/* ============================================================
 * 年龄验证（Age Gate）样式
 * 从 partials/age_verification.html 内联 <style> 中抽离
 * 必须同步加载，避免 FOUC（页面闪烁）
 * =========================================================== */

#age-verification-overlay {
  position: fixed;
  inset: 0;
  z-index: 10500;
  display: grid;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(0, 255, 136, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 90%, rgba(0, 212, 255, 0.06) 0%, transparent 50%),
    rgba(5, 15, 28, 0.88);
  backdrop-filter: blur(24px) saturate(0.6);
  -webkit-backdrop-filter: blur(24px) saturate(0.6);
  overscroll-behavior: none;
  touch-action: none;
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
#age-verification-overlay:not([hidden]) {
  opacity: 1;
}
#age-verification-overlay[hidden] { display: none; }

.age-verification-card {
  position: relative;
  width: min(100%, 480px);
  max-height: calc(100vh - 48px);
  overflow-y: auto;
  overscroll-behavior: contain;
  touch-action: auto;
  padding: 36px 32px 32px;
  color: #f8fbff;
  background: linear-gradient(145deg,
    rgba(23, 45, 72, 0.95) 0%,
    rgba(15, 30, 50, 0.98) 50%,
    rgba(10, 22, 40, 0.98) 100%);
  border: 1px solid rgba(0, 255, 136, 0.25);
  border-radius: 24px;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04) inset,
    0 0 60px rgba(0, 255, 136, 0.08),
    0 32px 80px rgba(0, 0, 0, 0.6);
  text-align: center;
  transform: translateY(20px) scale(0.96);
  opacity: 0;
  transition:
    transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.4s ease-out;
  transition-delay: 0.1s;
}
#age-verification-overlay:not([hidden]) .age-verification-card {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* 发光装饰边框 */
.age-verification-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(0, 255, 136, 0.6) 50%,
    transparent 100%);
  border-radius: 1px;
}

/* 角落装饰 */
.age-verification-card::after {
  content: '';
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  border-top: 1px solid rgba(0, 255, 136, 0.3);
  border-right: 1px solid rgba(0, 255, 136, 0.3);
  border-top-right-radius: 8px;
  pointer-events: none;
}

.age-verification-topbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 24px;
  position: relative;
}

.age-verification-languages {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 999px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2) inset;
}

.age-verification-language {
  position: relative;
  min-height: 28px !important;
  border: 0;
  border-radius: 999px;
  padding: 4px 12px !important;
  color: #8fa4bd;
  background: transparent;
  font: inherit;
  font-size: 12px !important;
  line-height: 1.2 !important;
  font-weight: 600;
  cursor: pointer;
  /* 仅过渡 color（paint 层），避免 all 触发不必要的重排 */
  transition: color 0.25s ease;
  letter-spacing: 0.02em;
  /* 提升到合成层，hover 状态变化更流畅 */
  will-change: transform;
}

/* active 状态背景与发光 — 使用 ::before 伪元素，通过 opacity 过渡 */
.age-verification-language::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(145deg, #00ff88 0%, #00d978 100%);
  box-shadow:
    0 2px 8px rgba(0, 255, 136, 0.3),
    0 0 0 1px rgba(0, 255, 136, 0.4);
  opacity: 0;
  /* 合成属性过渡，GPU 加速 */
  transition: opacity 0.25s ease;
  pointer-events: none;
  z-index: -1;
}

.age-verification-language:hover {
  color: #c9d6e5;
}

.age-verification-language.active {
  color: #052116;
}

.age-verification-language.active::before {
  opacity: 1;
}

.age-verification-language:focus-visible {
  outline: 2px solid #8be9ff;
  outline-offset: 2px;
}

/* 标题区域 */
.age-verification-header {
  margin-bottom: 24px;
  position: relative;
}

.age-verification-icon {
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.age-verification-icon img {
  height: 44px;
  width: auto;
  display: block;
  filter: brightness(0) invert(1);
}

.age-verification-card h2 {
  margin: 0 0 12px;
  color: #fff;
  font-size: 26px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  background: linear-gradient(180deg, #ffffff 0%, #c9d6e5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.age-verification-card p {
  margin: 0;
  color: #9cb3cc;
  font-size: 15px;
  line-height: 1.7;
  max-width: 340px;
  margin-left: auto;
  margin-right: auto;
}

/* 分隔装饰线 */
.age-verification-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 24px;
}

.age-verification-divider::before,
.age-verification-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 100%);
}

.age-verification-divider span {
  font-size: 11px;
  font-weight: 600;
  color: #6b829d;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.age-verification-actions {
  display: grid;
  gap: 12px;
}

.age-verification-actions button {
  position: relative;
  width: 100%;
  min-height: 50px;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 13px 20px;
  font: inherit;
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  overflow: hidden;
  /* 仅过渡合成属性 transform 和 color（paint），移除 all */
  transition:
    transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  /* 提升到独立合成层，启用 GPU 加速 */
  will-change: transform;
}

/* ===== 确认按钮（主按钮） ===== */

.age-verification-confirm {
  color: #052116 !important;
  border-color: transparent !important;
  z-index: 0;
}

/* 基础背景层 — 使用 ::before 承载渐变背景与内阴影 */
.age-verification-confirm::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(145deg, #00ff88 0%, #00d978 50%, #00bf69 100%);
  box-shadow:
    0 4px 20px rgba(0, 255, 136, 0.3),
    0 0 0 1px rgba(0, 255, 136, 0.2) inset;
  z-index: -2;
  pointer-events: none;
}

/* hover 背景层 — 使用 ::after 承载更亮的渐变，通过 opacity 过渡 */
.age-verification-confirm::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(145deg, #22ff99 0%, #00ff88 50%, #00d978 100%);
  box-shadow:
    0 6px 28px rgba(0, 255, 136, 0.45),
    0 0 0 1px rgba(0, 255, 136, 0.3) inset;
  opacity: 0;
  /* 合成属性：opacity 走 GPU 合成层，零重排零重绘 */
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: -1;
  pointer-events: none;
}

/* 闪光扫光效果 — 单独用一个 span 或伪元素，通过 transform 动画 */
.age-verification-confirm .shine-effect {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 100%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
  pointer-events: none;
  z-index: 1;
}

.age-verification-confirm:hover .shine-effect,
.age-verification-confirm:focus-visible .shine-effect {
  transform: translateX(100%);
}

.age-verification-confirm:hover,
.age-verification-confirm:focus-visible {
  color: #02170f !important;
  transform: translateY(-1px);
}

/* hover 时显示更亮的背景层（opacity 过渡，GPU 加速） */
.age-verification-confirm:hover::after,
.age-verification-confirm:focus-visible::after {
  opacity: 1;
}

.age-verification-confirm:active {
  transform: translateY(0);
}

/* active 状态减弱阴影 — 通过 ::after 的 opacity 微调即可，无需额外属性 */

/* ===== 离开按钮（次按钮） ===== */

.age-verification-leave {
  color: #c9d6e5 !important;
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.15) !important;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* hover 状态的边框与背景通过 ::before 伪元素 opacity 过渡 */
.age-verification-leave::before {
  content: '';
  position: absolute;
  inset: -1px; /* 覆盖 border 区域 */
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.25);
  opacity: 0;
  transition: opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  z-index: -1;
}

.age-verification-leave:hover,
.age-verification-leave:focus-visible {
  color: #fff !important;
  transform: translateY(-1px);
}

.age-verification-leave:hover::before,
.age-verification-leave:focus-visible::before {
  opacity: 1;
}

.age-verification-leave:active {
  transform: translateY(0);
}

.age-verification-actions button:focus-visible {
  outline: 2px solid #8be9ff;
  outline-offset: 3px;
}

/* 底部提示 */
.age-verification-footer {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  color: #5a728d;
}

.age-verification-footer svg {
  width: 14px;
  height: 14px;
  stroke: currentColor;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

html.age-gate-locked,
body.age-gate-locked {
  overflow: hidden !important;
  overscroll-behavior: none !important;
}

/* 响应式调整 */
@media (max-width: 480px) {
  .age-verification-card {
    padding: 28px 22px 24px;
    border-radius: 20px;
  }
  .age-verification-topbar {
    margin-bottom: 24px;
  }
  .age-verification-logo {
    width: 170px;
    height: 62px;
    padding: 8px 12px;
  }
  .age-verification-card h2 {
    font-size: 22px;
  }
  .age-verification-icon {
    margin-bottom: 14px;
  }
  .age-verification-icon img {
    height: 36px;
  }
}