--spacing-xl);
}

.mobile-prestige__lock {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.mobile-prestige__locked-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.mobile-prestige__hint {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.mobile-prestige__current {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(255, 170, 0, 0.1);
    border: 1px solid rgba(255, 170, 0, 0.3);
    border-radius: var(--radius-md);
}

.mobile-prestige__pp-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mobile-prestige__pp-value {
    font-family: var(--font-title);
    font-size: 2rem;
    color: var(--color-warning);
    font-weight: 700;
}

.mobile-prestige__bonus {
    font-size: 0.9rem;
    color: var(--neuron-green);
}

.mobile-prestige__divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.mobile-prestige__gain {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: var(--radius-md);
}

.mobile-prestige__gain-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.mobile-prestige__gain-value {
    font-family: var(--font-title);
    font-size: 1.5rem;
    color: var(--neuron-green);
    font-weight: 700;
}

.mobile-prestige__gain-bonus {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.mobile-prestige__warning {
    padding: var(--spacing-md);
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid rgba(255, 68, 68, 0.3);
    border-radius: var(--radius-md);
}

.mobile-prestige__warning-title {
    display: block;
    font-size: 0.8rem;
    color: var(--color-error);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.mobile-prestige__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-prestige__list li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.mobile-prestige__list li::before {
    content: '×';
    position: absolute;
    left: 0;
    color: var(--color-error);
    font-weight: bold;
}

.mobile-prestige__btn {
    width: 100%;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-error), #cc0000);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-family: var(--font-title);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
}

.mobile-prestige__btn:active {
    transform: scale(0.98);
}

.mobile-prestige__btn--disabled {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    cursor: not-allowed;
}

/* --- Mobile Leaderboard --- */
.mobile-leaderboard {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mobile-leaderboard__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.mobile-leaderboard__item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    border-left: 3px solid transparent;
}

.mobile-leaderboard__item--top1 {
    background: rgba(255, 215, 0, 0.1);
    border-left-color: gold;
}

.mobile-leaderboard__item--top2 {
    background: rgba(192, 192, 192, 0.1);
    border-left-color: silver;
}

.mobile-leaderboard__item--top3 {
    background: rgba(205, 127, 50, 0.1);
    border-left-color: #cd7f32;
}

.mobile-leaderboard__item--current {
    background: rgba(0, 217, 255, 0.15);
    border-left-color: var(--neuron-cyan);
}

.mobile-leaderboard__rank {
    font-size: 1rem;
    min-width: 32px;
    text-align: center;
}

.mobile-leaderboard__name {
    flex: 1;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.mobile-leaderboard__online {
    width: 8px;
    height: 8px;
    background: var(--neuron-green);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--neuron-green);
}

.mobile-leaderboard__score {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--neuron-cyan);
}

.mobile-leaderboard__divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: var(--spacing-sm) 0;
}

.mobile-leaderboard__separator {
    text-align: center;
    padding: var(--spacing-xs) 0;
    color: var(--text-muted);
    font-size: 0.75rem;
    letter-spacing: 4px;
}

.mobile-leaderboard__player {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(0, 217, 255, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.mobile-leaderboard__player-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    flex: 1;
}

.mobile-leaderboard__player-name {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--neuron-green);
    font-weight: 600;
}

.mobile-leaderboard__player-rank {
    font-family: var(--font-title);
    font-size: 1.2rem;
    color: var(--neuron-cyan);
}

.mobile-leaderboard__player-score {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.mobile-leaderboard__guest {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* --- Mobile Brain Stats (above brain) --- */
.mobile-brain-stats {
    display: none; /* Hidden by default (desktop) */
}

/* Hide on tablet+ */
@media (min-width: 768px) {
    .mobile-nav,
    .mobile-panel,
    .mobile-panel-backdrop,
    .header__neurons-mobile,
    .mobile-brain-stats {
        display: none !important;
    }
}

/* Show on mobile */
@media (max-width: 767px) {
    .mobile-brain-stats {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 0;
        margin-bottom: -40px; /* Chiffres proches du cerveau - animations se superposent */
        flex-shrink: 0;
    }

    .mobile-brain-stats__neurons {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .mobile-brain-stats__value {
        font-family: var(--font-mono);
        font-size: 2.5rem;
        font-weight: 700;
        color: var(--neuron-cyan);
        line-height: 1;
        text-shadow: 0 0 20px rgba(0, 217, 255, 0.5);
        word-break: break-word;
        max-width: 90vw;
        text-align: center;
    }

    .mobile-brain-stats__label {
        font-family: var(--font-title);
        font-size: 0.7rem;
        color: var(--text-muted);
        letter-spacing: 3px;
        margin-top: 4px;
    }

    .mobile-brain-stats__rate {
        font-family: var(--font-mono);
        font-size: 1rem;
        color: var(--neuron-green);
        margin-top: var(--spacing-xs);
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 2px;
    }

    .mobile-brain-stats__multiplier {
        font-family: var(--font-mono);
        font-size: 0.85rem;
        color: var(--text-muted);
    }

    /* Hide header neurons on mobile since we have brain stats */
    .header__neurons-mobile {
        display: none !important;
    }

    /* Adjust brain container size */
    .brain-container {
        width: min(70vw, calc(60vh - 200px));
        max-width: 350px;
    }
}

/* ============================================
   PRESTIGE PANEL (utilise achievements-panel comme base)
   ============================================ */

/* Couleurs spécifiques prestige (appliquées sur achievements-panel) */
.prestige-title-color {
    color: #ffd700 !important;
    font-size: 0.65rem !important;
    letter-spacing: 1px !important;
}

.prestige-count-color {
    color: #ffd700 !important;
    font-weight: 600;
    font-size: 0.7rem !important;
}

/* Contenu prestige simplifie */
.prestige-simple {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
    /* Meme largeur que le header (365px) centree */
    max-width: 365px;
    margin-left: auto;
    margin-right: auto;
}

.prestige-formula {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex: 1;
    min-width: 0;
}

.prestige-hint {
    color: var(--text-muted);
    font-size: 0.65rem;
    display: block;
    margin-top: 2px;
}

.prestige-speed-color {
    color: #ffd700 !important;
    font-size: 0.65rem !important;
}

/* Bouton prestige */
.prestige-btn {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 140, 0, 0.2) 100%);
    border: 1px solid rgba(255, 215, 0, 0.5);
    border-radius: var(--radius-sm);
    color: #ffd700;
    font-family: var(--font-title);
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 1px;
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
    flex-shrink: 0;
}

.prestige-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, rgba(255, 215, 0, 0.3) 0%, rgba(255, 140, 0, 0.3) 100%);
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.3);
    transform: scale(1.02);
}

.prestige-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.prestige-btn--locked {
    opacity: 0.3;
}

/* Bouton icon-only sur desktop */
.prestige-btn--icon-only {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 1.1rem;
    min-width: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prestige-btn--icon-only .prestige-btn__text {
    display: none; /* Masquer le texte sur desktop */
}

/* Message prestige verrouillé */
.prestige-locked {
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
    #prestige-panel {
        max-width: 320px;
    }

    .prestige-card {
        padding: var(--spacing-xs);
        min-height: 60px;
    }

    .prestige-card__text {
        font-size: 0.65rem;
    }

    .prestige-card__value {
        font-size: 0.8rem;
    }
}

/* Mobile - cacher comme le bloc succès */
@media (max-width: 767px) {
    #prestige-panel {
        display: none;
    }
}

/* Upgrades permanents */
.upgrades-section {
    margin-top: var(--spacing-md);
}

.upgrades-title {
    font-family: var(--font-title);
    font-size: 0.75rem;
    color: #ffd700;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-sm);
}

.upgrade-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(255, 215, 0, 0.05);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
}

.upgrade-item__icon {
    font-size: 1.2rem;
}

.upgrade-item__info {
    flex: 1;
    min-width: 0;
}

.upgrade-item__name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.upgrade-item__bonus {
    font-size: 0.7rem;
    color: var(--neuron-green);
    font-family: var(--font-mono);
}

.upgrade-btn {
    background: rgba(255, 215, 0, 0.2);
    border: 1px solid rgba(255, 215, 0, 0.4);
    color: #ffd700;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 50px;
}

.upgrade-btn:hover:not(:disabled) {
    background: rgba(255, 215, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.upgrade-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.upgrade-level {
    font-weight: 700;
    font-size: 0.75rem;
}

.upgrade-cost {
    font-size: 0.65rem;
    color: var(--text-muted);
}

/* Mobile prestige adjustments */
@media (max-width: 767px) {
    .prestige-section {
        padding: var(--spacing-sm);
    }

    .prestige-pp {
        font-size: 1.2rem;
    }

    .prestige-row {
        font-size: 0.75rem;
    }

    .btn--prestige {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .upgrade-item {
        padding: var(--spacing-xs);
    }

    .upgrade-item__name {
        font-size: 0.75rem;
    }

    .upgrade-btn {
        min-width: 45px;
        padding: 3px 6px;
    }
}