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

body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f2f5;
    font-family: 'Segoe UI', sans-serif;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
}

h1 {
    font-size: 1.5rem;
    color: #1a1a2e;
    margin-bottom: 6px;
}

.subtitulo {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 28px;
}

.inputs {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.campo {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #444;
}

input {
    padding: 10px 14px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
    outline: none;
}

input:focus {
    border-color: #4f46e5;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #4f46e5;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

button:hover {
    background-color: #4338ca;
}

.resultados {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.resultado-item {
    background: #f8f7ff;
    border-radius: 10px;
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.label {
    color: #666;
    font-size: 0.9rem;
}

.valor {
    font-size: 1.4rem;
    font-weight: 700;
    color: #4f46e5;
}

.unidad {
    color: #999;
    font-size: 0.85rem;
    min-width: 24px;
    text-align: right;
}

.error {
    margin-top: 16px;
    background: #fff0f0;
    color: #cc0000;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 0.9rem;
}

.oculto {
    display: none;
}