body {
  padding: 20px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen, Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background-color: rgb(249, 252, 255);
}
h1 {
  color: #333;
}

.rate {
  display: flex;
  align-items: center;
  background: white;
  padding: 20px;
  margin: 10px 0;
  border-radius: 12px;
  box-shadow: 0 3px 5px rgba(0, 0, 0, 0.1);
}

.rate img {
  width: 30px;
  height: 30px;
  margin-right: 10px;
}

.rate span {
  flex: 1;
}

.rate strong {
  font-size: 1.2em;
  color: #333;
}

/* Header Styles */
.main-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
}

.header-title {
  font-size: 2em;
  color: #333;
  font-weight: bold;
}

/* Button Styles */
.download-btn {
  bottom: 60px;
  display: block;
  margin: 0 auto 24px auto;
  padding: 12px 32px;
  max-width: 250px; /* Limita el ancho */
  width: auto; /* No ocupa todo el ancho */
  background: linear-gradient(90deg, #3de88f 0%, #7ffe53 100%);
  color: #fff;
  font-size: 1.1em;
  font-weight: 600;
  border: none;
  border-radius: 30px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  text-align: center;
  text-decoration: none;
  transition: background 0.3s, transform 0.2s;
}

.download-btn:hover {
  background: linear-gradient(90deg, #3de88f 0%, #3de88f 100%);
  transform: translateY(-2px) scale(1.03);
}

.card-view {
  max-width: 380px;
  margin: 32px auto;
  padding: 24px;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.input-row {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

#moneda-select {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  margin-right: 12px;
  font-size: 1.3em;
}

#input-cantidad,
#output-cantidad {
  flex: 1;
  min-width: 0;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 1.3em;
  box-sizing: border-box;
}

.main-footer {
  background-color: #181c20;
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  text-align: center;
  margin-top: 40px;
  color: #666;
  font-size: 0.9em;
}

.main-footer a {
  color: #1eff96;
  text-decoration: none;
}

.main-footer a:hover {
  color: #8fe269;
  text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    padding: 10px;
  }
  h1 {
    font-size: 1.5em;
    text-align: center;
  }
  .rate {
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
  }
  .rate img {
    margin-bottom: 10px;
    margin-right: 0;
  }
  .rate span,
  .rate strong {
    font-size: 1.1em;
  }
}
@media (max-width: 600px) {
  body {
    padding: 20px;
  }
  h1 {
    font-size: 1.3em;
    text-align: center;
  }
  .rate {
    flex-direction: row;
    align-items: center;
    padding: 8px;
  }
  .rate img {
    margin-bottom: 0;
    margin-right: 8px;
  }
  .rate span,
  .rate strong {
    font-size: 1em;
  }
}

/* Modo oscuro automático */
@media (prefers-color-scheme: dark) {
  body {
    background-color: #181c20;
    color: #e4e6eb;
  }
  .main-header {
    background: transparent;
  }
  .header-title {
    color: #e4e6eb;
  }
  .rate {
    background: #23272b !important;
    color: #e4e6eb !important;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4);
    border: 2px solid #333;
  }
  .rate span,
  .rate strong {
    color: #e4e6eb !important;
  }
  .download-btn {
    background: linear-gradient(90deg, #23272b 0%, #26282b 100%);
    color: #e4e6eb;
  }
  .download-btn:hover {
    background: linear-gradient(90deg, #333 0%, #444 100%);
  }
  .card-view {
    background: #23272b;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    border: 2px solid #333;
  }

  #moneda-select,
  #input-cantidad,
  #output-cantidad {
    background: #2c2f33;
    color: #e4e6eb;
    border: 1px solid #444;
  }
}