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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    max-height: 100vh;
    margin: 0;
    padding: 0;
    color: #fff;
    overflow: hidden;
}

.container {
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 0;
    padding: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* Menu mode styles */
.container.menu-mode {
    border-radius: 15px;
    padding: 8px;
    max-width: 1200px;
    margin: 5px auto;
    position: relative;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

header {
    text-align: center;
    margin-bottom: 15px;
    flex-shrink: 0;
}

.game-icon {
    font-size: 4rem;
    margin-bottom: 10px;
    animation: bounce 2s ease infinite;
    display: block;
}

#game-title {
    font-size: 2rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.menu-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.15);
    padding: 10px 20px;
    border-radius: 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    min-width: 120px;
}

.stat-label {
    font-size: 0.85rem;
    opacity: 0.9;
    margin-bottom: 5px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    color: #FFD700;
    text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.language-selector {
    margin: 0;
}

.language-selector select {
    padding: 10px 15px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    min-width: 200px;
}

.language-selector select option {
    background: #667eea;
    color: #fff;
}

.game-menu,
.level-selector {
    text-align: center;
    flex-shrink: 0;
    overflow-y: auto;
    max-height: calc(100vh - 150px);
}

.game-menu h2,
.level-selector h2 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.game-menu {
    padding: 5px 0;
}

.menu-btn {
    display: block;
    width: 100%;
    max-width: 300px;
    margin: 10px auto;
    padding: 12px 25px;
    font-size: 1.1rem;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
}

.menu-btn.large {
    max-width: 400px;
    padding: 18px 35px;
    font-size: 1.4rem;
    font-weight: bold;
    background: rgba(255, 255, 255, 0.25);
    border: 3px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.menu-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.menu-btn.large:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.6);
}

.ai-difficulty-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin: 10px auto;
    padding: 12px 20px;
    max-width: 300px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
}

.ai-difficulty-selector label {
    font-size: 1.1rem;
    color: #fff;
    margin: 0;
}

.ai-difficulty-selector select {
    padding: 8px 12px;
    border-radius: 6px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1rem;
    cursor: pointer;
    flex: 1;
    min-width: 120px;
}

.ai-difficulty-selector select option {
    background: #667eea;
    color: #fff;
}

.menu-ad {
    margin: 15px auto;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 468px;
    width: 100%;
}

.menu-ad iframe {
    border: none;
}

.settings-screen {
    text-align: center;
    padding: 20px;
}

.settings-screen h2 {
    font-size: 2rem;
    margin-bottom: 30px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.settings-content {
    display: flex;
    flex-direction: column;
    gap: 25px;
    max-width: 400px;
    margin: 0 auto 30px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.setting-group label {
    font-size: 1.2rem;
    font-weight: bold;
}

.setting-group select {
    padding: 12px 20px;
    border-radius: 8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    min-width: 250px;
}

.control-btn.large-setting-btn {
    padding: 15px 30px;
    font-size: 1.5rem;
    min-width: 80px;
    background: rgba(255, 255, 255, 0.25);
    border: 2px solid rgba(255, 255, 255, 0.4);
}

.control-btn.large-setting-btn:hover {
    background: rgba(255, 255, 255, 0.35);
    transform: translateY(-2px) scale(1.05);
}

.game-container {
    display: flex;
    flex-direction: column;
    gap: 0;
    flex: 1;
    min-height: 0;
    height: 100vh;
    width: 100%;
}

.game-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 6px;
    padding: 5px 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 0;
    flex-shrink: 0;
    width: 100%;
}

.score-board {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.player-score {
    font-size: 1.4rem;
    font-weight: bold;
}

.current-player {
    font-size: 0.95rem;
    padding: 5px 10px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

.game-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}

.level-info {
    font-size: 1.3rem;
    font-weight: bold;
    padding: 8px 15px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
}

.control-btn {
    padding: 6px 12px;
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

.control-btn:active {
    transform: translateY(0);
}

#btn-sound,
#btn-animation {
    min-width: 40px;
    font-size: 1rem;
    padding: 6px 10px;
}

.board-container {
    display: flex;
    justify-content: flex-start;
    align-items: flex-start;
    background: transparent;
    border-radius: 0;
    padding: 0;
    overflow-x: auto;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    width: 100%;
    height: 100%;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.board-container::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

.board-container::-webkit-scrollbar-track {
    background: transparent;
}

.board-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 6px;
}

.board-container::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

#game-board {
    background: transparent;
    border-radius: 0;
    cursor: pointer;
    box-shadow: none;
    display: block;
    width: auto;
    height: auto;
    margin: 0;
    flex-shrink: 0;
    /* No max-width or max-height - maintain fixed size */
    min-width: 0;
    min-height: 0;
}

.game-message {
    text-align: center;
    font-size: 0.9rem;
    font-weight: bold;
    min-height: 20px;
    padding: 2px;
    flex-shrink: 0;
}

.ad-container {
    width: 100%;
    max-width: 100%;
    text-align: center;
    padding: 10px 5px;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.05);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    box-sizing: border-box;
}

.ad-container ins {
    display: inline-block;
    margin: 0 auto;
    max-width: 100%;
}

/* Celebration Modal */
.celebration-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.celebration-modal.show {
    opacity: 1;
}

.celebration-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    transform: scale(0.8);
    transition: transform 0.3s ease;
    animation: celebrate 0.5s ease forwards;
}

.celebration-modal.show .celebration-content {
    transform: scale(1);
}

@keyframes celebrate {
    0% {
        transform: scale(0.5) rotate(-10deg);
        opacity: 0;
    }

    50% {
        transform: scale(1.1) rotate(5deg);
    }

    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

.celebration-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: bounce 0.6s ease infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.celebration-score {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: #fff;
    font-weight: bold;
}

.celebration-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.celebration-btn {
    padding: 15px 30px;
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
}

.celebration-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.celebration-btn:active {
    transform: translateY(0);
}

/* Responsive celebration modal */
@media (max-width: 768px) {
    .celebration-content {
        padding: 30px 20px;
        margin: 20px;
    }

    .celebration-title {
        font-size: 2rem;
    }

    .celebration-score {
        font-size: 1.2rem;
    }

    .celebration-btn {
        padding: 12px 25px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .celebration-content {
        padding: 20px 15px;
        margin: 10px;
    }

    .celebration-title {
        font-size: 1.5rem;
    }

    .celebration-score {
        font-size: 1rem;
    }

    .celebration-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

.level-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
    max-width: 800px;
    margin: 0 auto 30px;
    max-height: calc(100vh - 250px);
    overflow-y: auto;
    padding: 10px;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.level-grid::-webkit-scrollbar {
    width: 8px;
}

.level-grid::-webkit-scrollbar-track {
    background: transparent;
}

.level-grid::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

.level-grid::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.5);
}

.level-btn {
    padding: 20px;
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
}

.level-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.level-btn.completed {
    background: rgba(76, 175, 80, 0.4);
    border-color: rgba(76, 175, 80, 0.6);
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 5px;
    }

    .container {
        padding: 10px;
    }

    #game-title {
        font-size: 1.5rem;
    }

    header {
        margin-bottom: 10px;
    }

    .game-menu h2,
    .level-selector h2 {
        font-size: 1.2rem;
        margin-bottom: 10px;
    }

    .menu-btn {
        padding: 10px 15px;
        font-size: 0.95rem;
        margin: 8px auto;
        max-width: 250px;
    }

    .game-info {
        flex-direction: column;
        align-items: stretch;
        padding: 6px 10px;
    }

    .score-board {
        justify-content: center;
        gap: 10px;
    }

    .player-score {
        font-size: 1rem;
    }

    .game-controls {
        justify-content: center;
        gap: 6px;
    }

    .level-info,
    .current-player {
        font-size: 0.9rem;
        padding: 6px 12px;
    }

    .control-btn {
        padding: 8px 15px;
        font-size: 0.9rem;
    }

    .language-selector select {
        padding: 6px 10px;
        font-size: 0.85rem;
    }

    .level-grid {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
        gap: 8px;
        max-width: 600px;
    }

    .level-btn {
        padding: 12px;
        font-size: 0.95rem;
    }

    .ad-container {
        padding: 8px 5px;
    }

    .ad-container ins {
        width: 100% !important;
        max-width: 728px;
        height: auto !important;
    }
}

@media (max-width: 480px) {
    body {
        padding: 5px;
    }

    .container {
        padding: 8px;
    }

    #game-title {
        font-size: 1.3rem;
    }

    header {
        margin-bottom: 8px;
    }

    .menu-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
        margin: 6px auto;
        max-width: 200px;
    }

    .player-score {
        font-size: 0.9rem;
    }

    .game-info {
        padding: 4px 6px;
        gap: 4px;
    }

    .score-board {
        gap: 6px;
    }

    .game-controls {
        gap: 4px;
        flex-wrap: wrap;
    }

    .level-info,
    .current-player {
        font-size: 0.85rem;
        padding: 5px 10px;
    }

    .control-btn {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .language-selector select {
        padding: 5px 8px;
        font-size: 0.8rem;
    }

    .board-container {
        padding: 3px;
        min-height: 350px;
        flex: 1 1 auto;
    }

    #game-board {
        /* No max-width or max-height - canvas uses fixed size */
        /* No object-fit - canvas maintains its natural size */
    }

    .game-container {
        height: calc(100vh - 20px);
        max-height: calc(100vh - 20px);
    }

    .game-message {
        min-height: 20px;
        padding: 2px;
        font-size: 0.9rem;
    }

    .level-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
        gap: 6px;
        max-width: 400px;
    }

    .level-btn {
        padding: 10px;
        font-size: 0.85rem;
    }

    .ad-container {
        padding: 5px 3px;
    }

    .ad-container ins {
        width: 100% !important;
        max-width: 728px;
        height: auto !important;
    }
}