:root {
  --primary: #2563EB; /* Blue primary color */
  --primary-dark: #1D4ED8;
  --primary-light: #3B82F6;
  --primary-extra-light: #EFF6FF;
  --secondary: #1E40AF;
  --secondary-light: #DBEAFE;
  --dark: #111827;
  --light: #FFFFFF;
  --gray: #9CA3AF;
  --gray-dark: #6B7280;
  --gray-light: #E5E7EB;
  --gray-extra-light: #F9FAFB;
  --success: #10B981;
  --success-light: #D1FAE5;
  --warning: #F59E0B;
  --warning-light: #FEF3C7;
  --danger: #EF4444;
  --danger-light: #FEE2E2;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: #F3F4F6;
  color: var(--dark);
  min-height: 100vh;
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
  position: relative;
}

.header {
  text-align: center;
  margin-bottom: 3rem;
  position: relative;
}

.title-icon {
  font-size: 3.5rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  display: inline-flex;
  width: 80px;
  height: 80px;
  background-color: var(--primary-extra-light);
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.15);
}

h1 {
  color: var(--primary-dark);
  margin-bottom: 1rem;
  font-size: 2.75rem;
  font-weight: 800;
  position: relative;
  display: inline-block;
  line-height: 1.2;
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h1::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  border-radius: 2px;
}

.subtitle {
  color: var(--gray-dark);
  font-size: 1.15rem;
  max-width: 700px;
  margin: 1.5rem auto 0;
  font-weight: 400;
  line-height: 1.7;
}

.stats-container {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin: 3rem 0;
}

.stats-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background-color: white;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-light);
  transition: var(--transition);
  min-width: 240px;
  flex: 1;
  max-width: 300px;
}

.stats-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stats-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius);
  background-color: var(--primary-extra-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
  flex-shrink: 0;
}

.stats-content {
  text-align: left;
}

.stats-label {
  font-size: 0.875rem;
  color: var(--gray-dark);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.stats-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--primary-dark);
  line-height: 1;
}

.card {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
  border: 1px solid var(--gray-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to bottom, var(--primary), var(--primary-dark));
}

.card-header {
  margin-bottom: 2rem;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-title i {
  color: var(--primary);
}

.card-description {
  color: var(--gray-dark);
  font-size: 1rem;
  line-height: 1.7;
}

.input-group {
  position: relative;
  margin-bottom: 2rem;
}

.input-label {
  display: block;
  margin-bottom: 0.75rem;
  font-weight: 500;
  color: var(--dark);
  font-size: 1rem;
}

.input-field {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  z-index: 2;
  font-size: 1.1rem;
}

input {
  width: 100%;
  padding: 1rem 1rem 1rem 3.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-light);
  background-color: var(--light);
  color: var(--dark);
  font-size: 1rem;
  transition: var(--transition);
  font-family: 'Inter', sans-serif;
  box-shadow: var(--shadow);
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

input::placeholder {
  color: var(--gray);
  opacity: 0.7;
}

.button-group {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

button {
  flex: 1;
  padding: 1.1rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  box-shadow: var(--shadow);
}

#checkBtn {
  background-color: var(--light);
  color: var(--dark);
  border: 1px solid var(--gray-light);
}

#checkBtn:hover {
  background-color: var(--gray-extra-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

#addBtn {
  background-color: var(--primary);
  color: white;
}

#addBtn:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.status-display {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  color: var(--dark);
  font-size: 1rem;
  border-left: 4px solid var(--gray);
  transition: var(--transition);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background-color: var(--gray-extra-light);
  line-height: 1.7;
}

.status-display i {
  margin-top: 0.15rem;
  font-size: 1.2rem;
}

.status-display.success {
  background-color: var(--success-light);
  border-left-color: var(--success);
}

.status-display.error {
  background-color: var(--danger-light);
  border-left-color: var(--danger);
}

.status-display.warning {
  background-color: var(--warning-light);
  border-left-color: var(--warning);
}

h2 {
  color: var(--dark);
  font-size: 1.75rem;
  margin: 3rem 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--gray-light);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
}

h2::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-dark));
  border-radius: 2px;
}

h2 i {
  color: var(--primary);
}

.table-container {
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  margin-bottom: 3rem;
  border: 1px solid var(--gray-light);
}

.table-container:hover {
  box-shadow: var(--shadow-lg);
}

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

th, td {
  padding: 1.25rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--gray-light);
}

th {
  background-color: var(--primary-dark);
  color: white;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

tr:not(:last-child) td {
  border-bottom: 1px solid var(--gray-light);
}

tr:hover td {
  background-color: var(--primary-extra-light);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.status-active {
  background-color: var(--success-light);
  color: var(--success);
}

.status-inactive {
  background-color: var(--danger-light);
  color: var(--danger);
}

.empty-state {
  text-align: center;
  padding: 3rem;
  color: var(--gray);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.empty-icon {
  font-size: 3rem;
  color: var(--gray-light);
  opacity: 0.7;
}

.empty-text {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--gray-dark);
}

.empty-subtext {
  font-size: 1rem;
  max-width: 400px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background-color: var(--primary-dark);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 1000;
  max-width: 350px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.success {
  background-color: var(--success);
}

.toast.error {
  background-color: var(--danger);
}

.toast.warning {
  background-color: var(--warning);
}

.toast-icon {
  font-size: 1.25rem;
}

/* Loading spinner */
.spinner {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 1s ease-in-out infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1.5rem;
  }

  .title-icon {
    font-size: 2.5rem;
    width: 70px;
    height: 70px;
  }

  h1 {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1rem;
  }

  .button-group {
    flex-direction: column;
  }

  button {
    width: 100%;
  }

  .card {
    padding: 2rem;
  }

  .stats-container {
    flex-direction: column;
    align-items: stretch;
  }

  .stats-card {
    width: 100%;
    max-width: 100%;
  }
}

/* Floating action button */
.fab {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-xl);
  cursor: pointer;
  transition: var(--transition);
  z-index: 100;
  border: none;
  opacity: 0;
  transform: translateY(20px);
}

.fab.visible {
  opacity: 1;
  transform: translateY(0);
}

.fab:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px) scale(1.05);
}

.fab i {
  font-size: 1.5rem;
}

/* Tooltip */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  width: 200px;
  background-color: var(--dark);
  color: var(--light);
  text-align: center;
  border-radius: var(--radius-sm);
  padding: 0.5rem;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
  font-size: 0.8rem;
  font-weight: 400;
  box-shadow: var(--shadow-md);
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}

/* Number format helper */
.format-helper {
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Action buttons */
.action-btn {
  background: none;
  border: none;
  color: var(--gray);
  cursor: pointer;
  transition: var(--transition);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
}

.action-btn:hover {
  color: var(--danger);
  background-color: var(--danger-light);
}

/* Confirmation modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background-color: white;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  transform: translateY(20px);
  transition: var(--transition);
}

.modal-overlay.active .modal {
  transform: translateY(0);
}

.modal-header {
  margin-bottom: 1.5rem;
}

.modal-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.5rem;
}

.modal-body {
  margin-bottom: 2rem;
  color: var(--gray-dark);
  line-height: 1.7;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 1rem;
}

.modal-btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  box-shadow: var(--shadow);
}

.modal-btn-cancel {
  background-color: var(--light);
  color: var(--dark);
  border: 1px solid var(--gray-light);
}

.modal-btn-cancel:hover {
  background-color: var(--gray-extra-light);
}

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

.modal-btn-confirm:hover {
  background-color: #dc2626;
}

/* WhatsApp branding */
.whatsapp-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-dark);
  font-weight: 600;
}

.whatsapp-brand i {
  color: var(--primary);
  font-size: 1.2rem;
}