#ai-quiz-popup {
    position: fixed;
    top: 0; left: 0;
    width: 100vw; height: 100vh;
    background: rgba(0,0,0,0.7);
    z-index: 99999;
    display: none;
    overflow-y: auto;
}

.quiz-content {
    transform: translate(-50%, -50%);
    background: #fff;
    max-width: 420px;
    width: 92vw;
    border-radius: 22px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.25);
    font-family: 'Segoe UI', 'Arial', sans-serif;
    min-width: 300px;
    animation: quizFadeIn 0.4s;
    overflow: hidden;
    padding: 0;
    z-index: 100000;
}

@keyframes quizFadeIn {
    from { opacity: 0; transform: translate(-50%, -60%);}
    to   { opacity: 1; transform: translate(-50%, -50%);}
}

#ai-quiz-close {
    position: absolute;
    top: 18px; right: 18px;
    width: 36px; height: 36px;
    background: #ff9800;
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 22px;
    font-weight: bold;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 2;
    box-shadow: 0 2px 8px rgba(255,152,0,0.15);
}
#ai-quiz-close:hover {
    background: #fb8c00;
}

.quiz-header {
    background: #403D96;
    padding: 28px 24px 18px 24px;
    border-radius: 10px 10px 0 0;
    text-align: center;
    margin-bottom: 0;
}
.quiz-header h3 {
    margin: 0;
    font-size: 1.5em;
    color: #fff !important;
    font-weight: 800;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.quiz-header h3 .emoji {
    font-size: 1.3em;
    margin-right: 6px;
}

.quiz-inner {
    padding: 24px 24px 16px 24px;
}

.quiz-question {
    font-size: 1.15em;
    color: #222;
    margin: 0 0 22px 0;
    font-weight: 600;
    text-align: center;
    padding: 0 0 10px 0;
    border-bottom: 1px solid #e0e0e0;
}

.quiz-options {
    margin: 24px 0 18px 0;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.quiz-option {
    background: #f5f7fa;
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    padding: 13px 16px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: border 0.2s, background 0.2s, box-shadow 0.2s;
    font-size: 1.08em;
    font-weight: 500;
    box-shadow: 0 1px 4px rgba(33,150,243,0.04);
    position: relative;
}
.quiz-option input[type="radio"] {
    margin-right: 12px;
    accent-color: #1976d2;
    transform: scale(1.2);
}
.quiz-option label {
    cursor: pointer;
    color: #333;
    width: 100%;
    user-select: none;
}
.quiz-option.selected, .quiz-option:hover {
    border: 2px solid #1976d2;
    background: #e3f0fd;
    box-shadow: 0 2px 8px rgba(33,150,243,0.10);
}
/* .quiz-option.selected::after {
    content: '✔';
    color: #1976d2;
    font-size: 1.2em;
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    font-weight: bold;
    background: #fff;
    border-radius: 50%;
    padding: 2px 6px;
    box-shadow: 0 1px 4px rgba(33,150,243,0.10);
} */

.quiz-submit-btn {
    width: 100%;
    background: linear-gradient(90deg, #1976d2 60%, #42a5f5 100%);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 14px 0;
    font-size: 1.15em;
    font-weight: 700;
    cursor: pointer;
    margin: 18px 0 0 0;
    display: block;
    box-shadow: 0 2px 8px rgba(33,150,243,0.10);
    letter-spacing: 0.5px;
    transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
}
.quiz-submit-btn:hover {
    background: linear-gradient(90deg, #1565c0 60%, #1976d2 100%);
    box-shadow: 0 4px 16px rgba(33,150,243,0.18);
    transform: translateY(-2px) scale(1.03);
}

.quiz-content #ai-quiz-close {
    top: 0px;
    right: 2px;
}

.quiz-result {
    margin-top: 18px;
    padding: 12px;
    border-radius: 8px;
    font-size: 1.08em;
    text-align: center;
}
.correct-answer {
    background: #e8f5e9;
    color: #2e7d32;
    border-left: 4px solid #2e7d32;
}
.wrong-answer {
    background: #ffebee;
    color: #c62828;
    border-left: 4px solid #c62828;
}
.quiz-error {
    color: #c62828;
    background: #fff3f3;
    border: 1px solid #ffcdd2;
    border-radius: 8px;
    padding: 10px;
    margin: 10px 0;
    text-align: center;
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 10px;
}
.quiz-nav-btn {
    background: linear-gradient(90deg, #42a5f5 0%, #1976d2 100%);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 12px 28px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(33,150,243,0.10);
    letter-spacing: 0.5px;
    transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
}
.quiz-nav-btn:hover {
    background: linear-gradient(90deg, #1976d2 0%, #42a5f5 100%);
    box-shadow: 0 4px 16px rgba(33,150,243,0.18);
    transform: translateY(-2px) scale(1.03);
}
.quiz-nav-btn#prev-quiz {
    margin-right: auto;
}
.quiz-nav-btn#next-quiz {
    margin-left: auto;
}
.quiz-summary ul {
    padding-left: 18px;
    text-align: left;
}
.quiz-summary h3 {
    text-align: center;
    color: #1976d2;
    margin-bottom: 18px;
}

.quiz-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 220px;
    padding: 32px 0;
}

.quiz-spinner {
    border: 5px solid #ffe0b2;
    border-top: 5px solid #ff9800;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 1s linear infinite;
    margin-bottom: 18px;
}

@keyframes spin {
    0% { transform: rotate(0deg);}
    100% { transform: rotate(360deg);}
}

.quiz-loading-text {
    color: #ff9800;
    font-size: 1.15em;
    font-weight: 600;
    text-align: center;
    letter-spacing: 0.5px;
}

@media (max-width: 600px) {
    .quiz-content {
        height: 80vh;
        overflow-y: auto;
        padding: 15px !important;
    }
    .quiz-header h3 {
        font-size: 1.1em;
        text-align: center;
    }
    .quiz-inner {
        padding: 10px 2vw 8px 2vw;
    }
    .quiz-question {
        font-size: 1em;
    }
    .quiz-submit-btn {
        width: 100%;
    }

    .quiz-summary {
        padding: 0 !important;
    }

    .quiz-summary h3 {
        margin: 0 !important;
    }

    .modal-content {
        height: 77vh;
        overflow-y: auto;
    }

    .quiz-option {
        padding: 12px 15px;
        margin: 5px 0;
        border: 2px solid #e0e0e0;
        border-radius: 8px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    #ai-quiz-close {
        color: #fff !important;
    }

    #ai-quiz-popup {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100%;
        background: rgba(0, 0, 0, 0.7);
        z-index: 99999;
        display: none;
        overflow-y: auto;
    }

    .result-message {
        font-size: 20px;
        margin: 10px 0;
        padding: 10px;
        border-radius: 8px;
    }

    .result-message .correct p {
        margin: 0 !important;
    }

    .question-stats h4 {
        margin:0px 10px 10px 10px;
        color: #333;
        margin: 8px 0;
    }

    .question-stats {
        padding-top: 1px;
    }

    .quiz-content-user {
        overflow-y: auto;
        padding: 0 !important;
        width: 100%;
    }

    .modal-content h2 {
        margin: 0 !important;
    }

}

.ai-quiz-popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999999;
}

.quiz-content {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    max-width: 600px;
    width: 90%;
    margin: 20px auto;
    position: relative;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

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

.quiz-header h3 {
    margin: 0;
    color: #333;
    font-size: 24px;
}

.quiz-question {
    font-size: 18px;
    margin-bottom: 20px;
    color: #333;
}

.quiz-options {
    margin-bottom: 20px;
}

.quiz-option {
    padding: 12px 15px;
    margin: 8px 0;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.quiz-option:hover {
    background: #f5f5f5;
}

.quiz-option.selected {
    border-color: #4CAF50;
    background: #f1f8e9;
}

.quiz-option input[type="radio"] {
    margin-right: 10px;
}

.quiz-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.quiz-nav-btn, .quiz-submit-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s ease;
}

.quiz-nav-btn {
    background: #f5f5f5;
    color: #333;
}

.quiz-submit-btn {
    background: #4CAF50;
    color: white;
    margin-top: 0 !important;

}

.quiz-nav-btn:hover {
    background: #e0e0e0;
}

.quiz-submit-btn:hover {
    background: #45a049;
}

.quiz-loading {
    text-align: center;
    padding: 20px;
}

.quiz-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #4CAF50;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 15px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.quiz-error {
    text-align: center;
    color: #d32f2f;
    padding: 20px;
}

.error-icon {
    font-size: 24px;
    margin-bottom: 10px;
    display: block;
}

.quiz-summary {
    text-align: center;
    padding: 20px;
}

.result-message {
    font-size: 20px;
    margin: 20px 0;
    padding: 15px 15px 1px 15px;
    border-radius: 8px;
}

.result-message.correct {
    background: #e8f5e9;
    color: #2e7d32;
}

.result-message.incorrect {
    background: #ffebee;
    color: #c62828;
}

.new-badges {
    margin: 20px 0;
    padding: 15px;
    background: #fff3e0;
    border-radius: 8px;
}

.new-badges h4 {
    color: #e65100;
    margin: 0 0 10px;
}

.new-badges ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.new-badges li {
    padding: 8px;
    margin: 5px 0;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#ai-quiz-close {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #666;
    padding: 5px;
    line-height: 1;
}

#ai-quiz-close:hover {
    color: #333;
}