/* ============================================
   CQMS - Modern Design System
   Apple-inspired, clean, minimalist aesthetic
   ============================================ */

/* ============================================
   1. ROOT VARIABLES & DESIGN TOKENS
   ============================================ */
:root {
  /* Color Palette */
  --color-primary: #007AFF;
  --color-success: #34C759;
  --color-warning: #FF9500;
  --color-danger: #FF3B30;
  --color-background: #F2F2F7;
  --color-card: #FFFFFF;
  --color-text-primary: #000000;
  --color-text-secondary: #8E8E93;
  --color-border: #C6C6C8;
  --color-separator: #E5E5EA;
  
  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Navigation */
  --nav-height: 44px;
}

/* ============================================
   2. BASE OVERRIDES
   ============================================ */
body {
  font-family: var(--font-family);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-xl);
  min-height: calc(100vh - 120px);
}

/* ============================================
   3. TYPOGRAPHY
   ============================================ */
h1, .h1 { 
  font-size: var(--font-size-3xl); 
  font-weight: 700; 
  letter-spacing: -0.5px;
  margin-bottom: var(--spacing-md);
}

h2, .h2 { 
  font-size: var(--font-size-2xl); 
  font-weight: 600; 
  letter-spacing: -0.3px;
  margin-bottom: var(--spacing-sm);
}

h3, .h3 { 
  font-size: var(--font-size-xl); 
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

h4, .h4 { 
  font-size: var(--font-size-lg); 
  font-weight: 600;
}

h5, .h5 { 
  font-size: var(--font-size-base); 
  font-weight: 600;
}

h6, .h6 { 
  font-size: var(--font-size-sm); 
  font-weight: 600; 
  text-transform: uppercase; 
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
}

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

/* ============================================
   4. LAYOUT & CONTAINERS
   ============================================ */
.container-fluid,
.container {
  padding-left: 75px !important;
  padding-right: 75px !important;
}

@media (max-width: 767.98px) {
  .container-fluid,
  .container {
    padding-left: var(--spacing-md) !important;
    padding-right: var(--spacing-md) !important;
  }
}

@media (max-width: 575.98px) {
  .container-fluid,
  .container {
    padding-left: var(--spacing-sm) !important;
    padding-right: var(--spacing-sm) !important;
  }
}

main {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-xl);
}

/* ============================================
   5. NAVIGATION
   ============================================ */
.navbar {
  background: rgba(255, 255, 255, 0.8) !important;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-separator);
  box-shadow: none !important;
  min-height: var(--nav-height);
  padding: 0 var(--spacing-sm);
  z-index: 1030;
  position: relative;
}

.navbar-brand {
  font-weight: 700;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary) !important;
  letter-spacing: -0.3px;
}

.navbar-nav .nav-link {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary) !important;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  margin: 0 4px;
}

.navbar-nav .nav-link:hover {
  background-color: rgba(0, 122, 255, 0.1);
  color: var(--color-primary) !important;
}

.navbar-nav .nav-link.active {
  background-color: var(--color-primary);
  color: white !important;
}

.dropdown-menu {
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xs);
  margin-top: var(--spacing-xs);
  z-index: 1050;
}

.dropdown-item {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
  margin-bottom: 2px;
}

.dropdown-item:hover {
  background-color: var(--color-background);
  color: var(--color-primary);
}

/* ============================================
   6. CARDS & CONTAINERS
   ============================================ */
.card {
  background: var(--color-card);
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
  margin-bottom: var(--spacing-sm);
}

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

.card-header {
  background-color: transparent;
  border-bottom: 1px solid var(--color-separator);
  font-weight: 600;
  font-size: var(--font-size-lg);
  padding: var(--spacing-sm) var(--spacing-md);
}

.card-body {
  padding: var(--spacing-md);
}

.card-footer {
  background-color: transparent;
  border-top: 1px solid var(--color-separator);
  padding: var(--spacing-sm) var(--spacing-md);
}

/* ============================================
   7. FORMS & INPUTS
   ============================================ */
.form-label {
  font-weight: 500;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.form-control,
.form-select {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px var(--spacing-sm);
  font-size: var(--font-size-base);
  transition: all var(--transition-fast);
  background-color: var(--color-card);
}

.form-control:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
  outline: none;
}

.form-control::placeholder {
  color: var(--color-text-secondary);
}

textarea.form-control {
  resize: vertical;
  min-height: 100px;
}

.form-check-input {
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  transition: all var(--transition-fast);
}

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

.form-check-input:focus {
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
  border-color: var(--color-primary);
}

.form-check-label {
  font-size: var(--font-size-base);
  margin-left: var(--spacing-xs);
}

.form-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-xs);
}

.input-group {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.input-group-text {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

/* ============================================
   8. BUTTONS
   ============================================ */
.btn {
  border: none;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-base);
  padding: 12px var(--spacing-md);
  transition: all var(--transition-base);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-primary) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
  border: none !important;
}

.btn-primary:hover {
  background-color: #0051D5 !important;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.4);
  transform: translateY(-1px);
}

.btn-success {
  background-color: var(--color-success) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(52, 199, 89, 0.3);
  border: none !important;
}

.btn-success:hover {
  background-color: #28A745 !important;
  box-shadow: 0 4px 12px rgba(52, 199, 89, 0.4);
  transform: translateY(-1px);
}

.btn-warning {
  background-color: var(--color-warning) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(255, 149, 0, 0.3);
  border: none !important;
}

.btn-warning:hover {
  background-color: #E68A00 !important;
  box-shadow: 0 4px 12px rgba(255, 149, 0, 0.4);
  transform: translateY(-1px);
}

.btn-danger,
.btn-outline-danger {
  background-color: var(--color-danger) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(255, 59, 48, 0.3);
  border: none !important;
}

.btn-danger:hover,
.btn-outline-danger:hover {
  background-color: #D70015 !important;
  box-shadow: 0 4px 12px rgba(255, 59, 48, 0.4);
  transform: translateY(-1px);
  color: white !important;
}

.btn-secondary {
  background-color: var(--color-background) !important;
  color: var(--color-text-primary) !important;
  border: none !important;
}

.btn-secondary:hover {
  background-color: #E0E0E5 !important;
  transform: translateY(-1px);
}

.btn-info {
  background-color: var(--color-primary) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(0, 122, 255, 0.3);
  border: none !important;
}

.btn-info:hover {
  background-color: #0051D5 !important;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.4);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px var(--spacing-sm);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px var(--spacing-lg);
  font-size: var(--font-size-lg);
}

.btn-link {
  color: var(--color-primary);
  text-decoration: none;
  padding: 0;
  background: none !important;
  box-shadow: none !important;
}

.btn-link:hover {
  color: #0051D5;
  text-decoration: underline;
  transform: none;
}

/* ============================================
   9. TABLES
   ============================================ */
.table-responsive {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  background: var(--color-card);
}

.table {
  margin-bottom: 0;
  font-size: var(--font-size-sm);
}

.table thead th {
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-separator);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-secondary);
  padding: var(--spacing-sm);
  border-top: none;
}

.table tbody tr {
  border-bottom: 1px solid var(--color-separator);
  transition: background-color var(--transition-fast);
}

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

.table tbody tr:hover {
  background-color: rgba(0, 122, 255, 0.05);
}

.table td {
  padding: var(--spacing-sm);
  vertical-align: middle;
  border-top: none;
}

.table-hover tbody tr:hover {
  background-color: rgba(0, 122, 255, 0.05);
}

/* ============================================
   10. BADGES & STATUS INDICATORS
   ============================================ */
.badge {
  padding: 4px 12px;
  border-radius: 12px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.3px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

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

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

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

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

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

/* ============================================
   11. MODALS & DIALOGS
   ============================================ */
.modal-content {
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.modal-header {
  background-color: transparent;
  border-bottom: 1px solid var(--color-separator);
  padding: var(--spacing-md);
}

.modal-title {
  font-weight: 600;
  font-size: var(--font-size-xl);
}

.modal-body {
  padding: var(--spacing-md);
}

.modal-footer {
  background-color: transparent;
  border-top: 1px solid var(--color-separator);
  padding: var(--spacing-md);
  gap: var(--spacing-sm);
}

.modal.fade .modal-dialog {
  transition: transform var(--transition-base);
}

.modal.show .modal-dialog {
  transform: translateY(0);
}

.modal-backdrop {
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-close {
  opacity: 0.5;
  transition: opacity var(--transition-fast);
}

.btn-close:hover {
  opacity: 1;
}

/* ============================================
   12. ALERTS & NOTIFICATIONS
   ============================================ */
.alert {
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-sm);
}

.alert-success {
  background-color: rgba(52, 199, 89, 0.1);
  color: var(--color-success);
  border-left: 4px solid var(--color-success);
}

.alert-danger {
  background-color: rgba(255, 59, 48, 0.1);
  color: var(--color-danger);
  border-left: 4px solid var(--color-danger);
}

.alert-warning {
  background-color: rgba(255, 149, 0, 0.1);
  color: var(--color-warning);
  border-left: 4px solid var(--color-warning);
}

.alert-info {
  background-color: rgba(0, 122, 255, 0.1);
  color: var(--color-primary);
  border-left: 4px solid var(--color-primary);
}

/* ============================================
   13. LOADING & ANIMATIONS
   ============================================ */
.spinner-border {
  width: 24px;
  height: 24px;
  border-width: 3px;
  border-color: var(--color-primary);
  border-right-color: transparent;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.fade-in {
  animation: fadeIn var(--transition-base);
}

.slide-up {
  animation: slideUp var(--transition-base);
}

/* ============================================
   14. FOOTER
   ============================================ */
.footer {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-separator);
  padding: var(--spacing-md) 0;
  margin-top: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ============================================
   15. UTILITY CLASSES
   ============================================ */
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }

.rounded-sm { border-radius: var(--radius-sm) !important; }
.rounded-md { border-radius: var(--radius-md) !important; }
.rounded-lg { border-radius: var(--radius-lg) !important; }

/* ============================================
   16. RESPONSIVE ADJUSTMENTS
   ============================================ */
@media (max-width: 767.98px) {
  :root {
    --font-size-3xl: 24px;
    --font-size-2xl: 20px;
    --font-size-xl: 18px;
  }
  
  .table th,
  .table td {
    padding: var(--spacing-xs);
    font-size: var(--font-size-xs);
  }
  
  .btn {
    padding: 10px var(--spacing-sm);
    font-size: var(--font-size-sm);
  }
  
  .card-body {
    padding: var(--spacing-sm);
  }
  
  .modal-body,
  .modal-header,
  .modal-footer {
    padding: var(--spacing-sm);
  }
}

@media (max-width: 575.98px) {
  h1, .h1 { font-size: 24px; }
  h2, .h2 { font-size: 20px; }
  h3, .h3 { font-size: 18px; }
}