/* Chill purple-black animated background for the entire page */
body, section, nav, footer {
  background: linear-gradient(135deg,
    #0f0c29,
    #302b63,
    #0f0c29,
    #24243e,
    #0f0c29,
    #4e4376
  );
  background-size: 1200% 1200%;
  animation: chillGradient 60s ease infinite;
  color: white;
}

@keyframes chillGradient {
  0% { background-position: 0% 50%; }
  25% { background-position: 50% 100%; }
  50% { background-position: 100% 50%; }
  75% { background-position: 50% 0%; }
  100% { background-position: 0% 50%; }
}

/* Buttons hover pop-out */
.button {
  transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}
.button:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.5);
}

/* Remove underline for buttons */
button, button:hover, a.button, a.button:hover {
  text-decoration: none !important;
}

/* Slide-in underline only for links with class "underlinehover" */
.underlinehover {
  position: relative;
  text-decoration: none;
  color: inherit;
}
.underlinehover::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 100%;
  height: 2px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.underlinehover:hover::after {
  transform: scaleX(1);
}

/* Tooltip for forks */
.tooltip { position: relative; display: inline-block; cursor: pointer; }
.tooltip .tooltip-text {
  opacity: 0;
  pointer-events: none;
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background-color: #1f2937;
  color: #f9fafb;
  text-align: center;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  transition: opacity 0.3s ease, transform 0.3s ease;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 4px;
}
.tooltip .tooltip-text::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: #1f2937 transparent transparent transparent;
}
.tooltip:hover .tooltip-text {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(-50%) translateY(-5px);
}

/* Project card fade-in animation */
/* Project card fade-in animation */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Subtle animated gradient on project cards */
@keyframes cardGradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Project card styles */
.project-card {
  opacity: 0; /* hidden initially for fade-in */
  animation: fadeInUp 0.5s ease forwards; /* only fade-in here */
  transition: transform 0.3s ease, box-shadow 0.3s ease; /* allow hover transform */
  border-radius: 1rem;
  background: linear-gradient(135deg, rgba(70,30,120,0.15), rgba(0,0,0,0.4));
  background-size: 400% 400%;
  animation-name: fadeInUp, cardGradientMove;
  animation-duration: 0.5s, 30s;
  animation-timing-function: ease, ease;
  animation-fill-mode: forwards, forwards;
  animation-iteration-count: 1, infinite;
}

/* Project card hover pop-out */
.project-card:hover {
  transform: scale(1.05); /* now works properly */
  box-shadow: 0 12px 30px rgba(0,0,0,0.6);
  /* gradient stays the same on hover */
}


/* Subtle animated gradient on project card */
@keyframes cardGradientMove {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* Sticky footer */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
footer {
  margin-top: auto;
  background-color: #1f2937;
  text-align: center;
  padding: 1.5rem;
  color: #9ca3af;
}