/* ============================================
   新青年各大好汉 — 原版深色风格
   ============================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 40%, #16213e 70%, #0f3460 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  color: #fff;
  position: relative;
}

/* 背景图 + 暗色遮罩 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(rgba(0, 0, 0, 0.7), rgba(10, 10, 30, 0.75)) no-repeat center center fixed,
    url('bg.jpg') no-repeat center center fixed;
  background-size: cover, cover;
}

/* 确保所有内容在遮罩之上 */
h1, .subtitle, .friend-grid, footer, .search-box, .section-title,
.credit-top, .group-hint, .home-buttons, .back-btn, .placeholder-page,
.contact-line {
  position: relative;
  z-index: 1;
}

.friend-card {
  z-index: 1;
}

/* ============ 标题区 ============ */
.credit-top {
  font-size: 0.85rem;
  color: #8892b0;
  position: relative;
  z-index: 1;
  margin-bottom: 4px;
}

/* 联系提示行：和标题一样大，粉红醒目 */
.contact-line {
  font-family: "SimSun", "宋体", serif;
  font-size: 2rem;
  font-weight: bold;
  color: #ff69b4;
  position: relative;
  z-index: 1;
  margin-bottom: 8px;
}

h1 {
  font-size: 2rem;
  margin-bottom: 8px;
  background: linear-gradient(90deg, #00d2ff, #3a7bd5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  color: #8892b0;
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.group-hint {
  color: #5a7aaa;
  font-size: 0.8rem;
  margin-bottom: 30px;
  position: relative;
  z-index: 1;
}

/* ============ 名单网格 ============ */
.friend-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  width: 100%;
  max-width: 600px;
}

@media (min-width: 600px) {
  .friend-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
    max-width: 1200px;
  }
}

/* ============ 成员卡片（方形） ============ */
.friend-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0;
  padding: 10px 4px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  content-visibility: auto;
  contain-intrinsic-size: 80px;
}

.friend-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.friend-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 210, 255, 0.4);
  box-shadow: 0 8px 32px rgba(0, 210, 255, 0.15);
}

.friend-card:hover::before {
  opacity: 1;
}

.friend-card:active {
  transform: translateY(-1px);
}

.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00d2ff, #3a7bd5);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 6px;
  font-size: 1rem;
  position: relative;
  z-index: 1;
  overflow: hidden;
}

@media (min-width: 600px) {
  .avatar {
    width: 42px;
    height: 42px;
    margin-bottom: 8px;
    font-size: 1.2rem;
  }
  .friend-card {
    padding: 14px 8px;
    border-radius: 12px;
  }
}

.avatar img {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.friend-name {
  font-size: 0.68rem;
  font-weight: 600;
  margin-bottom: 2px;
  position: relative;
  z-index: 1;
  word-break: break-all;
  line-height: 1.2;
}

@media (min-width: 600px) {
  .friend-name {
    font-size: 0.85rem;
    margin-bottom: 4px;
  }
}

.friend-qq {
  font-size: 0.55rem;
  color: #8892b0;
  position: relative;
  z-index: 1;
}

.friend-note {
  font-size: 0.5rem;
  color: #ff6b6b;
  position: relative;
  z-index: 1;
  margin-top: 2px;
  line-height: 1.3;
  word-break: break-all;
}

@media (min-width: 600px) {
  .friend-qq {
    font-size: 0.7rem;
  }
}

.tap-hint {
  font-size: 0.55rem;
  color: #5a6a8a;
  margin-top: 4px;
  opacity: 0;
  transform: translateY(5px);
  transition: all 0.3s ease;
  position: relative;
  z-index: 1;
}

.friend-card:hover .tap-hint {
  opacity: 1;
  transform: translateY(0);
}

/* ============ 点击涟漪 ============ */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(0, 210, 255, 0.3);
  transform: scale(0);
  animation: ripple-anim 0.6s ease-out;
  pointer-events: none;
}

@keyframes ripple-anim {
  to { transform: scale(4); opacity: 0; }
}

/* ============ 搜索框 ============ */
.search-box {
  width: 100%;
  max-width: 500px;
  margin-bottom: 30px;
  position: relative;
  z-index: 1;
}

.search-box input {
  width: 100%;
  padding: 14px 20px 14px 44px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: all 0.3s ease;
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.35);
}

.search-box input:focus {
  border-color: rgba(0, 210, 255, 0.5);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.1);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  pointer-events: none;
}

.hidden { display: none; }

/* ============ 分区标题 ============ */
.section-title {
  font-size: 1.3rem;
  margin: 30px 0 16px;
  position: relative;
  z-index: 1;
  color: #ccd6f6;
  width: 100%;
  max-width: 1200px;
  text-align: left;
  padding-left: 4px;
}

/* ============ 首页按钮 ============ */
.home-buttons {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
  max-width: 400px;
  margin-top: 40px;
}

.home-btn {
  padding: 24px 32px;
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  position: relative;
  z-index: 1;
}

/* 人员名单按钮：方形 */
.home-btn--square {
  border-radius: 0;
  border: 1px solid rgba(0,210,255,0.35);
  background: rgba(0,210,255,0.08);
}

.home-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(0,210,255,0.5);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,210,255,0.12);
}

.home-btn .icon { font-size: 2.5rem; display: block; margin-bottom: 8px; }
.home-btn .btn-note { display: block; font-size: 0.65rem; color: #8892b0; font-weight: 400; margin-top: 4px; }

.home-btn--link { text-decoration: none; }

/* ============ 返回按钮 ============ */
.back-btn {
  align-self: flex-start;
  padding: 8px 18px;
  border-radius: 20px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  color: #8892b0;
  font-size: 0.9rem;
  cursor: pointer;
  margin-bottom: 20px;
  transition: all 0.2s;
}
.back-btn:hover { color: #fff; border-color: rgba(0,210,255,0.4); }

/* ============ 加群按钮 ============ */
.support-grid {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
  max-width: 420px;
  margin-top: 20px;
  align-items: center;
}

.support-btn {
  width: 100%;
  padding: 20px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(10px);
  color: #fff;
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  position: relative;
  z-index: 1;
}
.support-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(0,210,255,0.5);
  transform: translateY(-2px);
}
.support-btn .icon { font-size: 2rem; }
.support-btn .group-qq { font-size: 0.7rem; color: #8892b0; font-weight: 400; }

/* ============ 加载更多按钮 ============ */
.more-btn {
  display: none;
  margin: 14px auto;
  padding: 10px 28px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 22px;
  background: rgba(255,255,255,0.08);
  color: #ccd6f6;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  z-index: 1;
}
.more-btn:hover {
  background: rgba(0,210,255,0.15);
  border-color: rgba(0,210,255,0.4);
}

/* ============ 页脚 ============ */
footer {
  margin-top: 60px;
  color: #3a4a6a;
  font-size: 0.8rem;
  position: relative;
  z-index: 1;
  text-align: center;
}

.credit { color: #8892b0; font-size: 0.85rem; }
.placeholder-page {
  text-align: center;
  padding: 80px 20px;
  color: #8892b0;
  font-size: 1.1rem;
  line-height: 2;
}

/* ============ 页面系统 ============ */
.page { display: none; }
.page.active { display: flex; flex-direction: column; align-items: center; width: 100%; }