/* ==========================================================================
   CardsBox Landing - Custom Styles
   Variables CSS para personalización de colores y modo oscuro
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables - Modo Claro (Default)
   -------------------------------------------------------------------------- */
:root {
  /* Colores Primarios */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  /* Colores Accent (Ámbar/Naranja) */
  --color-accent-50: #fffbeb;
  --color-accent-100: #fef3c7;
  --color-accent-200: #fde68a;
  --color-accent-300: #fcd34d;
  --color-accent-400: #fbbf24;
  --color-accent-500: #f59e0b;
  --color-accent-600: #d97706;
  --color-accent-700: #b45309;
  --color-accent-800: #92400e;
  --color-accent-900: #78350f;

  /* Colores de Éxito (Verde) */
  --color-success-50: #ecfdf5;
  --color-success-100: #d1fae5;
  --color-success-200: #a7f3d0;
  --color-success-300: #6ee7b7;
  --color-success-400: #34d399;
  --color-success-500: #10b981;
  --color-success-600: #059669;
  --color-success-700: #047857;

  /* Colores de Error (Rojo) */
  --color-error-50: #fef2f2;
  --color-error-100: #fee2e2;
  --color-error-200: #fecaca;
  --color-error-300: #fca5a5;
  --color-error-400: #f87171;
  --color-error-500: #ef4444;
  --color-error-600: #dc2626;
  --color-error-700: #b91c1c;

  /* Grises Neutros */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Colores de Fondo */
  --bg-primary: #ffffff;
  --bg-secondary: var(--color-gray-50);
  --bg-tertiary: var(--color-gray-100);
  --bg-gradient-start: var(--color-primary-600);
  --bg-gradient-end: var(--color-primary-700);

  /* Colores de Texto */
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-tertiary: var(--color-gray-500);
  --text-inverse: #ffffff;

  /* Bordes */
  --border-color: var(--color-gray-200);
  --border-color-light: var(--color-gray-100);

  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Transiciones */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;
  --transition-slow: 300ms ease;

  /* Espaciado base */
  --spacing-section: 5rem;
  --container-max: 1280px;
  --header-height: 4rem;
}

/* --------------------------------------------------------------------------
   CSS Variables - Modo Oscuro
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
  /* Colores de Fondo */
  --bg-primary: var(--color-gray-900);
  --bg-secondary: var(--color-gray-800);
  --bg-tertiary: var(--color-gray-700);
  --bg-gradient-start: var(--color-gray-800);
  --bg-gradient-end: var(--color-gray-900);

  /* Colores de Texto */
  --text-primary: var(--color-gray-100);
  --text-secondary: var(--color-gray-300);
  --text-tertiary: var(--color-gray-400);

  /* Bordes */
  --border-color: var(--color-gray-700);
  --border-color-light: var(--color-gray-800);

  /* Sombras más sutiles en modo oscuro */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5), 0 8px 10px -6px rgb(0 0 0 / 0.4);
}

/* --------------------------------------------------------------------------
   Estilos Base
   -------------------------------------------------------------------------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* --------------------------------------------------------------------------
   Utilidades Custom
   -------------------------------------------------------------------------- */

/* Gradientes de texto */
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-accent {
  background: linear-gradient(135deg, var(--color-accent-500), var(--color-accent-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Fondos con gradiente */
.bg-gradient-primary {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
}

.bg-gradient-accent {
  background: linear-gradient(135deg, var(--color-accent-500), var(--color-accent-600));
}

.bg-gradient-dark {
  background: linear-gradient(135deg, var(--color-gray-800), var(--color-gray-900));
}

/* Glassmorphism */
.glass {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .glass {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Animaciones */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse-slow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

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

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-pulse-slow {
  animation: pulse-slow 2s ease-in-out infinite;
}

.animate-slide-up {
  animation: slide-up 0.6s ease-out forwards;
}

.animate-fade-in {
  animation: fade-in 0.4s ease-out forwards;
}

/* Delay para animaciones escalonadas */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Componentes
   -------------------------------------------------------------------------- */

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: 0.5rem;
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent-500), var(--color-accent-600));
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  filter: brightness(1.1);
}

.btn-secondary {
  background: white;
  color: var(--color-primary-700);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .btn-secondary {
  background: var(--color-gray-700);
  color: white;
}

.btn-outline {
  background: transparent;
  border: 2px solid white;
  color: white;
}

.btn-outline:hover {
  background: white;
  color: var(--color-primary-700);
}

.btn-whatsapp {
  background: #25D366;
  color: white;
}

.btn-whatsapp:hover {
  background: #128C7E;
  transform: translateY(-2px);
}

/* Cards */
.card {
  background: var(--bg-primary);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--border-color-light);
}

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

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-primary {
  background: var(--color-primary-100);
  color: var(--color-primary-700);
}

.badge-accent {
  background: var(--color-accent-100);
  color: var(--color-accent-700);
}

.badge-success {
  background: var(--color-success-100);
  color: var(--color-success-700);
}

[data-theme="dark"] .badge-primary {
  background: var(--color-primary-900);
  color: var(--color-primary-300);
}

[data-theme="dark"] .badge-accent {
  background: var(--color-accent-900);
  color: var(--color-accent-300);
}

[data-theme="dark"] .badge-success {
  background: var(--color-success-900);
  color: var(--color-success-300);
}

/* FAQ Accordion */
.faq-item {
  border-bottom: 1px solid var(--border-color);
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  background: transparent;
  border: none;
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--color-primary-600);
}

.faq-icon {
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding-bottom: 1.25rem;
}

/* Testimonial Cards */
.testimonial-card {
  background: var(--bg-primary);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color-light);
}

/* Calculator */
.calculator-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  border: 2px solid var(--border-color);
  background: var(--bg-primary);
  color: var(--text-primary);
  font-size: 1rem;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.calculator-select:focus {
  outline: none;
  border-color: var(--color-primary-500);
}

.calculator-result {
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
  color: white;
  padding: 1.5rem;
  border-radius: 1rem;
  text-align: center;
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1rem;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background: var(--color-primary-700);
  padding: 1rem;
  box-shadow: var(--shadow-lg);
}

.mobile-menu.active {
  display: block;
}

@media (min-width: 768px) {
  .mobile-menu {
    display: none !important;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  background: linear-gradient(135deg, var(--color-gray-800), var(--color-gray-900));
  color: white;
  padding: 4rem 0 2rem;
}

.footer a {
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: white;
}

/* --------------------------------------------------------------------------
   Theme Toggle
   -------------------------------------------------------------------------- */
.theme-toggle {
  position: relative;
  width: 3rem;
  height: 1.5rem;
  background: var(--color-gray-600);
  border-radius: 9999px;
  cursor: pointer;
  transition: background var(--transition-normal);
}

.theme-toggle::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1.25rem;
  height: 1.25rem;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .theme-toggle {
  background: var(--color-primary-600);
}

[data-theme="dark"] .theme-toggle::after {
  transform: translateX(1.5rem);
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 640px) {
  :root {
    --spacing-section: 3rem;
    --header-height: 3.5rem;
  }

  .btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
  }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
  .header,
  .footer,
  .whatsapp-float,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   Focus Styles for Accessibility
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Selection
   -------------------------------------------------------------------------- */
::selection {
  background: var(--color-primary-200);
  color: var(--color-primary-900);
}

[data-theme="dark"] ::selection {
  background: var(--color-primary-700);
  color: white;
}