:root {
  /* Denim Blue and White Theme */
  --primary-denim: #4A6FA5;
  --primary-denim-dark: #3B5998;
  --primary-denim-light: #6B8DD6;
  --secondary-denim: #8FA4D3;
  --accent-denim: #2E4F8C;
  --white: #FFFFFF;
  --light-gray: #F8F9FA;
  --medium-gray: #E9ECEF;
  --dark-gray: #495057;
  --text-dark: #2C3E50;
  --success: #28A745;
  --warning: #FFC107;
  --danger: #DC3545;
  --info: #17A2B8;
}

html {
  font-size: 12px;
  scroll-behavior: smooth;
}

@media (min-width: 768px) {
  html {
    font-size: 13px;
  }
}

@media (min-width: 1200px) {
  html {
    font-size: 14px;
  }
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--primary-denim-light);
}

html {
  position: relative;
  min-height: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, var(--white) 0%, var(--light-gray) 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--text-dark);
  line-height: 1.6;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

/* Enhanced Navbar Styling - Denim Theme */
.navbar-dark {
  background: linear-gradient(135deg, var(--primary-denim) 0%, var(--primary-denim-dark) 100%) !important;
  box-shadow: 0 2px 20px rgba(74, 111, 165, 0.3);
  border-bottom: 3px solid var(--accent-denim);
}

.navbar-dark .navbar-nav .nav-link {
  transition: all 0.3s ease;
  position: relative;
  color: var(--white) !important;
  font-weight: 500;
  padding: 0.75rem 1rem !important;
  border-radius: 0.5rem;
  margin: 0 0.25rem;
}

.navbar-dark .navbar-nav .nav-link:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  color: var(--white) !important;
}

.navbar-dark .navbar-nav .nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: var(--white);
  transition: all 0.3s ease;
  transform: translateX(-50%);
  border-radius: 2px;
}

.navbar-dark .navbar-nav .nav-link:hover::before {
  width: 80%;
}

.navbar-brand {
  font-weight: 700 !important;
  color: var(--white) !important;
  font-size: 1.5rem !important;
}

.navbar-brand:hover {
  color: var(--white) !important;
  transform: scale(1.05);
}

/* Card Enhancements - Denim Theme */
.card {
  border: none;
  background: var(--white);
  box-shadow: 0 4px 20px rgba(74, 111, 165, 0.1);
  transition: all 0.3s ease;
  border-radius: 1rem;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(74, 111, 165, 0.2);
}

.card-header {
  background: linear-gradient(135deg, var(--primary-denim) 0%, var(--primary-denim-light) 100%);
  color: var(--white);
  border-bottom: none;
  font-weight: 600;
  padding: 1.25rem 1.5rem;
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  background: var(--light-gray);
  border-top: 1px solid var(--medium-gray);
}

/* Button Enhancements - Denim Theme */
.btn {
  border-radius: 0.75rem;
  font-weight: 600;
  transition: all 0.3s ease;
  padding: 0.75rem 1.5rem;
  border: none;
  text-transform: none;
  letter-spacing: 0.5px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-denim) 0%, var(--primary-denim-dark) 100%);
  color: var(--white);
  border: none;
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-denim-dark) 0%, var(--accent-denim) 100%);
  color: var(--white);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary-denim) 0%, var(--primary-denim-light) 100%);
  color: var(--white);
  border: none;
}

.btn-outline-primary {
  border: 2px solid var(--primary-denim);
  color: var(--primary-denim);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary-denim);
  color: var(--white);
  border-color: var(--primary-denim);
}

.btn-success {
  background: linear-gradient(135deg, var(--success) 0%, #20c997 100%);
  border: none;
}

.btn-warning {
  background: linear-gradient(135deg, var(--warning) 0%, #fd7e14 100%);
  border: none;
  color: var(--text-dark);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger) 0%, #c82333 100%);
  border: none;
}

.btn-info {
  background: linear-gradient(135deg, var(--info) 0%, #138496 100%);
  border: none;
}

/* WhatsApp Theme Colors */
.whatsapp-green {
  background-color: #25D366 !important;
}

.whatsapp-dark {
  background-color: #075E54 !important;
}

/* Animation Classes */
.fade-in {
  animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
  100% { transform: scale(1); opacity: 1; }
}

/* Loading Spinner */
.spinner-border-sm {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .display-3 {
    font-size: 2.5rem;
  }
  
  .hero-content {
    text-align: center;
  }
  
  .phone-mockup {
    margin-top: 2rem;
  }
}

/* Footer Enhancements */
footer {
  margin-top: auto;
}

/* Table Enhancements - Denim Theme */
.table {
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(74, 111, 165, 0.1);
  background: var(--white);
}

.table thead th {
  background: linear-gradient(135deg, var(--primary-denim) 0%, var(--primary-denim-dark) 100%);
  color: var(--white);
  border: none;
  font-weight: 600;
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table tbody tr {
  transition: all 0.3s ease;
}

.table tbody tr:hover {
  background-color: rgba(74, 111, 165, 0.05);
  transform: scale(1.01);
}

.table tbody td {
  padding: 1rem 1.25rem;
  border-color: var(--medium-gray);
  vertical-align: middle;
}

.table-light thead th {
  background: var(--light-gray);
  color: var(--text-dark);
}

/* Badge Enhancements - Denim Theme */
.badge {
  font-weight: 600;
  padding: 0.6em 1em;
  border-radius: 2rem;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
}

.badge.bg-primary {
  background: var(--primary-denim) !important;
}

.badge.bg-secondary {
  background: var(--secondary-denim) !important;
}

.badge.bg-success {
  background: var(--success) !important;
}

.badge.bg-warning {
  background: var(--warning) !important;
  color: var(--text-dark) !important;
}

.badge.bg-danger {
  background: var(--danger) !important;
}

.badge.bg-info {
  background: var(--info) !important;
}

.badge.bg-light {
  background: var(--light-gray) !important;
  color: var(--text-dark) !important;
  border: 1px solid var(--medium-gray);
}

/* Status Indicators */
.status-online {
  color: #28a745;
}

.status-offline {
  color: #dc3545;
}

.status-pending {
  color: #ffc107;
}

/* Chat Interface Styling */
.chat-container {
  background: #f8f9fa;
  border-radius: 1rem;
  max-height: 500px;
  overflow-y: auto;
}

.message-bubble {
  max-width: 70%;
  word-wrap: break-word;
  animation: slideIn 0.3s ease;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

.message-sent .message-bubble {
  background: linear-gradient(135deg, #007bff, #0056b3);
  margin-left: auto;
}

.message-received .message-bubble {
  background: white;
  border: 1px solid #e9ecef;
}

/* Form Enhancements - Denim Theme */
.form-control, .form-select {
  border-radius: 0.75rem;
  border: 2px solid var(--medium-gray);
  transition: all 0.3s ease;
  padding: 0.75rem 1rem;
  font-weight: 500;
  background: var(--white);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-denim);
  box-shadow: 0 0 0 0.2rem rgba(74, 111, 165, 0.25);
  transform: translateY(-1px);
  background: var(--white);
}

.form-label {
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.input-group-text {
  background: var(--primary-denim);
  color: var(--white);
  border: 2px solid var(--primary-denim);
  font-weight: 600;
}

/* Admin Panel Specific - Denim Theme */
.admin-card {
  background: var(--white);
  border-radius: 1.25rem;
  padding: 2rem;
  box-shadow: 0 6px 30px rgba(74, 111, 165, 0.15);
  margin-bottom: 2rem;
  border: 1px solid rgba(74, 111, 165, 0.1);
}

.admin-card h5 {
  color: var(--primary-denim-dark);
  font-weight: 700;
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

/* Professional Page Headers */
.page-header {
  background: linear-gradient(135deg, var(--primary-denim) 0%, var(--primary-denim-dark) 100%);
  color: var(--white);
  padding: 2rem 0;
  margin-bottom: 2rem;
  border-radius: 0 0 2rem 2rem;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  font-weight: 400;
}

/* Professional Navigation */
.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 1.5rem;
}

.breadcrumb-item {
  color: var(--primary-denim);
  font-weight: 500;
}

.breadcrumb-item.active {
  color: var(--text-dark);
}

.breadcrumb-item + .breadcrumb-item::before {
  color: var(--secondary-denim);
  content: "/";
}

/* Professional Spacing */
.section-spacing {
  margin-bottom: 3rem;
}

.content-wrapper {
  padding: 2rem 0;
}

/* Professional Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-dark);
  font-weight: 600;
  line-height: 1.3;
}

.text-primary {
  color: var(--primary-denim) !important;
}

.text-secondary {
  color: var(--secondary-denim) !important;
}

.bg-primary {
  background: linear-gradient(135deg, var(--primary-denim) 0%, var(--primary-denim-dark) 100%) !important;
}

.bg-secondary {
  background: var(--secondary-denim) !important;
}

/* Professional Shadows */
.shadow-sm {
  box-shadow: 0 2px 10px rgba(74, 111, 165, 0.1) !important;
}

.shadow {
  box-shadow: 0 4px 20px rgba(74, 111, 165, 0.15) !important;
}

.shadow-lg {
  box-shadow: 0 8px 40px rgba(74, 111, 165, 0.2) !important;
}

/* Alert Enhancements - Denim Theme */
.alert {
  border: none;
  border-radius: 1rem;
  padding: 1.25rem 1.5rem;
  font-weight: 500;
  border-left: 4px solid;
}

.alert-primary {
  background: linear-gradient(135deg, rgba(74, 111, 165, 0.1), rgba(74, 111, 165, 0.05));
  color: var(--primary-denim-dark);
  border-left-color: var(--primary-denim);
}

.alert-success {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.1), rgba(40, 167, 69, 0.05));
  color: #155724;
  border-left-color: var(--success);
}

.alert-warning {
  background: linear-gradient(135deg, rgba(255, 193, 7, 0.1), rgba(255, 193, 7, 0.05));
  color: #856404;
  border-left-color: var(--warning);
}

.alert-danger {
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.1), rgba(220, 53, 69, 0.05));
  color: #721c24;
  border-left-color: var(--danger);
}

.alert-info {
  background: linear-gradient(135deg, rgba(23, 162, 184, 0.1), rgba(23, 162, 184, 0.05));
  color: #0c5460;
  border-left-color: var(--info);
}