/* speedtest-cf 前端样式：fast.com 风格极简白底大数字 */

/* ---------- 主题变量 token：亮/暗两套 ---------- */

:root {
  /* Material Design 标准运动曲线，所有过渡复用 */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 200ms;
  --dur-base: 250ms;

  /* 亮色（默认） */
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #f7f7f7;
  --bg-hover: #f2f2f2;
  --text: #181818;
  --text-muted: #6b6b6b;
  --text-dim: #9a9a9a;
  --border: #e8e8e8;
  --border-soft: #f0f0f0;
  --accent: #181818;
  /* v32: 状态透明度（黑白色调用 opacity 区分） */
  --opacity-testing: 0.3;
  --opacity-finished: 1;
  --opacity-failed: 0.5;
}

/* 手动覆盖（用户点按钮切换锁定到 dark） */
:root[data-theme="dark"] {
  --bg: #000000;
  --opacity-testing: 0.4; /* 暗模式提高对比度 */
  --bg-card: #0a0a0a;
  --bg-elevated: #141414;
  --bg-hover: #1a1a1a;
  --text: #f5f5f5;
  --text-muted: #a0a0a0;
  --text-dim: #707070;
  --border: #1f1f1f;
  --border-soft: #161616;
  --accent: #f5f5f5;

}

/* 手动覆盖（用户点按钮切换锁定到 light，显式与默认 :root 一致） */
:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-card: #ffffff;
  --bg-elevated: #f7f7f7;
  --bg-hover: #f2f2f2;
  --text: #181818;
  --text-muted: #6b6b6b;
  --text-dim: #9a9a9a;
  --border: #e8e8e8;
  --border-soft: #f0f0f0;
  --accent: #181818;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100vh; /* 改 height:100% → min-height:100vh，内容超出可滚动 */
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue",
    "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start; /* 改 center → flex-start，内容从顶部开始 */
  min-height: 100vh;
  padding-top: 24px; /* 顶部留 24px 空白 */
  padding-bottom: 48px;
  position: relative;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 主区 flex 布局：大数字居中 + IP banner 右侧 ---------- */

.layout-main {
  display: flex;
  flex-direction: column; /* v26: 改垂直流，桌面移动一致，减少响应式复杂度 */
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex: 1 1 auto;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1rem;
}

.speed-area {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  align-self: center;
  position: relative;
  width: 100%;
}

/* ---------- 顶部 IP banner（常驻显示，右侧） ---------- */

.ip-banner {
  flex: 0 0 auto;
  max-width: 480px;
  width: 100%;
  margin: 0;
  padding: 0;
  text-align: center;
  font-size: 13px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
  opacity: 0;
  transition: opacity var(--dur-fast) var(--ease-standard);
}

/* 加载完成后 fade in（由 JS 在数据到达时加 .loaded） */
.ip-banner.loaded {
  opacity: 1;
}

.ip-flag-line,
.ip-score-line,
.ip-asn-line {
  min-height: 20px;
  line-height: 1.5;
  word-break: break-word;
  margin-bottom: 4px;
}

.ip-asn-line:last-child {
  margin-bottom: 0;
}

.ip-flag-line {
  display: block;
  text-align: center;
  font-weight: 500;
  min-width: 280px;
}

.ip-flag-text {
  flex: 1 1 auto;
  transition: opacity var(--dur-fast) var(--ease-standard);
}
.ip-flag-text.ip-switching {
  opacity: 0.3;
}
:root[data-theme="dark"] .ip-flag-text.ip-switching {
  opacity: 0.5;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .ip-flag-text.ip-switching {
    opacity: 0.5;
  }
}
.ip-flag-text-fake-placeholder {
  flex: 1 1 auto;
  min-width: 0;
}

/* 眼睛切换按钮 */
.ip-toggle-btn {
  flex: 0 0 auto;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-muted);
  transform: translateZ(0);
  color: var(--text-muted);
  padding: 2px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  line-height: 0;
  transition: color var(--dur-fast) var(--ease-standard),
    background var(--dur-fast) var(--ease-standard);
}

.ip-toggle-btn:hover {
  color: var(--text);
  background: var(--bg-hover);
}

.ip-toggle-btn:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 1px;
}

.ip-toggle-btn svg {
  display: inline-block;
}

/* 眼睛图标切换：默认显示闭眼，revealed 显示睁眼（用 .revealed 覆盖默认，不依赖 :not） */
/* v29: 眼睛按钮移到 top-bar，图标切换跟着 #ip-toggle-btn 的 aria-pressed 状态 */
#ip-toggle-btn .eye-open { display: none; }
#ip-toggle-btn .eye-closed { display: inline-block; }
#ip-toggle-btn[aria-pressed="true"] .eye-open { display: inline-block; }
#ip-toggle-btn[aria-pressed="true"] .eye-closed { display: none; }

.ip-score-line,
.ip-asn-line {
  color: var(--text-muted);
}

/* ---------- 大数字 + 单位 + sparkline（结束后 fade out 让位卡片） ---------- */

.speed-number {
  font-size: clamp(72px, 18vw, 240px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  text-align: center;
  max-width: 95vw;
  overflow: hidden;
}

.speed-unit {
  font-size: clamp(16px, 2.5vw, 28px);
  color: var(--text-muted);
  margin-top: 6px;
  letter-spacing: 1px;
}

/* 大数字 / 单位 / sparkline 切换过渡：.testing 显示，.finished 隐藏让位卡片 */
.speed-area.testing .speed-number,
.speed-area.testing .speed-unit,
.speed-area.testing .sparkline {
  opacity: 1;
  transform: scale(1);
  transition: opacity var(--dur-base) var(--ease-standard),
    transform var(--dur-base) var(--ease-standard);
  transform-origin: center center;
}

/* v24: 测速完成大数字 + unit 保持显示并整体上移，sparkline 隐藏让位卡片 */
.speed-area.finished {
  transform: translateY(-12px);
  transition: transform var(--dur-base) var(--ease-standard);
}
.speed-area.finished .speed-number,
.speed-area.finished .speed-unit {
  opacity: 1;
  transform: scale(1);
}
.speed-area.finished .sparkline {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
  height: 0;
  margin-top: 0;
  overflow: hidden;
  transition: opacity var(--dur-base) var(--ease-standard),
    transform var(--dur-base) var(--ease-standard),
    height var(--dur-base) var(--ease-standard),
    margin-top var(--dur-base) var(--ease-standard);
}

/* ---------- sparkline 折线图（大数字下方） ---------- */

.sparkline {
  display: block;
  width: 360px;
  max-width: 100%;
  height: 60px;
  margin: 12px auto 0;
}

/* 失败态 */
.speed-number.failed {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--text);
}

.retry-btn {
  margin-top: 24px;
  padding: 10px 28px;
  font-size: 15px;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--text);
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.retry-btn:hover {
  background: var(--text);
  color: var(--bg);
}

/* ---------- 测速结果卡片（结束后切换显示） ---------- */

.result-card {
  background: color-mix(in srgb, var(--bg-card) 80%, transparent);
  backdrop-filter: blur(10px) saturate(180%);
  -webkit-backdrop-filter: blur(10px) saturate(180%);
  border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
  border-radius: 12px;
  padding: 16px 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
  min-width: 240px;
  text-align: center;
}

/* 默认隐藏；.testing 期间也不显示；.finished 时 display:block + 滑入动画 */
#result-card {
  display: none;
}

#result-card[hidden] {
  display: none;
}

.speed-area.finished #result-card {
  display: block;
  margin-top: 20px;
  animation: slideInUp var(--dur-base) var(--ease-standard) 150ms both;
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(12px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* v25: 删除 .result-main/.result-avg/.result-unit/.result-label（大数字已在外层显示均值） */

.result-meta {
  margin-top: 0;
  border-top: none;
  padding-top: 0;
}

.result-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  font-size: 14px;
  color: var(--text-muted);
}

.result-meta-label {
  color: var(--text-dim);
  font-size: 13px;
  letter-spacing: 0.5px;
  flex: 0 0 auto;
}

.result-meta-value {
  font-size: 24px;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  text-align: right;
}

@keyframes slideInDown {
  from { opacity: 0; transform: translateY(-20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ---------- 展开详情 ---------- */

.more-toggle-wrap {
  width: 100%;
  text-align: center;
  padding: 16px 0 8px;
}

.more-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 13px;
  letter-spacing: 0.6px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
}

.more-toggle:hover {
  color: var(--text);
}

.more-toggle .more-arrow {
  display: inline-block;
  font-size: 10px;
  transition: transform var(--dur-base) var(--ease-standard);
}

.more-toggle[aria-expanded="true"] .more-arrow {
  transform: rotate(180deg);
}

/* 详情面板：max-height + opacity 折叠动画（class 控制，不用 hidden）
   max-height 取较大值覆盖绝大多数内容量；移动端在 @media 进一步放大到 3000px。
   transition 用 350ms（比 --dur-base 250ms 略长），大展开动画不突兀。 */
.more-info {
  width: 100%;
  max-width: 520px;
  margin: 0 auto;
  padding: 0 24px;
  display: block;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 350ms var(--ease-standard),
    opacity 350ms var(--ease-standard),
    padding 350ms var(--ease-standard);
}

.more-info.open {
  max-height: 2000px;
  opacity: 1;
  padding: 8px 24px 48px;
  background: color-mix(in srgb, var(--bg-card) 70%, transparent);
  backdrop-filter: blur(10px) saturate(180%);
  -webkit-backdrop-filter: blur(10px) saturate(180%);
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}

/* 详情面板分 3 段（速度 / 网络 / 历史测速） */
.info-section {
  padding: 4px 0;
}

.info-section + .info-section {
  border-top: 1px solid var(--border);
  margin-top: 4px;
  padding-top: 8px;
}

.info-section-title {
  font-size: 12px;
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: 0.4px;
  margin: 0 0 4px;
  padding: 8px 0;
  text-align: left;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-soft);
  font-size: 14px;
}

/* 每段最后一行去掉细分割线，段间用主分割线 */
.info-section .info-row:last-child {
  border-bottom: none;
}

.info-label {
  color: var(--text-muted);
  flex: 0 0 auto;
  text-align: left;
}

.info-value {
  color: var(--text);
  text-align: right;
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

/* ---------- 历史测速列表 ---------- */

.history-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.history-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  font-size: 12px;
  border-bottom: 1px solid var(--border-soft);
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-standard);
  flex-wrap: wrap;
}

.history-row:last-child {
  border-bottom: none;
}

.history-row:hover {
  background: var(--bg-elevated);
}

.history-time {
  color: var(--text-dim);
  min-width: 40px;
  font-variant-numeric: tabular-nums;
}

.history-flag {
  font-size: 14px;
  flex: 0 0 auto;
}

.history-ip {
  color: var(--text-muted);
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.history-speed {
  color: var(--text);
  font-variant-numeric: tabular-nums;
  min-width: 60px;
  text-align: right;
}

.history-detail {
  width: 100%;
  padding: 0 0 0 48px;
  font-size: 11px;
  color: var(--text-dim);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 300ms var(--ease-standard),
    opacity 300ms var(--ease-standard),
    padding 300ms var(--ease-standard);
}

.history-row.expanded .history-detail {
  max-height: 80px;
  opacity: 1;
  padding: 4px 0 8px 48px;
}

.history-empty {
  color: var(--text-dim);
  font-size: 12px;
  padding: 8px 0;
  text-align: center;
}

/* ---------- 右上角按钮组：设置齿轮 + 主题切换 ---------- */

.top-bar {
  position: absolute;
  top: 18px;
  right: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  z-index: 20;
}

.theme-toggle,
.settings-toggle {
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 22px;
  color: var(--text-muted);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
  transform: translateZ(0); /* 触发 GPU 层，防止高 DPI 下绝对定位元素模糊 */
  position: relative;
}

.theme-toggle:hover,
.settings-toggle:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.theme-toggle:focus-visible,
.settings-toggle:focus-visible {
  outline: 2px solid var(--text);
  outline-offset: 1px;
}

/* 主题切换按钮图标显隐：默认显示太阳（亮色），暗色显示月亮 */
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: inline-block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: inline-block; }
}

.gear-icon {
  display: inline-block;
  transition: transform 0.4s var(--ease-standard);
}

.settings-toggle:hover .gear-icon {
  transform: rotate(60deg);
}

/* 设置面板：opacity + translateY 折叠动画（class 控制，绝对定位不挤布局） */
.settings-panel {
  position: absolute;
  top: 64px;
  right: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
  padding: 18px 20px;
  width: 280px;
  z-index: 30;
  display: block;
  opacity: 0;
  transform: translateY(-12px);
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-standard),
    transform var(--dur-fast) var(--ease-standard);
}

.settings-panel.open {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.settings-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 13px;
}

.settings-row label {
  flex: 0 0 auto;
  color: var(--text);
}

.settings-row input {
  flex: 1 1 auto;
  width: 60px;
  padding: 6px 8px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 4px;
  text-align: center;
  font-variant-numeric: tabular-nums;
  background: var(--bg);
  color: var(--text);
}

.settings-row input:focus {
  outline: none;
  border-color: var(--text);
}

.settings-row .hint {
  color: var(--text-dim);
  font-size: 11px;
  flex: 0 0 auto;
}

.save-btn {
  width: 100%;
  margin-top: 6px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--bg);
  background: var(--text);
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.15s;
}

.save-btn:hover {
  opacity: 0.85;
}

/* ---------- 响应式 ---------- */

@media (max-width: 767px) {
  .layout-main {
    gap: 16px;
  }
  .ip-banner {
    max-width: 100%;
    text-align: center;
    font-size: 12px;
  }
  .ip-flag-line,
  .ip-score-line,
  .ip-asn-line {
    min-height: 18px;
  }
}

@media (max-width: 600px) {
  .speed-number {
    font-size: clamp(56px, 16vw, 96px);
  }
  .speed-unit {
    font-size: clamp(14px, 3vw, 18px);
  }
  .speed-number.failed {
    font-size: 28px;
  }
  .result-avg {
    font-size: 64px;
  }
  .settings-panel {
    width: calc(100vw - 36px);
    right: 18px;
  }
  .more-info.open {
    padding-left: 16px;
    padding-right: 16px;
    max-height: 3000px;
  }
}

/* ---------- 测速完成时整体上移，减少顶部空余（v1.8） ---------- */
body.finished {
  padding-top: 8px;
}
body.finished .layout-main {
  padding-top: 0.5rem;
}

/* v26: 暗黑模式卡片发光边框替代阴影 */
:root[data-theme="dark"] .result-card,
:root[data-theme="dark"] .more-info.open {
  box-shadow: 0 0 24px rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.1);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .result-card,
  :root:not([data-theme="light"]) .more-info.open {
    box-shadow: 0 0 24px rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
  }
}

/* v26: 测速中大数字蓝色 pulse 状态色 */
.speed-area.testing .speed-number,
.speed-area.testing .speed-unit {
  color: var(--text);
  opacity: var(--opacity-testing);
}
.speed-area.testing .speed-number {
  animation: speedPulse 2s ease-in-out infinite;
}
@keyframes speedPulse {
  0%, 100% { opacity: var(--opacity-testing); }
  50% { opacity: calc(var(--opacity-testing) + 0.2); }
}
.speed-area.finished .speed-number {
  color: var(--text);
  opacity: var(--opacity-finished);
  animation: none;
  transition: opacity 400ms var(--ease-standard);
}
.speed-number.failed {
  color: var(--text-dim) !important;
  opacity: 1 !important;
  animation: none !important;
}

/* v27: 主题 radio 样式 */
.settings-row-theme {
  display: block;
}
.settings-row-theme > label {
  display: block;
  margin-bottom: 6px;
}
.radio-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.radio-label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid var(--border-soft);
  transition: background var(--dur-fast) var(--ease-standard), border-color var(--dur-fast) var(--ease-standard);
}
.radio-label:hover {
  background: var(--bg-hover);
  border-color: var(--border);
}
.radio-label input[type="radio"] {
  margin: 0;
  cursor: pointer;
  accent-color: var(--text);
}
.radio-label:has(input[type="radio"]:checked) {
  background: var(--bg-hover);
  border-color: var(--text-muted);
  color: var(--text);
}

/* v40: 删除 v39 风险徽章 + 分组标题样式 */