/* ------------------------------------------------------------------
   Design tokens. Light is default; dark via [data-bs-theme="dark"].
   ------------------------------------------------------------------ */
:root {
  --aia-font: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --aia-bg: #f6f7fb;
  --aia-surface: #ffffff;
  --aia-surface-2: #f1f3f9;
  --aia-border: #e4e7ef;
  --aia-text: #111827;
  --aia-muted: #6b7280;
  --aia-accent: #4f46e5;
  --aia-accent-soft: #eef2ff;
  --aia-accent-2: #0ea5e9;
  --aia-up: #059669;
  --aia-up-soft: #ecfdf5;
  --aia-down: #dc2626;
  --aia-down-soft: #fef2f2;
  --aia-warn: #d97706;
  --aia-warn-soft: #fffbeb;
  --aia-ai: #7c3aed;
  --aia-ai-soft: #f5f3ff;
  --aia-radius: 14px;
  --aia-shadow: 0 1px 2px rgba(16, 24, 40, .04), 0 1px 3px rgba(16, 24, 40, .06);
  --aia-sidebar-w: 248px;
}
[data-bs-theme="dark"] {
  --aia-bg: #0b0f19;
  --aia-surface: #121826;
  --aia-surface-2: #1a2233;
  --aia-border: #243049;
  --aia-text: #e5e7eb;
  --aia-muted: #94a3b8;
  --aia-accent: #818cf8;
  --aia-accent-soft: #1e1b4b;
  --aia-up: #34d399;
  --aia-up-soft: #052e22;
  --aia-down: #f87171;
  --aia-down-soft: #3b0d0d;
  --aia-warn: #fbbf24;
  --aia-warn-soft: #3a2a06;
  --aia-ai: #a78bfa;
  --aia-ai-soft: #231a3d;
  --aia-shadow: 0 1px 2px rgba(0, 0, 0, .4);
}

html, body { background: var(--aia-bg); color: var(--aia-text); font-family: var(--aia-font); }
body { font-size: .925rem; -webkit-font-smoothing: antialiased; }
a { color: var(--aia-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.text-muted, .muted { color: var(--aia-muted) !important; }
.tabular { font-variant-numeric: tabular-nums; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: .85em; }

/* ------------------------------ Shell ------------------------------ */
.aia-shell { display: flex; min-height: 100vh; }
.aia-sidebar {
  width: var(--aia-sidebar-w); flex: 0 0 var(--aia-sidebar-w);
  background: var(--aia-surface); border-right: 1px solid var(--aia-border);
  position: sticky; top: 0; height: 100vh; overflow-y: auto; padding: 18px 14px;
}
.aia-brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; color: var(--aia-text); padding: 4px 8px 16px; }
.aia-brand:hover { text-decoration: none; }
.aia-logo {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; color: #fff;
  background: linear-gradient(135deg, var(--aia-accent), var(--aia-ai));
}
.aia-nav-group { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--aia-muted); padding: 14px 10px 6px; }
.aia-nav a {
  display: flex; align-items: center; gap: 10px; padding: 7px 10px; border-radius: 9px;
  color: var(--aia-text); font-weight: 500; opacity: .85;
}
.aia-nav a i { width: 18px; text-align: center; color: var(--aia-muted); }
.aia-nav a:hover { background: var(--aia-surface-2); text-decoration: none; opacity: 1; }
.aia-nav a.active { background: var(--aia-accent-soft); color: var(--aia-accent); opacity: 1; }
.aia-nav a.active i { color: var(--aia-accent); }
.aia-nav .badge-ai { margin-left: auto; font-size: .62rem; background: var(--aia-ai-soft); color: var(--aia-ai); border-radius: 6px; padding: 2px 6px; }

.aia-main { flex: 1; min-width: 0; }
.aia-topbar {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 14px 28px; border-bottom: 1px solid var(--aia-border); background: var(--aia-surface);
  position: sticky; top: 0; z-index: 20;
}
.aia-topbar h1 { font-size: 1.15rem; font-weight: 650; margin: 0; }
.aia-content { padding: 26px 28px 60px; max-width: 1440px; }
.aia-site-switch { max-width: 240px; }

/* ------------------------------ Cards ------------------------------ */
.aia-card {
  background: var(--aia-surface); border: 1px solid var(--aia-border); border-radius: var(--aia-radius);
  box-shadow: var(--aia-shadow); padding: 20px;
}
.aia-card + .aia-card { margin-top: 0; }
.aia-card-title { font-size: .95rem; font-weight: 650; margin: 0 0 14px; display: flex; align-items: center; gap: 8px; }
.aia-card-title .sub { font-weight: 400; color: var(--aia-muted); font-size: .8rem; margin-left: auto; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.kpi { padding: 16px 18px; }
.kpi .label { color: var(--aia-muted); font-size: .78rem; font-weight: 500; }
.kpi .value { font-size: 1.45rem; white-space: nowrap; font-weight: 700; letter-spacing: -.02em; margin-top: 4px; font-variant-numeric: tabular-nums; }
.delta { font-size: .76rem; font-weight: 600; border-radius: 6px; padding: 1px 6px; display: inline-block; }
.delta.up { color: var(--aia-up); background: var(--aia-up-soft); }
.delta.down { color: var(--aia-down); background: var(--aia-down-soft); }
.delta.flat { color: var(--aia-muted); background: var(--aia-surface-2); }

/* AI briefing */
.aia-brief {
  background: linear-gradient(135deg, var(--aia-ai-soft), var(--aia-accent-soft));
  border: 1px solid var(--aia-border); border-radius: var(--aia-radius); padding: 22px 24px;
}
.aia-brief h2 { font-size: 1.05rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
.aia-brief .headline { font-size: 1.12rem; line-height: 1.55; font-weight: 500; }
.aia-brief ol { padding-left: 1.2rem; margin: 0; }
.aia-brief li { margin: 4px 0; }
.ai-chip { display: inline-flex; align-items: center; gap: 6px; font-size: .72rem; font-weight: 600; color: var(--aia-ai); background: var(--aia-surface); border: 1px solid var(--aia-border); border-radius: 999px; padding: 2px 10px; }

.insight { border-left: 4px solid var(--aia-border); }
.insight.sev-high { border-left-color: var(--aia-down); }
.insight.sev-medium { border-left-color: var(--aia-warn); }
.insight.sev-low { border-left-color: var(--aia-accent-2); }
.insight.positive { border-left-color: var(--aia-up); }
.conf { font-size: .7rem; font-weight: 600; border-radius: 6px; padding: 1px 7px; background: var(--aia-surface-2); color: var(--aia-muted); }
.evidence-table td, .evidence-table th { font-size: .8rem; padding: 4px 8px; }

/* Tables */
.aia-table { width: 100%; font-size: .87rem; }
.aia-table th { color: var(--aia-muted); font-weight: 500; font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; border-bottom: 1px solid var(--aia-border); padding: 8px 10px; white-space: nowrap; }
.aia-table td { padding: 9px 10px; border-bottom: 1px solid var(--aia-border); vertical-align: middle; }
.aia-table tr:last-child td { border-bottom: 0; }
.aia-table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.aia-table tbody tr:hover { background: var(--aia-surface-2); }
.aia-table .path { max-width: 360px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-cell { position: relative; }
.bar-cell .bar { position: absolute; inset: 4px auto 4px 0; background: var(--aia-accent-soft); border-radius: 4px; z-index: 0; }
.bar-cell span { position: relative; z-index: 1; }

/* Empty / loading states */
.aia-empty { text-align: center; padding: 38px 18px; color: var(--aia-muted); }
.aia-empty i { font-size: 1.8rem; opacity: .6; margin-bottom: 10px; display: block; }
.aia-empty .title { color: var(--aia-text); font-weight: 600; margin-bottom: 4px; }
.skeleton { background: linear-gradient(90deg, var(--aia-surface-2) 25%, var(--aia-border) 37%, var(--aia-surface-2) 63%); background-size: 400% 100%; animation: sk 1.4s ease infinite; border-radius: 8px; min-height: 16px; }
@keyframes sk { 0% { background-position: 100% 50%; } 100% { background-position: 0 50%; } }

/* Journey timeline */
.timeline { list-style: none; padding-left: 0; margin: 0; position: relative; }
.timeline li { position: relative; padding: 0 0 16px 28px; }
.timeline li::before { content: ""; position: absolute; left: 8px; top: 18px; bottom: -2px; width: 2px; background: var(--aia-border); }
.timeline li:last-child::before { display: none; }
.timeline .dot { position: absolute; left: 1px; top: 3px; width: 16px; height: 16px; border-radius: 50%; background: var(--aia-surface); border: 3px solid var(--aia-accent); }
.timeline .dot.conv { border-color: var(--aia-up); background: var(--aia-up); }
.timeline .dot.src { border-color: var(--aia-ai); }
.timeline .dot.evt { border-color: var(--aia-accent-2); width: 12px; height: 12px; left: 3px; top: 5px; }
.path-flow { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.path-flow .step { background: var(--aia-surface-2); border: 1px solid var(--aia-border); border-radius: 7px; padding: 2px 8px; font-size: .8rem; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.path-flow .arrow { color: var(--aia-muted); font-size: .75rem; }

/* Funnel */
.funnel-step { display: grid; grid-template-columns: 220px 1fr 140px; gap: 14px; align-items: center; padding: 10px 0; border-bottom: 1px dashed var(--aia-border); }
.funnel-bar { height: 30px; background: var(--aia-accent); border-radius: 7px; min-width: 2px; opacity: .85; }
.funnel-drop { color: var(--aia-down); font-size: .8rem; }

/* Real-time */
.live-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--aia-up); display: inline-block; box-shadow: 0 0 0 0 rgba(5,150,105,.6); animation: pulse 2s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(5,150,105,.5);} 70% { box-shadow: 0 0 0 10px rgba(5,150,105,0);} 100% { box-shadow: 0 0 0 0 rgba(5,150,105,0);} }
.big-number { font-size: 3rem; font-weight: 750; letter-spacing: -.03em; line-height: 1; }

/* Analyst chat */
.chat { display: flex; flex-direction: column; gap: 14px; }
.chat .msg { max-width: 860px; }
.chat .msg.user { align-self: flex-end; background: var(--aia-accent); color: #fff; border-radius: 14px 14px 4px 14px; padding: 10px 14px; }
.chat .msg.ai { background: var(--aia-surface); border: 1px solid var(--aia-border); border-radius: 14px 14px 14px 4px; padding: 16px 18px; }
.followups .btn { margin: 4px 6px 0 0; }

/* Heatmap */
.heatmap-stage { position: relative; background: var(--aia-surface-2); border-radius: 10px; overflow: hidden; margin: 0 auto; }
.heatmap-stage iframe { border: 0; width: 100%; pointer-events: none; opacity: .55; display: block; }
.heatmap-stage canvas { position: absolute; left: 0; top: 0; pointer-events: none; }

/* Auth pages */
.auth-wrap { min-height: 100vh; display: grid; place-items: center; padding: 30px 16px; }
.auth-card { width: 100%; max-width: 440px; }
.auth-side { max-width: 440px; }

/* Forms */
.form-control, .form-select { border-radius: 10px; border-color: var(--aia-border); background-color: var(--aia-surface); }
.form-control:focus, .form-select:focus { border-color: var(--aia-accent); box-shadow: 0 0 0 .2rem color-mix(in srgb, var(--aia-accent) 20%, transparent); }
.btn { border-radius: 10px; font-weight: 550; }
.btn-primary { background: var(--aia-accent); border-color: var(--aia-accent); }
.btn-primary:hover, .btn-primary:focus { background: color-mix(in srgb, var(--aia-accent) 88%, #000); border-color: color-mix(in srgb, var(--aia-accent) 88%, #000); }
.snippet { background: #0f172a; color: #e2e8f0; border-radius: 10px; padding: 16px; font-size: .82rem; white-space: pre; overflow-x: auto; }
.trial-banner { background: var(--aia-accent-soft); color: var(--aia-accent); border-bottom: 1px solid var(--aia-border); padding: 8px 28px; font-size: .85rem; }
.trial-banner.expired { background: var(--aia-warn-soft); color: var(--aia-warn); }
.locked { position: relative; }
.locked-overlay { text-align: center; padding: 40px 20px; }

/* Responsive */
@media (max-width: 991.98px) {
  .aia-sidebar { position: fixed; left: 0; z-index: 1040; transform: translateX(-100%); transition: transform .2s ease; box-shadow: 0 0 40px rgba(0,0,0,.2); }
  .aia-sidebar.open { transform: none; }
  .aia-topbar { padding: 12px 16px; }
  .aia-topbar > .ms-auto { flex-wrap: wrap; justify-content: flex-end; width: 100%; }
  .aia-topbar h1 { font-size: 1.05rem; }
  .aia-content { padding: 18px 16px 50px; }
  .funnel-step { grid-template-columns: 1fr; gap: 6px; }
}
.nav-pills .nav-link { color: var(--aia-text); border-radius: 9px; }
.nav-pills .nav-link.active { background: var(--aia-accent); color: #fff; }
.list-group-item.active { background: var(--aia-accent); border-color: var(--aia-accent); }
.list-group-item.active .small { color: rgba(255,255,255,.8) !important; }