// Reusable skeleton components for loading states

export function SkeletonCard() {
  return (
    <div className="bg-white rounded-xl border border-border p-5 animate-pulse">
      <div className="h-4 bg-surface-tertiary rounded w-3/4 mb-3"></div>
      <div className="h-3 bg-surface-tertiary rounded w-1/2 mb-2"></div>
      <div className="h-3 bg-surface-tertiary rounded w-2/3"></div>
    </div>
  )
}

export function SkeletonStatCard() {
  return (
    <div className="bg-white rounded-xl border border-border p-5 animate-pulse">
      <div className="flex items-start justify-between mb-4">
        <div className="w-10 h-10 bg-surface-tertiary rounded-lg"></div>
        <div className="h-3 bg-surface-tertiary rounded w-16"></div>
      </div>
      <div className="h-8 bg-surface-tertiary rounded w-20 mb-2"></div>
      <div className="h-3 bg-surface-tertiary rounded w-24"></div>
    </div>
  )
}

export function SkeletonTable({ rows = 5, cols = 6 }) {
  return (
    <div className="bg-white rounded-xl border border-border overflow-hidden animate-pulse">
      <div className="border-b border-border bg-surface-secondary p-4">
        <div className="flex gap-4">
          {[...Array(cols)].map((_, i) => (
            <div key={i} className="h-3 bg-surface-tertiary rounded w-20"></div>
          ))}
        </div>
      </div>
      <div className="divide-y divide-border-light">
        {[...Array(rows)].map((_, i) => (
          <div key={i} className="p-4">
            <div className="flex gap-4">
              {[...Array(cols)].map((_, j) => (
                <div key={j} className="h-4 bg-surface-tertiary rounded flex-1"></div>
              ))}
            </div>
          </div>
        ))}
      </div>
    </div>
  )
}

export function SkeletonKanbanBoard() {
  return (
    <div className="grid grid-cols-1 md:grid-cols-3 lg:grid-cols-5 gap-4">
      {[...Array(5)].map((_, colIdx) => (
        <div key={colIdx} className="animate-pulse">
          <div className="flex items-center gap-2 mb-3">
            <div className="w-2.5 h-2.5 bg-surface-tertiary rounded-full"></div>
            <div className="h-4 bg-surface-tertiary rounded w-24"></div>
            <div className="h-5 bg-surface-tertiary rounded-full w-8"></div>
          </div>
          <div className="bg-surface-secondary rounded-xl p-2 space-y-2 min-h-[400px]">
            {[...Array(3)].map((_, cardIdx) => (
              <div key={cardIdx} className="bg-white rounded-lg border border-border p-3">
                <div className="h-4 bg-surface-tertiary rounded w-full mb-2"></div>
                <div className="h-3 bg-surface-tertiary rounded w-3/4 mb-3"></div>
                <div className="flex gap-2">
                  <div className="h-5 bg-surface-tertiary rounded w-16"></div>
                  <div className="h-5 bg-surface-tertiary rounded w-20"></div>
                </div>
              </div>
            ))}
          </div>
        </div>
      ))}
    </div>
  )
}

export function SkeletonCalendar() {
  return (
    <div className="bg-white rounded-xl border border-border overflow-hidden animate-pulse">
      <div className="flex items-center justify-between px-6 py-4 border-b border-border">
        <div className="h-6 bg-surface-tertiary rounded w-40"></div>
        <div className="h-8 bg-surface-tertiary rounded w-20"></div>
      </div>
      <div className="grid grid-cols-7 border-b border-border bg-surface-secondary">
        {[...Array(7)].map((_, i) => (
          <div key={i} className="text-center py-3">
            <div className="h-3 bg-surface-tertiary rounded w-8 mx-auto"></div>
          </div>
        ))}
      </div>
      <div className="grid grid-cols-7">
        {[...Array(35)].map((_, i) => (
          <div key={i} className="border-r border-b border-border min-h-[100px] p-2">
            <div className="h-5 w-5 bg-surface-tertiary rounded-full mb-2"></div>
            <div className="space-y-1">
              <div className="h-3 bg-surface-tertiary rounded w-full"></div>
              {i % 3 === 0 && <div className="h-3 bg-surface-tertiary rounded w-3/4"></div>}
            </div>
          </div>
        ))}
      </div>
    </div>
  )
}

export function SkeletonAssetGrid({ count = 10 }) {
  return (
    <div className="grid grid-cols-2 md:grid-cols-4 lg:grid-cols-5 gap-4">
      {[...Array(count)].map((_, i) => (
        <div key={i} className="animate-pulse">
          <div className="aspect-square bg-surface-tertiary rounded-xl"></div>
          <div className="mt-2 h-3 bg-surface-tertiary rounded w-3/4"></div>
          <div className="mt-1 h-3 bg-surface-tertiary rounded w-1/2"></div>
        </div>
      ))}
    </div>
  )
}

export function SkeletonDashboard() {
  return (
    <div className="space-y-6">
      {/* Header */}
      <div className="animate-pulse">
        <div className="h-8 w-64 bg-surface-tertiary rounded-lg mb-2"></div>
        <div className="h-4 w-48 bg-surface-tertiary rounded"></div>
      </div>

      {/* Stat cards */}
      <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4">
        {[...Array(4)].map((_, i) => (
          <SkeletonStatCard key={i} />
        ))}
      </div>

      {/* Content cards */}
      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
        {[...Array(2)].map((_, i) => (
          <div key={i} className="bg-white rounded-xl border border-border animate-pulse">
            <div className="px-5 py-4 border-b border-border">
              <div className="h-5 bg-surface-tertiary rounded w-32"></div>
            </div>
            <div className="divide-y divide-border-light">
              {[...Array(5)].map((_, j) => (
                <div key={j} className="px-5 py-3 flex gap-3">
                  <div className="flex-1 space-y-2">
                    <div className="h-4 bg-surface-tertiary rounded w-2/3"></div>
                    <div className="h-3 bg-surface-tertiary rounded w-1/2"></div>
                  </div>
                  <div className="h-6 bg-surface-tertiary rounded w-16"></div>
                </div>
              ))}
            </div>
          </div>
        ))}
      </div>
    </div>
  )
}
