/* =====================================================
   Client Management System - Core Styling & Theme
   ===================================================== */

:root {
  --background: #f8fafc;
  --foreground: #0f172a;
  --card: #ffffff;
  --card-foreground: #0f172a;
  --popover: #ffffff;
  --popover-foreground: #0f172a;
  --primary: #0f172a;
  --primary-foreground: #ffffff;
  --secondary: #f1f5f9;
  --secondary-foreground: #0f172a;
  --muted: #f1f5f9;
  --muted-foreground: #64748b;
  --accent: #f1f5f9;
  --accent-foreground: #0f172a;
  --destructive: #ef4444;
  --destructive-foreground: #ffffff;
  --border: #e2e8f0;
  --input: #e2e8f0;
  --ring: #94a3b8;
  --radius: 0.5rem;
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* Animations */
.animate-in {
  animation: fadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Transitions */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.15s ease;
}
.fade-enter-from,
.fade-leave-to {
  opacity: 0;
}

/* Modal backdrop & dialog transition */
.modal-backdrop {
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(2px);
}

/* Helper Utilities */
.currency {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

.spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid #e2e8f0;
  border-top-color: #0f172a;
  border-radius: 9999px;
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== Kanban Board Drag & Drop ===== */
.kanban-ghost {
  background-color: rgba(226, 232, 240, 0.6) !important;
  border: 2px dashed #94a3b8 !important;
  border-radius: 0.75rem !important;
  opacity: 0.5 !important;
  box-shadow: none !important;
}
.kanban-ghost > * {
  opacity: 0 !important;
}
.kanban-chosen {
  cursor: grabbing !important;
  transform: scale(1.03) rotate(1deg);
  box-shadow: 0 12px 28px -5px rgba(0, 0, 0, 0.18), 0 8px 10px -6px rgba(0, 0, 0, 0.08) !important;
  z-index: 50;
}
.kanban-drag {
  opacity: 0.95 !important;
  cursor: grabbing !important;
}