:root {
    --bg-color: #050505;
    --text-main: #F2F2F2;
    --text-secondary: #A0A0A0;
    --accent-color: #D4AF37;
    --accent-hover: #AA8C2C;
    --card-bg: #0f0f0f;
    --border-color: rgba(212, 175, 55, 0.3);
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

.app-container {
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    padding: 0 1rem;
}

.background-ambient {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80vw;
    height: 80vh;
    background: radial-gradient(circle, rgba(201, 162, 77, 0.15) 0%, transparent 60%);
    z-index: -1;
    pointer-events: none;
    filter: blur(50px);
}

.main-header {
    width: 100%;
    padding: 2.5rem 1rem;
    text-align: center;
    z-index: 10;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--accent-color);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.quiz-container {
    width: 100%;
    max-width: 600px;
    margin-top: 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 10;
}

.progress-bar {
    width: 100%;
    height: 2px;
    background-color: #333;
    margin-bottom: 3rem;
    position: relative;
}

.progress-fill {
    height: 100%;
    background-color: var(--accent-color);
    width: 0%;
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(201, 162, 77, 0.5);
}

.card {
    width: 100%;
    background: transparent;
    /* Minimalist, clean look on black */
    text-align: center;
    animation: fadeIn 0.8s ease forwards;
}

.question-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    color: var(--text-main);
    margin-bottom: 2.5rem;
    line-height: 1.4;
    font-weight: 400;
}

.options-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.option-btn {
    background: transparent;
    border: 1px solid #333;
    padding: 1.25rem 1.5rem;
    border-radius: 4px;
    /* More editorial/sharp feel */
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.option-btn:hover {
    border-color: var(--accent-color);
    background: rgba(201, 162, 77, 0.05);
    color: var(--text-main);
}

.option-btn:active {
    transform: scale(0.99);
}

.btn-primary {
    background-color: var(--accent-color);
    color: #000;
    border: none;
    padding: 1.2rem 3rem;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 2px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    margin-top: 2rem;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 0 15px rgba(201, 162, 77, 0.4);
}

/* Animations */
.fade-in {
    animation: fadeIn 0.6s ease forwards;
    opacity: 0;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 640px) {
    .question-title {
        font-size: 1.5rem;
    }

    .option-btn {
        padding: 1.1rem;
    }
}