/* 杰杰wave — 技术博客静态站（可替换为 Astro Paper 构建产物） */
:root {
  --bg0: #06070c;
  --bg1: #0c0e14;
  --surface: rgba(18, 21, 30, 0.72);
  --surface2: rgba(28, 32, 45, 0.55);
  --line: rgba(255, 255, 255, 0.08);
  --muted: #8b92a8;
  --text: #e9ecf5;
  --accent: #6e8cff;
  --accent2: #9d7dff;
  --green: #3dd68c;
  --orange: #ffb86c;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 14px;
  --font-sans: "Noto Sans SC", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --font-display: "Instrument Serif", Georgia, serif;
}

[data-theme="light"] {
  color-scheme: light;
  --bg0: #f4f5fb;
  --bg1: #eef0f8;
  --surface: rgba(255, 255, 255, 0.82);
  --surface2: rgba(255, 255, 255, 0.95);
  --line: rgba(0, 0, 0, 0.08);
  --muted: #5c6477;
  --text: #141722;
  --shadow: 0 20px 60px rgba(20, 30, 70, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg0);
  overflow-x: hidden;
}

.bg-grid {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(120, 140, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120, 140, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, black 20%, transparent 75%);
  z-index: 0;
}

.orb {
  pointer-events: none;
  position: fixed;
  width: min(90vw, 520px);
  height: min(90vw, 520px);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(110, 140, 255, 0.35), transparent 55%),
    radial-gradient(circle at 70% 60%, rgba(157, 125, 255, 0.22), transparent 50%);
  filter: blur(40px);
  top: -120px;
  right: -80px;
  animation: orbFloat 18s ease-in-out infinite alternate;
  z-index: 0;
}
.orb2 {
  left: -100px;
  bottom: 10%;
  top: auto;
  right: auto;
  width: 400px;
  height: 400px;
  animation-duration: 22s;
  opacity: 0.7;
}

@keyframes orbFloat {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-30px, 40px) scale(1.05); }
}

.wrap {
  position: relative;
  z-index: 1;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

/* Nav */
.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  margin-bottom: 0.5rem;
  backdrop-filter: blur(14px);
  background: linear-gradient(to bottom, rgba(6, 7, 12, 0.92), rgba(6, 7, 12, 0.65));
  border-bottom: 1px solid var(--line);
}
[data-theme="light"] .nav {
  background: linear-gradient(to bottom, rgba(244, 245, 251, 0.95), rgba(244, 245, 251, 0.75));
}

.brand {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-decoration: none;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}
.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.82rem;
  font-family: var(--font-mono);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--accent); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-icon {
  border: 1px solid var(--line);
  background: var(--surface2);
  color: var(--text);
  border-radius: 10px;
  padding: 0.4rem 0.65rem;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}
.btn-icon:hover { border-color: var(--accent); }

/* Hero */
.hero {
  padding: 2.5rem 0 2rem;
  display: grid;
  gap: 2rem;
}
@media (min-width: 900px) {
  .hero {
    grid-template-columns: 1.25fr 1fr;
    align-items: center;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  border: 1px solid var(--line);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 12px var(--green);
  animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
  50% { opacity: 0.5; transform: scale(0.9); }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5.5vw, 3.4rem);
  font-weight: 400;
  line-height: 1.12;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
.hero h1 span {
  background: linear-gradient(120deg, var(--text), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 34rem;
  margin: 0 0 1.5rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}
.btn {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.55rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid var(--line);
  transition: transform 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(135deg, rgba(110, 140, 255, 0.35), rgba(157, 125, 255, 0.2));
  border-color: rgba(110, 140, 255, 0.45);
  color: var(--text);
  box-shadow: 0 8px 32px rgba(110, 140, 255, 0.15);
}
.btn-ghost {
  background: var(--surface2);
  color: var(--text);
}

.hero-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(12px);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  transform-style: preserve-3d;
  animation: panelIn 0.8s ease-out both;
}
@keyframes panelIn {
  from { opacity: 0; transform: translateY(16px) rotateX(4deg); }
  to { opacity: 1; transform: none; }
}

.hero-panel pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.55;
  color: var(--muted);
  overflow-x: auto;
}
.hero-panel .keyword { color: #ff79c6; }
.hero-panel .type { color: #8be9fd; }
.hero-panel .str { color: #f1fa8c; }

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 2rem 0;
}
@media (min-width: 640px) {
  .stats { grid-template-columns: repeat(4, 1fr); }
}
.stat {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  background: var(--surface2);
}
.stat b {
  display: block;
  font-family: var(--font-display);
  font-size: 1.65rem;
  font-weight: 400;
  background: linear-gradient(120deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat span {
  font-size: 0.78rem;
  color: var(--muted);
  font-family: var(--font-mono);
}

/* Section */
.section {
  margin: 3rem 0;
}
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.section-head h2 {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}
.section-head a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  text-decoration: none;
}
.section-head a:hover { text-decoration: underline; }

/* Featured */
.featured {
  display: grid;
  gap: 1rem;
}
@media (min-width: 768px) {
  .featured { grid-template-columns: repeat(3, 1fr); }
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  backdrop-filter: blur(10px);
  overflow: hidden;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(110, 140, 255, 0.35);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}
.card-thumb {
  height: 120px;
  background: linear-gradient(135deg, rgba(110, 140, 255, 0.25), rgba(157, 125, 255, 0.12), rgba(61, 214, 140, 0.08));
  position: relative;
}
.card-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='80' height='80'%3E%3Cpath d='M0 40h80M40 0v80' stroke='rgba(255,255,255,0.06)'/%3E%3C/svg%3E");
  opacity: 0.6;
}
.card-body { padding: 1rem 1.1rem 1.15rem; }
.card-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
  margin-bottom: 0.45rem;
}
.card h3 {
  margin: 0 0 0.45rem;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
}
.card p {
  margin: 0;
  font-size: 0.86rem;
  color: var(--muted);
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}
.tag {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  color: var(--muted);
}

/* Article list */
.article-grid {
  display: grid;
  gap: 0.65rem;
}
@media (min-width: 720px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
}

.article-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.85rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface2);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, background 0.15s;
}
.article-row:hover {
  border-color: rgba(110, 140, 255, 0.35);
  background: var(--surface);
}
.article-row time {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}
.article-row h4 {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 500;
}
.article-row .read {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
}

/* Code block */
.code-section {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0e1018;
  margin: 1rem 0;
}
[data-theme="light"] .code-section { background: #1a1d28; }
.code-bar {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--muted);
}
.code-bar span.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ff5f56;
}
.code-bar span.dot:nth-child(2) { background: #ffbd2e; }
.code-bar span.dot:nth-child(3) { background: #27ca40; }
.code-section pre {
  margin: 0;
  padding: 1rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  line-height: 1.55;
  overflow-x: auto;
  color: #cdd3e8;
}

/* Tags cloud */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.tags-cloud button,
.tags-cloud span.pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface2);
  color: var(--muted);
  cursor: default;
}
.tags-cloud span.pill.hot {
  border-color: rgba(110, 140, 255, 0.45);
  color: var(--accent);
}

/* Split layout */
.split {
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 860px) {
  .split { grid-template-columns: 1fr 280px; }
}

.sidebar-box {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
  background: var(--surface);
  margin-bottom: 1rem;
}
.sidebar-box h3 {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.sidebar-box ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
.sidebar-box li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.84rem;
  color: var(--muted);
}
.sidebar-box li:last-child { border-bottom: 0; }

/* Newsletter */
.newsletter {
  margin: 3rem 0;
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid rgba(110, 140, 255, 0.25);
  background: linear-gradient(135deg, rgba(110, 140, 255, 0.12), rgba(157, 125, 255, 0.06));
  text-align: center;
}
.newsletter h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 400;
}
.newsletter p {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.newsletter .fake-input {
  display: inline-flex;
  max-width: 320px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface2);
}
.newsletter input {
  flex: 1;
  border: 0;
  padding: 0.55rem 0.75rem;
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.newsletter input::placeholder { color: var(--muted); }
.newsletter button {
  border: 0;
  padding: 0 1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
}

/* Footer */
footer.site-foot {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 1.5rem;
}
@media (min-width: 640px) {
  footer.site-foot { grid-template-columns: 2fr 1fr 1fr; }
}
footer.site-foot h4 {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
footer.site-foot a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.86rem;
  display: block;
  padding: 0.2rem 0;
}
footer.site-foot a:hover { color: var(--accent); }

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}