* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0a0a0a;
    color: #e0e0e0;
    min-height: 100vh;
    overflow: hidden;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

header {
    background: #000;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #222;
    flex-shrink: 0;
    height: 60px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.ascii-title {
    font-family: 'Courier New', monospace;
    font-size: 1.4rem;
    color: #4ade80;
    font-weight: bold;
    letter-spacing: 1px;
    text-shadow: 0 0 10px rgba(74, 222, 128, 0.3);
}

.contract-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #111;
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid #333;
}

.contract-address {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: #888;
    text-decoration: none;
    transition: color 0.2s;
}

.contract-address:hover {
    color: #4ade80;
}

.copy-btn {
    background: transparent;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.copy-btn:hover {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.1);
}

.copy-btn.copied {
    color: #4ade80;
}

.dev-link {
    font-family: 'Courier New', monospace;
    font-size: 0.85rem;
    color: #888;
    text-decoration: none;
    padding: 6px 12px;
    background: #111;
    border-radius: 6px;
    border: 1px solid #333;
    transition: all 0.2s;
}

.dev-link:hover {
    color: #4ade80;
    border-color: #4ade80;
}

.header-stats {
    display: flex;
    gap: 25px;
}

.stat-box {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-box .stat-label {
    font-size: 0.65rem;
    color: #888;
    text-transform: uppercase;
}

.stat-box .stat-value {
    font-size: 1rem;
    font-weight: bold;
    color: #4ade80;
}

.main-area {
    display: flex;
    flex: 1;
    height: calc(100vh - 60px);
    overflow: hidden;
}

.side-panel {
    width: 20%;
    min-width: 200px;
    max-width: 320px;
    background: #111;
    border-right: 1px solid #222;
    padding: 15px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.side-panel.black-panel {
    border-right: none;
    border-left: 1px solid #222;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.color-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    flex-shrink: 0;
}

.white-dot {
    background: #fff;
    box-shadow: 0 0 10px rgba(255,255,255,0.6);
}

.black-dot {
    background: #333;
    border: 2px solid #888;
}

.panel-title {
    font-size: 1.3rem;
    font-weight: bold;
    color: #ccc;
    letter-spacing: 1px;
}

.side-panel .ai-name {
    font-size: 1.05rem;
    color: #4ade80;
    margin-bottom: 12px;
    word-break: break-word;
    line-height: 1.4;
    font-weight: 500;
}

.thinking-badge {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    color: #0a0a0a;
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 12px;
    animation: thinking-glow 1.5s ease-in-out infinite;
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.4);
}

.thinking-badge.active {
    display: flex;
}

@keyframes thinking-glow {
    0%, 100% { 
        box-shadow: 0 0 20px rgba(74, 222, 128, 0.4);
        transform: scale(1);
    }
    50% { 
        box-shadow: 0 0 30px rgba(74, 222, 128, 0.6);
        transform: scale(1.02);
    }
}

.thinking-dot {
    width: 8px;
    height: 8px;
    background: #0a0a0a;
    border-radius: 50%;
    animation: blink 0.6s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

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

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #222;
    font-size: 1.1rem;
}

.stat-row .stat-label {
    color: #888;
}

.stat-row .stat-val {
    color: #e0e0e0;
    font-weight: 600;
}

.stat-row.current .stat-val {
    color: #4ade80;
    font-weight: bold;
}

.section-divider {
    height: 1px;
    background: #333;
    margin: 12px 0;
}

.section-label {
    font-size: 0.95rem;
    color: #666;
    text-transform: uppercase;
    margin-bottom: 8px;
    letter-spacing: 0.5px;
}

.captured-pieces {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    min-height: 28px;
}

.captured-piece {
    font-size: 1.6rem;
}

.no-captures {
    color: #555;
    font-size: 0.8rem;
}

.moves-list {
    max-height: 100px;
    overflow-y: auto;
    font-size: 1rem;
}

.commentary-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-top: 12px;
    min-height: 120px;
}

.commentary-label {
    font-size: 1rem;
    color: #666;
    text-transform: uppercase;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
    letter-spacing: 0.5px;
}

.commentary-label .thinking-icon {
    width: 10px;
    height: 10px;
    background: #4ade80;
    border-radius: 50%;
    animation: blink 0.6s ease-in-out infinite;
    display: none;
    box-shadow: 0 0 8px rgba(74, 222, 128, 0.5);
}

.commentary-label .thinking-icon.active {
    display: block;
}

.commentary-text {
    flex: 1;
    background: linear-gradient(180deg, #0d0d0d 0%, #080808 100%);
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    padding: 10px;
    font-size: 0.85rem;
    color: #ccc;
    line-height: 1.5;
    overflow-y: auto;
}

.commentary-entry {
    margin-bottom: 12px;
    padding: 10px;
    border-radius: 6px;
    background: #151515;
    border-left: 3px solid #333;
    animation: fadeIn 0.3s ease-out;
}

.commentary-entry:first-child {
    background: linear-gradient(135deg, #1a2e1a 0%, #152015 100%);
    border-left: 3px solid #4ade80;
    box-shadow: 0 2px 10px rgba(74, 222, 128, 0.1);
}

.commentary-entry:first-child .commentary-move {
    font-size: 1.15rem;
}

.commentary-entry:first-child .commentary-content {
    font-size: 1rem;
    color: #ddd;
    font-style: normal;
}

.commentary-move {
    color: #4ade80;
    font-weight: bold;
    font-size: 1rem;
    margin-bottom: 6px;
}

.commentary-content {
    color: #aaa;
    font-style: normal;
    font-size: 0.9rem;
    line-height: 1.6;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.move-item {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    border-bottom: 1px solid #1a1a1a;
    font-size: 1rem;
}

.move-item.latest-move {
    background: rgba(74, 222, 128, 0.15);
    padding: 6px 8px;
    border-radius: 4px;
    margin: 2px 0;
}

.move-number {
    color: #666;
}

.move-notation {
    color: #4ade80;
    font-weight: 600;
}

.move-time {
    color: #888;
}

.center-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 10px;
    gap: 10px;
    overflow: hidden;
}

.center-area .board-container {
    align-self: center;
}

.center-area .mobile-toggle {
    align-self: center;
    max-width: 300px;
}

.board-container {
    flex: 1;
    width: 100%;
    max-width: 900px;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

#chess-board-3d {
    width: 100%;
    height: 100%;
    max-width: 900px;
    max-height: 700px;
    border-radius: 12px;
    overflow: hidden;
    background: #050505;
}

#chess-board-3d canvas {
    border-radius: 12px;
}

.chess3d-notification {
    position: absolute;
    top: 15%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 4px;
    text-shadow: 0 0 20px currentColor, 0 0 40px currentColor, 0 4px 8px rgba(0,0,0,0.8);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
    z-index: 100;
    text-align: center;
    white-space: nowrap;
}

.chess3d-notification.show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.chess3d-notification.notif-capture {
    color: #ff6b6b;
}

.chess3d-notification.notif-check {
    color: #ffd93d;
}

.chess3d-notification.notif-checkmate {
    color: #ff4757;
    font-size: 4rem;
    animation: pulse-glow 0.5s ease-in-out infinite alternate;
}

.chess3d-notification.notif-draw {
    color: #a8a8a8;
}

.chess3d-notification.notif-default {
    color: #4ade80;
}

@keyframes pulse-glow {
    from {
        text-shadow: 0 0 20px currentColor, 0 0 40px currentColor, 0 4px 8px rgba(0,0,0,0.8);
    }
    to {
        text-shadow: 0 0 30px currentColor, 0 0 60px currentColor, 0 0 80px currentColor, 0 4px 8px rgba(0,0,0,0.8);
    }
}

.game-alert {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    font-size: 72px;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 8px;
    padding: 20px 50px;
    border-radius: 12px;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
    transition: none;
}

.game-alert.check {
    color: #fbbf24;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.2) 0%, rgba(245, 158, 11, 0.3) 100%);
    border: 3px solid #fbbf24;
    box-shadow: 0 0 60px rgba(251, 191, 36, 0.6), inset 0 0 30px rgba(251, 191, 36, 0.1);
}

.game-alert.checkmate {
    color: #ef4444;
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2) 0%, rgba(220, 38, 38, 0.3) 100%);
    border: 3px solid #ef4444;
    box-shadow: 0 0 80px rgba(239, 68, 68, 0.7), inset 0 0 40px rgba(239, 68, 68, 0.1);
}

.game-alert.countdown {
    color: #4ade80;
    background: linear-gradient(135deg, rgba(74, 222, 128, 0.15) 0%, rgba(34, 197, 94, 0.25) 100%);
    border: 3px solid #4ade80;
    box-shadow: 0 0 60px rgba(74, 222, 128, 0.5), inset 0 0 30px rgba(74, 222, 128, 0.1);
    font-size: 48px;
    letter-spacing: 4px;
}

.game-alert.countdown .countdown-number {
    display: block;
    font-size: 120px;
    font-weight: 900;
    line-height: 1;
    margin-top: 10px;
    text-align: center;
    text-shadow: 0 0 40px rgba(74, 222, 128, 0.8);
}

.game-alert.countdown-show {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.game-alert.countdown-pulse {
    animation: countdownPulse 0.3s ease-out;
}

@keyframes countdownPulse {
    0% { transform: translate(-50%, -50%) scale(1.1); }
    100% { transform: translate(-50%, -50%) scale(1); }
}

.game-alert.show {
    animation: alertPop 2s ease-out forwards;
}

@keyframes alertPop {
    0% { 
        opacity: 0; 
        transform: translate(-50%, -50%) scale(0.3);
    }
    15% { 
        opacity: 1; 
        transform: translate(-50%, -50%) scale(1.1);
    }
    25% { 
        transform: translate(-50%, -50%) scale(1);
    }
    75% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    100% { 
        opacity: 0; 
        transform: translate(-50%, -50%) scale(0.8);
    }
}

#chess-board {
    display: grid;
    grid-template-columns: repeat(8, 75px);
    grid-template-rows: repeat(8, 75px);
    width: 600px;
    height: 600px;
    border: 3px solid #333;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    flex-shrink: 0;
    position: absolute;
    opacity: 0.001;
    pointer-events: none;
}

.square {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 75px;
    height: 75px;
    font-size: 58px;
    cursor: default;
    position: relative;
    transition: background-color 0.2s;
}

.square.light {
    background: #e8d5b0;
}

.square.dark {
    background: #b58863;
}

.square.last-move {
    background: rgba(255, 255, 0, 0.4) !important;
}

.square.move-from {
    background: rgba(74, 222, 128, 0.5) !important;
    box-shadow: inset 0 0 20px rgba(74, 222, 128, 0.8);
}

.square.move-to {
    background: rgba(74, 222, 128, 0.3) !important;
    box-shadow: inset 0 0 25px rgba(74, 222, 128, 0.6);
    animation: target-pulse 0.8s ease-in-out;
}

@keyframes target-pulse {
    0%, 100% { box-shadow: inset 0 0 25px rgba(74, 222, 128, 0.6); }
    50% { box-shadow: inset 0 0 40px rgba(74, 222, 128, 1); }
}

.piece-white, .piece-black {
    transition: transform 0.8s ease-in-out;
}

.piece-white {
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    filter: drop-shadow(1px 1px 1px rgba(0,0,0,0.3));
}

.piece-black {
    color: #1a1a1a;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.2);
}

.captured-animation {
    animation: capture-effect 0.5s ease-out forwards;
}

@keyframes capture-effect {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; filter: brightness(2); }
    100% { transform: scale(0); opacity: 0; }
}

.ai-log-section {
    display: flex;
    flex-direction: column;
    background: #0d0d0d;
    border: 1px solid #222;
    border-radius: 6px;
    overflow: hidden;
    height: 150px;
    min-height: 100px;
    max-height: 180px;
    flex-shrink: 0;
    width: 100%;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: #151515;
    border-bottom: 1px solid #222;
}

.log-title {
    font-size: 0.8rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ai-log {
    flex: 1;
    padding: 10px;
    overflow-y: auto;
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 0.8rem;
    line-height: 1.5;
}

.log-entry {
    padding: 4px 0;
    border-bottom: 1px solid #1a1a1a;
}

.log-entry.request {
    color: #60a5fa;
}

.log-entry.response {
    color: #4ade80;
}

.log-entry.error {
    color: #f87171;
}

.log-entry.info {
    color: #fbbf24;
}

.log-entry.move {
    color: #a78bfa;
    font-weight: bold;
}

@media (max-height: 950px) {
    .ai-log-section {
        height: 130px;
        min-height: 80px;
        max-height: 150px;
    }
}

@media (max-height: 900px) {
    #chess-board {
        grid-template-columns: repeat(8, 65px);
        grid-template-rows: repeat(8, 65px);
        width: 520px;
        height: 520px;
    }
    #chess-board-3d {
        width: 700px;
        height: 550px;
    }
    .square {
        width: 65px;
        height: 65px;
        font-size: 50px;
    }
    .ai-log-section {
        height: 120px;
        min-height: 80px;
        max-height: 140px;
    }
}

@media (max-height: 750px) {
    #chess-board {
        grid-template-columns: repeat(8, 55px);
        grid-template-rows: repeat(8, 55px);
        width: 440px;
        height: 440px;
    }
    #chess-board-3d {
        width: 600px;
        height: 450px;
    }
    .square {
        width: 55px;
        height: 55px;
        font-size: 44px;
    }
    .ai-log-section {
        height: 100px;
        min-height: 60px;
        max-height: 120px;
    }
}

::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #111;
}

::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: #444;
}

.mobile-toggle {
    display: none;
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    color: #000;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-size: 0.9rem;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    margin-bottom: 10px;
    transition: all 0.3s;
}

.mobile-toggle svg {
    transition: transform 0.3s;
}

.mobile-toggle.active {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.mobile-toggle.active svg {
    transform: rotate(180deg);
}

@media (max-width: 1024px) {
    body {
        overflow-y: auto;
    }
    
    header {
        flex-direction: column;
        height: auto;
        padding: 10px;
        gap: 8px;
    }
    
    .header-left {
        flex-direction: column;
        gap: 8px;
        width: 100%;
        align-items: center;
    }
    
    .ascii-title {
        font-size: 1.1rem;
    }
    
    .contract-box {
        width: 100%;
        justify-content: center;
    }
    
    .contract-address {
        font-size: 0.65rem;
        word-break: break-all;
        white-space: normal;
        text-align: center;
    }
    
    .dev-link {
        font-size: 0.75rem;
        padding: 4px 10px;
    }
    
    .header-stats {
        width: 100%;
        justify-content: space-around;
        gap: 10px;
    }
    
    .main-area {
        flex-direction: column;
        height: auto;
        overflow: visible;
    }
    
    .side-panel {
        display: flex;
        width: 100%;
        max-width: 100%;
        min-width: 100%;
        border: none;
        border-top: 1px solid #222;
        padding: 15px;
        order: 10;
    }
    
    .side-panel.white-panel {
        order: 11;
    }
    
    .side-panel.black-panel {
        border-left: none;
        order: 12;
    }
    
    .mobile-toggle {
        display: none !important;
    }
    
    .center-area {
        width: 100%;
        padding: 10px;
        flex: none;
        overflow: visible;
        display: flex;
        flex-direction: column;
        order: 1;
    }
    
    .board-container {
        width: 100%;
        display: flex;
        justify-content: center;
        order: 2;
    }
    
    #chess-board {
        width: calc(100vw - 20px);
        height: calc(100vw - 20px);
        max-width: 380px;
        max-height: 380px;
        grid-template-columns: repeat(8, 1fr);
        grid-template-rows: repeat(8, 1fr);
    }
    
    .square {
        width: 100%;
        height: 100%;
        font-size: calc((100vw - 40px) / 10);
    }
    
    #chess-board-3d {
        width: calc(100vw - 20px);
        height: calc(80vw);
        max-width: 100%;
        max-height: 350px;
    }
    
    .ai-log-section {
        display: flex;
        height: 250px;
        max-height: 250px;
        min-height: 200px;
        margin-top: 10px;
        order: 13;
    }
    
    .game-alert {
        font-size: 32px !important;
        padding: 12px 25px !important;
        letter-spacing: 3px !important;
    }
    
    .game-alert.countdown .countdown-number {
        font-size: 50px !important;
    }
    
    .commentary-section {
        min-height: 80px;
    }
    
    .moves-list {
        max-height: 60px;
    }
}

@media (max-width: 480px) {
    .ascii-title {
        font-size: 0.95rem;
    }
    
    .contract-address {
        font-size: 0.6rem;
    }
    
    .stat-box .stat-label {
        font-size: 0.55rem;
    }
    
    .stat-box .stat-value {
        font-size: 0.8rem;
    }
    
    #chess-board {
        max-width: 320px;
        max-height: 320px;
    }
    
    #chess-board-3d {
        height: calc(85vw);
        max-height: 300px;
    }
    
    .square {
        font-size: calc((100vw - 60px) / 10);
    }
    
    .side-panel {
        padding: 10px;
    }
    
    .stat-row {
        padding: 6px 0;
        font-size: 0.95rem;
    }
    
    .section-label {
        font-size: 0.8rem;
    }
}