/* ==========================================================================
   Dola — 站点样式表
   设计原则：颜色用变量、间距用 clamp、动画可关闭。
   改主题只需要动最上面的 :root。
   ========================================================================== */

:root {
  --bg: #f8f9fa;
  --panel: #ffffff;
  --text: #1a2130;
  --body: #46536a;
  --muted: #556274;
  --border: #e6eaf0;
  --accent: #38598d;
  --accent-2: #45658f;
  --accent-soft: rgba(56, 89, 141, 0.10);
  --accent-line: rgba(56, 89, 141, 0.32);
  --highlight: #e9f1ff;
  --glow-1: rgba(102, 148, 214, 0.20);
  --glow-2: rgba(120, 176, 200, 0.14);
  --shadow-sm: 0 1px 2px rgba(23, 32, 53, 0.04);
  --shadow: 0 1px 2px rgba(23, 32, 53, 0.04), 0 20px 44px -28px rgba(23, 32, 53, 0.30);

  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei UI", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", "Cascadia Mono", Consolas, monospace;

  --wrap: 720px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b0f16;
    --panel: #121826;
    --text: #e9eef7;
    --body: #c2cddc;
    --muted: #94a2b7;
    --border: #212b3b;
    --accent: #8fb3e8;
    --accent-2: #a8c4ee;
    --accent-soft: rgba(143, 179, 232, 0.12);
    --accent-line: rgba(143, 179, 232, 0.32);
    --highlight: rgba(143, 179, 232, 0.10);
    --glow-1: rgba(60, 100, 164, 0.24);
    --glow-2: rgba(42, 88, 112, 0.18);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.5), 0 24px 54px -30px rgba(0, 0, 0, 0.70);
  }
}

* { box-sizing: border-box; }

html {
  color-scheme: light dark;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  overflow-x: clip;
}

/* 背景里两团极淡的光，给纯色一点空气感 */
.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}
.glow--a {
  top: -20vh; left: -14vw;
  width: 62vmax; height: 62vmax;
  background: var(--glow-1);
  animation: drift-a 34s ease-in-out infinite alternate;
}
.glow--b {
  right: -16vw; bottom: -24vh;
  width: 54vmax; height: 54vmax;
  background: var(--glow-2);
  animation: drift-b 42s ease-in-out infinite alternate;
}
@keyframes drift-a {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to   { transform: translate3d(6vw, 4vh, 0) scale(1.12); }
}
@keyframes drift-b {
  from { transform: translate3d(0, 0, 0) scale(1.06); }
  to   { transform: translate3d(-5vw, -3vh, 0) scale(1); }
}

.wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(20px, 5vw, 32px);
}

/* ---------- 页头 ---------- */

.site-header {
  padding-block: clamp(18px, 4vh, 28px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  text-decoration: none;
}
.brand svg { width: 24px; height: 24px; color: var(--accent); flex: none; }

.nav {
  display: flex;
  gap: clamp(14px, 3.4vw, 26px);
  font-size: 0.94rem;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  padding-block: 4px;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.nav a:hover { color: var(--text); }
.nav a[aria-current="page"] {
  color: var(--text);
  border-bottom-color: var(--accent-line);
}

/* ---------- 首页 ---------- */

main { flex: 1; }

.hero { padding-block: clamp(44px, 11vh, 104px) clamp(28px, 5vh, 48px); }

.kicker {
  margin: 0 0 clamp(16px, 3vh, 22px);
  font-family: var(--mono);
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--accent);
}

h1 {
  margin: 0;
  font-size: clamp(2.05rem, 6.4vw, 3.2rem);
  font-weight: 640;
  line-height: 1.24;
  letter-spacing: -0.022em;
  text-wrap: balance;
}

.lede {
  margin: clamp(18px, 3vh, 26px) 0 0;
  max-width: 30em;
  font-size: clamp(1.01rem, 2.6vw, 1.12rem);
  line-height: 1.92;
  color: var(--body);
  text-wrap: pretty;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: clamp(22px, 4vh, 32px) 0 0;
  font-size: 0.96rem;
}
.actions a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-line);
  padding-bottom: 2px;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.actions a:hover { color: var(--text); border-bottom-color: var(--accent); }
.actions a span { transition: transform 0.2s ease; }
.actions a:hover span { transform: translateX(3px); }

.latest {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 3px 12px;
  margin: clamp(20px, 3.5vh, 28px) 0 0;
  padding-top: clamp(14px, 2.4vh, 18px);
  border-top: 1px solid var(--border);
  font-size: 0.91rem;
  line-height: 1.75;
  color: var(--muted);
}
.latest-label {
  flex: none;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--accent);
}
.latest a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.latest a:hover { border-bottom-color: var(--accent); }
.latest a span { transition: transform 0.2s ease; display: inline-block; }
.latest a:hover span { transform: translateX(3px); }

/* 三个入口 */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(184px, 1fr));
  gap: clamp(12px, 2.2vw, 18px);
  margin: clamp(38px, 7vh, 64px) 0 0;
}

.card {
  display: flex;
  flex-direction: column;
  padding: clamp(20px, 3.4vw, 26px);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-sm);
  color: inherit;
  text-decoration: none;
  transition: transform 0.28s cubic-bezier(0.22, 0.61, 0.36, 1),
              border-color 0.28s ease, box-shadow 0.28s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-line);
  box-shadow: var(--shadow);
}
.card h2 {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.card p {
  margin: 9px 0 0;
  font-size: 0.91rem;
  line-height: 1.72;
  color: var(--muted);
  text-wrap: pretty;
}
.card .more {
  margin-top: auto;
  padding-top: 15px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  color: var(--accent);
}
.card .more span { transition: transform 0.25s ease; }
.card:hover .more span { transform: translateX(3px); }

/* 三条原则 */
.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: clamp(18px, 3vw, 28px);
  margin-top: clamp(48px, 9vh, 88px);
  padding-top: clamp(24px, 4vh, 34px);
  border-top: 1px solid var(--border);
}
.principle h3 {
  margin: 0 0 7px;
  font-size: 0.95rem;
  font-weight: 600;
}
.principle p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.75;
  color: var(--muted);
  text-wrap: pretty;
}

/* ---------- 内容页 ---------- */

.page-head { padding-block: clamp(36px, 9vh, 80px) clamp(10px, 2vh, 18px); }
.page-head h1 { font-size: clamp(1.85rem, 5.2vw, 2.4rem); }
.page-head .lede { margin-top: clamp(14px, 2.4vh, 20px); }

.prose { max-width: 34em; padding-bottom: clamp(20px, 4vh, 36px); }
.prose p {
  margin: 0 0 1.25em;
  font-size: clamp(1rem, 2.5vw, 1.05rem);
  line-height: 2;
  color: var(--body);
  text-wrap: pretty;
}
.prose p:last-child { margin-bottom: 0; }
.prose a { color: var(--accent); text-underline-offset: 3px; }

.prose pre {
  margin: 0 0 1.2em;
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow-x: auto;
}
.prose pre code {
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--body);
  white-space: pre;
}
.prose code {
  font-family: var(--mono);
  font-size: 0.9em;
  color: var(--text);
  background: var(--accent-soft);
  padding: 1px 5px;
  border-radius: 5px;
}
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 0 0 1.4em;
  font-size: 0.94rem;
}
.prose table caption {
  text-align: left;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding-bottom: 10px;
}
.prose table th,
.prose table td {
  text-align: left;
  padding: 10px 14px 10px 0;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.7;
}
.prose table th {
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}
.prose table td { color: var(--body); }
.prose table tr:last-child td { border-bottom: 0; }

.section { margin-top: clamp(34px, 6vh, 52px); }
.section h2 {
  margin: 0 0 14px;
  font-size: clamp(1.08rem, 3vw, 1.16rem);
  font-weight: 620;
  letter-spacing: 0.01em;
}

/* 作品条目 */
.work {
  padding-block: clamp(24px, 4.4vh, 34px);
}
.work + .work { border-top: 1px solid var(--border); }
.work-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
}
.work-head h2 {
  margin: 0;
  font-size: clamp(1.08rem, 3vw, 1.18rem);
  font-weight: 620;
}
.work-head .status {
  padding: 2px 10px;
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
}
.work p {
  margin: 10px 0 0;
  max-width: 34em;
  font-size: clamp(0.98rem, 2.4vw, 1.02rem);
  line-height: 1.92;
  color: var(--body);
  text-wrap: pretty;
}

/* 小号文字链接，用在作品条目里 */
.link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 14px;
  padding-bottom: 2px;
  font-size: 0.89rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-line);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.link:hover { color: var(--text); border-bottom-color: var(--accent); }
.link span { transition: transform 0.2s ease; }
.link:hover span { transform: translateX(3px); }

/* 笔记条目 */
.note { padding-block: clamp(26px, 4.6vh, 36px); }
.note + .note { border-top: 1px solid var(--border); }
.note time {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.note h2 {
  margin: 0 0 14px;
  font-size: clamp(1.1rem, 3.1vw, 1.2rem);
  font-weight: 620;
  letter-spacing: -0.005em;
}
.note p {
  margin: 0 0 1.15em;
  max-width: 34em;
  font-size: clamp(0.99rem, 2.4vw, 1.04rem);
  line-height: 1.98;
  color: var(--body);
  text-wrap: pretty;
}
.note p:last-child { margin-bottom: 0; }

.tail {
  margin-top: clamp(34px, 6vh, 50px);
  padding-top: clamp(20px, 3.4vh, 28px);
  border-top: 1px solid var(--border);
  font-size: 0.92rem;
  color: var(--muted);
}

/* 强调块 */
.callout {
  margin-top: clamp(28px, 5vh, 40px);
  padding: clamp(20px, 3.6vw, 28px);
  background: var(--highlight);
  border: 1px solid var(--accent-soft);
  border-radius: 16px;
  font-size: clamp(0.99rem, 2.5vw, 1.04rem);
  line-height: 1.9;
  color: var(--text);
}

/* ---------- 页脚 ---------- */

.site-footer {
  margin-top: clamp(56px, 11vh, 110px);
  padding-block: clamp(22px, 4vh, 32px);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 22px;
  font-size: 0.83rem;
  letter-spacing: 0.04em;
  color: var(--muted);
}
.site-footer a { color: var(--muted); text-decoration: none; border-bottom: 1px solid var(--border); }
.site-footer a:hover { color: var(--text); border-bottom-color: var(--accent-line); }

/* ---------- 细节 ---------- */

::selection { background: var(--accent); color: var(--panel); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

[data-reveal] {
  animation: rise 0.85s cubic-bezier(0.22, 0.61, 0.36, 1) both;
  animation-delay: var(--d, 0s);
}
@keyframes rise {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .card:hover { transform: none; }
}

/* 手机端表格：允许横向滚动，避免长代码或域名把正文撑出屏幕 */
@media (max-width: 640px) {
  .prose table {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-x: contain;
  }
  .prose table th { white-space: normal; }
}

@media (max-width: 420px) {
  .nav { gap: 14px; font-size: 0.9rem; }
  .site-footer { justify-content: flex-start; }
}