* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}
:root {
    --bg-dark: #070629;
    --neon-blue: #00e5ff;
    --neon-shadow: 0 0 10px rgba(0, 229, 255, 0.8), 0 0 20px rgba(0, 229, 255, 0.4);
    --text-neon: #e0ffff;
    --question-height: 150px;
    --border-radius-pill: 40px;
    --neon-purple: #7c3aed;
    --neon-green: #10b981;
    --neon-red: #ef4444;
    --neon-magenta: #ff00cc;
    --neon-shadow-magenta: 0 0 10px var(--neon-magenta), 0 0 25px var(--neon-magenta), 0 0 50px rgba(255, 0, 204, 0.7);
}
body {
    width: 100%;
    min-height: 100vh;
    background: var(--bg-dark);
    color: var(--text-neon);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 20px; 
}
.container {
    background-color: transparent;
    box-shadow: none;
    width: 95%;
    max-width: 900px;
    padding: 20px 20px; 
    display: flex !important;
    flex-direction: column;
    align-items: center;
    gap: 30px; 
}
#mainHeading, #subHeading {
    font-size: 4em;
    font-weight: 800; 
    text-align: center;
    margin-bottom: 0;
    line-height: 1.1;
}
.quiz-title {
    font-size: 2.5em !important; 
    margin-top: 5px !important; 
    margin-bottom: 20px !important; 
}
.neon-cta-line1 {
    color: var(--neon-blue);
    text-shadow: 0 0 5px var(--neon-blue), 0 0 20px var(--neon-blue), 0 0 40px rgba(0, 229, 255, 0.5);
    margin-top: 30px; 
}
.neon-cta-line2 {
    color: var(--neon-magenta);
    text-shadow: var(--neon-shadow-magenta);
    margin-bottom: 60px;
}
.question-box-style {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    min-height: var(--question-height);
    max-width: 700px;
    padding: 20px 40px;
    margin: 0 auto 20px auto; 
    background-color: rgba(0, 0, 0, 0.4); 
    border: 2px solid var(--neon-blue);
    border-radius: var(--border-radius-pill);
    box-shadow: var(--neon-shadow);
    background-image: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), 
                      linear-gradient(to right, #00e5ff, #00ffff, #00e5ff); 
    background-origin: border-box;
    background-clip: padding-box, border-box;
}
.question {
    font-size: 1.5em;
    font-weight: 600;
    text-align: center;
    color: var(--text-neon);
    text-shadow: 0 0 3px var(--neon-blue);
}
.choices {
    display: flex;
    flex-direction: column; 
    gap: 15px;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}
.choice {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    height: 70px;
    padding: 15px 30px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    width: 100% !important; 
    background-color: rgba(0, 0, 0, 0.4); 
    border: 2px solid var(--neon-blue);
    border-radius: var(--border-radius-pill);
    box-shadow: var(--neon-shadow);
    transition: all 0.2s ease;
    text-shadow: 0 0 2px rgba(0, 229, 255, 0.5);
}
.choice:hover {
    background-color: rgba(0, 229, 255, 0.1); 
    box-shadow: 0 0 15px var(--neon-blue), 0 0 30px rgba(0, 229, 255, 0.6);
    transform: scale(1.02);
}
.choice.selected {
    background-color: rgba(0, 123, 255, 0.5);
    border-color: #00ffff;
    box-shadow: 0 0 10px #00ffff, 0 0 20px #00ffff;
}
.choice.correct {
    background-color: var(--neon-green) !important; 
    border-color: var(--neon-green) !important;
    box-shadow: 0 0 10px var(--neon-green), 0 0 20px var(--neon-green) !important;
    color: var(--bg-dark) !important;
}
.choice.incorrect {
    background-color: var(--neon-red) !important; 
    border-color: var(--neon-red) !important;
    box-shadow: 0 0 10px var(--neon-red), 0 0 20px var(--neon-red) !important;
    color: var(--bg-dark) !important;
}
.quiz-controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    width: 100%;
    max-width: 350px;
    margin: 20px auto 0 auto;
}
.btn {
    width: 100%;
    max-width: 350px;
    padding: 15px 25px;
    font-size: 1.2em;
    font-weight: 700;
    border-radius: 10px;
    transition: all 0.3s ease;
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--text-neon);
    border: 2px solid var(--neon-blue);
    box-shadow: var(--neon-shadow);
}
.btn:hover {
    background-color: rgba(0, 229, 255, 0.1);
    box-shadow: 0 0 15px var(--neon-blue), 0 0 30px rgba(0, 229, 255, 0.6);
    transform: translateY(-2px);
}
.secondary-btn {
    border-color: var(--neon-purple) !important; 
    box-shadow: 0 0 10px var(--neon-purple), 0 0 20px rgba(124, 58, 237, 0.5);
}
.timer {
    position: fixed;
    top: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--bg-dark);
    border: 3px solid var(--neon-blue);
    font-size: 1.5em;
    font-weight: 700;
    color: var(--text-neon);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--neon-shadow);
    z-index: 20;
}
.scoreCard {
    font-size: 1.8em;
    font-weight: 700;
    margin-top: 30px;
    color: var(--text-neon);
    text-shadow: 0 0 5px var(--neon-blue);
}
@keyframes slide-down {
    0% { transform: translate(-50%, -100%); opacity: 0; }
    10% { transform: translate(-50%, 0); opacity: 1; }
    90% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, -100%); opacity: 0; }
}
.alert {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    background-color: rgba(0, 0, 0, 0.9);
    border: 1px solid var(--neon-blue);
    border-top: none;
    border-bottom-left-radius: 8px;
    border-bottom-right-radius: 8px;
    padding: 12px 25px;
    font-size: 1.1em;
    color: var(--text-neon);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5), 0 0 10px var(--neon-blue);
    display: none;
}
.alert-success {
    border-color: var(--neon-green) !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5), 0 0 10px var(--neon-green) !important;
}
.alert-error {
    border-color: var(--neon-red) !important;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5), 0 0 10px var(--neon-red) !important;
}
.category-selection {
    display: grid;
    grid-template-columns: repeat(5, 1fr); 
    gap: 15px;
    width: 100%;
    max-width: 900px;
    margin: 40px auto;
}
.category-btn {
    width: 100% !important;
    padding: 20px 10px !important;
    font-size: 1.0em !important;
    font-weight: 700;
    border-radius: 10px;
    text-align: center;
    background-color: rgba(0, 0, 0, 0.6);
    color: var(--text-neon);
    border: 2px solid var(--neon-magenta);
    box-shadow: 0 0 8px var(--neon-magenta);
    transition: all 0.3s ease;
}
.category-btn:hover {
    background-color: rgba(255, 0, 204, 0.1);
    box-shadow: 0 0 15px var(--neon-magenta), 0 0 30px rgba(255, 0, 204, 0.6);
    transform: translateY(-3px);
}
@media screen and (max-width: 600px) {
    .question-box-style {
        min-height: 100px;
        padding: 15px 20px;
    }
    .question {
        font-size: 1.2em;
    }
    .choices {
        max-width: 90%;
    }
    .timer {
        width: 50px;
        height: 50px;
        font-size: 1.2em;
    }
    #mainHeading, #subHeading {
        font-size: 3em;
    }
    .category-selection {
        grid-template-columns: 1fr;
        max-width: 90%;
    }
}
.question-box-style.final-score {
    min-height: 180px; 
}
.question-box-style .question {
    font-size: 1.8em; 
    font-weight: 700;
}