/* ==========================================================================
   lxhcool Personal Website — Inspired by https://www.bobby.so/ (Dead Simple Sites)
   ========================================================================== */

:root,
[data-theme="light"] {
  --bg: #ffffff;
  --text: #171717;
  --muted: #808080;
  --timeline-dot: #c8c8c4;
  --icon-border: rgba(0, 0, 0, 0.06);
  --card-border: #e8e8e8;
  --card-bg: #f6f5f1;
  --hr-color: #eeeeee;
  --preview-shadow: 0 8px 28px rgb(0 0 0 / 8%);
  --modal-backdrop: rgb(0 0 0 / 28%);
}

[data-theme="dark"] {
  --bg: #0f0f0f;
  --text: #ededed;
  --muted: #828282;
  --timeline-dot: #484848;
  --icon-border: rgba(255, 255, 255, 0.08);
  --card-border: #262626;
  --card-bg: #171716;
  --hr-color: #242424;
  --preview-shadow: 0 12px 32px rgb(0 0 0 / 50%);
  --modal-backdrop: rgb(0 0 0 / 65%);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  transition: background-color 0.2s ease, color 0.2s ease;
}

body {
  margin: 0;
  padding: 60px 40px;
  color: var(--text);
  font: 400 0.875rem/23px "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
}

h1,
h2,
p {
  margin: 0;
  font: inherit;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

/* ==========================================================================
   Grok Bot 灵动弹簧大眼萌跟随头像 (零大图依赖，纯矢量纯代码秒开)
   ========================================================================== */
.avatar-blob-wrap {
  display: block;
  position: relative;
  width: 58px;
  height: 58px;
  margin: 0 0 18px 0;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#grok-avatar {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
  color: var(--grok-body-color, #161513);
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, 0.08));
  transition: color 240ms cubic-bezier(0.2, 0.8, 0.2, 1), filter 200ms ease;
}

[data-theme="dark"] #grok-avatar {
  color: var(--grok-body-color, #ededed);
  filter: drop-shadow(0 8px 18px rgba(255, 255, 255, 0.06));
}

#grok-face circle,
#grok-face rect {
  fill: var(--grok-eye-color, #ffffff);
  transition: fill 240ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* 深色模式默认眼睛反色为暗黑底色 */
[data-theme="dark"] #grok-face circle,
[data-theme="dark"] #grok-face rect {
  fill: var(--grok-eye-color, #161513);
}

.avatar-blob-wrap:hover #grok-avatar {
  filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.14));
}

[data-theme="dark"] .avatar-blob-wrap:hover #grok-avatar {
  filter: drop-shadow(0 10px 22px rgba(255, 255, 255, 0.12));
}

.occupation {
  margin-top: 2px;
  color: var(--muted);
}

/* ==========================================================================
   About Me & Links
   ========================================================================== */
.about-me {
  margin-top: 32px;
  line-height: 26px;
}

.about-me > p + p {
  margin-top: 16px;
}

.about-socials {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 18px;
}

.social-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  color: var(--muted);
  background: var(--card-bg);
  border: 1px solid var(--icon-border);
  text-decoration: none;
  transition: color 150ms ease, border-color 150ms ease, background-color 150ms ease, transform 180ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.social-icon-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--text) 22%, transparent);
  transform: translateY(-2px);
  text-decoration: none;
}

.social-icon-btn svg {
  display: block;
}

/* 微信 Hover 浮动二维码（免去点击） */
.wechat-hover-wrap {
  position: relative;
  display: inline-flex;
}

.wechat-popover {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%) translateY(4px);
  z-index: 50;
  width: 154px;
  padding: 10px 10px 8px;
  border-radius: 12px;
  background: var(--bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--preview-shadow);
  text-align: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms ease, transform 200ms cubic-bezier(0.2, 0.7, 0.2, 1), visibility 180ms;
}

/* 消除悬停时中间 10px 空隙导致的意外关闭（精准限制在间隙区域） */
.wechat-popover::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  height: 10px;
}

.wechat-hover-wrap:hover .wechat-popover {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}

.wechat-popover-img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  border-radius: 8px;
  background: #ffffff;
}

.wechat-popover-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  margin-top: 8px;
  line-height: 1;
}

.wechat-popover-id {
  font-size: 0.75rem;
  color: var(--muted);
  user-select: text;
}

.wechat-popover-id .wechat-code {
  color: var(--text);
  font-family: inherit;
}

.wechat-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  padding: 0;
  border-radius: 4px;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.wechat-copy-btn:hover {
  color: var(--text);
  background: var(--card-bg);
  border-color: var(--icon-border);
}

.wechat-copy-btn svg {
  display: block;
}

a,
.link-btn {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-decoration-color: color-mix(in srgb, currentColor 20%, transparent);
  text-underline-offset: 3px;
  transition: text-decoration-color 150ms ease, color 150ms ease;
}

a:hover,
.link-btn:hover {
  text-decoration-color: color-mix(in srgb, currentColor 45%, transparent);
}

a:focus-visible,
.link-btn:focus-visible {
  outline: 1px solid currentColor;
  outline-offset: 4px;
  border-radius: 1px;
}

/* ==========================================================================
   Timeline (Left vertical line, time above text)
   ========================================================================== */
.timeline {
  position: relative;
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
}

/* 贯穿时间轴最左侧的细线 */
.timeline::before {
  content: "";
  position: absolute;
  top: 7px;
  bottom: 8px;
  left: 3px;
  width: 1px;
  background: var(--card-border);
  pointer-events: none;
}

.timeline li {
  position: relative;
  padding-left: 24px;
  padding-bottom: 22px;
}

.timeline li:last-child {
  padding-bottom: 0;
}

/* 左侧轴线上的实心扁平圆点 */
.timeline-dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--timeline-dot);
  border: none;
  transition: transform 160ms cubic-bezier(0.2, 0.7, 0.2, 1),
              background-color 150ms ease;
}

.timeline li:hover .timeline-dot {
  background: var(--muted);
  transform: scale(1.3);
}

/* 时间在文案上面 */
.timeline-time {
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin-bottom: 4px;
}

/* 文案在时间下面 */
.timeline-content {
  margin: 0;
  line-height: 23px;
  color: var(--text);
}

.project-preview {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: min(300px, calc(100vw - 32px));
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  box-shadow: var(--preview-shadow);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(6px) scale(0.98);
  transition: opacity 180ms ease, transform 220ms cubic-bezier(0.2, 0.7, 0.2, 1), visibility 180ms;
}

.project-preview.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

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

/* ==========================================================================
   Studio (2-Column Project Showcase Grid)
   ========================================================================== */
.studio {
  margin-top: 48px;
}

.studio h2 {
  margin: 0 0 16px;
  font: inherit;
}

.studio-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.studio-card {
  display: block;
  min-width: 0;
  color: inherit;
  text-decoration: none;
}

.studio-card.is-clickable {
  cursor: pointer;
}

.studio-card.is-static {
  cursor: default;
}

.studio-card:hover {
  text-decoration: none;
}

.studio-preview {
  display: block;
  position: relative;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--card-border);
  border-radius: 14px;
  background: var(--card-bg);
  transition: border-color 180ms ease, transform 220ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.studio-card.is-clickable:hover .studio-preview {
  border-color: color-mix(in srgb, var(--text) 24%, transparent);
}

.studio-poster {
  display: block;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  transition: transform 320ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.studio-card.is-clickable:hover .studio-poster {
  transform: scale(1.03);
}

.studio-card.is-placeholder {
  cursor: default;
}

.studio-placeholder-preview {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
}

.placeholder-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--muted);
  user-select: none;
}

.placeholder-icon {
  opacity: 0.7;
  color: var(--muted);
  transform-origin: center center;
  transition: transform 320ms cubic-bezier(0.34, 1.56, 0.64, 1), opacity 200ms ease, color 200ms ease;
}

.studio-card.is-placeholder:hover .placeholder-icon {
  opacity: 1;
  color: var(--text);
  transform: translateY(-2px) scale(1.16) rotate(12deg);
}

.placeholder-tip {
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

.studio-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
}

.studio-card-title {
  display: block;
  text-decoration: none;
}

.studio-card-meta {
  color: var(--muted);
  font-size: 0.75rem;
}

@supports (corner-shape: superellipse(1.6)) {
  .project-preview,
  .studio-preview {
    corner-shape: superellipse(1.6);
  }
}

footer {
  margin-top: 56px;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 20px;
}

.local-conditions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 12px;
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
}

.theme-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 4px;
  color: var(--muted);
  vertical-align: middle;
  transition: color 150ms ease, transform 180ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.theme-toggle-icon:hover {
  color: var(--text);
  transform: scale(1.15);
}

.theme-toggle-icon:active {
  transform: scale(0.92);
}

.theme-toggle-icon svg {
  display: block;
}

/* ==========================================================================
   Staggered Reveal Animation (Like bobby.so content-reveal)
   ========================================================================== */
.reveal-item {
  opacity: 0;
  transform: translateY(5px);
  animation: softReveal 420ms cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}

@keyframes softReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   Minimalist WeChat QR Modal & Toast
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--modal-backdrop);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  display: grid;
  place-items: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 180ms ease, visibility 180ms;
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  width: min(280px, 100%);
  padding: 20px;
  border-radius: 16px;
  border: 1px solid var(--card-border);
  background: var(--bg);
  box-shadow: var(--preview-shadow);
  text-align: center;
  transform: translateY(6px) scale(0.98);
  transition: transform 200ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.modal-backdrop.is-open .modal-box {
  transform: translateY(0) scale(1);
}

.modal-qr {
  width: 180px;
  height: 180px;
  margin: 12px auto;
  padding: 10px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: #ffffff;
}

.modal-qr img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.modal-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 10px;
}

/* ==========================================================================
   Back to Top Button (内容区域右侧底部)
   ========================================================================== */
.back-to-top-btn {
  position: fixed;
  bottom: 32px;
  /* 精准吸附在 580px 内容宽度右边缘外侧，保证在大屏不贴屏幕边缘，在小屏不溢出 */
  left: min(calc(50% + 290px + 20px), calc(100vw - 52px));
  z-index: 50;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  color: var(--muted);
  background: var(--card-bg);
  border: 1px solid var(--icon-border);
  box-shadow: var(--preview-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  pointer-events: none;
  cursor: pointer;
  transition: opacity 200ms ease, transform 220ms cubic-bezier(0.2, 0.7, 0.2, 1),
              visibility 200ms, color 150ms ease, border-color 150ms ease, background-color 150ms ease;
}

.back-to-top-btn.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--text) 24%, transparent);
  transform: translateY(-2px);
}

.back-to-top-btn:active {
  transform: translateY(0) scale(0.95);
}

.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translate(-50%, -10px);
  z-index: 120;
  padding: 6px 16px;
  border-radius: 999px;
  border: 1px solid var(--card-border);
  background: var(--bg);
  color: var(--text);
  box-shadow: var(--preview-shadow);
  font-size: 0.75rem;
  line-height: 1.5;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms ease, transform 200ms cubic-bezier(0.2, 0.7, 0.2, 1), visibility 180ms;
}

.toast.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}

/* ==========================================================================
   Responsive Breakpoints (Exact bobby.so media queries)
   ========================================================================== */
@media (max-width: 1199px) {
  body {
    font-size: 0.9375rem;
    line-height: 24px;
  }
}

@media (max-width: 639px) {
  body {
    padding: 44px 24px;
  }

  .studio-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }
}

@media (max-width: 359px) {
  body {
    padding-right: 20px;
    padding-left: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .project-preview,
  .reveal-item {
    transition: none;
    transform: none;
    animation: none;
    opacity: 1;
  }
}