:root {
    --background-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #007bff;
    --primary-hover-color: #0056b3;
    --text-color: #e0e0e0;
    --text-muted-color: #8e8e8e;
    --border-color: #333;
    --success-color: #28a745;
    --error-color: #dc3545;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 40px 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.form-container {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 3400px; /* Was 700px */
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.form-header {
    text-align: center;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

.form-header h1 {
    margin: 0 0 10px 0;
    font-size: 2rem;
}

.form-header p {
    margin: 0;
    color: var(--text-muted-color);
}

.form-section {
    margin-bottom: 30px;
}

.form-section h3 {
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 12px;
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.25);
}

textarea {
    resize: vertical;
    min-height: 80px;
}

button[type="submit"] {
    width: 100%;
    padding: 15px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.3s;
}

button[type="submit"]:hover:not(:disabled) {
    background-color: var(--primary-hover-color);
}

button[type="submit"]:disabled {
    background-color: #555;
    cursor: not-allowed;
}

#form-message {
    text-align: center;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
    font-weight: 500;
    display: none;
}

#form-message.success {
    background-color: var(--success-color);
    color: white;
    display: block;
}

#form-message.error {
    background-color: var(--error-color);
    color: white;
    display: block;
}

#thank-you-container {
    text-align: center;
}

.thank-you-content .success-icon {
    font-size: 5rem;
    color: var(--success-color);
    width: 100px;
    height: 100px;
    line-height: 100px;
    border-radius: 50%;
    border: 3px solid var(--success-color);
    margin: 0 auto 30px auto;
}

.thank-you-content h2 {
    font-size: 2.2rem;
    margin-bottom: 15px;
}

.thank-you-content p {
    color: var(--text-muted-color);
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: 30px;
}

.home-button {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background-color 0.3s;
}

.home-button:hover {
    background-color: var(--primary-hover-color);
}

.main-container {
    width: 100%;
    max-width: 700px;
}