/* A/B Testing tab — dashboard section #abtest. Styled with the dashboard's own
   theme variables so it matches light and dark automatically. Everything is
   scoped under .ab- / #ab-root so it can't collide with the rest of the app. */

#ab-root { font-family: var(--font-sans); color: var(--foreground); }

.ab-loading, .ab-empty {
  padding: 40px 20px; text-align: center; color: var(--muted-foreground);
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); margin-top: 8px;
}

/* cards */
.ab-card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; box-shadow: var(--shadow); margin-bottom: 16px;
}
.ab-card h3 { margin: 0 0 4px; font-size: 15px; font-weight: 700; color: var(--foreground); }
.ab-hint { color: var(--muted-foreground); font-size: 13px; margin: 0 0 14px; line-height: 1.5; }

/* form */
.ab-form label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; font-weight: 600; color: var(--foreground); margin-bottom: 12px; }
.ab-form .opt { color: var(--muted-foreground); font-weight: 400; }
.ab-form input[type="text"], .ab-form input[type="url"], .ab-form input[type="number"] {
  font: inherit; padding: 10px 12px; border-radius: var(--radius-sm); border: 1px solid var(--input);
  background: var(--background); color: var(--foreground); width: 100%;
}
.ab-form input:focus { outline: 2px solid var(--ring); outline-offset: -1px; }
.ab-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* buttons */
.ab-btn {
  font: inherit; font-weight: 600; font-size: 14px; cursor: pointer;
  padding: 9px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: var(--card); color: var(--foreground); transition: filter .12s, background .12s;
}
.ab-btn:hover { filter: brightness(0.97); }
.ab-btn.primary { background: var(--primary); color: var(--primary-foreground); border-color: transparent; }
.ab-btn.ghost { background: transparent; }
.ab-btn.sm { padding: 6px 10px; font-size: 13px; }
.ab-btn.danger { color: var(--destructive, #e41e3f); border-color: var(--border); }
.ab-btn.danger:hover { background: var(--destructive, #e41e3f); color: #fff; }

/* generated link box */
.ab-linkout { margin-top: 14px; padding: 14px; border-radius: var(--radius-sm); background: var(--muted); border: 1px solid var(--border); display: none; }
.ab-linkout.show { display: block; }
.ab-linkout code { display: block; word-break: break-all; font-size: 13px; background: var(--background); padding: 9px 11px; border-radius: 6px; border: 1px solid var(--border); margin: 8px 0; color: var(--foreground); }

/* table */
.ab-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.ab-table th, .ab-table td { text-align: left; padding: 11px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.ab-table th { color: var(--muted-foreground); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.ab-table td .u { color: var(--muted-foreground); font-size: 12px; word-break: break-all; }
.ab-actions button { margin: 0 4px 4px 0; }

/* status pill */
.ab-pill { font-size: 11px; font-weight: 700; padding: 2px 9px; border-radius: var(--radius-pill); background: var(--muted); color: var(--muted-foreground); }
.ab-pill.on { background: rgba(49,162,76,.15); color: #2e9c4a; }
.ab-pill.exp { background: rgba(247,185,40,.18); color: #b7860b; }

/* KPIs + split bar */
.ab-kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 12px; }
.ab-kpi { background: var(--background); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 14px; }
.ab-kpi .n { font-size: 22px; font-weight: 800; color: var(--foreground); line-height: 1; }
.ab-kpi .l { font-size: 12px; color: var(--muted-foreground); margin-top: 4px; }
.ab-bar { height: 10px; border-radius: 999px; background: var(--muted); overflow: hidden; display: flex; }
.ab-bar .a { background: var(--primary); }
.ab-bar .b { background: #7c3aed; }
.ab-legend { display: flex; gap: 18px; font-size: 12px; color: var(--muted-foreground); margin-top: 8px; }
.ab-dot { display: inline-block; width: 9px; height: 9px; border-radius: 3px; margin-right: 5px; vertical-align: middle; }
.ab-dot.a { background: var(--primary); } .ab-dot.b { background: #7c3aed; }

/* how-it-works note */
.ab-note { font-size: 13px; color: var(--muted-foreground); line-height: 1.6; }
.ab-note ol { padding-left: 18px; margin: 6px 0; }
.ab-note .warn { display: block; margin-top: 12px; padding: 12px 14px; border-left: 3px solid #f7b928; background: rgba(247,185,40,.10); border-radius: var(--radius-sm); color: var(--foreground); }

@media (max-width: 640px) { .ab-2col { grid-template-columns: 1fr; } .ab-kpis { grid-template-columns: repeat(2, 1fr); } }