/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* Colors - Paleta Especificada */
  --primary-color: #3b92a2;
  --secondary-color: #8b61c2;
  --accent-color: #4d0d9f;
  --gradient-primary: linear-gradient(135deg, #3b92a2 0%, #8b61c2 50%, #4d0d9f 100%);
  --gradient-secondary: linear-gradient(45deg, #3b92a2, #8b61c2, #4d0d9f, #3b92a2);
  --gradient-accent: linear-gradient(90deg, #8b61c2 0%, #4d0d9f 100%);
  
  /* Neutral Colors */
  --white: #ffffff;
  --light-gray: #f8f9fa;
  --gray-100: #f1f3f4;
  --gray-200: #e8eaed;
  --gray-300: #dadce0;
  --gray-400: #bdc1c6;
  --gray-500: #9aa0a6;
  --gray-600: #80868b;
  --gray-700: #5f6368;
  --gray-800: #3c4043;
  --gray-900: #202124;
  --dark-gray: #2d3748;
  --black: #1a202c;
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */
  --font-size-7xl: 4.5rem;    /* 72px */
  
  /* Font Weights */
  --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;
  
  /* Line Heights */
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing System (8px base) */
  --spacing-0: 0;
  --spacing-1: 0.25rem;  /* 4px */
  --spacing-2: 0.5rem;   /* 8px */
  --spacing-3: 0.75rem;  /* 12px */
  --spacing-4: 1rem;     /* 16px */
  --spacing-5: 1.25rem;  /* 20px */
  --spacing-6: 1.5rem;   /* 24px */
  --spacing-8: 2rem;     /* 32px */
  --spacing-10: 2.5rem;  /* 40px */
  --spacing-12: 3rem;    /* 48px */
  --spacing-16: 4rem;    /* 64px */
  --spacing-20: 5rem;    /* 80px */
  --spacing-24: 6rem;    /* 96px */
  --spacing-32: 8rem;    /* 128px */
  
  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.125rem;   /* 2px */
  --radius-base: 0.25rem;  /* 4px */
  --radius-md: 0.375rem;   /* 6px */
  --radius-lg: 0.5rem;     /* 8px */
  --radius-xl: 0.75rem;    /* 12px */
  --radius-2xl: 1rem;      /* 16px */
  --radius-3xl: 1.5rem;    /* 24px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --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);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
  
  /* Colored Shadows */
  --shadow-primary: 0 10px 25px -5px rgba(59, 146, 162, 0.3);
  --shadow-secondary: 0 10px 25px -5px rgba(139, 97, 194, 0.3);
  --shadow-accent: 0 10px 25px -5px rgba(77, 13, 159, 0.3);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  --transition-slower: 0.75s ease-in-out;
  
  /* Cubic Bezier Curves */
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-toast: 1080;
  
  /* Container Sizes */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* Breakpoints */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  line-height: var(--line-height-normal);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--gray-800);
  background-color: var(--white);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 1;
  visibility: visible;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-content {
  text-align: center;
  animation: fadeInUp 0.8s var(--ease-out);
}

.loading-logo img {
  height: 80px;
  width: auto;
  margin-bottom: var(--spacing-6);
  animation: pulse 2s infinite;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray-200);
  border-top: 3px solid var(--primary-color);
  border-radius: var(--radius-full);
  margin: 0 auto var(--spacing-4);
  animation: spin 1s linear infinite;
}

.loading-text {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  font-weight: var(--font-weight-medium);
}



/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-4);
  color: var(--gray-900);
}

h1 { 
  font-size: var(--font-size-5xl); 
  font-weight: var(--font-weight-extrabold);
}
h2 { 
  font-size: var(--font-size-4xl); 
  font-weight: var(--font-weight-bold);
}
h3 { 
  font-size: var(--font-size-3xl); 
  font-weight: var(--font-weight-bold);
}
h4 { 
  font-size: var(--font-size-2xl); 
  font-weight: var(--font-weight-semibold);
}
h5 { 
  font-size: var(--font-size-xl); 
  font-weight: var(--font-weight-semibold);
}
h6 { 
  font-size: var(--font-size-lg); 
  font-weight: var(--font-weight-medium);
}

p {
  margin-bottom: var(--spacing-4);
  line-height: var(--line-height-relaxed);
  color: var(--gray-700);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ===== UTILITY CLASSES ===== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-6);
}

.section-padding {
  padding: var(--spacing-10) 0;
}

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.hidden { 
  display: none !important; 
}

.visible { 
  display: block !important; 
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Gradient Text */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
  outline: none;
}

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

.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 var(--transition-slow);
}

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

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

.btn-xl {
  padding: var(--spacing-5) var(--spacing-10);
  font-size: var(--font-size-xl);
}

/* Button Variants */
.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-primary);
}

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

.btn-secondary {
  background: var(--white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: var(--shadow-sm);
}

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

.btn-accent {
  background: var(--gradient-accent);
  color: var(--white);
  box-shadow: var(--shadow-accent);
}

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

.btn-ghost {
  background: transparent;
  color: var(--primary-color);
  border: 1px solid transparent;
}

.btn-ghost:hover {
  background: rgba(59, 146, 162, 0.1);
  border-color: var(--primary-color);
}

/* ===== SCROLL REVEAL ===== */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

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

@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    transform: translate3d(0, 0, 0);
  }
  40%, 43% {
    animation-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
    transform: translate3d(0, -30px, 0);
  }
  70% {
    animation-timing-function: cubic-bezier(0.755, 0.05, 0.855, 0.06);
    transform: translate3d(0, -15px, 0);
  }
  90% {
    transform: translate3d(0, -4px, 0);
  }
}

/* Pulse Animation for CTA buttons */
.pulse-animation {
  animation: pulse 2s infinite;
}

.pulse-animation:hover {
  animation: none;
}

/* ===== FOCUS STYLES ===== */

*:focus,
button:focus,
a:focus,
input:focus,
textarea:focus,
select:focus {
  outline: none;
  box-shadow: none;
}

/* ===== SELECTION STYLES ===== */
::selection {
  background: var(--primary-color);
  color: var(--white);
}

::-moz-selection {
  background: var(--primary-color);
  color: var(--white);
}

/* ===== SCROLLBAR STYLES ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
  background: var(--gray-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* ===== PRINT STYLES ===== */
@media print {
  .loading-screen,
  .nav-toggle,
  .back-to-top,
  .modal-overlay {
    display: none !important;
  }
  
  body {
    background: white !important;
    color: black !important;
  }
  
  .btn {
    border: 1px solid black !important;
    background: white !important;
    color: black !important;
  }
}