:root {
    --background-color-light: #f0f0f0;
    --text-color-light: #333;
    --button-bg-light: #4CAF50;
    --button-text-light: white;
    --header-bg-light: #fff;
    --shadow-light: 0 2px 4px rgba(0,0,0,0.1);

    --background-color-dark: #333;
    --text-color-dark: #f0f0f0;
    --button-bg-dark: #5cb85c;
    --button-text-dark: #333;
    --header-bg-dark: #222;
    --shadow-dark: 0 2px 4px rgba(0,0,0,0.4);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
}

body.light-mode {
    background-color: var(--background-color-light);
    color: var(--text-color-light);
}

body.dark-mode {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-light);
    background-color: var(--header-bg-light);
    transition: background-color 0.3s;
}

body.dark-mode header {
    background-color: var(--header-bg-dark);
    box-shadow: var(--shadow-dark);
}

h1 {
    margin: 0;
    font-size: 1.5rem;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
    padding: 0 1rem 4rem;
    max-width: 800px;
    margin: 0 auto;
}

.lotto-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    width: 100%;
}

.divider {
    width: 100%;
    border: none;
    border-top: 1px solid #ddd;
    margin: 2rem 0;
}

body.dark-mode .divider {
    border-color: #444;
}

.inquiry-section {
    width: 100%;
    max-width: 500px;
    background-color: var(--header-bg-light);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

body.dark-mode .inquiry-section {
    background-color: var(--header-bg-dark);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.inquiry-section h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    text-align: center;
}

.inquiry-section p {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 0.95rem;
    opacity: 0.8;
}

#inquiry-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input, .form-group textarea {
    padding: 0.8rem 1rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    background-color: #fafafa;
    transition: border-color 0.2s, box-shadow 0.2s;
}

body.dark-mode .form-group input, body.dark-mode .form-group textarea {
    background-color: #2a2a2a;
    border-color: #444;
    color: white;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--button-bg-light);
    box-shadow: 0 0 0 2px rgba(76, 175, 80, 0.2);
}

.submit-btn {
    padding: 1rem;
    background-color: var(--button-bg-light);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.submit-btn:hover {
    filter: brightness(1.1);
}

.submit-btn:active {
    transform: scale(0.98);
}

#generator-btn, #theme-switcher {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s, transform 0.2s;
}

#generator-btn {
    background-color: var(--button-bg-light);
    color: var(--button-text-light);
}

body.dark-mode #generator-btn {
    background-color: var(--button-bg-dark);
    color: var(--button-text-dark);
}

#theme-switcher {
    background-color: transparent;
    border: 1px solid var(--text-color-light);
    color: var(--text-color-light);
}

body.dark-mode #theme-switcher {
    border-color: var(--text-color-dark);
    color: var(--text-color-dark);
}

#generator-btn:hover {
    transform: translateY(-2px);
}

#numbers-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
}

.lotto-set {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
}

.lotto-number {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--header-bg-light);
    border-radius: 50%;
    font-weight: bold;
    box-shadow: var(--shadow-light);
}

body.dark-mode .lotto-number {
    background-color: #444;
    box-shadow: var(--shadow-dark);
}