:root {
    /* Paleta Aurora Inspired */
    --primary: #6366f1; /* Indigo 500 */
    --primary-hover: #4f46e5; /* Indigo 600 */
    --secondary: #64748b; /* Slate 500 */
    --success: #10b981; /* Emerald 500 */
    --danger: #ef4444; /* Red 500 */
    --warning: #f59e0b; /* Amber 500 */
    
    /* Fondos y Superficies */
    --bg-body: #f1f5f9; /* Slate 100 */
    --bg-card: #ffffff;
    --bg-sidebar: #0f172a; /* Slate 900 */
    
    /* Texto */
    --text-main: #1e293b; /* Slate 800 */
    --text-muted: #64748b; /* Slate 500 */
    --text-light: #f8fafc; /* Slate 50 */
    
    /* Bordes y Sombras */
    --border-color: #e2e8f0; /* Slate 200 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --radius: 0.5rem;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.5;
    display: flex;
    min-height: 100vh;
}

/* Layout */
.app-container {
    display: flex;
    width: 100%;
}

.sidebar {
    width: 280px;
    background-color: var(--bg-sidebar);
    color: var(--text-light);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: width 0.3s ease;
    overflow: hidden;
}

.sidebar.collapsed {
    width: 80px;
}

.sidebar-header {
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.sidebar.collapsed .brand-text {
    display: none;
}

.sidebar.collapsed .sidebar-brand {
    justify-content: center;
    width: 100%;
}

.sidebar-nav {
    padding: 1.5rem 1rem;
    flex: 1;
    overflow-y: auto;
}

.nav-section {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
    padding-left: 0.5rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

.sidebar.collapsed .nav-section {
    display: none;
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 0.75rem;
}

.sidebar.collapsed .link-text {
    display: none;
}

.nav-link {
    display: block;
    padding: 0.75rem 1rem;
    color: #94a3b8;
    text-decoration: none;
    border-radius: var(--radius);
    margin-bottom: 0.25rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-link:hover, .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

.nav-link i {
    font-size: 1.25rem;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.top-navbar {
    height: 64px;
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    flex-shrink: 0;
}

.content-wrapper {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--text-muted);
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: background 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.user-menu {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-info {
    text-align: right;
    line-height: 1.2;
}

.user-name {
    display: block;
    font-weight: 600;
    font-size: 0.875rem;
}

.user-role {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.user-avatar {
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.125rem;
}

/* Componentes Generales */
.card {
    background-color: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.875rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s;
    font-size: 0.875rem;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-secondary {
    background-color: white;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: var(--bg-body);
}

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
}

/* Tablas */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.table th {
    background-color: var(--bg-body);
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

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

/* Formularios */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-main);
}

.form-control {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: border-color 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.alert {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
}

.alert-danger {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Dashboard Widgets */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
}

.stat-label {
    color: var(--text-muted);
    font-size: 0.875rem;
}