/* ==========================================================================
   STYLE SYSTEM - NÉON 4D TIC-TAC-TOE
   Esthétique : Cyberpunk Dark Mode Premium, Néon HSL & Micro-animations
   ========================================================================== */

/* Variables de thème globales */
:root {
    --bg-color: #020206;
    --card-bg: rgba(7, 7, 18, 0.75);
    --border-color: rgba(0, 240, 255, 0.15);
    
    /* Couleurs néon */
    --neon-cyan: #00f0ff;
    --neon-magenta: #ff007f;
    --neon-green: #39ff14;
    --neon-gold: #ffb700;
    --neon-red: #ff3333;
    
    /* Lueurs néon (Text & Shadows) */
    --cyan-glow-filter: drop-shadow(0 0 4px rgba(0, 240, 255, 0.6)) drop-shadow(0 0 10px rgba(0, 240, 255, 0.3));
    --magenta-glow-filter: drop-shadow(0 0 4px rgba(ff, 0, 7f, 0.6)) drop-shadow(0 0 10px rgba(ff, 0, 7f, 0.3));
    --green-glow-filter: drop-shadow(0 0 4px rgba(57, 255, 20, 0.6)) drop-shadow(0 0 10px rgba(57, 255, 20, 0.3));
    
    /* Constantes de position de Zoom */
    --zoom-scale: 1;
    --zoom-x: 0%;
    --zoom-y: 0%;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
}

body {
    background-color: var(--bg-color);
    color: #e2e8f0;
    font-family: 'Inter', -apple-system, sans-serif;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    position: relative;
}

/* Canvas d'arrière-plan */
#ambient-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    opacity: 0.8;
}

#effects-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 99;
    pointer-events: none;
}

/* ==========================================================================
   SCREENS NAVIGATION (SPA)
   ========================================================================== */

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    overflow-y: auto;
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.screen.hidden {
    display: none !important;
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

/* ==========================================================================
   GLITCH & TYPO FUTURISTE
   ========================================================================== */

.cyber-header {
    text-align: center;
    margin-bottom: 30px;
}

.glitch-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 900;
    letter-spacing: 5px;
    color: #fff;
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.5), 0 0 20px rgba(0, 240, 255, 0.2);
    position: relative;
    text-transform: uppercase;
}

/* Effet clignotant néon cyberpunk */
@keyframes neon-flicker {
    0%, 19%, 21%, 23%, 25%, 54%, 56%, 100% {
        text-shadow: 0 0 4px rgba(0, 240, 255, 0.6), 0 0 10px rgba(0, 240, 255, 0.4), 0 0 20px rgba(0, 240, 255, 0.2);
    }
    20%, 24%, 55% {
        text-shadow: none;
        opacity: 0.5;
    }
}

.animate-glitch .glitch-text {
    animation: neon-flicker 5s infinite alternate;
}

.subtitle-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    color: var(--neon-magenta);
    letter-spacing: 8px;
    font-weight: 700;
    margin-top: 5px;
    text-shadow: 0 0 5px rgba(255, 0, 127, 0.4);
    text-transform: uppercase;
}

/* ==========================================================================
   CARDS & PANELS (GLASSMORPHISM)
   ========================================================================== */

.cyber-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 25px;
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5), inset 0 0 15px rgba(0, 240, 255, 0.05);
    position: relative;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.cyber-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
}

.cyber-card.magenta-glow::before {
    background: linear-gradient(90deg, transparent, var(--neon-magenta), transparent);
}

.cyan-glow {
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.4);
    color: var(--neon-cyan);
}

.magenta-glow {
    text-shadow: 0 0 8px rgba(255, 0, 127, 0.4);
    color: var(--neon-magenta);
}

.green-glow {
    text-shadow: 0 0 8px rgba(57, 255, 20, 0.4);
    color: var(--neon-green);
}

.card-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
    margin-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Layout de grille du menu */
.menu-container {
    width: 100%;
    max-width: 1200px;
    z-index: 10;
}

.menu-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 30px;
    margin-bottom: 30px;
}

@media (max-width: 900px) {
    .menu-grid {
        grid-template-columns: 1fr;
    }
}

.menu-grid-single {
    display: flex;
    justify-content: center;
    width: 100%;
    margin-bottom: 30px;
}

.menu-grid-single #panel-config {
    width: 100%;
    max-width: 800px;
    padding: 40px;
}

.card-wide {
    grid-column: span 2;
}

@media (max-width: 900px) {
    .card-wide {
        grid-column: span 1;
    }
}

/* Formulaires et entrées */
.form-group {
    margin-bottom: 20px;
}

.cyber-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.9rem;
    color: #a0aec0;
    letter-spacing: 1px;
    display: block;
    margin-bottom: 8px;
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 4px;
    padding: 4px 12px;
    box-shadow: inset 0 0 8px rgba(0, 240, 255, 0.05);
}

.input-wrapper:focus-within {
    border-color: var(--neon-cyan);
    box-shadow: 0 0 10px rgba(0, 240, 255, 0.2), inset 0 0 8px rgba(0, 240, 255, 0.1);
}

.prompt-symbol {
    font-family: 'Share Tech Mono', monospace;
    color: var(--neon-cyan);
    margin-right: 10px;
    font-weight: 700;
}

.cyber-input {
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    width: 100%;
    letter-spacing: 1px;
}

/* ==========================================================================
   INTERACTIVE BUTTONS (CYBERPUNK GLOW)
   ========================================================================== */

.btn-cyber {
    position: relative;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #a0aec0;
    padding: 15px 20px;
    border-radius: 4px;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    cursor: pointer;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.btn-cyber .btn-desc {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.5px;
    color: #718096;
    margin-top: 4px;
    text-transform: uppercase;
}

/* Hover & Active sur boutons */
.btn-cyber:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 15px rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.btn-cyber.active {
    border-color: var(--neon-cyan);
    color: var(--neon-cyan);
    background: rgba(0, 240, 255, 0.05);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.15), inset 0 0 10px rgba(0, 240, 255, 0.05);
}

.btn-cyber.active .btn-desc {
    color: #00b0ff;
}

.btn-cyber:active {
    transform: translateY(1px);
}

/* Bouton Primaire (Grand Lancement) */
.btn-primary {
    background: rgba(57, 255, 20, 0.03);
    border-color: rgba(57, 255, 20, 0.3);
    color: var(--neon-green);
    width: 100%;
    margin-top: 15px;
    padding: 20px;
    font-size: 1.1rem;
    letter-spacing: 3px;
    text-shadow: 0 0 5px rgba(57, 255, 20, 0.3);
}

.btn-primary:hover {
    border-color: var(--neon-green);
    background: rgba(57, 255, 20, 0.08);
    box-shadow: 0 0 25px rgba(57, 255, 20, 0.25), inset 0 0 10px rgba(57, 255, 20, 0.1);
    color: #fff;
    text-shadow: 0 0 8px var(--neon-green);
}

.btn-primary.green-glow::before {
    background: linear-gradient(90deg, transparent, var(--neon-green), transparent);
}

/* Sélecteur de Mode Grille */
.mode-selector-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 25px;
}

/* ==========================================================================
   AI DIFFICULTY SLIDER & LABELS
   ========================================================================== */

.difficulty-wrapper {
    margin-top: 25px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.difficulty-slider-container {
    margin: 15px 0;
    position: relative;
}

/* Curseur Custom */
.cyber-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
    outline: none;
    margin-bottom: 15px;
}

.cyber-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--neon-green);
    cursor: pointer;
    box-shadow: 0 0 10px var(--neon-green);
    border: 2px solid #fff;
    transition: transform 0.1s;
}

.cyber-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.difficulty-labels {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.diff-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8rem;
    color: #4a5568;
    cursor: pointer;
    transition: all 0.2s;
}

.diff-label.active {
    color: var(--neon-green);
    text-shadow: 0 0 5px rgba(57, 255, 20, 0.5);
    font-weight: bold;
}

.ai-desc-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    padding: 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    color: #a0aec0;
    min-height: 52px;
    line-height: 1.4;
}

/* ==========================================================================
   STATS BOXES
   ========================================================================== */

.stats-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    padding: 15px;
    margin-top: 15px;
}

.stats-header {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 1px;
    color: #a0aec0;
    margin-bottom: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    padding-bottom: 6px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    color: #718096;
    margin-bottom: 8px;
}

.stat-row:last-child {
    margin-bottom: 0;
}

.stat-val {
    font-weight: 700;
    color: #fff;
}

.cyan-text { color: var(--neon-cyan) !important; text-shadow: 0 0 5px rgba(0, 240, 255, 0.3); }
.magenta-text { color: var(--neon-magenta) !important; text-shadow: 0 0 5px rgba(255, 0, 127, 0.3); }
.green-text { color: var(--neon-green) !important; text-shadow: 0 0 5px rgba(57, 255, 20, 0.3); }
.gold-text { color: var(--neon-gold) !important; text-shadow: 0 0 5px rgba(255, 183, 0, 0.3); }

/* Guide de Combat */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 900px) {
    .guide-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 550px) {
    .guide-grid {
        grid-template-columns: 1fr;
    }
}

.guide-step {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    padding: 15px;
    border-left: 2px solid rgba(255, 255, 255, 0.05);
}

.step-num {
    font-family: 'Orbitron', sans-serif;
    font-weight: 900;
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.step-text {
    font-size: 0.8rem;
    line-height: 1.5;
    color: #718096;
}

.step-text strong {
    color: #cbd5e0;
}

/* ==========================================================================
   GAME HUD HEADER
   ========================================================================== */

.hud-header {
    width: 100%;
    max-width: 1200px;
    display: grid;
    grid-template-columns: 280px 1fr 280px;
    gap: 20px;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 20px;
    margin-bottom: 20px;
    z-index: 10;
}

@media (max-width: 950px) {
    .hud-header {
        grid-template-columns: 1fr 1fr;
    }
    .hud-center-status {
        grid-column: span 2;
        order: 3;
        margin-top: 10px;
    }
}

.hud-player {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 6px;
    padding: 10px 15px;
    position: relative;
    overflow: hidden;
    transition: all 0.3s;
}

.player-glow-bar {
    position: absolute;
    left: 0;
    top: 0;
    width: 4px;
    height: 100%;
    opacity: 0.4;
    transition: opacity 0.3s, width 0.3s;
}

.hud-player.active .player-glow-bar {
    opacity: 1;
    width: 6px;
}

.cyan-bg { background-color: var(--neon-cyan); box-shadow: 0 0 10px var(--neon-cyan); }
.magenta-bg { background-color: var(--neon-magenta); box-shadow: 0 0 10px var(--neon-magenta); }

.hud-player-meta {
    display: flex;
    flex-direction: column;
}

.hud-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    color: #4a5568;
    letter-spacing: 1px;
}

.hud-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.hud-symbol {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.2rem;
    font-weight: 900;
    line-height: 1;
}

.cyan-glow-text {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.7);
}

.magenta-glow-text {
    color: var(--neon-magenta);
    text-shadow: 0 0 8px rgba(255, 0, 127, 0.7);
}

.hud-player.active {
    border-color: rgba(255, 255, 255, 0.15);
    background: rgba(255, 255, 255, 0.03);
}

.p1-hud-card.active {
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.1);
    border-color: rgba(0, 240, 255, 0.3);
}

.p2-hud-card.active {
    box-shadow: 0 0 15px rgba(255, 0, 127, 0.1);
    border-color: rgba(255, 0, 127, 0.3);
}

/* Zone Centrale HUD */
.hud-center-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.hud-turn-indicator {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.95rem;
    letter-spacing: 2px;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 6px 20px;
    border-radius: 4px;
    text-align: center;
    width: 100%;
    margin-bottom: 8px;
    position: relative;
    overflow: hidden;
}

.green-glow-text {
    color: var(--neon-green);
    text-shadow: 0 0 5px rgba(57, 255, 20, 0.5);
}

.hud-controls {
    display: flex;
    gap: 10px;
}

.hud-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #718096;
    padding: 6px 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

.hud-btn:hover {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.08);
}

.hud-btn.danger-glow:hover {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
    box-shadow: 0 0 10px rgba(255, 0, 127, 0.2);
}

/* ==========================================================================
   GAMEPLAY SCREEN & VIEWPORT
   ========================================================================== */

.game-main-area {
    width: 100%;
    max-width: 1200px;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

@media (max-width: 950px) {
    .game-main-area {
        grid-template-columns: 1fr;
    }
}

/* Hub Viewport de Zoom */
.board-viewport {
    width: 630px;
    height: 630px;
    background: rgba(0, 0, 0, 0.5);
    border: 2px solid var(--border-color);
    box-shadow: 0 0 25px rgba(0, 240, 255, 0.15), inset 0 0 30px rgba(0, 240, 255, 0.05);
    border-radius: 12px;
    overflow: hidden; /* Important pour masquer les débordements lors du zoom */
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    justify-self: center;
}

@media (max-width: 660px) {
    .board-viewport {
        width: 92vw;
        height: 92vw;
    }
}

/* ==========================================================================
   4D ULTIMATE BOARD CONTAINER & ZOOM TRANSFORM
   ========================================================================== */

.board-container {
    width: 580px;
    height: 580px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 12px;
    padding: 12px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    
    /* Variables de zoom dynamiques injectées par JS */
    transform: translate(var(--zoom-x, 0%), var(--zoom-y, 0%)) scale(var(--zoom-scale, 1));
    transform-origin: center center;
    transition: transform 1.8s cubic-bezier(0.25, 1, 0.25, 1);
}

@media (max-width: 660px) {
    .board-container {
        width: 86vw;
        height: 86vw;
        gap: 2vw;
        padding: 2vw;
    }
}

/* ==========================================================================
   LARGE CELL SECTORS (3x3 GRIDS)
   ========================================================================== */

.large-cell {
    background: rgba(5, 5, 12, 0.85);
    border: 1px solid rgba(0, 240, 255, 0.15);
    border-radius: 6px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 4px;
    padding: 4px;
    position: relative;
    box-shadow: inset 0 0 10px rgba(0, 240, 255, 0.03);
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Highlight du secteur actif disponible pour jouer */
.large-cell.active-sector {
    border-color: var(--neon-green);
    box-shadow: 0 0 15px rgba(57, 255, 20, 0.25), inset 0 0 12px rgba(57, 255, 20, 0.08);
    background: rgba(57, 255, 20, 0.01);
}

.large-cell.active-sector::after {
    content: '';
    position: absolute;
    top: -2px; left: -2px; right: -2px; bottom: -2px;
    border: 1px dashed var(--neon-green);
    border-radius: 7px;
    pointer-events: none;
    animation: border-pulse 2s infinite linear;
}

@keyframes border-pulse {
    0% { opacity: 0.3; }
    50% { opacity: 0.8; }
    100% { opacity: 0.3; }
}

/* Comportement des cellules adjacentes lors du ZOOM */
.board-container.zoomed .large-cell:not(.active-sector) {
    opacity: 0.15;
    filter: blur(2px);
}

/* override si l'autre joueur a un "Coup Libre" (Free Play) : toutes les cellules actives s'illuminent en vert */
.board-container.free-play-active .large-cell:not(.locked) {
    border-color: var(--neon-green);
    box-shadow: 0 0 8px rgba(57, 255, 20, 0.15);
    opacity: 1 !important;
    filter: none !important;
}

/* ==========================================================================
   SMALL CELLS (THE 81 TIC-TAC-TOE SQUARES)
   ========================================================================== */

.small-cell {
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    font-weight: 900;
    transition: all 0.2s;
    position: relative;
}

/* Hover dans un secteur jouable */
.large-cell.active-sector .small-cell:not(.taken):hover,
.board-container.free-play-active .large-cell:not(.locked) .small-cell:not(.taken):hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(0, 240, 255, 0.3);
    box-shadow: inset 0 0 5px rgba(0, 240, 255, 0.1);
}

/* Marqueurs X et O posés */
.small-cell.taken-x {
    color: var(--neon-cyan);
    text-shadow: 0 0 8px rgba(0, 240, 255, 0.8);
    animation: marker-pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.small-cell.taken-o {
    color: var(--neon-magenta);
    text-shadow: 0 0 8px rgba(255, 0, 127, 0.8);
    animation: marker-pop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes marker-pop {
    0% { transform: scale(0.3); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* ==========================================================================
   SECTORS WIN CAPTURE (OVERLAYS)
   ========================================================================== */

.large-cell.locked {
    /* Désactiver les clics */
    pointer-events: none;
}

/* Overlay géant brillant dessiné sur le grand secteur gagné */
.sector-win-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Orbitron', sans-serif;
    font-size: 6.5rem;
    font-weight: 900;
    z-index: 15;
    animation: overlay-fade 0.5s cubic-bezier(0.25, 1, 0.5, 1) forwards;
    background: rgba(2, 2, 6, 0.85);
}

@keyframes overlay-fade {
    0% { opacity: 0; transform: scale(0.6); }
    100% { opacity: 1; transform: scale(1); }
}

.sector-win-overlay.win-x {
    color: var(--neon-cyan);
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.8), 0 0 40px rgba(0, 240, 255, 0.4);
    border: 2px solid var(--neon-cyan);
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.3), inset 0 0 20px rgba(0, 240, 255, 0.1);
}

.sector-win-overlay.win-o {
    color: var(--neon-magenta);
    text-shadow: 0 0 20px rgba(255, 0, 127, 0.8), 0 0 40px rgba(255, 0, 127, 0.4);
    border: 2px solid var(--neon-magenta);
    box-shadow: 0 0 20px rgba(255, 0, 127, 0.3), inset 0 0 20px rgba(255, 0, 127, 0.1);
}

.sector-win-overlay.win-draw {
    color: var(--neon-gold);
    font-size: 3rem;
    text-shadow: 0 0 10px rgba(255, 183, 0, 0.8);
    border: 2px solid var(--neon-gold);
    box-shadow: 0 0 15px rgba(255, 183, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ==========================================================================
   TACTICAL SIDEBAR & TERMINAL LOGS
   ========================================================================== */

.tactical-sidebar {
    height: 630px;
    display: flex;
    flex-direction: column;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
}

@media (max-width: 950px) {
    .tactical-sidebar {
        height: 250px;
        width: 100%;
    }
}

.sidebar-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 10px;
}

.pulse-indicator {
    width: 8px;
    height: 8px;
    background-color: var(--neon-green);
    border-radius: 50%;
    margin-right: 10px;
    box-shadow: 0 0 8px var(--neon-green);
    animation: indicator-pulse 1.5s infinite ease-in-out;
}

@keyframes indicator-pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.sidebar-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    color: #e2e8f0;
}

.console-log-box {
    flex-grow: 1;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 4px;
    padding: 12px;
    overflow-y: auto;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.8rem;
    line-height: 1.5;
    color: #718096;
    display: flex;
    flex-direction: column;
    gap: 8px;
    scroll-behavior: smooth;
}

/* Custom scrollbar console */
.console-log-box::-webkit-scrollbar {
    width: 4px;
}
.console-log-box::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
}
.console-log-box::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.log-line {
    border-left: 2px solid transparent;
    padding-left: 6px;
    animation: log-slide 0.2s ease-out;
    word-break: normal;
    overflow-wrap: break-word;
    white-space: pre-wrap;
    line-height: 1.4;
}

@keyframes log-slide {
    from { opacity: 0; transform: translateX(-5px); }
    to { opacity: 1; transform: translateX(0); }
}

.log-line.system {
    border-color: var(--neon-green);
    color: #a0aec0;
}

.log-line.p1-move {
    border-color: var(--neon-cyan);
    color: #fff;
}

.log-line.p2-move {
    border-color: var(--neon-magenta);
    color: #fff;
}

.log-line.win {
    border-color: var(--neon-gold);
    color: var(--neon-gold);
    font-weight: bold;
}

.audio-controls {
    margin-top: 15px;
}

.audio-controls .hud-btn {
    width: 100%;
    padding: 10px;
    letter-spacing: 1px;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* ==========================================================================
   GAME OVER SCREEN & SUMMARY
   ========================================================================== */

.gameover-container {
    width: 100%;
    max-width: 580px;
    text-align: center;
    border-color: var(--neon-magenta);
    box-shadow: 0 0 30px rgba(255, 0, 127, 0.15), inset 0 0 15px rgba(255, 0, 127, 0.05);
}

.winner-display-card {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 25px 0;
}

.winner-glow-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.decor-bracket {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.2);
    margin: 0 15px;
}

.gameover-stats {
    margin-bottom: 25px;
}

.gameover-actions {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    gap: 15px;
}

#btn-home {
    background: rgba(0, 240, 255, 0.03);
    border-color: rgba(0, 240, 255, 0.3);
    color: rgba(0, 240, 255, 0.85);
    text-shadow: 0 0 5px rgba(0, 240, 255, 0.3);
}

#btn-home:hover {
    border-color: var(--neon-cyan);
    background: rgba(0, 240, 255, 0.08);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.25), inset 0 0 10px rgba(0, 240, 255, 0.1);
    color: #fff;
    text-shadow: 0 0 8px var(--neon-cyan);
}


/* Utility classes */
.hidden {
    display: none !important;
}

.scanline {
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(255,255,255,0),
        rgba(255,255,255,0) 50%,
        rgba(0, 240, 255, 0.08) 50%,
        rgba(0, 240, 255, 0.08)
    );
    background-size: 100% 4px;
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
}

/* Custom Cyber Confirm Modal Overlay */
.screen-overlay {
    position: absolute;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(2, 2, 6, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    transition: all 0.3s ease;
}

.danger-glow-card {
    border-color: var(--neon-magenta) !important;
    box-shadow: 0 0 25px rgba(255, 0, 127, 0.25), inset 0 0 15px rgba(255, 0, 127, 0.05) !important;
    text-align: center;
    max-width: 480px;
    width: 90%;
}

.danger-glow-card::before {
    background: linear-gradient(90deg, transparent, var(--neon-magenta), transparent) !important;
}

.confirm-message {
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.1rem;
    color: #cbd5e0;
    margin: 20px 0 30px 0;
    letter-spacing: 1.5px;
    line-height: 1.5;
    text-shadow: 0 0 5px rgba(255, 255, 255, 0.1);
}

.confirm-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.btn-cyber.danger-glow:hover {
    border-color: var(--neon-magenta);
    color: var(--neon-magenta);
    box-shadow: 0 0 15px rgba(255, 0, 127, 0.25);
    text-shadow: 0 0 5px var(--neon-magenta);
}

.text-center {
    justify-content: center !important;
}