/**
 * ============================================================================
 *    ERP ENSENYEM - SIDEBAR PREMIUM LAYER
 * ============================================================================
 * Este archivo moderniza la barra lateral con efectos de profundidad,
 * glassmorphism y micro-animaciones.
 * ============================================================================
 */

.sidebar {
    background: var(--sidebar-bg);
    border-right: 1px solid var(--sidebar-border-color);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.02);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sticky);
    transition: width var(--transition-slow) cubic-bezier(0.4, 0, 0.2, 1);
}

/* Header & Brand */
.sidebar__header {
    height: 56px; /* Altura estándar Google */
    padding: 0 var(--space-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid transparent;
}

.sidebar__brand {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--primary-700);
    letter-spacing: -0.01em;
}
.sidebar__nav {
    gap: 0 !important; /* Sin espacio entre botones */
    padding: 0.25rem 0 !important; /* Padding vertical mínimo */
}

/* Nav Links */
.sidebar__nav-link {
    margin: 1px 0.5rem; /* Margen vertical de solo 1px */
    padding: 0.35rem 0.875rem; /* Padding vertical reducido */
    border-radius: 9999px; 
    color: var(--color-gray-600);
    font-weight: 400;
    font-size: 0.8125rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-decoration: none;
    transition: all var(--transition-base) ease;
}

.sidebar__nav-link:hover {
    background: var(--color-gray-100);
    color: var(--primary-700);
    transform: none; /* Google no usa traslación lateral en hover */
}

.sidebar__nav-link.is-active {
    background: var(--primary-100); /* Un poco más de presencia para la píldora */
    color: var(--primary-800);
    font-weight: 500;
}

.sidebar__nav-icon {
    font-size: 1.125rem;
    margin-right: 0.75rem; /* Google usa menos espacio entre icono y texto */
    transition: transform var(--transition-base) ease;
    opacity: 0.75;
}

.sidebar__nav-link.is-active .sidebar__nav-icon {
    opacity: 1;
    color: var(--primary-700);
}

.sidebar__nav-link:hover .sidebar__nav-icon {
    opacity: 1;
}

/* Groups & Titles */
.sidebar__nav-group {
    margin-top: 0.5rem; /* Reducido al mínimo */
}

.sidebar__group-title {
    padding: 0 1.5rem;
    margin-bottom: 0.125rem;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-400);
    opacity: 0.7;
}

/* Submenus */
.sidebar__submenu {
    margin: 0;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 0;
    overflow: hidden;
    max-height: 0;
    transition: all var(--transition-slow) ease-out;
    opacity: 0;
}

.sidebar__nav-link[aria-expanded="true"] + .sidebar__submenu,
.sidebar__submenu.is-open {
    margin: 0.125rem 0.75rem 0.5rem 0.75rem;
    padding-left: 2rem;
    max-height: 800px;
    opacity: 1;
    gap: 0.125rem;
}

.sidebar__submenu-link {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    color: var(--color-gray-500);
    font-size: 0.75rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all var(--transition-fast) ease;
}

.sidebar__submenu-link i {
    font-size: 1rem;
    opacity: 0.7;
}

.sidebar__submenu-link:hover {
    color: var(--primary-600);
    background: var(--color-gray-50);
}

.sidebar__submenu-link.is-active {
    color: var(--primary-700);
    font-weight: 600;
    background: white;
    box-shadow: var(--shadow-sm);
}

/* Footer & User */
.sidebar__footer {
    margin-top: auto;
    padding: 0.5rem 0.75rem; /* Aún más compacto */
    border-top: 1px solid var(--color-gray-100);
}

.sidebar__user-section {
    background: var(--color-gray-50);
    padding: 0.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

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

.sidebar__user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8125rem;
    box-shadow: 0 2px 8px rgba(130, 3, 3, 0.15);
}

.sidebar__user-details {
    display: flex;
    flex-direction: column;
}

.sidebar__user-name {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray-800);
    line-height: 1.2;
}

.sidebar__user-role {
    font-size: 0.6875rem;
    color: var(--color-gray-500);
    text-transform: capitalize;
}

.sidebar__logout-link {
    margin-top: 0.125rem;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-danger-500);
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
    padding: 0.375rem 0.5rem;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast) ease;
}

.sidebar__logout-link:hover {
    background: var(--color-danger-50);
}

/* Toggle Rotation */
.sidebar__toggle-icon {
    transition: transform var(--transition-base) ease;
}

.sidebar__nav-link[aria-expanded="true"] .sidebar__toggle-icon {
    transform: rotate(180deg);
}

/* Glassmorphism Support */
@supports (backdrop-filter: blur(12px)) {
    .sidebar {
        background: rgba(255, 255, 255, 0.8);
        backdrop-filter: blur(12px);
    }
}