:root {
    --primary-color: #722F37; /* Merlot */
    --secondary-color: #9e4751;
    --background-color: #f4f4f9;
    --card-bg: #ffffff;
    --text-color: #333333;
    --light-text: #777777;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --font-family: 'Inter', sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 40px;
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    color: var(--primary-color);
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

p.subtitle {
    color: var(--light-text);
    font-size: 1.1rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

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

label {
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-color);
}

input[type="text"],
input[type="number"] {
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input[type="text"]:focus,
input[type="number"]:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-actions {
    margin-top: 30px;
    text-align: center;
}

.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 15px 40px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: scale(1.05);
}

.result-container {
    text-align: center;
}

.result-badge {
    display: inline-block;
    padding: 20px 40px;
    background-color: #e8f5e9;
    color: #2e7d32;
    border-radius: 50px;
    font-size: 2rem;
    font-weight: bold;
    margin: 30px 0;
    border: 2px solid #c8e6c9;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        padding: 10px;
    }
    
    .card {
        padding: 20px;
    }

    h1 {
        font-size: 2rem;
    }
}