:root {
    --bg-color: #f0f2f5;
    --container-bg: linear-gradient(135deg, #ece9e6, #ffffff);
    --text-color: #333;
    --border-color: #ddd;
    --button-bg: #007bff;
    --button-hover-bg: #0056b3;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --container-bg: linear-gradient(135deg, #2d2d2d, #1a1a1a);
    --text-color: #f0f2f5;
    --border-color: #444;
    --button-bg: #0d6efd;
    --button-hover-bg: #0b5ed7;
    --shadow-color: rgba(255, 255, 255, 0.1);
}

body {
    font-family: 'Helvetica Neue', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    text-align: center;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow-color);
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    position: relative;
}

#theme-toggle {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 8px 12px;
    font-size: 0.9em;
    color: white;
    background-color: var(--button-bg);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

#theme-toggle:hover {
    background-color: var(--button-hover-bg);
}

h1 {
    margin-bottom: 30px;
    font-size: 2.5em;
    color: var(--text-color);
    text-shadow: 1px 1px 2px var(--shadow-color);
}

.numbers-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.number {
    width: 60px;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8em;
    font-weight: bold;
    color: white;
    border-radius: 50%;
    background-color: #4CAF50;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, background-color 0.3s ease;
}


#generate-btn {
    padding: 15px 30px;
    font-size: 1.2em;
    color: white;
    background-color: var(--button-bg);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

#generate-btn:hover {
    background-color: var(--button-hover-bg);
    transform: translateY(-2px);
}

#generate-btn:active {
    transform: translateY(1px);
}

/* Formspree Form Styles */
.form-container {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    box-shadow: 0 10px 20px var(--shadow-color);
    padding: 40px;
    margin-top: 40px;
    width: 100%;
    max-width: 500px;
    text-align: left;
}

.form-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: var(--text-color);
    font-size: 2em;
}

.form-container form {
    display: flex;
    flex-direction: column;
}

.form-container label {
    margin-bottom: 8px;
    font-weight: bold;
    color: var(--text-color);
}

.form-container input[type="text"],
.form-container input[type="email"],
.form-container textarea {
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1em;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: border-color 0.3s ease;
}

.form-container input[type="text"]:focus,
.form-container input[type="email"]:focus,
.form-container textarea:focus {
    border-color: var(--button-bg);
    outline: none;
}

.form-container textarea {
    resize: vertical;
    min-height: 100px;
}

.form-container button[type="submit"] {
    padding: 15px 25px;
    font-size: 1.1em;
    color: white;
    background-color: var(--button-bg);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    margin-top: 10px;
}

.form-container button[type="submit"]:hover {
    background-color: var(--button-hover-bg);
    transform: translateY(-2px);
}

.form-container button[type="submit"]:active {
    transform: translateY(1px);
}