:root {
  /* Colores Granvivir */
  --primary-color: #6B3AA0;
  --secondary-color: #2D5F3F;
  --accent-color: #8BC34A;
  --success-color: #8BC34A;
  --warning-color: #FFA726;
  --danger-color: #EF5350;

  /* Grises iOS */
  --ios-background: #F2F2F7;
  --ios-secondary-bg: #FFFFFF;
  --ios-tertiary-bg: #F2F2F7;
  --ios-grouped-bg: #F2F2F7;
  --ios-border: #E5E5EA;
  --ios-separator: #C8C7CC;
  --ios-text-primary: rgba(0, 0, 0, 0.85);
  --ios-text-secondary: #8E8E93;
  --ios-text-tertiary: #C7C7CC;

  /* Efectos */
  --ios-shadow: 0 3px 12px rgba(0, 0, 0, 0.08);
  --ios-shadow-hover: 0 5px 15px rgba(0, 0, 0, 0.12);
  --ios-blur: saturate(180%) blur(20px);
  --ios-radius: 12px;
  --ios-radius-large: 20px;

  /* Transiciones */
  --ios-transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ios-spring: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset y Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

html {
  font-size: 17px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--ios-background);
  color: var(--ios-text-primary);
  line-height: 1.47059;
  font-weight: 400;
  min-height: 100vh;
  overflow-x: hidden;
  padding-bottom: calc(49px + env(safe-area-inset-bottom));
}


/* Navbar iOS */
.ios-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 44px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: var(--ios-blur);
  -webkit-backdrop-filter: var(--ios-blur);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border-bottom: 0.5px solid var(--ios-border);
}

.ios-navbar-title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.4px;
}

.ios-navbar-back {
  display: flex;
  align-items: center;
  color: var(--primary-color);
  text-decoration: none;
  font-size: 17px;
  transition: var(--ios-transition);
}

.ios-navbar-back:active {
  opacity: 0.3;
}

/* Tab Bar */
.ios-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 49px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: var(--ios-blur);
  -webkit-backdrop-filter: var(--ios-blur);
  border-top: 0.5px solid var(--ios-border);
  display: flex;
  justify-content: space-around;
  align-items: center;
  z-index: 9999;
  padding-bottom: env(safe-area-inset-bottom);
}


.ios-tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--ios-text-secondary);
  text-decoration: none;
  transition: var(--ios-transition);
  position: relative;
}

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

.ios-tab-icon {
  font-size: 24px;
  margin-bottom: 2px;
}

.ios-tab-label {
  font-size: 10px;
  font-weight: 500;
}

.ios-badge {
  position: absolute;
  top: 2px;
  right: calc(50% - 16px);
  background: var(--danger-color);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 5px;
  border-radius: 10px;
  min-width: 18px;
  text-align: center;
}

/* Cards */
.ios-card {
  background: var(--ios-secondary-bg);
  border-radius: var(--ios-radius);
  padding: 16px;
  margin: 8px 16px;
  box-shadow: var(--ios-shadow);
  transition: var(--ios-transition);
}

.ios-card:active {
  transform: scale(0.98);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* Botones */
.ios-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--ios-radius);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.4px;
  cursor: pointer;
  transition: var(--ios-transition);
  min-height: 44px;
  min-width: 44px;
  text-decoration: none;
}

.ios-button:active {
  transform: scale(0.95);
  opacity: 0.9;
}

.ios-button-secondary {
  background: var(--ios-secondary-bg);
  color: var(--primary-color);
  border: 1px solid var(--ios-border);
}

.ios-button-ghost {
  background: transparent;
  color: var(--primary-color);
  padding: 8px 16px;
}

.ios-button-large {
  width: 100%;
  padding: 16px;
  font-size: 17px;
  font-weight: 600;
}

/* Formularios */
.ios-input-group {
  margin-bottom: 16px;
  background: var(--ios-secondary-bg);
  border-radius: var(--ios-radius);
  overflow: hidden;
}

.ios-input-label {
  display: block;
  padding: 12px 16px 4px;
  font-size: 13px;
  color: var(--ios-text-secondary);
  font-weight: 400;
}

.ios-input {
  width: 100%;
  padding: 8px 16px 12px;
  border: none;
  background: transparent;
  font-size: 17px;
  color: var(--ios-text-primary);
  outline: none;
}

.ios-input:focus {
  background: rgba(107, 58, 160, 0.03);
}

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

/* Switch Toggle */
.ios-switch {
  position: relative;
  width: 51px;
  height: 31px;
  background: var(--ios-separator);
  border-radius: 31px;
  cursor: pointer;
  transition: var(--ios-transition);
}

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

.ios-switch-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 27px;
  height: 27px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.15);
  transition: var(--ios-transition);
}

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

/* Segmented Control */
.ios-segmented {
  display: flex;
  background: var(--ios-tertiary-bg);
  border-radius: 9px;
  padding: 2px;
  margin: 16px;
}

.ios-segment {
  flex: 1;
  padding: 8px 16px;
  text-align: center;
  font-size: 13px;
  font-weight: 500;
  color: var(--ios-text-primary);
  background: transparent;
  border: none;
  border-radius: 7px;
  cursor: pointer;
  transition: var(--ios-transition);
}

.ios-segment.active {
  background: white;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.12);
}

/* Lista */
.ios-list {
  background: var(--ios-secondary-bg);
  margin: 16px;
  border-radius: var(--ios-radius);
  overflow: hidden;
}

.ios-list-item {
  padding: 12px 16px;
  border-bottom: 0.5px solid var(--ios-separator);
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 44px;
  transition: var(--ios-transition);
  cursor: pointer;
  text-decoration: none;
  color: var(--ios-text-primary);
}

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

.ios-list-item:active {
  background: var(--ios-tertiary-bg);
}

.ios-list-title {
  font-size: 17px;
  font-weight: 400;
}

.ios-list-subtitle {
  font-size: 13px;
  color: var(--ios-text-secondary);
  margin-top: 2px;
}

.ios-list-chevron {
  color: var(--ios-text-tertiary);
  font-size: 14px;
}

/* Search Bar */
.ios-search {
  margin: 8px 16px;
  position: relative;
}

.ios-search-input {
  width: 100%;
  padding: 8px 36px 8px 36px;
  background: var(--ios-tertiary-bg);
  border: none;
  border-radius: 10px;
  font-size: 17px;
  outline: none;
}

.ios-search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ios-text-tertiary);
}

/* Modal */
.ios-modal {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ios-secondary-bg);
  border-radius: var(--ios-radius-large) var(--ios-radius-large) 0 0;
  transform: translateY(100%);
  transition: transform 0.4s var(--ios-spring);
  z-index: 2000;
  max-height: 90vh;
  overflow-y: auto;
}

.ios-modal.active {
  transform: translateY(0);
}

.ios-modal-handle {
  width: 36px;
  height: 5px;
  background: var(--ios-separator);
  border-radius: 3px;
  margin: 8px auto 16px;
}

.ios-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transition: var(--ios-transition);
  z-index: 1999;
}

.ios-modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Action Sheet */
.ios-action-sheet {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2000;
  padding: 8px;
  transform: translateY(100%);
  transition: transform 0.3s var(--ios-spring);
}

.ios-action-sheet.active {
  transform: translateY(0);
}

.ios-action-group {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: var(--ios-blur);
  -webkit-backdrop-filter: var(--ios-blur);
  border-radius: 14px;
  margin-bottom: 8px;
  overflow: hidden;
}

.ios-action-item {
  padding: 18px;
  text-align: center;
  font-size: 20px;
  color: var(--primary-color);
  border-bottom: 0.5px solid var(--ios-border);
  cursor: pointer;
  transition: var(--ios-transition);
}

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

.ios-action-item:active {
  background: var(--ios-tertiary-bg);
}

.ios-action-item.destructive {
  color: var(--danger-color);
}

.ios-action-cancel {
  font-weight: 600;
}

/* Progress */
.ios-progress {
  height: 4px;
  background: var(--ios-tertiary-bg);
  border-radius: 2px;
  overflow: hidden;
  margin: 16px;
}

.ios-progress-bar {
  height: 100%;
  background: var(--primary-color);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.ios-progress-circle {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto;
}

.ios-progress-circle svg {
  transform: rotate(-90deg);
}

.ios-progress-circle-bg {
  stroke: var(--ios-tertiary-bg);
  stroke-width: 8;
  fill: none;
}

.ios-progress-circle-fill {
  stroke: var(--primary-color);
  stroke-width: 8;
  fill: none;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.5s ease;
}

.ios-progress-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 20px;
  font-weight: 600;
  color: var(--ios-text-primary);
}

/* Avatar */
.ios-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--ios-tertiary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 500;
  color: var(--ios-text-secondary);
  overflow: hidden;
}

.ios-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ios-avatar-large {
  width: 80px;
  height: 80px;
  font-size: 32px;
}

/* Floating Action Button */
.ios-fab {
  position: fixed;
  bottom: 80px;
  right: 16px;
  width: 56px;
  height: 56px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(107, 58, 160, 0.3);
  cursor: pointer;
  transition: var(--ios-transition);
  z-index: 900;
}

.ios-fab:active {
  transform: scale(0.9);
}

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

/* Toast */
.ios-toast {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background: rgba(0, 0, 0, 0.85);
  color: white;
  padding: 12px 24px;
  border-radius: 24px;
  font-size: 14px;
  z-index: 3000;
  opacity: 0;
  transition: all 0.3s var(--ios-spring);
}

.ios-toast.active {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Skeleton Loader */
.ios-skeleton {
  background: linear-gradient(90deg, var(--ios-tertiary-bg) 25%, var(--ios-border) 50%, var(--ios-tertiary-bg) 75%);
  background-size: 200% 100%;
  animation: skeleton 1.5s infinite;
  border-radius: 4px;
}

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

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --ios-background: #000000;
    --ios-secondary-bg: #1C1C1E;
    --ios-tertiary-bg: #2C2C2E;
    --ios-grouped-bg: #000000;
    --ios-border: #38383A;
    --ios-separator: #48484A;
    --ios-text-primary: rgba(255, 255, 255, 0.85);
    --ios-text-secondary: #98989E;
    --ios-text-tertiary: #48484A;
    --ios-shadow: 0 3px 12px rgba(0, 0, 0, 0.3);
  }

  .ios-navbar,
  .ios-tabbar {
    background: rgba(28, 28, 30, 0.85);
  }

  .ios-toast {
    background: rgba(255, 255, 255, 0.85);
    color: black;
  }
}

/* Responsive */
@media (min-width: 768px) {
  .ios-container {
    max-width: 768px;
    margin: 0 auto;
  }
}

/* Safe Areas */
.ios-safe-top {
  padding-top: env(safe-area-inset-top);
}

.ios-safe-bottom {
  padding-bottom: env(safe-area-inset-bottom);
}

/* Utilities */
.ios-mt-1 { margin-top: 8px; }
.ios-mt-2 { margin-top: 16px; }
.ios-mt-3 { margin-top: 24px; }
.ios-mb-1 { margin-bottom: 8px; }
.ios-mb-2 { margin-bottom: 16px; }
.ios-mb-3 { margin-bottom: 24px; }
.ios-p-1 { padding: 8px; }
.ios-p-2 { padding: 16px; }
.ios-p-3 { padding: 24px; }
.ios-text-center { text-align: center; }
.ios-text-primary { color: var(--primary-color); }
.ios-text-secondary { color: var(--ios-text-secondary); }
.ios-font-bold { font-weight: 600; }
.ios-hidden { display: none; }