/* =========================================================
   Sistema de Gestión de Usuarios — Tema blanco/verde
   ========================================================= */

:root {
  --verde-primario: #16a34a;
  --verde-oscuro: #15803d;
  --verde-claro: #dcfce7;
  --verde-suave: #f0fdf4;
  --blanco: #ffffff;
  --gris-texto: #374151;
  --gris-suave: #6b7280;
  --gris-borde: #e5e7eb;
  --rojo: #dc2626;
  --rojo-suave: #fee2e2;
  --amarillo: #d97706;
  --amarillo-suave: #fef3c7;
  --sombra: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --sombra-lg: 0 10px 25px rgba(22, 163, 74, 0.08);
  --radio: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background: var(--verde-suave);
  color: var(--gris-texto);
  font-size: 15px;
  line-height: 1.5;
}

a { text-decoration: none; color: var(--verde-primario); }
a:hover { color: var(--verde-oscuro); }

/* ---------- Layout ---------- */
.app-wrapper { display: flex; min-height: 100vh; }

.sidebar {
  width: 250px;
  background: var(--blanco);
  border-right: 1px solid var(--gris-borde);
  padding: 24px 0;
  flex-shrink: 0;
}

.sidebar .logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 24px 20px;
  border-bottom: 1px solid var(--gris-borde);
  margin-bottom: 12px;
}

.sidebar .logo img {
  max-width: 100%;
  height: auto;
  width: 200px;
  display: block;
}

.sidebar .logo .icono {
  width: 36px; height: 36px;
  background: var(--verde-primario);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 700; font-size: 16px;
}

.sidebar .logo span { font-weight: 700; font-size: 16px; color: var(--gris-texto); }

.sidebar nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 24px;
  color: var(--gris-texto);
  font-size: 14px;
  font-weight: 500;
  border-left: 3px solid transparent;
}

.sidebar nav a .nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  color: inherit;
}

.sidebar nav a .nav-icon svg {
  width: 100%;
  height: 100%;
}

.sidebar nav a:hover { background: var(--verde-suave); }

.sidebar nav a.activo {
  background: var(--verde-claro);
  border-left-color: var(--verde-primario);
  color: var(--verde-oscuro);
}

.sidebar nav .separador {
  margin: 14px 24px 6px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--gris-suave);
  font-weight: 700;
}

.main-content { flex: 1; min-width: 0; }

.topbar {
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-borde);
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar h1 { font-size: 18px; margin: 0; font-weight: 700; }

.usuario-chip {
  display: flex; align-items: center; gap: 12px;
}

.usuario-chip .avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--verde-claro); color: var(--verde-oscuro);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px;
}

.usuario-chip .info { font-size: 13px; line-height: 1.2; }
.usuario-chip .info strong { display: block; font-size: 14px; }
.usuario-chip .info span { color: var(--gris-suave); }

.btn-logout {
  padding: 7px 14px; border-radius: 8px; font-size: 13px; font-weight: 600;
  background: var(--rojo-suave); color: var(--rojo); border: none; cursor: pointer;
}
.btn-logout:hover { background: #fecaca; }

.contenido { padding: 28px; max-width: 1200px; margin: 0 auto; }

/* ---------- Login ---------- */
.login-page {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--verde-suave), var(--verde-claro));
  padding: 20px;
}

.login-card {
  background: var(--blanco);
  border-radius: 16px;
  box-shadow: var(--sombra-lg);
  padding: 40px 36px;
  width: 100%; max-width: 380px;
  text-align: center;
}

.login-card .icono {
  width: 56px; height: 56px; margin: 0 auto 16px;
  background: var(--verde-primario);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 24px; font-weight: 700;
}

.login-card h2 { margin: 0 0 4px; font-size: 20px; }
.login-card p.subtitulo { color: var(--gris-suave); margin: 0 0 28px; font-size: 13px; }

/* ---------- Formularios ---------- */
.form-group { margin-bottom: 18px; text-align: left; }
.form-group label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--gris-texto); }

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--gris-borde);
  border-radius: 8px;
  font-size: 14px;
  transition: border-color .15s, box-shadow .15s;
  background: var(--blanco);
  color: var(--gris-texto);
}

.form-control:focus {
  outline: none;
  border-color: var(--verde-primario);
  box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.12);
}

select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 90px; }

.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }

/* ---------- Botones ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: background .15s, transform .1s;
  text-decoration: none;
}
.btn:active { transform: scale(0.98); }

.btn-primary { background: var(--verde-primario); color: white; width: 100%; }
.btn-primary:hover { background: var(--verde-oscuro); color: white; }

.btn-secundario { background: var(--verde-claro); color: var(--verde-oscuro); }
.btn-secundario:hover { background: #bbf7d0; }

.btn-outline { background: transparent; border: 1px solid var(--gris-borde); color: var(--gris-texto); }
.btn-outline:hover { border-color: var(--verde-primario); color: var(--verde-oscuro); }

.btn-peligro { background: var(--rojo-suave); color: var(--rojo); }
.btn-peligro:hover { background: #fecaca; }

.btn-sm { padding: 6px 12px; font-size: 13px; }

/* ---------- Tarjetas / Cards ---------- */
.card {
  background: var(--blanco);
  border-radius: var(--radio);
  border: 1px solid var(--gris-borde);
  box-shadow: var(--sombra);
  padding: 22px;
  margin-bottom: 22px;
}

.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap; gap: 12px;
}

.card-header h2 { font-size: 16px; margin: 0; font-weight: 700; }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  padding: 20px;
  box-shadow: var(--sombra);
}

.stat-card .valor { font-size: 26px; font-weight: 700; color: var(--verde-oscuro); }
.stat-card .etiqueta { font-size: 13px; color: var(--gris-suave); margin-top: 4px; }
.stat-card .icono {
  width: 42px; height: 42px; border-radius: 10px;
  background: var(--verde-claro); color: var(--verde-oscuro);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; margin-bottom: 12px;
}

/* ---------- Tablas ---------- */
.table-wrap { overflow-x: auto; }

table.tabla { width: 100%; border-collapse: collapse; font-size: 14px; }

table.tabla th {
  text-align: left;
  padding: 12px 14px;
  background: var(--verde-suave);
  color: var(--verde-oscuro);
  font-weight: 700;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .03em;
  border-bottom: 1px solid var(--gris-borde);
}

table.tabla td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--gris-borde);
  vertical-align: middle;
}

table.tabla tr:hover td { background: #fafffb; }

.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.badge-verde { background: var(--verde-claro); color: var(--verde-oscuro); }
.badge-rojo { background: var(--rojo-suave); color: var(--rojo); }
.badge-gris { background: #f3f4f6; color: var(--gris-suave); }
.badge-amarillo { background: var(--amarillo-suave); color: var(--amarillo); }

.acciones { display: flex; gap: 8px; }

/* ---------- Alertas ---------- */
.alert {
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 18px;
  font-weight: 500;
}
.alert-success { background: var(--verde-claro); color: var(--verde-oscuro); }
.alert-danger { background: var(--rojo-suave); color: var(--rojo); }
.alert-warning { background: var(--amarillo-suave); color: var(--amarillo); }

/* ---------- Utilidades ---------- */
.texto-suave { color: var(--gris-suave); }
.text-right { text-align: right; }
.mb-0 { margin-bottom: 0; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }

.paginacion { display: flex; gap: 6px; margin-top: 18px; justify-content: flex-end; }
.paginacion a, .paginacion span {
  padding: 6px 12px; border-radius: 6px; font-size: 13px;
  border: 1px solid var(--gris-borde); color: var(--gris-texto);
}
.paginacion a:hover { border-color: var(--verde-primario); color: var(--verde-oscuro); }
.paginacion .activo { background: var(--verde-primario); color: white; border-color: var(--verde-primario); }

/* ---------- Modal simple ---------- */
.modal-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(15, 23, 42, 0.45);
  align-items: center; justify-content: center;
  z-index: 100;
}
.modal-overlay.abierto { display: flex; }
.modal-box {
  background: var(--blanco);
  border-radius: var(--radio);
  padding: 26px;
  width: 100%; max-width: 420px;
  box-shadow: var(--sombra-lg);
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .app-wrapper { flex-direction: column; }
  .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--gris-borde); padding: 12px 0; }
  .sidebar nav { display: flex; overflow-x: auto; }
  .sidebar nav a { border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
  .sidebar nav a.activo { border-left: none; border-bottom-color: var(--verde-primario); }
  .sidebar .logo { border-bottom: none; margin-bottom: 0; }
  .form-row { flex-direction: column; gap: 0; }
  .contenido { padding: 18px; }
}