/*
 * Globals
 */


/* Custom default button */
.btn-light,
.btn-light:hover,
.btn-light:focus {
  color: #333;
  text-shadow: none; /* Prevent inheritance from `body` */
}


/*
 * Base structure
 */

/*body {
  text-shadow: 0 .05rem .1rem rgba(0, 0, 0, .5);
  box-shadow: inset 0 0 5rem rgba(0, 0, 0, .5);
}
*/
body {
  background: linear-gradient(-45deg, #1c1c1c, #2a2a40, #1c1c1c, #2a2a40);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
}
@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}
.cover-container {
  max-width: 42em;
}


/*
 * Header
 */

.nav-masthead .nav-link {
  color: rgba(255, 255, 255, .5);
  border-bottom: .25rem solid transparent;
}

.nav-masthead .nav-link:hover,
.nav-masthead .nav-link:focus {
  border-bottom-color: rgba(255, 255, 255, .25);
}

.nav-masthead .nav-link + .nav-link {
  margin-left: 1rem;
}

.nav-masthead .active {
  color: #fff;
  border-bottom-color: #fff;
}

#matrix {
  position: fixed;
  top: 0;
  left: 0;
  z-index: -1; /* 保证在内容后面 */
  width: 100%;
  height: 100%;
  pointer-events: none; /* 不影响点击 */
}

.terminal-window {
  background: #000;
  padding: 1rem;
  border-radius: 0.5rem;
  height: 300px;
  overflow-y: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  color: #00ff00;
  text-shadow: 0 0 5px #0f0;
}