:root {
    --background-color: #1a1a1a;
    --card-background: #2b2b2b;
    --primary-text-color: #ffffff;
    --secondary-text-color: #b3b3b3;
    --accent-color: #ff4d4d;
    --glow-color: rgba(255, 77, 77, 0.7);
    --shadow-color: rgba(0, 0, 0, 0.35);
    --pattern-color: rgba(255, 255, 255, 0.02);
    --number-bg: #333;

    --font-main: 'Helvetica Neue', sans-serif;
    --font-display: 'Arial Black', sans-serif;
}

html[data-theme="light"] {
    --background-color: #fbf7ef;
    --card-background: #fff6e4;
    --primary-text-color: #1b1b1b;
    --secondary-text-color: #5a5143;
    --accent-color: #d6402f;
    --glow-color: rgba(214, 64, 47, 0.35);
    --shadow-color: rgba(40, 32, 20, 0.15);
    --pattern-color: rgba(66, 54, 36, 0.08);
    --number-bg: #1a1a1a;
}

body {
    background-color: var(--background-color);
    color: var(--primary-text-color);
    font-family: var(--font-main);
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-image: radial-gradient(circle, var(--pattern-color) 1px, transparent 1px);
    background-size: 20px 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    text-align: center;
}

.hero-top {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    position: relative;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 3.5rem;
    color: var(--primary-text-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: baseline;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}

.title-badge {
    height: 1.05em;
    vertical-align: baseline;
    margin: 0 2px;
}

.title-paren {
    font-size: 0.9em;
    color: var(--primary-text-color);
}

.theme-toggle {
    background-color: var(--card-background);
    color: var(--primary-text-color);
    border: 2px solid var(--primary-text-color);
    border-radius: 999px;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s, border-color 0.3s, transform 0.3s;
    box-shadow: 0 6px 16px var(--shadow-color);
    position: absolute;
    right: 0;
    top: 0;
    transform: translateY(6px);
}

.theme-toggle:hover {
    background-color: var(--primary-text-color);
    color: var(--background-color);
}

.hero p {
    font-size: 1.2rem;
    color: var(--secondary-text-color);
    margin-bottom: 3rem;
}

.generator-section {
    margin-bottom: 3rem;
}

.numbers-display {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 2rem;
}

.number-placeholder, .number-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-family: var(--font-display);
    font-size: 2rem;
}

.number-placeholder {
    background-color: var(--card-background);
    box-shadow: 0 4px 10px var(--shadow-color);
}

.number-circle {
    background-color: var(--number-bg);
    color: #ffffff;
    font-weight: bold;
    box-shadow: 0 8px 20px var(--shadow-color);
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.number-circle.generated {
    animation: pop-in 0.5s ease-out forwards;
}

@keyframes pop-in {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.generate-button {
    background-color: var(--accent-color);
    color: white;
    font-family: var(--font-main);
    font-size: 1.2rem;
    font-weight: bold;
    border: none;
    border-radius: 50px;
    padding: 15px 40px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 5px 15px var(--shadow-color);
}

.generate-button:hover {
    background-color: #ff6666;
    box-shadow: 0 0 20px var(--glow-color), 0 0 30px var(--glow-color);
}

.analysis-section {
    background-color: var(--card-background);
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.analysis-section h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-text-color);
}

.analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.analysis-card {
    background-color: var(--background-color);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 10px var(--shadow-color);
}

.analysis-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.analysis-card p {
    font-size: 1rem;
    color: var(--secondary-text-color);
    line-height: 1.5;
}

/* Responsive Design */
@media (max-width: 600px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-top {
        justify-content: center;
    }

    .theme-toggle {
        position: static;
        transform: none;
        margin-top: 8px;
    }

    .numbers-display {
        flex-wrap: wrap;
        gap: 10px;
    }

    .number-placeholder, .number-circle {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }

    .analysis-grid {
        grid-template-columns: 1fr;
    }
}