/* Βασικό στυλ - Σκοτεινό θέμα */
:root {
    /* Fluid Typography: Το μέγεθος προσαρμόζεται αυτόματα στο πλάτος της οθόνης */
    --font-size-sm: clamp(0.8rem, 1.5vw + 0.5rem, 1rem);
    --font-size-base: clamp(1rem, 2vw + 0.5rem, 1.15rem);
    --font-size-lg: clamp(1.15rem, 2.5vw + 0.5rem, 1.5rem);
    --font-size-xl: clamp(1.5rem, 4vw + 0.5rem, 2.25rem);
    --font-size-xxl: clamp(2.25rem, 5vw + 1rem, 3rem);
}

body {
    background-color: #0d0d1a;
    color: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
}

#quiz-container {
    background: rgba(20, 20, 40, 0.8);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.2);
    text-align: center;
    max-width: 600px;
    width: 90%;
    border: 1px solid rgba(0, 255, 255, 0.3);
}

.lang-switch { margin-bottom: 20px; }

.lang-btn {
    background: transparent;
    color: #fff;
    border: 1px solid #00bfff; /* Light Blue */
    padding: 5px 15px;
    cursor: pointer;
    border-radius: 5px;
    margin: 0 5px;
    box-shadow: 0 0 5px #00bfff; /* Light Blue */
    transition: 0.3s;
}

.lang-btn.active {
    background: #00bfff; /* Light Blue */
    color: #000;
    box-shadow: 0 0 15px #00bfff; /* Light Blue */
}

#question-text {
    font-size: var(--font-size-lg);
    margin-bottom: 30px;
    text-shadow: 0 0 10px #00ffff;
    min-height: 70px; /* Λίγο παραπάνω χώρος για μεγαλύτερες ερωτήσεις */
}

.answers-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 20px;
}

.neon-btn {
    background: transparent;
    color: #00ffff;
    border: 2px solid #00ffff;
    padding: 15px;
    font-size: var(--font-size-base);
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5), inset 0 0 5px rgba(0, 255, 255, 0.3);
    transition: all 0.2s ease-in-out;
    text-transform: uppercase;
    box-sizing: border-box;
}

.neon-btn:hover {
    background: #00ffff;
    color: #000;
    box-shadow: 0 0 20px #00ffff, inset 0 0 10px #00ffff;
}

/* Correct answer selected by user: Dark Blue */
.neon-btn.selected {
    background: #007bff;
    color: #fff;
    border-color: #007bff;
    box-shadow: 0 0 20px #007bff, inset 0 0 10px #007bff;
}

/* The correct answer to show when user is wrong: Green */
.neon-btn.correct {
    background: #00ff00;
    color: #000;
    border-color: #00ff00;
    box-shadow: 0 0 20px #00ff00, inset 0 0 10px #00ff00;
}

/* Wrong answer selected by user: Red */
.neon-btn.wrong {
    background: #ff0000;
    color: #000;
    border-color: #ff0000;
    box-shadow: 0 0 20px #ff0000, inset 0 0 10px #ff0000;
}

#next-btn {
    background: transparent;
    color: #ffff00;
    border: 2px solid #ffff00;
    padding: 10px 20px;
    font-size: var(--font-size-base);
    border-radius: 5px;
    cursor: pointer;
    box-shadow: 0 0 10px #ffff00;
    display: none;
    margin: 0 auto;
    transition: 0.3s;
}

#next-btn:hover {
    background: #ffff00;
    color: #000;
}

#score-display {
    margin-top: 20px;
    font-size: var(--font-size-sm);
    color: #aaa;
}

#loading {
    color: #00ffff;
    font-size: 20px;
    animation: blink 1.5s infinite;
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

/* Animation for new question appearing */
@keyframes question-intro {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 600px) {
    .answers-grid { grid-template-columns: 1fr; } /* Οι απαντήσεις μπαίνουν η μία κάτω από την άλλη */

    /* Κάνει τα δευτερεύοντα κουμπιά του μενού κάθετα */
    .secondary-menu {
        flex-direction: column;
    }

    /* Μειώνει το padding στον κεντρικό container για εξοικονόμηση χώρου */
    #quiz-container {
        padding: 20px;
    }
}

/* --- Main Menu Styles --- */
#main-menu #quiz-container {
    background: none;
    border: none;
    box-shadow: none;
}

#menu-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    width: 90%;
    max-width: 500px;
}

#main-title {
    font-size: var(--font-size-xxl);
    font-weight: bold;
    color: #fff;
    text-shadow: 0 0 10px #00ff00, 0 0 20px #00ff00, 0 0 30px #00ffff, 0 0 40px #00ffff; /* Green and Blue */
    margin-bottom: 20px;
}

.menu-btn {
    text-decoration: none;
    text-align: center;
    width: 100%;
    box-sizing: border-box;
}

.play-btn {
    background: transparent;
    color: #00ffff;
    border: 2px solid #00ffff;
    padding: 20px;
    font-size: var(--font-size-xl);
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.6), inset 0 0 8px rgba(0, 255, 255, 0.4);
    transition: all 0.2s ease-in-out;
    text-transform: uppercase;
    width: 100%;
    box-sizing: border-box;
}

.play-btn:hover {
    background: #00ffff;
    color: #000;
    box-shadow: 0 0 25px #00ffff, inset 0 0 12px #00ffff;
}

.secondary-menu {
    display: flex;
    gap: 15px;
    width: 100%;
    margin-top: 20px;
}

.secondary-btn {
    color: #007bff; /* Dark Blue */
    border: 1px solid #007bff; /* Dark Blue */
    padding: 10px;
    font-size: var(--font-size-sm);
    border-radius: 5px;
    box-shadow: 0 0 8px rgba(0, 123, 255, 0.5); /* Dark Blue */
    transition: all 0.2s ease-in-out;
}

.secondary-btn:hover {
    background: #007bff; /* Dark Blue */
    color: #000;
    box-shadow: 0 0 15px #007bff; /* Dark Blue */
}

/* Override hover for special back buttons */
#back-to-games-btn:hover,
#back-btn:hover {
    background: #c71585;
    color: #000;
    box-shadow: 0 0 20px #c71585, 0 0 30px #ff1493;
}

/* --- Quiz Start Screen Styles --- */
#start-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 30px; /* Increased gap for better spacing */
}

#start-title {
    font-size: var(--font-size-xl);
    text-shadow: 0 0 10px #00ffff;
}

/* --- Feedback Message Styles --- */
#feedback-container {
    min-height: 50px; /* Increased height */
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.feedback-text {
    font-size: var(--font-size-lg);
}

.feedback-points {
    font-size: var(--font-size-base);
    margin-top: -5px;
}

.feedback-correct {
    color: #007bff; /* Dark Blue */
}

.feedback-wrong {
    color: #ff0000; /* Red */
}

/* --- HUD Styles --- */
#hud-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 0 10px;
}

#lives-container {
    font-size: var(--font-size-xl);
    letter-spacing: 4px;
}

#timer-container {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: transparent;
    border: 4px solid #00ffff;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px #00ffff;
}

#timer-text {
    font-size: var(--font-size-xl);
    font-weight: bold;
    color: #00ffff;
}

/* --- Scoreboard Styles --- */
.scoreboard-container h1 {
    text-shadow: 0 0 15px #00bfff;
    color: #00bfff;
}

#scoreboard-loading {
    color: #00ffff;
    font-size: var(--font-size-base);
    margin: 20px 0;
}

#scoreboard-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

#scoreboard-list li {
    background: rgba(0, 0, 0, 0.2);
    padding: 12px 15px;
    margin-bottom: 8px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-base);
    border-left: 4px solid #00ffff; /* Blue */
    transition: background 0.2s;
}

#scoreboard-list li:hover {
    background: rgba(0, 255, 255, 0.1); /* Blue */
}

#scoreboard-list li .rank {
    font-weight: bold;
    color: #00ffff;
    flex-basis: 25%;
}

#scoreboard-list li .name {
    color: #ffffff;
    flex-basis: 50%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#scoreboard-list li .score {
    font-weight: bold;
    color: #00ff00;
    flex-basis: 25%;
    text-align: right;
}

/* Κανόνες για το scoreboard σε μικρές οθόνες */
@media (max-width: 600px) {
    #scoreboard-list li {
        flex-direction: column; /* Κάθετο layout */
        align-items: flex-start; /* Στοίχιση στην αρχή */
        gap: 5px; /* Μικρό κενό μεταξύ των στοιχείων */
    }

    #scoreboard-list li .name {
        white-space: normal; /* Επιτρέπει στο όνομα να αλλάξει γραμμή */
    }

    #scoreboard-list li .score {
        text-align: left; /* Στοίχιση του σκορ αριστερά */
    }
}