/* ── Reset & base ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:       #0f0f11;
  --surface:  #1a1a1f;
  --border:   #2a2a32;
  --muted:    #52525e;
  --text:     #e8e8ed;
  --sub:      #8b8b96;
  --accent:   #7c6ef7;
  --accent-h: #9b8fff;
  --green:    #34d399;
  --amber:    #fbbf24;
  --red:      #f87171;
  --radius:   8px;
  --font:     -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono:     "SF Mono", "Fira Code", "Cascadia Code", monospace;
}

html, body { height: 100%; background: var(--bg); color: var(--text); font-family: var(--font); font-size: 14px; line-height: 1.5; }

a { color: inherit; text-decoration: none; }
button { font-family: inherit; font-size: 14px; cursor: pointer; border: none; background: none; }

/* ── Layout ───────────────────────────────────────────────── */
#app { display: flex; flex-direction: column; min-height: 100vh; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px; height: 52px; border-bottom: 1px solid var(--border);
  background: var(--surface); flex-shrink: 0;
}
.topbar-brand { font-weight: 600; font-size: 15px; letter-spacing: -0.3px; color: var(--text); }
.topbar-right { display: flex; align-items: center; gap: 16px; color: var(--sub); font-size: 13px; }
.topbar-right button { color: var(--sub); font-size: 13px; }
.topbar-right button:hover { color: var(--text); }

.page { flex: 1; padding: 32px 24px; max-width: 1100px; width: 100%; margin: 0 auto; }

/* ── Typography ───────────────────────────────────────────── */
h1 { font-size: 20px; font-weight: 600; letter-spacing: -0.3px; }
h2 { font-size: 16px; font-weight: 600; letter-spacing: -0.2px; }
.sub { color: var(--sub); font-size: 13px; }

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius); font-weight: 500;
  transition: background 0.12s, color 0.12s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-h); }
.btn-ghost { background: transparent; color: var(--sub); border: 1px solid var(--border); }
.btn-ghost:hover { color: var(--text); border-color: var(--muted); }
.btn-danger { background: transparent; color: var(--red); border: 1px solid var(--border); }
.btn-danger:hover { background: #f8717118; border-color: var(--red); }
.btn-sm { padding: 4px 10px; font-size: 13px; }

/* ── Pills ────────────────────────────────────────────────── */
.pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 500;
}
.pill-running  { background: #34d39920; color: var(--green); }
.pill-paused   { background: #fbbf2420; color: var(--amber); }
.pill-draft    { background: #52525e20; color: var(--muted); }
.pill-finished { background: #52525e20; color: var(--muted); }

/* ── Forms ────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-label { font-size: 13px; font-weight: 500; color: var(--sub); }
.form-input, .form-select {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius);
  color: var(--text); font-family: var(--font); font-size: 14px;
  padding: 8px 12px; width: 100%; transition: border-color 0.12s;
}
.form-input:focus, .form-select:focus { outline: none; border-color: var(--accent); }
.form-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238b8b96' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 10px center; padding-right: 30px; }
.form-row { display: grid; gap: 16px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

/* ── Cards ────────────────────────────────────────────────── */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.card-body { padding: 20px; }

/* ── Table ────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: 12px; font-weight: 500; color: var(--sub); padding: 10px 16px; border-bottom: 1px solid var(--border); white-space: nowrap; }
td { padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: #ffffff06; }

/* ── Page header ──────────────────────────────────────────── */
.page-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 24px; }
.page-header-left { display: flex; flex-direction: column; gap: 4px; }

/* ── Breadcrumb ───────────────────────────────────────────── */
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--sub); margin-bottom: 20px; }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { color: var(--muted); }

/* ── Results grid ─────────────────────────────────────────── */
.results-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.variant-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.variant-card.winner { border-color: var(--green); }
.variant-card-header { padding: 16px 20px 12px; border-bottom: 1px solid var(--border); display: flex; align-items: flex-start; justify-content: space-between; gap: 8px; }
.variant-card-header h3 { font-size: 15px; font-weight: 600; }
.variant-card-header .control-badge { font-size: 11px; color: var(--muted); background: var(--border); padding: 2px 7px; border-radius: 10px; }
.variant-meta { padding: 14px 20px; border-bottom: 1px solid var(--border); display: flex; gap: 24px; }
.variant-stat { display: flex; flex-direction: column; gap: 2px; }
.variant-stat-value { font-size: 18px; font-weight: 600; }
.variant-stat-label { font-size: 12px; color: var(--sub); }

.split-warning { display: flex; align-items: center; gap: 8px; padding: 10px 20px; background: #fbbf2410; border-bottom: 1px solid var(--border); font-size: 12px; color: var(--amber); }

.goals-table { width: 100%; border-collapse: collapse; }
.goals-table th { font-size: 11px; color: var(--muted); font-weight: 500; padding: 8px 20px; border-bottom: 1px solid var(--border); text-align: left; }
.goals-table td { padding: 10px 20px; border-bottom: 1px solid var(--border); font-size: 13px; vertical-align: middle; }
.goals-table tr:last-child td { border-bottom: none; }
.goals-table .cvr { font-weight: 600; font-size: 14px; }
.goals-table .lift-pos { color: var(--green); font-weight: 600; }
.goals-table .lift-neg { color: var(--red); font-weight: 600; }
.sig-tick { color: var(--green); font-size: 12px; }
.sig-pending { color: var(--muted); font-size: 11px; }
.no-data { color: var(--muted); font-size: 12px; }

/* ── Goal builder ─────────────────────────────────────────── */
.goal-list { display: flex; flex-direction: column; gap: 8px; }
.goal-row {
  display: grid; grid-template-columns: 24px 1fr 120px 1fr 36px;
  gap: 8px; align-items: center;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 12px;
}
.goal-row.dragging { opacity: 0.4; }
.goal-drag { cursor: grab; color: var(--muted); display: flex; align-items: center; font-size: 16px; user-select: none; }
.goal-drag:active { cursor: grabbing; }
.goal-remove { color: var(--muted); display: flex; align-items: center; justify-content: center; border-radius: 4px; padding: 2px; }
.goal-remove:hover { color: var(--red); background: #f8717118; }

/* ── Variant builder ──────────────────────────────────────── */
.variant-list { display: flex; flex-direction: column; gap: 8px; }
.variant-row {
  display: grid; grid-template-columns: 1fr 80px 100px 36px;
  gap: 8px; align-items: center;
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px 12px;
}
.variant-control-toggle { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--sub); white-space: nowrap; }
.variant-control-toggle input { accent-color: var(--accent); }

/* ── Empty state ──────────────────────────────────────────── */
.empty { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 64px 24px; gap: 12px; text-align: center; }
.empty-icon { font-size: 32px; opacity: 0.4; }
.empty p { color: var(--sub); font-size: 13px; }

/* ── Login ────────────────────────────────────────────────── */
.login-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg); }
.login-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 40px; width: 360px; display: flex; flex-direction: column; gap: 24px; }
.login-brand { font-size: 20px; font-weight: 700; letter-spacing: -0.5px; }
.login-card h2 { font-size: 16px; color: var(--sub); font-weight: 400; }

/* ── Alerts ───────────────────────────────────────────────── */
.alert { padding: 10px 14px; border-radius: var(--radius); font-size: 13px; }
.alert-error { background: #f8717118; color: var(--red); border: 1px solid #f8717140; }
.alert-success { background: #34d39918; color: var(--green); border: 1px solid #34d39940; }
.alert-warning { background: #fbbf2418; color: var(--amber); border: 1px solid #fbbf2440; }

/* ── Divider ──────────────────────────────────────────────── */
.section-divider { border: none; border-top: 1px solid var(--border); margin: 28px 0; }

/* ── Spinner ──────────────────────────────────────────────── */
.spinner { display: inline-block; width: 18px; height: 18px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading { display: flex; align-items: center; justify-content: center; padding: 64px; }

/* ── Misc ─────────────────────────────────────────────────── */
.gap-4 { display: flex; flex-direction: column; gap: 16px; }
.gap-2 { display: flex; flex-direction: column; gap: 8px; }
.row { display: flex; align-items: center; gap: 12px; }
.row-between { display: flex; align-items: center; justify-content: space-between; }
.text-muted { color: var(--muted); }
.text-sub { color: var(--sub); }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mr-1 { margin-right: 4px; }