/* App layout and page scaffolding - TailAdmin Style */
.app-shell {
  display: flex;
  min-height: 100vh;
  background-color: var(--bg-app);
  position: relative;
  overflow: hidden;
}

/* Sidebar - Dark & Bold */
.sidebar {
  width: 280px;
  background-color: var(--bg-sidebar);
  color: var(--text-on-dark);
  /* Ensure text is visible on dark bg */
  padding: var(--space-6) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  position: relative;
  z-index: 50;
  /* High z-index for mobile overlap */
  height: 100vh;
  overflow-y: auto;
  transition: width 0.3s ease;
}

.preload .sidebar,
.preload .sidebar-link,
.preload .icon-btn {
  transition: none !important;
}

[data-sidebar="collapsed"] .sidebar {
  width: 80px;
  padding: var(--space-6) var(--space-2);
}

[data-sidebar="collapsed"] .sidebar .brand,
[data-sidebar="collapsed"] .sidebar .sidebar-label,
[data-sidebar="collapsed"] .sidebar .sidebar-link span {
  display: none;
}

[data-sidebar="collapsed"] .sidebar .sidebar-link {
  justify-content: center;
  padding: 0.75rem;
}

[data-sidebar="collapsed"] .sidebar .sidebar-brand {
  justify-content: center;
  padding: 0;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-4);
  margin-bottom: var(--space-4);
}

.brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  /* Always white on dark sidebar */
  letter-spacing: 0.5px;
}

.sidebar-section {
  display: grid;
  gap: var(--space-2);
}

.sidebar-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  font-weight: 600;
  color: #8a99af;
  /* Muted text for headers on dark */
  margin: 0 0 var(--space-3) var(--space-4);
  /* Align with links */
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 1rem;
  color: #dee4ee;
  /* Off-white for links */
  transition: all 0.2s ease-in-out;
  margin-bottom: 2px;
}

.sidebar-link:hover,
.sidebar-link.active {
  background-color: var(--bg-sidebar-active);
  color: white;
}

.sidebar-icon {
  width: 20px;
  height: 20px;
  opacity: 0.9;
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  /* Prevent horizontal scroll */
}

/* Topbar - Clean White, Sticky */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  /* spacious */
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  /* Extremely subtle shadow */
}

[data-theme="dark"] .topbar {
  background: var(--bg-surface);
  border-bottom-color: var(--border);
}

/* Search Input - Clean & Minimal */
.topbar-search {
  flex: 1;
  max-width: 500px;
  /* Wider search */
  position: relative;
}

.topbar-search svg {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.15rem;
  height: 1.15rem;
  color: var(--text-secondary);
  pointer-events: none;
}

.topbar-search input {
  padding-left: 3rem;
  background-color: transparent !important;
  /* Transparent logic often used in these templates */
  border: none !important;
  font-size: 1rem;
}

.topbar-search input:focus {
  box-shadow: none !important;
  /* No ring on easy searches often */
}

/* Topbar Actions */
.topbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-shrink: 0;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  /* Circle buttons common */
  border: 1px solid var(--border);
  background: var(--bg-app);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.icon-btn:hover {
  background: var(--bg-surface);
  color: var(--primary);
  border-color: var(--primary);
}

.notification-dot {
  position: absolute;
  top: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--danger);
  border: 2px solid var(--bg-surface);
}

/* Content Area */
.app-content {
  padding: var(--space-6) var(--space-8);
  display: grid;
  gap: var(--space-6);
  max-width: 1600px;
  /* prevent ultra-wide stretch */
  margin: 0 auto;
  width: 100%;
}

.page-header {
  display: flex;
  align-items: flex-end;
  /* Align actions to bottom of title */
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}

.page-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.page-subtitle {
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Chart & Empty State Placeholders */
.chart-placeholder {
  min-height: 240px;
  background: linear-gradient(180deg, var(--bg-app) 0%, var(--bg-surface) 100%);
  border: 1px dashed var(--border-dark);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  font-size: 0.9rem;
  gap: var(--space-3);
  position: relative;
  overflow: hidden;
}

.chart-placeholder::before {
  content: "";
  width: 48px;
  height: 48px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8' %3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 01-2 2h-2a2 2 0 01-2-2z' /%3E%3C/svg%3E");
  background-repeat: no-repeat;
  opacity: 0.5;
}

/* Grid & Cards */
.grid-2 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: repeat(4, minmax(0, 1fr));
}


.avatar-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.5rem 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  cursor: pointer;
  transition: all 0.2s;
}

.avatar-btn:hover,
.avatar-btn[aria-expanded="true"] {
  background-color: var(--bg-app);
  border-color: var(--primary-light);
}

.avatar {
  background-color: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  font-size: 0.85rem;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(60, 80, 224, 0.1);
}

.avatar-menu {
  position: relative;
}

.avatar-dropdown {
  position: absolute;
  right: 0;
  top: 120%;
  /* Add spacing below button */
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  min-width: 200px;
  padding: var(--space-2);
  box-shadow: var(--shadow-lg);
  display: none;
  flex-direction: column;
  /* Ensure vertical stack */
  z-index: 100;
}

.avatar-dropdown.open {
  display: flex !important;
  /* Force flex display when open */
}

/* Styling for items inside dropdown */
.avatar-dropdown a,
.avatar-dropdown button {
  display: flex;
  /* Block level for full width click */
  align-items: center;
  width: 100%;
  background: transparent;
  border: none;
  text-align: left;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.avatar-dropdown a:hover,
.avatar-dropdown button:hover {
  background: var(--bg-app);
  color: var(--primary);
}

/* KPI Cards specifically */
.kpi-card {
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: transform 0.2s;
}

.kpi-card:hover {
  transform: translateY(-3px);
}

.kpi-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: var(--space-1) 0;
}

/* Responsive */
@media (max-width: 1024px) {
  .sidebar {
    width: 230px;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .app-shell {
    /* Dejar display: flex pero permitir que el contenido ocupe todo el ancho */
    display: block;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .app-content {
    padding: var(--space-4);
  }

  /* Mobile Drawer Sidebar */
  .sidebar {
    display: flex !important;
    /* Asegurar que sea visible dentro del drawer */
    position: fixed;
    top: 0;
    left: -280px;
    /* Esconder a la izquierda */
    width: 280px;
    height: 100vh;
    z-index: 1000;
    transition: left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-xl);
    flex-direction: column;
  }

  [data-sidebar="open"] .sidebar {
    left: 0;
  }

  /* Sidebar Overlay */
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  [data-sidebar="open"] .sidebar-overlay {
    display: block;
    opacity: 1;
  }

  .mobile-menu-btn {
    display: flex !important;
  }

  /* Topbar Responsive Optimization */
  .topbar {
    padding: var(--space-3) var(--space-4);
    gap: var(--space-2);
  }

  .topbar-search {
    max-width: none;
    flex: 1;
  }

  .topbar-search input {
    padding-left: 2.5rem;
    font-size: 0.875rem;
  }

  .topbar-search svg {
    left: 0.75rem;
    width: 1rem;
    height: 1rem;
  }

  .topbar-actions {
    gap: var(--space-2);
  }

  /* Ocultar elementos no críticos en mobile */
  .topbar-actions .icon-btn:not([data-theme-toggle]):not([data-mobile-toggle]) {
    display: none;
  }

  /* Ajuste para el avatar */
  .avatar-btn {
    padding: 0.25rem;
    border: none;
    background: transparent;
  }

  .avatar-btn svg {
    display: none;
    /* Hide chevron on mobile */
  }
}

.mobile-menu-btn {
  display: none;
}

.sidebar-overlay {
  display: none;
}

/* Auth Shell (Login) */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-app);
  padding: var(--space-4);
}

.auth-card {
  width: 100%;
  max-width: 450px;
  background: var(--bg-surface);
  padding: 3rem;
  border-radius: var(--radius-sm);
  /* Flat look */
  box-shadow: var(--shadow-xl);
}

.auth-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  text-align: center;
}

.auth-meta {
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--space-6);
  font-size: 0.95rem;
}

.auth-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: var(--space-4);
  color: var(--primary);
}

/* Alerts */
.alert {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.alert-error {
  background-color: var(--danger-bg);
  color: var(--danger);
  border: 1px solid rgba(211, 64, 83, 0.2);
}

.alert-success {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(33, 150, 83, 0.2);
}