:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #DBEAFE;
  --success: #16A34A;
  --success-light: #DCFCE7;
  --warning: #D97706;
  --warning-light: #FEF3C7;
  --danger: #DC2626;
  --danger-light: #FEE2E2;
  --info: #0891B2;
  --info-light: #CFFAFE;

  --bg: #F1F5F9;
  --surface: #FFFFFF;
  --surface-2: #F8FAFC;
  --border: #E2E8F0;
  --border-hover: #CBD5E1;

  --text: #0F172A;
  --text-2: #475569;
  --text-3: #94A3B8;

  --sidebar-w: 260px;
  --sidebar-collapsed: 68px;
  --topbar-h: 60px;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.08);
  --transition: .2s ease;
}

[data-theme="dark"] {
  --bg: #0F172A;
  --surface: #1E293B;
  --surface-2: #263044;
  --border: #334155;
  --border-hover: #475569;
  --text: #F1F5F9;
  --text-2: #94A3B8;
  --text-3: #64748B;
  --primary-light: #1E3A5F;
  --shadow: 0 1px 3px rgba(0,0,0,.3);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.3);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.3);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

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

.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}

.app-layout.sidebar-collapsed .main-content { margin-left: var(--sidebar-collapsed); }

.page-body { padding: 24px; flex: 1; }

/* ─── Sidebar ────────────────────────────────────────────────────────────── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  position: fixed;
  top: 0; left: 0; bottom: 0;
  display: flex;
  flex-direction: column;
  transition: width var(--transition);
  z-index: 100;
  overflow: hidden;
}

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

.sidebar-logo {
  height: var(--topbar-h);
  display: flex;
  align-items: center;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
  gap: 10px;
  flex-shrink: 0;
}

.sidebar-logo .logo-icon {
  width: 32px; height: 32px;
  background: var(--primary);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 16px;
  flex-shrink: 0;
}

.sidebar-logo .logo-text {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  white-space: nowrap;
  opacity: 1;
  transition: opacity var(--transition);
}

.app-layout.sidebar-collapsed .sidebar-logo .logo-text { opacity: 0; width: 0; }

.sidebar-nav { flex: 1; overflow-y: auto; padding: 12px 0; }

.nav-section-title {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-3);
  padding: 12px 18px 4px;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition);
}

.app-layout.sidebar-collapsed .nav-section-title { opacity: 0; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px;
  color: var(--text-2);
  border-radius: 0;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
  position: relative;
  text-decoration: none;
  font-size: .9rem;
}

.nav-item:hover, .nav-item.active {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-item.active { font-weight: 600; }

.nav-item svg { flex-shrink: 0; width: 18px; height: 18px; }

.nav-item .nav-label {
  opacity: 1;
  transition: opacity var(--transition);
  white-space: nowrap;
}

.nav-submenu {
  display: none;
  flex-direction: column;
  padding-left: 12px;
  overflow: hidden;
}
.nav-submenu.open { display: flex; }

.nav-subitem {
  font-size: .85rem;
  padding: 6px 12px 6px 10px;
}

.nav-item-parent.open .nav-chevron {
  transform: rotate(90deg);
}

.app-layout.sidebar-collapsed .nav-item .nav-label { opacity: 0; width: 0; overflow: hidden; }

/* Tooltip no modo collapsed */
.app-layout.sidebar-collapsed .nav-item:hover::after {
  content: attr(data-label);
  position: absolute;
  left: calc(var(--sidebar-collapsed) + 8px);
  background: var(--text);
  color: var(--surface);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: .8rem;
  white-space: nowrap;
  z-index: 200;
  pointer-events: none;
}

.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 12px;
  flex-shrink: 0;
}

/* ─── Topbar ─────────────────────────────────────────────────────────────── */
.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 12px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.topbar-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-2);
  display: flex;
  align-items: center;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: background var(--transition);
}

.topbar-toggle:hover { background: var(--bg); }

.topbar-breadcrumb {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--text-3);
}

.topbar-breadcrumb a { color: var(--text-2); }
.topbar-breadcrumb .current { color: var(--text); font-weight: 500; }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-2);
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition);
}

.btn-icon:hover { background: var(--bg); color: var(--text); }

.avatar {
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
  font-size: .85rem;
  cursor: pointer;
  flex-shrink: 0;
}

/* ─── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
}

.card-body { padding: 20px; }

.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

/* Stat Cards */
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.stat-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}

.stat-icon.primary { background: var(--primary-light); color: var(--primary); }
.stat-icon.success { background: var(--success-light); color: var(--success); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }
.stat-icon.danger  { background: var(--danger-light);  color: var(--danger); }

.stat-value { font-size: 1.6rem; font-weight: 700; color: var(--text); line-height: 1.2; }
.stat-label { font-size: .8rem; color: var(--text-2); margin-top: 2px; }

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1.4;
}

.btn:disabled { opacity: .6; cursor: not-allowed; }

.btn-primary  { background: var(--primary);  color: #fff; border-color: var(--primary); }
.btn-primary:hover  { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; }

.btn-success  { background: var(--success);  color: #fff; border-color: var(--success); }
.btn-success:hover  { background: #15803D; color: #fff; }

.btn-danger   { background: var(--danger);   color: #fff; border-color: var(--danger); }
.btn-danger:hover   { background: #B91C1C; color: #fff; }

.btn-warning  { background: var(--warning);  color: #fff; border-color: var(--warning); }

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

.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }

.btn-sm { padding: 5px 10px; font-size: .8rem; }
.btn-lg { padding: 10px 22px; font-size: 1rem; }

/* ─── Forms ──────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 18px; }
.form-row { display: grid; gap: 16px; }
.form-row-2 { grid-template-columns: 1fr 1fr; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.form-row-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }

label {
  display: block;
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 5px;
}

label .required { color: var(--danger); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  font-size: .875rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  font-family: inherit;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.form-control.error { border-color: var(--danger); }
.form-control.error:focus { box-shadow: 0 0 0 3px rgba(220,38,38,.12); }

textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; }

.form-text { font-size: .75rem; color: var(--text-3); margin-top: 4px; }
.form-error { font-size: .75rem; color: var(--danger); margin-top: 4px; display: flex; align-items: center; gap: 4px; }

/* ─── Tables ─────────────────────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: .875rem; }

thead th {
  padding: 10px 14px;
  text-align: left;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-3);
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}

tbody tr:hover { background: var(--surface-2); }
tbody tr:last-child { border-bottom: none; }

tbody td { padding: 10px 14px; color: var(--text); vertical-align: middle; }

/* ─── Badges ─────────────────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 999px;
  font-size: .72rem;
  font-weight: 600;
}

.badge-primary { background: var(--primary-light); color: var(--primary); }
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger  { background: var(--danger-light);  color: var(--danger); }
.badge-info    { background: var(--info-light);    color: var(--info); }
.badge-gray    { background: var(--surface-2);     color: var(--text-2); }

/* ─── Alerts / Flash ─────────────────────────────────────────────────────── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
  margin-bottom: 16px;
}

.alert-success { background: var(--success-light); color: #14532D; border-left: 4px solid var(--success); }
.alert-error   { background: var(--danger-light);  color: #7F1D1D; border-left: 4px solid var(--danger); }
.alert-warning { background: var(--warning-light); color: #78350F; border-left: 4px solid var(--warning); }
.alert-info    { background: var(--info-light);    color: #164E63; border-left: 4px solid var(--info); }

/* ─── Page Header ────────────────────────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title { font-size: 1.4rem; font-weight: 700; color: var(--text); }
.page-subtitle { font-size: .85rem; color: var(--text-2); margin-top: 2px; }

/* ─── Pagination ─────────────────────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 12px 0;
  justify-content: flex-end;
}

.page-link {
  display: flex; align-items: center; justify-content: center;
  width: 34px; height: 34px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .85rem;
  color: var(--text-2);
  background: var(--surface);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.page-link:hover { border-color: var(--primary); color: var(--primary); }
.page-link.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.page-link:disabled, .page-link.disabled { opacity: .4; cursor: not-allowed; }

/* ─── Modal ──────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  backdrop-filter: blur(2px);
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: modalIn .2s ease;
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(-16px) scale(.97); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title { font-weight: 600; font-size: 1rem; }
.modal-body  { padding: 20px; overflow-y: auto; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ─── Toast ──────────────────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 24px; right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 360px;
}

.toast {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
  animation: toastIn .3s ease;
  border-left: 4px solid var(--primary);
}

.toast.success { border-left-color: var(--success); }
.toast.error   { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--warning); }

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

/* ─── Search Bar ─────────────────────────────────────────────────────────── */
.search-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 12px;
  transition: border-color var(--transition);
}

.search-bar:focus-within { border-color: var(--primary); }
.search-bar input { border: none; background: none; outline: none; padding: 8px 0; font-size: .875rem; color: var(--text); width: 100%; }
.search-bar svg { color: var(--text-3); flex-shrink: 0; }

/* ─── Dropdown ───────────────────────────────────────────────────────────── */
.dropdown { position: relative; display: inline-flex; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  min-width: 180px;
  z-index: 150;
  overflow: hidden;
  animation: dropIn .15s ease;
}

@keyframes dropIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  font-size: .875rem;
  color: var(--text-2);
  cursor: pointer;
  transition: background var(--transition);
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  text-decoration: none;
}

.dropdown-item:hover { background: var(--surface-2); color: var(--text); }
.dropdown-item.danger:hover { background: var(--danger-light); color: var(--danger); }
.dropdown-divider { border-top: 1px solid var(--border); margin: 4px 0; }

/* ─── Tabs ───────────────────────────────────────────────────────────────── */
.tabs { display: flex; border-bottom: 1px solid var(--border); margin-bottom: 20px; gap: 0; }

.tab-item {
  padding: 10px 18px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-2);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.tab-item:hover { color: var(--primary); }
.tab-item.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ─── Utilities ──────────────────────────────────────────────────────────── */
.text-right  { text-align: right; }
.text-center { text-align: center; }
.text-muted  { color: var(--text-2); }
.text-small  { font-size: .8rem; }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-warning { color: var(--warning); }
.fw-600  { font-weight: 600; }
.fw-700  { font-weight: 700; }
.d-flex  { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8  { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-4   { margin-top: 4px; }
.mt-8   { margin-top: 8px; }
.mt-16  { margin-top: 16px; }
.mt-24  { margin-top: 24px; }
.mb-16  { margin-bottom: 16px; }
.mb-24  { margin-bottom: 24px; }
.p-0    { padding: 0 !important; }
.w-100  { width: 100%; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ─── Loading Spinner ────────────────────────────────────────────────────── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}

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

/* ─── Empty State ────────────────────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-2);
}

.empty-state svg { margin: 0 auto 12px; opacity: .4; }
.empty-state p { font-size: .9rem; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform var(--transition); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0 !important; }
  .form-row-2, .form-row-3, .form-row-4 { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .page-header { flex-direction: column; align-items: flex-start; }
}

/* ─── Print ──────────────────────────────────────────────────────────────── */
@media print {
  .sidebar, .topbar, .btn, .pagination { display: none !important; }
  .main-content { margin: 0 !important; }
  body { background: #fff; color: #000; }
}

.search-bar.select-filter {
  min-width: 220px;
  padding-right: 10px;
}

.search-bar.select-filter select {
  border: none;
  background: transparent;
  outline: none;
  width: 100%;
  padding: 8px 0;
  font-size: .875rem;
  color: var(--text);
  cursor: pointer;
  appearance: none;
}

.search-bar.select-filter svg {
  color: var(--text-3);
}

.toggle-switch { position:relative;display:inline-block;width:42px;height:24px;vertical-align:middle; }
.toggle-switch input { opacity:0;width:0;height:0; }
.toggle-slider { position:absolute;cursor:pointer;inset:0;background:var(--border);border-radius:24px;transition:.3s; }
.toggle-slider:before { position:absolute;content:"";width:18px;height:18px;left:3px;bottom:3px;background:#fff;border-radius:50%;transition:.3s; }
.toggle-switch input:checked + .toggle-slider { background:var(--primary); }
.toggle-switch input:checked + .toggle-slider:before { transform:translateX(18px); }