/* ============================================================
   stars3d.css — 3D 项目星空（首页嵌入板块版）
   纯星空沉浸板块：无文字标题/说明/计数，仅极简图标交互提示
   ============================================================ */

.stars-section {
  position: relative;
  display: block;
  height: 100vh;
  min-height: 560px;
  padding: 0 !important;
  margin: 0;
  overflow: hidden;
  touch-action: none;
  background:
    radial-gradient(140% 105% at 50% 42%, rgba(24, 36, 76, 0.55) 0%, rgba(14, 20, 48, 0.68) 34%, rgba(7, 10, 26, 0.86) 66%, rgba(2, 3, 8, 0.97) 100%),
    radial-gradient(90% 70% at 24% 16%, rgba(38, 60, 116, 0.16) 0%, rgba(30, 46, 92, 0.06) 46%, rgba(10, 12, 30, 0) 74%),
    #04060e;
}
#stars-canvas {
  position: absolute;
  inset: 0;
  width: 100vw;
  height: 100vh;
  max-width: 100vw;
  max-height: 100vh;
  display: block;
  cursor: grab;
  touch-action: none;
  -webkit-tap-highlight-color: transparent;
}
#stars-canvas:active { cursor: grabbing; }

/* ---------- 详情面板遮罩 ---------- */
.star-panel-mask[hidden],
.star-panel[hidden] { display: none !important; }
.star-panel-mask {
  position: fixed;
  inset: 0;
  background: rgba(2, 4, 10, 0.55);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 120;
}

/* ---------- 详情面板 ---------- */
.star-panel {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: min(400px, calc(100vw - 48px));
  padding: 28px 26px 24px;
  z-index: 121;
  border-radius: 18px;
  border: 1px solid rgba(170, 182, 200, 0.18);
  background: linear-gradient(165deg, rgba(22, 28, 46, 0.92), rgba(10, 14, 26, 0.94));
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.55), 0 0 40px rgba(90, 110, 160, 0.12);
  color: #e8ecf4;
}
.star-panel-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: rgba(200, 210, 225, 0.75);
  cursor: pointer;
  border-radius: 50%;
}
.star-panel-close:hover { color: #fff; background: rgba(255, 255, 255, 0.08); }
.star-panel-close svg {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 1.8;
  fill: none;
  stroke-linecap: round;
}
.star-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.star-panel-code {
  font-family: "SF Mono", "Cascadia Code", Consolas, monospace;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: rgba(205, 215, 230, 0.85);
  border: 1px solid rgba(180, 192, 210, 0.28);
  border-radius: 6px;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.05);
}
.star-panel-type {
  font-size: 12px;
  color: rgba(190, 202, 220, 0.85);
  border: 1px solid rgba(170, 184, 205, 0.25);
  border-radius: 999px;
  padding: 2px 10px;
  background: rgba(255, 255, 255, 0.05);
}
.star-panel-name {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 600;
  line-height: 1.35;
  color: #f2f5fa;
}
.star-panel-desc {
  margin: 0 0 18px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(205, 215, 230, 0.82);
}
.star-panel-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}
.star-rate-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 12px;
  font-size: 13px;
  border-radius: 10px;
  border: 1px solid rgba(170, 184, 205, 0.28);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(215, 224, 238, 0.9);
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}
.star-rate-btn:hover {
  border-color: rgba(200, 214, 234, 0.5);
  background: rgba(255, 255, 255, 0.08);
}
.star-rate-btn.active-like {
  border-color: rgba(150, 210, 180, 0.65);
  color: #b9ecd2;
  background: rgba(120, 200, 165, 0.12);
}
.star-rate-btn.active-dislike {
  border-color: rgba(200, 150, 150, 0.55);
  color: #e7c2c2;
  background: rgba(190, 120, 120, 0.12);
}
.star-panel-note {
  margin: 0 0 16px;
  font-size: 12px;
  line-height: 1.6;
  color: rgba(185, 196, 212, 0.6);
}
.star-panel-links {
  display: flex;
  gap: 10px;
}
.star-panel-links .btn { flex: 1; }

/* ---------- 移动端 ---------- */
@media (max-width: 640px) {
  .star-panel { padding: 22px 18px 18px; }
}

/* ---------- 减弱动效：静态星空 ---------- */
@media (prefers-reduced-motion: reduce) {
  #stars-canvas { cursor: default; }
}
/* ---------- 全屏自适应（窄屏不挤压） ---------- */
@media (max-width: 640px) {
  .stars-section { height: 100vh; }
}

/* ---------- 宇宙大爆炸转场：每次下滑进入星空时播放 ----------
   亮度脉冲（canvas 同步绘制主光球/扩张波环/星尘喷涌/星星生长） */
.stars-section.light-burst {
  animation: starsBurstFlash 1.5s ease-out;
}
.stars-section.light-burst::before,
.stars-section.light-burst::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 2px solid rgba(224, 234, 255, 0.85);
  transform: translate(-50%, -50%) scale(0.08);
  opacity: 0;
  animation: starsBurstRing 1.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: none;
  z-index: 6;
}
.stars-section.light-burst::after {
  animation-delay: 0.14s;
  border-color: rgba(168, 182, 240, 0.5);
  border-width: 1.5px;
}
@keyframes starsBurstFlash {
  0% { filter: brightness(2.2) saturate(1.35); }
  28% { filter: brightness(1.55); }
  58% { filter: brightness(1.12); }
  100% { filter: brightness(1); }
}
@keyframes starsBurstRing {
  0% { transform: translate(-50%, -50%) scale(0.08); opacity: 0.95; }
  100% { transform: translate(-50%, -50%) scale(30); opacity: 0; }
}

/* ---------- 减弱动效：宇宙大爆炸降级为柔光淡入 ---------- */
.stars-section.light-burst-fade {
  animation: starsFadeIn 1s ease;
}
@keyframes starsFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}