/* =============================================================================
   ARCTIC PARADE — UNIFIED DESIGN SYSTEM
   
   A single source of truth for all UI styling across public, platform, and staff
   interfaces. This system prioritizes:
   
   • Minimalism & clarity
   • Mobile-first responsive design
   • Consistent spacing & hierarchy
   • Premium feel through intentional whitespace
   • Accessibility (contrast, focus states, keyboard nav)
   
   ============================================================================= */

/* =============================================================================
   ROOT VARIABLES
   ============================================================================= */

:root {
  /* ========================================================================
     TEXT COLORS — WCAG AA Compliant
     ======================================================================== */
  
  --color-text-primary: #1a1a1a;      /* Darker for better contrast (4.5:1+) */
  --color-text-secondary: #6b7280;    /* Medium gray for secondary text */
  --color-text-tertiary: #9ca3af;     /* Tertiary text and placeholders */
  --color-text-muted: #9ca3af;        /* Lighter gray for tertiary text */
  --color-text-inverse: #ffffff;      /* Text on dark backgrounds */
  
  /* ========================================================================
     BORDER & BACKGROUND COLORS
     ======================================================================== */
  
  --color-border: #e5e7eb;            /* Softer borders */
  --color-border-light: #f3f4f6;      /* Very light borders */
  --color-border-strong: #d1d5db;     /* Stronger borders */
  
  --color-bg-primary: #ffffff;        /* Pure white primary */
  --color-bg-secondary: #f9fafb;      /* Subtle off-white */
  --color-bg-tertiary: #f3f4f6;       /* Slightly darker background */
  --color-bg-lighter: #f8fafc;        /* Hover/fill surface background */
  --color-bg-white: #ffffff;          /* Alias for primary */
  --color-bg-soft: #f9fafb;           /* Soft background layer */
  
  /* ========================================================================
     BRAND & PRIMARY COLORS — Modern Blue
     ======================================================================== */
  
  --color-primary: #0066cc;           /* Modern brand blue */
  --color-primary-light: #e6f0ff;     /* Light blue for hover/bg */
  --color-primary-dark: #003d99;      /* Dark blue for emphasis */
  --color-primary-text: #ffffff;      /* Text on primary background */
  
  --color-brand: #0066cc;             /* Alias for primary */
  --color-brand-light: rgba(0, 102, 204, 0.08);
  
  /* ========================================================================
     SEMANTIC COLORS
     ======================================================================== */
  
  /* Success — Green */
  --color-success: #10b981;
  --color-success-light: #d1fae5;
  --color-success-dark: #047857;
  
  /* Warning — Amber */
  --color-warning: #f59e0b;
  --color-warning-light: #fef3c7;
  --color-warning-dark: #d97706;
  
  /* Danger — Red */
  --color-danger: #ff4757;            /* Brighter red */
  --color-danger-light: #ffe5e5;
  --color-danger-dark: #c1121f;
  
  /* Info — Cyan */
  --color-info: #00b4d8;
  --color-info-light: #cff0f9;
  --color-info-dark: #0096c7;
  
  /* Secondary — Purple */
  --color-secondary: #6c5ce7;
  --color-secondary-light: #e8e4f7;
  --color-secondary-dark: #5134a8;
  
  /* ========================================================================
     TYPOGRAPHY — Enhanced System
     ======================================================================== */
  
  /* Font families with better fallbacks */
  --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;
  
  /* Font Sizes — Better scale */
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;             /* Default body text */
  --font-size-md: 15px;               /* Slightly larger body */
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 32px;
  --font-size-5xl: 40px;              /* New: Large hero text */
  
  /* Line Heights */
  --line-height-tight: 1.2;           /* Headings */
  --line-height-normal: 1.5;          /* Body text default */
  --line-height-relaxed: 1.75;        /* Long-form reading */
  
  /* Font Weights */
  --font-weight-regular: 400;
  --font-weight-normal: 400;
  --font-weight-light: 300;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* ========================================================================
     SPACING SCALE — 8px Base Unit (Refined)
     ======================================================================== */
  
  --space-0: 0;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;                   /* Standard spacing */
  --space-xl: 24px;                   /* Increased from 20px */
  --space-2xl: 32px;
  --space-3xl: 48px;
  --space-4xl: 64px;
  --space-5xl: 80px;                  /* New: Large spacing */
  --space-6xl: 96px;                  /* New: Extra large spacing */
  
  /* Gap for flex/grid (slightly tighter than margins) */
  --gap-xs: 4px;
  --gap-sm: 8px;
  --gap-md: 12px;
  --gap-lg: 16px;
  --gap-xl: 20px;
  --gap-2xl: 24px;
  
  /* ========================================================================
     BORDER RADIUS — Modern Rounded Corners
     ======================================================================== */
  
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;
  
  /* ========================================================================
     SHADOWS — Elevation System
     ======================================================================== */
  
  /* Subtle shadows for depth without heaviness */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px 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);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
  
  /* Softer alternative for cards */
  --shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.06);
  
  /* ========================================================================
     TRANSITIONS & ANIMATIONS
     ======================================================================== */
  
  /* Duration scale */
  --transition-fast: 150ms;
  --transition-base: 200ms;
  --transition-slow: 300ms;
  
  /* 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-linear: linear;
  
  /* Combined timing functions */
  --transition-all: all var(--transition-base) var(--ease-in-out);
  --transition-colors: color var(--transition-base) var(--ease-in-out), background-color var(--transition-base) var(--ease-in-out), border-color var(--transition-base) var(--ease-in-out);
  --transition-transform: transform var(--transition-base) var(--ease-in-out);
  --transition-opacity: opacity var(--transition-base) var(--ease-in-out);
  
  /* ========================================================================
     LAYOUT & STRUCTURE
     ======================================================================== */
  
  --content-width: 1100px;
  --content-width-narrow: 900px;
  --content-width-wide: 1400px;
  
  /* ========================================================================
     Z-INDEX SCALE — Stacking Context
     ======================================================================== */
  
  --z-dropdown: 100;
  --z-sticky: 20;
  --z-topbar: 40;
  --z-modal: 1000;
  --z-modal-backdrop: 999;
  --z-tooltip: 1100;
  
  /* ========================================================================
     RESPONSIVE BREAKPOINTS
     ======================================================================== */
  
  /* Mobile First Approach */
  /* 0-639px:   Mobile */
  /* 640-1023px: Tablet */
  /* 1024+px:    Desktop */
  
  /* Breakpoint aliases for media queries */
  --breakpoint-sm: 640px;
  --breakpoint-md: 1024px;
  --breakpoint-lg: 1440px;
}

/* =============================================================================
   GLOBAL STYLES
   ============================================================================= */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-stack);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Ensure images and media scale properly */
img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Links inherit color by default */
a {
  color: inherit;
  text-decoration: none;
}

a:visited {
  color: inherit;
}

/* =============================================================================
   TYPOGRAPHY
   ============================================================================= */

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

h4 {
  font-size: var(--font-size-lg);
}

p {
  margin: 0;
}

/* Utility text classes */
.text-primary {
  color: var(--color-text-primary);
}

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

.text-muted {
  color: var(--color-text-muted);
}

.text-inverse {
  color: var(--color-text-inverse);
}

.text-success {
  color: var(--color-success);
}

.text-warning {
  color: var(--color-warning);
}

.text-danger {
  color: var(--color-danger);
}

.text-info {
  color: var(--color-info);
}

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

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

/* ========================================================================
   BACKGROUND COLORS
   ======================================================================== */

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

.bg-primary-light {
  background-color: var(--color-primary-light);
}

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

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

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

.bg-info {
  background-color: var(--color-info);
}

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

.bg-tertiary {
  background-color: var(--color-bg-tertiary);
}

/* ========================================================================
   INTERACTIVE STATE UTILITIES
   ======================================================================== */

/* Focus visible — Better keyboard navigation indicator */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Disable focus outline for mouse users (optional) */
*:focus:not(:focus-visible) {
  outline: none;
}

.focus-ring {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Hover & active state helpers */
.interactive {
  cursor: pointer;
  transition: var(--transition-colors);
}

.interactive:hover {
  background-color: var(--color-bg-secondary);
}

.interactive:active {
  background-color: var(--color-bg-tertiary);
}

/* Touch-friendly target size — min 44px */
.touch-target {
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========================================================================
   SHADOWS & DEPTH
   ======================================================================== */

.shadow-sm {
  box-shadow: var(--shadow-sm);
}

.shadow-base {
  box-shadow: var(--shadow-base);
}

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

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

/* Hover elevation */
.shadow-hover {
  transition: box-shadow var(--transition-base) var(--ease-in-out);
}

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

/* ========================================================================
   ANIMATION UTILITIES
   ======================================================================== */

.animate-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  will-change: opacity;
}

.animate-spin {
  animation: spin 1s linear infinite;
  will-change: transform;
}

.animate-fade-in {
  animation: fadeIn 0.3s ease-out;
  will-change: opacity;
}

.animate-slide-up {
  animation: slideUp 0.3s ease-out;
  will-change: transform, opacity;
}

/* Loading spinner — inline element with primary colour ring */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
  will-change: transform;
}

.spinner-sm {
  width: 14px;
  height: 14px;
  border-width: 2px;
}

.spinner-lg {
  width: 32px;
  height: 32px;
  border-width: 3px;
}

/* Button loading state */
.btn.is-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.is-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.4);
  border-top-color: white;
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
  will-change: transform;
}

.btn-secondary.is-loading::after,
.btn-ghost.is-loading::after,
.btn-outline.is-loading::after {
  border-color: rgba(0, 0, 0, 0.15);
  border-top-color: var(--color-primary);
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(8px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Disable animations for users who prefer 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;
  }
}

/* ========================================================================
   TEXT UTILITIES
   ======================================================================== */

.text-xs {
  font-size: var(--font-size-xs);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-base {
  font-size: var(--font-size-base);
}

.text-lg {
  font-size: var(--font-size-lg);
}

.text-xl {
  font-size: var(--font-size-xl);
}

.text-2xl {
  font-size: var(--font-size-2xl);
}

.text-3xl {
  font-size: var(--font-size-3xl);
}

.text-4xl {
  font-size: var(--font-size-4xl);
}

.text-5xl {
  font-size: var(--font-size-5xl);
}

.text-light {
  font-weight: var(--font-weight-light);
}

.text-normal {
  font-weight: var(--font-weight-normal);
}

.text-medium {
  font-weight: var(--font-weight-medium);
}

.text-bold {
  font-weight: var(--font-weight-bold);
}

.text-center {
  text-align: center;
}

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

.text-right {
  text-align: right;
}

.text-uppercase {
  text-transform: uppercase;
}

.text-lowercase {
  text-transform: lowercase;
}

.text-capitalize {
  text-transform: capitalize;
}

.text-nowrap {
  white-space: nowrap;
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.text-line-height-tight {
  line-height: var(--line-height-tight);
}

.text-line-height-normal {
  line-height: var(--line-height-normal);
}

.text-line-height-relaxed {
  line-height: var(--line-height-relaxed);
}

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

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

.text-tertiary {
  color: var(--color-text-tertiary);
}

.text-muted {
  color: var(--color-text-muted);
}

/* =============================================================================
   LAYOUT UTILITIES
   ============================================================================= */

.container {
  max-width: var(--content-width);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--space-lg);
}

.container-narrow {
  max-width: var(--content-width-narrow);
  margin: 0 auto;
  width: 100%;
  padding: 0 var(--space-lg);
}

/* Screen-reader only (visually hidden) */
.sr-only {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

/* Text decoration */
.text-strikethrough {
  text-decoration: line-through;
}

/* Hub card — linked card with title/sub/cta, used on overview pages */
.hub-card {
  display: block;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  background: var(--color-bg-white);
  text-decoration: none;
  color: var(--color-text-primary);
  transition: border-color var(--transition-base) var(--ease-out),
              box-shadow var(--transition-base) var(--ease-out),
              transform var(--transition-base) var(--ease-out);
  will-change: transform;
}

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

.hub-card:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.hub-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.hub-title {
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-base);
}

.hub-sub {
  margin-top: var(--space-xs);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.hub-cta {
  margin-top: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  opacity: 0.6;
}

/* Card image — full-width cover image in card */
.card-img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-md);
  display: block;
}

/* Spacing utilities */
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }

/* Text utilities */
.text-prewrap { white-space: pre-wrap; }

/* Form utilities */
.form-inline { margin: 0; }

/* Action row — flex row for button groups */
.action-row {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  align-items: center;
}

/* Color swatch — inline block for primary color preview */
.color-swatch {
  display: inline-block;
  width: 22px;
  height: 22px;
  border-radius: 8px;
  border: 1px solid var(--color-border-light);
  background: #111;
  flex-shrink: 0;
}

/* Flexbox utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-gap-sm {
  gap: var(--space-sm);
}

.flex-gap-md {
  gap: var(--space-md);
}

.flex-gap-lg {
  gap: var(--space-lg);
}

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-lg);
}

.stack {
  display: grid;
  gap: var(--space-lg);
}

.stack-sm {
  display: grid;
  gap: var(--space-md);
}

.stack-xs {
  display: grid;
  gap: var(--space-sm);
}

/* Responsive grid */
@media (max-width: 1023px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Spacing utilities */
.mt { margin-top: var(--space-lg); }
.mb { margin-bottom: var(--space-lg); }
.mv { margin-top: var(--space-lg); margin-bottom: var(--space-lg); }
.mh { margin-left: var(--space-lg); margin-right: var(--space-lg); }

.p { padding: var(--space-lg); }
.pt { padding-top: var(--space-lg); }
.pb { padding-bottom: var(--space-lg); }
.pv { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.ph { padding-left: var(--space-lg); padding-right: var(--space-lg); }

/* =============================================================================
   BUTTONS & INTERACTIONS
   ============================================================================= */

button, .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: white;
  font-family: var(--font-stack);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  user-select: none;
  transition: var(--transition-all);
  white-space: nowrap;
  text-decoration: none;
  min-height: 44px;
  min-width: 44px;
  will-change: transform;
}

button:hover, .btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

button:focus-visible, .btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:active, .btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

button:disabled, .btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* ========================================================================
   BUTTON SIZE VARIANTS
   ======================================================================== */

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
  min-height: 36px;
}

.btn-md {
  padding: var(--space-md) var(--space-lg);
  font-size: var(--font-size-sm);
  min-height: 44px;
}

.btn-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--font-size-base);
  min-height: 52px;
}

/* ========================================================================
   BUTTON STYLE VARIANTS
   ======================================================================== */

/* Primary Button — bold, default action */
.btn-primary, button.primary {
  background-color: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.btn-primary:hover, button.primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

/* Secondary Button — less prominent action */
.btn-secondary, button.secondary {
  background-color: var(--color-bg-soft);
  color: var(--color-text-primary);
  border-color: var(--color-border-light);
}

.btn-secondary:hover, button.secondary:hover {
  background-color: var(--color-bg-lighter);
  border-color: var(--color-border);
}

/* Ghost Button — minimal, inline action */
.btn-ghost, button.ghost {
  background-color: transparent;
  color: var(--color-primary);
  border-color: transparent;
}

.btn-ghost:hover, button.ghost:hover {
  background-color: var(--color-primary-light);
  border-color: transparent;
}

/* Outline Button — bordered, secondary emphasis */
.btn-outline, button.outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border);
}

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

/* Danger Button — destructive action */
.btn-danger, button.danger {
  background-color: var(--color-danger);
  color: white;
  border-color: var(--color-danger);
}

.btn-danger:hover, button.danger:hover {
  background-color: #e63946;
  border-color: #e63946;
  box-shadow: var(--shadow-md);
}

/* Success Button — positive action */
.btn-success, button.success {
  background-color: var(--color-success);
  color: white;
  border-color: var(--color-success);
}

.btn-success:hover, button.success:hover {
  background-color: #2ecc71;
  border-color: #2ecc71;
  box-shadow: var(--shadow-md);
}

/* Block Button — full width */
.btn-block, button.block {
  width: 100%;
}

/* Icon Button — square, centered icon */
.btn-icon, button.icon {
  padding: var(--space-md);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
}

.btn-icon.btn-lg, button.icon.btn-lg {
  width: 52px;
  height: 52px;
  padding: var(--space-lg);
}

.btn-icon.btn-sm, button.icon.btn-sm {
  width: 36px;
  height: 36px;
  padding: var(--space-xs);
}

.btn-ghost {
  background-color: transparent;
  border-color: transparent;
  padding: var(--space-md) 0;
}

.btn-ghost:hover {
  background-color: transparent;
  color: var(--color-text-secondary);
}

.btn-sm {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-lg) var(--space-xl);
  font-size: var(--font-size-base);
}

/* Status buttons */
.btn-success {
  background-color: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.btn-success:hover {
  filter: brightness(0.9);
}

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

.btn-danger:hover {
  filter: brightness(0.9);
}

.btn-danger-ghost {
  background-color: transparent;
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.btn-danger-ghost:hover {
  background-color: rgba(239, 68, 68, 0.06);
}

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

.btn-warning:hover {
  filter: brightness(0.9);
}

/* Ensure actual buttons normalise properly */
button {
  appearance: none;
  -webkit-appearance: none;
  font: inherit;
}

/* =============================================================================
   FORMS
   ============================================================================= */

.form-group {
  display: grid;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.form-group.required label::after {
  content: ' *';
  color: var(--color-danger);
}

/* Text inputs, email, tel, etc. */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
input[type="url"],
select,
textarea {
  display: block;
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-white);
  color: var(--color-text-primary);
  font-family: var(--font-stack);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  transition: var(--transition-colors);
  min-height: 44px;
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="tel"]::placeholder,
input[type="number"]::placeholder,
input[type="password"]::placeholder,
input[type="search"]::placeholder,
input[type="date"]::placeholder,
input[type="datetime-local"]::placeholder,
input[type="time"]::placeholder,
input[type="url"]::placeholder,
textarea::placeholder {
  color: var(--color-text-tertiary);
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

textarea {
  resize: vertical;
  min-height: 120px;
  padding: var(--space-md);
  line-height: var(--line-height-normal);
}

input:disabled,
select:disabled,
textarea:disabled {
  background-color: var(--color-bg-soft);
  color: var(--color-text-tertiary);
  opacity: 0.7;
  cursor: not-allowed;
}

/* Custom select styling */
select {
  appearance: none;
  padding-right: var(--space-3xl);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%230066cc'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  background-size: 20px;
  cursor: pointer;
}

select:disabled {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%23999999'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
}

/* Checkboxes and radios */
input[type="checkbox"],
input[type="radio"] {
  width: 20px;
  height: 20px;
  margin-right: var(--space-sm);
  cursor: pointer;
  accent-color: var(--color-primary);
}

input[type="checkbox"]:disabled,
input[type="radio"]:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

/* Help text */
.form-help {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-xs);
}

/* Form error states */
.form-error {
  display: block;
  color: var(--color-danger);
  font-size: var(--font-size-xs);
  margin-top: var(--space-xs);
  font-weight: var(--font-weight-medium);
}

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: var(--color-danger);
  background-color: rgba(255, 71, 87, 0.02);
}

.form-group.has-error input:focus-visible,
.form-group.has-error select:focus-visible,
.form-group.has-error textarea:focus-visible {
  outline-color: var(--color-danger);
  border-color: var(--color-danger);
}

/* Success states */
.form-group.has-success input,
.form-group.has-success select,
.form-group.has-success textarea {
  border-color: var(--color-success);
  background-color: rgba(46, 204, 113, 0.02);
}

.form-group.has-success input:focus-visible,
.form-group.has-success select:focus-visible,
.form-group.has-success textarea:focus-visible {
  outline-color: var(--color-success);
}

/* Warning states */
.form-group.has-warning input,
.form-group.has-warning select,
.form-group.has-warning textarea {
  border-color: var(--color-warning);
  background-color: rgba(255, 193, 7, 0.02);
}

.form-group.has-warning input:focus-visible,
.form-group.has-warning select:focus-visible,
.form-group.has-warning textarea:focus-visible {
  outline-color: var(--color-warning);
}

/* Form layout utilities */
.form-row {
  display: grid;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.form-row-2 {
  grid-template-columns: repeat(2, 1fr);
}

.form-row-3 {
  grid-template-columns: repeat(3, 1fr);
}

/* Mobile: single column */
@media (max-width: var(--breakpoint-md)) {
  .form-row-2,
  .form-row-3 {
    grid-template-columns: 1fr;
  }
}

/* =============================================================================
   CARDS & PANELS
   ============================================================================= */

.card {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
}

.card:hover {
  box-shadow: var(--shadow-light);
  transition: box-shadow var(--transition-base);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.card-body {
  display: grid;
  gap: var(--space-lg);
}

.card-footer {
  display: flex;
  gap: var(--space-lg);
  justify-content: space-between;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

/* Compact card variant */
.card-sm {
  padding: var(--space-md);
}

.card-sm .card-header {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
}

/* Interactive card — linked/clickable card with hover lift */
.card-interactive {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: transform var(--transition-base) var(--ease-out),
              box-shadow var(--transition-base) var(--ease-out),
              border-color var(--transition-base) var(--ease-out);
  will-change: transform;
}

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

.card-interactive:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

.card-interactive:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Contained card — filled surface, for highlighted/featured content */
.card-contained {
  background-color: var(--color-primary-light);
  border-color: transparent;
}

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

/* Elevated card — stronger shadow, no border */
.card-elevated {
  border-color: transparent;
  box-shadow: var(--shadow-md);
}

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

/* Flush card — no padding, for image-first cards */
.card-flush {
  padding: 0;
  overflow: hidden;
}

.card-flush .card-header,
.card-flush .card-body,
.card-flush .card-footer {
  padding: var(--space-lg);
}

.card-flush .card-header {
  padding-bottom: var(--space-md);
  margin-bottom: 0;
}

/* =============================================================================
   BADGES & STATUS INDICATORS
   ============================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg-soft);
  color: var(--color-text-primary);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.1);
  border-color: var(--color-success);
  color: var(--color-success);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-color: var(--color-warning);
  color: var(--color-warning);
}

.badge-danger {
  background-color: rgba(239, 68, 68, 0.1);
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.badge-info {
  background-color: rgba(59, 130, 246, 0.1);
  border-color: var(--color-info);
  color: var(--color-info);
}

/* Status dot indicator */
.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--color-text-secondary);
}

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

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

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

/* =============================================================================
   NAVIGATION & MENUS
   ============================================================================= */

/* Topbar shell used in base templates */
.topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  background-color: var(--color-bg-white);
  border-bottom: 1px solid var(--color-border-light);
}

.topbar-inner {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.topbar-brand {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.topbar-brand:hover {
  color: var(--color-primary);
}

.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-menu-item {
  list-style: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: var(--transition-colors);
}

.nav-link:hover,
.nav-link:focus-visible {
  background-color: var(--color-bg-soft);
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-white);
  color: var(--color-text-primary);
  padding: var(--space-xs);
  cursor: pointer;
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: var(--radius-full);
  background-color: currentColor;
}

.nav {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
}

.nav-item {
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: background-color var(--transition-fast);
}

.nav-item:hover {
  background-color: var(--color-bg-soft);
}

.nav-item.active {
  background-color: var(--color-brand);
  color: var(--color-text-inverse);
}

/* Breadcrumbs */
.breadcrumbs {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.breadcrumbs a {
  color: var(--color-text-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}

.breadcrumbs a:hover {
  border-bottom-color: var(--color-border);
}

.breadcrumb-sep {
  color: var(--color-border);
}

/* Dropdowns */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: var(--space-sm);
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-base);
  z-index: var(--z-dropdown);
  min-width: 200px;
}

.dropdown:focus-within .dropdown-menu {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.dropdown-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: -2px;
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: var(--space-md);
  text-align: left;
  color: var(--color-text-primary);
  text-decoration: none;
  border: none;
  background: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

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

.dropdown-divider {
  height: 1px;
  background-color: var(--color-border-light);
  margin: var(--space-xs) 0;
}

/* =============================================================================
   TABLES
   ============================================================================= */

table {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

/* Table header styling */
thead {
  background-color: var(--color-primary-light);
  border-bottom: 2px solid var(--color-primary);
}

th {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Table body styling */
td {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

tbody tr {
  transition: background-color var(--transition-fast);
}

tbody tr:hover {
  background-color: var(--color-bg-soft);
}

.table-row.is-active td,
tbody tr[aria-current="true"] td {
  box-shadow: inset 3px 0 0 var(--color-primary);
  background-color: var(--color-primary-light);
}

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

/* Striped table rows (optional variant) */
.table-striped tbody tr:nth-child(odd) {
  background-color: var(--color-bg-soft);
}

.table-striped tbody tr:nth-child(odd):hover {
  background-color: var(--color-bg-lighter);
}

/* Compact table variant */
.table-compact th,
.table-compact td {
  padding: var(--space-sm) var(--space-md);
}

.table-compact {
  font-size: var(--font-size-xs);
}

/* Responsive table wrapper for mobile */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: var(--breakpoint-md)) {
  table {
    font-size: var(--font-size-xs);
  }

  th, td {
    padding: var(--space-sm);
  }
}

/* =============================================================================
   ALERTS & MESSAGES
   ============================================================================= */

.alert {
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-info);
  background-color: rgba(0, 102, 204, 0.05);
  color: var(--color-text-primary);
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.alert-icon {
  flex-shrink: 0;
  font-weight: bold;
  margin-top: 2px;
}

.alert-success {
  border-left-color: var(--color-success);
  background-color: rgba(46, 204, 113, 0.05);
}

.alert-success .alert-icon {
  color: var(--color-success);
}

.alert-warning {
  border-left-color: var(--color-warning);
  background-color: rgba(255, 193, 7, 0.05);
}

.alert-warning .alert-icon {
  color: var(--color-warning);
}

.alert-danger {
  border-left-color: var(--color-danger);
  background-color: rgba(255, 71, 87, 0.05);
}

.alert-danger .alert-icon {
  color: var(--color-danger);
}

.alert-info {
  border-left-color: var(--color-info);
  background-color: rgba(0, 102, 204, 0.05);
}

.alert-info .alert-icon {
  color: var(--color-info);
}

.alert-title {
  font-weight: var(--font-weight-semibold);
  display: block;
  margin-bottom: var(--space-xs);
}

.alert-content {
  font-size: var(--font-size-sm);
}

/* =============================================================================
   MODALS & OVERLAYS
   ============================================================================= */

/* Backdrop */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.5);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
  animation: fadeIn var(--transition-base) var(--ease-out);
  will-change: opacity;
}

/* Modal dialog */
.modal {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 560px;
  max-height: 90vh;
  overflow-y: auto;
  z-index: var(--z-modal);
  animation: slideUp var(--transition-base) var(--ease-out);
  will-change: transform, opacity;
}

.modal-sm { max-width: 400px; }
.modal-lg { max-width: 720px; }
.modal-xl { max-width: 960px; }

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-xl);
  border-bottom: 1px solid var(--color-border-light);
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.modal-close {
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  min-height: 36px;
  min-width: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-bg-soft);
  color: var(--color-text-primary);
}

.modal-body {
  padding: var(--space-xl);
}

.modal-footer {
  display: flex;
  gap: var(--space-md);
  justify-content: flex-end;
  padding: var(--space-lg) var(--space-xl);
  border-top: 1px solid var(--color-border-light);
  flex-wrap: wrap;
}

/* Mobile: full-height modal on small screens */
@media (max-width: 639px) {
  .modal-backdrop {
    align-items: flex-end;
    padding: 0;
  }

  .modal {
    max-width: 100%;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    max-height: 95vh;
    animation: slideUp var(--transition-slow) var(--ease-out);
  }
}

/* =============================================================================
   TOOLTIPS
   ============================================================================= */

/* Tooltip wrapper — add data-tooltip="text" to trigger */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-text-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-family: var(--font-stack);
  white-space: nowrap;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after,
[data-tooltip]:focus-visible::after {
  opacity: 1;
}

/* =============================================================================
   LEGACY ALIASES — Panel → Card
   
   Templates use the old .panel class hierarchy. These aliases map the old
   names to the new card-based design so no template changes are needed.
   ============================================================================= */

.panel {
  background-color: var(--color-bg-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
}

.panel:hover {
  box-shadow: var(--shadow-light);
  transition: box-shadow var(--transition-base);
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border-light);
}

.panel-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.panel-sub {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
}

.panel-body {
  display: grid;
  gap: var(--space-lg);
}

.panel-footer {
  display: flex;
  gap: var(--space-lg);
  justify-content: space-between;
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border-light);
}

/* =============================================================================
   LEGACY ALIASES — Form classes
   
   Templates use .form-label, .form-input, .form-select, .form-textarea
   from the roadmap proposal. Map these to the equivalent base styles.
   ============================================================================= */

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.form-input {
  display: block;
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-white);
  color: var(--color-text-primary);
  font-family: var(--font-stack);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  transition: var(--transition-colors);
  min-height: 44px;
}

.form-input:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.form-input::placeholder {
  color: var(--color-text-tertiary);
}

.form-input:disabled {
  background-color: var(--color-bg-soft);
  color: var(--color-text-tertiary);
  opacity: 0.7;
  cursor: not-allowed;
}

.form-textarea {
  display: block;
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-white);
  color: var(--color-text-primary);
  font-family: var(--font-stack);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  transition: var(--transition-colors);
  resize: vertical;
  min-height: 120px;
}

.form-textarea:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.form-select {
  display: block;
  width: 100%;
  padding: var(--space-md);
  padding-right: var(--space-3xl);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-white);
  color: var(--color-text-primary);
  font-family: var(--font-stack);
  font-size: var(--font-size-base);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%230066cc'%3E%3Cpath fill-rule='evenodd' d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z' clip-rule='evenodd'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  background-size: 20px;
  cursor: pointer;
  min-height: 44px;
  transition: var(--transition-colors);
}

.form-select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.form-select:disabled {
  background-color: var(--color-bg-soft);
  color: var(--color-text-tertiary);
  opacity: 0.7;
  cursor: not-allowed;
}

/* Form required indicator */
.form-required {
  color: var(--color-danger);
  margin-left: var(--space-xs);
}

/* Form hint text */
.form-hint {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-xs);
}

/* =============================================================================
   UTILITIES
   ============================================================================= */

/* Font family utilities */
.font-sans {
  font-family: var(--font-stack);
}

.font-mono {
  font-family: var(--font-mono);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.skip-link {
  position: absolute;
  left: var(--space-md);
  top: -100px;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: var(--color-primary-text);
  z-index: var(--z-tooltip);
  transition: top var(--transition-fast) var(--ease-out);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: var(--space-md);
  outline: 2px solid var(--color-text-inverse);
  outline-offset: 2px;
}

.focus-ring {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.status-live {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.hidden {
  display: none !important;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =============================================================================
   FOCUS & KEYBOARD NAVIGATION
   ============================================================================= */

*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

*:focus:not(:focus-visible) {
  outline: none;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible,
[role="menuitem"]:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

input[aria-invalid="true"],
select[aria-invalid="true"],
textarea[aria-invalid="true"] {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(255, 71, 87, 0.14);
}

[aria-busy="true"] {
  cursor: progress;
}

/* =============================================================================
   PRINT STYLES
   ============================================================================= */

@media print {
  body {
    background-color: white;
    color: black;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .no-print {
    display: none !important;
  }

  button, .btn {
    border: 1px solid black;
  }
}

/* =============================================================================
   MOBILE-FIRST RESPONSIVE DESIGN
   
   Mobile-first approach: Start with mobile styles, enhance at larger breakpoints
   - Mobile (< 640px): Single column, stacked layouts
   - Tablet (640px-1023px): 2-column grids, optimized touch targets
   - Desktop (1024px+): 3-column grids, expanded layouts
   ============================================================================= */

/* ========================================================================
   MOBILE OPTIMIZATIONS (< 640px)
   ======================================================================== */

@media (max-width: 639px) {
  .topbar-inner {
    min-height: 60px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    right: 0;
    bottom: 0;
    width: min(320px, 90vw);
    background-color: var(--color-bg-white);
    border-left: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
    transform: translateX(100%);
    transition: transform var(--transition-base) var(--ease-out);
    z-index: var(--z-dropdown);
  }

  .nav-menu.is-open {
    transform: translateX(0);
  }

  .nav-link {
    min-height: 48px;
    width: 100%;
  }

  body.nav-open {
    overflow: hidden;
  }

  /* Increase touch target sizes on mobile */
  button, .btn, a.btn, input[type="button"], input[type="submit"] {
    min-height: 48px;
    padding: var(--space-md) var(--space-lg);
  }

  /* Full-width buttons on mobile */
  .btn-block {
    width: 100%;
  }

  /* Single column layout for form rows */
  .form-row,
  .form-row-2,
  .form-row-3 {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Stack cards vertically */
  .grid, .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }

  .stack {
    gap: var(--space-md);
  }

  /* Hide secondary columns on mobile */
  .hide-mobile {
    display: none !important;
  }

  /* Reduce padding on mobile */
  .card {
    padding: var(--space-md);
  }

  .card-sm {
    padding: var(--space-sm);
  }

  /* Mobile-friendly tables */
  .table-wrapper {
    overflow-x: auto;
  }

  table {
    width: 100%;
    font-size: var(--font-size-xs);
  }

  th, td {
    padding: var(--space-sm);
  }

  /* Reduce heading sizes on mobile */
  h1 {
    font-size: var(--font-size-3xl);
  }

  h2 {
    font-size: var(--font-size-2xl);
  }

  h3 {
    font-size: var(--font-size-xl);
  }

  /* Reduce spacing on mobile */
  .mt, .mv {
    margin-top: var(--space-md);
  }

  .mb, .mv {
    margin-bottom: var(--space-md);
  }

  .p {
    padding: var(--space-md);
  }

  .pv {
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
  }

  .ph {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  /* Mobile-friendly action rows */
  .action-row {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .action-row > * {
    width: 100%;
  }

  /* Responsive flex utilities */
  .flex-between {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
  }
}

/* ========================================================================
   TABLET OPTIMIZATIONS (640px - 1023px)
   ======================================================================== */

@media (min-width: 640px) and (max-width: 1023px) {
  /* 2-column grid on tablets */
  .grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  /* 2-column form layout on tablets */
  .form-row-2 {
    grid-template-columns: repeat(2, 1fr);
  }

  .form-row-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Optimal touch target size for tablets */
  button, .btn {
    min-height: 44px;
  }

  /* Show secondary columns on tablets */
  .hide-tablet {
    display: none !important;
  }
}

/* ========================================================================
   DESKTOP OPTIMIZATIONS (1024px+)
   ======================================================================== */

@media (min-width: 1024px) {
  /* 3-column grid on desktop */
  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  /* 3-column form layout on desktop */
  .form-row-3 {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Show desktop-only columns */
  .hide-desktop {
    display: none !important;
  }

  /* Increase padding on desktop */
  .container {
    padding: 0 var(--space-2xl);
  }

  .container-narrow {
    padding: 0 var(--space-2xl);
  }

  /* Optimal heading sizes for desktop */
  h1 {
    font-size: var(--font-size-5xl);
  }

  h2 {
    font-size: var(--font-size-4xl);
  }

  h3 {
    font-size: var(--font-size-2xl);
  }
}

/* ========================================================================
   LARGE DESKTOP OPTIMIZATIONS (1440px+)
   ======================================================================== */

@media (min-width: 1440px) {
  .container {
    max-width: 1320px;
    margin: 0 auto;
  }

  .container-narrow {
    max-width: 800px;
    margin: 0 auto;
  }

  /* Increase spacing on large screens */
  .mt, .mv {
    margin-top: var(--space-xl);
  }

  .mb, .mv {
    margin-bottom: var(--space-xl);
  }

  .p {
    padding: var(--space-xl);
  }

  .pv {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
  }

  .ph {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

/* ========================================================================
   ACCESSIBILITY: REDUCED MOTION
   ======================================================================== */

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto !important;
  }
}

@media (prefers-contrast: more) {
  :root {
    --color-text-secondary: #4b5563;
    --color-border: #c7ccd3;
    --color-border-light: #d7dce3;
  }

  button,
  .btn,
  .card,
  input,
  select,
  textarea,
  table {
    border-width: 2px;
  }

  .alert {
    border-left-width: 6px;
  }
}

@media (forced-colors: active) {
  *:focus-visible {
    outline: 2px solid Highlight;
  }

  .btn,
  button,
  .card,
  input,
  select,
  textarea,
  table {
    forced-color-adjust: auto;
  }
}

/* ========================================================================
   DARK MODE SUPPORT (Optional, for future implementation)
   ======================================================================== */

@media (prefers-color-scheme: dark) {
  /* Future: Add dark mode color overrides here
  :root {
    --color-text-primary: #f5f5f5;
    --color-bg-white: #1a1a1a;
  }
  */
}