:root {
    --bg-color: #f8f9fa;
    --card-bg: #ffffff;
    --accent-gold: #dfc15d; /* Dorado refinado del botón Ver Productos */
    --accent-gold-hover: #cbae4b;
    --text-dark: #1a2530; /* Azul oscuro corporativo de tu marca */
    --text-muted: #6c757d;
    --border-color: #e2e8f0;
}

*, *::before, *::after {
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #fdfbf7 0%, #f5f7fa 100%);
    color: var(--text-dark);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
}

.calculator-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 35px;
    width: 100%;
    max-width: 520px;
    box-shadow: 0 10px 30px rgba(26, 37, 48, 0.05);
}

h2 {
    color: var(--text-dark);
    margin-top: 0;
    margin-bottom: 5px;
    font-size: 26px;
    text-align: center;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.brand-subtitle {
    text-align: center;
    color: var(--accent-gold);
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 25px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.form-group {
    margin-bottom: 18px;
}

label {
    display: block;
    margin-bottom: 7px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-dark);
}

input, select {
    width: 100%;
    padding: 11px 14px;
    background-color: #ffffff;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(223, 193, 93, 0.15);
}

.row {
    display: flex;
    gap: 15px;
}

.row .form-group {
    flex: 1;
}

button {
    width: 100%;
    padding: 13px;
    background-color: var(--accent-gold);
    border: none;
    border-radius: 25px; /* Botón tipo cápsula */
    color: #ffffff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color 0.3s, transform 0.1s;
}

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

button:active {
    transform: scale(0.99);
}

.results {
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
    display: none;
}

.results h3 {
    margin-top: 0;
    font-size: 17px;
    color: var(--text-dark);
    margin-bottom: 15px;
    font-weight: 600;
}

.result-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--text-muted);
}

.result-item span:last-child {
    font-weight: 600;
    color: var(--text-dark);
}

.total-cost {
    font-size: 16px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed var(--border-color);
}

.total-cost span:last-child {
    color: var(--text-dark) !important;
    font-size: 22px;
    font-weight: 700;
}