/* ============================================================
   Mi Tienda — hoja de estilos única (sin frameworks, sin build)
   ============================================================ */

:root{
  --bg:            #f5f5f4;
  --surface:       #ffffff;
  --text:          #1c1c1c;
  --text-muted:    #737373;
  --border:        #e5e5e5;
  --dark:          #111111;
  --dark-2:        #262626;
  --accent:        #c1121f;
  --accent-dark:   #970d17;
  --success-bg:    #e2f7e6;
  --success-text:  #1a7a34;
  --error-bg:      #fbe3e1;
  --error-text:    #a3221a;
  --warning:       #c9971f;
  --info:          #1a5a9a;
  --whatsapp:      #25D366;
  --radius:        10px;
  --radius-sm:     6px;
  --shadow:        0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-hover:  0 10px 24px rgba(0,0,0,.10);
}

*, *::before, *::after{ box-sizing: border-box; }

body{
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a{ color: inherit; }
img{ max-width: 100%; display: block; }

h1{ font-size: 26px; margin: 0 0 6px; letter-spacing: -0.02em; }
h2{ font-size: 20px; margin: 0 0 10px; }
h3{ font-size: 16px; margin: 0 0 10px; }

/* ---------- layout ---------- */
main{
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

.page-header{
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

/* ---------- header / nav ---------- */
header.top{
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--dark);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  box-shadow: var(--shadow);
}

.logo{
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-decoration: none;
}

nav.categorias{
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

nav.categorias a{
  color: #ccc;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color .15s ease;
}
nav.categorias a:hover{ color: #fff; }

.header-actions{
  display: flex;
  gap: 14px;
  align-items: center;
}

.cuenta-link{
  color: #ddd;
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
}
.cuenta-link:hover{ color: #fff; }

.carrito-link{
  color: #fff;
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  background: var(--accent);
  padding: 9px 16px;
  border-radius: 999px;
  transition: background .15s ease;
  white-space: nowrap;
}
.carrito-link:hover{ background: var(--accent-dark); }

/* ---------- footer ---------- */
footer.site-footer{
  background: var(--dark);
  color: #999;
  text-align: center;
  padding: 26px 20px;
  margin-top: 50px;
  font-size: 13px;
}
footer.site-footer p{ margin: 4px 0; }

/* ---------- product grid / cards ---------- */
.grid-productos{
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 6px;
}

.card-producto{
  text-decoration: none;
  color: var(--text);
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: block;
  transition: transform .15s ease, box-shadow .15s ease;
}
.card-producto:hover{
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.card-producto .foto{
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--bg);
}
.card-producto .cuerpo{ padding: 14px; }
.card-producto .categoria{
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .04em;
  font-weight: 600;
}
.card-producto .nombre{ font-size: 15px; margin: 5px 0; }
.card-producto .precio{ font-size: 17px; font-weight: 700; color: var(--accent); }

.empty-state{
  color: var(--text-muted);
  font-size: 14px;
  grid-column: 1 / -1;
}

/* ---------- detalle de producto ---------- */
.detalle-producto{
  max-width: 1000px;
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius);
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}
.detalle-producto .imagen{ flex: 1 1 320px; max-width: 420px; }
.detalle-producto .imagen img{ width: 100%; border-radius: var(--radius-sm); object-fit: cover; }
.detalle-producto .info{ flex: 1 1 320px; }
.detalle-producto .precio{ font-size: 28px; color: var(--accent); font-weight: 800; margin: 10px 0; }
.detalle-producto .categoria{
  font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .04em; font-weight: 600;
}

/* ---------- formularios ---------- */
.form-group{ margin: 0 0 16px; }
.form-group label{
  display: block;
  font-weight: 600;
  margin-bottom: 6px;
  font-size: 14px;
}
input[type=text], input[type=email], input[type=password],
input[type=number], input[type=file], select, textarea{
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  transition: border-color .15s ease, box-shadow .15s ease;
}
input:focus, select:focus, textarea:focus{
  outline: none;
  border-color: var(--dark);
  box-shadow: 0 0 0 3px rgba(0,0,0,.06);
}
select{ max-width: 260px; }
textarea{ resize: vertical; }

.form-card{
  background: var(--surface);
  padding: 26px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.form-card.estrecha{ max-width: 420px; margin: 0 auto; }

/* ---------- botones ---------- */
.btn{
  display: inline-block;
  border: none;
  border-radius: var(--radius-sm);
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  font-family: inherit;
  transition: background .15s ease, transform .1s ease;
}
.btn:active{ transform: scale(.98); }
.btn-dark{ background: var(--dark); color: #fff; }
.btn-dark:hover{ background: var(--dark-2); }
.btn-accent{ background: var(--accent); color: #fff; }
.btn-accent:hover{ background: var(--accent-dark); }
.btn-danger{ background: var(--error-text); color: #fff; padding: 7px 12px; font-size: 12px; }
.btn-danger:hover{ background: #841b15; }
.btn-sm{ padding: 6px 12px; font-size: 12px; }
.btn-block{ width: 100%; }
.btn-whatsapp{
  display: inline-block;
  margin-top: 16px;
  background: var(--whatsapp);
  color: #fff;
  text-decoration: none;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 15px;
  text-align: center;
}
.btn-whatsapp:hover{ background: #1ebe5b; }

/* ---------- alertas ---------- */
.alert{
  padding: 11px 15px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 14px;
}
.alert p{ margin: 2px 0; }
.alert-error{ background: var(--error-bg); color: var(--error-text); }
.alert-success{ background: var(--success-bg); color: var(--success-text); }

/* ---------- tablas ---------- */
.tabla-wrap{
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
table{ width: 100%; border-collapse: collapse; }
thead{ background: #f0f0ef; }
th{ padding: 12px; text-align: left; font-size: 13px; color: var(--text-muted); }
td{ padding: 12px; border-bottom: 1px solid var(--border); font-size: 14px; }
tr:last-child td{ border-bottom: none; }
.celda-centro{ text-align: center; }

.form-cantidad{ display: inline-flex; gap: 6px; align-items: center; }
.form-cantidad input[type=number]{ width: 64px; padding: 6px; }

/* ---------- badges de estado ---------- */
.badge{
  color: #fff;
  padding: 4px 11px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge-pendiente{ background: var(--warning); }
.badge-pagado{ background: var(--success-text); }
.badge-enviado{ background: var(--info); }
.badge-cancelado{ background: var(--error-text); }
.badge-default{ background: var(--text-muted); }

/* ---------- resumen / checkout ---------- */
.checkout-grid{ display: flex; gap: 32px; flex-wrap: wrap; margin-top: 10px; }
.checkout-grid .form-card{ flex: 1 1 360px; }
.resumen{ flex: 1 1 280px; align-self: start; }
.resumen-linea{ display: flex; justify-content: space-between; font-size: 14px; margin: 6px 0; }
.resumen-total{ display: flex; justify-content: space-between; font-size: 18px; font-weight: 700; }
hr{ border: none; border-top: 1px solid var(--border); margin: 14px 0; }

/* ---------- confirmación de pedido ---------- */
.contenedor-confirmacion{
  max-width: 600px;
  margin: 40px auto;
  background: var(--surface);
  padding: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.datos-banco{ background: var(--bg); border-radius: var(--radius-sm); padding: 16px; margin: 18px 0; }
.datos-banco p{ margin: 6px 0; font-size: 14px; }
.datos-banco strong{ display: inline-block; min-width: 110px; }
.total-pagar{ font-size: 20px; font-weight: 800; color: var(--accent); }
.form-subida{ margin-top: 20px; border-top: 1px solid var(--border); padding-top: 20px; }
.form-subida input[type=file]{ margin: 10px 0; }
.comprobante-actual{ margin-top: 14px; font-size: 13px; color: var(--text-muted); }

/* ---------- utilidades ---------- */
.texto-muted{ color: var(--text-muted); font-size: 13px; }
.text-right{ text-align: right; }
.mt-lg{ margin-top: 20px; }

@media (max-width: 640px){
  header.top{ padding: 12px 16px; }
  main{ padding: 20px 14px 40px; }
  .detalle-producto{ padding: 20px; }
}