:root {
    --background-color: #f4f4f8;
    --primary-color: #0b7a3b;
    --text-color: #121212;
    --number-bg-color: #ffffff;
    --border-color: rgba(0, 0, 0, 0.08);
    --toggle-bg: #ffffff;
    --ball-text-color: #111111;
    --ball-border-color: rgba(0, 0, 0, 0.08);
}

html[data-theme="dark"] {
    --background-color: #121212;
    --primary-color: #1DB954;
    --text-color: #FFFFFF;
    --number-bg-color: #2f2f2f;
    --border-color: rgba(255, 255, 255, 0.12);
    --toggle-bg: #1f1f1f;
    --ball-text-color: #f5f5f5;
    --ball-border-color: rgba(255, 255, 255, 0.18);
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
}

.header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

h1 {
    margin: 0;
}

#generate-btn {
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 10px var(--primary-color), 0 0 20px var(--primary-color);
}

#generate-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 0 15px var(--primary-color), 0 0 30px var(--primary-color);
}

#theme-toggle {
    background-color: var(--toggle-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

#theme-toggle:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px var(--border-color);
}

.partner-form {
    margin-top: 2.5rem;
    padding: 1.5rem;
    border-radius: 16px;
    background: var(--number-bg-color);
    border: 1px solid var(--border-color);
    display: grid;
    gap: 0.75rem;
    max-width: 420px;
    width: 100%;
}

.partner-form h2 {
    margin: 0 0 0.5rem;
    font-size: 1.2rem;
}

.partner-form label {
    text-align: left;
    display: grid;
    gap: 0.35rem;
    font-size: 0.9rem;
}

.partner-form input,
.partner-form textarea {
    padding: 0.6rem 0.8rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    font-size: 0.95rem;
}

.partner-form input:focus,
.partner-form textarea:focus {
    outline: 2px solid var(--primary-color);
    border-color: transparent;
}

.submit-btn {
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    padding: 0.75rem 1.2rem;
    border-radius: 999px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px var(--border-color);
}

lotto-display {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}