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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --secondary: #6b7280;
  --success: #16a34a;
  --warning: #f59e0b;
  --danger: #dc2626;
  --bg: #f8fafc;
  --surface: #ffffff;
  --text: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.app-container {
  min-height: 100vh;
}

.app-header {
  background: linear-gradient(135deg, var(--primary) 0%, #1e40af 100%);
  color: white;
  padding: 1rem 2rem;
  box-shadow: var(--shadow-lg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.logo-icon {
  font-size: 2rem;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
}

.subtitle {
  font-size: 0.75rem;
  opacity: 0.85;
}

.header-nav {
  display: flex;
  gap: 0.5rem;
}

.nav-btn {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.2);
  color: white;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

.nav-btn:hover {
  background: rgba(255,255,255,0.25);
}

.nav-btn.active {
  background: white;
  color: var(--primary);
  font-weight: 600;
}

.app-main {
  padding: 1.5rem 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.tab-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.tab-header h2 {
  font-size: 1.5rem;
  color: var(--text);
}

.filter-bar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  background: var(--surface);
  padding: 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  min-width: 180px;
}

.filter-group label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
}

.filter-group input,
.filter-group select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
}

.filter-group input:focus,
.filter-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.table-container {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: #f1f5f9;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: sticky;
  top: 0;
}

.data-table tbody tr:hover {
  background: #f8fafc;
}

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

.status-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.status-badge.Resolvido {
  background: #dcfce7;
  color: #16a34a;
}

.status-badge["Em Andamento"] {
  background: #fef3c7;
  color: #d97706;
}

.status-badge.Pendente {
  background: #fee2e2;
  color: #dc2626;
}

.btn {
  padding: 0.5rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
}

.btn-secondary {
  background: var(--secondary);
  color: white;
}

.btn-secondary:hover {
  background: #4b5563;
}

.btn-danger {
  background: var(--danger);
  color: white;
}

.btn-danger:hover {
  background: #b91c1c;
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8rem;
}

.btn-icon {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  font-size: 1.1rem;
}

.btn-icon:hover {
  background: #f1f5f9;
}

.action-btns {
  display: flex;
  gap: 0.25rem;
}

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding: 1rem;
}

.pagination button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  cursor: pointer;
}

.pagination button:hover {
  background: #f1f5f9;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.pagination span {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-overlay.hidden {
  display: none;
}

.modal {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  max-height: 90vh;
  overflow-y: auto;
  width: 90%;
}

.modal-sm { max-width: 450px; }
.modal-lg { max-width: 800px; }

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.modal-header h2 {
  font-size: 1.25rem;
}

.close-btn {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0.25rem;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 600;
  font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

/* Profile Styles */
.profile-header {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: #f8fafc;
  border-radius: var(--radius);
}

.profile-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
}

.profile-info h3 {
  font-size: 1.4rem;
  margin-bottom: 0.25rem;
}

.profile-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.profile-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.detail-item {
  padding: 0.75rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.detail-item label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  font-weight: 600;
}

.detail-item p {
  font-size: 1rem;
  margin-top: 0.25rem;
}

.interactions-timeline {
  margin-top: 2rem;
}

.interactions-timeline h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-light);
}

.timeline-item {
  padding: 1rem;
  border-left: 3px solid var(--primary);
  margin-bottom: 1rem;
  background: #fafbfc;
  border-radius: 0 var(--radius) var(--radius) 0;
}

.timeline-item .timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.timeline-item .timeline-date {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.timeline-item .timeline-type {
  font-weight: 600;
  color: var(--primary);
}

.timeline-item .timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.timeline-item .timeline-resolution {
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: #f0fdf4;
  border-radius: var(--radius);
  font-size: 0.85rem;
  color: var(--success);
}

.loading {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
}

.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
}

/* Toast notifications */
#toast-container {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  color: white;
  font-size: 0.9rem;
  box-shadow: var(--shadow-lg);
  animation: slideIn 0.3s ease-out;
  min-width: 280px;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--primary); }

@keyframes slideIn {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

@media (max-width: 768px) {
  .app-header { padding: 1rem; }
  .app-main { padding: 1rem; }
  .filter-bar { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; }
  .profile-header { flex-direction: column; text-align: center; }
}