/* ============================================
   VARIABLES CSS
============================================ */
:root {
    /* Colores principales */
    --bg-primary: #0B0C10;
    --bg-secondary: #0F1419;
    --bg-tertiary: #1A1F26;
    --bg-card: rgba(15, 20, 25, 0.8);
    --bg-hover: rgba(25, 30, 35, 0.8);
    
    /* Colores de acento */
    --color-primary: #45A29E;
    --color-secondary: #66FCF1;
    --color-accent: #C5C6C7;
    --color-text: #C5C6C7;
    --color-text-dim: rgba(197, 198, 199, 0.6);
    
    /* Colores de estado */
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-error: #F44336;
    --color-info: #2196F3;
    
    /* Sombras neumórficas */
    --shadow-dark: rgba(0, 0, 0, 0.5);
    --shadow-light: rgba(69, 162, 158, 0.1);
    --shadow-glow: rgba(102, 252, 241, 0.3);
    
    /* Espaciado */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 20px;
    --spacing-lg: 30px;
    --spacing-xl: 40px;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 25px;
    
    /* Sidebar */
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    
    /* Transiciones */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--bg-primary);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--color-primary);
}

/* ============================================
   FONDO ANIMADO
============================================ */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(69, 162, 158, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(102, 252, 241, 0.05) 0%, transparent 50%),
        linear-gradient(rgba(69, 162, 158, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(69, 162, 158, 0.03) 1px, transparent 1px);
    background-size: 100% 100%, 100% 100%, 40px 40px, 40px 40px;
    z-index: 0;
    pointer-events: none;
}

/* ============================================
   LAYOUT PRINCIPAL
============================================ */
.layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ============================================
   SIDEBAR
============================================ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-right: 1px solid rgba(69, 162, 158, 0.3);
    box-shadow: 
        8px 0 24px var(--shadow-dark),
        inset -1px 0 0 rgba(69, 162, 158, 0.2);
    position: fixed;
    left: 0;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    overflow-x: hidden;
    transition: var(--transition-normal);
    z-index: 1001;
}

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

.sidebar-header {
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-bottom: 1px solid rgba(69, 162, 158, 0.2);
}

.sidebar-logo {
    font-size: 28px;
    color: var(--color-secondary);
    text-shadow: 0 0 20px var(--shadow-glow);
}

.sidebar-title {
    font-size: 20px;
    font-weight: bold;
    color: var(--color-secondary);
    white-space: nowrap;
    transition: var(--transition-normal);
}

.sidebar.collapsed .sidebar-title {
    opacity: 0;
    width: 0;
}

.sidebar-menu {
    list-style: none;
    padding: var(--spacing-md) 0;
}

.sidebar-item {
    margin-bottom: var(--spacing-xs);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    transition: var(--transition-fast);
    position: relative;
    white-space: nowrap;
}

.sidebar-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--color-secondary);
    transform: scaleY(0);
    transition: var(--transition-fast);
}

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

.sidebar-link.active::before {
    transform: scaleY(1);
}

.sidebar-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-text {
    transition: var(--transition-normal);
}

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

.sidebar-badge {
    margin-left: auto;
    background: var(--color-error);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
}

/* ============================================
   MAIN CONTENT
============================================ */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    transition: var(--transition-normal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

/* ============================================
   TOPBAR
============================================ */
.topbar {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(69, 162, 158, 0.3);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 16px var(--shadow-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
    overflow: visible;
}

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

.topbar-toggle {
    background: transparent;
    border: none;
    color: var(--color-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.topbar-search {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: rgba(11, 12, 16, 0.8);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 
        inset 4px 4px 8px var(--shadow-dark),
        inset -2px -2px 6px var(--shadow-light);
    min-width: 300px;
}

.topbar-search input {
    background: transparent;
    border: none;
    outline: none;
    color: var(--color-text);
    flex: 1;
}

.topbar-search input::placeholder {
    color: var(--color-text-dim);
}

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

.topbar-icon-btn {
    background: rgba(15, 20, 25, 0.8);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text);
    position: relative;
    box-shadow: 
        4px 4px 8px var(--shadow-dark),
        -2px -2px 6px var(--shadow-light);
    transition: var(--transition-fast);
}

.topbar-icon-btn:hover {
    box-shadow: 
        6px 6px 12px var(--shadow-dark),
        -3px -3px 8px var(--shadow-light),
        0 0 20px var(--shadow-glow);
    color: var(--color-secondary);
}

.topbar-icon-btn .badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--color-error);
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    font-size: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-hover);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.topbar-user:hover {
    box-shadow: 0 0 20px var(--shadow-glow);
}

.topbar-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: var(--bg-primary);
}

/* ============================================
   CONTENT AREA
============================================ */
.content {
    flex: 1;
    padding: var(--spacing-lg);
}

.content-header {
    margin-bottom: var(--spacing-lg);
}

.content-title {
    font-size: 32px;
    color: var(--color-secondary);
    text-shadow: 0 0 20px var(--shadow-glow);
    margin-bottom: var(--spacing-sm);
}

.breadcrumb {
    display: flex;
    gap: var(--spacing-xs);
    color: var(--color-text-dim);
    font-size: 14px;
}

.breadcrumb-item:not(:last-child)::after {
    content: '/';
    margin-left: var(--spacing-xs);
}

/* ============================================
   GRID SYSTEM
============================================ */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

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

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ============================================
   CARDS
============================================ */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(5px);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 
        10px 10px 20px var(--shadow-dark),
        -5px -5px 15px var(--shadow-light),
        inset 0 0 0 1px rgba(69, 162, 158, 0.2);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-secondary), transparent);
    opacity: 0;
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 
        15px 15px 30px var(--shadow-dark),
        -8px -8px 20px var(--shadow-light),
        0 0 40px rgba(102, 252, 241, 0.15);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(69, 162, 158, 0.2);
}

.card-title {
    font-size: 18px;
    color: var(--color-secondary);
    font-weight: 600;
}

.card-body {
    color: var(--color-text);
}

/* Card Stats */
.card-stat {
    text-align: center;
}

.card-stat-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    filter: drop-shadow(0 0 10px var(--shadow-glow));
}

.card-stat-value {
    font-size: 36px;
    font-weight: bold;
    color: var(--color-secondary);
    text-shadow: 0 0 15px var(--shadow-glow);
    margin-bottom: var(--spacing-sm);
}

.card-stat-label {
    color: var(--color-text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 12px;
}

.card-stat-change {
    margin-top: var(--spacing-sm);
    font-size: 14px;
}

.card-stat-change.positive {
    color: var(--color-success);
}

.card-stat-change.negative {
    color: var(--color-error);
}

/* ============================================
   BUTTONS
============================================ */
.btn {
    background: rgba(20, 25, 30, 0.8);
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 24px;
    color: var(--color-secondary);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 
        6px 6px 12px var(--shadow-dark),
        -3px -3px 8px var(--shadow-light),
        inset 0 0 0 1px rgba(69, 162, 158, 0.3);
    transition: var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.btn:hover {
    box-shadow: 
        8px 8px 16px var(--shadow-dark),
        -4px -4px 10px var(--shadow-light),
        0 0 25px var(--shadow-glow);
    transform: translateY(-2px);
}

.btn:active {
    box-shadow: 
        inset 4px 4px 8px var(--shadow-dark),
        inset -2px -2px 6px var(--shadow-light);
    transform: translateY(0);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: var(--bg-primary);
}

.btn-success {
    background: var(--color-success);
    color: white;
}

.btn-warning {
    background: var(--color-warning);
    color: white;
}

.btn-error {
    background: var(--color-error);
    color: white;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 12px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
}

/* ============================================
   FORMS
============================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    background: rgba(11, 12, 16, 0.8);
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: var(--color-text);
    font-size: 14px;
    box-shadow: 
        inset 5px 5px 10px var(--shadow-dark),
        inset -2px -2px 6px var(--shadow-light),
        0 0 0 1px rgba(69, 162, 158, 0.2);
    transition: var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    box-shadow: 
        inset 5px 5px 10px var(--shadow-dark),
        inset -2px -2px 6px var(--shadow-light),
        0 0 20px var(--shadow-glow),
        0 0 0 2px rgba(102, 252, 241, 0.4);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-text-dim);
}

.form-textarea {
    min-height: 100px;
    resize: vertical;
}

/* ============================================
   TABLES
============================================ */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    box-shadow: 
        10px 10px 20px var(--shadow-dark),
        -5px -5px 15px var(--shadow-light);
}

.table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
}

.table thead {
    background: rgba(11, 12, 16, 0.8);
}

.table th {
    padding: var(--spacing-md);
    text-align: left;
    color: var(--color-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 12px;
    letter-spacing: 1px;
    border-bottom: 2px solid rgba(69, 162, 158, 0.3);
}

.table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(69, 162, 158, 0.1);
    color: var(--color-text);
}

.table tbody tr {
    transition: var(--transition-fast);
}

.table tbody tr:hover {
    background: var(--bg-hover);
}

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

/* ============================================
   BADGES
============================================ */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

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

.badge-error {
    background: var(--color-error);
    color: white;
}

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

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

/* ============================================
   ALERTS
============================================ */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: start;
    gap: var(--spacing-sm);
    box-shadow: 
        6px 6px 12px var(--shadow-dark),
        -3px -3px 8px var(--shadow-light);
}

.alert-success {
    background: rgba(76, 175, 80, 0.2);
    border-left: 4px solid var(--color-success);
    color: var(--color-success);
}

.alert-warning {
    background: rgba(255, 152, 0, 0.2);
    border-left: 4px solid var(--color-warning);
    color: var(--color-warning);
}

.alert-error {
    background: rgba(244, 67, 54, 0.2);
    border-left: 4px solid var(--color-error);
    color: var(--color-error);
}

.alert-info {
    background: rgba(33, 150, 243, 0.2);
    border-left: 4px solid var(--color-info);
    color: var(--color-info);
}

/* ============================================
   PROGRESS BARS
============================================ */
.progress {
    height: 18px;
    background: rgba(11, 12, 16, 0.8);
    border-radius: var(--radius-md);
    box-shadow: 
        inset 4px 4px 8px var(--shadow-dark),
        inset -2px -2px 6px var(--shadow-light);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    border-radius: var(--radius-md);
    box-shadow: 0 0 15px var(--shadow-glow);
    transition: width 1s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: bold;
    color: var(--bg-primary);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: 13px;
    color: var(--color-text);
}

/* ============================================
   MODALS
============================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    box-shadow: 
        20px 20px 40px var(--shadow-dark),
        -10px -10px 30px var(--shadow-light),
        0 0 60px var(--shadow-glow);
    transform: scale(0.9);
    transition: var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(69, 162, 158, 0.2);
}

.modal-title {
    font-size: 24px;
    color: var(--color-secondary);
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    font-size: 24px;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--color-error);
}

.modal-body {
    margin-bottom: var(--spacing-lg);
}

/* ============================================
   TABS
============================================ */
.tabs {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid rgba(69, 162, 158, 0.2);
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.tab::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-secondary);
    transform: scaleX(0);
    transition: var(--transition-fast);
}

.tab:hover,
.tab.active {
    color: var(--color-secondary);
}

.tab.active::after {
    transform: scaleX(1);
}

/* ============================================
   DROPDOWN
============================================ */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-xs);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs);
    min-width: 200px;
    box-shadow: 
        10px 10px 20px var(--shadow-dark),
        -5px -5px 15px var(--shadow-light),
        0 0 40px var(--shadow-glow);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: var(--transition-fast);
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.dropdown-item {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.dropdown-item:hover {
    background: var(--bg-hover);
    color: var(--color-secondary);
}

/* ============================================
   UTILITIES
============================================ */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: var(--spacing-xs); }
.ml-2 { margin-left: var(--spacing-sm); }
.ml-3 { margin-left: var(--spacing-md); }
.ml-4 { margin-left: var(--spacing-lg); }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: var(--spacing-xs); }
.mr-2 { margin-right: var(--spacing-sm); }
.mr-3 { margin-right: var(--spacing-md); }
.mr-4 { margin-right: var(--spacing-lg); }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }

.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.align-end { align-items: flex-end; }

.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

.flex-wrap { flex-wrap: wrap; }
.flex-column { flex-direction: column; }

.gap-0 { gap: 0; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .main-content { margin-left: 0 !important; }
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.mobile-active {
        transform: translateX(0);
    }
    sidebar,
  .sidebar.collapsed {
    width: var(--sidebar-width);
  }

  /* En móvil, muestra los textos aunque exista .collapsed */
  .sidebar.collapsed .sidebar-title,
  .sidebar.collapsed .sidebar-text {
    opacity: 1;
    width: auto;
  }

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

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

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

    .topbar-search {
        min-width: 200px;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 20px;
        --spacing-xl: 30px;
    }

    .content {
        padding: var(--spacing-md);
    }

    .content-title {
        font-size: 24px;
    }

    .topbar {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .topbar-search {
        display: none;
    }

    .card {
        padding: var(--spacing-md);
    }

    .table-container {
        font-size: 14px;
    }

    .table th,
    .table td {
        padding: var(--spacing-sm);
    }

    .modal {
        padding: var(--spacing-lg);
        width: 95%;
    }
}

@media (max-width: 480px) {
    .topbar-user span {
        display: none;
    }

    .btn {
        padding: 10px 16px;
        font-size: 12px;
    }

    .card-stat-value {
        font-size: 28px;
    }
}

/* ============================================
   MOBILE MENU OVERLAY
============================================ */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(3px);
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-normal);
    z-index: 999;
}

.mobile-overlay.active {
    opacity: 0;
    pointer-events: all;
}



.sidebar-dropdown {
    position: relative;
}

.sidebar-arrow {
    margin-left: auto;
    font-size: 10px;
    transition: var(--transition-fast);
    opacity: 0.6;
}

.sidebar-dropdown.open .sidebar-arrow {
    transform: rotate(-180deg);
}

/* Cuando el sidebar está colapsado, ocultar la flecha */
.sidebar.collapsed .sidebar-arrow {
    display: none;
}

/* Submenu */
.sidebar-submenu {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(11, 12, 16, 0.6);
    margin-top: var(--spacing-xs);
    border-radius: var(--radius-sm);
}

.sidebar-dropdown.open .sidebar-submenu {
    max-height: 600px;
    padding: var(--spacing-xs) 0;
}

.sidebar-subitem {
    margin-bottom: 2px;
}

.sidebar-sublink {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md) var(--spacing-xs) calc(var(--spacing-md) + 20px);
    color: var(--color-text-dim);
    transition: var(--transition-fast);
    position: relative;
    font-size: 13px;
    white-space: nowrap;
}

.sidebar-sublink::before {
    content: '•';
    position: absolute;
    left: var(--spacing-md);
    color: var(--color-primary);
    opacity: 0;
    transition: var(--transition-fast);
}

.sidebar-sublink:hover,
.sidebar-sublink.active {
    background: rgba(25, 30, 35, 0.5);
    color: var(--color-secondary);
    padding-left: calc(var(--spacing-md) + 28px);
}

.sidebar-sublink:hover::before,
.sidebar-sublink.active::before {
    opacity: 1;
}

.sidebar-sublink .sidebar-icon {
    width: 16px;
    height: 16px;
    font-size: 14px;
}

/* Cuando el sidebar está colapsado */
.sidebar.collapsed .sidebar-submenu {
    display: none;
}

/* En hover del dropdown cuando está colapsado, mostrar submenu flotante */
.sidebar.collapsed .sidebar-dropdown:hover .sidebar-submenu {
    display: block;
    position: absolute;
    left: 100%;
    top: 0;
    min-width: 220px;
    max-height: none;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(69, 162, 158, 0.3);
    box-shadow: 
        10px 10px 20px var(--shadow-dark),
        -5px -5px 15px var(--shadow-light),
        0 0 40px var(--shadow-glow);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    z-index: 1000;
}

.sidebar.collapsed .sidebar-dropdown:hover .sidebar-sublink {
    padding-left: var(--spacing-md);
}

/* Badge en submenu */
.sidebar-sublink .sidebar-badge {
    font-size: 9px;
    padding: 1px 6px;
}

/* Responsive: En móvil mantener comportamiento normal */
@media (max-width: 992px) {
    .sidebar.collapsed .sidebar-submenu {
        display: block;
        position: static;
        background: rgba(11, 12, 16, 0.6);
    }
    
    .sidebar.collapsed .sidebar-dropdown.open .sidebar-submenu {
        max-height: 600px;
    }
    
    .sidebar.collapsed .sidebar-dropdown:hover .sidebar-submenu {
        position: static;
        box-shadow: none;
        border: none;
    }
}

/* Animación suave para el sidebar cuando cambia de estado */
.sidebar-dropdown,
.sidebar-submenu,
.sidebar-sublink {
    will-change: transform, max-height;
}

/* Separador visual entre grupos de menú */
.sidebar-item + .sidebar-item.sidebar-separator {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(69, 162, 158, 0.1);
}

/* Estado activo en el dropdown principal cuando hay un sublink activo */
.sidebar-dropdown:has(.sidebar-sublink.active) > .sidebar-link {
    color: var(--color-secondary);
    background: var(--bg-hover);
}

.sidebar-dropdown:has(.sidebar-sublink.active) > .sidebar-link::before {
    transform: scaleY(1);
}

/* Indicador visual de que el dropdown tiene items activos */
.sidebar-dropdown.open > .sidebar-link {
    background: rgba(25, 30, 35, 0.3);
}

/* Mejorar la visibilidad en hover */
.sidebar-dropdown > .sidebar-link:hover .sidebar-arrow {
    opacity: 1;
    color: var(--color-secondary);
}

/* Transition suave para todos los cambios */
.sidebar-submenu,
.sidebar-sublink,
.sidebar-arrow {
    transition: all var(--transition-normal);
}

/* Efecto de profundidad en submenús */
.sidebar-submenu {
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* Contador de items en dropdown (opcional) */
.sidebar-dropdown-badge {
    background: rgba(69, 162, 158, 0.2);
    color: var(--color-secondary);
    padding: 2px 6px;
    border-radius: 8px;
    font-size: 10px;
    font-weight: bold;
    margin-left: auto;
}

/* Animación de entrada para submenús */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sidebar-dropdown.open .sidebar-submenu {
    animation: slideDown 0.3s ease;
}

/* Mejora de accesibilidad */
.sidebar-link:focus,
.sidebar-sublink:focus {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Estado de carga */
.sidebar-submenu.loading {
    opacity: 0.5;
    pointer-events: none;
}

.sidebar-submenu.loading::after {
    content: '⟳';
    display: block;
    text-align: center;
    animation: spin 1s linear infinite;
    color: var(--color-secondary);
}

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

/* ============================================
   TOPBAR DROPDOWNS (Notificaciones y Mensajes)
============================================ */
.topbar-dropdown {
    position: relative;
    z-index: 1200;
}

.topbar-dropdown .dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 380px;
    max-height: 500px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    box-shadow:
        15px 15px 30px var(--shadow-dark),
        -8px -8px 20px var(--shadow-light),
        0 0 40px rgba(102, 252, 241, 0.15),
        inset 0 0 0 1px rgba(69, 162, 158, 0.3);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 1300;
    display: flex !important;
    flex-direction: column;
    pointer-events: none;
}

.topbar-dropdown .dropdown-menu.active {
    opacity: 1 !important;
    visibility: visible !important;
    transform: translateY(0) !important;
    pointer-events: all;
}

.dropdown-header {
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid rgba(69, 162, 158, 0.2);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(11, 12, 16, 0.5);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.dropdown-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-secondary);
    margin: 0;
}

.mark-all-read {
    background: transparent;
    border: none;
    color: var(--color-primary);
    font-size: 12px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.mark-all-read:hover {
    background: var(--bg-hover);
    color: var(--color-secondary);
}

.dropdown-body {
    flex: 1;
    overflow-y: auto;
    max-height: 400px;
    padding: var(--spacing-xs);
}

.dropdown-body::-webkit-scrollbar {
    width: 6px;
}

.dropdown-body::-webkit-scrollbar-track {
    background: rgba(11, 12, 16, 0.5);
    border-radius: 3px;
}

.dropdown-body::-webkit-scrollbar-thumb {
    background: var(--color-primary);
    border-radius: 3px;
}

.dropdown-body::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

.dropdown-loading {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-dim);
    font-size: 14px;
}

.dropdown-empty {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-dim);
    font-size: 14px;
}

.dropdown-empty svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

.notification-item,
.message-item {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--radius-md);
    background: rgba(15, 20, 25, 0.6);
    border-left: 3px solid transparent;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    gap: var(--spacing-sm);
}

.notification-item:hover,
.message-item:hover {
    background: var(--bg-hover);
    border-left-color: var(--color-primary);
    transform: translateX(2px);
}

.notification-item.unread {
    background: rgba(69, 162, 158, 0.1);
    border-left-color: var(--color-secondary);
}

.notification-icon,
.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}

.notification-icon {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
}

.message-avatar {
    background: linear-gradient(135deg, #FF6B6B, #FF8E53);
    font-weight: bold;
    color: white;
    font-size: 14px;
}

.notification-content,
.message-content {
    flex: 1;
    min-width: 0;
}

.notification-title,
.message-sender {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.notification-message,
.message-preview {
    font-size: 13px;
    color: var(--color-text-dim);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.notification-time,
.message-time {
    font-size: 11px;
    color: var(--color-text-dim);
    opacity: 0.7;
}

.notification-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-secondary);
    flex-shrink: 0;
    margin-top: 6px;
    animation: pulse 2s infinite;
}

.notification-item.read .notification-status {
    display: none;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.dropdown-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid rgba(69, 162, 158, 0.2);
    text-align: center;
    background: rgba(11, 12, 16, 0.5);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.dropdown-footer a {
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: var(--transition-fast);
}

.dropdown-footer a:hover {
    color: var(--color-secondary);
}

/* Badge actualizado dinámicamente */
.topbar-icon-btn .badge.hidden {
    display: none;
}

/* Responsive para dropdowns */
@media (max-width: 480px) {
    .topbar-dropdown .dropdown-menu {
        width: calc(100vw - 32px);
        right: -100px;
    }
}