:root {
  --admin-sidebar-width: 260px;
  --admin-topbar-height: 70px;
  --admin-bg-base: #FAF8F5;
  --admin-bg-surface: #FFFFFF;
  --admin-bg-soft: #F4EFEA;
  --admin-bg-sidebar: #141414;
  --admin-sidebar-hover: #222222;
  --admin-sidebar-active: #2A2624;
  --admin-accent: #C85A32;
  --admin-text-title: #121212;
  --admin-text-body: #333333;
  --admin-text-muted: #6B6763;
  --admin-text-light: #F4EFEA;
  --admin-text-dim: #9E9A96;
  --admin-border: #E5DFD7;
  --admin-border-dark: #2C2A28;
  --admin-success: #2E7D32;
  --admin-radius-sm: 6px;
  --admin-radius-md: 12px;
  --admin-radius-pill: 50px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.admin-layout {
  display: flex;
  min-height: 100vh;
  width: 100%;
  background-color: var(--admin-bg-base);
  position: relative;
}

/* --- SIDEBAR LATERAL IZQUIERDA --- */
.admin-sidebar {
  width: var(--admin-sidebar-width);
  background-color: var(--admin-bg-sidebar);
  color: var(--admin-text-light);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  border-right: 1px solid var(--admin-border-dark);
  transition: transform var(--transition-normal);
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.sidebar-header {
  height: var(--admin-topbar-height);
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--admin-border-dark);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
}

.brand-badge {
  background: var(--admin-accent);
  color: #FFFFFF;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 0.2rem 0.45rem;
  border-radius: var(--admin-radius-sm);
}

.brand-text {
  font-size: 1.35rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.5px;
}

.close-sidebar-btn {
  display: none;
  background: none;
  border: none;
  color: var(--admin-text-dim);
  padding: 0.25rem;
  cursor: pointer;
  border-radius: var(--admin-radius-sm);
}

.close-sidebar-btn svg {
  width: 20px;
  height: 20px;
}

.sidebar-nav {
  flex: 1;
  padding: 1.5rem 1rem;
  overflow-y: auto;
}

.nav-section-title {
  display: block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--admin-text-dim);
  padding: 0 0.75rem 0.65rem;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav-link {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 0.85rem;
  border-radius: var(--admin-radius-md);
  color: var(--admin-text-dim);
  font-size: 0.92rem;
  font-weight: 500;
  background: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: left;
  position: relative;
}

.nav-link .nav-icon {
  width: 19px;
  height: 19px;
  stroke-width: 1.8;
  color: var(--admin-text-dim);
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.nav-link:hover {
  background-color: var(--admin-sidebar-hover);
  color: #FFFFFF;
}

.nav-link:hover .nav-icon {
  color: #FFFFFF;
}

.nav-link.active {
  background-color: var(--admin-sidebar-active);
  color: #FFFFFF;
  font-weight: 600;
}

.nav-link.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 15%;
  bottom: 15%;
  width: 3.5px;
  background-color: var(--admin-accent);
  border-radius: 0 4px 4px 0;
}

.nav-link.active .nav-icon {
  color: var(--admin-accent);
}

.badge-counter {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--admin-radius-pill);
  background-color: rgba(200, 90, 50, 0.2);
  color: var(--admin-accent);
}

/* Sidebar Footer */
.sidebar-footer {
  padding: 1.25rem 1rem;
  border-top: 1px solid var(--admin-border-dark);
  background-color: rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.user-profile-widget {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--admin-accent), #C5A059);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.user-details {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.user-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: #FFFFFF;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
}

.user-role {
  font-size: 0.72rem;
  color: var(--admin-text-dim);
}

.sidebar-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.sidebar-action-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--admin-radius-sm);
  background-color: var(--admin-sidebar-hover);
  color: var(--admin-text-dim);
  font-size: 0.78rem;
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.sidebar-action-btn svg {
  width: 14px;
  height: 14px;
}

.sidebar-action-btn:hover {
  background-color: #2E2E2E;
  color: #FFFFFF;
}

.sidebar-action-btn.logout-action:hover {
  background-color: rgba(211, 47, 47, 0.15);
  color: #FF6B6B;
}

/* Backdrop para mobile */
.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(2px);
  z-index: 90;
}

.sidebar-backdrop.backdrop-active {
  display: block;
}

/* --- ÁREA PRINCIPAL --- */
.admin-main {
  flex: 1;
  margin-left: var(--admin-sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  transition: margin var(--transition-normal);
}

/* TOPBAR HEADER */
.admin-topbar {
  height: calc(var(--admin-topbar-height) + env(safe-area-inset-top, 0px));
  background-color: var(--admin-bg-surface);
  border-bottom: 1px solid var(--admin-border);
  padding: env(safe-area-inset-top, 0px) 2rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 80;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle-btn {
  display: none;
  padding: 0.4rem;
  color: var(--admin-text-body);
  border-radius: var(--admin-radius-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle-btn svg {
  width: 22px;
  height: 22px;
}

.topbar-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
}

.breadcrumb-root {
  color: var(--admin-text-muted);
}

.breadcrumb-separator {
  color: var(--admin-border);
}

.breadcrumb-active {
  font-weight: 600;
  color: var(--admin-text-title);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.system-status {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--admin-bg-soft);
  padding: 0.35rem 0.85rem;
  border-radius: var(--admin-radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--admin-text-body);
  border: 1px solid var(--admin-border);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--admin-success);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.2);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.header-user {
  font-size: 0.9rem;
  color: var(--admin-text-body);
}

.header-user strong {
  color: var(--admin-text-title);
}

/* ÁREA DE CONTENIDO */
.admin-content-area {
  flex: 1;
  padding: 2.25rem 2.5rem;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.content-view {
  display: none;
  animation: fadeInContent 0.35s ease-out;
}

.content-view.active {
  display: block;
}

@keyframes fadeInContent {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.admin-footer {
  padding: 1.5rem 2.5rem;
  border-top: 1px solid var(--admin-border);
  text-align: center;
  font-size: 0.82rem;
  color: var(--admin-text-muted);
  background-color: var(--admin-bg-surface);
}

/* Responsive móvil y tablet */
@media (max-width: 860px) {
  .admin-sidebar {
    transform: translateX(-100%);
  }

  .admin-sidebar.sidebar-open {
    transform: translateX(0);
  }

  .close-sidebar-btn {
    display: block;
  }

  .admin-main {
    margin-left: 0;
  }

  .menu-toggle-btn {
    display: block;
  }

  .admin-topbar {
    padding: 0 1.25rem;
  }

  .admin-content-area {
    padding: 1.5rem 1.25rem;
  }
}