/**
 * Design system — tokens, layout shell, navegação e componentes base.
 * Complementa styles.css sem quebrar telas existentes.
 */

:root {
  /* Escala de espaçamento (8px base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;

  /* Tipografia */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;

  --sidebar-w: 260px;
  --topbar-h: 52px;
  --content-max: 1280px;

  --surface-elevated: #1e2230;
  --surface-muted: #141720;
  --accent-subtle: rgba(108, 92, 231, 0.12);
}

/* Scrollbars discretos no tema escuro */
html {
  scrollbar-width: thin;
  scrollbar-color: #3d4460 var(--bg);
}
html::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
html::-webkit-scrollbar-track {
  background: var(--bg);
}
html::-webkit-scrollbar-thumb {
  background: #3d4460;
  border-radius: 4px;
}
html::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ── Topbar + breadcrumb ── */
.app-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--topbar-h);
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  position: sticky;
  top: 0;
  z-index: 50;
}

.app-topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 0;
}

.sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  flex-shrink: 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-muted);
  min-width: 0;
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  white-space: nowrap;
}

.breadcrumb-item:not(:last-child)::after {
  content: '/';
  opacity: 0.45;
  margin-left: var(--space-2);
}

.breadcrumb-item--current {
  color: var(--text);
  font-weight: 600;
}

/* ── Sidebar com grupos ── */
.nav-group {
  margin-bottom: var(--space-4);
}

.nav-group-label {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0.85;
}

.nav-item {
  width: 100%;
}

.nav-item .nav-label {
  flex: 1;
  min-width: 0;
}

/* ── Área de conteúdo ── */
.main-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
}

.page-header {
  margin-bottom: var(--space-6);
}

.page-header h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-header .subtitle {
  font-size: var(--text-sm);
  margin-top: var(--space-1);
  max-width: 52ch;
}

/* Barra de ações padronizada */
.page-header .page-actions,
.page-header .header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

/* Menu "Mais ações" */
.action-menu {
  position: relative;
  display: inline-block;
}

.action-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 4px);
  min-width: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  padding: var(--space-2);
  z-index: 200;
}

.action-menu-panel[hidden] {
  display: none !important;
}

.action-menu-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font);
  font-size: var(--text-sm);
  text-align: left;
  border-radius: 6px;
  cursor: pointer;
}

.action-menu-item:hover {
  background: var(--bg-hover);
}

/* ── Dashboard ── */
.dashboard-page {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.dashboard-welcome {
  padding: var(--space-6);
  background: linear-gradient(135deg, var(--accent-subtle) 0%, transparent 60%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.dashboard-welcome h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.dashboard-welcome p {
  color: var(--text-muted);
  font-size: var(--text-sm);
  max-width: 60ch;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
}

.dashboard-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.15s, transform 0.15s;
  cursor: pointer;
  text-align: left;
  font-family: var(--font);
  color: inherit;
}

.dashboard-card:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.dashboard-card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  font-size: 1.25rem;
}

.dashboard-card h3 {
  font-size: var(--text-base);
  font-weight: 600;
}

.dashboard-card p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.45;
}

.dashboard-status-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
}

.dashboard-status-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--surface-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}

.dashboard-section-title {
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

/* Seções de formulário colapsáveis */
.form-section {
  margin-bottom: var(--space-4);
}

.form-section-title {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border);
}

.required-mark {
  color: var(--danger);
  margin-left: 2px;
}

/* Footer de formulário fixo em telas longas */
.form-footer-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-6);
  margin-top: var(--space-6);
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: 0 0 var(--radius) var(--radius);
  position: sticky;
  bottom: 0;
  z-index: 40;
}

/* Overlay mobile sidebar */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 90;
}

.sidebar-overlay.active {
  display: block;
}