:root {
    --bg-color: #121212;
    --text-color: #ffffff;
    --nav-bg: #1e1e1e;
    --container-bg: transparent;
    --btn-bg: #4CAF50;
    --btn-hover: #45a049;
    --toggle-btn-bg: #333333;
    --toggle-btn-text: #ffffff;
    --card-bg: #1e1e1e;
    --input-bg: #2a2a2a;
    --input-border: #444444;
}

body.light-mode {
    --bg-color: #f5f5f5;
    --text-color: #333333;
    --nav-bg: #ffffff;
    --toggle-btn-bg: #dddddd;
    --toggle-btn-text: #333333;
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --input-border: #cccccc;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
    height: 60px;
    background-color: var(--nav-bg);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--btn-bg);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a.active {
    color: var(--btn-bg);
    border-bottom: 2px solid var(--btn-bg);
}

/* App Sections */
.app-section {
    display: none;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.app-section.active {
    display: block;
}

/* Lotto Section */
.container {
    text-align: center;
    margin-top: 4rem;
}

.lotto-numbers-container {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 20px;
    min-height: 60px;
}

/* Profile Builder Layout */
.profile-builder-container {
    display: flex;
    gap: 4rem;
    align-items: flex-start;
}

.profile-form {
    flex: 1;
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.profile-preview {
    flex: 1;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: bold;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 10px;
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    color: var(--text-color);
    box-sizing: border-box;
}

/* Buttons */
#generate-btn, #theme-toggle {
    cursor: pointer;
    border: none;
    border-radius: 8px;
    transition: background-color 0.3s ease;
}

#generate-btn {
    background-color: var(--btn-bg);
    color: white;
    padding: 15px 32px;
    font-size: 16px;
    margin-top: 20px;
}

#theme-toggle {
    background-color: var(--toggle-btn-bg);
    color: var(--toggle-btn-text);
    padding: 8px 16px;
    font-weight: bold;
}

@media (max-width: 900px) {
    .profile-builder-container {
        flex-direction: column;
    }
}