/* ============================================================
   Walker Theme v2 — 「低调的炫技」
   初看：干净的深色站。细看：网格、光晕、玻璃、光标、呼吸灯。
   设计原则：所有效果都克制在「几乎注意不到」和「很讲究」之间。
   ============================================================ */

:root {
  --bg: #0a0e13;
  --bg-soft: #10161e;
  --panel: rgba(18, 25, 34, 0.55);
  --panel-solid: #121a23;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(77, 196, 179, 0.35);
  --text: #c9d4dd;
  --text-bright: #e8eef4;
  --text-dim: #78838f;
  --accent: #4dc4b3;
  --accent-2: #8b7cf8;
  --accent-glow: rgba(77, 196, 179, 0.12);
  --ok: #3fd68f;
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas, "Courier New", monospace;
  --sans: -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.8;
  min-height: 100vh;
  overflow-x: hidden;
}

::selection { background: rgba(77, 196, 179, 0.28); color: var(--text-bright); }

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #1e2a36; border-radius: 5px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: #2c3d4d; }

/* ---------- 背景：网格 + 双色光晕 + 胶片颗粒 ---------- */
.bg-grid {
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.022) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: radial-gradient(ellipse 100% 75% at 50% 0%, #000 35%, transparent 100%);
  mask-image: radial-gradient(ellipse 100% 75% at 50% 0%, #000 35%, transparent 100%);
}

.bg-glow {
  position: fixed; z-index: -3; pointer-events: none;
  width: 560px; height: 560px; border-radius: 50%;
  filter: blur(90px);
}
.bg-glow-a {
  top: -220px; left: 12%;
  background: radial-gradient(circle, rgba(77, 196, 179, 0.13), transparent 65%);
  animation: drift-a 26s ease-in-out infinite alternate;
}
.bg-glow-b {
  bottom: -260px; right: 8%;
  background: radial-gradient(circle, rgba(139, 124, 248, 0.10), transparent 65%);
  animation: drift-b 32s ease-in-out infinite alternate;
}
@keyframes drift-a { to { transform: translate(60px, 40px); } }
@keyframes drift-b { to { transform: translate(-50px, -40px); } }

/* 胶片颗粒（SVG 噪声，opacity 压到几乎不可见，但屏幕质感会不一样） */
body::after {
  content: ""; position: fixed; inset: 0; z-index: 90; pointer-events: none; opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

.mono { font-family: var(--mono); }
.ok { color: var(--ok); }
.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

.wrap {
  max-width: 760px; margin: 0 auto; padding: 0 24px;
  position: relative; z-index: 1;
}

/* ---------- 玻璃面板（全站通用质感） ---------- */
.glass {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  backdrop-filter: blur(12px) saturate(140%);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.045), 0 4px 24px rgba(0, 0, 0, 0.25);
}

/* ---------- 顶栏 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(10, 14, 19, 0.72);
  backdrop-filter: blur(14px) saturate(150%);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; height: 58px;
}
.logo {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--text-bright); text-decoration: none;
  font-size: 0.92rem; letter-spacing: 0.02em;
}
.logo:hover { color: var(--accent); }
/* 呼吸状态灯：像服务状态页那样，绿点会向外扩散一圈涟漪 */
.status-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(63, 214, 143, 0.5);
  animation: pulse-ring 2.4s ease-out infinite;
}
@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(63, 214, 143, 0.45); }
  70%  { box-shadow: 0 0 0 7px rgba(63, 214, 143, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 214, 143, 0); }
}
.nav { display: flex; gap: 4px; font-size: 0.85rem; }
.nav a {
  color: var(--text-dim); text-decoration: none;
  padding: 5px 11px; border-radius: 8px;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover { color: var(--text-bright); background: rgba(255, 255, 255, 0.05); }
.nav a.active { color: var(--accent); background: rgba(77, 196, 179, 0.09); }
.ver {
  font-size: 0.68rem; color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 999px;
  padding: 2px 9px; letter-spacing: 0.06em;
}

/* ---------- 首页 Hero 终端 ---------- */
.hero { margin: 34px 0 30px; }
.term { overflow: hidden; }
.term-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
}
.dots { display: inline-flex; gap: 7px; }
.dots i {
  width: 11px; height: 11px; border-radius: 50%; display: inline-block;
}
.dots i:nth-child(1) { background: #ff5f56; }
.dots i:nth-child(2) { background: #ffbd2e; }
.dots i:nth-child(3) { background: #27c93f; }
.term-title { font-size: 0.76rem; color: var(--text-dim); }
.term-ver { margin-left: auto; font-size: 0.68rem; color: var(--text-dim); opacity: 0.7; }
.term-body {
  padding: 18px 20px 22px;
  font-size: 0.85rem; line-height: 2;
  color: var(--text);
}
.term-line { white-space: pre-wrap; word-break: break-all; }
/* 终端提示符：打字区域前面的 $ 用点缀色 */
.typed::before { content: "$ "; color: var(--accent); }
.typed.typing::after {
  content: "▊"; color: var(--accent); margin-left: 1px;
  animation: blink 0.9s steps(1) infinite;
}
.term-out { color: var(--text-dim); padding-left: 2px; }
.term-out .ok { font-weight: 600; }
.term-out.hidden { visibility: hidden; }
.term-out.show { animation: fade-up 0.35s ease both; }
.prompt { color: var(--accent); }
/* 闲置光标：等待输入的方块 */
.cursor {
  display: inline-block; width: 9px; height: 1.05em;
  margin-left: 7px; vertical-align: text-bottom;
  background: var(--accent); opacity: 0.85;
  animation: blink 1.1s steps(1) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
@keyframes fade-up {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 页首标题（归档 / 标签 / 分类页） ---------- */
.page-head { margin: 40px 0 26px; }
.page-head h1 {
  font-size: 1.5rem; font-weight: 600;
  color: var(--text-bright); letter-spacing: 0.02em;
}
.page-head h1::first-letter { color: var(--accent); }
.page-head .desc { color: var(--text-dim); font-size: 0.8rem; margin-top: 6px; }
.blink { color: var(--accent); animation: blink 1.2s steps(1) infinite; }

/* ---------- 文章卡片 ---------- */
.post-list { display: flex; flex-direction: column; gap: 14px; }
.post-item {
  position: relative;
  display: flex; align-items: center; gap: 18px;
  padding: 18px 22px;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.post-item:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 10px 36px rgba(77, 196, 179, 0.09),
    0 4px 24px rgba(0, 0, 0, 0.3);
}
.post-item-main { flex: 1; min-width: 0; }
.post-item-top {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.74rem; color: var(--text-dim);
}
.post-date { letter-spacing: 0.05em; }
.post-tags a { color: var(--text-dim); text-decoration: none; }
.post-tags a:hover { color: var(--accent); }
.post-title {
  flex: 1; min-width: 0;
  color: var(--text-bright); text-decoration: none;
  font-size: 1.02rem; font-weight: 600; line-height: 1.5;
}
.post-item:hover .post-title { color: var(--accent); }
.post-arrow {
  color: var(--text-dim); font-size: 0.9rem;
  transition: transform 0.25s ease, color 0.25s ease;
}
.post-item:hover .post-arrow { transform: translateX(5px); color: var(--accent); }

/* ---------- 滚动渐入（交错延迟，像瀑布一样逐张浮起） ---------- */
.js .reveal {
  opacity: 0; transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
  transition-delay: min(calc(var(--i, 0) * 55ms), 380ms);
}
.js .reveal.in { opacity: 1; transform: none; }

/* ---------- 文章页 ---------- */
.post-full { padding: 34px 38px; }
.post-header { margin-bottom: 30px; }
.post-header h1 {
  font-size: 1.72rem; font-weight: 700; line-height: 1.4;
  color: var(--text-bright);
}
.meta {
  display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px;
  font-size: 0.76rem; color: var(--text-dim);
}
.meta-item a { color: var(--text-dim); text-decoration: none; }
.meta-item a:hover { color: var(--accent); }
.meta-item.chip {
  border: 1px solid var(--border); border-radius: 999px;
  padding: 1px 10px;
}

/* 正文排版 */
.post-content { font-size: 0.95rem; }
.post-content h2 {
  margin: 2em 0 0.7em; font-size: 1.3rem; color: var(--text-bright);
  padding-left: 14px; position: relative;
}
.post-content h2::before {
  content: ""; position: absolute; left: 0; top: 0.18em; bottom: 0.18em; width: 4px;
  border-radius: 2px;
  background: linear-gradient(var(--accent), var(--accent-2));
}
.post-content h3 { margin: 1.6em 0 0.6em; font-size: 1.1rem; color: var(--text-bright); }
.post-content h4, .post-content h5, .post-content h6 {
  margin: 1.4em 0 0.5em; color: var(--text-bright);
}
.post-content p { margin: 0.85em 0; }
.post-content a {
  color: var(--accent); text-decoration: none;
  background: linear-gradient(var(--accent), var(--accent)) no-repeat;
  background-size: 0% 1px; background-position: 0 100%;
  transition: background-size 0.25s ease;
  padding-bottom: 1px;
}
.post-content a:hover { background-size: 100% 1px; }
.post-content strong { color: var(--text-bright); }
.post-content ul, .post-content ol { padding-left: 1.5em; margin: 0.85em 0; }
.post-content li { margin: 0.3em 0; }
.post-content li::marker { color: var(--accent); }
.post-content blockquote {
  margin: 1.2em 0; padding: 12px 18px;
  border-left: 3px solid var(--accent);
  border-image: linear-gradient(var(--accent), var(--accent-2)) 1;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 0 10px 10px 0;
  color: var(--text-dim);
}
.post-content blockquote p { margin: 0.3em 0; }
.post-content hr {
  border: none; height: 1px; margin: 2.2em auto; width: 60%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}
/* 行内代码：键帽质感 */
.post-content code {
  font-family: var(--mono); font-size: 0.86em;
  background: rgba(77, 196, 179, 0.08);
  border: 1px solid rgba(77, 196, 179, 0.16);
  border-radius: 6px; padding: 1px 7px;
  color: var(--accent);
}
.post-content img {
  max-width: 100%; border-radius: 12px;
  border: 1px solid var(--border);
  margin: 0.5em 0;
}

/* 代码块：Mac 终端窗口拟物 */
figure.highlight {
  margin: 1.3em 0; border-radius: 13px; overflow: hidden;
  background: var(--panel-solid);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 4px 24px rgba(0, 0, 0, 0.28);
}
.win-bar {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 14px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.025);
}
.win-dots { display: inline-flex; gap: 6px; }
.win-dots i { width: 10px; height: 10px; border-radius: 50%; }
.win-dots i:nth-child(1) { background: #ff5f56; }
.win-dots i:nth-child(2) { background: #ffbd2e; }
.win-dots i:nth-child(3) { background: #27c93f; }
.win-name {
  font-size: 0.7rem; color: var(--text-dim); letter-spacing: 0.08em;
}
.win-cursor { margin-left: auto; font-size: 0.55rem; color: var(--accent); opacity: 0.7; }
figure.highlight table { width: 100%; border-collapse: collapse; }
figure.highlight td { border: none; padding: 0; vertical-align: top; }
figure.highlight .gutter {
  width: 1%; user-select: none;
  border-right: 1px solid var(--border) !important;
}
figure.highlight .gutter pre {
  padding: 14px 10px 14px 16px; text-align: right;
  color: #46586a; font-size: 0.8rem; line-height: 1.75;
}
figure.highlight .code pre {
  padding: 14px 18px; overflow-x: auto;
  font-size: 0.84rem; line-height: 1.75;
}
figure.highlight .code code,
figure.highlight pre {
  font-family: var(--mono); background: transparent; border: none;
  padding: 0; margin: 0; color: var(--text); white-space: pre;
}
/* 语法高亮配色（低饱和，夜里不刺眼） */
.hljs-title, .title { color: var(--accent); }
.hljs-section, .section { color: var(--accent); font-weight: 600; }
.hljs-keyword, .keyword { color: var(--accent-2); }
.hljs-string, .string { color: #86d3a2; }
.hljs-number, .number { color: #e0af68; }
.hljs-comment, .comment { color: #556474; font-style: italic; }
.hljs-attr, .attr { color: #e5c07b; }
.hljs-built_in, .built_in { color: #6cb6ff; }
.hljs-name, .name { color: #e06c9f; }
.hljs-tag, .tag { color: var(--accent-2); }
.hljs-literal, .literal { color: #e0af68; }
.hljs-meta, .meta { color: var(--text-dim); }
.hljs-symbol, .symbol { color: #6cb6ff; }
.hljs-addition, .addition { color: var(--ok); }
.hljs-deletion, .deletion { color: #e06c75; }
.hljs-variable, .variable { color: #e5c07b; }
.hljs-type, .type { color: #6cb6ff; }
.hljs-params, .params { color: var(--text); }
.hljs-property, .property { color: var(--accent); }

/* 表格 */
.post-content table {
  width: 100%; border-collapse: collapse; margin: 1.2em 0;
  font-size: 0.88rem;
}
.post-content th, .post-content td {
  border: 1px solid var(--border);
  padding: 8px 14px; text-align: left;
}
.post-content th {
  background: rgba(77, 196, 179, 0.06);
  color: var(--text-bright); font-weight: 600;
}
.post-content tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* 文章底部导航 */
.post-nav {
  display: flex; justify-content: space-between; gap: 14px;
  margin: 26px 0 10px; font-size: 0.82rem;
}
.post-nav a {
  flex: 1; min-width: 0;
  color: var(--text-dim); text-decoration: none;
  padding: 13px 18px;
  transition: border-color 0.25s, color 0.25s, transform 0.25s;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.post-nav a:hover {
  color: var(--accent); border-color: var(--border-hover);
  transform: translateY(-2px);
}
.post-nav .next { text-align: right; }

/* ---------- 标签云 / 分类 ---------- */
.cloud { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }
.cloud-item {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 15px; border-radius: 999px;
  color: var(--text); text-decoration: none; font-size: 0.85rem;
  transition: border-color 0.25s, color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.cloud-item:hover {
  color: var(--accent); border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(77, 196, 179, 0.12);
}
.cloud-item .count {
  font-size: 0.68rem; color: var(--accent);
  background: rgba(77, 196, 179, 0.1);
  border-radius: 999px; padding: 0 7px; line-height: 1.6;
}

/* ---------- 分页 ---------- */
.paginator {
  display: flex; justify-content: center; gap: 10px;
  margin: 30px 0 14px; font-family: var(--mono); font-size: 0.8rem;
}
.paginator a, .paginator span {
  color: var(--text-dim); text-decoration: none;
  border: 1px solid var(--border); border-radius: 9px;
  padding: 6px 14px; background: var(--panel);
  transition: color 0.2s, border-color 0.2s;
}
.paginator a:hover { color: var(--accent); border-color: var(--border-hover); }
.paginator span.current { color: var(--accent); border-color: rgba(77, 196, 179, 0.4); background: rgba(77, 196, 179, 0.07); }

/* ---------- 页脚：SRE 状态栏风格 ---------- */
.site-footer {
  margin-top: 56px; padding: 20px 0 26px;
  border-top: 1px solid var(--border);
  font-size: 0.74rem; color: var(--text-dim);
}
.footer-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap;
}
.foot-left a { color: var(--text-dim); text-decoration: none; }
.foot-left a:hover { color: var(--accent); }
.foot-right { display: inline-flex; gap: 8px; flex-wrap: wrap; }
.foot-chip {
  border: 1px solid var(--border); border-radius: 999px;
  padding: 2px 10px; letter-spacing: 0.03em;
  color: var(--text-dim);
}
.foot-chip.ok { color: var(--ok); border-color: rgba(63, 214, 143, 0.25); }
.pulse-dot {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--ok); margin-right: 6px; vertical-align: 1px;
  animation: pulse-ring 2.4s ease-out infinite;
}

/* ---------- 无障碍：尊重系统的「减少动态效果」设置 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .js .reveal { opacity: 1; transform: none; }
}

/* ---------- 移动端 ---------- */
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .header-inner { height: 52px; gap: 8px; }
  .nav { font-size: 0.8rem; gap: 0; }
  .nav a { padding: 5px 8px; }
  .ver { display: none; }
  .hero { margin: 24px 0 24px; }
  .term-body { font-size: 0.76rem; padding: 14px 14px 16px; }
  .term-ver { display: none; }
  .post-item { padding: 15px 16px; gap: 10px; }
  .post-title { font-size: 0.95rem; }
  .post-arrow { display: none; }
  .post-full { padding: 24px 20px; }
  .post-header h1 { font-size: 1.35rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; gap: 10px; }
}