:root {
    --bg-color: #f0f0f0;
    --container-bg: transparent;
    --text-color: #333;
    --number-bg: #fff;
    --number-shadow: rgba(0,0,0,0.1);
    --btn-bg: #4CAF50;
    --btn-hover: #45a049;
}

[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #f0f0f0;
    --number-bg: #1e1e1e;
    --number-shadow: rgba(255,255,255,0.05);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
    margin: 0;
}

.container {
    text-align: center;
    padding: 2rem;
}

.lotto-row {
    display: flex;
    justify-content: center;
    margin: 15px 0;
    flex-wrap: wrap;
    gap: 10px;
}

.number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--number-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-weight: bold;
    box-shadow: 0 4px 8px var(--number-shadow);
    transition: transform 0.2s, background-color 0.3s;
}

.number:hover {
    transform: scale(1.1);
}

#generate-btn {
    padding: 12px 24px;
    font-size: 18px;
    cursor: pointer;
    border: none;
    background-color: var(--btn-bg);
    color: white;
    border-radius: 8px;
    transition: background-color 0.2s, transform 0.1s;
}

#generate-btn:hover {
    background-color: var(--btn-hover);
}

#generate-btn:active {
    transform: scale(0.98);
}

.theme-switch-wrapper {
    position: absolute;
    top: 20px;
    right: 20px;
}

#theme-toggle {
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--text-color);
    background: transparent;
    color: var(--text-color);
    font-size: 14px;
}