:root {
    --bg-color-start: #f0f4f8;
    --bg-color-end: #d9e2ec;
    --text-color: #102a43;
    --container-bg: rgba(255, 255, 255, 0.7);
    --number-bg: #ffffff;
    --shadow-color: rgba(16, 42, 67, 0.3);
    --input-bg: #ffffff;
    --input-border: #d9e2ec;
}

body[data-theme="dark"] {
    --bg-color-start: #102a43;
    --bg-color-end: #0a1a29;
    --text-color: #f0f4f8;
    --container-bg: rgba(16, 42, 67, 0.5);
    --number-bg: #243b53;
    --shadow-color: rgba(0, 0, 0, 0.6);
    --input-bg: #102a43;
    --input-border: #334e68;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    background: linear-gradient(135deg, var(--bg-color-start), var(--bg-color-end));
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 20px;
    overflow-y: auto;
    transition: background 0.4s ease, color 0.4s ease;
}

.main-wrapper {
    display: flex;
    flex-direction: column;
    gap: 30px;
    width: 100%;
    max-width: 500px;
    z-index: 1;
}

.container {
    background: var(--container-bg);
    padding: 2.5rem;
    border-radius: 24px;
    box-shadow: 0 20px 40px var(--shadow-color);
    backdrop-filter: blur(12px);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.lotto-numbers {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.lotto-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--number-bg);
    display: grid;
    place-content: center;
    font-weight: bold;
    box-shadow: 0 2px 5px var(--shadow-color);
}

#generate-btn, .submit-btn {
    padding: 12px 30px;
    border-radius: 25px;
    border: none;
    background: #486581;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
    width: 100%;
}

#generate-btn:hover, .submit-btn:hover {
    transform: translateY(-2px);
    background: #334e68;
}

.partnership-container h2 {
    margin-top: 0;
    margin-bottom: 10px;
}

.partnership-form {
    text-align: left;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-size: 0.9rem;
    font-weight: 600;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 12px;
    border-radius: 12px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    box-sizing: border-box;
}

.form-group textarea {
    resize: vertical;
}

/* Theme Toggle is handled in index.html inline for priority */