/* Xanri 个人主页 — Apple 原生克制风 */

:root {
  --bg: #ffffff;
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #86868b;
  --link: #0066cc;
  --rule: #d2d2d7;
  --card-bg: #f5f5f7;
  --max-width: 700px;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Segoe UI", "Microsoft YaHei", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }

/* ---- 导航栏 ---- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 48px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

@media (prefers-color-scheme: dark) {
  .nav { background: rgba(22, 22, 23, 0.8); border-bottom-color: rgba(255,255,255,0.08); }
}

.nav-brand {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.nav-links { display: flex; gap: 24px; }

.nav-links a {
  color: var(--text-secondary);
  font-size: 14px;
  transition: color 0.2s ease;
}

.nav-links a:hover { color: var(--text); }

/* ---- 主体版式 ---- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Hero ---- */
.hero {
  padding: 150px 0 90px;
}

.hero-name {
  font-size: 56px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  animation: fadeUp 0.8s ease both;
}

.hero-tagline {
  margin-top: 20px;
  font-size: 24px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
  animation: fadeUp 0.8s ease 0.12s both;
}

.hero-sub {
  margin-top: 10px;
  font-size: 20px;
  color: var(--text-secondary);
  animation: fadeUp 0.8s ease 0.24s both;
}

/* ---- 区块通用 ---- */
.section {
  padding: 40px 0 56px;
  border-top: 1px solid var(--rule);
}

.section-title {
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  margin-bottom: 24px;
}

.section-body p { margin-bottom: 14px; }

.section-body p:last-child { margin-bottom: 0; }

/* ---- 项目卡片 ---- */
.projects { display: flex; flex-direction: column; gap: 16px; }

.project {
  display: block;
  padding: 24px 26px;
  background: var(--card-bg);
  border-radius: 16px;
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease, box-shadow 0.25s ease, background 0.2s ease;
}

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

.project:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  background: #f0f0f2;
}

@media (prefers-color-scheme: dark) {
  .project { background: #1d1d1f; }
  .project:hover { background: #2a2a2c; box-shadow: 0 8px 24px rgba(0,0,0,0.4); }
}

.project-name { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; }

.project-desc {
  margin-top: 6px;
  font-size: 15px;
  color: var(--text-secondary);
}

.project-tags {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.project-tags span {
  font-size: 12px;
  color: var(--link);
  background: rgba(0, 102, 204, 0.08);
  border-radius: 999px;
  padding: 3px 10px;
}

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

.project-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  color: var(--link);
}

/* ---- 页脚 ---- */
.footer {
  border-top: 1px solid var(--rule);
  margin-top: 24px;
  padding: 28px 24px 40px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 13px;
}

.footer p { margin-bottom: 4px; }

.footer a:hover { text-decoration: underline; }

/* ---- 动效 ---- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---- 响应式 ---- */
@media (max-width: 640px) {
  .hero { padding: 110px 0 60px; }
  .hero-name { font-size: 40px; }
  .hero-tagline { font-size: 20px; }
  .hero-sub { font-size: 17px; }
  .nav { padding: 0 18px; }
  body { font-size: 16px; }
}