:root {
  --primary-gradient: -webkit-linear-gradient(#00d0ff, #001aff);
  --glass-bg: rgba(255, 255, 255, 0.2);
  --glass-border: rgba(255, 255, 255, 0.3);
  --text-color: #fff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(0, 0, 0, 0.4);
    --text-color: #fff;
  }
}

@media (prefers-color-scheme: light) {
  :root {
    --glass-bg: rgba(255, 255, 255, 0.4);
    --glass-border: rgba(255, 255, 255, 0.5);
    --text-color: #000;
  }
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: sans-serif;
}

body {
  background: var(--primary-gradient);
  color: var(--text-color);
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 400px;
  backdrop-filter: blur(10px);
  background: var(--glass-bg);
  
  overflow: hidden;
  height: 100vh;

  animation: appear 1s linear forwards;
}

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

.header {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  text-align: center;
  padding: 20px;
  /* height: 50vh; */
  background-image: url("../imagenes/pingu.jpg");
  background-position: center;

  background-size: cover;
  border-bottom-left-radius: 20px;
  border-bottom-right-radius: 20px;
}

.header #logo {
  width: 35%;
  height: 100%;
  border-radius: 50%;
  border: 5px solid var(--glass-bg);
  backdrop-filter: blur(2px);
  aspect-ratio: 1/1;
  object-fit: contain;
}

.header h1 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: black;
}

.header i {
  backdrop-filter: blur(2px);
  border-radius: 10px;
  padding: 5px;
}

.buttons {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.glass-button {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 10px 15px;
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-color);
  backdrop-filter: blur(2px);
  transition: background 0.3s;
}

.glass-button:hover {
  background: rgba(255, 255, 255, 0.1);
}

.links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
}

.link-item {
  text-decoration: none;
  color: var(--text-color);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  padding: 12px;
  border-radius: 12px;
  text-align: center;
  font-size: 1rem;
  backdrop-filter: blur(10px);
  transition: background 0.3s;
}

.link-item:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Responsive desktop */
@media (min-width: 600px) {
  .header h1 {
    font-size: 2rem;
  }

  body {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
  }

  .container {
    height: auto;
    transform: scale(150%);
    border-radius: 20px;
  }

  .link-item {
    font-size: 1.1rem;
  }
}