:root {
  --color-primario: #7B4B2A;
  --color-primario-oscuro: #5E3A1F;
  --color-acento: #C9972B;
  --color-acento-oscuro: #A87A1E;
  --color-fondo: #FAF6F0;
  --color-superficie: #FFFDF9;
  --color-texto: #2E1D12;
  --color-texto-secundario: #7A6552;
  --color-borde: #E8DCC8;
  --color-exito: #4C7A3D;
  --color-error: #B23A2E;
  --color-advertencia: #C9972B;
  --radio: 10px;
  --sombra: 0 2px 8px rgba(94,58,31,0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Roboto', Arial, sans-serif;
  background: var(--color-fondo);
  color: var(--color-texto);
}

.loading-inicial {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 100vh; color: var(--color-texto-secundario);
}
.spin { animation: girar 1s linear infinite; font-size: 32px; }
@keyframes girar { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

/* ---- Layout general (post-login) ---- */
.layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px; background: var(--color-primario); color: #fff;
  padding: 20px 0; flex-shrink: 0;
}
.sidebar nav a {
  display: flex; align-items: center; gap: 10px; padding: 12px 20px; color: #fff;
  text-decoration: none; opacity: 0.85; cursor: pointer;
}
.sidebar nav a:hover, .sidebar nav a.activo { opacity: 1; background: rgba(255,255,255,0.12); }
.sidebar .usuario-info { padding: 16px 20px; font-size: 13px; opacity: 0.85; border-top: 1px solid rgba(255,255,255,0.2); margin-top: 16px; }

.contenido { flex: 1; padding: 24px; max-width: 1100px; }

/* ---- Login ---- */
.login-logo { display: block; width: 72px; height: 72px; margin: 0 auto 12px; }

.sidebar-brand { display: flex; align-items: center; gap: 10px; padding: 0 20px 16px; border-bottom: 1px solid rgba(255,255,255,0.2); }
.sidebar-logo { width: 38px; height: 38px; flex-shrink: 0; }
.sidebar-brand h1 { font-size: 14px; line-height: 1.3; margin: 0; }

.sidebar { display: flex; flex-direction: column; }
.sidebar nav { margin-top: 16px; }

.login-pantalla { display: flex; align-items: center; justify-content: center; height: 100vh; }
.login-card {
  background: var(--color-superficie); padding: 40px; border-radius: var(--radio);
  box-shadow: var(--sombra); width: 100%; max-width: 380px;
}
.login-card h1 { color: var(--color-primario); text-align: center; margin-top: 0; font-size: 20px; }

/* ---- Formularios ---- */
label { display: block; font-size: 13px; color: var(--color-texto-secundario); margin: 14px 0 4px; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--color-borde); border-radius: 6px;
  font-size: 14px; font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--color-primario); outline-offset: -1px; }

button, .btn {
  background: var(--color-primario); color: #fff; border: none; padding: 10px 18px;
  border-radius: 6px; cursor: pointer; font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px;
}
button:hover, .btn:hover { background: var(--color-primario-oscuro); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-secundario { background: #fff; color: var(--color-primario); border: 1px solid var(--color-primario); }
.btn-secundario:hover { background: #f3e5f5; }
.btn-peligro { background: var(--color-error); }

/* ---- Tarjetas / Dashboard ---- */
.grid-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.card { background: var(--color-superficie); border-radius: var(--radio); padding: 18px; box-shadow: var(--sombra); }
.card .valor { font-size: 28px; font-weight: 700; color: var(--color-primario); }
.card .etiqueta { font-size: 13px; color: var(--color-texto-secundario); }

/* ---- Tablas ---- */
table { width: 100%; border-collapse: collapse; background: var(--color-superficie); border-radius: var(--radio); overflow: hidden; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-borde); font-size: 14px; }
th { background: #FAFAFA; font-weight: 600; color: var(--color-texto-secundario); font-size: 12px; text-transform: uppercase; }
tr:hover td { background: #FAF7FC; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.badge-activo { background: #E8F5E9; color: var(--color-exito); }
.badge-inactivo { background: #FFEBEE; color: var(--color-error); }
.badge-pendiente { background: #FFF3E0; color: var(--color-advertencia); }

.toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }

.alerta { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 14px; }
.alerta-error { background: #FFEBEE; color: var(--color-error); }
.alerta-exito { background: #E8F5E9; color: var(--color-exito); }

.upload-box {
  border: 2px dashed var(--color-borde); border-radius: var(--radio); padding: 24px;
  text-align: center; margin-bottom: 16px; background: var(--color-superficie);
}

pre.resultado-import {
  background: #FAFAFA; border-radius: 6px; padding: 12px; font-size: 12px; max-height: 300px; overflow: auto;
}

@media (max-width: 720px) {
  .layout { flex-direction: column; }
  .sidebar { width: 100%; }
  .contenido { padding: 16px; }
}