body.dots-theme {
    font-family: 'Quicksand', sans-serif;
    background-color: #ecf0f1;
    padding: 20px;
    background-image: radial-gradient(rgba(52, 152, 219, 0.15) 20%, transparent 20%),
                      radial-gradient(rgba(52, 152, 219, 0.15) 20%, transparent 20%);
    background-size: 30px 30px;
    background-position: 0 0, 15px 15px;
}

.dots-theme {
    --primary-color: #3498db;
    --secondary-color: #2980b9;
    --accent-color: #2c3e50;
    --background-color: #ecf0f1;
    --text-color: #2c3e50;
    --button-color: #3498db;
    --button-hover-color: #2980b9;
    --border-color: #bdc3c7;
    --shadow-color: rgba(52, 152, 219, 0.3);
}

.dots-theme .menu-btn,
.dots-theme .selection-btn {
    font-family: 'Quicksand', sans-serif;
}

.dots-theme .selection-btn .selection-header,
.dots-theme .selection-btn .selection-desc {
    font-family: 'Quicksand', sans-serif;
}

.dots-theme .menu-btn {
    background-color: var(--button-color);
    border: 2px solid var(--accent-color);
    color: white;
    box-shadow: 0 4px 8px var(--shadow-color);
    text-shadow: none;
    font-weight: 500;
    transition: all 0.2s;
}

.dots-theme .menu-btn:hover {
    background-color: var(--button-hover-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.dots-theme .menu-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #2980b9;
}

.dots-theme .container {
    width: 100%;
    max-width: 500px;
    text-align: center;
    padding: 20px;
    background-color: white;
    border: 4px solid var(--border-color);
    box-shadow: inset 0 0 0 2px var(--secondary-color);
    border-radius: 15px;
    margin: 20px 0;
}

.dots-theme .stat {
    background-color: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 15px;
    margin: 10px 0;
    text-align: center;
    font-size: 1.2rem;
    color: #2c3e50;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.dots-theme .question {
    background-color: var(--background-color);
    border: 3px solid var(--border-color);
    color: var(--text-color);
    box-shadow: 0 4px 8px var(--shadow-color);
    font-size: 2rem;
    padding: 20px;
    margin: 15px 0;
    border-radius: 8px;
    font-weight: bold;
    transition: all 0.2s;
}

.dots-theme .question:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.dots-theme .difficulty-level {
    font-size: 1.2rem;
    margin: 10px 0;
    padding: 10px;
    border-radius: 8px;
    text-align: center;
    font-weight: bold;
}

.dots-theme .difficulty-level.easy {
    background-color: #2ecc71;
    color: white;
}

.dots-theme .difficulty-level.medium {
    background-color: #f1c40f;
    color: white;
}

.dots-theme .difficulty-level.hard {
    background-color: #e74c3c;
    color: white;
}

.dots-theme .difficulty-level.expert {
    background-color: #9b59b6;
    color: white;
}

.dots-theme .menu-btn[onclick="showSettings()"] {
    background-color: rgb(127, 140, 141);
}

.dots-theme .hearts {
    display: flex;
    gap: 5px;
    margin: 10px 0;
}

.dots-theme .heart {
    color: #e74c3c;
    font-size: 1.5rem;
}

.dots-theme .dots-visualization {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 20px 0;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.dots-theme .dots-grid {
    display: grid;
    gap: 10px;
    margin: 20px 0;
}

.dots-theme .dots-column-headers {
    display: grid;
    grid-template-columns: 40px repeat(10, 1fr);
    gap: 10px;
    margin-bottom: 10px;
}

.dots-theme .dots-column-headers span {
    text-align: center;
    font-weight: bold;
    color: #2c3e50;
}

.dots-theme .dots-row {
    display: grid;
    grid-template-columns: 40px repeat(10, 1fr);
    gap: 10px;
}

.dots-theme .dots-row-number {
    text-align: center;
    font-weight: bold;
    color: #2c3e50;
}

.dots-theme .dots-dot {
    width: 20px;
    height: 20px;
    background-color: #3498db;
    border-radius: 50%;
    margin: 0 auto;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.dots-theme .dots-summary {
    text-align: center;
    margin: 10px 0;
    font-size: 1.1rem;
    color: #2c3e50;
}

.dots-theme .dots-preview {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    justify-content: center;
    margin: 10px 0;
}

.dots-theme .dots-ellipsis {
    color: #7f8c8d;
    font-size: 1.2rem;
    margin: 0 5px;
}

.dots-theme .option {
    background-color: var(--background-color);
    border: 2px solid var(--border-color);
    color: var(--text-color);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.dots-theme .option:hover {
    background-color: var(--secondary-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.dots-theme .option.correct {
    background-color: #2ecc71;
    border-color: #27ae60;
}

.dots-theme .option.incorrect {
    background-color: #e74c3c;
    border-color: #c0392b;
}

.dots-theme .feedback {
    color: var(--accent-color);
}

.dots-theme .option-btn {
    background-color: var(--primary-color) !important;
    border: 2px solid var(--accent-color) !important;
    color: white !important;
    box-shadow: 0 4px 8px var(--shadow-color) !important;
    transition: all 0.3s ease !important;
    font-weight: bold !important;
}

.dots-theme .option-btn:hover {
    background-color: var(--secondary-color) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 12px var(--shadow-color) !important;
}

.dots-theme .option-btn.correct {
    background-color: #2ecc71 !important;
    border-color: #27ae60 !important;
    color: white !important;
    box-shadow: 0 4px 8px rgba(46, 204, 113, 0.4) !important;
    animation: pulse 0.5s ease-in-out !important;
}

.dots-theme .option-btn.incorrect {
    background-color: #e74c3c !important;
    border-color: #c0392b !important;
    color: white !important;
    box-shadow: 0 4px 8px rgba(231, 76, 60, 0.4) !important;
    animation: shake 0.5s ease-in-out !important;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

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

body.dots-theme #memo-area .memo-card-front {
    background-color: var(--primary-blue);
    border: 2px solid var(--primary-blue-dark);
    background-image: radial-gradient(circle at 50% 50%, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
}

body.dots-theme #memo-area .memo-card-back {
    background-color: var(--primary-green);
    border: 2px solid var(--primary-green-dark);
    background-image: radial-gradient(circle at 50% 50%, var(--primary-green) 0%, var(--primary-green-dark) 100%);
}

body.dots-theme #memo-area .memo-card.matched .memo-card-front,
body.dots-theme #memo-area .memo-card.matched .memo-card-back {
    border: 4px solid var(--primary-blue);
    box-shadow: 0 0 20px rgba(52, 152, 219, 0.7);
}

body.dots-theme #level-treasurer {
    background-color: var(--primary-blue) !important;
    border: 2px solid var(--primary-blue-dark);
}

.dots-theme .tab-btn {
    background-color: #f1c40f;
    border: 3px solid #e67e22;
    color: #2c3e50;
    box-shadow: 0 4px 8px rgba(241, 196, 15, 0.4);
    transition: all 0.3s;
}

.dots-theme .tab-btn:hover {
    background-color: #f39c12;
    box-shadow: 0 6px 12px rgba(243, 156, 18, 0.5);
}

.dots-theme .tab-btn.active {
    background-color: #e67e22;
    border-color: #d35400;
    color: white;
    box-shadow: 0 4px 8px rgba(230, 126, 34, 0.5);
}

.dots-theme .tab-btn.active:hover {
    background-color: #d35400;
    box-shadow: 0 6px 12px rgba(211, 84, 0, 0.6);
}

.dots-theme .tab-btn-desc {
    color: inherit;
    font-weight: normal;
    font-size: 0.9rem;
    opacity: 0.8;
}

.dots-theme .tab-btn-header {
    font-weight: bold;
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: inherit;
}

.dots-theme .tab-btn-icon {
    font-size: 2.6rem;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (max-width: 480px) {
    .dots-theme .container {
        width: 100%;
        max-width: 100%;
        box-sizing: border-box;
        overflow-x: hidden;
        border-radius: 10px;
        padding: 15px;
        margin: 10px 0;
    }

    .dots-theme .tab-btn-icon {
        font-size: 1.6rem;
        background-color: rgba(255, 255, 255, 0.2);
        border-radius: 50%;
        width: 30px;
        height: 30px;
        min-width: 30px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .dots-theme .result-screen .stats-btn,
    .dots-theme .result-screen .level-btn,
    .dots-theme .result-screen .menu-btn {
        width: 100%;
        max-width: 100%;
    }
}

.dots-theme #achievements-modal .modal-content {
    background-color: white;
    border: 4px solid var(--border-color);
    box-shadow: 0 10px 30px var(--shadow-color);
    border-radius: 25px;
    font-family: 'Quicksand', sans-serif;
    padding: 25px;
    position: relative;
}

.dots-theme #achievements-modal h2 {
    color: var(--accent-color);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 25px;
    text-align: center;
}

.dots-theme #achievements-modal .close-modal {
    background-color: var(--button-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 35px;
    height: 35px;
    font-size: 1.3rem;
    position: absolute;
    top: 15px;
    right: 15px;
    box-shadow: 0 4px 8px var(--shadow-color);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dots-theme #achievements-modal .close-modal:hover {
    background-color: var(--button-hover-color);
    transform: rotate(90deg);
}

.dots-theme #achievements-modal div[style*="display: flex; align-items: center;"] {
    background-color: var(--background-color);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    padding: 15px;
    margin-bottom: 12px;
    transition: all 0.3s;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.05);
}

.dots-theme #achievements-modal div[style*="display: flex; align-items: center;"]:hover {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.dots-theme #achievements-modal span[style*="font-size: 1.5rem;"] {
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    box-shadow: 0 3px 6px var(--shadow-color);
}

.dots-theme #achievements-modal strong {
    color: var(--accent-color);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 2px;
    display: block;
}

.dots-theme #achievements-modal small {
    color: var(--text-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

.dots-theme .level-btn,
.dots-theme .stats-btn {
    background-color: var(--button-color);
    border: 2px solid var(--accent-color);
    color: white;
    box-shadow: 0 4px 8px var(--shadow-color);
    text-shadow: none;
    font-weight: 500;
    transition: all 0.2s;
    border-radius: 10px;
    font-family: 'Quicksand', sans-serif;
}

.dots-theme .level-btn:hover,
.dots-theme .stats-btn:hover {
    background-color: var(--button-hover-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.dots-theme .result-screen .stats-btn,
.dots-theme .result-screen .level-btn,
.dots-theme .result-screen .menu-btn {
    background-color: var(--button-color);
    border: 2px solid var(--accent-color);
    color: white;
    box-shadow: 0 4px 8px var(--shadow-color);
    text-shadow: none;
    font-weight: 500;
    transition: all 0.2s;
    border-radius: 10px;
    font-family: 'Quicksand', sans-serif;
    padding: 12px 25px;
    width: 80%;
    max-width: 300px;
    margin: 10px;
}

.dots-theme .result-screen .stats-btn:hover,
.dots-theme .result-screen .level-btn:hover,
.dots-theme .result-screen .menu-btn:hover {
    background-color: var(--button-hover-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
}