@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

:root {
  --primary-color: #3a0ca3;
  --secondary-color: #4361ee;
  --accent-color: #4cc9f0;
  --background-color: #f8f9fa;
  --text-color: #2b2d42;
  --card-background: #ffffff;
  --card-border: #e0e1e6;
  --header-text: #ffffff;
  --shadow-color: rgba(67, 97, 238, 0.15);
  --hover-shadow: rgba(67, 97, 238, 0.3);
  --positive-color: #4caf50;
  --negative-color: #f44336;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--background-color);
  color: var(--text-color);
  font-family: 'Poppins', sans-serif;
  line-height: 1.6;
  transition: background-color 0.3s ease;
}

.Header-main {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: var(--header-text);
  padding: 20px 5%;
  box-shadow: 0 4px 6px var(--shadow-color);
}

.Header-title {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  background: linear-gradient(45deg, #fff, var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shimmer 2s infinite linear;
}

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

.Header-main .Header-encabezado img {
  max-width: 180px;
  height: auto;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.Header a {
  text-decoration: none;
  color: var(--header-text);
  font-weight: 500;
  transition: all 0.3s ease;
  padding: 8px 16px;
  border-radius: 20px;
}

.Header a:hover {
  background-color: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

.Main {
  padding: 40px 5%;
  max-width: 1400px;
  margin: 0 auto;
}

.coin-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 30px;
  padding: 30px 0;
}

.coin-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 30px;
  border-radius: 20px;
  background-color: var(--card-background);
  box-shadow: 0 10px 20px var(--shadow-color);
  transition: all 0.3s ease;
}

.coin-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 30px var(--hover-shadow);
}

.coin-card img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin-bottom: 20px;
}

.coin-card h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary-color);
}

.coin-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 15px;
}

.coin-card p {
  font-size: 16px;
  margin-bottom: 10px;
  color: var(--text-color);
}

.view-more {
  margin-top: 20px;
  padding: 10px 20px;
  background-color: var(--accent-color);
  color: var(--header-text);
  border-radius: 25px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.view-more:hover {
  background-color: var(--primary-color);
  transform: translateY(-2px);
}

.coin-detail {
  background-color: var(--card-background);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 15px 30px var(--shadow-color);
}

.coin-header {
  display: flex;
  align-items: center;
  margin-bottom: 30px;
}

.coin-header img {
  width: 100px;
  height: 100px;
  object-fit: contain;
  margin-right: 30px;
}

.coin-header h1 {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary-color);
}

.coin-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 30px;
}

.info-item {
  background-color: var(--background-color);
  padding: 20px;
  border-radius: 15px;
  box-shadow: 0 5px 15px var(--shadow-color);
}

.info-item h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 10px;
}

.info-item p {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-color);
}

.positive {
  color: var(--positive-color);
}

.negative {
  color: var(--negative-color);
}

.Main-loading {
  border: 6px solid var(--card-border);
  border-top: 6px solid var(--accent-color);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: spin 1s linear infinite, pulse 2s ease-in-out infinite;
  margin: 40px auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

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

.coin-card, .coin-item, .coin-detail {
  animation: fadeIn 0.6s ease-out;
}

@media (max-width: 768px) {
  .Header-main {
    flex-direction: column;
    text-align: center;
    padding: 20px;
  }

  .Header-title {
    margin: 15px 0;
    font-size: 28px;
  }

  .coin-container {
    grid-template-columns: 1fr;
  }

  .coin-header {
    flex-direction: column;
    text-align: center;
  }

  .coin-header img {
    margin-right: 0;
    margin-bottom: 20px;
  }

  .coin-info {
    grid-template-columns: 1fr;
  }

  .coin-card, .coin-item, .coin-detail {
    padding: 20px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --background-color: #1a1b26;
    --text-color: #a9b1d6;
    --card-background: #24283b;
    --card-border: #414868;
    --shadow-color: rgba(67, 97, 238, 0.2);
  }

  .Header-main {
    background: linear-gradient(135deg, #1a1b26, #24283b);
  }

  .coin-card, .coin-item, .coin-detail {
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
  }

  .coin-card:hover, .coin-item:hover {
    box-shadow: 0 20px 30px rgba(0,0,0,0.3);
  }

  .info-item {
    background-color: var(--card-background);
  }
}