:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --background-color: #f5f6fa;
    --text-color: #2c3e50;
    --transition-speed: 0.3s;
    --shadow-color: rgba(44, 62, 80, 0.1);
    --gradient-text: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
}

.question-container {
    margin-top: 10vh;
    font-size: 2.5rem;
    text-align: center;
    opacity: 1;
    transition: opacity var(--transition-speed);
    min-height: 3rem;
    font-weight: 600;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
    padding: 0.5rem 1rem;
}

.question-container::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-text);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.5s ease;
}

.question-container:not(.fade)::after {
    transform: scaleX(1);
    transform-origin: left;
}

.question-container.fade {
    opacity: 0;
    transform: translateY(10px);
}

.options-container {
    margin-top: 5rem;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 800px;
    width: 100%;
}

.option-button {
    padding: 1.5rem;
    font-size: 1.1rem;
    background-color: white;
    border: 2px solid var(--primary-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 4px 6px var(--shadow-color);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.option-button .hotkey-hint {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    opacity: 0.8;
}

.option-button:hover .hotkey-hint {
    background: var(--secondary-color);
    opacity: 1;
}

.option-button:hover {
    transform: translateY(-3px) rotateX(5deg);
    box-shadow: 0 8px 15px var(--shadow-color);
    border-color: var(--secondary-color);
}

.option-button:active {
    transform: translateY(-1px) rotateX(2deg);
}

.reroll-button {
    grid-column: span 2;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    box-shadow: 0 4px 6px var(--shadow-color);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.reroll-button:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px var(--shadow-color);
}

.reroll-button:active {
    transform: translateY(0);
    box-shadow: 0 4px 6px var(--shadow-color);
}

/* Ripple effect */
.option-button::after,
.reroll-button::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    background-image: radial-gradient(circle, rgba(255, 255, 255, 0.7) 10%, transparent 10.01%);
    background-repeat: no-repeat;
    background-position: 50%;
    transform: scale(10, 10);
    opacity: 0;
    transition: transform 0.5s, opacity 1s;
}

.option-button:active::after,
.reroll-button:active::after {
    transform: scale(0, 0);
    opacity: 0.3;
    transition: 0s;
}

.option-text {
    margin-bottom: 1rem;
}

.option-source {
    font-size: 0.8rem;
    color: var(--text-color);
    opacity: 0.7;
    align-self: flex-end;
    font-style: italic;
}

.hotkey-hint {
    font-size: 0.75rem;
    opacity: 0.8;
    font-style: italic;
}

/* Hide hotkey hints on mobile/tablet devices */
@media (hover: none) and (pointer: coarse), (max-width: 768px) {
    .hotkey-hint {
        display: none;
    }
}

.report-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 2rem;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.source-link {
    font-size: 1rem;
    color: var(--secondary-color);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity var(--transition-speed);
}

.source-link:hover {
    opacity: 1;
}