:root {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --text-main: #333333;
    --text-muted: #777777;
    --border-color: #e0e0e0;
    --accent-color: #b2d8b2; /* Verde Pastel */
    --accent-dark: #9bc49b;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.form-container {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.05);
    width: 100%;
    max-width: 400px;
}

.form-header h2 {
    margin: 0 0 0.5rem 0;
    color: var(--text-main);
    font-size: 1.5rem;
}

.form-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

input, textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--accent-color);
}

button {
    width: 100%;
    padding: 1rem;
    background-color: var(--accent-color);
    border: none;
    border-radius: 8px;
    color: #4a5d4a;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background-color: var(--accent-dark);
}

.hidden { display: none; }

#response-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.9rem;
}