/* Minimal left-rail layout with dark-mode support and week cards. */
/* Tokens */
:root{
  --bg: #ffffff;
  --ink: #0f172a;
  --muted: #475569;
  --line: #e5e7eb;
  --accent: #3b82f6;
  --accent-light: #dbeafe;
  --card: #fafbfc;
  --elev: 0 2px 8px rgba(0,0,0,0.06);
  --step--2: clamp(.75rem,.7rem + .1vw,.8rem);
  --step--1: clamp(.86rem,.8rem + .15vw,.95rem);
  --step-0: clamp(1rem,.95rem + .2vw,1.0625rem);
  --step-1: clamp(1.125rem,1.05rem + .4vw,1.25rem);
  --step-2: clamp(1.375rem,1.2rem + .8vw,1.6rem);
  --step-3: clamp(1.75rem,1.5rem + 1.2vw,2rem);
}

@media (prefers-color-scheme: dark){
  :root{
    --bg: #0b1220;
    --ink: #e5e7eb;
    --muted: #94a3b8;
    --line: #1f2937;
    --accent: #60a5fa;
    --accent-light: #0b3a75;
    --card: #0f172a;
    --elev: 0 4px 16px rgba(0,0,0,0.45);
  }
}

*{box-sizing:border-box}
html,body{height:100%}
img{max-width:100%; height:auto; display:block}
body{
  margin:0;
  font-family: -apple-system,BlinkMacSystemFont,Inter,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height:1.65;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  word-wrap:break-word;
}

/* Give anchors a little breathing room when jumped to */
.section{ scroll-margin-top: 20px; }
a{color:inherit;text-underline-offset:3px}
a:hover{color:#1f2937}
@media (prefers-color-scheme: dark){
  a:hover{color:#cbd5e1}
}

.wrap{
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 24px 80px;
  display: grid;
  grid-template-columns: 300px minmax(0,1fr);
  gap: 56px;
}

/* Left column */
.left{position:sticky; top:24px; align-self:start}
.id h1{ margin:0 0 6px 0; font-size: var(--step-3); letter-spacing:-0.02em; }
.tag{margin:0 0 16px 0; color:var(--muted); font-size: var(--step-0)}
.portrait{margin: 14px 0 18px}
.portrait img{
  width:100%;
  max-width: 260px;
  border-radius: 12px;
  border:1px solid var(--line);
  transition: transform 0.2s ease;
}
.portrait img:hover{ transform: scale(1.02) }
.nav{display:grid; gap:6px; margin: 10px 0 14px}
.nav a{
  padding:7px 10px;
  border-radius:8px;
  text-decoration:none;
  color:var(--muted);
  font-weight:500;
  transition: all 0.15s ease;
}
.nav a:hover{background:rgba(148,163,184,.12);color:var(--ink); padding-left:14px}
.links{display:flex; gap:8px; flex-wrap:wrap; margin: 8px 0 8px}
.btn{
  border:1px solid var(--line);
  border-radius:10px;
  padding:8px 14px;
  text-decoration:none;
  font-weight:700;
  font-size: var(--step--1);
  background:#fff;
  transition: all 0.2s ease;
}
@media (prefers-color-scheme: dark){
  .btn{ background:#0b1220 }
}
.btn.primary{background: var(--ink); color:#fff; border-color:var(--ink)}
.btn.primary:hover{filter:brightness(1.1); transform: translateY(-1px)}
.btn:hover{border-color:#cbd5e1; transform: translateY(-1px)}
.foot{color:var(--muted); margin-top:10px; font-size:var(--step--1)}

/* Right column */
.right{display:grid; gap:64px}
.section h2{ 
  margin:0 0 18px; 
  font-size: var(--step-2); 
  letter-spacing:-0.01em; 
  padding-bottom:8px;
  border-bottom:2px solid var(--line);
}
.lead{font-size: var(--step-1); color:var(--muted); max-width: 65ch; margin-bottom:16px}
.lead:last-child{margin-bottom:0}
.item{
  padding:20px 0;
  border-top:1px solid var(--line);
  border-left: 3px solid transparent;
  padding-left: 0;
  margin-left: 0;
  transition: all 0.2s ease;
}
.item:first-of-type{border-top:0; padding-top:0}
.item:hover{ border-left-color: var(--accent); padding-left: 16px; margin-left: -16px }
.head{display:flex; justify-content:space-between; gap:12px; align-items:baseline; flex-wrap:wrap}
.head h3{margin:0; font-size: 1.125rem; font-weight:700}
.meta{color:var(--muted); font-weight:600; font-size:var(--step--1)}
.role{color:#334155; font-weight:700; margin:6px 0 8px; font-size:var(--step-0)}
@media (prefers-color-scheme: dark){
  .role{ color:#cbd5e1 }
}
.text{margin:0; color:var(--muted); line-height:1.7}

/* Details list for experience */
.details{ margin:8px 0 0; padding-left:20px; color:var(--muted); line-height:1.7 }
.details li{margin-bottom:6px}
.details li:last-child{margin-bottom:0}

/* Education */
.edu{padding:18px 0; border-top:1px solid var(--line)}
.edu:first-of-type{border-top:0; padding-top:0}
.edu h3{margin:0 0 6px; font-size:1.125rem; font-weight:700}
.edu .meta{display:block; margin-bottom:6px}
.edu .text{line-height:1.7}

/* Skills section */
.skills-grid{ display:grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap:24px }
.skill-group{
  padding:18px;
  border:1px solid var(--line);
  border-radius:12px;
  background:var(--card);
  transition: all 0.2s ease;
  box-shadow: var(--elev);
}
.skill-group:hover{ border-color:#cbd5e1; transform: translateY(-2px) }
.skill-group h4{ margin:0 0 8px; font-size:1rem; color:var(--ink); font-weight:700 }
.skill-group p{ margin:0; color:var(--muted); font-size:var(--step--1); line-height:1.6 }

/* Pills and tags */
.pill{
  display:inline-block; padding:3px 10px; border-radius:999px;
  border:1px solid #c7ecee; background:#e6fffb; color:#155e75;
  font-size:.75rem; font-weight:700; letter-spacing:0.01em;
}
.tags{ display:flex; gap:6px; flex-wrap:wrap; margin:8px 0 }
.tag-pill{
  display:inline-block; padding:3px 10px; border-radius:999px;
  border:1px solid var(--accent-light); background:#f0f7ff; color:#1e40af;
  font-size:.75rem; font-weight:600; letter-spacing:0.01em;
}
@media (prefers-color-scheme: dark){
  .pill{ background:#062e2e; border-color:#134e4a; color:#ccfbf1 }
  .tag-pill{ background:#0b2161; border-color:#1e40af; color:#bfdbfe }
}

/* Weeklist cards */
.weeklist{ display:grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap:24px }
.week-card{
  border:1px solid var(--line); border-radius:12px; background:var(--card);
  padding:16px; box-shadow: var(--elev);
  transition: transform .15s ease, border-color .15s ease;
}
.week-card:hover{ transform: translateY(-2px); border-color:#cbd5e1 }
.week-head{ display:flex; justify-content:space-between; align-items:center; margin-bottom:6px}
.week-date{ font-size:.9rem; color:var(--muted); font-weight:700 }
.reading-list{ list-style:none; padding-left:0; margin:8px 0 0 0 }
.reading-list li{ margin:8px 0; line-height:1.5 }
.reading-list a{ text-decoration:none; border-bottom:1px dashed #cbd5e1; padding-bottom:1px }
.reading-list a:hover{ color:var(--accent) }
.mini-note{ color:var(--muted); font-size:.85rem; margin-left:6px }

/* Library */
.note{color:var(--muted); margin:0 0 18px; font-style:italic}
.shelf{ display:grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap:24px }
.book{ display:grid; grid-template-rows:auto 1fr; gap:12px; transition: transform 0.2s ease }
.book:hover{ transform: translateY(-4px) }
.cover{
  display:block; border:1px solid var(--line); border-radius:10px;
  overflow:hidden; aspect-ratio: 2/3; background:#f8fafc; box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  transition: all 0.2s ease;
}
@media (prefers-color-scheme: dark){
  .cover{ background:#0f172a; box-shadow: 0 4px 12px rgba(0,0,0,0.6) }
}
.cover:hover{ box-shadow: 0 8px 20px rgba(0,0,0,0.12); border-color:#cbd5e1 }
.cover img{ width:100%; height:100%; object-fit:cover }
.book .meta .title{ margin:0 0 4px; font-size: 1rem; font-weight:700; line-height:1.3 }
.book .meta .by{ margin:0 0 6px; font-size:.88rem; color:var(--muted); font-weight:500 }
.book .meta .note-text{ margin:0; font-size:.85rem; color:var(--muted); line-height:1.5; font-style:italic }

/* Footer */
.page-foot{ color:var(--muted); border-top:2px solid var(--line); padding-top:20px; margin-top:20px; font-size:var(--step--1) }
.page-foot a{ font-weight:600; transition: color 0.15s ease }
.page-foot a:hover{ color:var(--accent) }

/* Responsive */
@media (max-width: 960px){
  .wrap{grid-template-columns: 1fr; gap:40px}
  .left{position:static}
  .portrait img{max-width: 200px}
  .right{gap:48px}
  .skills-grid{grid-template-columns: 1fr}
  .shelf{grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap:20px}
  .item:hover{ border-left-color: transparent; padding-left: 0; margin-left: 0 }
}

@media (max-width: 640px){
  .wrap{padding: 32px 20px 60px}
  .section h2{font-size: var(--step-1); margin-bottom:14px}
  .shelf{grid-template-columns: repeat(2, 1fr)}
}