/* ============================================================
   PENGZHU — a personal tribute site
   Warm paper palette, letter/journal layout concept.
   ============================================================ */
:root{
  --paper:#faf3e9;
  --paper-soft:#f3ead9;
  --card:#fffbf4;
  --line:#e6d8c2;
  --ink:#3a2e28;
  --ink-dim:#75655a;
  --ink-faint:#a3927f;
  --terracotta:#d98e73;
  --terracotta-soft:rgba(217,142,115,0.14);
  --sage:#8fa686;
  --sage-soft:rgba(143,166,134,0.16);
  --gold:#e8b94f;
  --gold-soft:rgba(232,185,79,0.18);

  --font-display:'Fraunces', Georgia, serif;
  --font-body:'Karla', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
button{font-family:inherit;cursor:pointer;}

::selection{background:var(--terracotta-soft);}
::-webkit-scrollbar{width:10px;}
::-webkit-scrollbar-track{background:var(--paper);}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:8px;}
::-webkit-scrollbar-thumb:hover{background:var(--terracotta);}
:focus-visible{outline:2px solid var(--terracotta);outline-offset:3px;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;transition-duration:0.001ms !important;}
  html{scroll-behavior:auto;}
}

.app-shell{min-height:100vh;display:flex;flex-direction:column;}
main{flex:1;}
.page-wrap{max-width:760px;margin:0 auto;padding:0 28px;}
.page-wrap-wide{max-width:980px;margin:0 auto;padding:0 28px;}

/* ---------- Header ---------- */
.site-header{
  display:flex;align-items:center;justify-content:space-between;
  padding:28px 32px;
  max-width:980px;margin:0 auto;
}
.brand{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-display);
  font-size:19px;font-weight:600;
  letter-spacing:0.2px;
}
.brand .mark{width:30px;height:30px;flex-shrink:0;}
.brand .mark svg{width:100%;height:100%;}
.brand .terracotta-text{color:var(--terracotta);}

.main-nav{display:flex;align-items:center;gap:28px;font-size:14px;color:var(--ink-dim);}
.main-nav a{transition:color .2s;position:relative;}
.main-nav a:hover, .main-nav a.active{color:var(--terracotta);}

.menu-toggle-btn{display:none;background:none;border:1px solid var(--line);border-radius:8px;width:36px;height:36px;align-items:center;justify-content:center;color:var(--ink);}
.menu-toggle-btn svg{width:16px;height:16px;}

@media (max-width:680px){
  .main-nav{
    position:fixed;top:78px;left:0;right:0;
    flex-direction:column;align-items:flex-start;
    background:var(--paper);border-bottom:1px solid var(--line);
    padding:18px 28px;gap:16px;display:none;z-index:49;
  }
  .main-nav.open{display:flex;}
  .menu-toggle-btn{display:flex;}
}

/* ---------- Footer ---------- */
.site-footer{
  padding:50px 28px 40px;
  text-align:center;
  border-top:1px solid var(--line);
  margin-top:60px;
}
.site-footer .footer-line{font-family:var(--font-display);font-style:italic;color:var(--ink-dim);font-size:15px;margin-bottom:10px;}
.site-footer .footer-meta{font-size:12.5px;color:var(--ink-faint);}

/* ---------- Hero (breathing glow signature) ---------- */
.hero{
  padding:60px 0 70px;
  text-align:center;
  position:relative;
}
.glow-wrap{
  width:180px;height:180px;
  margin:0 auto 32px auto;
  position:relative;
  display:flex;align-items:center;justify-content:center;
}
.glow-ring{
  position:absolute;inset:0;
  border-radius:50%;
  background:radial-gradient(circle, var(--terracotta-soft) 0%, transparent 70%);
  animation:breathe 5s ease-in-out infinite;
}
.glow-ring.ring2{
  background:radial-gradient(circle, var(--gold-soft) 0%, transparent 65%);
  animation-delay:1.2s;
  animation-duration:6s;
}
@keyframes breathe{
  0%,100%{transform:scale(0.9);opacity:0.7;}
  50%{transform:scale(1.08);opacity:1;}
}
.glow-symbol{
  position:relative;z-index:1;
  width:64px;height:64px;
  color:var(--terracotta);
}
.glow-symbol svg{width:100%;height:100%;}

.hero .eyebrow{
  font-family:var(--font-display);
  font-style:italic;
  font-size:15px;
  color:var(--ink-dim);
  margin-bottom:14px;
}
.hero h1{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(36px,7vw,58px);
  letter-spacing:-0.5px;
  line-height:1.1;
  margin-bottom:20px;
}
.hero h1 .terracotta-text{color:var(--terracotta);font-style:italic;}
.hero p.lede{
  color:var(--ink-dim);
  font-size:17px;
  max-width:480px;
  margin:0 auto;
}

/* ---------- Letter-style sections ---------- */
.chapter{
  padding:50px 0;
  border-top:1px solid var(--line);
}
.chapter:first-of-type{border-top:none;}
.chapter-label{
  font-family:var(--font-display);
  font-style:italic;
  font-size:14px;
  color:var(--terracotta);
  margin-bottom:14px;
}
.chapter h2{
  font-family:var(--font-display);
  font-weight:600;
  font-size:clamp(26px,4vw,34px);
  margin-bottom:18px;
  letter-spacing:-0.3px;
}
.chapter p{
  color:var(--ink-dim);
  font-size:16.5px;
  margin-bottom:16px;
  max-width:620px;
}
.chapter p strong{color:var(--ink);font-weight:600;}

/* pull quote */
.pull-quote{
  font-family:var(--font-display);
  font-style:italic;
  font-size:clamp(20px,3.4vw,26px);
  color:var(--ink);
  line-height:1.5;
  padding:30px 0;
  border-left:3px solid var(--terracotta);
  padding-left:26px;
  margin:30px 0;
}

/* trait/quality cards */
.traits-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:30px;
}
.trait-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  padding:26px 22px;
  text-align:center;
}
.trait-card .trait-icon{
  width:42px;height:42px;
  margin:0 auto 14px auto;
  display:flex;align-items:center;justify-content:center;
  font-size:22px;
}
.trait-card h3{
  font-family:var(--font-display);
  font-size:17px;
  margin-bottom:8px;
}
.trait-card p{
  font-size:13.5px;
  color:var(--ink-dim);
  margin-bottom:0;
}
@media (max-width:680px){.traits-grid{grid-template-columns:1fr;}}

/* moments / gallery cards */
.moments-list{display:flex;flex-direction:column;gap:0;margin-top:10px;}
.moment-item{
  display:flex;gap:24px;
  padding:30px 0;
  border-top:1px solid var(--line);
}
.moment-item:first-child{border-top:none;padding-top:10px;}
.moment-date{
  font-family:var(--font-display);
  font-style:italic;
  font-size:14px;
  color:var(--terracotta);
  flex-shrink:0;
  width:110px;
  padding-top:3px;
}
.moment-body h3{
  font-family:var(--font-display);
  font-size:19px;
  margin-bottom:8px;
}
.moment-body p{color:var(--ink-dim);font-size:15px;}
@media (max-width:600px){
  .moment-item{flex-direction:column;gap:8px;}
  .moment-date{width:auto;}
}

/* contact / note page */
.note-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:20px;
  padding:36px;
  margin-top:20px;
}
.field-row{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;}
.field-row label{font-size:13px;font-weight:600;color:var(--ink-dim);}
.field-row input, .field-row textarea{
  background:var(--paper-soft);
  border:1px solid var(--line);
  color:var(--ink);
  padding:13px 16px;
  border-radius:12px;
  font-size:15px;
  font-family:var(--font-body);
  outline:none;
  transition:border-color .2s;
  width:100%;
}
.field-row input:focus, .field-row textarea:focus{border-color:var(--terracotta);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:30px;
  font-size:15px;font-weight:600;
  border:none;
  transition:transform .2s, box-shadow .2s, background .2s;
  font-family:var(--font-body);
}
.btn-terracotta{background:var(--terracotta);color:var(--paper);}
.btn-terracotta:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(217,142,115,0.35);}
.btn-outline{background:transparent;border:1.5px solid var(--line);color:var(--ink);}
.btn-outline:hover{border-color:var(--terracotta);color:var(--terracotta);}
.btn svg{width:16px;height:16px;}

.success-note{
  display:none;
  margin-top:18px;padding:16px 18px;
  background:var(--sage-soft);border:1px solid var(--sage);
  border-radius:12px;color:var(--ink);font-size:14.5px;
}
.success-note.show{display:block;}

.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px;}

@media (max-width:680px){
  .site-header{padding:22px 20px;}
  .page-wrap, .page-wrap-wide{padding:0 20px;}
  .chapter{padding:40px 0;}
}