/* ==========================================================================
   AINNA - Minimalist Apple-Style Theme
   Design: White/Light Gray + Pastel Icons + Card-Based Layout
   ========================================================================== */

:root {
  /* Color Palette - Light Mode */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f5f5f7;
  --color-bg-tertiary: #efeff1;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-tertiary: #86868b;
  --color-border: #d2d2d7;
  --color-shadow: rgba(0, 0, 0, 0.08);
  
  /* Pastel Colors for Headers */
  --pastel-blue: #007aff;
  --pastel-blue-light: #e3f2fd;
  --pastel-green: #34c759;
  --pastel-green-light: #e8f5e9;
  --pastel-orange: #ff9500;
  --pastel-orange-light: #fff3e0;
  --pastel-purple: #af52de;
  --pastel-purple-light: #f3e5f5;
  --pastel-pink: #ff2d55;
  --pastel-pink-light: #ffebee;
  --pastel-cyan: #5ac8fa;
  --pastel-cyan-light: #e0f7fa;
  
  /* Status Colors */
  --status-active: #34c759;
  --status-idle: #ff9500;
  --status-error: #ff3b30;
  
  /* Spacing System (8px grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px var(--color-shadow);
  --shadow-md: 0 4px 12px var(--color-shadow);
  --shadow-lg: 0 8px 24px var(--color-shadow);
  --shadow-xl: 0 12px 40px var(--color-shadow);
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'SF Pro Display', 'Segoe UI', Roboto, sans-serif;
  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-primary: #1c1c1e;
    --color-bg-secondary: #2c2c2e;
    --color-bg-tertiary: #3a3a3c;
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #aeaeb2;
    --color-text-tertiary: #8e8e93;
    --color-border: #48484a;
    --color-shadow: rgba(0, 0, 0, 0.3);
  }
}

/* Manual Dark Mode Toggle - HIGH SPECIFICITY */
body.dark-mode {
  --color-bg-primary: #1c1c1e !important;
  --color-bg-secondary: #2c2c2e !important;
  --color-bg-tertiary: #3a3a3c !important;
  --color-text-primary: #f5f5f7 !important;
  --color-text-secondary: #aeaeb2 !important;
  --color-text-tertiary: #8e8e93 !important;
  --color-border: #48484a !important;
  --color-shadow: rgba(0, 0, 0, 0.3) !important;
}

/* Manual Light Mode Override - HIGH SPECIFICITY */
body.light-mode {
  --color-bg-primary: #ffffff !important;
  --color-bg-secondary: #f5f5f7 !important;
  --color-bg-tertiary: #efeff1 !important;
  --color-text-primary: #1d1d1f !important;
  --color-text-secondary: #6e6e73 !important;
  --color-text-tertiary: #86868b !important;
  --color-border: #d2d2d7 !important;
  --color-shadow: rgba(0, 0, 0, 0.08) !important;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--color-text-primary);
  background: var(--color-bg-secondary);
  overflow-x: hidden;
}

/* ==========================================================================
   Sticky Navigation
   ========================================================================== */

.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

body.dark-mode .navbar {
  background: rgba(28, 28, 30, 0.72);
}

.navbar .container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-menu {
  display: flex;
  gap: var(--space-6);
  align-items: center;
}

.nav-link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Dark Mode Toggle Button */
.theme-toggle {
  background: var(--color-bg-tertiary);
  border: none;
  border-radius: 9999px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 20px;
}

.theme-toggle:hover {
  transform: scale(1.05);
  background: var(--color-border);
}

/* ==========================================================================
   Card System
   ========================================================================== */

.card {
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-header {
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: #ffffff;
}

.card-header .icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

/* Pastel Header Variants */
.card-header[data-category="sales"] {
  background: linear-gradient(135deg, var(--pastel-blue) 0%, #5856d6 100%);
}

.card-header[data-category="support"] {
  background: linear-gradient(135deg, var(--pastel-green) 0%, #30b0c7 100%);
}

.card-header[data-category="marketing"] {
  background: linear-gradient(135deg, var(--pastel-purple) 0%, #ff2d55 100%);
}

.card-header[data-category="analytics"] {
  background: linear-gradient(135deg, var(--pastel-orange) 0%, #ff6b6b 100%);
}

.card-header[data-category="default"] {
  background: linear-gradient(135deg, var(--pastel-cyan) 0%, #5ac8fa 100%);
}

.card-body {
  padding: var(--space-6);
  flex: 1;
}

.card-footer {
  display: none;
}

/* ==========================================================================
   Grid System
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Desktop: 3 columns with auto-fit - INLINE STYLE NOW USED */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-6);
}

/* Mobile override */
@media (max-width: 768px) {
  .grid-3 {
    grid-template-columns: 1fr !important;
  }
}
.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

/* Mobile-first: single column by default */
.grid-responsive {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .grid-responsive {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-responsive {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  min-height: 44px; /* Mobile tap target */
  min-width: 44px;
}

.btn-primary {
  background: var(--pastel-blue);
  color: #ffffff;
}

.btn-primary:hover {
  background: #0056b3;
  transform: scale(1.02);
}

.btn-secondary {
  background: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.btn-secondary:hover {
  background: var(--color-border);
}

.btn-ghost {
  background: transparent;
  color: var(--pastel-blue);
}

.btn-ghost:hover {
  background: var(--pastel-blue-light);
}

/* Quick Action Buttons (Small) */
.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
  min-height: 36px;
}

/* ==========================================================================
   Stats & Metrics
   ========================================================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.stat-card {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
  transition: all var(--transition-fast);
}

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

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Status Indicators
   ========================================================================== */

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: 9999px;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.status-badge.active {
  background: var(--pastel-green-light);
  color: var(--pastel-green);
}

.status-badge.idle {
  background: var(--pastel-orange-light);
  color: var(--pastel-orange);
}

.status-badge.error {
  background: var(--pastel-pink-light);
  color: var(--pastel-pink);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.status-dot.active {
  background: var(--pastel-green);
}

.status-dot.idle {
  background: var(--pastel-orange);
}

.status-dot.error {
  background: var(--pastel-pink);
}

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

/* ==========================================================================
   Loading Skeletons
   ========================================================================== */

.skeleton {
  background: linear-gradient(90deg, 
    var(--color-bg-secondary) 25%, 
    var(--color-bg-tertiary) 50%, 
    var(--color-bg-secondary) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

.skeleton-text {
  height: 16px;
  margin-bottom: var(--space-2);
}

.skeleton-title {
  height: 24px;
  margin-bottom: var(--space-4);
}

.skeleton-card {
  padding: var(--space-6);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  background: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--color-border);
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   Glassmorphism (Subtle)
   ========================================================================== */

.glass {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

body.dark-mode .glass {
  background: rgba(28, 28, 30, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   Micro-animations
   ========================================================================== */

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

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

.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   Lazy Loading Placeholder
   ========================================================================== */

.lazy-load {
  background: var(--color-bg-secondary);
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   Container
   ========================================================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Section Spacing */
section {
  padding: var(--space-10) 0;
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-4);
  letter-spacing: -1px;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-10);
}

/* ==========================================================================
   Mobile Optimizations
   ========================================================================== */

@media (max-width: 640px) {
  :root {
    --space-6: 16px;
    --space-8: 24px;
    --space-10: 32px;
  }
  
  /* Burger Menu */
  .burger-menu {
    display: block !important;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-primary);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-4);
    box-shadow: -4px 0 20px rgba(0,0,0,0.2);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.95);
    transform-origin: top right;
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
  }
  
  .nav-menu.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
  }
  
  .nav-link {
    font-size: var(--font-size-lg);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
  }
  
  .nav-right {
    position: fixed;
    top: var(--space-4);
    right: calc(var(--space-4) + 50px);
    display: flex;
    gap: var(--space-2);
  }
  
  .navbar .container {
    justify-content: space-between;
  }
  
  /* Overlay */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
  }
  
  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }
  
  .card-body {
    padding: var(--space-4);
  }
  
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
  .navbar,
  .theme-toggle,
  .btn,
  .empty-state {
    display: none !important;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #000;
  }
}



/* ========== MOBILE FIX: Force 1 column for grid-3 ========== */
@media screen and (max-width: 768px) {
  .grid.grid-3,
  .grid-3 {
    grid-template-columns: 1fr !important;
    display: grid !important;
    gap: var(--space-4) !important;
  }
}