/* ============================================================
   Hopzz · 个人主页样式
   纯手写 CSS，无框架、无外部字体（保证国内访问也快）
   ============================================================ */

/* ---------- 变量：深色（默认） ---------- */
:root {
  --bg: #0a0e14;
  --bg-soft: #0f141c;
  --card: rgba(255, 255, 255, 0.035);
  --card-line: rgba(255, 255, 255, 0.09);
  --text: #e8edf5;
  --text-dim: #94a3b5;
  --text-faint: #647084;
  --accent: #3ef0c0;
  --accent-2: #5b8cff;
  --grad: linear-gradient(100deg, var(--accent) 0%, var(--accent-2) 100%);
  --shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.8);
  --radius: 18px;
  --max: 1120px;
  --nav-h: 68px;
}

/* ---------- 变量：浅色 ---------- */
html[data-theme="light"] {
  --bg: #f7f9fc;
  --bg-soft: #ffffff;
  --card: rgba(255, 255, 255, 0.85);
  --card-line: rgba(15, 23, 42, 0.1);
  --text: #101828;
  --text-dim: #55637a;
  --text-faint: #7d8aa0;
  --accent: #08b489;
  --accent-2: #2f6bff;
  --shadow: 0 18px 50px -24px rgba(16, 24, 40, 0.35);
}

/* ---------- 基础 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", Roboto, sans-serif;
  line-height: 1.72;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background 0.35s ease, color 0.35s ease;
}

a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3 { margin: 0; line-height: 1.2; letter-spacing: -0.02em; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

::selection { background: var(--accent); color: #04120e; }

/* ---------- 背景装饰 ---------- */
.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(148, 163, 181, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 163, 181, 0.07) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 90% 60% at 50% 0%, #000 30%, transparent 78%);
}

html[data-theme="light"] .bg-grid {
  background-image:
    linear-gradient(to right, rgba(15, 23, 42, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.055) 1px, transparent 1px);
}

.bg-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.5;
}
.bg-glow--1 {
  width: 46vw; height: 46vw; min-width: 320px; min-height: 320px;
  top: -16vw; left: -8vw;
  background: radial-gradient(circle, rgba(62, 240, 192, 0.35), transparent 68%);
}
.bg-glow--2 {
  width: 40vw; height: 40vw; min-width: 300px; min-height: 300px;
  top: 22vh; right: -12vw;
  background: radial-gradient(circle, rgba(91, 140, 255, 0.3), transparent 68%);
}
html[data-theme="light"] .bg-glow { opacity: 0.32; }

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 clamp(18px, 4vw, 44px);
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom-color: var(--card-line);
}

.brand {
  font-weight: 800;
  font-size: 1.12rem;
  letter-spacing: -0.03em;
}
.brand-dot { color: var(--accent); }

.nav-links {
  display: flex;
  gap: clamp(14px, 2.4vw, 30px);
  font-size: 0.9rem;
  color: var(--text-dim);
}
.nav-links a {
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1.5px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); }

.theme-btn {
  flex: none;
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1px solid var(--card-line);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.theme-btn:hover { border-color: var(--accent); transform: rotate(-12deg); }
.theme-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.icon-sun { display: none; }
html[data-theme="light"] .icon-sun { display: block; }
html[data-theme="light"] .icon-moon { display: none; }

/* ---------- 通用容器 ---------- */
main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 clamp(18px, 4vw, 44px);
}

.section { padding: clamp(56px, 9vw, 104px) 0 0; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.section-no {
  font-variant-numeric: tabular-nums;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--accent);
  opacity: 0.85;
}
.section-head h2 {
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 800;
}
.section-desc {
  flex-basis: 100%;
  margin: 0;
  color: var(--text-dim);
  font-size: 0.94rem;
}

/* ---------- 首屏 ---------- */
.hero {
  min-height: min(88vh, 780px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: calc(var(--nav-h) + 40px);
  padding-bottom: 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  align-self: flex-start;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--text-dim);
  border: 1px solid var(--card-line);
  background: var(--card);
  padding: 6px 14px 6px 11px;
  border-radius: 999px;
  margin: 0 0 22px;
}

.pulse {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(62, 240, 192, 0.65);
  animation: pulse 2.2s infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(62, 240, 192, 0.6); }
  70%  { box-shadow: 0 0 0 9px rgba(62, 240, 192, 0); }
  100% { box-shadow: 0 0 0 0 rgba(62, 240, 192, 0); }
}

.hero h1 {
  font-size: clamp(2.4rem, 7.2vw, 4.4rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin: 0 0 18px;
}

.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  max-width: 58ch;
  font-size: clamp(1rem, 1.6vw, 1.12rem);
  color: var(--text-dim);
  margin-bottom: 30px;
}

.cta { display: flex; flex-wrap: wrap; gap: 12px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 22px;
  border-radius: 999px;
  font-size: 0.94rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.25s ease, background 0.2s ease,
    border-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

.btn--primary {
  background: var(--grad);
  color: #04120e;
  box-shadow: 0 12px 34px -14px rgba(62, 240, 192, 0.7);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 42px -14px rgba(62, 240, 192, 0.85);
}

.btn--ghost {
  border-color: var(--card-line);
  background: var(--card);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 5vw, 52px);
  margin-top: clamp(38px, 6vw, 62px);
  padding-top: 26px;
  border-top: 1px solid var(--card-line);
}
.hero-meta li { display: flex; flex-direction: column; gap: 2px; }
.hero-meta strong {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.hero-meta span { font-size: 0.8rem; color: var(--text-faint); }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  padding: clamp(20px, 3vw, 30px);
  box-shadow: var(--shadow);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

/* ---------- 关于 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.55fr 1fr;
  gap: 18px;
  align-items: start;
}
.about-grid .card p { color: var(--text-dim); }
.about-grid .card p + p { margin-top: 0.9em; }

.card--facts dl { margin: 0; display: grid; gap: 15px; }
.card--facts dl > div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 13px;
  border-bottom: 1px dashed var(--card-line);
}
.card--facts dl > div:last-child { border-bottom: 0; padding-bottom: 0; }
.card--facts dt { font-size: 0.82rem; color: var(--text-faint); }
.card--facts dd { margin: 0; font-size: 0.9rem; font-weight: 600; text-align: right; }

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
}
.badge--on {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
}

/* ---------- 技能 ---------- */
.skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.skill-group h3 {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 13px;
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips li {
  font-size: 0.86rem;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--card-line);
  color: var(--text);
  transition: border-color 0.22s ease, color 0.22s ease, transform 0.22s ease;
}
.chips li:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- 作品 ---------- */
.projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.project {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--card-line);
  border-radius: var(--radius);
  padding: clamp(20px, 2.6vw, 26px);
  box-shadow: var(--shadow);
  transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}
.project::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.project:hover { transform: translateY(-4px); border-color: color-mix(in srgb, var(--accent) 40%, var(--card-line)); }
.project:hover::before { transform: scaleX(1); }

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 13px;
}
.project-tag {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 32%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  padding: 3px 9px;
  border-radius: 6px;
}
.project-year { font-size: 0.76rem; color: var(--text-faint); font-variant-numeric: tabular-nums; }
.project h3 { font-size: 1.08rem; font-weight: 700; margin-bottom: 9px; }
.project p { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 16px; }

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}
.project-stack li {
  font-size: 0.74rem;
  color: var(--text-faint);
  border: 1px solid var(--card-line);
  padding: 3px 8px;
  border-radius: 5px;
}

/* ---------- 实时数据 ---------- */
.live-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.live-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}
.live-head h3 { font-size: 1rem; font-weight: 700; }

.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--text-faint);
  flex: none;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}
.dot--ok {
  background: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
}
.dot--bad { background: #ff5c72; box-shadow: 0 0 0 3px rgba(255, 92, 114, 0.2); }

.meters { display: grid; gap: 17px; }
.meter-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--text-dim);
  margin-bottom: 7px;
}
.meter-label b { color: var(--text); font-variant-numeric: tabular-nums; font-weight: 700; }

.meter-bar {
  height: 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--text) 9%, transparent);
  overflow: hidden;
}
.meter-bar i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--grad);
  transition: width 0.7s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.meter-bar i.is-high { background: linear-gradient(100deg, #ffb020, #ff5c72); }

.live-foot {
  margin: 18px 0 0;
  font-size: 0.78rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

.env {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  padding: 6px 0 2px;
}
.env-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px;
  padding: 14px 16px;
  border-radius: 13px;
  background: color-mix(in srgb, var(--text) 4%, transparent);
  border: 1px solid var(--card-line);
}
.env-num {
  font-size: clamp(1.7rem, 4vw, 2.2rem);
  font-weight: 800;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
}
.env-unit { font-size: 0.92rem; color: var(--text-dim); font-weight: 600; }
.env-name {
  flex-basis: 100%;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 6px;
}

/* ---------- 联系 ---------- */
.contact { text-align: center; }
.contact p { color: var(--text-dim); margin-bottom: 22px; }
.contact-links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

/* ---------- 页脚 ---------- */
.foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 64px clamp(18px, 4vw, 44px) 44px;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.82rem;
}
.foot p { margin: 0 0 6px; }
.foot-dim { opacity: 0.7; }

/* ---------- 滚动进场动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s cubic-bezier(0.2, 0.8, 0.2, 1),
    transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .pulse { animation: none; }
  * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .about-grid,
  .live-grid { grid-template-columns: 1fr; }
  .skills { grid-template-columns: 1fr 1fr; }
  .projects { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .nav-links { display: none; }
  .hero { min-height: auto; padding-top: calc(var(--nav-h) + 48px); padding-bottom: 40px; }
  .hero-meta { gap: 22px 30px; }
  .skills { grid-template-columns: 1fr; }
  .section { padding-top: 52px; }
  .foot { padding-top: 48px; }
}

@media (max-width: 420px) {
  .env { grid-template-columns: 1fr; }
  .btn { width: 100%; }
}