/* ============================================================
   猫猫sama — 个人网站
   和风神狐 × 赛博极光 · 深色 AI 科技感
   ============================================================ */

/* ---------- Design Tokens ---------- */
:root {
  --bg: #0a0709;
  --bg-2: #110b0e;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-hover: rgba(255, 255, 255, 0.2);

  --text: #f6f0e8;
  --text-dim: #b3a7b2;
  --text-faint: #756a78;

  --gold: #ffc66e;
  --coral: #ff9e80;
  --pink: #ff8fab;
  --violet: #c9a9f5;

  --grad: linear-gradient(115deg, var(--gold), var(--coral) 42%, var(--pink) 78%);
  --grad-soft: linear-gradient(115deg, rgba(255,198,110,.5), rgba(255,158,128,.4) 42%, rgba(255,143,171,.5) 78%);

  --font-display: "Syne", "Shippori Mincho", "Noto Serif SC", serif;
  --font-body: "PingFang SC", "Hiragino Sans", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;

  --shadow-glow: 0 0 40px -12px rgba(255,158,128,.55), 0 0 80px -24px rgba(255,143,171,.35);
  --radius: 18px;
  --nav-h: 68px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
img, svg { display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: rgba(255, 143, 171, .3); }

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

svg.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }

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

/* ---------- 背景层 ---------- */
.bg { position: fixed; inset: 0; z-index: -2; overflow: hidden; background: var(--bg); }
.bg-orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .5; will-change: transform; }
.bg-orb-a { width: 46vw; height: 46vw; left: -12vw; top: -16vw; background: radial-gradient(circle, rgba(255,198,110,.20), transparent 65%); animation: orb-drift-a 26s ease-in-out infinite alternate; }
.bg-orb-b { width: 42vw; height: 42vw; right: -14vw; top: 6vw; background: radial-gradient(circle, rgba(255,143,171,.22), transparent 65%); animation: orb-drift-b 32s ease-in-out infinite alternate; }
.bg-orb-c { width: 36vw; height: 36vw; left: 20vw; bottom: -18vw; background: radial-gradient(circle, rgba(255,158,128,.16), transparent 65%); animation: orb-drift-c 38s ease-in-out infinite alternate; }
.bg-aurora {
  position: absolute; inset: -20%;
  background:
    conic-gradient(from 180deg at 50% 50%, rgba(255,198,110,.07), rgba(255,158,128,.06), rgba(255,143,171,.05), rgba(201,169,245,.06), rgba(255,198,110,.07));
  animation: aurora-rotate 60s linear infinite;
}
.bg-noise {
  position: absolute; inset: 0; opacity: .05; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes orb-drift-a { to { transform: translate(10vw, 8vh) scale(1.15); } }
@keyframes orb-drift-b { to { transform: translate(-8vw, -6vh) scale(1.1); } }
@keyframes orb-drift-c { to { transform: translate(-6vw, -10vh) scale(1.2); } }
@keyframes aurora-rotate { to { transform: rotate(360deg); } }

/* 光标光斑 */
.cursor-glow {
  position: fixed; width: 480px; height: 480px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255,158,128,.14), rgba(255,143,171,.07) 40%, transparent 70%);
  transform: translate(-50%, -50%); pointer-events: none; z-index: -1;
  transition: opacity .4s; opacity: 0;
}
@media (pointer: fine) { .cursor-glow { opacity: 1; } }
@media (pointer: coarse) { .cursor-glow { display: none; } }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h); display: flex; align-items: center; justify-content: space-between;
  padding: 0 clamp(18px, 4vw, 48px);
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 5, 8, .72);
  -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}
.nav-logo { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; letter-spacing: .02em; }
.logo-mark { width: 30px; height: 30px; color: var(--gold); }
.logo-text { font-size: 19px; }
.logo-text em { font-style: normal; }

.nav-links { display: flex; gap: clamp(18px, 3vw, 40px); }
.nav-links a {
  position: relative; font-size: 15px; color: var(--text-dim);
  transition: color .25s; padding: 6px 2px;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0; height: 2px; width: 100%;
  background: var(--grad); transform: scaleX(0); transform-origin: left; transition: transform .3s;
  border-radius: 2px;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
  font-size: 13.5px; padding: 7px 14px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-dim);
  transition: color .25s, border-color .25s, box-shadow .25s;
}
.lang-toggle:hover { color: var(--text); border-color: var(--border-hover); box-shadow: var(--shadow-glow); }

.menu-toggle { display: none; width: 40px; height: 40px; align-items: center; justify-content: center; border-radius: 10px; color: var(--text); }
.menu-toggle svg { width: 22px; height: 22px; }
.menu-toggle .ic-close { display: none; }
.menu-toggle.open .ic-open { display: none; }
.menu-toggle.open .ic-close { display: block; }

/* ---------- 通用容器 ---------- */
main { position: relative; }
.section { max-width: 1180px; margin: 0 auto; padding: clamp(72px, 12vh, 132px) clamp(20px, 5vw, 48px); }

.section-head { display: flex; align-items: center; gap: 18px; margin-bottom: clamp(34px, 6vh, 56px); }
.section-index {
  font-family: var(--font-display); font-weight: 700; font-size: 15px; letter-spacing: .12em;
  color: var(--gold); border: 1px solid rgba(255,184,107,.35); padding: 4px 10px; border-radius: 999px;
}
.section-title { font-family: var(--font-display); font-size: clamp(30px, 4.6vw, 46px); font-weight: 700; letter-spacing: .02em; }
.section-line { flex: 1; height: 1px; background: linear-gradient(90deg, var(--border), transparent); }

/* ---------- Reveal 动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.16,1,.3,1), transform .8s cubic-bezier(.16,1,.3,1); }
.reveal.visible { opacity: 1; transform: none; }

/* ---------- Hero ---------- */
.hero { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; position: relative; }
.hero-inner {
  max-width: 1180px; margin: 0 auto; padding: calc(var(--nav-h) + 20px) clamp(20px, 5vw, 48px) 60px;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(28px, 5vw, 72px); align-items: center;
}
.hero-copy { display: flex; flex-direction: column; align-items: flex-start; gap: 20px; }

.hero-kicker {
  display: flex; align-items: center; gap: 10px;
  font-size: 14.5px; letter-spacing: .08em; color: var(--text-dim);
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--border);
  background: rgba(255,255,255,.03);
}
.hero-kicker .grad { -webkit-background-clip: initial; background-clip: initial; color: var(--gold); }

.hero-title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(56px, 11vw, 124px); line-height: 1; letter-spacing: -.01em;
  display: flex; align-items: baseline; flex-wrap: wrap;
}
.hero-title span:first-child { font-size: .82em; color: var(--text); }

.hero-sub { font-size: clamp(17px, 2vw, 21px); color: var(--text-dim); max-width: 30em; }

.hero-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px; border-radius: 999px; font-size: 14px;
  border: 1px solid rgba(255,143,171,.35); color: var(--pink);
  background: rgba(255,143,171,.06);
}
.tag svg { width: 14px; height: 14px; color: var(--gold); }

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 8px; }
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  transition: transform .25s, box-shadow .25s, background .25s, border-color .25s;
  cursor: pointer;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  background: var(--grad); color: #1a1206;
  box-shadow: 0 6px 24px -10px rgba(255,143,171,.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px -10px rgba(179,157,255,.75); }
.btn-ghost { border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--border-hover); background: var(--surface-2); transform: translateY(-2px); }

/* Hero 头像 */
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; }
.avatar-halo {
  position: absolute; top: 50%; left: 50%; width: min(80%, 430px); aspect-ratio: 1;
  border-radius: 32px;
  background: conic-gradient(from 0deg, var(--gold), var(--coral), var(--pink), var(--gold));
  filter: blur(50px); opacity: .5;
  transform: translate(-50%, -50%);
  animation: halo-spin 14s linear infinite;
}
.avatar-ring {
  position: absolute; top: 50%; left: 50%; width: min(90%, 500px); aspect-ratio: 1;
  border-radius: 38px;
  border: 1px dashed rgba(255,255,255,.16);
  transform: translate(-50%, -50%);
  animation: halo-spin 40s linear infinite reverse;
}
.avatar-frame {
  position: relative; width: min(74%, 400px); aspect-ratio: 1;
  padding: 7%; border-radius: 26px;
  background: rgba(20, 14, 16, .45);
  border: 1px solid rgba(255,255,255,.14);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  box-shadow: 0 24px 60px -20px rgba(0,0,0,.7);
  animation: avatar-float 6s ease-in-out infinite;
}
.avatar {
  width: 100%; height: 100%; object-fit: contain;
  border-radius: 12px;
}
.avatar-spark { position: absolute; color: var(--gold); width: 22px; height: 22px; filter: drop-shadow(0 0 8px rgba(255,184,107,.8)); animation: spark-twinkle 3.5s ease-in-out infinite; }
.spark-a { top: 12%; left: 6%; }
.spark-b { top: 30%; right: 2%; color: var(--violet); animation-delay: -1.2s; }
.spark-c { bottom: 8%; left: 16%; color: var(--coral); animation-delay: -2.4s; }

@keyframes halo-spin { to { transform: translate(-50%, -50%) rotate(360deg); } }
@keyframes avatar-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}
@keyframes spark-twinkle {
  0%, 100% { opacity: .3; transform: scale(.8); }
  50% { opacity: 1; transform: scale(1.15); }
}

/* 滚动提示 */
.scroll-hint {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  color: var(--text-faint); font-size: 13px; letter-spacing: .14em;
  transition: color .3s;
}
.scroll-hint svg { width: 20px; height: 20px; animation: scroll-bob 2s ease-in-out infinite; }
.scroll-hint:hover { color: var(--text-dim); }
@keyframes scroll-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* ---------- 关于 ---------- */
.about-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
.about-copy { display: flex; flex-direction: column; gap: 20px; font-size: 17px; color: var(--text-dim); }
.about-copy p { max-width: 34em; }
.about-quote {
  position: relative; padding: 30px 28px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
}
.quote-mark { width: 34px; height: 34px; color: var(--gold); opacity: .85; margin-bottom: 14px; }
.about-quote blockquote { font-family: var(--font-display); font-size: 22px; font-weight: 700; line-height: 1.5; color: var(--text); }
.about-quote figcaption { margin-top: 14px; color: var(--text-faint); font-size: 14px; letter-spacing: .04em; }

/* ---------- 卡片通用 ---------- */
.card {
  position: relative; border-radius: var(--radius); padding: 30px 28px;
  border: 1px solid var(--border); background: var(--surface);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  transition: transform .35s cubic-bezier(.16,1,.3,1), border-color .35s, box-shadow .35s, background .35s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; opacity: 0;
  background: radial-gradient(420px circle at var(--mx, 50%) var(--my, 50%), rgba(179,157,255,.14), transparent 45%);
  transition: opacity .4s; pointer-events: none;
}
.card:hover { transform: translateY(-5px); border-color: var(--border-hover); box-shadow: var(--shadow-glow); background: var(--surface-2); }
.card:hover::before { opacity: 1; }

.card-icon {
  width: 52px; height: 52px; border-radius: 14px; display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); background: rgba(255,255,255,.05);
}
.card-icon svg { width: 26px; height: 26px; }
.ic-python { color: var(--gold); }
.ic-ai { color: var(--pink); }
.ic-godot { color: var(--coral); }
.ic-tauri { color: var(--coral); }
.ic-bot { color: var(--pink); }
.ic-galgame { color: var(--gold); }
.ic-mail { color: var(--pink); }

.card-title { font-family: var(--font-display); font-size: 22px; font-weight: 700; margin: 20px 0 10px; }
.card-desc { color: var(--text-dim); font-size: 15px; }

/* ---------- 技能 ---------- */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.skill-card { display: flex; flex-direction: column; }
.skill-bar { height: 6px; border-radius: 999px; background: rgba(255,255,255,.08); margin: 20px 0 12px; overflow: hidden; }
.skill-bar i {
  display: block; height: 100%; width: 0; border-radius: inherit;
  background: var(--grad); transition: width 1.1s cubic-bezier(.16,1,.3,1) .3s;
}
.skill-card.visible .skill-bar i { width: var(--w); }
.skill-lvl { font-size: 13px; color: var(--text-faint); letter-spacing: .06em; margin-top: auto; }

/* ---------- 项目 ---------- */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.project-top { display: flex; align-items: center; justify-content: space-between; }
.project-tag {
  font-size: 13px; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--text-dim);
}
.project-en { font-size: .72em; color: var(--text-faint); font-weight: 500; }
.project-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip { font-size: 12.5px; padding: 5px 12px; border-radius: 999px; background: rgba(255,255,255,.06); border: 1px solid var(--border); color: var(--text-dim); }

/* ---------- 联系 ---------- */
.contact-section { display: flex; flex-direction: column; align-items: center; text-align: center; }
.contact-section .section-head { justify-content: center; }
.contact-inner { width: 100%; max-width: 620px; display: flex; flex-direction: column; align-items: center; gap: 22px; }
.contact-lead { color: var(--text-dim); font-size: 16.5px; max-width: 30em; }
.contact-card {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 26px 30px; text-align: left; cursor: pointer;
}
.contact-card.copied { border-color: var(--gold); box-shadow: 0 0 0 1px rgba(255,184,107,.4), var(--shadow-glow); }
.contact-mail { display: flex; align-items: center; gap: 16px; }
.contact-addr { font-family: var(--font-display); font-size: clamp(17px, 3vw, 22px); font-weight: 600; word-break: break-all; }
.contact-actions { display: flex; align-items: center; gap: 12px; color: var(--text-faint); }
.copy-ic { width: 20px; height: 20px; transition: color .3s; }
.contact-card:hover .copy-ic { color: var(--gold); }
.copy-tip { font-size: 13px; }
.contact-note { display: flex; align-items: center; gap: 8px; color: var(--text-faint); font-size: 14px; }
.contact-note svg { width: 17px; height: 17px; color: var(--gold); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 30px clamp(20px, 5vw, 48px); }
.footer-inner {
  max-width: 1180px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.footer-logo { display: flex; align-items: center; gap: 9px; font-family: var(--font-display); font-weight: 700; }
.footer-logo svg { width: 24px; height: 24px; color: var(--gold); }
.footer-copy { display: flex; align-items: center; gap: 10px; color: var(--text-faint); font-size: 14px; }
.footer-copy a { display: inline-flex; align-items: center; gap: 6px; color: var(--text-dim); transition: color .25s; }
.footer-copy a:hover { color: var(--text); }
.footer-copy svg { width: 16px; height: 16px; }
.footer-dot { color: var(--text-faint); }
.footer-top { display: flex; align-items: center; justify-content: center; width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--border); color: var(--text-dim); transition: all .3s; }
.footer-top svg { width: 20px; height: 20px; }
.footer-top:hover { color: var(--text); border-color: var(--border-hover); box-shadow: var(--shadow-glow); transform: translateY(-3px); }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-copy { align-items: center; }
  .hero-title { justify-content: center; }
  .hero-cta { justify-content: center; }
  .hero-kicker { justify-content: center; }
  .hero-visual { order: -1; }
  .about-grid, .skills-grid, .projects-grid { grid-template-columns: 1fr; }
  .about-copy p { max-width: none; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; gap: 0; background: rgba(5,5,8,.96);
    border-bottom: 1px solid var(--border); padding: 8px 24px 18px;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .25s, transform .25s;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 14px 4px; border-bottom: 1px solid rgba(255,255,255,.05); }
  .nav-links a:last-child { border-bottom: 0; }
  .menu-toggle { display: flex; }
  .scroll-hint { display: none; }
}
@media (max-width: 480px) {
  .section { padding-top: 64px; padding-bottom: 64px; }
  .hero-inner { padding-bottom: 40px; }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
}