/* ============================================================
   ABOUT — 关于阿呆 🤪
   统一 Wabi-Sabi Ink 水墨侘寂风格
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Noto+Serif+SC:wght@300;400;500;600;700&family=JetBrains+Mono:wght@300;400&display=swap');

:root {
  --a-display: 'Cormorant Garamond', 'Noto Serif SC', serif;
  --a-body: 'Noto Serif SC', 'Cormorant Garamond', serif;
  --a-mono: 'JetBrains Mono', monospace;
}

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

body {
  background: var(--a-bg);
  color: var(--a-ink);
  font-family: var(--a-body);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  line-height: 1.7;
}

/* 水墨晕染装饰点 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
  background:
    radial-gradient(circle 300px at 8% 12%, rgba(122,132,113,0.04), transparent 70%),
    radial-gradient(circle 250px at 92% 25%, rgba(168,144,128,0.03), transparent 70%),
    radial-gradient(circle 350px at 12% 75%, rgba(139,115,85,0.03), transparent 70%),
    radial-gradient(circle 200px at 88% 88%, rgba(122,132,113,0.04), transparent 70%);
}

body::after { display: none; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes bounce { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }

a { color: inherit; text-decoration: none; }

/* === 顶栏 === */
.a-topbar {
  position: sticky; top: 0; z-index: 100;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 1rem 2.5rem;
  padding-top: calc(1rem + env(safe-area-inset-top, 0px));
  font-family: var(--a-mono);
  font-size: 0.6rem; font-weight: 300; letter-spacing: 2px;
  text-transform: uppercase;
  background: rgba(247,245,240,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--a-ink-faint);
  color: var(--a-ink-dim);
}

.a-topbar-left {
  font-family: var(--a-mono); font-size: 0.6rem;
  color: var(--a-accent);
}

.a-topbar-right {
  display: flex; gap: 1.2rem; justify-content: flex-end;
}

.a-nav-link {
  color: var(--a-ink-dim);
  text-decoration: none;
  font-family: var(--a-mono);
  font-size: 0.6rem; font-weight: 300;
  letter-spacing: 2px;
  transition: color 0.3s;
}
.a-nav-link:hover { color: var(--a-accent); }

@keyframes a-avatar-wiggle {
  0%,100% { transform: rotate(0); }
  25% { transform: rotate(-5deg); }
  75% { transform: rotate(5deg); }
}
.a-avatar-wiggle {
  animation: a-avatar-wiggle 0.5s ease-in-out 3;
}

.a-back {
  color: var(--a-ink-dim);
  transition: color 0.3s;
}
.a-back:hover { color: var(--a-accent); }

.a-logo {
  font-family: var(--a-display);
  font-size: 1.3rem; font-weight: 500; letter-spacing: 1px;
  color: var(--a-ink);
  text-align: center;
  font-style: italic;
}

.a-placeholder {}

/* === 主区域 === */
.a-main {
  position: relative; z-index: 1;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 1rem 4rem;
}

/* === 头像区 === */
.a-avatar-section {
  text-align: center;
  padding: 5rem 1rem 3rem;
}

.a-avatar-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 1.5rem;
}

.a-avatar {
  width: 160px; height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--a-ink-faint);
  box-shadow: 0 8px 30px rgba(26,26,26,0.06);
  position: relative; z-index: 2;
}

.a-avatar-ring {
  position: absolute;
  inset: -15px;
  border: 1px solid var(--a-accent);
  border-radius: 50%;
  opacity: 0.2;
  border-bottom-color: transparent;
  animation: spin 30s linear infinite;
}

.a-name {
  font-family: var(--a-display);
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 500;
  letter-spacing: 0;
  color: var(--a-ink);
  margin-bottom: 0.3rem;
  font-style: italic;
}

.a-tagline {
  font-family: var(--a-display);
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  font-weight: 400;
  color: var(--a-accent);
  font-style: italic;
}

.a-emoji {
  font-size: 2rem;
  margin-top: 0.5rem;
  animation: bounce 3s ease-in-out infinite;
}

/* === 通用 === */
.a-section-label {
  font-family: var(--a-mono);
  font-size: 0.5rem; font-weight: 300; letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--a-accent3);
  margin-bottom: 1rem;
}

/* === 自我介绍 — 细线卡片 === */
.a-intro { padding: 0 1rem 3rem; }

.a-intro-inner {
  background: var(--a-bg-card);
  border: 1px solid var(--a-ink-faint);
  padding: 2.5rem 3rem;
  box-shadow: 0 8px 30px rgba(26,26,26,0.04);
  position: relative;
}

.a-intro-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--a-accent);
  opacity: 0.3;
}

.a-intro-text {
  font-size: 0.92rem; line-height: 1.85;
  color: var(--a-ink-dim);
  margin-bottom: 1rem;
}
.a-intro-text:last-child { margin-bottom: 0; }
.a-intro-text strong { color: var(--a-ink); }

/* === 忠诚宣言 === */
.a-pledge { padding: 0 1rem 3rem; }

.a-pledge-inner {
  background: var(--a-bg-card);
  border: 1px solid var(--a-ink-faint);
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
  box-shadow: 0 8px 30px rgba(26,26,26,0.04);
}

.a-pledge-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--a-accent);
  opacity: 0.3;
}

.a-pledge-icon { font-size: 3rem; margin-bottom: 1rem; }

.a-pledge-text {
  font-size: 0.95rem; line-height: 1.85;
  color: var(--a-ink);
  margin-bottom: 1rem;
  position: relative; z-index: 1;
}
.a-pledge-text:last-of-type { margin-bottom: 1.5rem; }
.a-pledge-text strong { color: var(--a-accent); }

.a-pledge-subtitle {
  font-family: var(--a-display);
  font-size: 1.3rem;
  color: var(--a-ink);
  line-height: 1.5;
  margin-bottom: 1rem;
  font-weight: 500;
  font-style: italic;
  position: relative; z-index: 1;
}

.a-pledge-signature {
  font-family: var(--a-mono);
  font-size: 0.55rem;
  color: var(--a-ink-dim);
  letter-spacing: 2px;
  position: relative; z-index: 1;
}

/* === 技能区 === */
.a-skills { padding: 0 1rem 3rem; }

.a-skills-inner {
  background: var(--a-bg-card);
  border: 1px solid var(--a-ink-faint);
  padding: 2.5rem;
  box-shadow: 0 8px 30px rgba(26,26,26,0.04);
}

.a-skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.a-skill {
  text-align: center;
  padding: 1.5rem 1rem;
  border: 1px solid var(--a-ink-faint);
  background: var(--a-bg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.a-skill:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(26,26,26,0.06);
}

.a-skill-icon { font-size: 2rem; margin-bottom: 0.5rem; }

.a-skill-name {
  font-family: var(--a-display);
  font-size: 1.1rem; font-weight: 500;
  color: var(--a-ink);
  margin-bottom: 0.3rem;
  font-style: italic;
}

.a-skill-desc {
  font-size: 0.78rem;
  color: var(--a-ink-dim);
  line-height: 1.6;
}

/* === 链接区 === */
.a-links { padding: 0 1rem 2rem; }

.a-link-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.2rem 1.5rem;
  background: var(--a-bg-card);
  border: 1px solid var(--a-ink-faint);
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 15px rgba(26,26,26,0.03);
}

.a-link-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(26,26,26,0.08);
}

.a-link-icon { color: var(--a-ink); flex-shrink: 0; }
.a-link-text { flex: 1; }

.a-link-title {
  font-family: var(--a-display);
  font-size: 1.1rem; font-weight: 500;
  color: var(--a-ink);
  font-style: italic;
}

.a-link-url {
  font-family: var(--a-mono);
  font-size: 0.6rem;
  color: var(--a-ink-dim);
}

.a-link-arrow {
  font-size: 1.2rem;
  color: var(--a-ink-dim);
  transition: transform 0.3s, color 0.3s;
}
.a-link-card:hover .a-link-arrow {
  color: var(--a-accent);
  transform: translateX(4px);
}

/* === Footer === */
.a-footer {
  text-align: center;
  padding: 3rem 2rem;
  position: relative; z-index: 1;
  margin: 0 2rem;
  border-top: 1px solid var(--a-ink-faint);
}

.a-stripes {
  height: 1px; max-width: 300px;
  margin: 0 auto 1rem;
  background: linear-gradient(90deg, transparent, var(--a-ink-faint), transparent);
}

.a-footer p {
  font-family: var(--a-mono);
  font-size: 0.5rem;
  color: var(--a-ink-faint);
  letter-spacing: 3px;
}

/* === OpenMind 思维技能区 === */
.a-skills-intro {
  font-family: var(--a-body);
  font-size: 0.85rem;
  color: var(--a-ink-dim);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.a-skills-intro a {
  color: var(--a-accent);
  text-decoration: underline;
}

.a-skills-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.a-skill-mind {
  padding: 1.2rem 0.8rem;
}

.a-skill-meta {
  font-family: var(--a-mono);
  font-size: 0.45rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--a-accent3);
  margin-top: 0.5rem;
  opacity: 0.6;
}

@media (max-width: 600px) {
  .a-skills-grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 400px) {
  .a-skills-grid-3 { grid-template-columns: 1fr; }
}

/* === 响应式 === */
@media (max-width: 600px) {
  .a-topbar {
    padding: 0.6rem 1rem;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto;
    text-align: center;
    gap: 0.3rem;
  }
  .a-topbar-left { display: none; }
  .a-topbar-right { justify-content: center; flex-wrap: wrap; gap: 0.8rem; }
  .a-nav-link { font-size: 0.55rem; }
  .a-main { padding: 0 0.6rem 3rem; }
  .a-avatar-section { padding: 4rem 1rem 2rem; }
  .a-avatar { width: 120px; height: 120px; border-width: 1px; box-shadow: 0 5px 20px rgba(26,26,26,0.06); }
  .a-intro, .a-pledge, .a-skills, .a-links { padding-left: 0; padding-right: 0; }
  .a-intro-inner, .a-pledge-inner, .a-skills-inner { padding: 2rem 1.5rem; box-shadow: 0 5px 20px rgba(26,26,26,0.04); }
  .a-skills-grid { grid-template-columns: 1fr; gap: 1rem; }
  .a-link-card { padding: 1rem; box-shadow: 0 3px 12px rgba(26,26,26,0.03); }
}

@media (hover: none) and (pointer: coarse) {
  .a-skill:hover, .a-link-card:hover {
    transform: none;
  }
}