:root {
    color-scheme: light dark;
    --bg: #f0f0f0;
    --text: #1c1c1c;
    --card: #ffffff;
    --shadow: rgba(0, 0, 0, 0.12);
    --ball: #eeeeee;
    --accent: #4caf50;
    --accent-hover: #45a049;
    --border: rgba(0, 0, 0, 0.12);
}

html[data-theme="dark"] {
    --bg: #14161a;
    --text: #f1f4f8;
    --card: #1f232a;
    --shadow: rgba(0, 0, 0, 0.45);
    --ball: #2b3038;
    --accent: #7fdc8e;
    --accent-hover: #6acb7b;
    --border: rgba(255, 255, 255, 0.12);
}

body {
    font-family: sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg);
    color: var(--text);
    transition: background-color 200ms ease, color 200ms ease;
}

.container {
    text-align: center;
    background-color: var(--card);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 10px 30px var(--shadow);
    min-width: 280px;
    transition: background-color 200ms ease, box-shadow 200ms ease;
}

.controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 0.75rem;
}

.theme-toggle {
    font-size: 0.85rem;
    padding: 0.4rem 0.7rem;
    background-color: transparent;
    border: 1px solid var(--border);
    border-radius: 999px;
    color: var(--text);
    cursor: pointer;
    transition: border-color 200ms ease, color 200ms ease, background-color 200ms ease;
}

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

.lotto-numbers {
    display: flex;
    justify-content: center;
    margin: 1rem 0;
}

.date-info {
    margin: 0.75rem 0 1rem;
    font-size: 0.95rem;
    color: var(--text);
}

.date-row {
    margin: 0.25rem 0;
}

.lotto-numbers span {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    border-radius: 50%;
    background-color: var(--ball);
    margin: 0 0.5rem;
    font-size: 1.2rem;
    color: var(--text);
}

.generate-btn {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
    background-color: var(--accent);
    color: #0b160c;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 200ms ease;
}

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