/* ============================================================
   DESIGN SYSTEM — FILA DE PEDIDOS / SECRETARIA DE ENSINO
   Baseado em: Modern Tech / Glassmorphism + Neo-Skeuomorphism
   Fonte: Urbanist (primária) + Roboto (corpo)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Urbanist:wght@400;500;600;700;800&family=Roboto:wght@400;500&display=swap');

/* ============================================================
   VARIÁVEIS
   ============================================================ */
:root {
  /* Cores base */
  --white:        #FFFFFF;
  --black:        #000000;
  --primary:      #09090B;
  --secondary:    #71717A;
  --brand:        #FD3A25;
  --brand-dark:   #d42e1b;
  --brand-light:  #fff0ee;
  --body-bg:      #EDECEC;
  --neutral-100:  #F4F4F5;
  --neutral-200:  #E4E4E7;
  --neutral-300:  #D4D4D8;
  --neutral-800:  #27272A;

  /* Tipografia */
  --font-primary:   'Urbanist', sans-serif;
  --font-body:      'Roboto', sans-serif;
  --font-size-base: 16px;
  --line-height:    1.5;

  /* Pesos */
  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;
  --fw-extrabold: 800;

  /* Espaçamentos */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;

  /* Border radius */
  --radius-sm:   8px;
  --radius-md:   16px;
  --radius-lg:   24px;
  --radius-xl:   32px;
  --radius-full: 9999px;

  /* Sombras */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.06);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.12), 0 8px 24px rgba(0,0,0,0.06);
  --shadow-brand: 0 4px 20px rgba(253,58,37,0.25);

  /* Transições */
  --transition: all 0.2s ease;
  --transition-slow: all 0.35s ease;

  /* Header */
  --header-h: 64px;

  /* Sidebar */
  --sidebar-w: 260px;
  --sidebar-w-collapsed: 72px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  color: var(--primary);
  background-color: var(--body-bg);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ============================================================
   TIPOGRAFIA
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--fw-bold);
  line-height: 1.2;
  color: var(--primary);
}

.text-display {
  font-family: var(--font-primary);
  font-size: clamp(28px, 5vw, 42px);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.03em;
}

.text-h1 { font-size: clamp(22px, 4vw, 32px); font-weight: var(--fw-bold); letter-spacing: -0.02em; }
.text-h2 { font-size: clamp(18px, 3vw, 24px); font-weight: var(--fw-bold); }
.text-h3 { font-size: 18px; font-weight: var(--fw-semibold); }
.text-h4 { font-size: 16px; font-weight: var(--fw-semibold); }
.text-body { font-size: 14px; line-height: 1.6; }
.text-small { font-size: 12px; }
.text-xs { font-size: 11px; }

.text-primary   { color: var(--primary) !important; }
.text-secondary { color: var(--secondary) !important; }
.text-brand     { color: var(--brand) !important; }
.text-white     { color: var(--white) !important; }
.text-success   { color: #16a34a !important; }
.text-danger    { color: var(--brand) !important; }
.text-warning   { color: #d97706 !important; }

.fw-regular  { font-weight: var(--fw-regular); }
.fw-medium   { font-weight: var(--fw-medium); }
.fw-semibold { font-weight: var(--fw-semibold); }
.fw-bold     { font-weight: var(--fw-bold); }

/* ============================================================
   LAYOUT — SHELL DO APP
   ============================================================ */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-w);
  min-height: 100vh;
  background: var(--white);
  border-right: 1px solid var(--neutral-200);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  transition: var(--transition-slow);
  box-shadow: var(--shadow-md);
}

.sidebar-header {
  height: var(--header-h);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--neutral-200);
  gap: var(--space-3);
}

.sidebar-logo {
  font-family: var(--font-primary);
  font-weight: var(--fw-extrabold);
  font-size: 18px;
  color: var(--primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.sidebar-logo span {
  color: var(--brand);
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) 0;
  overflow-y: auto;
}

.nav-section-label {
  font-size: 10px;
  font-weight: var(--fw-semibold);
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: var(--space-5) var(--space-6) var(--space-2);
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-6);
  font-size: 14px;
  font-weight: var(--fw-medium);
  color: var(--secondary);
  border-radius: 0;
  transition: var(--transition);
  position: relative;
  cursor: pointer;
  white-space: nowrap;
}

.nav-item:hover {
  color: var(--primary);
  background: var(--neutral-100);
}

.nav-item.active {
  color: var(--brand);
  background: var(--brand-light);
  font-weight: var(--fw-semibold);
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.nav-item .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-badge {
  margin-left: auto;
  background: var(--brand);
  color: var(--white);
  font-size: 11px;
  font-weight: var(--fw-bold);
  padding: 2px 7px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--neutral-200);
}

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

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: var(--brand);
  color: var(--white);
  font-family: var(--font-primary);
  font-weight: var(--fw-bold);
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.user-details {
  flex: 1;
  min-width: 0;
}

.user-name {
  font-size: 13px;
  font-weight: var(--fw-semibold);
  color: var(--primary);
  truncate: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.user-role {
  font-size: 11px;
  color: var(--secondary);
}

/* Main content */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: var(--transition-slow);
}

/* Top bar */
.topbar {
  height: var(--header-h);
  background: var(--white);
  border-bottom: 1px solid var(--neutral-200);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  position: sticky;
  top: 0;
  z-index: 90;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.9);
}

.topbar-title {
  font-family: var(--font-primary);
  font-size: 17px;
  font-weight: var(--fw-semibold);
  color: var(--primary);
  flex: 1;
}

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

/* Page content */
.page-content {
  flex: 1;
  padding: var(--space-8) var(--space-6);
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: var(--space-6);
  transition: var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-1px);
}

.card-flat {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-200);
  padding: var(--space-6);
}

.card-dark {
  background: var(--neutral-800);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--space-6);
  color: var(--white);
}

.card-brand {
  background: var(--brand);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-brand);
  padding: var(--space-6);
  color: var(--white);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-5);
}

.card-title {
  font-family: var(--font-primary);
  font-size: 16px;
  font-weight: var(--fw-semibold);
  color: var(--primary);
}

/* Stats card */
.stat-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: var(--transition);
}

.stat-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-icon-brand { background: var(--brand-light); color: var(--brand); }
.stat-icon-dark  { background: var(--neutral-100); color: var(--neutral-800); }
.stat-icon-green { background: #dcfce7; color: #16a34a; }
.stat-icon-amber { background: #fef9c3; color: #d97706; }

.stat-value {
  font-family: var(--font-primary);
  font-size: 28px;
  font-weight: var(--fw-bold);
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 13px;
  color: var(--secondary);
  margin-top: 3px;
}

/* ============================================================
   BOTÕES
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-primary);
  font-size: 14px;
  font-weight: var(--fw-semibold);
  border: none;
  border-radius: var(--radius-full);
  padding: 10px 22px;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--neutral-800);
  transform: scale(1.02);
}

/* Brand */
.btn-brand {
  background: var(--brand);
  color: var(--white);
  box-shadow: var(--shadow-brand);
}
.btn-brand:hover {
  background: var(--brand-dark);
  transform: scale(1.02);
}

/* Outline */
.btn-outline {
  background: var(--white);
  color: var(--primary);
  border: 1.5px solid var(--neutral-300);
  box-shadow: var(--shadow-sm);
}
.btn-outline:hover {
  border-color: var(--primary);
  background: var(--neutral-100);
}

/* Ghost */
.btn-ghost {
  background: transparent;
  color: var(--secondary);
}
.btn-ghost:hover {
  background: var(--neutral-100);
  color: var(--primary);
}

/* Danger */
.btn-danger {
  background: var(--brand);
  color: var(--white);
}
.btn-danger:hover {
  background: var(--brand-dark);
}

/* Sizes */
.btn-sm {
  font-size: 12px;
  padding: 7px 14px;
}
.btn-lg {
  font-size: 16px;
  padding: 13px 28px;
}
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-full);
}
.btn-icon-sm {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ============================================================
   FORMULÁRIOS
   ============================================================ */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: var(--fw-semibold);
  color: var(--primary);
  margin-bottom: var(--space-2);
}

.form-label .required {
  color: var(--brand);
  margin-left: 3px;
}

.form-control {
  width: 100%;
  height: 44px;
  padding: 0 var(--space-4);
  background: var(--neutral-100);
  border: 1.5px solid var(--neutral-200);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--primary);
  font-family: var(--font-body);
  transition: var(--transition);
  outline: none;
}

.form-control:focus {
  background: var(--white);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(9,9,11,0.06);
}

.form-control::placeholder {
  color: var(--neutral-300);
}

.form-control.is-invalid {
  border-color: var(--brand);
  background: var(--brand-light);
}

textarea.form-control {
  height: auto;
  padding: var(--space-3) var(--space-4);
  resize: vertical;
  min-height: 80px;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717A' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: 40px;
}

.form-hint {
  font-size: 12px;
  color: var(--secondary);
  margin-top: var(--space-1);
}

.form-error {
  font-size: 12px;
  color: var(--brand);
  margin-top: var(--space-1);
}

/* Checkbox */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form-check-input {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  border: 2px solid var(--neutral-300);
  border-radius: 5px;
  appearance: none;
  background: var(--white);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  margin-top: 2px;
}

.form-check-input:checked {
  background: var(--primary);
  border-color: var(--primary);
}

.form-check-input:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 6px;
  height: 10px;
  border: 2px solid white;
  border-top: 0;
  border-left: 0;
  transform: rotate(45deg);
}

.form-check-label {
  font-size: 14px;
  color: var(--primary);
  cursor: pointer;
  user-select: none;
}

/* Character counter */
.char-counter {
  font-size: 11px;
  color: var(--secondary);
  text-align: right;
  margin-top: 4px;
}

.char-counter.near-limit { color: #d97706; }
.char-counter.at-limit   { color: var(--brand); }

/* ============================================================
   BADGES DE STATUS
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: var(--fw-semibold);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.badge-pending      { background: #fef9c3; color: #854d0e; }
.badge-analysis     { background: #dbeafe; color: #1d4ed8; }
.badge-processing   { background: #ede9fe; color: #6d28d9; }
.badge-dispatched   { background: #d1fae5; color: #065f46; }
.badge-returned     { background: #fee2e2; color: #991b1b; }
.badge-missing      { background: #ffedd5; color: #9a3412; }
.badge-done         { background: #dcfce7; color: #14532d; }
.badge-cancelled    { background: var(--neutral-200); color: var(--secondary); }
.badge-rejected     { background: #fee2e2; color: #991b1b; }

/* Categoria */
.badge-produto  { background: #dbeafe; color: #1e40af; }
.badge-servico  { background: #ede9fe; color: #5b21b6; }

/* ============================================================
   TABELA
   ============================================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: var(--white);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table thead th {
  background: var(--neutral-100);
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: var(--fw-semibold);
  color: var(--secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: 1px solid var(--neutral-200);
  white-space: nowrap;
}

.table tbody td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--neutral-100);
  color: var(--primary);
  vertical-align: middle;
}

.table tbody tr:last-child td { border-bottom: none; }

.table tbody tr:hover td {
  background: var(--neutral-100);
}

/* ============================================================
   NOTIFICAÇÕES / ALERTAS
   ============================================================ */
.alert {
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  font-size: 14px;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.alert-success {
  background: #dcfce7;
  color: #14532d;
  border-left: 3px solid #16a34a;
}

.alert-danger {
  background: #fee2e2;
  color: #991b1b;
  border-left: 3px solid var(--brand);
}

.alert-warning {
  background: #fef9c3;
  color: #854d0e;
  border-left: 3px solid #eab308;
}

.alert-info {
  background: #dbeafe;
  color: #1e3a8a;
  border-left: 3px solid #3b82f6;
}

/* ============================================================
   NOTIFICATION BELL (topbar)
   ============================================================ */
.notif-btn {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--neutral-100);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  cursor: pointer;
  transition: var(--transition);
}

.notif-btn:hover {
  background: var(--neutral-200);
  color: var(--primary);
}

.notif-dot {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  border: 2px solid var(--white);
}

.notif-count {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--brand);
  color: var(--white);
  font-size: 10px;
  font-weight: var(--fw-bold);
  min-width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--white);
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn 0.2s ease;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.25s ease;
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--neutral-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-family: var(--font-primary);
  font-size: 18px;
  font-weight: var(--fw-bold);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--neutral-200);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ============================================================
   QR CODE
   ============================================================ */
.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  max-width: 300px;
  margin: 0 auto;
}

.qr-img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-md);
  border: 4px solid var(--neutral-100);
}

.qr-label {
  font-family: var(--font-primary);
  font-size: 13px;
  font-weight: var(--fw-semibold);
  color: var(--secondary);
  text-align: center;
}

/* QR Reader */
.qr-reader-container {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
  background: var(--black);
}

.qr-reader-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.qr-finder {
  width: 200px;
  height: 200px;
  border: 3px solid var(--brand);
  border-radius: var(--radius-lg);
  box-shadow: 0 0 0 9999px rgba(0,0,0,0.4);
}

/* ============================================================
   EMPTY STATE
   ============================================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-16) var(--space-6);
  text-align: center;
  gap: var(--space-4);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-lg);
  background: var(--neutral-100);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
}

.empty-state-title {
  font-family: var(--font-primary);
  font-size: 18px;
  font-weight: var(--fw-semibold);
  color: var(--primary);
}

.empty-state-text {
  font-size: 14px;
  color: var(--secondary);
  max-width: 300px;
}

/* ============================================================
   DIVISOR / SEPARADOR
   ============================================================ */
.divider {
  height: 1px;
  background: var(--neutral-200);
  margin: var(--space-5) 0;
}

/* ============================================================
   GRID
   ============================================================ */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--space-4); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-4); }

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

/* ============================================================
   MOBILE OVERLAY (sidebar)
   ============================================================ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}

/* Mobile hamburger */
.btn-menu {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--neutral-100);
  border: none;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--neutral-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  display: inline-block;
}

.spinner-brand {
  border-color: rgba(253,58,37,0.2);
  border-top-color: var(--brand);
}

/* ============================================================
   ANIMAÇÕES
   ============================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse-brand {
  0%, 100% { box-shadow: 0 0 0 0 rgba(253,58,37,0.3); }
  50%       { box-shadow: 0 0 0 8px rgba(253,58,37,0); }
}

.animate-fade-in   { animation: fadeIn 0.3s ease both; }
.animate-slide-up  { animation: slideUp 0.3s ease both; }
.animate-pulse-brand { animation: pulse-brand 2s infinite; }

/* Stagger para listas */
.stagger > *:nth-child(1) { animation-delay: 0.05s; }
.stagger > *:nth-child(2) { animation-delay: 0.10s; }
.stagger > *:nth-child(3) { animation-delay: 0.15s; }
.stagger > *:nth-child(4) { animation-delay: 0.20s; }
.stagger > *:nth-child(5) { animation-delay: 0.25s; }

/* ============================================================
   UTILITÁRIOS
   ============================================================ */
.d-flex         { display: flex; }
.d-none         { display: none; }
.align-center   { align-items: center; }
.justify-between{ justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-1         { flex: 1; }
.gap-2          { gap: var(--space-2); }
.gap-3          { gap: var(--space-3); }
.gap-4          { gap: var(--space-4); }
.gap-6          { gap: var(--space-6); }
.flex-wrap      { flex-wrap: wrap; }
.w-100          { width: 100%; }
.text-center    { text-align: center; }
.text-right     { text-align: right; }
.mt-2           { margin-top: var(--space-2); }
.mt-4           { margin-top: var(--space-4); }
.mt-6           { margin-top: var(--space-6); }
.mb-4           { margin-bottom: var(--space-4); }
.mb-6           { margin-bottom: var(--space-6); }
.mb-8           { margin-bottom: var(--space-8); }
.p-4            { padding: var(--space-4); }
.p-6            { padding: var(--space-6); }

/* ============================================================
   RESPONSIVIDADE — MOBILE FIRST
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --sidebar-w: 0px;
    --header-h: 56px;
  }

  .sidebar {
    width: 260px;
    left: -260px;
  }

  .sidebar.open {
    left: 0;
  }

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

  .btn-menu {
    display: flex;
  }

  .main-content {
    margin-left: 0;
  }

  .page-content {
    padding: var(--space-4);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  .modal {
    max-width: 100%;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-height: 95vh;
    margin-top: auto;
  }

  .modal-overlay {
    align-items: flex-end;
    padding: 0;
  }

  .table-wrapper {
    border-radius: var(--radius-md);
  }

  .table thead th,
  .table tbody td {
    padding: var(--space-2) var(--space-3);
    font-size: 13px;
  }

  .topbar {
    padding: 0 var(--space-4);
  }

  .topbar-title {
    font-size: 15px;
  }

  .btn-lg {
    padding: 12px 20px;
    font-size: 15px;
  }

  .qr-reader-container {
    max-width: 100%;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .card {
    padding: var(--space-4);
  }
}