/* ==========================================================================
   ACADEMIA SK · Formación y Negocio para Profesionales de la Estética
   Sistema de Diseño Apple iOS (Human Interface Guidelines)
   Titular: José Ávila · Asesor de Zona Skeyndor Andalucía
   ========================================================================== */

:root {
  /* Paleta iOS - Modo Claro (Predeterminado) */
  --ios-bg: #F2F2F7;
  --ios-card-bg: #FFFFFF;
  --ios-card-elevated: #FFFFFF;
  --ios-card-subtle: #F8F9FA;
  --ios-separator: rgba(60, 60, 67, 0.12);
  --ios-border: rgba(60, 60, 67, 0.08);

  /* Tipografía */
  --ios-label: #000000;
  --ios-secondary-label: #6C6C70;
  --ios-tertiary-label: #8E8E93;
  --ios-quaternary-label: #C7C7CC;

  /* Acentos de Marca Skeyndor / Asesor */
  --sk-navy: #002B49;
  --sk-navy-light: #0A3D62;
  --sk-gold: #C5A059;
  --sk-gold-light: #E5C384;
  --sk-gold-dark: #9A7B38;
  --sk-gold-bg: rgba(197, 160, 89, 0.12);

  /* Acentos Funcionales iOS */
  --ios-blue: #007AFF;
  --ios-green: #34C759;
  --ios-orange: #FF9500;
  --ios-red: #FF3B30;
  --ios-purple: #AF52DE;
  --ios-teal: #30B0C7;

  /* Sombras Apple */
  --ios-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --ios-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --ios-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);

  /* Radios & Transiciones */
  --ios-radius-xs: 8px;
  --ios-radius-sm: 12px;
  --ios-radius-md: 16px;
  --ios-radius-lg: 20px;
  --ios-radius-xl: 28px;
  --ios-transition: all 0.25s cubic-bezier(0.25, 0.1, 0.25, 1);

  /* Tab Bar */
  --tab-bar-height: 68px;
}

/* Modo Oscuro iOS */
[data-theme="dark"] {
  --ios-bg: #000000;
  --ios-card-bg: #1C1C1E;
  --ios-card-elevated: #2C2C2E;
  --ios-card-subtle: #242426;
  --ios-separator: rgba(255, 255, 255, 0.15);
  --ios-border: rgba(255, 255, 255, 0.1);

  --ios-label: #FFFFFF;
  --ios-secondary-label: #8E8E93;
  --ios-tertiary-label: #636366;
  --ios-quaternary-label: #48484A;

  --sk-navy: #0A3D62;
  --sk-navy-light: #1A5276;
  --sk-gold: #D4AF37;
  --sk-gold-light: #F9E79F;
  --sk-gold-dark: #B7950B;
  --sk-gold-bg: rgba(212, 175, 55, 0.18);

  --ios-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --ios-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --ios-shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.6);
}

/* Reseteo y Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue", sans-serif;
  background-color: var(--ios-bg);
  color: var(--ios-label);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  padding-bottom: calc(var(--tab-bar-height) + 32px);
  background-color: var(--ios-bg);
  color: var(--ios-label);
  overflow-x: hidden;
}

/* Tipografía iOS */
h1, .ios-large-title {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ios-label);
  line-height: 1.15;
}

h2, .ios-title-1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ios-label);
  line-height: 1.25;
}

h3, .ios-title-2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--ios-label);
}

h4, .ios-headline {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ios-label);
}

p, .ios-body {
  font-size: 0.95rem;
  color: var(--ios-secondary-label);
  line-height: 1.5;
}

.ios-caption {
  font-size: 0.8rem;
  color: var(--ios-tertiary-label);
  font-weight: 500;
}

/* Contenedor Principal */
.ios-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.25rem 1.25rem 2rem;
}

@media (min-width: 768px) {
  .ios-container {
    padding: 2rem 2rem 3rem;
  }
}

/* Barra Superior de Cabecera */
.ios-nav-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(242, 242, 247, 0.85);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 0.5px solid var(--ios-separator);
  padding: 0.75rem 1.25rem;
  transition: var(--ios-transition);
}

[data-theme="dark"] .ios-nav-header {
  background: rgba(0, 0, 0, 0.85);
}

.ios-nav-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.ios-nav-brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ios-label);
}

.sk-logo-emblem {
  width: 38px;
  height: 38px;
  border-radius: var(--ios-radius-sm);
  background: linear-gradient(135deg, var(--sk-navy) 0%, #001827 100%);
  border: 1px solid var(--sk-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.ios-nav-brand-text {
  display: flex;
  flex-direction: column;
}

.ios-nav-brand-title {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--ios-label);
}

.ios-nav-brand-subtitle {
  font-size: 0.72rem;
  color: var(--sk-gold);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.ios-nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.ios-theme-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 0.5px solid var(--ios-border);
  background: var(--ios-card-bg);
  color: var(--ios-label);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: var(--ios-shadow-sm);
  transition: var(--ios-transition);
}

.ios-theme-btn:hover {
  transform: scale(1.05);
}

/* Tarjetas Apple iOS */
.ios-card {
  background: var(--ios-card-bg);
  border-radius: var(--ios-radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--ios-shadow-sm);
  border: 0.5px solid var(--ios-border);
  transition: var(--ios-transition);
}

@media (min-width: 768px) {
  .ios-card {
    padding: 1.5rem;
    margin-bottom: 1.25rem;
  }
}

.ios-card-hero {
  background: linear-gradient(135deg, var(--sk-navy) 0%, #051A2E 100%);
  color: #FFFFFF;
  border: 1px solid var(--sk-gold);
  position: relative;
  overflow: hidden;
}

.ios-card-hero * {
  color: #FFFFFF;
}

.ios-card-hero .ios-caption {
  color: var(--sk-gold-light);
}

/* Badges / Píldoras iOS */
.ios-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.ios-badge-gold {
  background: var(--sk-gold-bg);
  color: var(--sk-gold);
  border: 0.5px solid rgba(197, 160, 89, 0.4);
}

.ios-badge-blue {
  background: rgba(0, 122, 255, 0.12);
  color: var(--ios-blue);
}

.ios-badge-green {
  background: rgba(52, 199, 89, 0.12);
  color: var(--ios-green);
}

/* Segmented Controls estilo iOS */
.ios-segmented-control {
  display: flex;
  background: rgba(118, 118, 128, 0.12);
  padding: 3px;
  border-radius: var(--ios-radius-sm);
  margin-bottom: 1.25rem;
  overflow-x: auto;
  scrollbar-width: none;
}

.ios-segmented-control::-webkit-scrollbar {
  display: none;
}

.ios-segment-btn {
  flex: 1;
  min-width: fit-content;
  padding: 0.45rem 0.85rem;
  border: none;
  background: transparent;
  color: var(--ios-secondary-label);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 9px;
  cursor: pointer;
  transition: var(--ios-transition);
  text-align: center;
  white-space: nowrap;
}

.ios-segment-btn.active {
  background: var(--ios-card-bg);
  color: var(--ios-label);
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
}

/* Buscador iOS estilo Search Bar */
.ios-search-bar {
  display: flex;
  align-items: center;
  background: rgba(118, 118, 128, 0.12);
  border-radius: var(--ios-radius-sm);
  padding: 0.55rem 0.85rem;
  margin-bottom: 1.25rem;
  gap: 0.5rem;
}

.ios-search-bar input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 0.95rem;
  color: var(--ios-label);
  outline: none;
}

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

/* Botones Apple iOS */
.ios-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--ios-radius-sm);
  font-size: 0.92rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: var(--ios-transition);
  text-decoration: none;
  text-align: center;
}

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

.ios-btn-primary {
  background: var(--sk-navy);
  color: #FFFFFF;
  box-shadow: var(--ios-shadow-sm);
}

[data-theme="dark"] .ios-btn-primary {
  background: var(--sk-gold);
  color: #000000;
}

.ios-btn-gold {
  background: linear-gradient(135deg, var(--sk-gold) 0%, var(--sk-gold-dark) 100%);
  color: #FFFFFF;
}

.ios-btn-whatsapp {
  background: #25D366;
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.3);
}

.ios-btn-secondary {
  background: rgba(118, 118, 128, 0.12);
  color: var(--ios-label);
}

.ios-btn-block {
  width: 100%;
}

/* Tab Bar Inferior Fija estilo iOS */
.ios-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--tab-bar-height);
  background: rgba(242, 242, 247, 0.88);
  -webkit-backdrop-filter: blur(25px);
  backdrop-filter: blur(25px);
  border-top: 0.5px solid var(--ios-separator);
  display: flex;
  align-items: center;
  justify-content: space-around;
  z-index: 1000;
  padding-bottom: env(safe-area-inset-bottom);
}

[data-theme="dark"] .ios-tab-bar {
  background: rgba(28, 28, 30, 0.88);
}

.ios-tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  height: 100%;
  color: var(--ios-tertiary-label);
  text-decoration: none;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: var(--ios-transition);
  padding: 0.35rem 0.2rem;
  gap: 0.25rem;
}

.ios-tab-item svg {
  width: 24px;
  height: 24px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  transition: var(--ios-transition);
}

.ios-tab-item span {
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

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

[data-theme="dark"] .ios-tab-item.active {
  color: var(--sk-gold);
}

.ios-tab-item.active svg {
  stroke-width: 2.2;
}

/* Vistas de Pestañas */
.tab-view {
  display: none;
  animation: iosFadeIn 0.25s ease;
}

.tab-view.active {
  display: block;
}

@keyframes iosFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Anillo de Progreso Apple Circular */
.ios-progress-ring-wrap {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.ios-progress-ring {
  position: relative;
  width: 76px;
  height: 76px;
  flex-shrink: 0;
}

.ios-progress-ring svg {
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
}

.ios-progress-ring circle {
  fill: none;
  stroke-width: 7;
  stroke-linecap: round;
}

.ios-progress-ring-bg {
  stroke: rgba(118, 118, 128, 0.15);
}

.ios-progress-ring-fill {
  stroke: var(--sk-gold);
  stroke-dasharray: 219.9;
  stroke-dashoffset: 219.9;
  transition: stroke-dashoffset 0.8s ease;
}

.ios-progress-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ios-label);
}

/* Grid de Accesos Rápidos */
.ios-quick-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-top: 1rem;
}

@media (min-width: 640px) {
  .ios-quick-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.ios-quick-card {
  background: var(--ios-card-subtle);
  border-radius: var(--ios-radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--ios-label);
  border: 0.5px solid var(--ios-border);
  cursor: pointer;
  transition: var(--ios-transition);
}

.ios-quick-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--ios-shadow-md);
  background: var(--ios-card-bg);
}

.ios-quick-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--ios-radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

/* Acordeón de Objeciones */
.objection-card {
  background: var(--ios-card-bg);
  border-radius: var(--ios-radius-md);
  border: 0.5px solid var(--ios-border);
  margin-bottom: 0.75rem;
  overflow: hidden;
  box-shadow: var(--ios-shadow-sm);
  transition: var(--ios-transition);
}

.objection-header {
  padding: 1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
}

.objection-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--ios-label);
  line-height: 1.35;
}

.objection-chevron {
  width: 20px;
  height: 20px;
  color: var(--ios-tertiary-label);
  transition: transform 0.25s ease;
  flex-shrink: 0;
  margin-left: 0.5rem;
}

.objection-card.open .objection-chevron {
  transform: rotate(180deg);
}

.objection-content {
  display: none;
  padding: 0 1.25rem 1.25rem;
  border-top: 0.5px solid var(--ios-separator);
  animation: iosFadeIn 0.2s ease;
}

.objection-card.open .objection-content {
  display: block;
}

.objection-block {
  margin-top: 1rem;
}

.objection-block-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--sk-gold);
  letter-spacing: 0.04em;
  margin-bottom: 0.35rem;
}

.objection-script {
  background: var(--ios-card-subtle);
  border-left: 3px solid var(--sk-gold);
  padding: 0.85rem 1rem;
  border-radius: 0 var(--ios-radius-xs) var(--ios-radius-xs) 0;
  font-size: 0.92rem;
  color: var(--ios-label);
  line-height: 1.55;
  font-style: italic;
}

.objection-question {
  background: rgba(0, 122, 255, 0.08);
  border-left: 3px solid var(--ios-blue);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--ios-radius-xs) var(--ios-radius-xs) 0;
  font-size: 0.92rem;
  color: var(--ios-label);
  font-weight: 600;
}

/* Modo Cabina: Checklist & Temporizador */
.cabin-step-card {
  background: var(--ios-card-bg);
  border-radius: var(--ios-radius-md);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  border: 0.5px solid var(--ios-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: var(--ios-transition);
}

.cabin-step-card.completed {
  opacity: 0.65;
  background: var(--ios-card-subtle);
}

.cabin-timer-display {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", monospace;
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-align: center;
  color: var(--ios-label);
  margin: 1rem 0;
}

/* Creador de Carteles / Canvas Poster Preview */
.poster-preview-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin: 1.25rem 0;
}

.poster-canvas-wrap {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 4 / 5;
  border-radius: var(--ios-radius-lg);
  overflow: hidden;
  box-shadow: var(--ios-shadow-lg);
  border: 1px solid var(--ios-border);
}

#poster-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Formularios iOS */
.ios-form-group {
  margin-bottom: 1rem;
}

.ios-form-label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--ios-secondary-label);
  margin-bottom: 0.35rem;
}

.ios-input, .ios-select, .ios-textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  border-radius: var(--ios-radius-sm);
  background: var(--ios-card-subtle);
  border: 0.5px solid var(--ios-border);
  color: var(--ios-label);
  font-size: 0.95rem;
  outline: none;
  font-family: inherit;
  transition: var(--ios-transition);
}

.ios-input:focus, .ios-select:focus, .ios-textarea:focus {
  border-color: var(--ios-blue);
  background: var(--ios-card-bg);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.15);
}

/* Hoja de Pedido B2B */
.order-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  border-bottom: 0.5px solid var(--ios-separator);
  gap: 0.75rem;
}

.order-stepper {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--ios-card-subtle);
  border-radius: var(--ios-radius-xs);
  padding: 2px;
}

.order-stepper-btn {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: none;
  background: var(--ios-card-bg);
  color: var(--ios-label);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.order-stepper-qty {
  width: 32px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--ios-label);
}

.order-floating-bar {
  position: sticky;
  bottom: calc(var(--tab-bar-height) + 8px);
  background: var(--ios-card-bg);
  border-radius: var(--ios-radius-md);
  padding: 1rem 1.25rem;
  box-shadow: var(--ios-shadow-lg);
  border: 1px solid var(--sk-gold);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  z-index: 850;
  margin-top: 1.5rem;
}

/* Modales iOS Sheet */
.ios-sheet {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  z-index: 1100;
  display: none;
  align-items: flex-end;
  justify-content: center;
}

.ios-sheet.active {
  display: flex;
}

.ios-sheet-card {
  background: var(--ios-card-bg);
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  border-radius: var(--ios-radius-xl) var(--ios-radius-xl) 0 0;
  padding: 1.5rem;
  overflow-y: auto;
  box-shadow: var(--ios-shadow-lg);
  animation: iosSlideUp 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
}

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

.ios-sheet-handle {
  width: 36px;
  height: 5px;
  background: var(--ios-quaternary-label);
  border-radius: 99px;
  margin: 0 auto 1.25rem;
}

/* Toast */
.ios-toast {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(-20px);
  background: rgba(0, 0, 0, 0.85);
  color: #FFFFFF;
  padding: 0.65rem 1.25rem;
  border-radius: 99px;
  font-size: 0.88rem;
  font-weight: 500;
  z-index: 2000;
  box-shadow: var(--ios-shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.2, 0.9, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

/* Imprimible */
@media print {
  .ios-tab-bar, .ios-nav-header, .order-floating-bar, .no-print {
    display: none !important;
  }
  body {
    background: #FFFFFF !important;
    color: #000000 !important;
    padding: 0 !important;
  }
  .ios-card {
    box-shadow: none !important;
    border: 1px solid #CCC !important;
  }
}