:root {
    --cor-sidebar: #041E3F;
    --cor-destaque: #00A0D3;
}

/* ====================== LOGIN: ANIMAÇÃO DE ENTRADA ====================== */
.card-sistema {
  animation: cardEntrance 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes cardEntrance {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ====================== SIDEBAR PREMIUM (estilo Saúde) ====================== */
.sidebar {
    overflow-x: hidden;
}

.main-sidebar {
    background-color: var(--cor-sidebar) !important;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
    border-right: none !important;
    transition: all 0.3s ease;
}

.main-sidebar .brand-link {
    border-bottom: 1px solid rgba(255,255,255,0.08) !important;
    background-color: var(--cor-sidebar) !important;
}

.main-sidebar .brand-link .brand-text {
    color: #ffffff !important;
}

/* Itens do menu */
.nav-sidebar .nav-item .nav-link {
    border-radius: 8px !important;
    margin: 4px 16px 4px 8px !important;
    width: calc(100% - 24px) !important;
    padding: 8px 12px !important;
    transition: all 0.2s ease-in-out !important;
    border-left: 3px solid transparent !important;
    font-size: 0.85rem !important;
    color: #ffffff !important;
}

/* Hover */
.nav-sidebar .nav-item .nav-link:hover {
    background-color: #1C345A !important;
    color: #ffffff !important;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* Item ativo */
.nav-sidebar .nav-item.menu-open > .nav-link,
.nav-sidebar .nav-item .nav-link.active {
    background-color: var(--cor-destaque) !important;
    color: #ffffff !important;
    font-weight: 600;
    box-shadow: 0 4px 8px rgba(0,160,211,0.35);
}

/* Ícones do menu */
.nav-sidebar .nav-item .nav-link i.nav-icon {
    margin-right: 10px;
    width: 25px;
    text-align: center;
    transition: transform 0.2s ease;
}

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

/* Setinhas dos dropdowns */
.nav-sidebar .nav-item .nav-link p > i.right {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
}

.nav-sidebar .nav-item.menu-open > .nav-link p > i.right {
    transform: translateY(-50%) rotate(-90deg);
}

/* Submenus */
.nav-treeview {
    padding-left: 10px;
}

.nav-treeview .nav-link {
    margin: 2px 12px 2px 8px !important;
    padding: 6px 12px !important;
    font-size: 0.8rem !important;
    color: rgba(255, 255, 255, 0.8) !important;
}

/* Painel do usuário na sidebar */
.user-panel {
    border-bottom: 1px solid rgba(255,255,255,0.1) !important;
    margin-bottom: 15px !important;
}

.user-panel .info span {
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.75rem;
    opacity: 1;
    color: #ffffff;
}

/* ====================== LOADER DE CONTEÚDO (SPINNER PREMIUM) ====================== */
#loader-conteudo {
    position: absolute;
    inset: 0;
    background: rgba(244, 246, 249, 0.85);
    backdrop-filter: blur(2px);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 1040;
}

#loader-conteudo.ativo {
    display: flex;
}

.spinner-premium {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: 6px solid rgba(0, 160, 211, 0.18);
    border-top-color: var(--cor-destaque);
    border-right-color: var(--cor-destaque);
    animation: girarSpinner 0.8s linear infinite;
    box-shadow: 0 6px 18px rgba(0, 160, 211, 0.25);
}

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

#loader-conteudo .loader-texto {
    margin-top: 18px;
    font-weight: 600;
    letter-spacing: 0.5px;
    color: var(--cor-sidebar);
    font-family: 'Source Sans Pro', sans-serif;
    animation: pulsarTexto 1.2s ease-in-out infinite;
}

@keyframes pulsarTexto {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* O content-wrapper precisa ser referência para o overlay absoluto */
.content-wrapper {
    position: relative;
    min-height: calc(100vh - 57px);
}