/* ==========================================================================
   SISTEMA DE DESIGN - SINAIS ESCOLARES / ALERTAS SAAS
   Visual Moderno, Limpo, Responsivo, Minimalista e de Alta Qualidade (KISS)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Paleta de Cores Premium */
  --cor-primaria: #4f46e5;
  --cor-primaria-hover: #4338ca;
  --cor-primaria-suave: rgba(79, 70, 229, 0.08);
  
  --cor-secundaria: #06b6d4;
  --cor-sucesso: #10b981;
  --cor-sucesso-suave: rgba(16, 185, 129, 0.1);
  --cor-aviso: #f59e0b;
  --cor-aviso-suave: rgba(245, 158, 11, 0.1);
  --cor-erro: #ef4444;
  --cor-erro-suave: rgba(239, 68, 68, 0.1);

  /* Tons Neutros (Modo Escuro / Claro) */
  --bg-principal: #0f172a;
  --bg-superficie: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --borda-cor: #334155;
  
  --texto-principal: #f8fafc;
  --texto-secundario: #94a3b8;
  --texto-mutado: #64748b;

  /* Formas e Sombras */
  --raio-borda: 12px;
  --raio-borda-sm: 8px;
  --raio-borda-lg: 16px;
  --sombra-card: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  --sombra-glow: 0 0 20px rgba(79, 70, 229, 0.35);

  --fonte-principal: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transicao-suave: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset Global */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--fonte-principal);
  background-color: var(--bg-principal);
  color: var(--texto-principal);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--cor-primaria);
  text-decoration: none;
  transition: var(--transicao-suave);
}

a:hover {
  color: var(--cor-secundaria);
}

/* Layout Principal */
.layout-wrapper {
  display: flex;
  min-height: 100vh;
}

/* Sidebar de Navegação */
.sidebar {
  width: 260px;
  background: var(--bg-superficie);
  border-right: 1px solid var(--borda-cor);
  display: flex;
  flex-direction: column;
  padding: 1.5rem 1rem;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem 1.5rem;
  border-bottom: 1px solid var(--borda-cor);
  margin-bottom: 1.5rem;
}

.sidebar-logo-icone {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--cor-primaria), var(--cor-secundaria));
  border-radius: var(--raio-borda-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--sombra-glow);
}

.sidebar-logo-texto {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--texto-principal);
  letter-spacing: -0.02em;
}

.sidebar-logo-sub {
  font-size: 0.7rem;
  color: var(--cor-secundaria);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  display: block;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.75rem 1rem;
  color: var(--texto-secundario);
  border-radius: var(--raio-borda-sm);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transicao-suave);
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--texto-principal);
  transform: translateX(3px);
}

.nav-item.ativo {
  background: var(--cor-primaria-suave);
  color: #818cf8;
  border-left: 3px solid var(--cor-primaria);
  font-weight: 700;
}

.sidebar-rodape {
  padding-top: 1rem;
  border-top: 1px solid var(--borda-cor);
}

/* Área de Conteúdo */
.conteudo-principal {
  margin-left: 260px;
  flex: 1;
  padding: 2rem;
  max-width: 1400px;
}

/* Topbar / Cabecalho */
.topo-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--borda-cor);
}

.topo-titulo h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--texto-principal);
}

.topo-titulo p {
  font-size: 0.9rem;
  color: var(--texto-secundario);
}

.topo-usuario {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.badge-usuario {
  background: var(--bg-card-hover);
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--texto-secundario);
  border: 1px solid var(--borda-cor);
}

/* Grid de Cards e Widgets */
.grid-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.card-stat {
  background: var(--bg-card);
  border: 1px solid var(--borda-cor);
  border-radius: var(--raio-borda);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  transition: var(--transicao-suave);
  box-shadow: var(--sombra-card);
}

.card-stat:hover {
  transform: translateY(-4px);
  border-color: var(--cor-primaria);
  box-shadow: var(--sombra-glow);
}

.card-stat-icone {
  width: 54px;
  height: 54px;
  border-radius: var(--raio-borda-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-indigo { background: rgba(79, 70, 229, 0.15); color: #818cf8; }
.stat-cyan   { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }
.stat-emerald{ background: rgba(16, 185, 129, 0.15); color: #34d399; }
.stat-amber  { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }

.card-stat-info h3 {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.1;
  color: var(--texto-principal);
}

.card-stat-info p {
  font-size: 0.85rem;
  color: var(--texto-secundario);
  margin-top: 0.25rem;
}

/* Seções de Painel e Tabelas */
.painel-secao {
  background: var(--bg-card);
  border: 1px solid var(--borda-cor);
  border-radius: var(--raio-borda);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--sombra-card);
}

.secao-cabecalho {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.secao-cabecalho h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--texto-principal);
}

/* Tabelas Elegantes */
.tabela-container {
  overflow-x: auto;
}

.tabela-custom {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.tabela-custom th {
  background: rgba(255, 255, 255, 0.02);
  color: var(--texto-secundario);
  font-weight: 600;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--borda-cor);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

.tabela-custom td {
  padding: 1rem;
  border-bottom: 1px solid var(--borda-cor);
  color: var(--texto-principal);
}

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

.tabela-custom tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Badges e Status */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-ativo   { background: var(--cor-sucesso-suave); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-inativo { background: var(--cor-erro-suave); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-alerta  { background: var(--cor-aviso-suave); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }

/* Botões */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--raio-borda-sm);
  border: none;
  cursor: pointer;
  transition: var(--transicao-suave);
  text-decoration: none;
}

.btn-primario {
  background: linear-gradient(135deg, var(--cor-primaria), #6366f1);
  color: #fff;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-primario:hover {
  background: linear-gradient(135deg, var(--cor-primaria-hover), #4f46e5);
  box-shadow: var(--sombra-glow);
  transform: translateY(-2px);
  color: #fff;
}

.btn-secundario {
  background: var(--bg-card-hover);
  color: var(--texto-principal);
  border: 1px solid var(--borda-cor);
}

.btn-secundario:hover {
  background: #475569;
}

.btn-perigo {
  background: var(--cor-erro-suave);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-perigo:hover {
  background: var(--cor-erro);
  color: #fff;
}

.btn-sm {
  padding: 0.4rem 0.75rem;
  font-size: 0.8rem;
}

/* Formulários Modernos */
.form-grupo {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--texto-secundario);
  margin-bottom: 0.4rem;
}

.form-controle {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-principal);
  border: 1px solid var(--borda-cor);
  border-radius: var(--raio-borda-sm);
  color: var(--texto-principal);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transicao-suave);
}

.form-controle:focus {
  outline: none;
  border-color: var(--cor-primaria);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.2);
}

/* Mensagens de Alerta / Flash */
.alerta {
  padding: 1rem 1.25rem;
  border-radius: var(--raio-borda-sm);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.alerta-sucesso { background: var(--cor-sucesso-suave); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.alerta-erro    { background: var(--cor-erro-suave); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.alerta-aviso   { background: var(--cor-aviso-suave); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }
.alerta-info    { background: rgba(6, 182, 212, 0.1); color: #22d3ee; border: 1px solid rgba(6, 182, 212, 0.3); }

/* Card de Login Centralizado */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: radial-gradient(circle at top, #1e1b4b 0%, #0f172a 70%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--borda-cor);
  border-radius: var(--raio-borda-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--sombra-card);
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--cor-primaria), var(--cor-secundaria));
}

.login-cabecalho {
  text-align: center;
  margin-bottom: 2rem;
}

.login-icone {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--cor-primaria), var(--cor-secundaria));
  border-radius: var(--raio-borda);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 1rem;
  box-shadow: var(--sombra-glow);
}

.login-cabecalho h2 {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.login-cabecalho p {
  color: var(--texto-secundario);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* Media Query Responsivo */
@media (max-width: 768px) {
  .sidebar {
    position: static;
    width: 100%;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--borda-cor);
  }

  .layout-wrapper {
    flex-direction: column;
  }

  .conteudo-principal {
    margin-left: 0;
    padding: 1rem;
  }

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