/* ============================================================
   晴天Kauai · 个人主页
   设计：浅色 · 简约 · 优雅动效 · 可滚动多区块
   制作：DeepSeek Harness
   ============================================================ */

/* ---------- 基础 ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #fbfcfe;
  --bg-soft: #f4f6fb;
  --text: #20242e;
  --text-dim: #5b6472;
  --text-faint: #9aa3b2;
  --accent: #4f6ef7;
  --accent-2: #8b5cf6;
  --accent-soft: rgba(79, 110, 247, .10);
  --grad: linear-gradient(120deg, var(--accent), var(--accent-2));
  --line: rgba(32, 36, 46, .09);
  --card: #ffffff;
  --shadow-sm: 0 4px 14px rgba(32, 36, 46, .06);
  --shadow-md: 0 16px 38px rgba(32, 36, 46, .10);
  --radius: 16px;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "JetBrains Mono",
          Consolas, Menlo, monospace;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
    "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection {
  background: rgba(79, 110, 247, .18);
  color: var(--text);
}

a {
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 8px;
}

.container {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 110px 0;
  scroll-margin-top: 72px;
}

.mono {
  font-family: var(--mono);
}

.sec-label {
  color: var(--accent);
  font-size: .82rem;
  letter-spacing: .18em;
  margin-bottom: 10px;
}

.sec-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: .02em;
  margin-bottom: 20px;
}

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

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  will-change: transform;
}

.orb-a {
  width: 480px;
  height: 480px;
  left: -140px;
  top: -140px;
  background: radial-gradient(circle at 35% 35%, rgba(79, 110, 247, .16), transparent 70%);
  animation: drift-a 26s ease-in-out infinite alternate;
}

.orb-b {
  width: 520px;
  height: 520px;
  right: -180px;
  bottom: -180px;
  background: radial-gradient(circle at 60% 40%, rgba(139, 92, 246, .13), transparent 70%);
  animation: drift-b 32s ease-in-out infinite alternate;
}

.orb-c {
  width: 420px;
  height: 420px;
  left: 55%;
  top: 42%;
  background: radial-gradient(circle at 50% 50%, rgba(56, 189, 248, .11), transparent 70%);
  animation: drift-c 24s ease-in-out infinite alternate;
}

@keyframes drift-a { to { transform: translate(80px, 60px) scale(1.1); } }
@keyframes drift-b { to { transform: translate(-90px, -50px) scale(1.08); } }
@keyframes drift-c { to { transform: translate(-60px, 70px) scale(1.12); } }

/* ---------- 顶部导航 ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 62px;
  padding: 0 28px;
  background: rgba(251, 252, 254, .78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}

.nav.scrolled {
  border-bottom-color: var(--line);
  box-shadow: 0 6px 24px rgba(32, 36, 46, .05);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 700;
  letter-spacing: .03em;
  text-decoration: none;
}

.logo-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 10px rgba(79, 110, 247, .5);
}

.nav-links {
  display: flex;
  gap: 26px;
}

.nav-links a {
  position: relative;
  padding: 4px 2px;
  font-size: .92rem;
  color: var(--text-dim);
  text-decoration: none;
  transition: color .3s;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .35s cubic-bezier(.22, 1, .36, 1);
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { transform: scaleX(1); }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 110px 0 90px;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.avatar {
  position: relative;
  width: 118px;
  height: 118px;
  margin-bottom: 34px;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  box-shadow:
    0 0 0 5px #fff,
    0 0 0 6px var(--line),
    0 18px 40px rgba(32, 36, 46, .14);
  animation: floaty 7s ease-in-out infinite;
}

.avatar .ring {
  position: absolute;
  inset: -14px;
  border-radius: 50%;
  border: 1.5px dashed rgba(79, 110, 247, .35);
  animation: spin 24s linear infinite;
  pointer-events: none;
}

@keyframes floaty {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hello {
  color: var(--accent);
  font-size: .95rem;
  letter-spacing: .06em;
  margin-bottom: 10px;
}

.name {
  font-size: clamp(2.5rem, 7vw, 3.6rem);
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.15;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.typed {
  margin-top: 14px;
  min-height: 1.9em;
  font-family: var(--mono);
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  color: var(--text-dim);
}

.caret {
  display: inline-block;
  width: 9px;
  height: 1.15em;
  margin-left: 4px;
  vertical-align: -.18em;
  background: var(--accent);
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

.bio {
  margin-top: 16px;
  max-width: 52ch;
  color: var(--text-dim);
  font-size: 1rem;
}

.hero-actions {
  margin-top: 34px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: .72em 1.7em;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  transition:
    transform .3s cubic-bezier(.22, 1, .36, 1),
    box-shadow .3s,
    border-color .3s,
    color .3s;
}

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 22px rgba(79, 110, 247, .30);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(79, 110, 247, .38);
}

.btn-ghost {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text-dim);
}

.btn-ghost:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}

/* 向下滚动提示 */
.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-faint);
  font-size: .78rem;
  letter-spacing: .1em;
  text-decoration: none;
}

.scroll-hint svg {
  width: 18px;
  height: 18px;
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(6px); }
}

/* ---------- 关于我 ---------- */
.about {
  background: var(--bg-soft);
}

.about-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 52px;
  align-items: center;
}

.about-text p {
  color: var(--text-dim);
  margin-top: 14px;
}

.about-text p:first-of-type {
  margin-top: 0;
}

/* 终端卡片 */
.terminal {
  overflow: hidden;
  border-radius: 14px;
  background: #171c26;
  box-shadow: var(--shadow-md);
  font-family: var(--mono);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  background: #202736;
}

.terminal-bar .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.terminal-bar .dot:nth-child(1) { background: #ff5f57; }
.terminal-bar .dot:nth-child(2) { background: #febc2e; }
.terminal-bar .dot:nth-child(3) { background: #28c840; }

.term-title {
  margin-left: auto;
  color: #7d8798;
  font-size: .75rem;
  letter-spacing: .05em;
}

.terminal-body {
  padding: 18px 20px 20px;
  font-size: .9rem;
  line-height: 1.9;
  color: #e6edf3;
}

.terminal-body .prompt {
  color: #a78bfa;
  margin-right: 8px;
}

.terminal-body .out {
  color: #7d8798;
  padding-left: 18px;
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  background: #a78bfa;
  vertical-align: -2px;
  animation: blink 1s steps(1) infinite;
}

/* ---------- 找到我 ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 18px;
  margin-top: 14px;
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid var(--line);
  text-decoration: none;
  transition:
    transform .35s cubic-bezier(.22, 1, .36, 1),
    box-shadow .35s,
    border-color .35s;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(79, 110, 247, .35);
}

.card-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 11px;
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 8px;
}

.card-icon svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.card-name {
  font-weight: 700;
  font-size: 1.02rem;
}

.card-handle {
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--text-faint);
}

.card-arrow {
  position: absolute;
  top: 22px;
  right: 22px;
  color: var(--text-faint);
  font-size: 1.05rem;
  transition: transform .35s cubic-bezier(.22, 1, .36, 1), color .35s;
}

.card:hover .card-arrow {
  transform: translate(3px, -3px);
  color: var(--accent);
}

/* ---------- 联系我 ---------- */
.contact-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.contact-desc {
  color: var(--text-dim);
  margin-top: 6px;
}

.contact-mail {
  margin-top: 22px;
  display: inline-block;
  font-family: var(--mono);
  font-size: clamp(1.1rem, 3.2vw, 1.45rem);
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  padding-bottom: 6px;
  background-image: var(--grad);
  background-size: 0% 2px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size .4s cubic-bezier(.22, 1, .36, 1), color .3s;
}

.contact-mail:hover {
  background-size: 100% 2px;
  color: var(--accent);
}

/* ---------- 页脚 ---------- */
.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 26px 30px;
  border-top: 1px solid var(--line);
  color: var(--text-faint);
  font-size: .82rem;
}

.foot .made b {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- 滚动入场动画（由 JS 添加 .in） ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity .8s cubic-bezier(.22, 1, .36, 1),
    transform .8s cubic-bezier(.22, 1, .36, 1);
  transition-delay: var(--d, 0s);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 小屏适配 ---------- */
@media (max-width: 760px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .section {
    padding: 84px 0;
  }

  .nav {
    padding: 0 18px;
  }

  .nav-links {
    gap: 18px;
  }

  .foot {
    justify-content: center;
    text-align: center;
  }
}

/* ---------- 尊重系统“减弱动态效果” ---------- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}