/* Variables y estilos base */
:root {
  --primary-color: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary-color: #10b981;
  --danger-color: #ef4444;
  --text-color: #1f2937;
  --text-light: #6b7280;
  --bg-color: #f9fafb;
  --card-bg: #ffffff;
  --border-color: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --radius-sm: 0.25rem;
  --radius: 0.5rem;
  --radius-lg: 0.75rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
}

/* Estilos del Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background-color: var(--card-bg);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

nav {
  display: none;
}

.auth-buttons {
  display: flex;
  gap: 0.5rem;
}

.auth-btn {
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

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

/* Estilos del Main */
main {
  margin-top: 70px;
  padding: 1rem;
}

section {
  padding: 2rem 0;
}

/* Hero Section */
#hero {
  text-align: center;
  padding: 3rem 1rem;
}

.hero-content {
  max-width: 600px;
  margin: 0 auto;
}

.title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.subtitle {
  color: var(--text-light);
  margin-bottom: 2rem;
  font-size: 1.1rem;
}

.cta-button {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 2rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

.cta-button:hover {
  background-color: var(--primary-dark);
}

/* Crypto Section */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.section-subtitle {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 1rem;
  text-align: center;
}

.crypto-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

/* Estilos para las tarjetas de criptomonedas */
.crypto-card {
    background-color: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 3px solid transparent;
}

.crypto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Colores de borde para cada cripto */
.crypto-card.btc { border-top-color: #f7931a; }
.crypto-card.eth { border-top-color: #627eea; }
.crypto-card.sol { border-top-color: #00ffa3; }
.crypto-card.usdc { border-top-color: #2775ca; }
.crypto-card.usdt { border-top-color: #26a17b; }

/* Estilos para el logo */
.crypto-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--bg-color);
    overflow: hidden;
}

.crypto-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

/* Estilos para la información de precios y estadísticas */
.crypto-price {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 1rem 0;
}

.crypto-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.crypto-change {
    font-size: 0.9rem;
    color: var(--secondary-color);
}

.crypto-change.negative {
    color: var(--danger-color);
}

.crypto-volume {
    font-size: 0.9rem;
    color: var(--text-light);
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
}

/* Diseño responsive */
@media (max-width: 768px) {
    .crypto-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
    
    .crypto-volume {
        align-self: flex-end;
    }
}

.crypto-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.crypto-icon {
  font-size: 1.5rem;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--bg-color);
  border-radius: 50%;
}

.crypto-name {
  font-weight: 600;
}

.crypto-symbol {
  color: var(--text-light);
  font-size: 0.875rem;
}

.crypto-price {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.crypto-change {
  margin-bottom: 1.5rem;
  color: var(--secondary-color);
}

.crypto-change.negative {
  color: var(--danger-color);
}

.buy-btn {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s;
}

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

/* Invest Section */
.invest-content {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
}

.invest-message {
  color: var(--text-light);
  margin-bottom: 2rem;
}

.login-prompt {
  background-color: var(--bg-color);
  padding: 1.5rem;
  border-radius: var(--radius);
  margin-top: 2rem;
}

/* Footer */
.main-footer {
  background-color: var(--card-bg);
  padding: 2rem 1rem;
  border-top: 1px solid var(--border-color);
}

.footer-warning, .footer-restrictions {
  margin-bottom: 2rem;
}

.footer-warning h3, .footer-restrictions h3 {
  margin-bottom: 1rem;
  color: var(--danger-color);
}

.footer-restrictions ul {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.simple-footer {
  text-align: center;
  padding: 1rem;
  color: var(--text-light);
  font-size: 0.875rem;
  border-top: 1px solid var(--border-color);
}

/* Modal de Registro */
.register-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.register-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.register-container {
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  width: 95%;
  max-width: 450px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2rem;
  position: relative;
  box-shadow: var(--shadow-md);
}

.close-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-light);
}

.register-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 1rem;
}

.input-combined span {
  display: block;
  font-size: 0.75rem;
  color: var(--text-light);
  margin-top: 0.25rem;
}

.terms-group {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.terms-group label {
  font-size: 0.875rem;
  color: var(--text-light);
}

.terms-group a {
  color: var(--primary-color);
  text-decoration: none;
}

.register-submit {
  width: 100%;
  padding: 0.75rem;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

.register-submit:hover {
  background-color: var(--primary-dark);
}

.social-auth {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-light);
  font-size: 0.875rem;
}

.social-auth::before,
.social-auth::after {
  content: "";
  flex: 1;
  height: 1px;
  background-color: var(--border-color);
}

.social-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.social-btn {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.25rem;
}

.telegram {
  color: #0088cc;
}

.gmail {
  color: #db4437;
}

.form-footer {
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-light);
}

.form-footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

/* Modal de Verificación */
.verification-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.verification-modal.active {
  opacity: 1;
  pointer-events: all;
}

.verification-container {
  background-color: var(--card-bg);
  border-radius: var(--radius-lg);
  width: 95%;
  max-width: 400px;
  padding: 2rem;
  position: relative;
  box-shadow: var(--shadow-md);
}

.verification-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-align: center;
}

.verification-message {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  text-align: center;
}

.verification-code {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.verification-code input {
  width: 3rem;
  height: 3.5rem;
  text-align: center;
  font-size: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.verification-actions {
  display: flex;
  justify-content: space-between;
}

.verification-btn {
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
}

.verification-btn.secondary {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

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

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

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

/* Media Queries para Desktop */
@media (min-width: 768px) {
  header {
    padding: 1rem 2rem;
  }
  
  nav {
    display: flex;
    gap: 1.5rem;
  }
  
  .nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
  }
  
  .nav-link:hover, .nav-link.active {
    color: var(--primary-color);
  }
  
  main {
    margin-top: 80px;
    padding: 1rem 2rem;
  }
  
  .title {
    font-size: 2.5rem;
  }
  
  .crypto-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  #buy .crypto-grid:first-of-type {
    grid-template-columns: repeat(2, 1fr);
    max-width: 700px;
    margin: 0 auto;
  }
  
  #buy .crypto-grid:last-of-type {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .main-footer {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    padding: 2rem;
  }
}

@media (min-width: 1024px) {
  .hero-content {
    padding: 2rem;
  }
  
  .title {
    font-size: 3rem;
  }
}

/* Estilos para las tarjetas de criptomonedas con logos */
.crypto-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: var(--bg-color);
    overflow: hidden;
}

.crypto-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

/* Colores de fondo específicos para cada cripto */
.crypto-card.btc {
    border-top: 3px solid #f7931a;
}

.crypto-card.eth {
    border-top: 3px solid #627eea;
}

.crypto-card.sol {
    border-top: 3px solid #00ffa3;
}

.crypto-card.usdc {
    border-top: 3px solid #2775ca;
}

.crypto-card.usdt {
    border-top: 3px solid #26a17b;
}

/* Efecto hover más pronunciado */
.crypto-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}