:root {
    color-scheme: light dark;
    --bg: #f0f2f5;
    --panel: #ffffff;
    --text: #333333;
    --muted: #6b7280;
    --shadow: rgba(0, 0, 0, 0.1);
    --button: #4caf50;
    --button-hover: #45a049;
    --border: #e5e7eb;
}

html[data-theme="dark"] {
    --bg: #0f172a;
    --panel: #0b1220;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --shadow: rgba(0, 0, 0, 0.5);
    --button: #22c55e;
    --button-hover: #16a34a;
    --border: #1f2937;
}

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

.container {
    background-color: var(--panel);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px var(--shadow);
    text-align: center;
    border: 1px solid var(--border);
    min-width: 320px;
}

h1 {
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    letter-spacing: 0.2px;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

#lotto-numbers-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 1.5rem;
}

#generate-button {
    background-color: var(--button);
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.contact-form {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: left;
}

.contact-form h2 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
}

.contact-form label {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 0.75rem;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    margin-top: 0.35rem;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background-color: transparent;
    color: var(--text);
    font-size: 0.95rem;
    box-sizing: border-box;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--button);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
}

.form-submit {
    width: 100%;
    margin-top: 0.5rem;
    background-color: var(--button);
    color: white;
    border: none;
    padding: 10px 14px;
    font-size: 0.95rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.form-submit:hover {
    background-color: var(--button-hover);
}

.form-note {
    margin: 0.75rem 0 0 0;
    font-size: 0.8rem;
    color: var(--muted);
    text-align: center;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

#theme-toggle {
    background-color: transparent;
    color: var(--text);
    border: 1px solid var(--border);
    padding: 8px 12px;
    font-size: 0.9rem;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

#theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.06);
}

html[data-theme="dark"] #theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.08);
}

lotto-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    font-weight: bold;
    color: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}