/* =========================================== */
/* UX/UI CONSISTENCY SYSTEM */
/* Unified design tokens and patterns */
/* Ensures consistent UX/UI across all pages */
/* =========================================== */

:root {
  /* ===== ANIMATION TIMING (Consistent across all interactions) ===== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Easing functions */
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* ===== FOCUS STATES (Accessibility & Consistency) ===== */
  --focus-ring-width: 2px;
  --focus-ring-offset: 2px;
  --focus-ring-color: var(--brand-primary, #6366f1);
  --focus-ring-opacity: 0.5;
  --focus-ring: 0 0 0 var(--focus-ring-width) var(--focus-ring-color),
                0 0 0 calc(var(--focus-ring-width) + var(--focus-ring-offset)) rgba(var(--brand-primary-rgb, 99, 102, 241), var(--focus-ring-opacity));
  
  /* ===== HOVER STATES (Consistent elevation & transform) ===== */
  --hover-elevation: 0 4px 12px rgba(0, 0, 0, 0.15);
  --hover-transform: translateY(-2px);
  --hover-scale: scale(1.02);
  --hover-opacity: 0.9;
  
  /* ===== ACTIVE STATES ===== */
  --active-transform: translateY(0);
  --active-scale: scale(0.98);
  --active-elevation: 0 2px 4px rgba(0, 0, 0, 0.1);
  
  /* ===== SHADOWS (Consistent elevation system) ===== */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.18);
  --shadow-2xl: 0 16px 32px rgba(0, 0, 0, 0.2);
  
  /* Brand-colored shadows */
  --shadow-brand-sm: 0 2px 8px rgba(var(--brand-primary-rgb, 99, 102, 241), 0.2);
  --shadow-brand-md: 0 4px 12px rgba(var(--brand-primary-rgb, 99, 102, 241), 0.3);
  --shadow-brand-lg: 0 8px 24px rgba(var(--brand-primary-rgb, 99, 102, 241), 0.4);
  
  /* ===== BORDER STYLES (Consistent borders) ===== */
  --border-width-thin: 1px;
  --border-width-base: 2px;
  --border-width-thick: 3px;
  --border-color-light: rgba(0, 0, 0, 0.08);
  --border-color-medium: rgba(0, 0, 0, 0.12);
  --border-color-dark: rgba(0, 0, 0, 0.2);
  
  /* ===== OPACITY VALUES (Consistent transparency) ===== */
  --opacity-disabled: 0.5;
  --opacity-hover: 0.8;
  --opacity-overlay: 0.6;
  --opacity-backdrop: 0.4;
  
  /* ===== Z-INDEX LAYERS (Consistent stacking) ===== */
  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  --z-overlay: 1090;
  --z-max: 9999;
}

/* ===== DARK MODE OVERRIDES ===== */
[data-bs-theme="dark"] {
  --border-color-light: rgba(255, 255, 255, 0.1);
  --border-color-medium: rgba(255, 255, 255, 0.15);
  --border-color-dark: rgba(255, 255, 255, 0.25);
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.6);
}

/* ===== UNIFIED BUTTON STYLES ===== */
.btn {
  /* Base button styles */
  font-weight: var(--font-weight-semibold, 600);
  transition: var(--transition-base);
  border-radius: var(--radius-button, 0.5rem);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm, 0.5rem);
  text-decoration: none;
  border: var(--border-width-base) solid transparent;
  position: relative;
  overflow: hidden;
}

/* Button hover states */
.btn:hover:not(:disabled) {
  transform: var(--hover-transform);
  box-shadow: var(--hover-elevation);
}

.btn:active:not(:disabled) {
  transform: var(--active-transform);
  box-shadow: var(--active-elevation);
}

/* Button focus states */
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Button disabled states */
.btn:disabled,
.btn.disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  pointer-events: none;
}

/* ===== UNIFIED FORM INPUT STYLES ===== */
.form-control,
.form-select,
textarea {
  transition: var(--transition-base);
  border-radius: var(--radius-input, 0.5rem);
  border: var(--border-width-base) solid var(--border-color-medium);
  padding: var(--input-padding-y, 0.75rem) var(--input-padding-x, 1rem);
}

.form-control:focus,
.form-select:focus,
textarea:focus {
  outline: none;
  border-color: var(--brand-primary, #6366f1);
  box-shadow: var(--focus-ring);
}

.form-control:disabled,
.form-select:disabled,
textarea:disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  background-color: var(--bg-secondary, #f8fafc);
}

/* Form validation states */
.form-control.is-invalid {
  border-color: var(--color-error, #ef4444);
}

.form-control.is-valid {
  border-color: var(--color-success, #10b981);
}

/* ===== UNIFIED CARD STYLES ===== */
.card {
  border-radius: var(--radius-card, 0.75rem);
  border: var(--border-width-thin) solid var(--border-color-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  overflow: hidden;
}

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

/* ===== UNIFIED LINK STYLES ===== */
a {
  transition: var(--transition-fast);
  text-decoration: none;
}

a:hover {
  opacity: var(--opacity-hover);
}

a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: 2px;
}

/* ===== UNIFIED BADGE STYLES ===== */
.badge {
  border-radius: var(--radius-badge, 9999px);
  font-weight: var(--font-weight-semibold, 600);
  padding: var(--spacing-xs, 0.25rem) var(--spacing-sm, 0.5rem);
  font-size: var(--font-size-xs, 0.75rem);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs, 0.25rem);
}

/* ===== UNIFIED MODAL STYLES ===== */
.modal {
  --modal-border-radius: var(--radius-modal, 1rem);
}

.modal-content {
  border-radius: var(--modal-border-radius);
  border: none;
  box-shadow: var(--shadow-2xl);
}

/* ===== UNIFIED DROPDOWN STYLES ===== */
.dropdown-menu {
  border-radius: var(--radius-dropdown, 0.5rem);
  border: var(--border-width-thin) solid var(--border-color-light);
  box-shadow: var(--shadow-lg);
  padding: var(--spacing-xs, 0.25rem);
}

.dropdown-item {
  border-radius: calc(var(--radius-dropdown, 0.5rem) - 2px);
  transition: var(--transition-fast);
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
}

.dropdown-item:hover,
.dropdown-item:focus {
  background-color: var(--bg-secondary, #f8fafc);
}

/* ===== UNIFIED TOOLTIP STYLES ===== */
.tooltip {
  --tooltip-border-radius: var(--radius-sm, 0.25rem);
}

.tooltip-inner {
  border-radius: var(--tooltip-border-radius);
  padding: var(--spacing-xs, 0.25rem) var(--spacing-sm, 0.5rem);
  font-size: var(--font-size-xs, 0.75rem);
}

/* ===== UNIFIED ALERT STYLES ===== */
.alert {
  border-radius: var(--radius-card, 0.75rem);
  border: var(--border-width-base) solid transparent;
  padding: var(--spacing-md, 1rem);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm, 0.5rem);
}

/* ===== UNIFIED NAVIGATION STYLES ===== */
.nav-link {
  transition: var(--transition-fast);
  border-radius: var(--radius-sm, 0.25rem);
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
}

.nav-link:hover {
  background-color: var(--bg-secondary, #f8fafc);
}

.nav-link.active {
  background-color: var(--brand-primary, #6366f1);
  color: white;
}

.nav-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ===== UNIFIED TAB STYLES ===== */
.nav-tabs .nav-link {
  border-radius: var(--radius-sm, 0.25rem) var(--radius-sm, 0.25rem) 0 0;
  border: var(--border-width-base) solid transparent;
  margin-bottom: -1px;
}

.nav-tabs .nav-link.active {
  border-color: var(--border-color-medium);
  border-bottom-color: transparent;
  background-color: var(--bg-primary, #ffffff);
}

/* ===== UNIFIED PAGINATION STYLES ===== */
.page-link {
  border-radius: var(--radius-sm, 0.25rem);
  border: var(--border-width-base) solid var(--border-color-medium);
  transition: var(--transition-fast);
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
}

.page-link:hover {
  background-color: var(--bg-secondary, #f8fafc);
  border-color: var(--brand-primary, #6366f1);
}

.page-link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.page-item.active .page-link {
  background-color: var(--brand-primary, #6366f1);
  border-color: var(--brand-primary, #6366f1);
  color: white;
}

/* ===== UNIFIED BREADCRUMB STYLES ===== */
.breadcrumb {
  border-radius: var(--radius-sm, 0.25rem);
  padding: var(--spacing-sm, 0.5rem) var(--spacing-md, 1rem);
  background-color: var(--bg-secondary, #f8fafc);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--text-secondary, #64748b);
  margin: 0 var(--spacing-xs, 0.25rem);
}

/* ===== UNIFIED PROGRESS BAR STYLES ===== */
.progress {
  border-radius: var(--radius-full, 9999px);
  height: var(--spacing-sm, 0.5rem);
  background-color: var(--bg-secondary, #f8fafc);
  overflow: hidden;
}

.progress-bar {
  transition: width var(--transition-slow);
  border-radius: var(--radius-full, 9999px);
}

/* ===== UNIFIED SPINNER/LOADER STYLES ===== */
.spinner-border,
.spinner-grow {
  width: var(--spacing-lg, 1.5rem);
  height: var(--spacing-lg, 1.5rem);
  border-width: var(--border-width-base);
}

/* ===== UNIFIED TOAST STYLES ===== */
.toast {
  border-radius: var(--radius-card, 0.75rem);
  border: var(--border-width-thin) solid var(--border-color-light);
  box-shadow: var(--shadow-lg);
}

/* ===== UNIFIED ACCORDION STYLES ===== */
.accordion-item {
  border-radius: var(--radius-card, 0.75rem);
  border: var(--border-width-base) solid var(--border-color-medium);
  margin-bottom: var(--spacing-sm, 0.5rem);
  overflow: hidden;
}

.accordion-button {
  border-radius: var(--radius-card, 0.75rem);
  transition: var(--transition-base);
}

.accordion-button:not(.collapsed) {
  border-radius: var(--radius-card, 0.75rem) var(--radius-card, 0.75rem) 0 0;
}

.accordion-button:focus {
  box-shadow: var(--focus-ring);
  border-color: var(--brand-primary, #6366f1);
}

/* ===== UNIFIED LIST GROUP STYLES ===== */
.list-group-item {
  border-radius: var(--radius-sm, 0.25rem);
  border: var(--border-width-base) solid var(--border-color-medium);
  transition: var(--transition-fast);
  padding: var(--spacing-md, 1rem);
}

.list-group-item:hover {
  background-color: var(--bg-secondary, #f8fafc);
  border-color: var(--brand-primary, #6366f1);
}

.list-group-item.active {
  background-color: var(--brand-primary, #6366f1);
  border-color: var(--brand-primary, #6366f1);
  color: white;
}

/* ===== UNIFIED TABLE STYLES ===== */
.table {
  border-radius: var(--radius-card, 0.75rem);
  overflow: hidden;
}

.table thead th {
  border-bottom: var(--border-width-base) solid var(--border-color-medium);
  font-weight: var(--font-weight-semibold, 600);
  text-transform: uppercase;
  font-size: var(--font-size-xs, 0.75rem);
  letter-spacing: var(--letter-spacing-wide, 0.05em);
}

.table tbody tr {
  transition: var(--transition-fast);
}

.table tbody tr:hover {
  background-color: var(--bg-secondary, #f8fafc);
}

/* ===== UNIFIED IMAGE STYLES ===== */
img {
  border-radius: var(--radius-sm, 0.25rem);
  transition: var(--transition-base);
}

img:hover {
  opacity: var(--opacity-hover);
}

/* ===== UNIFIED CODE BLOCK STYLES ===== */
code,
pre {
  border-radius: var(--radius-sm, 0.25rem);
  padding: var(--spacing-xs, 0.25rem) var(--spacing-sm, 0.5rem);
  background-color: var(--bg-secondary, #f8fafc);
  border: var(--border-width-thin) solid var(--border-color-light);
}

pre {
  padding: var(--spacing-md, 1rem);
  overflow-x: auto;
}

/* ===== UNIFIED BLOCKQUOTE STYLES ===== */
blockquote {
  border-left: var(--border-width-thick) solid var(--brand-primary, #6366f1);
  padding-left: var(--spacing-md, 1rem);
  margin: var(--spacing-lg, 1.5rem) 0;
  font-style: italic;
  color: var(--text-secondary, #64748b);
}

/* ===== ACCESSIBILITY: REDUCED MOTION ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  * {
    box-shadow: none !important;
    text-shadow: none !important;
  }
  
  .btn,
  .nav,
  .navbar,
  .footer,
  .sidebar {
    display: none !important;
  }
}