/* ==========================================
   iOS Style Design System - CRM v3.0
   Inspired by iOS 17 Design Language
   ========================================== */

:root {
  /* iOS 17 Color Palette */
  --ios-blue: #007AFF;
  --ios-green: #34C759;
  --ios-red: #FF3B30;
  --ios-orange: #FF9500;
  --ios-yellow: #FFCC00;
  --ios-purple: #AF52DE;
  --ios-pink: #FF2D55;
  --ios-teal: #5AC8FA;
  --ios-indigo: #5856D6;
  
  /* iOS Gradients */
  --ios-gradient-blue: linear-gradient(135deg, #007AFF 0%, #5AC8FA 100%);
  --ios-gradient-green: linear-gradient(135deg, #34C759 0%, #30D158 100%);
  --ios-gradient-orange: linear-gradient(135deg, #FF9500 0%, #FFCC00 100%);
  --ios-gradient-red: linear-gradient(135deg, #FF3B30 0%, #FF2D55 100%);
  --ios-gradient-purple: linear-gradient(135deg, #AF52DE 0%, #5856D6 100%);
  
  /* iOS Background */
  --ios-bg-primary: #F2F2F7;
  --ios-bg-secondary: #FFFFFF;
  --ios-bg-tertiary: #FFFFFF;
  --ios-bg-grouped: #F2F2F7;
  --ios-bg-grouped-secondary: #FFFFFF;
  
  /* iOS Text */
  --ios-text-primary: #000000;
  --ios-text-secondary: #3C3C4399;
  --ios-text-tertiary: #3C3C434D;
  --ios-text-quaternary: #3C3C432E;
  --ios-text-link: #007AFF;
  
  /* iOS Separator */
  --ios-separator: #3C3C434A;
  --ios-separator-opaque: #C6C6C8;
  
  /* iOS Fill */
  --ios-fill-primary: #78788033;
  --ios-fill-secondary: #78788029;
  --ios-fill-tertiary: #7676801F;
  --ios-fill-quaternary: #74748014;
  
  /* iOS Spacing */
  --ios-spacing-xs: 4px;
  --ios-spacing-sm: 8px;
  --ios-spacing-md: 16px;
  --ios-spacing-lg: 20px;
  --ios-spacing-xl: 32px;
  
  /* iOS Border Radius */
  --ios-radius-sm: 8px;
  --ios-radius-md: 12px;
  --ios-radius-lg: 16px;
  --ios-radius-xl: 20px;
  --ios-radius-full: 9999px;
  
  /* iOS Typography */
  --ios-font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
  --ios-font-size-large-title: 34px;
  --ios-font-size-title-1: 28px;
  --ios-font-size-title-2: 22px;
  --ios-font-size-title-3: 20px;
  --ios-font-size-headline: 17px;
  --ios-font-size-body: 17px;
  --ios-font-size-callout: 16px;
  --ios-font-size-subhead: 15px;
  --ios-font-size-footnote: 13px;
  --ios-font-size-caption-1: 12px;
  --ios-font-size-caption-2: 11px;
  
  /* iOS Shadows */
  --ios-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --ios-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --ios-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --ios-shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
  
  /* iOS Animation */
  --ios-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --ios-ease-out: cubic-bezier(0.25, 0.1, 0.25, 1);
  --ios-ease-in-out: cubic-bezier(0.42, 0, 0.58, 1);
  --ios-duration-fast: 0.2s;
  --ios-duration-normal: 0.3s;
  --ios-duration-slow: 0.5s;
}

/* ==========================================
   Dark Mode (iOS Style)
   ========================================== */
[data-theme='dark'] {
  --ios-bg-primary: #000000;
  --ios-bg-secondary: #1C1C1E;
  --ios-bg-tertiary: #2C2C2E;
  --ios-bg-grouped: #000000;
  --ios-bg-grouped-secondary: #1C1C1E;
  
  --ios-text-primary: #FFFFFF;
  --ios-text-secondary: #EBEBF599;
  --ios-text-tertiary: #EBEBF54D;
  --ios-text-quaternary: #EBEBF52E;
  
  --ios-separator: #54545899;
  --ios-separator-opaque: #38383A;
  
  --ios-fill-primary: #78788033;
  --ios-fill-secondary: #78788029;
  --ios-fill-tertiary: #7676801F;
  --ios-fill-quaternary: #74748014;
  
  --ios-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --ios-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --ios-shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --ios-shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
}

/* ==========================================
   Global Styles
   ========================================== */
* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--ios-font-family);
  background-color: var(--ios-bg-primary);
  color: var(--ios-text-primary);
  font-size: var(--ios-font-size-body);
  line-height: 1.5;
  margin: 0;
  padding: 0;
  transition: background-color var(--ios-duration-normal) var(--ios-ease-in-out),
              color var(--ios-duration-normal) var(--ios-ease-in-out);
}

/* ==========================================
   iOS Large Title Navigation Bar
   ========================================== */
.ios-large-title-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--ios-bg-secondary);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: 8px 20px;
  transition: all var(--ios-duration-normal) var(--ios-ease-in-out);
}

.ios-large-title-bar.scrolled {
  padding: 4px 20px;
  box-shadow: var(--ios-shadow-sm);
}

.ios-large-title {
  font-size: var(--ios-font-size-large-title);
  font-weight: 700;
  color: var(--ios-text-primary);
  letter-spacing: -0.5px;
  margin: 0;
  transition: all var(--ios-duration-normal) var(--ios-ease-in-out);
}

.ios-large-title-bar.scrolled .ios-large-title {
  font-size: var(--ios-font-size-headline);
  font-weight: 600;
}

.ios-nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 44px;
  padding: 0 20px;
  background: var(--ios-bg-secondary);
  border-bottom: 0.5px solid var(--ios-separator);
}

.ios-nav-title {
  font-size: var(--ios-font-size-headline);
  font-weight: 600;
  color: var(--ios-text-primary);
}

.ios-nav-back {
  font-size: var(--ios-font-size-body);
  color: var(--ios-blue);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  border: none;
  background: none;
  padding: 0;
}

/* ==========================================
   iOS Widget Grid (Dashboard)
   ========================================== */
.ios-widget-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 20px;
}

.ios-widget {
  background: var(--ios-bg-secondary);
  border-radius: var(--ios-radius-lg);
  padding: 20px;
  box-shadow: var(--ios-shadow-sm);
  transition: all var(--ios-duration-normal) var(--ios-spring);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.ios-widget:hover {
  transform: scale(1.02);
  box-shadow: var(--ios-shadow-md);
}

.ios-widget:active {
  transform: scale(0.98);
}

.ios-widget-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--ios-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 12px;
}

.ios-widget-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--ios-text-primary);
  letter-spacing: -0.5px;
  margin: 4px 0;
}

.ios-widget-label {
  font-size: var(--ios-font-size-footnote);
  color: var(--ios-text-secondary);
  font-weight: 500;
}

.ios-widget-trend {
  font-size: var(--ios-font-size-caption-1);
  font-weight: 600;
  margin-top: 8px;
  display: flex;
  align-items: center;
  gap: 4px;
}

.ios-widget-trend.up {
  color: var(--ios-green);
}

.ios-widget-trend.down {
  color: var(--ios-red);
}

/* ==========================================
   iOS Grouped List (Settings Style)
   ========================================== */
.ios-grouped-list {
  background: var(--ios-bg-grouped);
  padding: 20px 0;
}

.ios-grouped-section {
  margin-bottom: 20px;
}

.ios-grouped-header {
  font-size: var(--ios-font-size-footnote);
  color: var(--ios-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0 20px;
  margin-bottom: 8px;
  font-weight: 500;
}

.ios-grouped-card {
  background: var(--ios-bg-grouped-secondary);
  border-radius: var(--ios-radius-md);
  margin: 0 20px;
  overflow: hidden;
}

.ios-grouped-item {
  display: flex;
  align-items: center;
  padding: 12px 20px;
  border-bottom: 0.5px solid var(--ios-separator);
  cursor: pointer;
  transition: background-color var(--ios-duration-fast) var(--ios-ease-out);
}

.ios-grouped-item:last-child {
  border-bottom: none;
}

.ios-grouped-item:hover {
  background-color: var(--ios-fill-quaternary);
}

.ios-grouped-item-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--ios-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 16px;
  font-size: 18px;
  color: white;
}

.ios-grouped-item-label {
  flex: 1;
  font-size: var(--ios-font-size-body);
  color: var(--ios-text-primary);
}

.ios-grouped-item-value {
  font-size: var(--ios-font-size-body);
  color: var(--ios-text-secondary);
  margin-right: 8px;
}

.ios-grouped-item-arrow {
  color: var(--ios-text-quaternary);
  font-size: 14px;
}

/* ==========================================
   iOS Action Button
   ========================================== */
.ios-action-button {
  background: var(--ios-blue);
  color: white;
  border: none;
  border-radius: var(--ios-radius-full);
  padding: 12px 24px;
  font-size: var(--ios-font-size-body);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--ios-duration-normal) var(--ios-spring);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.ios-action-button:hover {
  transform: scale(1.05);
  opacity: 0.9;
}

.ios-action-button:active {
  transform: scale(0.95);
}

.ios-action-button.destructive {
  background: var(--ios-red);
}

.ios-action-button.secondary {
  background: var(--ios-fill-primary);
  color: var(--ios-blue);
}

/* ==========================================
   iOS Tab Bar (Bottom Navigation)
   ========================================== */
.ios-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 83px;
  background: var(--ios-bg-secondary);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 0.5px solid var(--ios-separator);
  display: flex;
  align-items: flex-start;
  justify-content: space-around;
  padding-top: 8px;
  z-index: 100;
}

.ios-tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  padding: 4px 12px;
  border: none;
  background: none;
  color: var(--ios-text-secondary);
  font-size: var(--ios-font-size-caption-2);
  transition: color var(--ios-duration-fast) var(--ios-ease-out);
}

.ios-tab-item.active {
  color: var(--ios-blue);
}

.ios-tab-item-icon {
  font-size: 24px;
}

.ios-tab-item-label {
  font-size: var(--ios-font-size-caption-2);
  font-weight: 500;
}

/* ==========================================
   iOS Search Bar
   ========================================== */
.ios-search-bar {
  padding: 8px 20px;
  background: var(--ios-bg-primary);
}

.ios-search-input {
  width: 100%;
  height: 36px;
  background: var(--ios-fill-secondary);
  border: none;
  border-radius: var(--ios-radius-sm);
  padding: 0 12px 0 36px;
  font-size: var(--ios-font-size-body);
  color: var(--ios-text-primary);
  outline: none;
  transition: background-color var(--ios-duration-fast) var(--ios-ease-out);
}

.ios-search-input:focus {
  background: var(--ios-fill-primary);
}

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

/* ==========================================
   iOS Badge
   ========================================== */
.ios-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--ios-radius-full);
  font-size: var(--ios-font-size-caption-2);
  font-weight: 600;
  color: white;
}

.ios-badge.blue {
  background: var(--ios-blue);
}

.ios-badge.green {
  background: var(--ios-green);
}

.ios-badge.red {
  background: var(--ios-red);
}

.ios-badge.orange {
  background: var(--ios-orange);
}

/* ==========================================
   iOS Switch (Toggle)
   ========================================== */
.ios-switch {
  width: 51px;
  height: 31px;
  border-radius: 16px;
  background: var(--ios-fill-primary);
  position: relative;
  cursor: pointer;
  transition: background-color var(--ios-duration-normal) var(--ios-ease-in-out);
  border: none;
  padding: 0;
}

.ios-switch.active {
  background: var(--ios-green);
}

.ios-switch-thumb {
  width: 27px;
  height: 27px;
  border-radius: 50%;
  background: white;
  box-shadow: var(--ios-shadow-sm);
  position: absolute;
  top: 2px;
  left: 2px;
  transition: transform var(--ios-duration-normal) var(--ios-spring);
}

.ios-switch.active .ios-switch-thumb {
  transform: translateX(20px);
}

/* ==========================================
   iOS Modal (Sheet)
   ========================================== */
.ios-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 1000;
  animation: iosFadeIn var(--ios-duration-normal) var(--ios-ease-out);
}

.ios-modal-sheet {
  background: var(--ios-bg-secondary);
  border-radius: var(--ios-radius-xl) var(--ios-radius-xl) 0 0;
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 20px;
  animation: iosSlideUp var(--ios-duration-slow) var(--ios-spring);
}

.ios-modal-handle {
  width: 36px;
  height: 5px;
  border-radius: 3px;
  background: var(--ios-fill-primary);
  margin: 0 auto 20px;
}

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

@keyframes iosSlideUp {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

/* ==========================================
   Animations
   ========================================== */
@keyframes iosSpringIn {
  0% {
    transform: scale(0.8);
    opacity: 0;
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes iosSlideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes iosSlideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

.ios-spring-in {
  animation: iosSpringIn 0.5s var(--ios-spring);
}

.ios-slide-in-right {
  animation: iosSlideInRight 0.3s var(--ios-ease-out);
}

/* ==========================================
   Scrollbar (iOS Style)
   ========================================== */
::-webkit-scrollbar {
  width: 0;
  height: 0;
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 768px) {
  .ios-widget-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px;
  }
  
  .ios-large-title {
    font-size: 28px;
  }
  
  .ios-modal-sheet {
    max-height: 95vh;
  }
}