:root {
    --bg-color: #f0f2f5;
    --container-bg: white;
    --text-color: #333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --button-bg: #4CAF50;
    --button-text: white;
    --button-hover: #45a049;
    --button-shadow: rgba(76, 175, 80, 0.4);
    --button-hover-shadow: rgba(76, 175, 80, 0.5);
}

body.dark-mode {
    --bg-color: #18191a;
    --container-bg: #242526;
    --text-color: #e4e6eb;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --button-bg: #4CAF50; /* Keep button color or adjust if needed */
    --button-text: white;
    --button-hover: #45a049;
    --button-shadow: rgba(76, 175, 80, 0.4);
    --button-hover-shadow: rgba(76, 175, 80, 0.5);
}

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

.container {
    text-align: center;
    background-color: var(--container-bg);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-color);
    transition: background-color 0.3s, box-shadow 0.3s;
    position: relative;
}

h1 {
    color: var(--text-color);
    margin-bottom: 30px;
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap; /* Handle smaller screens better */
}

#draw-button {
    background-color: var(--button-bg);
    color: var(--button-text);
    border: none;
    padding: 15px 30px;
    font-size: 1.2em;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px var(--button-shadow);
}

#draw-button:hover {
    background-color: var(--button-hover);
    box-shadow: 0 6px 20px var(--button-hover-shadow);
}

/* Toggle Switch Styles */
.theme-switch-wrapper {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
}

.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: #ccc;
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
}

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}