@tailwind base;
@tailwind components;
@tailwind utilities;

@layer base {
  :root {
    color-scheme: light;
    --surface: 244 245 247;
    --surface-raised: 255 255 255;
    --surface-overlay: 236 240 245;
    --surface-muted: 221 225 230;
    --border: 210 218 228;
    --border-strong: 180 192 208;
    --foreground: 12 18 28;
    --foreground-muted: 38 48 62;
    --foreground-faint: 62 72 88;
    --shadow-panel: 0 1px 3px rgba(15, 40, 80, 0.06), 0 4px 12px rgba(36, 150, 237, 0.06);
    --shadow-docker: 0 0 0 1px rgba(36, 150, 237, 0.12), 0 4px 14px rgba(36, 150, 237, 0.1);
    --topo-canvas: linear-gradient(145deg, #dbeafe 0%, #e0f2fe 35%, #ede9fe 70%, #ecfdf5 100%);
    --topo-grid: rgba(37, 99, 235, 0.06);
    --topo-stage-border: rgba(37, 99, 235, 0.15);
    --topo-node-bg: linear-gradient(145deg, #1e40af 0%, #2563eb 50%, #1d4ed8 100%);
    --topo-node-border: rgba(147, 197, 253, 0.45);
    --topo-node-shadow: 0 4px 14px rgba(30, 64, 175, 0.35);
    --topo-header-bg: linear-gradient(90deg, rgba(36, 150, 237, 0.12), rgba(99, 102, 241, 0.08));
  }

  .dark {
    color-scheme: dark;
    --surface: 15 27 46;
    --surface-raised: 22 38 62;
    --surface-overlay: 28 48 78;
    --surface-muted: 36 58 92;
    --border: 48 74 112;
    --border-strong: 64 96 140;
    --foreground: 255 255 255;
    --foreground-muted: 228 234 244;
    --foreground-faint: 195 205 220;
    --shadow-panel: 0 1px 0 rgba(147, 197, 253, 0.06) inset, 0 8px 24px rgba(0, 0, 0, 0.35);
    --shadow-docker: 0 0 0 1px rgba(56, 189, 248, 0.2), 0 4px 16px rgba(14, 116, 214, 0.25);
    --topo-canvas: linear-gradient(145deg, #0c1929 0%, #132f4c 40%, #1a365d 75%, #0f2847 100%);
    --topo-grid: rgba(56, 189, 248, 0.07);
    --topo-stage-border: rgba(56, 189, 248, 0.18);
    --topo-node-bg: linear-gradient(145deg, #1e3a5f 0%, #234876 45%, #1a4470 100%);
    --topo-node-border: rgba(96, 165, 250, 0.4);
    --topo-node-shadow: 0 4px 16px rgba(0, 20, 60, 0.45);
    --topo-header-bg: linear-gradient(90deg, rgba(36, 150, 237, 0.18), rgba(99, 102, 241, 0.12));
  }

  html, body, #root {
    height: 100%;
    scrollbar-gutter: stable;
  }

  body {
    @apply bg-surface font-sans text-foreground antialiased;
    background-image: var(--body-gradient, none);
  }

  .dark body {
    --body-gradient: radial-gradient(ellipse 120% 80% at 50% -20%, rgba(37, 99, 235, 0.15), transparent);
  }

  :root body {
    --body-gradient: radial-gradient(ellipse 100% 60% at 50% -10%, rgba(36, 150, 237, 0.08), transparent);
  }
}

@layer components {
  .panel {
    @apply rounded-lg border border-border bg-surface-raised shadow-panel;
  }

  .topo-canvas {
    @apply relative min-h-0 flex-1 overflow-hidden rounded-lg;
    background:
      linear-gradient(var(--topo-grid) 1px, transparent 1px),
      linear-gradient(90deg, var(--topo-grid) 1px, transparent 1px),
      var(--topo-canvas);
    background-size: 20px 20px, 20px 20px, auto;
  }

  .topo-edge-glow {
    stroke: rgba(56, 189, 248, 0.18);
    stroke-width: 4;
    fill: none;
  }

  .topo-edge-idle {
    stroke: rgba(100, 140, 180, 0.35);
    stroke-width: 1.5;
    stroke-dasharray: 4 8;
    fill: none;
  }

  .topo-edge-live {
    stroke-width: 2;
    stroke-dasharray: 8 12;
    fill: none;
    animation: flow-dash 1.2s linear infinite;
  }

  .topo-edge-orchestration.topo-edge-live { stroke: #f59e0b; filter: drop-shadow(0 0 3px rgba(245, 158, 11, 0.5)); }
  .topo-edge-cdc.topo-edge-live { stroke: #22d3ee; filter: drop-shadow(0 0 3px rgba(34, 211, 238, 0.45)); }
  .topo-edge-stream.topo-edge-live { stroke: #38bdf8; filter: drop-shadow(0 0 3px rgba(56, 189, 248, 0.45)); }
  .topo-edge-etl.topo-edge-live { stroke: #a78bfa; filter: drop-shadow(0 0 3px rgba(167, 139, 250, 0.45)); }
  .topo-edge-query.topo-edge-live { stroke: #818cf8; filter: drop-shadow(0 0 3px rgba(129, 140, 248, 0.45)); }
  .topo-edge-serve.topo-edge-live { stroke: #34d399; filter: drop-shadow(0 0 3px rgba(52, 211, 153, 0.45)); }

  /* Whole-flow pulse triggered by a data-generation run */
  .topo-pulsing .topo-edge-live {
    stroke-width: 3;
    animation: flow-dash 0.6s linear infinite;
  }
  .topo-pulsing .topo-edge-glow {
    stroke: rgba(124, 231, 135, 0.35);
    stroke-width: 6;
    animation: topo-pulse-glow 1.4s ease-in-out infinite;
  }
  @keyframes topo-pulse-glow {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
  }

  .topo-edge-active {
    stroke: url(#topo-flow-gradient);
    stroke-width: 2.5;
    stroke-dasharray: 10 14;
    fill: none;
    animation: flow-dash 1.4s linear infinite;
  }

  .topo-edge-pulse {
    stroke: #34d399;
    stroke-width: 2;
    stroke-dasharray: 4 100;
    fill: none;
    opacity: 0.9;
    animation: flow-pulse 2s linear infinite;
  }

  .topo-node-airflow {
    border-color: rgba(245, 158, 11, 0.55) !important;
    box-shadow: 0 0 12px rgba(245, 158, 11, 0.25), var(--topo-node-shadow);
  }

  .topo-node-hadoop {
    border-color: rgba(57, 255, 20, 0.45) !important;
    box-shadow: 0 0 12px rgba(57, 255, 20, 0.2), var(--topo-node-shadow);
  }

  .topo-node {
    @apply mx-auto w-[72%] max-w-[104px] rounded border px-1.5 py-1 text-left transition-all;
    background: var(--topo-node-bg);
    border-color: var(--topo-node-border);
    box-shadow: var(--topo-node-shadow);
  }

  .topo-node:hover {
    filter: brightness(1.12);
    transform: translateY(-1px);
  }

  .topo-node-selected {
    @apply ring-2 ring-cyan-400/60 border-cyan-300;
  }

  .topo-stage-col {
    @apply flex min-w-[100px] flex-1 flex-col px-1 py-1.5 last:border-r-0;
    border-right: 1px dashed var(--topo-stage-border);
  }

  .topo-stage-col--sources { background: linear-gradient(180deg, rgba(16, 185, 129, 0.08), transparent 60%); }
  .topo-stage-col--ingestion { background: linear-gradient(180deg, rgba(6, 182, 212, 0.1), transparent 60%); }
  .topo-stage-col--compute { background: linear-gradient(180deg, rgba(139, 92, 246, 0.1), transparent 60%); }
  .topo-stage-col--storage { background: linear-gradient(180deg, rgba(37, 99, 235, 0.1), transparent 60%); }
  .topo-stage-col--consumers { background: linear-gradient(180deg, rgba(245, 158, 11, 0.08), transparent 60%); }
}

@layer utilities {
  .scrollbar-thin {
    scrollbar-width: thin;
    scrollbar-color: rgb(var(--border-strong)) transparent;
  }

  .scroll-x-stable {
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-gutter: stable;
  }
}


/* ── Knowledge Chat: RAG architecture animated flow ─────────────────────────── */
@keyframes rag-flow { from { background-position: 0 0; } to { background-position: 20px 0; } }
@keyframes rag-dot { 0% { left: 0; opacity: 0; } 12% { opacity: 1; } 88% { opacity: 1; } 100% { left: 100%; opacity: 0; } }
@keyframes rag-node-pulse {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 11px 1px var(--rag-glow, rgba(56,189,248,0.4)); }
}
.rag-track { animation: rag-flow 2.2s linear infinite; }
.rag-dot { animation: rag-dot 3s linear infinite; }
.rag-node { animation: rag-node-pulse 3.2s ease-in-out infinite; }
.rag-flowing .rag-track { animation-duration: 0.6s; }
.rag-flowing .rag-dot { animation-duration: 1s; }
.rag-flowing .rag-node { animation-duration: 1.2s; }
@media (prefers-reduced-motion: reduce) {
  .rag-track, .rag-dot, .rag-node { animation: none !important; }
}


/* RAG flow — active/done stage states (real-time per-stage pulsing) */
@keyframes rag-active-pulse {
  0%, 100% { box-shadow: 0 0 0 0 var(--rag-glow); transform: scale(1); }
  50% { box-shadow: 0 0 16px 3px var(--rag-glow); transform: scale(1.08); }
}
.rag-node-active { animation: rag-active-pulse 0.8s ease-in-out infinite; border-color: var(--rag-line) !important; z-index: 1; }
.rag-node-done { border-color: var(--rag-line) !important; }
@media (prefers-reduced-motion: reduce) { .rag-node-active { animation: none !important; } }