/* =========================================================
   VetAdmin — layout.css
   App shell, sidebar, topbar, estructura de página
   ========================================================= */

/* ---- Auth shell ---- */
.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
  padding: var(--space-6);
}

/* ---- App shell: grid sidebar + main ---- */
.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
  transition: grid-template-columns var(--transition-slow);
}

.app-shell.sidebar-collapsed {
  grid-template-columns: var(--sidebar-width-collapsed) 1fr;
}

/* ---- Sidebar ---- */
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sidebar-border);
  overflow: hidden;
  z-index: 100;
  transition: width var(--transition-slow);
  width: var(--sidebar-width);
}

.app-shell.sidebar-collapsed .sidebar {
  width: var(--sidebar-width-collapsed);
}

/* Header del sidebar */
.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-4) var(--space-3);
  border-bottom: 1px solid var(--sidebar-border);
  min-height: 60px;
  flex-shrink: 0;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  overflow: hidden;
  min-width: 0;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity var(--transition-normal), max-width var(--transition-slow);
}

.app-shell.sidebar-collapsed .sidebar-brand {
  opacity: 0;
  max-width: 0;
  pointer-events: none;
}

.brand-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--sidebar-text-active);
  letter-spacing: -0.01em;
}

.brand-tenant {
  font-size: 0.72rem;
  color: var(--sidebar-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 150px;
}

.sidebar-toggle {
  color: var(--sidebar-text);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.sidebar-toggle:hover { color: var(--sidebar-text-active); background: var(--sidebar-item-hover); }
.app-shell.sidebar-collapsed .sidebar-toggle svg { transform: rotate(180deg); }

/* Navegación del sidebar */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--space-3) 0;
}

.nav-section {
  margin-bottom: var(--space-4);
}

.nav-section-label {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sidebar-text);
  opacity: 0.5;
  padding: 0 var(--space-4);
  margin-bottom: var(--space-1);
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition-normal);
}

.app-shell.sidebar-collapsed .nav-section-label {
  opacity: 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  color: var(--sidebar-text);
  font-size: 0.875rem;
  font-weight: 400;
  border-radius: 0;
  transition: background var(--transition-fast), color var(--transition-fast);
  position: relative;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
}

.nav-item:hover {
  background: var(--sidebar-item-hover);
  color: var(--sidebar-text-active);
}

.nav-item.active {
  background: var(--sidebar-item-active);
  color: var(--sidebar-text-active);
  font-weight: 500;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 3px;
  background: var(--color-primary);
  border-radius: 0 3px 3px 0;
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.8;
}

.nav-item.active .nav-icon,
.nav-item:hover .nav-icon { opacity: 1; }

.nav-label {
  overflow: hidden;
  text-overflow: ellipsis;
  transition: opacity var(--transition-normal), max-width var(--transition-slow);
}

.app-shell.sidebar-collapsed .nav-label {
  opacity: 0;
  max-width: 0;
  pointer-events: none;
}

.nav-badge {
  margin-left: auto;
  background: var(--color-primary);
  color: white;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
  transition: opacity var(--transition-normal);
}

.app-shell.sidebar-collapsed .nav-badge { opacity: 0; }

/* Tooltips en sidebar colapsado */
.app-shell.sidebar-collapsed .nav-item:hover::after {
  content: attr(data-label);
  position: absolute;
  left: calc(var(--sidebar-width-collapsed) + 8px);
  background: var(--gray-800);
  color: white;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  z-index: 200;
  box-shadow: var(--shadow-md);
  pointer-events: none;
}

/* Footer del sidebar */
.sidebar-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--sidebar-border);
  padding: var(--space-3) var(--space-4);
  position: relative;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
  border-radius: var(--radius-md);
  padding: var(--space-2);
  transition: background var(--transition-fast);
}

.user-chip:hover { background: var(--sidebar-item-hover); }

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
  flex-shrink: 0;
}

.user-info {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: opacity var(--transition-normal), max-width var(--transition-slow);
}

.app-shell.sidebar-collapsed .user-info {
  opacity: 0;
  max-width: 0;
  pointer-events: none;
}

.user-name {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--sidebar-text-active);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 0.7rem;
  color: var(--sidebar-text);
  white-space: nowrap;
}

.btn-icon {
  color: var(--sidebar-text);
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.btn-icon:hover { color: var(--sidebar-text-active); background: var(--sidebar-item-hover); }

.user-dropdown {
  position: absolute;
  bottom: calc(100% + 4px);
  left: var(--space-4);
  right: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border-md);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  z-index: 200;
}

.dropdown-item {
  display: block;
  width: 100%;
  text-align: left;
  padding: var(--space-2) var(--space-4);
  font-size: 0.85rem;
  color: var(--color-text-2);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.dropdown-item:hover { background: var(--color-surface-2); color: var(--color-text-1); }
.dropdown-item.danger { color: var(--color-danger); }
.dropdown-item.danger:hover { background: var(--color-danger-soft); }

/* ---- Main wrapper ---- */
.main-wrapper {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ---- Topbar ---- */
.topbar {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-6);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 90;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.mobile-menu-btn { display: none; color: var(--color-text-2); }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.85rem;
}

.breadcrumb-item { color: var(--color-text-3); }
.breadcrumb-item:last-child { color: var(--color-text-1); font-weight: 500; }
.breadcrumb-sep { color: var(--color-text-3); font-size: 0.75rem; }

/* Search trigger */
.search-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-3);
  font-size: 0.83rem;
  cursor: pointer;
  width: 220px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-trigger:hover {
  border-color: var(--color-border-md);
  box-shadow: var(--shadow-sm);
}

.search-trigger span { flex: 1; }
.search-trigger kbd { margin-left: auto; }

/* Notificaciones */
.notif-btn {
  position: relative;
  color: var(--color-text-2);
  cursor: pointer;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  display: flex;
}

.notif-btn:hover { color: var(--color-text-1); background: var(--color-surface-2); }

.notif-badge {
  position: absolute;
  top: 2px; right: 2px;
  background: var(--color-danger);
  color: white;
  font-size: 0.6rem;
  font-weight: 600;
  width: 16px; height: 16px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--color-surface);
}

/* ---- Page content ---- */
.page-content {
  flex: 1;
  padding: var(--space-6) var(--space-8);
  max-width: 1400px;
  width: 100%;
}

/* Page header (usado en cada módulo) */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
}

.page-header-left h1 {
  font-size: 1.5rem;
  color: var(--color-text-1);
}

.page-header-left p {
  margin-top: 2px;
  font-size: 0.875rem;
  color: var(--color-text-3);
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Loading state */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 300px;
  gap: var(--space-4);
  color: var(--color-text-3);
}

.spinner {
  width: 28px;
  height: 28px;
  border: 2.5px solid var(--color-border-md);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ---- Search modal ---- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 80px;
  z-index: 1000;
  animation: fade-in var(--transition-fast);
}

@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

.search-modal-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border-md);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 580px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  animation: slide-down var(--transition-normal);
}

@keyframes slide-down {
  from { transform: translateY(-12px); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

.search-modal-input-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-3);
}

#search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 1rem;
  color: var(--color-text-1);
  background: transparent;
}

.search-results {
  max-height: 400px;
  overflow-y: auto;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-result-item:hover { background: var(--color-surface-2); }

.search-result-icon {
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-surface-2);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-3);
  flex-shrink: 0;
}

.search-result-main { font-size: 0.875rem; font-weight: 500; color: var(--color-text-1); }
.search-result-sub  { font-size: 0.78rem; color: var(--color-text-3); }
.search-result-type { margin-left: auto; }

.search-empty {
  padding: var(--space-8) var(--space-5);
  text-align: center;
  color: var(--color-text-3);
  font-size: 0.875rem;
}

/* ---- Confirm dialog ---- */
.confirm-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border-md);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  max-width: 400px;
  width: 100%;
  box-shadow: var(--shadow-xl);
}

.confirm-box h3 { margin-bottom: var(--space-2); }
.confirm-box p  { font-size: 0.875rem; }

.confirm-actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  margin-top: var(--space-5);
}

/* ---- Toast notifications ---- */
.toast-container {
  position: fixed;
  bottom: var(--space-5);
  right: var(--space-5);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-surface);
  border: 1px solid var(--color-border-md);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-lg);
  font-size: 0.875rem;
  color: var(--color-text-1);
  min-width: 280px;
  max-width: 380px;
  animation: toast-in var(--transition-normal);
}

@keyframes toast-in {
  from { transform: translateX(20px); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}

.toast.out {
  animation: toast-out var(--transition-normal) forwards;
}

@keyframes toast-out {
  to { transform: translateX(20px); opacity: 0; }
}

.toast-icon { flex-shrink: 0; }
.toast.success .toast-icon { color: var(--color-success); }
.toast.error   .toast-icon { color: var(--color-danger);  }
.toast.warning .toast-icon { color: var(--color-warning); }
.toast.info    .toast-icon { color: var(--color-info);    }

.toast-close {
  margin-left: auto;
  color: var(--color-text-3);
  padding: 2px;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.toast-close:hover { color: var(--color-text-1); background: var(--color-surface-2); }

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    left: -100%;
    top: 0; bottom: 0;
    width: var(--sidebar-width) !important;
    z-index: 200;
    transition: left var(--transition-slow);
  }

  .sidebar.mobile-open {
    left: 0;
  }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 190;
    display: none;
  }

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

  .mobile-menu-btn { display: flex; }
  .search-trigger  { width: auto; }
  .search-trigger span, .search-trigger kbd { display: none; }

  .page-content { padding: var(--space-4) var(--space-4); }
  .page-header  { flex-direction: column; }
}