:root {
    --bg-color: #0a0a0c;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary-color: #ff3e3e; /* Slasher Red */
    --primary-glow: rgba(255, 62, 62, 0.4);
    --accent-color: #00f0ff; /* Cyber Blue */
    --text-main: #ffffff;
    --text-muted: #8b9bb4;
    --success-color: #00ff9d;
    --error-color: #ff3e3e;
    --font-main: 'Outfit', sans-serif;
    --font-jp: 'Zen Kaku Gothic New', sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 50% 0%, #1a1a2e 0%, transparent 70%),
        radial-gradient(circle at 80% 80%, #150a0a 0%, transparent 50%);
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    pointer-events: none;
    z-index: -1;
}

.container {
    width: 100%;
    max-width: 800px;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: 0.2em;
    background: linear-gradient(180deg, #fff 0%, #a5a5a5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--primary-color);
    font-size: 1.2rem;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    font-weight: 600;
    text-shadow: 0 0 10px var(--primary-glow);
}

.question-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
    position: relative;
    overflow: hidden;
}

.question-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.stats-bar {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat .label {
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    margin-bottom: 0.2rem;
}

.stat span:not(.label) {
    font-size: 1.5rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.question-header {
    text-align: center;
    margin-bottom: 1rem;
}

.question-type {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.4rem 1rem;
    border-radius: 100px;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.target-value {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--accent-color);
    text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
}

.instruction {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-family: var(--font-jp);
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 3rem;
}

.option-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem;
    border-radius: 12px;
    color: var(--text-main);
    font-family: var(--font-jp);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.option-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.option-btn.selected {
    background: rgba(255, 255, 255, 0.9);
    color: #000;
    border-color: #fff;
    font-weight: 700;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.btn {
    padding: 1rem 3rem;
    border-radius: 100px;
    font-weight: 700;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    font-size: 1rem;
    text-transform: uppercase;
}

.btn.primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 0 20px var(--primary-glow);
}

.btn.primary:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 0 30px var(--primary-glow);
}

.btn.secondary {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: #fff;
}

.btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
}

.hidden {
    display: none !important;
}

.feedback {
    margin-top: 2rem;
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.feedback.correct {
    background: rgba(0, 255, 157, 0.1);
    border: 1px solid rgba(0, 255, 157, 0.3);
    color: var(--success-color);
}

.feedback.incorrect {
    background: rgba(255, 62, 62, 0.1);
    border: 1px solid rgba(255, 62, 62, 0.3);
    color: var(--error-color);
}

.feedback-text {
    font-weight: 700;
    font-size: 1.2rem;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes popIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

/* Tooltip Styles */
.tooltip {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(10, 10, 12, 0.95);
    border: 1px solid var(--primary-color);
    border-radius: 16px;
    padding: 1.5rem;
    width: 300px;
    text-align: center;
    backdrop-filter: blur(20px);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.8), 0 0 20px var(--primary-glow);
    z-index: 1000;
    pointer-events: none; /* Allow clicks to pass through if it overlaps? Actually, if it's visible, user is hovering. */
    animation: fadeIn 0.3s ease-out;
}

.tooltip img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.tooltip h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.2rem;
    text-transform: uppercase;
}

.tooltip p {
    font-family: var(--font-jp);
    color: var(--text-muted);
    font-size: 1rem;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Mobile Responsive */
@media (max-width: 600px) {
    h1 { font-size: 2.5rem; }
    .question-card { padding: 1.5rem; }
    .target-value { font-size: 2rem; }
    .options-grid { grid-template-columns: 1fr 1fr; }
}