/* Base Styles & Variables */
:root {
  --color-primary: #FCD116;     /* Amarillo bandera Colombia */
  --color-secondary: #003893;   /* Azul bandera Colombia */
  --color-accent: #CE1126;      /* Rojo bandera Colombia */
  --color-light: #f5f5f5;
  --color-dark: #212121;
  --color-gray: #757575;
  --color-white: #ffffff;
  --font-primary: 'Raleway', sans-serif;
  --font-secondary: 'Lato', sans-serif;
  --shadow-soft: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-medium: 0 6px 16px rgba(0,0,0,0.12);
  --radius: 8px;
  --transition: all 0.3s ease;
}

/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-dark);
  line-height: 1.6;
  background-color: var(--color-light);
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  margin-bottom: 1rem;
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 2.8rem;
}

h2 {
  font-size: 2.2rem;
}

h3 {
  font-size: 1.8rem;
}

h4 {
  font-size: 1.4rem;
}

p {
  margin-bottom: 1.5rem;
}

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

a:hover {
  color: var(--color-accent);
}

img, svg {
  max-width: 100%;
  height: auto;
}

ul {
  list-style: none;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

section {
  padding: 5rem 0;
}

/* Utilidades */
.text-center {
  text-align: center;
}

.btn {
  display: inline-block;
  background: var(--color-secondary);
  color: var(--color-white);
  padding: 0.8rem 2rem;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  text-transform: uppercase;
  letter-spacing: 1px;
  box-shadow: var(--shadow-soft);
}

.btn:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-medium);
}

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

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

.section-title {
  position: relative;
  margin-bottom: 3rem;
}

.section-title h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}

.section-title h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 50%;
  height: 3px;
  background: var(--color-primary);
  transform: translateX(50%);
}

/* Header & Navegación */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  transition: var(--transition);
}

.header.scrolled {
  padding: 0.5rem 0;
  background: rgba(255, 255, 255, 0.98);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-dark);
}

.logo svg {
  margin-right: 10px;
  height: 40px;
  width: 40px;
}

.nav-menu {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
}

.nav-item {
  margin: 0 1rem;
}

.nav-link {
  position: relative;
  font-weight: 600;
  font-size: 1rem;
  padding: 0.5rem;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.toggle-menu {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-dark);
  cursor: pointer;
  padding: 0.5rem;
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(3, 56, 147, 0.9) 0%, rgba(206, 17, 38, 0.8) 100%);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
  margin-top: 0;
}

.hero::before {
  content: '';
  position: absolute;
  width: 150%;
  height: 150%;
  top: -25%;
  left: -25%;
  background: 
    radial-gradient(circle at 20% 35%, rgba(252, 209, 22, 0.4) 0%, transparent 50%),
    radial-gradient(circle at 75% 65%, rgba(206, 17, 38, 0.3) 0%, transparent 50%);
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  font-weight: 800;
}

.hero-text {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero .btn {
  margin: 0.5rem;
}

/* Features Section */
.features {
  background-color: var(--color-white);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-medium);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.feature-icon svg {
  width: 60px;
  height: 60px;
  color: var(--color-secondary);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  font-weight: 700;
  color: var(--color-dark);
}

/* How it Works */
.how-it-works {
  background-color: var(--color-light);
}

.steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 3rem 0;
}

.step {
  flex: 1;
  min-width: 250px;
  max-width: 350px;
  margin: 1rem;
  text-align: center;
  padding: 2rem;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  position: relative;
}

.step-number {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 50px;
  height: 50px;
  background: var(--color-secondary);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto 1.5rem;
}

.step:nth-child(2) .step-number {
  background: var(--color-primary);
  color: var(--color-dark);
}

.step:nth-child(3) .step-number {
  background: var(--color-accent);
}

.step h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* Privacy Section */
.privacy {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
  color: var(--color-white);
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.privacy-card {
  padding: 1.5rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(5px);
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
}

.privacy-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.15);
}

.privacy-icon {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
}

.privacy-icon svg {
  width: 40px;
  height: 40px;
  margin-right: 1rem;
}

.privacy-title {
  margin-bottom: 1rem;
  font-size: 1.4rem;
  font-weight: 600;
}

/* FAQ Section */
.faq {
  background-color: var(--color-white);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.faq-item {
  background: var(--color-light);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-medium);
}

.faq-question {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-secondary);
}

.faq-answer {
  color: var(--color-gray);
  font-size: 1rem;
}

/* CTA Section */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  text-align: center;
}

.cta-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.cta h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.cta p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

/* Footer */
.footer {
  background-color: var(--color-dark);
  color: var(--color-light);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-about {
  grid-column: 1 / 3;
}

.footer-logo {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer-logo svg {
  margin-right: 10px;
  height: 28px;
  width: 28px;
}

.footer-title {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
  font-weight: 600;
}

.footer-links ul {
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.7rem;
}

.footer-links a {
  color: var(--color-light);
  opacity: 0.8;
  transition: var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--color-primary);
}

.copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.9rem;
  color: var(--color-gray);
}

/* Responsividad */
@media (max-width: 992px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 3rem;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  h3 {
    font-size: 1.5rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .hero-text {
    font-size: 1.1rem;
  }
  
  .toggle-menu {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 80%;
    height: calc(100vh - 70px);
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem;
    transition: var(--transition);
    box-shadow: 5px 0 15px rgba(0,0,0,0.1);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-list {
    flex-direction: column;
    width: 100%;
  }
  
  .nav-item {
    margin: 1rem 0;
  }
  
  .footer-about {
    grid-column: 1 / -1;
  }
}

@media (max-width: 576px) {
  .container {
    width: 95%;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.6rem;
  }
  
  .hero-title {
    font-size: 2.2rem;
  }
  
  .features-grid,
  .privacy-grid {
    grid-template-columns: 1fr;
  }
  
  .steps {
    flex-direction: column;
    align-items: center;
  }
  
  .step {
    margin: 1rem 0;
  }
}