/* ========== VARIABLES CSS ========== */
:root {
  /* Colores principales - Más vibrantes para 2025/2026 */
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-secondary: #64748b;
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;
  
  /* Colores de fondo - Glassmorphism ready */
  --bg-primary: rgba(255, 255, 255, 0.95);
  --bg-secondary: rgba(248, 250, 252, 0.8);
  --bg-tertiary: rgba(241, 245, 249, 0.6);
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-glass: rgba(255, 255, 255, 0.7);
  --bg-glass-dark: rgba(0, 0, 0, 0.1);
  
  /* Colores de texto */
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --text-muted: #adb5bd;
  --text-light: #ffffff;
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Bordes - Más redondeados para 2025/2026 */
  --border-radius-sm: 0.5rem;
  --border-radius-md: 0.875rem;
  --border-radius-lg: 1.25rem;
  --border-radius-xl: 2rem;
  --border-width: 1px;
  --border-color: rgba(226, 232, 240, 0.8);
  --border-glass: 1px solid rgba(255, 255, 255, 0.3);
  
  /* Sombras - Más suaves y modernas para 2025/2026 */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
  --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  
  /* Transiciones */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Tipografía */
  --font-family-base: 'Inter', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ========== MODO OSCURO ========== */
[data-theme="dark"] {
  /* Colores principales en modo oscuro */
  --color-primary: #818cf8;
  --color-primary-dark: #6366f1;
  --color-primary-light: #a5b4fc;
  
  /* Colores de fondo oscuros */
  --bg-primary: rgba(15, 23, 42, 0.95);
  --bg-secondary: rgba(30, 41, 59, 0.8);
  --bg-tertiary: rgba(51, 65, 85, 0.6);
  --bg-glass: rgba(15, 23, 42, 0.7);
  --bg-glass-dark: rgba(0, 0, 0, 0.3);
  
  /* Colores de texto oscuros */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  
  /* Bordes oscuros */
  --border-color: rgba(51, 65, 85, 0.8);
  --border-glass: 1px solid rgba(255, 255, 255, 0.1);
  
  /* Fondo del body oscuro */
  --body-bg: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
}

[data-theme="dark"] body {
  background: var(--body-bg);
}

/* Forzar color de texto oscuro en inputs incluso en modo oscuro (porque el fondo es claro) */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-control:focus {
  color: #212529 !important; /* Texto oscuro para inputs */
  background: rgba(255, 255, 255, 0.95) !important; /* Fondo claro */
}

/* ========== RESET Y BASE ========== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

/* ========== ESTILOS GENERALES ========== */
body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: var(--spacing-md);
}

/* Screen reader only */
.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;
}

/* ========== CONTENEDOR PRINCIPAL ========== */
.container {
  width: 100%;
  max-width: 480px;
  margin: var(--spacing-xs) auto;
  padding: var(--spacing-xl);
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: var(--border-glass);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-glass);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.container::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--bg-gradient);
  opacity: 0.8;
}

/* ========== HEADER ========== */
.header {
  margin-bottom: var(--spacing-lg);
}

.header h1 {
  margin-bottom: var(--spacing-xs);
}

h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: var(--font-size-lg);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.brand-name {
  background: var(--bg-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

/* ========== FORMULARIO ========== */
.routine-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.routine-form.form-error {
  border: 2px solid #ef4444;
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  background: rgba(239, 68, 68, 0.05);
}

.form-error-message {
  color: #ef4444;
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: rgba(239, 68, 68, 0.1);
  border-radius: var(--border-radius-sm);
  border-left: 3px solid #ef4444;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: 0;
}

.form-group:not(:last-child) {
  margin-bottom: var(--spacing-md);
}

.form-control {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-lg);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-lg);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  color: var(--text-primary) !important; /* Forzar color de texto */
  transition: all var(--transition-base);
  resize: vertical;
}

.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15), var(--shadow-md);
  transform: translateY(-2px);
  color: #212529 !important; /* Forzar color de texto oscuro en focus */
}

.form-control:hover:not(:focus) {
  border-color: var(--color-primary-light);
}

.form-control.error {
  border-color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

.form-control.error:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.25);
}

.error-message {
  color: #ef4444;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  display: block;
  font-weight: 500;
}

textarea.form-control {
  min-height: 120px;
  line-height: 1.6;
  font-family: var(--font-family-base);
}

button.cta-button:disabled {
  background-color: #cccccc; /* Fondo gris claro */
  color: #666666; /* Texto gris oscuro */
  cursor: not-allowed; /* Cursor de no permitido */
  box-shadow: none; /* Sin sombra */
}

button.cta-button:disabled .routine-count {
  color: #666666; /* Asegúrate de que el texto sea visible */
}


/* ========== BOTÓN CTA ========== */
.cta-button {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  width: 100%;
  min-height: 52px;
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border: none;
  border-radius: var(--border-radius-lg);
  font-family: var(--font-family-base);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-light);
  cursor: pointer;
  text-align: center;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transition: all var(--transition-base);
  z-index: 1;
  line-height: 1.4;
}

.cta-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.cta-button:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: var(--shadow-xl), var(--shadow-glow);
  filter: brightness(1.05);
}

.cta-button:hover::before {
  opacity: 1;
}

.cta-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

/* Área de "carga" dentro del botón */
.fuel {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, #10b981, #34d399);
  transition: height 0.5s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 0;
}

button.cta-button:disabled .fuel {
  height: 0;
  background: none;
}

.fuel.low {
  background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.fuel.critical {
  background: linear-gradient(90deg, #ef4444, #f87171);
}

/* Contador dentro del botón */
.routine-count {
  position: relative;
  z-index: 2;
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-light);
  text-align: center;
}

.routine-text {
  position: relative;
  z-index: 2;
  color: var(--text-light);
  font-weight: 600;
}

button.cta-button:disabled {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
}

button.cta-button:disabled .routine-text {
  color: var(--text-muted);
}

/* Cuadro de respuesta */
/* ========== IMÁGENES DE EXPLICACIÓN ========== */
.explain-image {
  max-width: 100%;
  height: auto;
  display: block;
  margin: var(--spacing-md) auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base);
}

.explain-image:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

/* ========== CAJA DE RESPUESTA ========== */
.response-box {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--spacing-lg);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  color: #212529;
  font-size: var(--font-size-base);
  line-height: 1.7;
  white-space: pre-wrap;
  max-width: 100%;
  margin-top: var(--spacing-xl);
  text-align: justify;
  box-shadow: var(--shadow-md);
  animation: fadeInUp 0.4s ease-out;
}

/* Modo oscuro para response-box */
[data-theme="dark"] .response-box {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.95) 0%, rgba(51, 65, 85, 0.9) 100%);
  color: var(--text-primary);
  border-color: var(--border-color);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== ELEMENTOS DE RESPUESTA ========== */
.response-content {
  width: 100%;
  color: inherit;
}

/* Asegurar contraste en modo oscuro */
[data-theme="dark"] .response-content {
  color: var(--text-primary);
}

[data-theme="dark"] .response-content p,
[data-theme="dark"] .response-content div,
[data-theme="dark"] .response-content span {
  color: var(--text-primary);
}

.response-actions {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
  padding-top: var(--spacing-md);
  border-top: var(--border-width) solid var(--border-color);
  width: 100%;
}

.go-back {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
}

.go-back:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
  transform: translateX(-2px);
}

/* Estilo de enlaces en el contenido */
.response-box a,
.explain-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.response-box a:hover,
.explain-link:hover {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-dark);
}

/* Botón de copiar */
.copy-icon {
  cursor: pointer;
  font-size: var(--font-size-base);
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: 0;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-base);
  font-weight: 500;
}

.copy-icon:hover {
  background: var(--bg-tertiary);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.copy-icon.copiado {
  color: var(--color-success);
  background: rgba(40, 167, 69, 0.1);
  border-color: var(--color-success);
  transform: scale(1.02);
}

.contact-info p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

/* ========== TARJETAS WHATSAPP ========== */
.whatsapp-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.whatsapp-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.whatsapp-card:hover {
  background: linear-gradient(135deg, #e0f7e9, #f0fdf4);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: #25D366;
}

.icon {
  font-size: var(--font-size-2xl);
  margin: 0 var(--spacing-md);
  transition: transform var(--transition-base);
}

.whatsapp-card:hover .icon {
  transform: scale(1.1);
}

.whatsapp-icon {
  color: #25D366;
}

.action-icon {
  color: var(--color-primary);
}

.whatsapp-card a {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  text-align: center;
  transition: color var(--transition-fast);
}

.whatsapp-card a:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ========== BOTÓN FLOTANTE WHATSAPP ========== */
.whatsapp-float {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--spacing-sm);
  background: linear-gradient(135deg, #25D366, #1ebe57);
  color: var(--text-light);
  font-size: var(--font-size-base);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: 50px;
  text-decoration: none;
  box-shadow: var(--shadow-xl);
  transition: all var(--transition-base);
  white-space: nowrap;
  max-width: 300px;
  overflow: hidden;
  z-index: var(--z-fixed);
  animation: pulse 2s ease-in-out infinite;
  font-weight: 600;
}

.whatsapp-float:hover {
  background: linear-gradient(135deg, #1ebe57, #128c7e);
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 12px 24px rgba(37, 211, 102, 0.4);
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 8px 16px rgba(37, 211, 102, 0.3);
  }
  50% {
    box-shadow: 0 8px 24px rgba(37, 211, 102, 0.5);
  }
}

.whatsapp-float .whatsapp-icon {
  width: 20px; /* Tamaño del ícono */
  height: 20px; /* Tamaño del ícono */
}

.whatsapp-float span {
  display: none; /* Oculto por defecto */
}

.whatsapp-float:hover span {
  display: inline; /* Se muestra el texto en hover */
  transition: opacity 0.3s ease;
  opacity: 1; /* Asegura visibilidad */
}

/* ========== LÍMITE DE CARACTERES ========== */
.character-limit {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
  text-align: right;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Footer con ancho completo */
.character-limit {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  padding-left: 0;
  padding-right: 0;
}

.form-row {
  width: 100%;
  max-width: 100%;
}

.disclaimer-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.disclaimer-link:hover {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

/* ========== SPINNER ========== */
.spinner {
  display: none;
  margin: var(--spacing-xl) auto;
  width: 48px;
  height: 48px;
  border: 4px solid rgba(0, 123, 255, 0.1);
  border-radius: 50%;
  border-top-color: var(--color-primary);
  animation: spin 0.8s linear infinite;
}

.spinner[style*="display: block"] {
  display: block;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Logo */
.logo-icon {
  width: 48px;
  height: 48px;
  vertical-align: middle;
  margin-right: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: transform var(--transition-base);
}

.title-link {
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: transform var(--transition-base);
}

.title-link:hover {
  transform: scale(1.05);
}

.title-link:hover .logo-icon {
  transform: rotate(5deg) scale(1.1);
}

/* ========== SELECTOR DE IDIOMA ========== */
.language-selector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  position: sticky;
  bottom: 0;
  z-index: var(--z-sticky);
}

.language-selector::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 100%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border-top: var(--border-width) solid var(--border-color);
  z-index: -1;
}

.flag-button {
  font-size: var(--font-size-2xl);
  border: none;
  background: transparent;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
  position: relative;
}

.flag-button:hover {
  transform: scale(1.15);
  background: rgba(0, 123, 255, 0.1);
}

.flag-button.selected {
  background: rgba(0, 123, 255, 0.15);
  transform: scale(1.1);
}

.flag-button.selected::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 3px;
  background: var(--color-primary);
  border-radius: var(--border-radius-sm);
}

/* ========== TOGGLE MODO OSCURO ========== */
.theme-toggle {
  font-size: var(--font-size-xl);
  border: none;
  background: transparent;
  cursor: pointer;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-base);
  position: relative;
  margin-right: var(--spacing-sm);
}

.theme-toggle:hover {
  transform: scale(1.15) rotate(15deg);
  background: rgba(99, 102, 241, 0.1);
}

.theme-toggle:active {
  transform: scale(0.95) rotate(15deg);
}

.theme-icon {
  display: inline-block;
  transition: transform 0.3s ease;
}

[data-theme="dark"] .theme-icon {
  transform: rotate(180deg);
}

/* ========== MICROINTERACCIONES AVANZADAS ========== */

/* Ripple effect en botones principales */
.cta-button,
.pdf-button,
.open-pdf-button {
  position: relative;
  overflow: hidden;
}

.cta-button::after,
.pdf-button::after,
.open-pdf-button::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
  pointer-events: none;
}

.cta-button:active::after,
.pdf-button:active::after,
.open-pdf-button:active::after {
  width: 300px;
  height: 300px;
}

/* Input focus con borde animado */
.form-control {
  position: relative;
}

.form-control::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease, left 0.3s ease;
  transform: translateX(-50%);
  z-index: 1;
}

.form-control:focus::before {
  width: 100%;
  left: 0;
  transform: translateX(0);
}

/* Hover en cards con elevación mejorada */
.routine-item,
.whatsapp-card,
.payment-pack {
  transition: all var(--transition-base);
}

.routine-item:hover,
.whatsapp-card:hover,
.payment-pack:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* Loading state mejorado con pulso */
.spinner {
  position: relative;
}

.spinner::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 20px;
  margin: -10px 0 0 -10px;
  border: 2px solid var(--color-primary);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  opacity: 0.5;
}

.language-selector p {
  margin: 0;
  margin-right: 10px;
  font-size: 16px;
  color: #333;
}

/* ========== PACK DE PAGO ========== */
.payment-pack {
  max-width: 100%;
  padding: var(--spacing-lg);
  margin: var(--spacing-md) 0;
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-lg);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: all var(--transition-base);
}

.payment-pack:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.payment-pack .price {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  margin: var(--spacing-sm) 0;
  letter-spacing: -0.02em;
}

.payment-pack #titleSpan {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  display: block;
  margin-bottom: var(--spacing-sm);
}

/* ========== BANNER INFORMATIVO ========== */
.info-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-md);
  animation: slideDown 0.3s ease-out;
}

.info-banner-content {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--border-radius-md);
  font-size: 0.9rem;
  color: var(--text-primary);
  max-width: 100%;
  width: 100%;
  position: relative;
}

.info-banner-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.info-banner-text {
  flex: 1;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.example-link {
  background: none;
  border: none;
  padding: 0;
  margin: 0;
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  font-size: inherit;
  font-family: inherit;
  border-bottom: 1px solid transparent;
}

.example-link:hover {
  color: var(--color-primary-dark);
  border-bottom-color: var(--color-primary-dark);
  transform: translateY(-1px);
}

.example-link:active {
  transform: translateY(0);
}

/* Modo oscuro para example-link */
[data-theme="dark"] .example-link {
  color: var(--color-primary-light);
}

[data-theme="dark"] .example-link:hover {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.info-banner-close {
  background: none;
  border: none;
  font-size: 1.2rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.info-banner-close:hover {
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-primary);
}

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

.flash-message {
  width: 100%;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--text-light);
  text-align: center;
  font-size: var(--font-size-lg);
  font-weight: 600;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  animation: slideDown 0.3s ease-out;
  position: relative;
  overflow: hidden;
}

.flash-message::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  animation: shimmer 2s infinite;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shimmer {
  0% { left: -100%; }
  100% { left: 100%; }
}
/* Contenedor principal del input */
.input-group {
  position: relative;
  width: 100%;
}

/* Envoltorio para el input y el ícono */
.input-wrapper {
  position: relative;
  display: flex;
  align-items: center; /* Alineación vertical garantizada */
  width: 100%;
}

/* Estilo del input con ícono */
.input-wrapper .form-control {
  width: 100%;
  padding-right: 48px;
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  min-height: 48px;
  line-height: 1.5;
  box-sizing: border-box;
}

/* Estilo del ícono de información */
.input-icon {
  position: absolute;
  right: var(--spacing-sm);
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  cursor: pointer;
  background: var(--bg-tertiary);
  border: var(--border-width) solid var(--border-color);
  border-radius: 50%;
  color: var(--text-secondary);
  transition: all var(--transition-base);
  z-index: 1;
}

.input-icon svg {
  width: 14px;
  height: 14px;
  pointer-events: none;
  stroke-width: 2;
}

.input-icon:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--text-light);
  transform: translateY(-50%) scale(1.1);
  box-shadow: var(--shadow-sm);
}

.input-icon:active {
  transform: translateY(-50%) scale(0.95);
}

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

.input-icon:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  top: -45px;
  right: 0;
  background: var(--text-primary);
  color: var(--text-light);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  z-index: var(--z-tooltip);
  animation: fadeIn var(--transition-fast);
  pointer-events: none;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.routine-text {
  z-index: 99;
}

#statusMessage {
  padding: 1em;
  display: none;
}

.cta-message,
.status-message {
  font-weight: 600;
  color: var(--color-danger);
  text-align: center;
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-md);
  background: linear-gradient(135deg, #fee2e2, #fecaca);
  border-left: 4px solid var(--color-danger);
  box-shadow: var(--shadow-sm);
}

/* ========== ESTILOS PARA RUTINAS GUARDADAS Y PDF ========== */

/* Botón para abrir sección de PDF (colapsado) */
/* ========== BOTÓN ABRIR PDF ========== */
.open-pdf-button {
  width: 100%;
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.open-pdf-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, var(--color-primary-dark), #004085);
}

.open-pdf-button:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(0, 123, 255, 0.3);
}

.open-pdf-button .arrow-icon {
  font-size: 14px;
  transition: transform 0.3s ease;
}

.open-pdf-button:hover .arrow-icon {
  transform: translateY(2px);
}

/* ========== SECCIÓN RUTINAS GUARDADAS ========== */
.saved-routines-section {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, #f9f9f9 0%, #ffffff 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
  opacity: 1;
  transform: translateY(0);
}

.accordion-content {
  animation: slideDown 0.3s ease;
}

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

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--border-color);
  position: relative;
}

.close-accordion-button {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--bg-secondary);
  border: var(--border-width) solid var(--border-color);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  padding: 0;
  box-shadow: var(--shadow-sm);
}

.close-accordion-button:hover {
  background: var(--bg-tertiary);
  border-color: var(--color-primary);
  transform: scale(1.1) rotate(90deg);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.close-accordion-button:active {
  transform: scale(0.95) rotate(90deg);
}

.section-header {
  text-align: center;
  flex: 1;
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.saved-routines-section h2,
.saved-routines-section h3 {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.routine-counter {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.instructions-box {
  background: linear-gradient(135deg, rgba(0, 123, 255, 0.08) 0%, rgba(0, 123, 255, 0.03) 100%);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-md);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow-sm);
}

/* Modo oscuro para instructions-box */
[data-theme="dark"] .instructions-box {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15) 0%, rgba(139, 92, 246, 0.1) 100%);
  border-left-color: var(--color-primary);
}

.instructions-title {
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-base);
}

/* Modo oscuro para instructions-title */
[data-theme="dark"] .instructions-title {
  color: var(--color-primary-light);
}

.instructions-list {
  margin: 0;
  padding-left: var(--spacing-xl);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  line-height: 1.8;
}

/* Modo oscuro para instructions-list - mejorar contraste */
[data-theme="dark"] .instructions-list {
  color: var(--text-primary);
}

[data-theme="dark"] .instructions-list li {
  color: var(--text-primary);
}

.instructions-list li {
  margin-bottom: var(--spacing-sm);
  position: relative;
}

.instructions-list li::marker {
  color: var(--color-primary);
  font-weight: 600;
}

/* ========== LISTA DE RUTINAS ========== */
.routines-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.routine-item {
  background: var(--bg-primary);
  border: var(--border-width) solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 0;
  transition: all var(--transition-base);
  overflow: hidden;
}

.routine-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.routine-checkbox-label {
  display: flex;
  align-items: flex-start;
  padding: var(--spacing-lg);
  cursor: pointer;
  margin: 0;
  transition: background-color var(--transition-base);
  gap: var(--spacing-md);
}

.routine-checkbox-label:hover {
  background: linear-gradient(135deg, rgba(0, 123, 255, 0.05), rgba(0, 123, 255, 0.02));
}

.routine-checkbox {
  margin-top: var(--spacing-xs);
  width: 20px;
  height: 20px;
  cursor: pointer;
  flex-shrink: 0;
  accent-color: var(--color-primary);
  transition: transform var(--transition-fast);
}

.routine-checkbox:hover {
  transform: scale(1.1);
}

.routine-preview {
  flex: 1;
  min-width: 0;
}

.routine-date {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.routine-preview-text {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  line-height: 1.5;
  word-wrap: break-word;
  font-weight: 500;
}

.routine-checkbox:checked + .routine-preview .routine-preview-text {
  color: var(--color-primary);
  font-weight: 600;
}

.routine-checkbox:checked + .routine-preview .routine-date {
  color: var(--color-primary-dark);
  font-weight: 600;
}

.routine-item:has(.routine-checkbox:checked) {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, rgba(0, 123, 255, 0.08), rgba(0, 123, 255, 0.03));
  box-shadow: var(--shadow-sm);
}

.pdf-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.pdf-button {
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.pdf-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
  background: linear-gradient(135deg, var(--color-primary-dark), #004085);
}

.pdf-button:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.pdf-button:disabled {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
  opacity: 0.6;
  transform: none;
}

.pdf-icon {
  font-size: 20px;
}

.pdf-text {
  font-size: 16px;
}

.pdf-hint {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  text-align: center;
  margin-top: var(--spacing-xs);
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 768px) {
  body {
    padding: var(--spacing-sm);
  }

  .container {
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
  }

  h1 {
    font-size: var(--font-size-2xl);
  }

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

  .form-control {
    font-size: 16px; /* Evita zoom en iOS */
  }

  .whatsapp-float {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    max-width: 250px;
  }

  .whatsapp-float span {
    display: none;
  }

  .language-selector {
    padding: var(--spacing-md);
  }

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

@media (max-width: 480px) {
  .container {
    max-width: 100%;
    padding: var(--spacing-md);
  }

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

  .cta-button {
    min-height: 52px;
    font-size: var(--font-size-base);
  }

  .open-pdf-button,
  .pdf-button {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }

  .saved-routines-section {
    padding: var(--spacing-md);
  }
}

/* ========== MEJORAS DE ACCESIBILIDAD ========== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible para mejor accesibilidad */
*:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* ========== MEJORAS DE RENDIMIENTO ========== */
.container,
.form-control,
.cta-button,
.open-pdf-button,
.pdf-button {
  will-change: transform;
}

/* ========== PRINT STYLES ========== */
@media print {
  .whatsapp-float,
  .language-selector,
  .open-pdf-button,
  .close-accordion-button {
    display: none !important;
  }

  .container {
    box-shadow: none;
    border: 1px solid var(--border-color);
  }
}