/* TeamCoder 战队介绍页 - 全局样式 v5
   轮播图 + 全宽无框 + 底部名导航 + 四向填充动画 */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: #000000;
  color: #f5f5f7;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
    "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: #2997ff;
  text-decoration: none;
}

/* ========== 动态背景 ========== */
.bg-gradient {
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -3;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(41, 151, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse 60% 50% at 80% 30%, rgba(191, 90, 242, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 70% 50% at 50% 80%, rgba(255, 69, 58, 0.10) 0%, transparent 50%),
    linear-gradient(180deg, #000000 0%, #050505 50%, #000000 100%);
  animation: bgShift 20s ease-in-out infinite;
}

.bg-theme-tint {
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(ellipse 100% 50% at 50% 50%, var(--theme-color, transparent) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.8s ease;
  mix-blend-mode: screen;
}

.bg-theme-tint.active {
  opacity: 0.12;
}

.bg-grid {
  position: fixed;
  top: 0; left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}

@keyframes bgShift {
  0%, 100% { background-position: 0% 0%, 100% 0%, 50% 100%, 0% 0%; }
  50% { background-position: 30% 20%, 70% 50%, 50% 70%, 0% 0%; }
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  padding: 60px 24px;
}

.hero__logo {
  font-size: 120px;
  font-weight: 800;
  letter-spacing: -0.04em;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #f5f5f7 0%, #86868b 50%, #f5f5f7 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientFlow 6s ease-in-out infinite;
}

@keyframes gradientFlow {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero__tagline {
  font-size: 28px;
  color: #86868b;
  font-weight: 400;
  max-width: 700px;
  padding: 0 24px;
  margin-bottom: 16px;
}

.hero__sub {
  font-size: 14px;
  color: #86868b;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 40px;
}

.hero__stats {
  display: flex;
  gap: 60px;
  margin-top: 60px;
}

.hero__stat {
  text-align: center;
}

.hero__stat-num {
  font-size: 56px;
  font-weight: 700;
  background: linear-gradient(135deg, #f5f5f7 0%, #86868b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.hero__stat-label {
  font-size: 14px;
  color: #86868b;
  margin-top: 8px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.hero__scroll-hint {
  position: absolute;
  bottom: 60px;
  left: 50%;
  transform: translateX(-50%);
  color: #86868b;
  font-size: 14px;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50% { transform: translateX(-50%) translateY(-12px); opacity: 1; }
}

/* ========== 简介 ========== */
.intro {
  max-width: 1000px;
  margin: 0 auto;
  padding: 120px 24px 60px;
  text-align: center;
}

.intro__title {
  font-size: 64px;
  font-weight: 700;
  margin-bottom: 40px;
  letter-spacing: -0.02em;
}

.intro__text {
  font-size: 21px;
  line-height: 1.6;
  color: #d2d2d7;
  max-width: 800px;
  margin: 0 auto;
}

/* ========== 轮播区域 — 全宽无框 ========== */
.carousel-section {
  position: relative;
  padding: 0 0 80px;
}

.carousel {
  position: relative;
  overflow: hidden;
  min-height: 500px;
}

.carousel__track {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

/* ========== 轮播按钮 ========== */
.carousel__btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(28, 28, 30, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: #f5f5f7;
  font-size: 32px;
  font-weight: 300;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  line-height: 1;
  font-family: -apple-system, "SF Pro Display", sans-serif;
}

.carousel__btn:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-50%) scale(1.08);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.carousel__btn--prev { left: 16px; }
.carousel__btn--next { right: 16px; }

/* ========== 轮播底部导航 ========== */
.carousel__dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 40px;
  padding: 0 24px;
}

.carousel__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #3a3a3c;
  border: none;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
  padding: 0;
}

.carousel__dot:hover {
  background: #86868b;
}

.carousel__dot.active {
  width: 28px;
  border-radius: 20px;
  background: var(--theme-color, #2997ff);
  box-shadow: 0 0 10px var(--theme-color, rgba(41, 151, 255, 0.4));
}

/* ========== 成员名导航行 ========== */
.carousel__nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
  padding: 0 24px;
}

.carousel-nav__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 100px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  font-size: 14px;
  font-weight: 500;
  color: #86868b;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  font-family: inherit;
  white-space: nowrap;
}

.carousel-nav__item:hover {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}

.carousel-nav__item.active {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--theme-color, #2997ff);
  box-shadow: 0 0 16px var(--theme-color, rgba(41, 151, 255, 0.25));
}

.carousel-nav__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3a3a3c;
  flex-shrink: 0;
  transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.carousel-nav__item.active .carousel-nav__dot {
  background: var(--theme-color, #2997ff);
  box-shadow: 0 0 8px var(--theme-color, rgba(41, 151, 255, 0.5));
}

.carousel-nav__name {
  font-size: 14px;
}

/* ========== 计数器 ========== */
.carousel__counter {
  text-align: center;
  margin-top: 12px;
  font-size: 14px;
  color: #86868b;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.1em;
}

/* ========== 成员幻灯片 ========== */
.member {
  min-width: 100%;
  padding: 60px 80px;
  display: flex;
  align-items: center;
  gap: 80px;
  position: relative;
}

.member:nth-child(even) {
  flex-direction: row-reverse;
}

/* 顶部主题色边线 */
.member::before {
  content: '';
  position: absolute;
  top: 0;
  left: 80px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--theme-color, #2997ff) 0%, transparent 100%);
  transition: width 1.5s ease-out 0.3s;
}

.member.revealed::before {
  width: 200px;
}

/* === 四向填充动画 === */
.member__avatar-wrap {
  position: relative;
  flex-shrink: 0;
  transform: translateX(-80px);
  opacity: 0;
  transition: transform 0.8s cubic-bezier(0.22, 0.61, 0.36, 1),
              opacity 0.6s ease;
}

.member.revealed .member__avatar-wrap {
  transform: translateX(0);
  opacity: 1;
}

.member__name {
  font-size: 64px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #f5f5f7 0%, var(--theme-color, #86868b) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transform: translateY(-50px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.1s,
              opacity 0.5s ease 0.1s;
}

.member.revealed .member__name {
  transform: translateY(0);
  opacity: 1;
}

.member__count {
  font-size: 14px;
  color: #86868b;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  transform: translateY(-30px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.15s,
              opacity 0.5s ease 0.15s;
}

.member.revealed .member__count {
  transform: translateY(0);
  opacity: 1;
}

.member__count strong {
  color: var(--theme-color, #f5f5f7);
  font-weight: 700;
  font-size: 18px;
  margin-right: 4px;
}

.member__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 28px;
  transform: translateX(80px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.2s,
              opacity 0.5s ease 0.2s;
}

.member.revealed .member__tags {
  transform: translateX(0);
  opacity: 1;
}

.member__style {
  font-size: 18px;
  color: var(--theme-color, #2997ff);
  margin-bottom: 20px;
  font-style: italic;
  font-weight: 500;
  transform: translateX(80px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.25s,
              opacity 0.5s ease 0.25s;
}

.member.revealed .member__style {
  transform: translateX(0);
  opacity: 1;
}

.member__bio {
  font-size: 19px;
  line-height: 1.75;
  color: #d2d2d7;
  margin-bottom: 36px;
  transform: translateX(80px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.3s,
              opacity 0.5s ease 0.3s;
}

.member.revealed .member__bio {
  transform: translateX(0);
  opacity: 1;
}

.member__slang {
  margin-bottom: 36px;
  padding: 24px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--theme-color, #2997ff);
  transform: translateY(50px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.35s,
              opacity 0.5s ease 0.35s;
}

.member.revealed .member__slang {
  transform: translateY(0);
  opacity: 1;
}

.member__quote {
  font-size: 32px;
  font-style: italic;
  color: #f5f5f7;
  padding-left: 28px;
  border-left: 3px solid var(--theme-color, #2997ff);
  line-height: 1.4;
  position: relative;
  margin-top: 40px;
  font-weight: 500;
  transform: translateY(50px);
  opacity: 0;
  transition: transform 0.7s cubic-bezier(0.22, 0.61, 0.36, 1) 0.4s,
              opacity 0.5s ease 0.4s;
}

.member.revealed .member__quote {
  transform: translateY(0);
  opacity: 1;
}

.member__quote::before {
  content: '"';
  position: absolute;
  left: 12px;
  top: -16px;
  font-size: 60px;
  color: var(--theme-color, #2997ff);
  opacity: 0.3;
  font-family: Georgia, serif;
  line-height: 1;
}

/* ========== 头像样式 ========== */
.member__avatar {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  background: #1c1c1e;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.6),
    0 0 0 1px rgba(255, 255, 255, 0.05);
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.5s ease;
  position: relative;
  z-index: 2;
}

.member__avatar::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, var(--theme-color, #2997ff) 0%, transparent 50%, var(--theme-color, #2997ff) 100%);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.5s ease;
  animation: rotate 8s linear infinite;
}

.member__avatar:hover {
  transform: scale(1.05);
  box-shadow:
    0 40px 100px rgba(0, 0, 0, 0.8),
    0 0 60px var(--theme-color, rgba(41, 151, 255, 0.3));
}

.member__avatar:hover::after {
  opacity: 0.6;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.member__avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.member__avatar-glow {
  position: absolute;
  inset: -40px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--theme-color, #2997ff) 0%, transparent 70%);
  opacity: 0;
  z-index: 0;
  filter: blur(40px);
  transition: opacity 0.6s ease;
  pointer-events: none;
}

.member__avatar-wrap:hover .member__avatar-glow {
  opacity: 0.3;
}

.member__content {
  flex: 1;
  min-width: 0;
}

.member__tag {
  padding: 8px 18px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border-radius: 100px;
  font-size: 14px;
  color: #d2d2d7;
  letter-spacing: 0.05em;
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 0.3s ease;
}

.member__tag:hover {
  background: var(--theme-color, #2997ff);
  color: #000;
  border-color: var(--theme-color, #2997ff);
  transform: translateY(-2px);
}

/* ========== 个人黑话词典 ========== */
.member__slang-title {
  font-size: 13px;
  color: #86868b;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 18px;
  font-weight: 600;
}

.slang-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.slang-tag {
  position: relative;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  font-size: 14px;
  color: #f5f5f7;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  font-weight: 500;
}

.slang-tag:hover {
  background: var(--theme-color, #2997ff);
  color: #000;
  border-color: var(--theme-color, #2997ff);
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 24px var(--theme-color, rgba(41, 151, 255, 0.4));
}

.slang-tag::before {
  content: '"' attr(data-word) '"';
  font-weight: 700;
}

.slang-tag::after {
  content: attr(data-meaning);
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: rgba(28, 28, 30, 0.98);
  backdrop-filter: blur(20px);
  color: #f5f5f7;
  padding: 10px 16px;
  border-radius: 12px;
  font-size: 13px;
  white-space: nowrap;
  max-width: 280px;
  white-space: normal;
  width: max-content;
  text-align: center;
  pointer-events: none;
  opacity: 0;
  transition: all 0.3s ease;
  border: 1px solid var(--theme-color, rgba(41, 151, 255, 0.3));
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  z-index: 10;
  font-weight: 400;
}

.slang-tag:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ========== 数据脚注 ========== */
.footer-stats {
  max-width: 1000px;
  margin: 0 auto;
  padding: 120px 24px 60px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-stats__title {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 80px;
  letter-spacing: -0.02em;
}

.footer-stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 80px;
}

.footer-stats__item {
  font-size: 16px;
  color: #86868b;
  padding: 32px 20px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all 0.4s ease;
}

.footer-stats__item:hover {
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.15);
}

.footer-stats__num {
  font-size: 56px;
  font-weight: 800;
  color: #f5f5f7;
  margin-bottom: 12px;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(135deg, #f5f5f7 0%, #86868b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========== 彩蛋 footer ========== */
.footer-easter {
  text-align: center;
  padding: 80px 24px 100px;
  color: #86868b;
  font-size: 14px;
  position: relative;
}

.footer-easter__quote {
  font-size: 24px;
  font-style: italic;
  color: #d2d2d7;
  margin-bottom: 16px;
}

/* ========== 响应式 ========== */
@media (max-width: 968px) {
  .hero__logo { font-size: 72px; }
  .hero__stats { gap: 32px; }
  .hero__stat-num { font-size: 40px; }
  .intro__title { font-size: 40px; }
  .intro__text { font-size: 18px; }

  .carousel {
    min-height: auto;
  }

  .carousel__btn {
    width: 40px;
    height: 40px;
    font-size: 24px;
  }

  .carousel__btn--prev { left: 8px; }
  .carousel__btn--next { right: 8px; }

  .carousel__nav {
    gap: 6px;
    padding: 0 12px;
  }

  .carousel-nav__item {
    padding: 6px 12px;
    font-size: 13px;
    gap: 6px;
  }

  .carousel-nav__name {
    font-size: 13px;
  }

  .carousel__dots {
    margin-top: 28px;
  }

  .member {
    flex-direction: column !important;
    padding: 48px 28px;
    gap: 32px;
    text-align: center;
  }

  .member::before {
    left: 28px;
  }

  .member__avatar { width: 200px; height: 200px; }
  .member__name { font-size: 36px; }
  .member__tags { justify-content: center; }
  .member__quote { font-size: 20px; padding-left: 16px; }
  .member__slang { padding: 16px; }
  .member__bio { font-size: 16px; }

  /* 移动端简化动画 */
  .member__avatar-wrap {
    transform: translateY(40px);
  }
  .member.revealed .member__avatar-wrap {
    transform: translateY(0);
  }
  .member__tags, .member__style, .member__bio {
    transform: translateY(40px);
  }
  .member.revealed .member__tags,
  .member.revealed .member__style,
  .member.revealed .member__bio {
    transform: translateY(0);
  }

  .slang-tag::after { left: 0; transform: translateX(0) translateY(8px); }
  .slang-tag:hover::after { transform: translateX(0) translateY(0); }
}

@media (max-width: 480px) {
  .hero__logo { font-size: 56px; }
  .hero__tagline { font-size: 18px; }
  .hero__stats { flex-direction: column; gap: 24px; }
  .hero__stat-num { font-size: 48px; }
  .intro { padding: 100px 24px 40px; }
  .intro__title { font-size: 32px; }

  .carousel__btn {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }

  .carousel__btn--prev { left: 4px; }
  .carousel__btn--next { right: 4px; }

  .carousel__nav {
    gap: 4px;
    padding: 0 8px;
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .carousel__nav::-webkit-scrollbar { display: none; }

  .carousel-nav__item {
    padding: 6px 10px;
    font-size: 12px;
    gap: 5px;
    flex-shrink: 0;
  }

  .carousel-nav__name {
    font-size: 12px;
  }

  .member {
    padding: 36px 18px;
    gap: 24px;
  }

  .member__avatar { width: 160px; height: 160px; }
  .member__name { font-size: 30px; }
  .member__bio { font-size: 15px; }
  .member__quote { font-size: 18px; margin-top: 24px; }
  .member__slang { padding: 14px; }

  .carousel__dots { gap: 8px; margin-top: 20px; }
  .carousel__dot { width: 8px; height: 8px; }
  .carousel__dot.active { width: 22px; }

  .footer-stats__title { font-size: 32px; }
  .footer-stats__num { font-size: 40px; }
  .footer-stats__grid { gap: 20px; }
}