/* ================================================================================
   SISTEMA COMPLETO DE DISEÑO 3D PARA ADMINISTRACIÓN
   Framework CSS con efectos de profundidad integrados sutilmente
   ================================================================================ */

/* ================================================================================
   VARIABLES GLOBALES Y TEMA
   ================================================================================ */
:root {
    /* === COLORES PRINCIPALES === */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --primary-lighter: #60a5fa;
    
    --secondary: #64748b;
    --secondary-dark: #475569;
    --secondary-light: #94a3b8;
    
    --success: #10b981;
    --success-dark: #059669;
    --success-light: #34d399;
    
    --danger: #ef4444;
    --danger-dark: #dc2626;
    --danger-light: #f87171;
    
    --warning: #f59e0b;
    --warning-dark: #d97706;
    --warning-light: #fbbf24;
    
    --info: #0ea5e9;
    --info-dark: #0284c7;
    --info-light: #38bdf8;
    
    /* === SUPERFICIES Y FONDOS === */
    --surface: #ffffff;
    --surface-hover: #f8fafc;
    --surface-elevated: #ffffff;
    --background: #f1f5f9;
    --background-alt: #e2e8f0;
    
    /* === BORDES === */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --border-dark: #cbd5e1;
    --border-focus: #3b82f6;
    
    /* === TEXTO === */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --text-disabled: #94a3b8;
    --text-placeholder: #cbd5e1;
    --text-inverse: #ffffff;
    
    /* === SOMBRAS 3D === */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.03);
    --shadow-base: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 6px 12px rgba(0, 0, 0, 0.08), 0 3px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.12), 0 8px 16px rgba(0, 0, 0, 0.08);
    --shadow-2xl: 0 30px 60px rgba(0, 0, 0, 0.15), 0 12px 24px rgba(0, 0, 0, 0.10);
    --shadow-inner: inset 0 2px 4px rgba(0, 0, 0, 0.06);
    
    /* === ELEVACIONES === */
    --elevation-0: none;
    --elevation-1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.08);
    --elevation-2: 0 3px 6px rgba(0, 0, 0, 0.15), 0 2px 4px rgba(0, 0, 0, 0.10);
    --elevation-3: 0 10px 20px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.10);
    --elevation-4: 0 15px 30px rgba(0, 0, 0, 0.20), 0 5px 10px rgba(0, 0, 0, 0.12);
    --elevation-5: 0 20px 40px rgba(0, 0, 0, 0.25), 0 8px 16px rgba(0, 0, 0, 0.15);
    
    /* === ESPACIADO === */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* === RADIOS DE BORDE === */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* === TRANSICIONES === */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* === SIDEBAR === */
    --sidebar-width: 280px;
    --sidebar-collapsed-width: 80px;
    
    /* === HEADER === */
    --header-height: 70px;
    
    /* === Z-INDEX === */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
}

/* ================================================================================
   RESET Y BASE
   ================================================================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background);
    overflow-x: hidden;
}

/* ================================================================================
   LAYOUT PRINCIPAL - SIDEBAR + CONTENT
   ================================================================================ */
.admin-layout {
    display: flex;
    min-height: 100vh;
    background-color: var(--background);
}

/* === SIDEBAR === */
.admin-sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
    color: var(--text-inverse);
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    box-shadow: var(--elevation-3);
    z-index: var(--z-fixed);
    transition: width var(--transition-base), transform var(--transition-base);
    transform: translateZ(0);
}

.admin-sidebar::-webkit-scrollbar {
    width: 6px;
}

.admin-sidebar::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.admin-sidebar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
}

.admin-sidebar::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Sidebar colapsado */
.admin-sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.admin-sidebar.collapsed .sidebar-text,
.admin-sidebar.collapsed .sidebar-badge,
.admin-sidebar.collapsed .sidebar-arrow {
    opacity: 0;
    visibility: hidden;
}

/* Logo del sidebar */
.sidebar-logo {
    padding: var(--spacing-xl) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo-icon {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    box-shadow: var(--elevation-2);
    flex-shrink: 0;
}

.sidebar-logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    white-space: nowrap;
    transition: opacity var(--transition-fast);
}

/* Navegación del sidebar */
.sidebar-nav {
    padding: var(--spacing-lg) 0;
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
}

.sidebar-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.5);
    padding: var(--spacing-sm) var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    transition: opacity var(--transition-fast);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-item {
    position: relative;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
    cursor: pointer;
}

.sidebar-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 0;
    background: var(--primary);
    border-radius: 0 4px 4px 0;
    transition: height var(--transition-fast);
}

.sidebar-link:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-inverse);
}

.sidebar-link:hover::before {
    height: 70%;
}

.sidebar-link.active {
    background: rgba(37, 99, 235, 0.15);
    color: var(--text-inverse);
    font-weight: 600;
}

.sidebar-link.active::before {
    height: 100%;
}

.sidebar-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.sidebar-link:hover .sidebar-icon {
    transform: scale(1.1);
}

.sidebar-text {
    flex: 1;
    white-space: nowrap;
    transition: opacity var(--transition-fast);
}

.sidebar-badge {
    padding: 0.125rem 0.5rem;
    background: var(--danger);
    color: white;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    transition: opacity var(--transition-fast);
}

.sidebar-arrow {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.sidebar-link[aria-expanded="true"] .sidebar-arrow {
    transform: rotate(90deg);
}

/* Submenu */
.sidebar-submenu {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.sidebar-submenu.open {
    max-height: 500px;
}

.sidebar-submenu .sidebar-link {
    padding-left: 3.5rem;
    font-size: 0.9375rem;
}

/* Botón de colapsar sidebar */
.sidebar-toggle {
    position: absolute;
    right: -15px;
    top: 80px;
    width: 30px;
    height: 30px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--elevation-2);
    transition: all var(--transition-fast);
    z-index: 1;
}

.sidebar-toggle:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: scale(1.1);
}

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

.admin-sidebar.collapsed ~ .admin-main {
    margin-left: var(--sidebar-collapsed-width);
}

/* === HEADER === */
.admin-header {
    height: var(--header-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-xl);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.header-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.header-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.header-breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-breadcrumb-separator {
    color: var(--text-tertiary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* === CONTENIDO === */
.admin-content {
    flex: 1;
    padding: var(--spacing-xl);
}

/* ================================================================================
   CARDS Y PANELES 3D
   ================================================================================ */
.card-3d {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-1);
    transition: all var(--transition-base);
    overflow: hidden;
    position: relative;
}

.card-3d:hover {
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.card-3d-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-3d-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-3d-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-3d-body {
    padding: var(--spacing-xl);
}

.card-3d-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border);
    background: var(--background);
}

/* Cards con colores */
.card-3d.card-primary {
    border-color: var(--primary-light);
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(37, 99, 235, 0.02) 100%);
}

.card-3d.card-success {
    border-color: var(--success-light);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05) 0%, rgba(16, 185, 129, 0.02) 100%);
}

.card-3d.card-danger {
    border-color: var(--danger-light);
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.05) 0%, rgba(239, 68, 68, 0.02) 100%);
}

.card-3d.card-warning {
    border-color: var(--warning-light);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05) 0%, rgba(245, 158, 11, 0.02) 100%);
}

/* Card stats */
.card-stat {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--elevation-1);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card-stat::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: var(--primary);
    opacity: 0.05;
    border-radius: 0 var(--radius-lg) 0 100%;
}

.card-stat:hover {
    box-shadow: var(--elevation-2);
    transform: translateY(-4px);
}

.card-stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    box-shadow: var(--elevation-1);
}

.card-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.card-stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.card-stat-trend {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-sm);
}

.card-stat-trend.up {
    color: var(--success);
    background: rgba(16, 185, 129, 0.1);
}

.card-stat-trend.down {
    color: var(--danger);
    background: rgba(239, 68, 68, 0.1);
}

/* ================================================================================
   TABLAS 3D
   ================================================================================ */
.table-3d-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-1);
    overflow: hidden;
}

.table-3d {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table-3d thead {
    background: var(--background);
    position: sticky;
    top: 0;
    z-index: 10;
}

.table-3d th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.table-3d tbody tr {
    transition: all var(--transition-fast);
    border-bottom: 1px solid var(--border-light);
}

.table-3d tbody tr:hover {
    background: var(--surface-hover);
    box-shadow: inset 0 0 0 1px var(--border);
}

.table-3d tbody tr:last-child {
    border-bottom: none;
}

.table-3d td {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.table-3d-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Tabla striped */
.table-3d.table-striped tbody tr:nth-child(even) {
    background: rgba(0, 0, 0, 0.01);
}

/* Tabla con bordes */
.table-3d.table-bordered td,
.table-3d.table-bordered th {
    border-right: 1px solid var(--border-light);
}

.table-3d.table-bordered td:last-child,
.table-3d.table-bordered th:last-child {
    border-right: none;
}

/* ================================================================================
   BOTONES 3D (Extendido)
   ================================================================================ */
.btn-3d {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    font-size: 0.9375rem;
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    user-select: none;
    white-space: nowrap;
}

/* Tamaños */
.btn-3d-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-3d-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1.0625rem;
}

.btn-3d-xl {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Variantes de color */
.btn-3d-primary {
    background: var(--primary);
    color: white;
    box-shadow: var(--elevation-1);
}

.btn-3d-primary:hover {
    background: var(--primary-dark);
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.btn-3d-secondary {
    background: var(--secondary);
    color: white;
    box-shadow: var(--elevation-1);
}

.btn-3d-secondary:hover {
    background: var(--secondary-dark);
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.btn-3d-success {
    background: var(--success);
    color: white;
    box-shadow: var(--elevation-1);
}

.btn-3d-success:hover {
    background: var(--success-dark);
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.btn-3d-danger {
    background: var(--danger);
    color: white;
    box-shadow: var(--elevation-1);
}

.btn-3d-danger:hover {
    background: var(--danger-dark);
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.btn-3d-warning {
    background: var(--warning);
    color: white;
    box-shadow: var(--elevation-1);
}

.btn-3d-warning:hover {
    background: var(--warning-dark);
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

.btn-3d-info {
    background: var(--info);
    color: white;
    box-shadow: var(--elevation-1);
}

.btn-3d-info:hover {
    background: var(--info-dark);
    box-shadow: var(--elevation-2);
    transform: translateY(-2px);
}

/* Botones outline */
.btn-3d-outline {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text-primary);
}

.btn-3d-outline:hover {
    background: var(--surface-hover);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: var(--elevation-1);
}

.btn-3d-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-3d-outline-primary:hover {
    background: var(--primary);
    color: white;
}

/* Botones ghost */
.btn-3d-ghost {
    background: transparent;
    color: var(--text-primary);
}

.btn-3d-ghost:hover {
    background: var(--surface-hover);
}

/* Estados */
.btn-3d:active {
    transform: translateY(0) !important;
    box-shadow: var(--shadow-sm) !important;
}

.btn-3d:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: var(--shadow-sm) !important;
}

/* Efecto ripple */
.btn-3d::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-3d:active::after {
    width: 300px;
    height: 300px;
}

/* Grupo de botones */
.btn-group-3d {
    display: inline-flex;
    box-shadow: var(--elevation-1);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.btn-group-3d .btn-3d {
    border-radius: 0;
    box-shadow: none;
}

.btn-group-3d .btn-3d:not(:last-child) {
    border-right: 1px solid rgba(255, 255, 255, 0.2);
}

/* ================================================================================
   BADGES Y ETIQUETAS 3D
   ================================================================================ */
.badge-3d {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-xs);
    white-space: nowrap;
}

.badge-3d-primary {
    background: var(--primary);
    color: white;
}

.badge-3d-secondary {
    background: var(--secondary);
    color: white;
}

.badge-3d-success {
    background: var(--success);
    color: white;
}

.badge-3d-danger {
    background: var(--danger);
    color: white;
}

.badge-3d-warning {
    background: var(--warning);
    color: white;
}

.badge-3d-info {
    background: var(--info);
    color: white;
}

/* Badge outline */
.badge-3d-outline {
    background: transparent;
    border: 1.5px solid currentColor;
}

.badge-3d-outline.badge-3d-primary {
    color: var(--primary);
}

.badge-3d-outline.badge-3d-success {
    color: var(--success);
}

.badge-3d-outline.badge-3d-danger {
    color: var(--danger);
}

/* Badge con dot */
.badge-3d-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

/* ================================================================================
   FORMULARIOS 3D (desde archivo anterior)
   ================================================================================ */
.form-3d-container {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--elevation-1);
    position: relative;
    transition: box-shadow var(--transition-base);
}

.form-group-3d {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.form-group-3d label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.01em;
}

.form-group-3d label.required::after {
    content: '*';
    color: var(--danger);
    margin-left: 0.25rem;
}

.input-3d {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.input-3d:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-base);
    transform: translateY(-1px);
}

.input-3d:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1), var(--shadow-md);
    transform: translateY(-2px);
}

.textarea-3d {
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}

.select-3d {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* ================================================================================
   ALERTAS Y NOTIFICACIONES 3D
   ================================================================================ */
.alert-3d {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    box-shadow: var(--elevation-1);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    animation: alertSlideIn 0.3s ease;
}

@keyframes alertSlideIn {
    from {
        opacity: 0;
        transform: translateY(-1rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-3d-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

.alert-3d-content {
    flex: 1;
}

.alert-3d-title {
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.alert-3d-message {
    font-size: 0.9375rem;
    line-height: 1.6;
}

.alert-3d-close {
    flex-shrink: 0;
    background: transparent;
    border: none;
    cursor: pointer;
    color: inherit;
    opacity: 0.5;
    transition: opacity var(--transition-fast);
}

.alert-3d-close:hover {
    opacity: 1;
}

.alert-3d-primary {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary);
    color: var(--primary-dark);
}

.alert-3d-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success);
    color: var(--success-dark);
}

.alert-3d-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
    color: var(--danger-dark);
}

.alert-3d-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning);
    color: var(--warning-dark);
}

.alert-3d-info {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--info);
    color: var(--info-dark);
}

/* ================================================================================
   MODALES 3D
   ================================================================================ */
.modal-3d-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    z-index: var(--z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal-3d-backdrop.active {
    opacity: 1;
    visibility: visible;
}

.modal-3d {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--elevation-5);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
}

.modal-3d-backdrop.active .modal-3d {
    transform: scale(1) translateY(0);
}

.modal-3d-header {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-3d-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-3d-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.modal-3d-close:hover {
    background: var(--background);
    color: var(--text-primary);
}

.modal-3d-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    flex: 1;
}

.modal-3d-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
}

/* ================================================================================
   DROPDOWNS Y MENÚS 3D
   ================================================================================ */
.dropdown-3d {
    position: relative;
    display: inline-block;
}

.dropdown-3d-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    min-width: 200px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-3);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

.dropdown-3d.active .dropdown-3d-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-3d-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
    text-decoration: none;
}

.dropdown-3d-item:hover {
    background: var(--background);
    color: var(--primary);
}

.dropdown-3d-divider {
    height: 1px;
    background: var(--border);
    margin: var(--spacing-sm) 0;
}

/* ================================================================================
   TOOLTIPS 3D
   ================================================================================ */
.tooltip-3d {
    position: relative;
    display: inline-block;
}

.tooltip-3d::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--text-primary);
    color: var(--text-inverse);
    font-size: 0.875rem;
    border-radius: var(--radius-md);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
    z-index: var(--z-tooltip);
    box-shadow: var(--elevation-2);
}

.tooltip-3d::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-2px);
    border: 5px solid transparent;
    border-top-color: var(--text-primary);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    pointer-events: none;
    z-index: var(--z-tooltip);
}

.tooltip-3d:hover::before,
.tooltip-3d:hover::after {
    opacity: 1;
    visibility: visible;
}

/* ================================================================================
   PAGINACIÓN 3D
   ================================================================================ */
.pagination-3d {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    list-style: none;
}

.pagination-3d-item {
    display: flex;
}

.pagination-3d-link {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-xs);
}

.pagination-3d-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: var(--elevation-1);
    transform: translateY(-2px);
}

.pagination-3d-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: var(--elevation-1);
}

.pagination-3d-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ================================================================================
   TABS 3D
   ================================================================================ */
.tabs-3d {
    display: flex;
    gap: var(--spacing-sm);
    border-bottom: 2px solid var(--border);
    margin-bottom: var(--spacing-xl);
}

.tab-3d {
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tab-3d::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.tab-3d:hover {
    color: var(--primary);
}

.tab-3d.active {
    color: var(--primary);
}

.tab-3d.active::before {
    transform: scaleX(1);
}

/* ================================================================================
   BREADCRUMBS 3D
   ================================================================================ */
.breadcrumb-3d {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    list-style: none;
}

.breadcrumb-3d-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.9375rem;
}

.breadcrumb-3d-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-3d-link:hover {
    color: var(--primary);
}

.breadcrumb-3d-item.active {
    color: var(--text-primary);
    font-weight: 600;
}

.breadcrumb-3d-separator {
    color: var(--text-tertiary);
}

/* ================================================================================
   PROGRESS BAR 3D
   ================================================================================ */
.progress-3d {
    height: 12px;
    background: var(--background);
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-inner);
    position: relative;
}

.progress-3d-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    position: relative;
    box-shadow: var(--elevation-1);
}

.progress-3d-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.3) 50%, transparent 100%);
    animation: progressShimmer 2s infinite;
}

@keyframes progressShimmer {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

/* Progress con label */
.progress-3d-labeled {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-3d-labeled .progress-3d {
    flex: 1;
}

.progress-3d-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 50px;
    text-align: right;
}

/* ================================================================================
   SKELETON LOADERS 3D
   ================================================================================ */
.skeleton-3d {
    background: linear-gradient(90deg, var(--background) 0%, var(--background-alt) 50%, var(--background) 100%);
    background-size: 200% 100%;
    animation: skeletonPulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-md);
}

@keyframes skeletonPulse {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

.skeleton-3d-text {
    height: 1rem;
    margin-bottom: var(--spacing-sm);
}

.skeleton-3d-title {
    height: 1.5rem;
    width: 60%;
    margin-bottom: var(--spacing-md);
}

.skeleton-3d-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

/* ================================================================================
   AVATARS 3D
   ================================================================================ */
.avatar-3d {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--elevation-1);
    border: 2px solid var(--surface);
    transition: all var(--transition-fast);
}

.avatar-3d:hover {
    box-shadow: var(--elevation-2);
    transform: scale(1.05);
}

.avatar-3d-sm {
    width: 32px;
    height: 32px;
}

.avatar-3d-lg {
    width: 56px;
    height: 56px;
}

.avatar-3d-xl {
    width: 72px;
    height: 72px;
}

/* Avatar group */
.avatar-group-3d {
    display: flex;
    align-items: center;
}

.avatar-group-3d .avatar-3d {
    margin-right: -10px;
    position: relative;
}

.avatar-group-3d .avatar-3d:hover {
    z-index: 1;
}

/* ================================================================================
   SPINNERS Y LOADERS 3D
   ================================================================================ */
.spinner-3d {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.spinner-3d-sm {
    width: 24px;
    height: 24px;
    border-width: 2px;
}

.spinner-3d-lg {
    width: 56px;
    height: 56px;
    border-width: 4px;
}

/* Dots loader */
.dots-loader-3d {
    display: flex;
    gap: var(--spacing-sm);
}

.dots-loader-3d span {
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    animation: dotsBounce 1.4s infinite ease-in-out both;
}

.dots-loader-3d span:nth-child(1) {
    animation-delay: -0.32s;
}

.dots-loader-3d span:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes dotsBounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* ================================================================================
   EMPTY STATES 3D
   ================================================================================ */
.empty-state-3d {
    text-align: center;
    padding: var(--spacing-3xl) var(--spacing-xl);
}

.empty-state-3d-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-xl);
    color: var(--text-tertiary);
}

.empty-state-3d-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.empty-state-3d-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ================================================================================
   RESPONSIVE
   ================================================================================ */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 260px;
    }
}

@media (max-width: 768px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    
    .admin-sidebar.active {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .admin-header {
        padding: 0 var(--spacing-lg);
    }
    
    .admin-content {
        padding: var(--spacing-lg);
    }
    
    .card-3d-body {
        padding: var(--spacing-lg);
    }
    
    .modal-3d {
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
    }
}

@media (max-width: 640px) {
    .header-title {
        font-size: 1.25rem;
    }
    
    .header-breadcrumb {
        display: none;
    }
    
    .table-3d-container {
        overflow-x: auto;
    }
    
    .table-3d {
        min-width: 600px;
    }
}

/* ================================================================================
   MODO OSCURO
   ================================================================================ */
@media (prefers-color-scheme: dark) {
    :root {
        --surface: #1e293b;
        --surface-hover: #334155;
        --surface-elevated: #1e293b;
        --background: #0f172a;
        --background-alt: #1e293b;
        
        --border: #334155;
        --border-light: #1e293b;
        --border-dark: #475569;
        
        --text-primary: #f1f5f9;
        --text-secondary: #cbd5e1;
        --text-tertiary: #94a3b8;
        --text-disabled: #64748b;
        --text-placeholder: #475569;
    }
    
    .admin-sidebar {
        background: linear-gradient(180deg, #0f172a 0%, #020617 100%);
    }
}
/* Arreglo de posicionamiento para escritorio */
@media (min-width: 1024px) {
    .admin-main {
        margin-left: 280px; /* El ancho de tu sidebar */
        width: calc(100% - 280px);
    }
}

/* Arreglo para que el sidebar no tape todo en móvil al cargar */
@media (max-width: 1023px) {
    .admin-sidebar {
        transform: translateX(-100%);
    }
    .admin-sidebar.active {
        transform: translateX(0);
    }
}

/* ================================================================================
   UTILIDADES
   ================================================================================ */
.elevation-0 { box-shadow: var(--elevation-0) !important; }
.elevation-1 { box-shadow: var(--elevation-1) !important; }
.elevation-2 { box-shadow: var(--elevation-2) !important; }
.elevation-3 { box-shadow: var(--elevation-3) !important; }
.elevation-4 { box-shadow: var(--elevation-4) !important; }
.elevation-5 { box-shadow: var(--elevation-5) !important; }

.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-tertiary { color: var(--text-tertiary) !important; }

.bg-primary { background-color: var(--primary) !important; }
.bg-success { background-color: var(--success) !important; }
.bg-danger { background-color: var(--danger) !important; }
.bg-warning { background-color: var(--warning) !important; }
.bg-info { background-color: var(--info) !important; }

.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }
.rounded-xl { border-radius: var(--radius-xl) !important; }