/* 技能和旅程样式 */

/* 技能星空 - 漂浮节点 */
.skills-section {
  position: relative;
  overflow: visible;
}

.skills-universe {
  position: relative;
  width: 100%;
  height: 600px;
  max-width: 1200px;
  margin: 0 auto;
}

.skill-float {
  position: absolute;
  padding: 12px 24px;
  background: rgba(255,255,255,0.03);
  border-radius: 100px;
  font-size: 14px;
  white-space: nowrap;
  cursor: default;
  transition: all 0.4s ease;
  animation: floatRandom 6s ease-in-out infinite;
}

.skill-float::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 100px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(34,211,238,0.3), rgba(168,85,247,0.3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.5;
  transition: opacity 0.3s;
}

.skill-float:hover::before {
  opacity: 1;
}

.skill-float:hover {
  transform: scale(1.15);
  background: rgba(34,211,238,0.1);
  box-shadow: 0 0 40px rgba(34,211,238,0.3);
}

.skill-float.tech { color: var(--cyan); }
.skill-float.product { color: var(--purple); }
.skill-float.ai { color: var(--pink); }

/* 不同的漂浮动画 */
@keyframes floatRandom {
  0%, 100% { transform: translate(0, 0); }
  25% { transform: translate(10px, -15px); }
  50% { transform: translate(-5px, 10px); }
  75% { transform: translate(15px, 5px); }
}

.skill-float:nth-child(odd) { animation-duration: 7s; }
.skill-float:nth-child(3n) { animation-duration: 8s; animation-direction: reverse; }
.skill-float:nth-child(4n) { animation-duration: 5s; }

/* 技能连接线 */
.skills-connections {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
}

/* 旅程 - 流动河流 */
.journey-section {
  padding: 120px 40px;
  position: relative;
}

.journey-river {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

/* 流动的路径线 */
.journey-path {
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 4px;
  background: linear-gradient(90deg,
    var(--cyan),
    var(--blue),
    var(--purple),
    var(--pink)
  );
  background-size: 300% 100%;
  animation: flowGradient 8s linear infinite;
  border-radius: 2px;
  opacity: 0.6;
}

@keyframes flowGradient {
  0% { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

.journey-stops {
  display: flex;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.journey-stop {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 20px;
}

.journey-stop:nth-child(even) .journey-stop-content {
  order: -1;
  margin-bottom: 40px;
  margin-top: 0;
}

.journey-stop:nth-child(even) .journey-node {
  margin-top: 0;
}

.journey-node {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--bg);
  border: 3px solid;
  position: relative;
  z-index: 2;
  transition: all 0.4s ease;
}

.journey-stop:nth-child(1) .journey-node { border-color: var(--cyan); }
.journey-stop:nth-child(2) .journey-node { border-color: var(--blue); }
.journey-stop:nth-child(3) .journey-node { border-color: var(--purple); }
.journey-stop:nth-child(4) .journey-node { border-color: var(--pink); }

.journey-node::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  border: 1px solid currentColor;
  opacity: 0;
  transition: all 0.3s;
}

.journey-stop:hover .journey-node {
  transform: scale(1.3);
  box-shadow: 0 0 30px currentColor;
}

.journey-stop:hover .journey-node::after {
  opacity: 0.5;
  inset: -16px;
}

.journey-stop-content {
  margin-top: 40px;
  max-width: 200px;
}

.journey-label {
  font-size: 11px;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
  opacity: 0.5;
}

.journey-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  transition: color 0.3s;
}

.journey-stop:nth-child(1):hover .journey-title { color: var(--cyan); }
.journey-stop:nth-child(2):hover .journey-title { color: var(--blue); }
.journey-stop:nth-child(3):hover .journey-title { color: var(--purple); }
.journey-stop:nth-child(4):hover .journey-title { color: var(--pink); }

.journey-desc {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.6;
}