/* ==========================================================================
   style.css — 个人主页样式
   适配 EN / JP / CN 三语切换，手机响应式
   ========================================================================== */

/* ── Reset ──────────────────────────────────────────────────────────── */

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

/* ── Design tokens ──────────────────────────────────────────────────── */

:root {
  --bg: #f5f0eb;
  --card: #fffdf9;
  --text: #2c2825;
  --muted: #8a8480;
  --accent: #c97b5a;
  --border: rgba(44, 40, 37, 0.10);
  --radius: 18px;
  --tag-bg: #eee8e1;
  --tag-text: #7a6e68;
  --btn-bg: #2c2825;
  --btn-text: #fffdf9;
  --btn-hover: #4a3f38;
  --lang-active: #2c2825;
  --lang-inactive: #b0a89e;

  --font-sans: "Helvetica Neue", Helvetica, Arial, -apple-system, BlinkMacSystemFont, sans-serif;

  --font-sans-jp: "Noto Sans JP", "Hiragino Kaku Gothic Pro", "Yu Gothic", sans-serif;

  --font-sans-cn: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;

  --font-mono: 'Courier New', monospace;
}

/* ── Body ───────────────────────────────────────────────────────────── */

body {
  background: var(--bg);
  font-family: var(--font-sans);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2.5rem 1rem 4rem;
}

/* ── Language switcher ──────────────────────────────────────────────── */

.lang-bar {
  display: flex;
  gap: 6px;
  margin-bottom: 2.4rem;
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: 50px;
  padding: 4px 6px;
}

.lang-bar button {
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  padding: 5px 14px;
  border-radius: 50px;
  color: var(--lang-inactive);
  transition: background 0.18s, color 0.18s;
  font-family: inherit;
}

.lang-bar button.active {
  background: var(--lang-active);
  color: var(--card);
}

.lang-bar button:hover:not(.active) {
  color: var(--text);
  background: var(--tag-bg);
}

/* ── Main card ──────────────────────────────────────────────────────── */

.card {
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 2.2rem 2rem 2.4rem;
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

/* ── Avatar ─────────────────────────────────────────────────────────── */

.avatar-wrap {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--card);
  box-shadow: 0 0 0 2px var(--border);
  background: var(--tag-bg);
  margin-bottom: 1.1rem;
  flex-shrink: 0;
}

.avatar-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 18% 45%;
  transform: scale(1.35);
}

.avatar-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 38px;
  color: var(--muted);
  user-select: none;
}

/* ── Name & handle ──────────────────────────────────────────────────── */

.name {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 0.15rem;
  text-align: center;
  font-family: "Lora", "Source Serif 4", "Noto Serif JP", serif;
}

.handle {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 1.1rem;
  font-family: var(--font-mono);
}

/* ── Bio ────────────────────────────────────────────────────────────── */

.bio {
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text);
  text-align: center;
  max-width: 320px;
  margin-bottom: 1.8rem;
}

/* ── Divider ────────────────────────────────────────────────────────── */

.divider {
  width: 100%;
  height: 0.5px;
  background: var(--border);
  margin-bottom: 1.5rem;
}

/* ── Section title ──────────────────────────────────────────────────── */

.section-title {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.4rem;
  align-self: flex-start;
}

/* ── Warning text ───────────────────────────────────────────────────── */

.warning-text {
  display: block;
  text-align: left;
  color: #6b1515
}

/* ── Work box ───────────────────────────────────────────────────────── */

.works {
  width: 100%;
  margin-top: 1rem;
  margin-bottom: 2rem;
}

.work-box {
  background: var(--bg);
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  width: 100%;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 120px;
  word-wrap: break-word;
}

/* ── Inline link inside work-box ──────────────────────────────────── */

.work-link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  transition: color 0.15s;
}

.work-link:hover {
  color: var(--accent);
}

/* ── Social links ───────────────────────────────────────────────────── */

.socials-title {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.4rem;
}

.socials {
  display: flex;
  gap: 16px;
  justify-content: center;
  width: 100%;
}

.social-btn {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: var(--btn-bg);
  color: var(--btn-text);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  gap: 3px;
  transition: background 0.15s, transform 0.12s;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.social-btn:hover {
  background: var(--btn-hover);
  transform: translateY(-2px);
}

.social-btn svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
  flex-shrink: 0;
}

.social-label {
  font-size: 8.5px;
  letter-spacing: 0.04em;
  line-height: 1;
  font-family: var(--font-mono);
  opacity: 0.75;
}

/* ── Footer ─────────────────────────────────────────────────────────── */

.footer {
  margin-top: 2.2rem;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ── i18n 显示控制 ──────────────────────────────────────────────────── */

[data-lang] {
  display: none;
}

[data-lang].visible {
  display: contents;
}

/* ── 按语言覆盖字体（核心：避免中日汉字字形互相串用） ───────────── */
/* 注意：选择器需匹配你 HTML 中实际使用的 data-lang 取值，
   若你用的是 ja / zh 而非 jp / cn，请相应修改下面三处 */

[data-lang="jp"],
[data-lang="jp"] * {
  font-family: var(--font-sans-jp);
}

[data-lang="cn"],
[data-lang="cn"] * {
  font-family: var(--font-sans-cn);
}

[data-lang="en"],
[data-lang="en"] * {
  font-family: var(--font-sans);
}

/* ── Avatar tooltip ─────────────────────────────────────────────────── */

.avatar-tooltip {
  position: fixed;
  pointer-events: none;
  background: var(--card);
  border: 0.5px solid var(--border);
  border-radius: 8px;
  padding: 5px 12px;
  font-size: 12px;
  color: var(--text);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 1000;
  box-shadow: 0 2px 8px rgba(44, 40, 37, 0.08);
  font-family: var(--font-sans);
}

.avatar-tooltip.show {
  opacity: 1;
}

/* ── Mobile responsive ──────────────────────────────────────────────── */

@media (max-width: 440px) {
  body {
    padding: 1.5rem 0.75rem 3rem;
  }

  .card {
    padding: 1.8rem 1.2rem 2rem;
    border-radius: 14px;
  }

  .avatar-wrap {
    width: 80px;
    height: 80px;
  }

  .avatar-placeholder {
    font-size: 32px;
  }

  .name {
    font-size: 18px;
  }

  .bio {
    font-size: 13px;
    line-height: 1.7;
  }

  .social-btn {
    width: 48px;
    height: 48px;
  }

  .social-btn svg {
    width: 18px;
    height: 18px;
  }

  .socials {
    gap: 12px;
  }

  .lang-bar {
    margin-bottom: 1.8rem;
  }

  .footer {
    margin-top: 1.8rem;
  }
}

/* page.html — 子页面样式 */

.page-title {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 1.8rem;
  text-align: center;
}

.content-box {
  background: var(--bg);
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  width: 100%;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
  font-family: var(--font-sans);
  margin-bottom: 2rem;
  word-wrap: break-word;
}

.back-link {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

.back-link:hover {
  color: var(--text);
}

.expand-block {
  border: 0.5px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 10px;
}

.expand-block summary {
  list-style: none;
  cursor: pointer;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--text);
  user-select: none;
  transition: background 0.12s;
}

.expand-block summary:hover {
  background: rgba(44, 40, 37, 0.04);
}

.expand-block summary::-webkit-details-marker {
  display: none;
}

.expand-arrow {
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-top: -2px;
}

.expand-block[open] .expand-arrow {
  transform: rotate(45deg);
  margin-top: 2px;
}

.expand-body {
  padding: 0 14px 12px 29px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
}

.expand-body p+p {
  margin-top: 6px;
}

.expand-body details:not(.expand-block) summary {
  list-style: none;
  cursor: pointer;
  padding: 4px 0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--muted);
  user-select: none;
  transition: color 0.12s;
}

.expand-body details:not(.expand-block) summary:hover {
  color: var(--text);
}

.expand-body details:not(.expand-block) summary::-webkit-details-marker {
  display: none;
}

.expand-body details:not(.expand-block) .expand-arrow2 {
  width: 5px;
  height: 5px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
  flex-shrink: 0;
  margin-top: -1px;
}

.expand-body details:not(.expand-block)[open] .expand-arrow2 {
  transform: rotate(45deg);
  margin-top: 1px;
}

.expand-body details:not(.expand-block) .expand-body2 {
  padding: 4px 0 6px 16px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--text);
}

.expand-body details:not(.expand-block) .expand-body2 p+p {
  margin-top: 6px;
}

@media (max-width: 440px) {
  .page-title {
    font-size: 18px;
    margin-bottom: 1.4rem;
  }

  .content-box {
    font-size: 13px;
  }
}