/* =========================================
   BASE STYLES & LAYOUT
   ========================================= */
.adv-quiz-wrapper { 
    max-width: 800px; margin: 40px auto; 
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; 
    perspective: 1000px; 
}

/* Default Variables (Clean Blue) */
.adv-quiz-wrapper {
    --bg-card: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --border-color: #e9ecef;
    --primary: #3498db;
    --primary-hover: #2980b9;
    --accent: #f8f9fa;
    --correct-bg: #d4edda; --correct-border: #28a745; --correct-text: #155724;
    --wrong-bg: #f8d7da; --wrong-border: #dc3545; --wrong-text: #721c24;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
}

/* THEME: DARK NIGHT */
.adv-quiz-wrapper.theme-dark {
    --bg-card: #2c3e50;
    --text-main: #ecf0f1;
    --text-muted: #bdc3c7;
    --border-color: #34495e;
    --primary: #00cec9;
    --primary-hover: #00b894;
    --accent: #34495e;
    --correct-bg: #00b894; --correct-border: #00cec9; --correct-text: #fff;
    --wrong-bg: #d63031; --wrong-border: #ff7675; --wrong-text: #fff;
    --shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* THEME: MINIMAL */
.adv-quiz-wrapper.theme-minimal {
    --bg-card: #ffffff;
    --text-main: #000000;
    --text-muted: #444444;
    --border-color: #000000;
    --primary: #000000;
    --primary-hover: #333333;
    --accent: #f0f0f0;
    --radius: 0px;
    --shadow: 5px 5px 0px rgba(0,0,0,1);
}

/* THEME: PLAYFUL */
.adv-quiz-wrapper.theme-playful {
    --bg-card: #fff0f5;
    --text-main: #2d3436;
    --text-muted: #636e72;
    --border-color: #fab1a0;
    --primary: #e84393;
    --primary-hover: #d63031;
    --accent: #ffeaa7;
    --radius: 25px;
    --shadow: 0 10px 20px rgba(232, 67, 147, 0.2);
}

/* COMPONENTS */
.quiz-setup, .quiz-question-card, .quiz-results { 
    background: var(--bg-card); 
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 40px; 
    border-radius: var(--radius); 
    box-shadow: var(--shadow); 
    overflow: hidden; 
    position: relative; 
    transition: all 0.3s ease;
}

.quiz-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 15px; }

.quiz-timer { 
    font-size: 1.1rem; font-weight: bold; 
    color: var(--text-main); background: var(--accent); 
    padding: 6px 14px; border-radius: var(--radius); 
    border: 1px solid var(--border-color); 
}
.quiz-timer.danger { color: var(--wrong-text); background: var(--wrong-bg); animation: pulse-red 1s infinite; }

.tts-btn { background: transparent; border: 1px solid var(--text-muted); color: var(--text-muted); padding: 6px 14px; border-radius: var(--radius); cursor: pointer; }
.tts-btn:hover { background: var(--accent); color: var(--text-main); }

/* ---- CIRCLE BUTTONS (UPDATED) ---- */
.qz-circles { 
    display: flex; gap: 15px; justify-content: center; margin: 25px 0; 
}
.qz-circle-btn { 
    width: 40px; height: 40px; 
    border-radius: 50%; 
    background: var(--bg-card); 
    border: 2px solid var(--border-color); 
    color: var(--text-main); 
    font-weight: bold; 
    display: flex; align-items: center; justify-content: center; 
    cursor: pointer; 
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}
.qz-circle-btn:hover { border-color: var(--primary); transform: translateY(-3px); }
.qz-circle-btn.active { 
    background: var(--primary); 
    color: #fff; /* Always white text on active */
    border-color: var(--primary); 
    transform: scale(1.15); 
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.qz-group-list { background: var(--accent); padding: 20px; border-radius: var(--radius); max-height: 250px; overflow-y: auto; border: 1px solid var(--border-color); margin-bottom: 25px; }
.quiz-body { font-size: 1.4rem; line-height: 1.8; margin: 10px 0 30px 0; font-weight: 500; }

.quiz-opt-btn { 
    background: var(--bg-card); border: 2px solid var(--border-color); 
    padding: 18px 20px; margin-bottom: 12px; border-radius: var(--radius); 
    cursor: pointer; font-size: 1.1rem; color: var(--text-main);
    transition: transform 0.1s, border-color 0.2s, background 0.2s; position: relative; 
}
.quiz-opt-btn:hover:not(.disabled) { border-color: var(--primary); background: var(--accent); transform: translateX(5px); }
.quiz-opt-btn.correct { background: var(--correct-bg) !important; border-color: var(--correct-border) !important; color: var(--correct-text) !important; }
.quiz-opt-btn.wrong { background: var(--wrong-bg) !important; border-color: var(--wrong-border) !important; color: var(--wrong-text) !important; opacity: 0.9; }
.quiz-opt-btn.tf-btn { display: inline-block; width: 48%; text-align: center; margin-right: 2%; margin-bottom: 0; }
.quiz-opt-btn.tf-btn:last-child { margin-right: 0; }
.tf-container { display: flex; justify-content: space-between; width: 100%; margin-bottom: 20px; }

/* INPUTS */
.quiz-text-input { border: 2px solid var(--border-color); border-radius: var(--radius); font-size: 1.2rem; padding: 10px; width: 100%; background: var(--bg-card); color: var(--text-main); }
.quiz-text-input:focus { border-color: var(--primary); outline: none; }
.quiz-text-input.inline-fitb { 
    display: inline-block !important; width: auto !important; min-width: 80px; 
    border: 0; border-bottom: 2px solid var(--text-muted); border-radius: 0; 
    background: var(--accent); color: var(--text-main); 
    margin: 0 4px; padding: 2px 8px; font-weight: bold; height: 32px; vertical-align: baseline;
}
.quiz-text-input.inline-fitb:focus { border-bottom-color: var(--primary); background: var(--bg-card); }

/* FEEDBACK */
.feedback-msg { margin-top: 20px; padding: 15px; border-radius: var(--radius); text-align: center; font-weight: bold; }
.feedback-msg.correct { background: var(--correct-bg); color: var(--correct-text); }
.feedback-msg.wrong { background: var(--wrong-bg); color: var(--wrong-text); }
.fitb-correction { display: inline-block; color: #e74c3c; font-weight: bold; font-size: 0.9rem; margin-left: 5px; animation: fadeIn 0.5s ease both; vertical-align: middle; }

/* BUTTONS */
.qz-start-btn, .qz-next-btn, .qz-submit-btn { 
    background: var(--primary); color: #fff; border: none; padding: 14px 40px; 
    border-radius: var(--radius); cursor: pointer; font-size: 1.1rem; font-weight: bold; 
    display: block; width: 100%; margin-top: 20px; transition: transform 0.1s, box-shadow 0.2s; 
}
.qz-start-btn:hover, .qz-next-btn:hover, .qz-submit-btn:hover { transform: translateY(-2px); background: var(--primary-hover); }
.qz-next-btn { display: none; background: #27ae60; }

/* ANIMATIONS */
.anim-fade .quiz-opt-btn { animation: fadeIn 0.6s ease both; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.anim-slide-up .quiz-opt-btn { animation: slideUp 0.5s ease both; }
@keyframes slideUp { from { opacity: 0; transform: translateY(50px); } to { opacity: 1; transform: translateY(0); } }
.anim-slide-left .quiz-opt-btn { animation: slideLeft 0.5s ease both; }
@keyframes slideLeft { from { opacity: 0; transform: translateX(-50px); } to { opacity: 1; transform: translateX(0); } }
.anim-slide-right .quiz-opt-btn { animation: slideRight 0.5s ease both; }
@keyframes slideRight { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
.anim-zoom .quiz-opt-btn { animation: zoomSpring 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) both; }
@keyframes zoomSpring { from { opacity: 0; transform: scale(0.5); } to { opacity: 1; transform: scale(1); } }
.anim-flip-x .quiz-opt-btn { animation: flipInX 0.8s cubic-bezier(0.455, 0.030, 0.515, 0.955) both; backface-visibility: visible; }
@keyframes flipInX { 0% { transform: perspective(400px) rotateX(90deg); opacity: 0; } 100% { transform: perspective(400px) rotateX(0deg); opacity: 1; } }
.anim-flip-y .quiz-opt-btn { animation: flipInY 0.8s cubic-bezier(0.455, 0.030, 0.515, 0.955) both; }
@keyframes flipInY { 0% { transform: perspective(400px) rotateY(90deg); opacity: 0; } 100% { transform: perspective(400px) rotateY(0deg); opacity: 1; } }
.anim-bounce .quiz-opt-btn { animation: bounceDrop 0.8s both; transform-origin: center bottom; }
@keyframes bounceDrop { 0% { opacity: 0; transform: translate3d(0, -200px, 0); } 40% { opacity: 1; transform: translate3d(0, 0, 0); } 65% { transform: translate3d(0, -10px, 0); } 75% { transform: translate3d(0, 0, 0); } 100% { transform: none; } }
.anim-rotate .quiz-opt-btn { animation: rotateInUpLeft 0.7s both; transform-origin: left bottom; }
@keyframes rotateInUpLeft { from { transform-origin: left bottom; transform: rotate3d(0, 0, 1, 45deg); opacity: 0; } to { transform-origin: left bottom; transform: translate3d(0, 0, 0); opacity: 1; } }
.anim-elastic .quiz-opt-btn { animation: elasticSlide 1s ease both; }
@keyframes elasticSlide { 0% { opacity: 0; transform: translateX(-100px); } 60% { opacity: 1; transform: translateX(20px); } 80% { transform: translateX(-5px); } 100% { transform: translateX(0); } }
@keyframes pulse-red { 0% { opacity: 1; } 50% { opacity: 0.5; } 100% { opacity: 1; } }
.anim-pulse { animation: pulse 0.5s; }
.anim-shake { animation: shake 0.5s; }
@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);} }