:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --ink: #1c2333;
  --muted: #6b7280;
  --brand: #4f46e5;
  --brand-dark: #3730a3;
  --accent: #06b6d4;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
  --border: #e5e7eb;
  --radius: 12px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--ink);
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.nav {
  display: flex; align-items: center; gap: 24px;
  background: #111527; color: #fff;
  padding: 14px 28px;
}
.nav .logo { font-weight: 700; font-size: 18px; letter-spacing: .5px; color: #fff; }
.nav .logo span { color: var(--accent); }
.nav a { color: #cbd5e1; font-size: 14px; }
.nav a.active, .nav a:hover { color: #fff; text-decoration: none; }
.nav .spacer { flex: 1; }
.nav .userbox { font-size: 13px; color: #94a3b8; }

.container { max-width: 1180px; margin: 0 auto; padding: 28px 20px 60px; }

.hero {
  text-align: center; padding: 90px 20px 70px;
  background: linear-gradient(160deg, #111527 0%, #1e1b4b 60%, #312e81 100%);
  color: #fff;
}
.hero h1 { font-size: 44px; margin: 0 0 14px; }
.hero h1 span { color: var(--accent); }
.hero p { font-size: 19px; color: #c7d2fe; max-width: 720px; margin: 0 auto 34px; }

.btn {
  display: inline-block; padding: 11px 22px; border-radius: 10px;
  background: var(--brand); color: #fff !important; border: none;
  font-size: 15px; font-weight: 600; cursor: pointer;
}
.btn:hover { background: var(--brand-dark); text-decoration: none; }
.btn.secondary { background: transparent; border: 1px solid #6366f1; color: #c7d2fe !important; }
.btn.small { padding: 5px 12px; font-size: 13px; border-radius: 8px; }
.btn.ghost { background: #eef2ff; color: var(--brand) !important; }
.btn.danger { background: var(--err); }

.grid { display: grid; gap: 18px; }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(380px, 1fr)); }

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px;
}
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card .big { font-size: 30px; font-weight: 700; }
.card .sub { color: var(--muted); font-size: 13px; }

.kpi { border-left: 4px solid var(--brand); }

h2.section { margin: 34px 0 14px; font-size: 20px; }

table.data { width: 100%; border-collapse: collapse; background: var(--panel); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); }
table.data th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); padding: 10px 14px; background: #fafafa; border-bottom: 1px solid var(--border); }
table.data td { padding: 10px 14px; border-bottom: 1px solid #f1f2f4; font-size: 14px; }
table.data tr:last-child td { border-bottom: none; }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.ok { background: #dcfce7; color: var(--ok); }
.badge.warn { background: #fef3c7; color: var(--warn); }
.badge.err { background: #fee2e2; color: var(--err); }
.badge.muted { background: #f1f5f9; color: var(--muted); }
.badge.info { background: #e0f2fe; color: #0369a1; }

form.stack { display: flex; flex-direction: column; gap: 14px; max-width: 520px; }
form.stack label { font-size: 13px; font-weight: 600; color: var(--ink); display: block; margin-bottom: 4px; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: #fff;
}
textarea { min-height: 90px; }

.checks { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 8px; }
.checks label { font-weight: 400; display: flex; gap: 8px; align-items: center; border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; background: #fff; cursor: pointer; font-size: 14px; }

.alert { padding: 12px 16px; border-radius: 10px; margin-bottom: 18px; font-size: 14px; }
.alert.ok { background: #dcfce7; color: #166534; }
.alert.err { background: #fee2e2; color: #991b1b; }

.auth-wrap { display: flex; justify-content: center; padding: 70px 16px; }
.auth-card { width: 380px; }

.inline-form { display: inline; }
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; flex-wrap: wrap; }
.footer { text-align: center; color: var(--muted); font-size: 13px; padding: 26px; }
canvas { max-width: 100%; }
details summary { cursor: pointer; color: var(--brand); font-size: 13px; }
code { background: #f1f5f9; padding: 2px 6px; border-radius: 6px; font-size: 13px; }

/* ============================================================
   Dashboard del cliente — sistema visual propio (prefijo dash-)
   ============================================================ */
.dash {
  --shadow-sm: 0 1px 2px rgba(16,24,40,.04), 0 1px 3px rgba(16,24,40,.07);
  --shadow-md: 0 4px 12px rgba(16,24,40,.06), 0 2px 4px rgba(16,24,40,.05);
  --ring: 0 0 0 1px var(--border);
}

/* Cabecera con título + selector de periodo segmentado */
.dash-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 18px; flex-wrap: wrap; margin-bottom: 22px;
}
.dash-head .titles h1 { font-size: 24px; margin: 0; letter-spacing: -.02em; }
.dash-head .titles p { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.period {
  display: inline-flex; background: #fff; border: 1px solid var(--border);
  border-radius: 10px; padding: 3px; box-shadow: var(--shadow-sm);
}
.period a {
  font-size: 13px; font-weight: 600; color: var(--muted);
  padding: 6px 12px; border-radius: 7px; line-height: 1;
}
.period a:hover { color: var(--ink); text-decoration: none; }
.period a.on { background: var(--brand); color: #fff; }

/* Fila de KPIs */
.kpis { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); margin-bottom: 20px; }
.kpi-card {
  position: relative; background: #fff; border-radius: 16px; padding: 20px 20px 18px;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm); overflow: hidden;
}
.kpi-card .klabel { display: flex; align-items: center; gap: 8px; font-size: 12.5px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.kpi-card .kicon { width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: #eef2ff; color: var(--brand); font-size: 16px; }
.kpi-card .kval { font-size: 30px; font-weight: 800; letter-spacing: -.025em; margin: 14px 0 2px; line-height: 1.05; }
.kpi-card .kval .cur { font-size: 14px; font-weight: 700; color: var(--muted); margin-right: 4px; vertical-align: 2px; }
.kpi-card .ksub { font-size: 13px; color: var(--muted); }
.kpi-card.primary {
  background: linear-gradient(150deg, #312e81 0%, #4f46e5 55%, #6366f1 100%);
  border-color: transparent; color: #fff;
}
.kpi-card.primary .klabel, .kpi-card.primary .ksub { color: #c7d2fe; }
.kpi-card.primary .kicon { background: rgba(255,255,255,.16); color: #fff; }
.kpi-card .spark { position: absolute; right: 0; bottom: 0; left: 0; height: 34px; opacity: .9; }

/* Paneles (gráficos y tablas) */
.panels { display: grid; gap: 16px; }
.panels.two { grid-template-columns: 1.55fr 1fr; }
.panels.equal { grid-template-columns: 1fr 1fr; }
@media (max-width: 880px) { .panels.two, .panels.equal { grid-template-columns: 1fr; } }
.panel {
  background: #fff; border: 1px solid var(--border); border-radius: 16px;
  padding: 18px 20px; box-shadow: var(--shadow-sm); min-width: 0;
}
.panel-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.panel-head h3 { margin: 0; font-size: 15px; font-weight: 700; }
.panel-head .hint { font-size: 12px; color: var(--muted); }
.panel.tall { margin-top: 16px; }

/* Lista de barras (top productos / tiendas) */
.bars { display: flex; flex-direction: column; gap: 11px; }
.bar-row { display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; align-items: center; }
.bar-row .bname { font-size: 13.5px; font-weight: 600; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bar-row .bmeta { font-size: 12px; color: var(--muted); }
.bar-row .bval { font-size: 13.5px; font-weight: 700; text-align: right; white-space: nowrap; }
.bar-row .btrack { grid-column: 1 / -1; height: 6px; border-radius: 99px; background: #eef2f7; overflow: hidden; }
.bar-row .bfill { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--brand), var(--accent)); }

/* Estado vacío elegante */
.empty {
  text-align: center; padding: 46px 20px; color: var(--muted);
  border: 1px dashed var(--border); border-radius: 16px; background: #fff;
}
.empty .eemoji { font-size: 30px; }
.empty h3 { margin: 12px 0 4px; color: var(--ink); font-size: 16px; }
.empty p { margin: 0; font-size: 14px; }

.chip { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 11.5px; font-weight: 700; background: #eef2ff; color: var(--brand); }