body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
}

#root {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.game-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.game-board {
    width: 100%;
    height: 100%;
}

.square {
    transition: fill 0.2s ease;
}

.square:hover {
    filter: brightness(1.1);
}

.square.valid-move {
    filter: brightness(1.2);
}

.square.valid-move:hover {
    filter: brightness(1.3);
}

@keyframes pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

.valid-move circle {
    animation: pulse 1.5s ease-in-out infinite;
}

.debug-info {
    position: absolute;
    left: 10px;
    color: #4A4A4A;
    font-family: Arial, sans-serif;
    font-size: 14px;
    z-index: 100;
}

#ai-depth-info {
    top: 60px;
}

#ai-move-time {
    top: 85px;
}

.debug-button {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 16px 32px;
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 24px;
    color: #F5E6D3;
    background: linear-gradient(to bottom, #556B2F, #4A5D28);
    border: 2px solid #2F4F4F;
    border-radius: 8px;
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.debug-button:hover {
    background: linear-gradient(to bottom, #657B3F, #5A6D38);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.debug-button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.debug-button.active {
    background: linear-gradient(to bottom, #A83232, #982D2D);
}

.debug-button.active:hover {
    background: linear-gradient(to bottom, #B84242, #A83D3D);
}

.rules-button {
    position: absolute;
    top: 20px;
    left: 20px;
    padding: 16px 32px;
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 24px;
    color: #F5E6D3;
    background: linear-gradient(to bottom, #8B4513, #654321);
    border: 2px solid #4A2511;
    border-radius: 8px;
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.rules-button:hover {
    background: linear-gradient(to bottom, #9B5523, #755331);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.rules-button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.avatar-button {
    position: absolute;
    top: 20px;
    left: 180px;
    padding: 8px;
    width: 80px;
    height: 80px;
    background: linear-gradient(to bottom, #8B4513, #654321);
    border: 2px solid #4A2511;
    border-radius: 8px;
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.avatar-button:hover {
    background: linear-gradient(to bottom, #9B5523, #755331);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.avatar-button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.avatar-button img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.language-button {
    position: absolute;
    bottom: 20px;
    left: 20px;
    padding: 16px 32px;
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 24px;
    color: #F5E6D3;
    background: linear-gradient(to bottom, #2B557A, #182B47);
    border: 2px solid #0F1F35;
    border-radius: 8px;
    cursor: pointer;
    z-index: 100;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.language-button:hover {
    background: linear-gradient(to bottom, #3B658A, #283B57);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.4);
}

.language-button:active {
    transform: translateY(1px);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.rules-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.rules-modal-container {
    background: #F5E6D3;
    border: 3px solid #965f36;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 80%;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.rules-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 2px solid #965f36;
    background: linear-gradient(to bottom, #F5E6D3, #E6D7C3);
}

.rules-modal-title {
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 32px;
    color: #965f36;
    margin: 0;
    letter-spacing: 2px;
}

.rules-modal-close {
    background: #A83232;
    border: 2px solid #8B2828;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 32px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    padding: 0;
    font-weight: bold;
}

.rules-modal-close:hover {
    background: #B84242;
    transform: scale(1.1);
}

.rules-modal-content {
    padding: 20px 30px;
    overflow-y: auto;
    flex: 1;
    font-family: 'Georgia', serif;
    color: #4A4A4A;
    line-height: 1.6;
}

.rules-modal-content::-webkit-scrollbar {
    width: 10px;
}

.rules-modal-content::-webkit-scrollbar-track {
    background: #E6D7C3;
    border-radius: 5px;
}

.rules-modal-content::-webkit-scrollbar-thumb {
    background: #965f36;
    border-radius: 5px;
}

.rules-modal-content::-webkit-scrollbar-thumb:hover {
    background: #7d4f2d;
}

.rules-header {
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 22px;
    color: #8B4513;
    margin: 24px 0 12px 0;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.rules-subheader {
    font-family: 'Georgia', serif;
    font-size: 17px;
    color: #4A4A4A;
    margin: 12px 0;
    font-weight: bold;
    font-style: italic;
}

.rules-text {
    font-family: 'Georgia', serif;
    font-size: 16px;
    color: #4A4A4A;
    margin: 10px 0;
    text-align: justify;
}

.rules-bold {
    font-weight: bold;
    color: #654321;
}

.rules-highlight {
    font-weight: bold;
    color: #A83232;
}

.character-selector-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.character-selector-container {
    background: #F5E6D3;
    border: 3px solid #965f36;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.character-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 2px solid #965f36;
    background: linear-gradient(to bottom, #F5E6D3, #E6D7C3);
}

.character-selector-title {
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 28px;
    color: #965f36;
    margin: 0;
    letter-spacing: 2px;
}

.character-selector-close {
    background: #A83232;
    border: 2px solid #8B2828;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 32px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    padding: 0;
    font-weight: bold;
}

.character-selector-close:hover {
    background: #B84242;
    transform: scale(1.1);
}

.character-selector-content {
    padding: 40px 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
}

.character-selector-arrow {
    background: #8B4513;
    border: 2px solid #654321;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 28px;
    color: #F5E6D3;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.character-selector-arrow:hover {
    background: #9B5523;
    transform: scale(1.1);
}

.character-selector-arrow:active {
    transform: scale(0.95);
}

.character-selector-avatar {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.character-selector-avatar img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    border: 3px solid #965f36;
    border-radius: 12px;
    background: white;
}

.character-selector-name {
    font-family: 'Impact', Arial Black, sans-serif;
    font-size: 32px;
    color: #965f36;
    letter-spacing: 2px;
}