/* Material Design 3 Layout: Top App Bar, Navigation Drawer, Main Content Shell */

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

body {
  font-family: var(--md-font-family);
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Global M3 Link System - Scoped to text links only (excluding buttons, chips, nav items, icon buttons) */
a:not(.m3-btn):not(.m3-chip):not(.m3-nav-item):not(.m3-icon-button):not(.m3-nav-app-header):not(.m3-filter-option) {
  color: var(--md-sys-color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--md-transition-standard);
}

a:not(.m3-btn):not(.m3-chip):not(.m3-nav-item):not(.m3-icon-button):not(.m3-nav-app-header):not(.m3-filter-option):hover,
a:not(.m3-btn):not(.m3-chip):not(.m3-nav-item):not(.m3-icon-button):not(.m3-nav-app-header):not(.m3-filter-option):focus {
  color: var(--md-sys-color-primary);
  text-decoration: underline;
}

/* Top App Bar */
.m3-top-app-bar {
  height: 64px;
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--md-elevation-1);
}

.m3-top-app-bar .brand-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.m3-top-app-bar .brand-section h1 {
  font-size: 1.25rem;
  font-weight: 500;
}

.m3-top-app-bar .brand-section a {
  color: inherit;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.m3-top-app-bar .actions-section {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Main App Shell Layout */
.m3-app-shell {
  display: flex;
  flex: 1;
  position: relative;
}

/* Navigation Drawer / Rail */
.m3-nav-drawer {
  width: 280px;
  background-color: var(--md-sys-color-surface-container-low);
  border-right: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  flex-direction: column;
  padding: 12px;
  gap: 4px;
  transition: var(--md-transition-standard);
  flex-shrink: 0;
  overflow-y: auto;
}

.m3-nav-drawer.collapsed {
  width: 80px;
  padding: 12px 8px;
}

.m3-nav-drawer.collapsed .nav-text,
.m3-nav-drawer.collapsed .m3-nav-section-title {
  display: none;
}

.m3-nav-drawer.collapsed .m3-nav-item {
  justify-content: center;
  padding: 10px 0;
  width: 56px;
  margin: 0 auto;
  border-radius: var(--md-shape-corner-full);
}

.m3-nav-section-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--md-sys-color-outline);
  padding: 12px 16px 4px 16px;
}

/* Navigation Hierarchy & Grouping */
.m3-nav-app-group {
  margin-top: 8px;
}

.m3-nav-app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-radius: var(--md-shape-corner-m);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--md-sys-color-primary);
  background-color: var(--md-sys-color-surface-container);
  cursor: pointer;
  user-select: none;
  transition: var(--md-transition-standard);
  margin-bottom: 4px;
}

.m3-nav-app-header:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

.m3-nav-app-models {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding-left: 12px;
  margin-left: 14px;
  border-left: 2px solid var(--md-sys-color-outline-variant);
  transition: var(--md-transition-standard);
}

.m3-nav-app-group.collapsed .m3-nav-app-models {
  display: none;
}

.m3-nav-drawer.collapsed .m3-nav-app-header {
  justify-content: center;
  padding: 10px 0;
}

.m3-nav-drawer.collapsed .m3-nav-app-header .nav-text,
.m3-nav-drawer.collapsed .m3-nav-app-header .m3-nav-chevron {
  display: none;
}

.m3-nav-drawer.collapsed .m3-nav-app-models {
  padding-left: 0;
  margin-left: 0;
  border-left: none;
}

.m3-nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  border-radius: var(--md-shape-corner-full);
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--md-transition-standard);
}

.m3-nav-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

.m3-nav-item.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font-weight: 600;
}

.m3-nav-item .material-symbols-outlined {
  font-size: 22px;
}

/* Main Content Area */
.m3-main-content {
  flex: 1;
  padding: 24px;
  max-width: 100%;
  overflow-y: auto;
}

/* ==========================================
   RIGHT SIDE FILTER DRAWER / SIDE SHEET
   ========================================== */
.m3-filter-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 999;
}

.m3-filter-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.m3-filter-drawer {
  position: fixed;
  top: 0;
  right: -400px;
  width: 380px;
  max-width: 90vw;
  height: 100vh;
  background-color: var(--md-sys-color-surface-container-low);
  box-shadow: var(--md-elevation-3);
  border-left: 1px solid var(--md-sys-color-outline-variant);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.m3-filter-drawer.open {
  transform: translateX(-400px);
}

.m3-filter-drawer-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--md-sys-color-surface-container);
}

.m3-filter-drawer-body {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
}

.m3-filter-drawer-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  align-items: center;
  gap: 12px;
  background-color: var(--md-sys-color-surface-container);
}

.m3-filter-option:hover {
  background-color: var(--md-sys-color-surface-container-high) !important;
  color: var(--md-sys-color-primary) !important;
}

/* ==========================================
   HANGING FILTER TAB (aba na borda direita)
   ========================================== */
.m3-filter-tab {
  position: fixed;
  top: 50%;
  right: 0;
  transform: translateY(-50%);
  z-index: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 14px 8px;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-right: none;
  border-radius: var(--md-shape-corner-l, 16px) 0 0 var(--md-shape-corner-l, 16px);
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  box-shadow: var(--md-elevation-2);
  cursor: pointer;
  transition: var(--md-transition-standard), padding-right 0.2s ease;
}

.m3-filter-tab:hover {
  padding-right: 14px;
  box-shadow: var(--md-elevation-3);
}

.m3-filter-tab.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.m3-filter-tab .material-symbols-outlined {
  font-size: 20px;
}

.m3-filter-tab-label {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
}

.m3-filter-tab-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: var(--md-shape-corner-full);
  background-color: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
  font-size: 0.68rem;
  font-weight: 700;
}

@media (max-width: 768px) {
  .m3-filter-tab {
    padding: 10px 6px;
  }

  .m3-filter-tab-label {
    display: none;
  }
}

/* ==========================================
   FLOATING ACTION BUTTON (canto inferior direito)
   ========================================== */
/* Tom "surface", não `primary`: o pedido foi um botao discreto, que se
   camufla no canto em vez de competir com o titulo da pagina. */
.m3-fab {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-shape-corner-l, 16px);
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-primary);
  box-shadow: var(--md-elevation-2);
  cursor: pointer;
  text-decoration: none;
  z-index: 500;
  transition: var(--md-transition-standard);
}

.m3-fab:hover {
  background-color: var(--md-sys-color-surface-container-highest);
  box-shadow: var(--md-elevation-3);
  color: var(--md-sys-color-primary);
  text-decoration: none;
}

.m3-fab .material-symbols-outlined {
  font-size: 24px;
}

@media (max-width: 768px) {
  .m3-fab {
    right: 16px;
    bottom: 16px;
  }
}

/* Responsive Mobile Drawer */
@media (max-width: 768px) {
  .m3-nav-drawer {
    position: fixed;
    top: 64px;
    bottom: 0;
    left: -280px;
    z-index: 90;
    box-shadow: var(--md-elevation-3);
  }

  .m3-nav-drawer.open {
    left: 0;
  }
}