:root {
  /* Colores primarios */
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-200: #bfdbfe;
  --primary-300: #93c5fd;
  --primary-400: #60a5fa;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-700: #1d4ed8;
  --primary-800: #1e40af;
  --primary-900: #1e3a8a;

  /* Colores neutros */
  --white: #ffffff;
  --black: #000000;

  /* Gradientes */
  --gradient-primary: linear-gradient(
    135deg,
    var(--primary-500) 0%,
    var(--primary-700) 100%
  );
  --gradient-secondary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);

  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Bordes */
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 20px;
  --border-radius-2xl: 24px;
  --border-radius-full: 50%;

  /* Transiciones */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Espaciados */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Tipografía */
  --font-family: "Inter", sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
  --z-preloader: 9999;
}

/* ===== ESTILOS BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  line-height: 1.6;
  font-weight: var(--font-weight-normal);
  overflow-x: hidden;
}

/* ===== TIPOGRAFÍA ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: 3.5rem;
}
h2 {
  font-size: 2.5rem;
}
h3 {
  font-size: 2rem;
}
h4 {
  font-size: 1.5rem;
}
h5 {
  font-size: 1.25rem;
}
h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--space-md);
}

/* ===== UTILIDADES ===== */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ===== BOTONES ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.7s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
}

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

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

.btn-block {
  width: 100%;
}

/* ===== ANIMACIONES BASE ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

/* ===== PRELOADER ===== */
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: var(--z-preloader);
}

.preloader-content {
  text-align: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon {
  font-size: 1.5rem;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: var(--font-weight-black);
}

.loading-bar {
  width: 200px;
  height: 4px;
  border-radius: 2px;
  overflow: hidden;
  margin: var(--space-lg) auto;
}

.loading-progress {
  height: 100%;
  border-radius: 2px;
  animation: loading 2s ease-in-out infinite;
}

@keyframes loading {
  0% {
    transform: translateX(-100%);
  }
  50% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(100%);
  }
}

/* ===== SWITCHER DE TEMA  ===== */
.theme-switcher-wrapper {
  position: relative;
  margin-right: 1rem;
}

.theme-switch {
  display: none;
}

.theme-switch-label {
  display: flex;
  align-items: center;
  cursor: pointer;
  position: relative;
  padding: 0.25rem;
  border-radius: var(--border-radius-lg);
  transition: var(--transition);
}

.theme-switch-label:hover {
  background: var(--bg-secondary);
}

.theme-switch-track {
  width: 60px;
  height: 32px;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  border-radius: 50px;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.15);
}

.theme-switch-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 26px;
  height: 26px;
  background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
  border-radius: 50%;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15), 0 1px 3px rgba(0, 0, 0, 0.1);
}

.sun-icon,
.moon-icon {
  position: absolute;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 0.75rem;
}

.sun-icon {
  color: #f59e0b;
  opacity: 1;
  transform: scale(1);
}

.moon-icon {
  color: #1e40af;
  opacity: 0;
  transform: scale(0.5);
}

.theme-switch:checked + .theme-switch-label .theme-switch-thumb {
  transform: translateX(28px);
}

.theme-switch:checked + .theme-switch-label .sun-icon {
  opacity: 0;
  transform: scale(0.5);
}

.theme-switch:checked + .theme-switch-label .moon-icon {
  opacity: 1;
  transform: scale(1);
}

.theme-switch-tooltip {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 0.5rem 0.75rem;
  border-radius: var(--border-radius);
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
}

.theme-switch-tooltip::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 4px solid var(--text-primary);
}

.theme-switch-label:hover .theme-switch-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(4px);
}

/* ===== NAVEGACIÓN  ===== */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-right: 1rem;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--border-radius-lg);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  font-size: 0.875rem;
  border: 2px solid transparent;
}

.btn-nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.2),
    transparent
  );
  transition: left 0.6s ease;
}

.btn-nav:hover::before {
  left: 100%;
}

.btn-nav i {
  font-size: 0.875rem;
  transition: transform 0.3s ease;
}

.btn-nav:hover i {
  transform: scale(1.1);
}

.btn-login {
  background: transparent;
  color: var(--text-secondary);
  border: 2px solid var(--border-primary);
}

.btn-login:hover {
  color: var(--primary-600);
  border-color: var(--primary-500);
  background: rgba(59, 130, 246, 0.05);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.15);
}

.btn-demo {
  background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}

.btn-demo:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  background: linear-gradient(135deg, #2563eb 0%, #1e40af 100%);
}

@keyframes pulse-demo {
  0%,
  100% {
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35),
      0 0 0 0 rgba(59, 130, 246, 0.4);
  }
  50% {
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35),
      0 0 0 8px rgba(59, 130, 246, 0);
  }
}

.btn-demo {
  animation: pulse-demo 3s infinite;
}

.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem 0;
}

.btn-nav.mobile {
  justify-content: center;
  text-align: center;
  width: 100%;
}

@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: 2.5rem;
  }
  h2 {
    font-size: 2rem;
  }
  h3 {
    font-size: 1.75rem;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .nav-actions {
    display: none;
  }

  .theme-switcher-wrapper {
    margin-right: 0.5rem;
  }

  .btn-nav {
    padding: 0.75rem 1rem;
  }

  .mobile-nav-actions {
    width: 100%;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }
  h2 {
    font-size: 1.75rem;
  }

  .btn-nav span {
    display: none;
  }

  .btn-nav i {
    margin: 0;
  }

  .theme-switch-track {
    width: 50px;
    height: 28px;
  }

  .theme-switch-thumb {
    width: 22px;
    height: 22px;
  }

  .theme-switch:checked + .theme-switch-label .theme-switch-thumb {
    transform: translateX(22px);
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 0.75rem;
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 0.875rem;
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  font-size: 0.8125rem;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-login {
  min-width: auto;
}

.btn-trial {
  min-width: auto;
  font-size: 0.75rem;
}

.btn-demo {
  min-width: auto;
  font-size: 0.8125rem;
}

@media (max-width: 768px) {
  .nav-actions {
    gap: 0.375rem;
  }

  .btn-nav {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
  }

  .btn-nav span {
    display: none;
  }

  .btn-nav i {
    margin: 0;
    font-size: 0.875rem;
  }
}

#preloader {
  background: var(--bg-primary);
  color: var(--text-primary);
}

.preloader-content {
  color: var(--text-primary);
}

.preloader-content .text-muted {
  color: var(--text-muted) !important;
}

.preloader-logo {
  width: 120px;
  height: auto;
  margin-bottom: 2rem;
}

.logo-container {
  display: none;
}

:root {
  /* Espaciados aumentados */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
}

.section-padding {
  padding: var(--space-3xl) 0;
}