* {
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
}

body {
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.quiz-container {
    background-color: #ffffff;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0,1);
    padding: 30px;
    width: 100%;
    max-width: 500px;
    text-align: center;
}

.screen {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    font-weight: bold;
    color: #555;
}

#timer {
    color: #e74c3c;
}

.results-gif {
    width: 100%;
    max-width: 260px;
    height: auto;
    margin: 0 auto;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

button {
    padding: 12px 20px;
    font-size: 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    background-color: #3498db;
    color: white;
    transition: background 0.2s;
}

button:hover {
    background-color: #2980b9;
}

/* Option Button Specifies */
.option-btn {
    background-color: #ecf0f1;
    color: #333;
    text-align: left;
}
.option-btn:hover {
    background-color: #d5dbdb;
}

/* Answer State Feedbacks */
.correct {
    background-color: #2ecc71;
    color: white;
}

.wrond {
    background-color: #e74c3c;
    color: white;
}

.hide {
    display: none;
}