:root {
  --ink: #000000;
  --cream: #F1EFE7;
  --cream-dim: #E4E1D6;
  --bg: #FBFAF7;
  --white: #FFFFFF;
  --gris-borde: #E5E3DA;
  --gris-texto: #5C5A54;
  --acento: #000000;
  --acento-hover: #2A2A2A;
  --rojo: #B3261E;
  --verde: #1E5631;
  --amarillo-estrella: #C99A2E;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--cream);
  color: var(--ink);
  padding: 12px 28px;
  border-bottom: 1px solid var(--gris-borde);
}
.topbar-brand { display: flex; align-items: center; }
.topbar-brand img { height: 30px; width: auto; display: block; }
.topbar-nav a {
  color: var(--ink);
  text-decoration: none;
  margin-left: 22px;
  font-size: 0.85rem;
  opacity: 0.7;
  letter-spacing: 0.01em;
}
.topbar-nav a:hover { opacity: 1; }

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 60px;
}

h1 { margin-bottom: 4px; letter-spacing: -0.01em; }
.muted { color: var(--gris-texto); }
.small { font-size: 0.85rem; }
.accent { color: var(--ink); font-weight: 600; }

.auth-card {
  max-width: 380px;
  margin: 60px auto;
  background: var(--white);
  color: var(--ink);
  padding: 40px 32px;
  border-radius: 14px;
  border: 1px solid var(--gris-borde);
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  text-align: center;
}
.auth-card .logo-wrap { margin-bottom: 28px; }
.auth-card .logo-wrap img { width: 65%; max-width: 220px; height: auto; display: block; margin: 0 auto; }
.auth-card h1 { color: var(--ink); font-size: 1.4rem; }
.auth-card .muted { color: var(--gris-texto); }
.auth-card form { text-align: left; margin-top: 20px; }
.auth-card label { color: var(--gris-texto); }
.auth-card input {
  background: var(--white);
  border: 1px solid var(--gris-borde);
  color: var(--ink);
}
.auth-card input:focus { outline: 2px solid var(--ink); outline-offset: 1px; }
.auth-card .flash-error {
  background: #FBEEEC; color: #8C2B21; border: 1px solid #E7B8B0;
  text-align: left;
}
.auth-card .flash-error a { color: var(--ink); }
.auth-card .btn-primary { background: var(--ink); color: var(--cream); }
.auth-card .btn-primary:hover { background: var(--acento-hover); }

label { display: block; font-size: 0.85rem; font-weight: 600; margin: 14px 0 4px; }
input[type=text], input[type=password], input[type=number], select {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--gris-borde);
  border-radius: 8px;
  font-size: 0.95rem;
  background: var(--white);
  color: var(--ink);
}
input:focus, select:focus { outline: 2px solid var(--ink); outline-offset: 1px; }

.btn {
  display: inline-block;
  border: none;
  border-radius: 8px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary { background: var(--ink); color: var(--cream); }
.btn-primary:hover { background: var(--acento-hover); }
.btn-secondary { background: var(--cream); color: var(--ink); border: 1px solid var(--gris-borde); }
.btn-secondary:hover { background: var(--cream-dim); }
.btn-danger { background: var(--white); color: var(--rojo); border: 1px solid var(--rojo); }
.btn-danger:hover { background: #FBEEEC; }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn-block { width: 100%; margin-top: 18px; }

.flash-stack { margin-bottom: 20px; }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 8px; font-size: 0.9rem; }
.flash-error { background: #FBEEEC; color: #8C2B21; border: 1px solid #E7B8B0; }
.flash-success { background: var(--cream); color: #33321E; border: 1px solid var(--cream-dim); }
.flash-success-password { background: #FFF8E6; color: #6B5300; border: 1px solid #E9D48E; font-family: monospace; }

.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; margin-bottom: 6px; }
.calc-form { background: var(--white); padding: 24px; border-radius: 12px; border: 1px solid var(--gris-borde); }

.resultado-wrap { margin-top: 28px; }
.opciones-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 640px) { .opciones-grid, .grid-3 { grid-template-columns: 1fr; } }

.opcion-card {
  background: var(--white);
  border: 1px solid var(--gris-borde);
  border-radius: 12px;
  padding: 20px;
}
.opcion-mejor { border: 2px solid var(--ink); box-shadow: 0 2px 10px rgba(0,0,0,0.08); background: var(--cream); }
.opcion-etiqueta { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; color: var(--ink); letter-spacing: 0.04em; }
.opcion-card:not(.opcion-mejor) .opcion-etiqueta { color: var(--gris-texto); }
.opcion-agencia { font-size: 1.2rem; font-weight: 700; margin-top: 4px; }
.opcion-entrega { font-size: 0.75rem; font-weight: 600; color: var(--rojo); background: #FBEEEC; display: inline-block; padding: 2px 8px; border-radius: 6px; margin-top: 6px; }
.opcion-precio { font-size: 1.6rem; font-weight: 800; margin: 6px 0; }
.estrellas { color: var(--amarillo-estrella); font-size: 1.1rem; letter-spacing: 1px; }
.estrellas-num { color: var(--gris-texto); font-size: 0.85rem; }
.opcion-detalle { margin-top: 10px; line-height: 1.5; }

.panel { background: var(--white); border: 1px solid var(--gris-borde); border-radius: 12px; padding: 24px; margin-bottom: 24px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.stat-box { background: var(--cream); border-radius: 10px; padding: 16px; text-align: center; }
.stat-num { font-size: 1.6rem; font-weight: 800; }
.stat-label { font-size: 0.8rem; color: var(--gris-texto); margin-top: 2px; }

.import-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 16px 0; }
.import-form { background: var(--bg); border: 1px solid var(--gris-borde); padding: 14px; border-radius: 10px; }
.import-form input[type=file] { margin: 8px 0; font-size: 0.8rem; }

.inline-form { display: flex; gap: 10px; align-items: center; margin-bottom: 6px; }
.inline-form input, .inline-form select { width: auto; }
.inline { display: inline; }

.tabla-simple { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 0.88rem; }
.tabla-simple th, .tabla-simple td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--gris-borde); }
.tabla-simple th { color: var(--gris-texto); font-weight: 600; font-size: 0.78rem; text-transform: uppercase; }