* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

body {
    font-family: 'Microsoft YaHei', 'SimHei', Arial, sans-serif;
    background: linear-gradient(135deg, #DC143C 0%, #8B0000 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    position: relative;
    overflow-x: hidden;
    touch-action: manipulation;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 215, 0, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 215, 0, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.game-container {
    background: linear-gradient(180deg, #FFF8DC 0%, #FFFACD 100%);
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(139, 0, 0, 0.4);
    padding: 30px;
    max-width: 900px;
    width: 100%;
    border: 3px solid #FFD700;
    position: relative;
    z-index: 1;
}

.game-container::before {
    content: '🎊';
    position: absolute;
    top: -20px;
    right: -20px;
    font-size: 4rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(5deg); }
}

.game-header {
    text-align: center;
    margin-bottom: 20px;
}

.game-title {
    color: #DC143C;
    font-size: 2rem;
    margin-bottom: 15px;
   
}

.game-info {
    display: flex;
    justify-content: center;
    gap: 20px;
    font-size: 1.1rem;
    color: #DC143C;
    font-weight: bold;
    flex-wrap: wrap;
}

.time-info {
    color: #DC143C;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid #FFD700;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.time-info:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.05);
}

.level-info {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid #FFD700;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.level-info:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.05);
}

.hint-info {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.5);
    border: 2px solid #FFD700;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.hint-info:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.05);
}

.admin-link {
    color: #FFD700;
    text-decoration: none;
    padding: 8px 20px;
    background: rgba(220, 20, 60, 0.3);
    border: 2px solid #FFD700;
    border-radius: 15px;
    transition: all 0.3s ease;
    font-weight: bold;
}

.admin-link:hover {
    background: rgba(220, 20, 60, 0.5);
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
}

.game-area {
    margin-bottom: 20px;
}

.instruction {
    text-align: center;
    font-size: 1.2rem;
    color: #ff6b6b;
    margin-bottom: 15px;
    font-weight: bold;
    background: #fff;
    padding: 10px;
    border-radius: 10px;
    border: 2px solid #ff6b6b;
}

.grid-container {
    display: grid;
    gap: 8px;
    justify-content: center;
    margin: 0 auto;
    max-width: 100%;
}

.grid-item {
    width: 80px;
    height: 80px;
    background: linear-gradient(180deg, #FFF8DC 0%, #FFFACD 100%);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 3px solid #FFD700;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);
    user-select: none;
    overflow: hidden;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.grid-item:active {
    transform: scale(0.95);
}

.grid-item-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

.grid-item:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.5);
    border-color: #DC143C;
}

.grid-item.selected {
    border-color: #2ecc71;
    background: #e8f5e9;
    animation: pulse 0.5s ease;
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.4);
}

.grid-item.wrong {
    border-color: #e74c3c;
    background: #fadbd8;
    animation: shake 0.5s ease;
}

.grid-item.hint {
    border-color: #f39c12;
    box-shadow: 0 0 20px rgba(243, 156, 18, 0.6);
    animation: glow 1s ease-in-out infinite;
}

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

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

@keyframes glow {
    0%, 100% { box-shadow: 0 0 5px #feca57, 0 0 10px #feca57; }
    50% { box-shadow: 0 0 20px #feca57, 0 0 30px #feca57; }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes shuffle {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(-10px, -10px) rotate(90deg); }
    50% { transform: translate(10px, -10px) rotate(180deg); }
    75% { transform: translate(-10px, 10px) rotate(270deg); }
}

.grid-item.rotating {
    animation: rotate 5s linear infinite;
}

.grid-item.shuffling {
    animation: shuffle 1s ease;
}

.game-controls {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.btn {
    padding: 12px 30px;
    font-size: 1rem;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    min-width: 100px;
}

.btn:active {
    transform: translateY(0) scale(0.95);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

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

.btn-restart {
    background: linear-gradient(135deg, #DC143C 0%, #B22222 100%);
    color: #FFD700;
    border: 2px solid #FFD700;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.btn-restart:hover {
    box-shadow: 0 6px 20px rgba(220, 20, 60, 0.5);
}

.btn-hint {
    background: linear-gradient(135deg, #8B0000 0%, #DC143C 100%);
    color: #FFD700;
    border: 2px solid #FFD700;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.btn-hint:hover {
    box-shadow: 0 6px 20px rgba(139, 0, 0, 0.5);
}

.btn-modal {
    background: linear-gradient(135deg, #DC143C 0%, #B22222 100%);
    color: #FFD700;
    border: 2px solid #FFD700;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
    margin-top: 20px;
}

.btn-modal:hover {
    box-shadow: 0 6px 20px rgba(220, 20, 60, 0.5);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: linear-gradient(180deg, #FFF8DC 0%, #FFFACD 100%);
    padding: 40px;
    border-radius: 20px;
    text-align: center;
    max-width: 400px;
    width: 90%;
    border: 3px solid #FFD700;
    box-shadow: 0 10px 40px rgba(220, 20, 60, 0.5);
    animation: modalPop 0.3s ease;
}

@keyframes modalPop {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.modal-icon {
    font-size: 4rem;
    margin-bottom: 20px;
}

.modal-message {
    font-size: 1.3rem;
    color: #DC143C;
    margin-bottom: 10px;
    line-height: 1.6;
    font-weight: bold;
}

@media (max-width: 1024px) {
    .game-container {
        padding: 25px;
        max-width: 95%;
    }

    .game-title {
        font-size: 1.8rem;
    }

    .grid-item {
        width: 70px;
        height: 70px;
        font-size: 2.5rem;
        border-radius: 50%;
    }

    .grid-item-image {
        width: 100%;
        height: 100%;
    }

    .game-info {
        gap: 15px;
        font-size: 1rem;
    }

    .time-info, .level-info, .hint-info {
        padding: 6px 15px;
    }

    .instruction {
        font-size: 1.1rem;
        padding: 8px;
    }

    .btn {
        padding: 11px 25px;
        font-size: 0.95rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .game-container {
        padding: 15px;
        border-radius: 15px;
    }

    .game-title {
        font-size: 1.4rem;
        margin-bottom: 12px;
    }

    .grid-item {
        width: 55px;
        height: 55px;
        font-size: 2rem;
        border-width: 2px;
        border-radius: 50%;
    }

    .grid-item-image {
        width: 100%;
        height: 100%;
    }

    .grid-container {
        gap: 6px;
    }

    .game-info {
        flex-direction: row;
        gap: 8px;
        font-size: 0.85rem;
        flex-wrap: wrap;
    }

    .time-info, .level-info, .hint-info {
        padding: 4px 10px;
        border-width: 1px;
        border-radius: 10px;
    }

    .instruction {
        font-size: 1rem;
        padding: 8px;
        border-width: 1px;
        border-radius: 8px;
    }

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

    .modal-content {
        padding: 30px;
        max-width: 85%;
    }

    .modal-icon {
        font-size: 3rem;
    }

    .modal-message {
        font-size: 1.1rem;
    }
}

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

    .game-container {
        padding: 12px;
        border-radius: 12px;
        border-width: 2px;
    }

    .game-title {
        font-size: 1.1rem;
        margin-bottom: 10px;
    }

    .grid-item {
        width: 42px;
        height: 42px;
        font-size: 1.6rem;
        border-width: 2px;
        border-radius: 50%;
    }

    .grid-item-image {
        width: 100%;
        height: 100%;
    }

    .grid-container {
        gap: 4px;
    }

    .game-info {
        flex-direction: column;
        gap: 6px;
        font-size: 0.8rem;
    }

    .time-info, .level-info, .hint-info {
        padding: 4px 12px;
        border-width: 1px;
        border-radius: 8px;
        font-size: 0.8rem;
    }

    .instruction {
        font-size: 0.85rem;
        padding: 6px;
        border-width: 1px;
        border-radius: 6px;
    }

    .btn {
        padding: 8px 16px;
        font-size: 0.85rem;
        border-radius: 18px;
    }

    .game-controls {
        gap: 12px;
    }

    .modal-content {
        padding: 20px;
        max-width: 90%;
        border-radius: 15px;
    }

    .modal-icon {
        font-size: 2.5rem;
        margin-bottom: 15px;
    }

    .modal-message {
        font-size: 1rem;
        margin-bottom: 8px;
    }

    .btn-modal {
        padding: 10px 25px;
        font-size: 0.9rem;
        margin-top: 15px;
    }
}

@media (max-width: 360px) {
    .game-container {
        padding: 10px;
    }

    .game-title {
        font-size: 0.95rem;
    }

    .grid-item {
        width: 36px;
        height: 36px;
        font-size: 1.4rem;
        border-radius: 50%;
    }

    .grid-item-image {
        width: 100%;
        height: 100%;
    }

    .grid-container {
        gap: 3px;
    }

    .game-info {
        gap: 5px;
        font-size: 0.75rem;
    }

    .time-info, .level-info, .hint-info {
        padding: 3px 10px;
        font-size: 0.75rem;
    }

    .instruction {
        font-size: 0.75rem;
        padding: 5px;
    }

    .btn {
        padding: 7px 14px;
        font-size: 0.8rem;
    }

    .modal-content {
        padding: 15px;
    }

    .modal-icon {
        font-size: 2rem;
    }

    .modal-message {
        font-size: 0.9rem;
    }
}

@media (orientation: landscape) and (max-height: 600px) {
    body {
        padding: 5px;
    }

    .game-container {
        padding: 10px;
    }

    .game-title {
        font-size: 1rem;
        margin-bottom: 8px;
    }

    .game-header {
        margin-bottom: 10px;
    }

    .game-info {
        gap: 8px;
        font-size: 0.8rem;
    }

    .time-info, .level-info, .hint-info {
        padding: 3px 8px;
    }

    .instruction {
        font-size: 0.8rem;
        padding: 5px;
        margin-bottom: 8px;
    }

    .grid-item {
        width: 45px;
        height: 45px;
        font-size: 1.8rem;
        border-radius: 50%;
    }

    .grid-container {
        gap: 4px;
    }

    .game-controls {
        margin-top: 10px;
        gap: 10px;
    }

    .btn {
        padding: 6px 15px;
        font-size: 0.8rem;
    }

    .modal-content {
        padding: 15px;
        max-width: 80%;
    }

    .modal-icon {
        font-size: 2rem;
        margin-bottom: 10px;
    }

    .modal-message {
        font-size: 0.9rem;
    }
}

/* 手机端竖屏布局 - 4行4列 */
@media (orientation: portrait) and (max-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(4, 1fr);
        grid-template-rows: repeat(4, 1fr);
    }
    
    .grid-item {
        width: 70px;
        height: 70px;
        font-size: 2.5rem;
    }
}