/* ============================================
   星空观星台 — 共享样式表
   暗色星空主题 · 毛玻璃卡片 · 微动效
   ============================================ */

/* --- CSS 自定义属性（主题色） --- */
:root {
  --color-bg-start: #0b0e2a;
  --color-bg-end: #1a1040;
  --color-primary: #f0c040;
  --color-primary-glow: rgba(240, 192, 64, 0.3);
  --color-secondary: #6c63ff;
  --color-accent: #00d4ff;
  --color-text: #e8e8f0;
  --color-text-muted: #a0a0b8;
  --color-card-bg: rgba(255, 255, 255, 0.06);
  --color-card-border: rgba(255, 255, 255, 0.1);
  --color-card-hover: rgba(255, 255, 255, 0.12);
  --color-danger: #ff6b6b;
  --color-success: #51cf66;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
}

/* --- 全局重置 --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", "Helvetica Neue", sans-serif;
  background: linear-gradient(135deg, var(--color-bg-start), var(--color-bg-end));
  color: var(--color-text);
  min-height: 100vh;
  line-height: 1.6;
  padding: 0 20px 40px;
}

/* --- 星空背景闪烁星星（伪元素） --- */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 50% 10%, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 90% 80%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 15% 85%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 45% 45%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1px 1px at 80% 15%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1.5px 1.5px at 60% 75%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 25% 35%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 75% 55%, rgba(255,255,255,0.3), transparent),
    radial-gradient(1.5px 1.5px at 5% 50%, rgba(255,255,255,0.5), transparent),
    radial-gradient(1px 1px at 55% 90%, rgba(255,255,255,0.4), transparent),
    radial-gradient(1px 1px at 35% 5%, rgba(255,255,255,0.6), transparent),
    radial-gradient(1.5px 1.5px at 95% 30%, rgba(255,255,255,0.5), transparent);
  background-size: 200px 200px;
  pointer-events: none;
  z-index: 0;
  animation: twinkle 4s ease-in-out infinite alternate;
}

@keyframes twinkle {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

/* --- 导航栏 --- */
nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 20px 0 10px;
  position: relative;
  z-index: 1;
}

nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  font-size: 0.9rem;
  transition: var(--transition);
}

nav a:hover {
  color: var(--color-primary);
  background: var(--color-card-hover);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

nav a[aria-current="page"] {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: rgba(240, 192, 64, 0.1);
}

/* --- 标题渐变文字 --- */
h1, h2 {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.3;
}

h1 {
  font-size: 2.2rem;
  text-align: center;
  margin: 30px 0 10px;
  position: relative;
  z-index: 1;
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

/* --- 卡片容器（网格） --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* --- 卡片 --- */
.card {
  background: var(--color-card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  cursor: pointer;
}

.card:hover {
  background: var(--color-card-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.card p {
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

/* --- 按钮 --- */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), #e6a800);
  color: #1a1a2e;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--color-primary-glow);
}

.btn-secondary {
  background: var(--color-card-bg);
  color: var(--color-text);
  border: 1px solid var(--color-card-border);
}

.btn-secondary:hover {
  background: var(--color-card-hover);
  border-color: var(--color-secondary);
  transform: translateY(-2px);
}

/* --- 毛玻璃容器（通用） --- */
.glass {
  background: var(--color-card-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-card);
}

/* --- 排行榜表格 --- */
.rank-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

.rank-table th,
.rank-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-card-border);
}

.rank-table th {
  color: var(--color-primary);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.rank-table td {
  color: var(--color-text);
}

.rank-table tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.rank-number {
  display: inline-block;
  width: 28px;
  height: 28px;
  line-height: 28px;
  text-align: center;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.85rem;
}

.rank-1 { background: #f0c040; color: #1a1a2e; }
.rank-2 { background: #a0a0b8; color: #1a1a2e; }
.rank-3 { background: #cd7f32; color: #1a1a2e; }
.rank-other { background: rgba(255,255,255,0.08); color: var(--color-text-muted); }

/* --- 观星望远镜区域 --- */
.telescope-view {
  position: relative;
  width: 100%;
  max-width: 800px;
  height: 400px;
  margin: 20px auto;
  border-radius: var(--radius);
  overflow: hidden;
  background: radial-gradient(ellipse at center, #0d0f3a, #05061a);
  border: 1px solid var(--color-card-border);
}

.star-object {
  position: absolute;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.star-object:hover {
  transform: scale(1.3);
  filter: brightness(1.4);
}

.star-object .label {
  display: block;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  pointer-events: none;
}

/* --- 百科词条卡片 --- */
.entry-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  transition: var(--transition);
}

.entry-card:hover {
  border-color: var(--color-accent);
  background: var(--color-card-hover);
}

.entry-card h3 {
  color: var(--color-accent);
  margin-bottom: 6px;
}

.entry-card .entry-type {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 10px;
  border-radius: 20px;
  background: rgba(108, 99, 255, 0.2);
  color: var(--color-secondary);
  margin-bottom: 8px;
}

.entry-card.locked {
  opacity: 0.5;
  filter: grayscale(0.6);
}

.entry-card.locked h3::after {
  content: ' 🔒';
}

/* --- 进度 / 统计条 --- */
.stat-bar {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  margin: 20px 0;
  position: relative;
  z-index: 1;
}

.stat-item {
  text-align: center;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  padding: 16px 24px;
  min-width: 140px;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* ============================================
   成就勋章墙
   ============================================ */

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 16px;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.achievement-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
}

.achievement-card:hover {
  background: var(--color-card-hover);
  transform: translateY(-4px);
}

.achievement-card .icon {
  font-size: 2.4rem;
  margin-bottom: 8px;
  display: block;
}

.achievement-card h4 {
  color: var(--color-primary);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.achievement-card p {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.achievement-card .badge {
  display: inline-block;
  font-size: 0.7rem;
  padding: 2px 10px;
  border-radius: 20px;
  margin-top: 8px;
}

.achievement-card .badge.earned {
  background: rgba(81, 207, 102, 0.2);
  color: var(--color-success);
}

.achievement-card .badge.locked {
  background: rgba(255, 107, 107, 0.15);
  color: var(--color-danger);
}

.achievement-card.locked {
  opacity: 0.45;
  filter: grayscale(0.7);
}

.achievement-card.locked .icon {
  filter: grayscale(1);
}

.achievement-category {
  max-width: 900px;
  margin: 0 auto 30px;
  position: relative;
  z-index: 1;
}

.achievement-category h3 {
  color: var(--color-accent);
  margin-bottom: 12px;
  font-size: 1.1rem;
}

/* ============================================
   段位展示
   ============================================ */

.tier-display {
  text-align: center;
  padding: 24px;
  position: relative;
  z-index: 1;
}

.tier-display .tier-name {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.tier-display .tier-progress {
  max-width: 400px;
  margin: 12px auto;
  height: 10px;
  background: rgba(255,255,255,0.1);
  border-radius: 10px;
  overflow: hidden;
}

.tier-display .tier-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 10px;
  transition: width 0.5s ease;
}

.tier-display .tier-next {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  margin-top: 6px;
}

/* 段位皮肤 */
body.skin-silver .tier-name { color: #c0c0c0; text-shadow: 0 0 20px rgba(192,192,192,0.3); }
body.skin-gold .tier-name { color: #ffd700; text-shadow: 0 0 20px rgba(255,215,0,0.3); }
body.skin-cosmic .tier-name { color: #b366ff; text-shadow: 0 0 30px rgba(179,102,255,0.4); }

/* ============================================
   个人档案页
   ============================================ */

.profile-header {
  text-align: center;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.profile-header .avatar {
  font-size: 4rem;
  margin-bottom: 8px;
}

.heatmap {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  max-width: 400px;
  margin: 12px auto;
}

.heatmap-cell {
  aspect-ratio: 1;
  border-radius: 4px;
  background: rgba(255,255,255,0.06);
  font-size: 0.55rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.heatmap-cell.active {
  background: var(--color-primary);
  box-shadow: 0 0 8px var(--color-primary-glow);
}

.heatmap-cell.today {
  border: 2px solid var(--color-accent);
}

.distribution-chart {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 12px 0;
}

.dist-item {
  text-align: center;
  padding: 12px 16px;
  background: var(--color-card-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-card-border);
  min-width: 80px;
}

.dist-item .num {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-primary);
}

.dist-item .label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* 分享按钮 */
.share-btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  border: none;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  background: linear-gradient(135deg, var(--color-secondary), #5a52e0);
  color: #fff;
  transition: var(--transition);
}

.share-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 99, 255, 0.4);
}

/* 排行榜 tab 切换 */
.rank-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.rank-tab {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-card-border);
  background: var(--color-card-bg);
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  transition: var(--transition);
}

.rank-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.rank-tab.active {
  background: rgba(240, 192, 64, 0.15);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.rank-section {
  display: none;
}

.rank-section.active {
  display: block;
}

/* --- 返回顶部 --- */
.back-home {
  display: block;
  text-align: center;
  margin: 30px auto 10px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}

.back-home:hover {
  color: var(--color-primary);
}

/* --- 响应式 --- */
@media (max-width: 600px) {
  body { padding: 0 12px 30px; }
  h1 { font-size: 1.6rem; }
  h2 { font-size: 1.2rem; }
  .card-grid { grid-template-columns: 1fr; }
  .telescope-view { height: 300px; }
  nav a { font-size: 0.8rem; padding: 6px 12px; }
  .stat-bar { gap: 12px; }
  .stat-item { min-width: 100px; padding: 12px 16px; }
}