variable "region" {
  type    = string
  default = "us-east-1"
}

variable "vpc_cidr" {
  description = "Prod VPC CIDR (multi-AZ)"
  type        = string
  default     = "10.4.0.0/16"
}

variable "image_tag" {
  description = "Container image tag to deploy (immutable; never 'latest' in prod)"
  type        = string
}

variable "alb_certificate_arn" {
  description = "ACM certificate ARN for the ALB. Prod should always have one."
  type        = string
  default     = ""
}

variable "autoscale_min" {
  type    = number
  default = 1
}

variable "autoscale_max" {
  type    = number
  default = 4
}

variable "public_domain" {
  description = "Custom domain fronting the ALB (added to ALLOWED_HOSTS)"
  type        = string
  default     = ""
}

variable "alert_emails" {
  description = "Email addresses that receive CloudWatch alarm notifications via SNS (each must confirm the subscription once)"
  type        = list(string)
  default     = []
}