:root {
    --azul-principal: #0d3b66;
    --azul-oscuro: #092c4a;
    --naranja-acento: #f4a261;
    --naranja-hover: #e76f51;
    --fondo-claro: #f8f9fa;
    --texto-color: #333333;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--fondo-claro);
    color: var(--texto-color);
    margin: 0;
    padding: 0;
}

.header-tienda {
    background-color: var(--azul-principal);
    color: white;
    text-align: center;
    padding: 20px;
}

.header-tienda h1 {
    margin: 0;
    font-size: 24px;
    letter-spacing: 1px;
}

.header-tienda p {
    margin: 5px 0 0 0;
    font-size: 14px;
    color: var(--naranja-acento);
}

.checkout-container {
    max-width: 650px;
    margin: 30px auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

/* Stepper */
.stepper {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    border-bottom: 2px solid #e9ecef;
    padding-bottom: 12px;
    font-size: 13px;
}

.step {
    color: #adb5bd;
    font-weight: bold;
}

.step.active {
    color: var(--azul-principal);
    border-bottom: 2px solid var(--naranja-acento);
    padding-bottom: 10px;
}

.checkout-section {
    display: none;
}

.checkout-section.active {
    display: block;
}

/* Formularios y Inputs */
label {
    display: block;
    margin-bottom: 12px;
    font-weight: 600;
    font-size: 14px;
}

input[type="text"], input[type="tel"], input[type="email"], input[type="number"], select, textarea {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #ced4da;
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 14px;
}

textarea { resize: vertical; height: 60px; }

.fila-inputs {
    display: flex;
    gap: 15px;
}

.fila-inputs label {
    flex: 1;
}

/* Botones */
button {
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    font-size: 14px;
    border: none;
    transition: background 0.2s;
}

.btn-siguiente {
    background-color: var(--naranja-acento);
    color: white;
    float: right;
    margin-top: 20px;
}

.btn-siguiente:hover:not(:disabled) {
    background-color: var(--naranja-hover);
}

.btn-siguiente:disabled {
    background-color: #cccccc;
    cursor: not-allowed;
}

.btn-anterior {
    background-color: #e9ecef;
    color: #495057;
    margin-top: 20px;
}

.opciones-pago label {
    padding: 10px;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    margin-bottom: 10px;
    cursor: pointer;
}