/* ==========================================================================
   maneeshpillai.com — shared styles
   Colours live in :root below. Change them here to restyle the whole site.
   ========================================================================== */
:root{
  --bg:#07090f;
  --bg-2:#0c1019;
  --surface:#111725;
  --surface-2:#161e30;
  --line:#222b3f;
  --ink:#eef1f7;
  --ink-2:#b9c1d3;
  --muted:#7f8aa3;
  --teal:#38e1c0;
  --teal-dim:#1c7f6d;
  --amber:#ffb547;
  --violet:#8f84ff;
  --rose:#ff6f91;
  --serif:"Fraunces",Georgia,"Times New Roman",serif;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --radius:14px;
  --max:1160px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--sans);overflow-x:hidden;
  background-image:radial-gradient(1200px 600px at 85% -10%,rgba(56,225,192,.08),transparent 60%),
                   radial-gradient(900px 500px at -10% 10%,rgba(143,132,255,.07),transparent 60%)}
img{max-width:100%;display:block}
a{color:var(--teal);text-decoration:none}
a:hover{text-decoration:underline}
::selection{background:var(--teal);color:#04120f}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px;border-radius:4px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
@media (max-width:600px){.wrap{padding:0 16px}}

/* ---------- Header / nav ---------- */
.site-header{position:sticky;top:0;z-index:50;background:rgba(7,9,15,.78);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{font-family:var(--serif);font-size:1.25rem;color:var(--ink);font-weight:600;letter-spacing:-.01em;white-space:nowrap}
.brand span{color:var(--teal)}
.brand:hover{text-decoration:none}
.nav-links{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.nav-links a{display:block;padding:8px 12px;border-radius:8px;color:var(--ink-2);font-size:.92rem}
.nav-links a:hover{background:var(--surface);color:var(--ink);text-decoration:none}
.nav-links a.active{color:var(--teal);background:rgba(56,225,192,.08)}
.nav-toggle{display:none;background:none;border:1px solid var(--line);color:var(--ink);border-radius:8px;padding:8px 10px;font:inherit;cursor:pointer}
@media (max-width:900px){
  .nav-toggle{display:block}
  .nav-links{position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--bg-2);border-bottom:1px solid var(--line);padding:8px 16px 16px;display:none}
  .nav-links.open{display:flex}
  .nav-links a{padding:12px}
}

/* ---------- Type ---------- */
h1,h2,h3{font-family:var(--serif);font-weight:500;letter-spacing:-.02em;line-height:1.12;margin:0 0 .5em}
h1{font-size:clamp(2.4rem,6vw,4.4rem)}
h2{font-size:clamp(1.8rem,3.6vw,2.6rem)}
h3{font-size:1.3rem;font-weight:600;letter-spacing:-.01em}
h1 em,h2 em{font-style:italic;color:var(--teal)}
p{margin:0 0 1em;color:var(--ink-2)}
.kicker{font-family:var(--mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin:0 0 14px;display:flex;align-items:center;gap:10px}
.kicker::before{content:"";width:22px;height:1px;background:currentColor}
.lede{font-size:1.18rem;color:var(--ink-2);max-width:62ch}
.muted{color:var(--muted)}
.mono{font-family:var(--mono)}

/* ---------- Sections ---------- */
section{padding:88px 0}
section.tight{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.rule{border:0;border-top:1px solid var(--line);margin:0}

/* ---------- Page hero ---------- */
.page-hero{padding:96px 0 56px;position:relative;overflow:hidden}
.page-hero .lede{margin-top:8px}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;opacity:.55;pointer-events:none}
.page-hero .wrap{position:relative}

/* ---------- Home hero ---------- */
.home-hero{min-height:calc(100vh - 64px);display:flex;align-items:center;position:relative;overflow:hidden;padding:64px 0}
.home-hero .grid{display:grid;grid-template-columns:1.35fr .9fr;gap:56px;align-items:center}
@media (max-width:900px){.home-hero .grid{grid-template-columns:1fr;gap:36px}.home-hero{min-height:auto}}
.portrait{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);aspect-ratio:1/1.05;max-width:400px;justify-self:end;width:100%}
@media (max-width:900px){.portrait{justify-self:start;max-width:300px}}
.portrait img{width:100%;height:100%;object-fit:cover;filter:saturate(.9) contrast(1.03)}
.portrait::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 55%,rgba(7,9,15,.85))}
.portrait .tag{position:absolute;left:16px;bottom:14px;z-index:2;font-family:var(--mono);font-size:.75rem;color:var(--ink);letter-spacing:.08em}
.portrait .tag b{color:var(--teal);font-weight:500}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:999px;font-weight:600;font-size:.95rem;border:1px solid var(--line);color:var(--ink);background:var(--surface);transition:transform .2s,border-color .2s,background .2s}
.btn:hover{text-decoration:none;border-color:var(--teal);transform:translateY(-1px)}
.btn.primary{background:var(--teal);color:#04120f;border-color:var(--teal)}
.btn.primary:hover{background:#5ff0d2}

/* ---------- Counters / stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
@media (max-width:900px){.stats{grid-template-columns:repeat(2,1fr)}}
.stat{background:var(--bg-2);padding:26px 22px}
.stat .num{font-family:var(--serif);font-size:clamp(2rem,4vw,2.9rem);line-height:1;color:var(--ink);letter-spacing:-.02em}
.stat .num small{font-size:.5em;color:var(--teal);margin-left:2px}
.stat .lbl{margin-top:10px;font-size:.88rem;color:var(--muted);line-height:1.45}
.stat .src{display:block;margin-top:10px;font-family:var(--mono);font-size:.68rem;color:var(--muted);letter-spacing:.02em}

/* ---------- Cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
@media (max-width:900px){.cards{grid-template-columns:1fr}}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:border-color .25s,transform .25s;display:flex;flex-direction:column}
a.card{color:inherit}
a.card:hover{text-decoration:none;border-color:var(--teal);transform:translateY(-3px)}
.card .num-tag{font-family:var(--mono);font-size:.75rem;color:var(--teal);letter-spacing:.1em;margin-bottom:18px}
.card p{font-size:.95rem}
.card .go{margin-top:auto;font-family:var(--mono);font-size:.8rem;color:var(--teal)}

/* ---------- Charts ---------- */
.chart-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media (max-width:900px){.chart-grid{grid-template-columns:1fr}}
.chart-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;min-width:0}
.chart-card.wide{grid-column:1/-1}
.chart-card h3{margin-bottom:4px}
.chart-card .unit{font-family:var(--mono);font-size:.72rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;margin-bottom:18px}
.chart-card .note{font-size:.86rem;color:var(--muted);margin:14px 0 0}
.chart-card .source{display:block;margin-top:12px;font-family:var(--mono);font-size:.7rem;color:var(--muted)}
.chart-card .source a{color:var(--muted);text-decoration:underline;text-decoration-color:var(--line)}
.chart-card .source a:hover{color:var(--teal)}
.chart svg{width:100%;height:auto;display:block;overflow:visible}
.chart text{font-family:var(--sans);fill:var(--ink-2)}
.legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:.84rem;color:var(--ink-2)}
.legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:7px;vertical-align:middle}

/* ---------- Experience timeline (home) ---------- */
.xp{display:grid;grid-template-columns:220px 1fr;gap:0 40px}
@media (max-width:760px){.xp{grid-template-columns:1fr}}
.xp-item{display:contents}
.xp-when{padding:28px 0;border-top:1px solid var(--line);font-family:var(--mono);font-size:.8rem;color:var(--muted);letter-spacing:.04em}
.xp-what{padding:28px 0;border-top:1px solid var(--line)}
@media (max-width:760px){.xp-what{border-top:0;padding-top:4px}.xp-when{padding-bottom:0}}
.xp-what h3{margin-bottom:2px}
.xp-what .org{color:var(--teal);font-size:.95rem;margin-bottom:12px}
.xp-what ul{margin:0;padding-left:18px;color:var(--ink-2)}
.xp-what li{margin:6px 0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{font-size:.82rem;padding:6px 12px;border-radius:999px;border:1px solid var(--line);color:var(--ink-2);background:var(--bg-2)}
.comp-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media (max-width:760px){.comp-grid{grid-template-columns:1fr}}
.comp-grid .card h3{font-size:1.05rem;font-family:var(--sans);letter-spacing:0}

/* ---------- Term of the day ---------- */
.totd{position:relative;background:linear-gradient(135deg,rgba(56,225,192,.12),rgba(143,132,255,.08));border:1px solid rgba(56,225,192,.35);border-radius:22px;padding:40px;overflow:hidden}
@media (max-width:600px){.totd{padding:26px}}
.totd .date{font-family:var(--mono);font-size:.78rem;color:var(--teal);letter-spacing:.12em;text-transform:uppercase}
.totd h2{font-size:clamp(2rem,5vw,3.4rem);margin:10px 0 14px}
.totd .def{font-size:1.15rem;color:var(--ink);max-width:62ch}
.totd .why{margin-top:16px;padding-top:16px;border-top:1px dashed rgba(56,225,192,.3);max-width:70ch}
.totd .why b{color:var(--amber);font-weight:600}
.totd .cat{display:inline-block;margin-top:18px;font-family:var(--mono);font-size:.72rem;color:var(--muted)}
.totd-nav{display:flex;gap:10px;margin-top:22px}

/* ---------- Glossary ---------- */
.gl-controls{display:grid;grid-template-columns:1fr auto;gap:12px;margin-bottom:18px}
@media (max-width:600px){.gl-controls{grid-template-columns:1fr}}
.search{width:100%;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px 16px;color:var(--ink);font:inherit;font-size:1rem}
.search::placeholder{color:var(--muted)}
.search:focus{outline:none;border-color:var(--teal)}
select.search{appearance:none;padding-right:36px;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%;background-size:5px 5px;background-repeat:no-repeat;min-width:240px}
.az{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:24px}
.az button{font-family:var(--mono);font-size:.78rem;min-width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:var(--bg-2);color:var(--ink-2);cursor:pointer}
.az button:hover{border-color:var(--teal);color:var(--ink)}
.az button.on{background:var(--teal);color:#04120f;border-color:var(--teal)}
.az button:disabled{opacity:.3;cursor:default}
.gl-count{font-family:var(--mono);font-size:.8rem;color:var(--muted);margin-bottom:14px}
.gl-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:900px){.gl-list{grid-template-columns:1fr}}
.term{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px}
.term h4{margin:0 0 6px;font-size:1.02rem;font-family:var(--sans);font-weight:650;color:var(--ink)}
.term p{margin:0;font-size:.93rem}
.term .why{margin-top:10px;font-size:.86rem;color:var(--muted)}
.term .why b{color:var(--amber);font-weight:600}
.term .cat{display:inline-block;margin-top:10px;font-family:var(--mono);font-size:.68rem;color:var(--teal);opacity:.85}
.more{display:flex;justify-content:center;margin-top:24px}
mark{background:rgba(255,181,71,.25);color:var(--ink);border-radius:3px;padding:0 2px}

/* ---------- Timeline (AI in TA) ---------- */
.tl{position:relative;padding-left:34px}
.tl::before{content:"";position:absolute;left:9px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl .tl-progress{position:absolute;left:9px;top:6px;width:2px;height:0;background:linear-gradient(var(--teal),var(--violet));transition:height .2s linear}
.tl-item{position:relative;padding:0 0 30px;opacity:0;transform:translateY(16px);transition:opacity .6s,transform .6s}
.tl-item.in{opacity:1;transform:none}
.tl-item::before{content:"";position:absolute;left:-30px;top:6px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--teal)}
.tl-item.ai::before{border-color:var(--violet)}
.tl-year{font-family:var(--mono);font-size:.8rem;color:var(--teal);letter-spacing:.06em}
.tl-item.ai .tl-year{color:var(--violet)}
.tl-item h4{margin:4px 0 4px;font-size:1.12rem;font-family:var(--serif);font-weight:500}
.tl-item p{margin:0;font-size:.94rem;max-width:68ch}
.tl-badge{font-family:var(--mono);font-size:.64rem;padding:2px 7px;border-radius:999px;border:1px solid currentColor;margin-left:8px;vertical-align:2px}

/* ---------- Tools ---------- */
.tool-filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.tool-filters button{font:inherit;font-size:.86rem;padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--bg-2);color:var(--ink-2);cursor:pointer}
.tool-filters button:hover{border-color:var(--teal)}
.tool-filters button.on{background:var(--teal);border-color:var(--teal);color:#04120f;font-weight:600}
.tools{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:900px){.tools{grid-template-columns:1fr 1fr}}
@media (max-width:600px){.tools{grid-template-columns:1fr}}
.tool{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px 20px;display:flex;flex-direction:column;gap:6px;color:inherit;transition:border-color .2s,transform .2s}
.tool:hover{border-color:var(--teal);text-decoration:none;transform:translateY(-2px)}
.tool h4{margin:0;font-size:1.02rem;color:var(--ink);display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tool p{margin:0;font-size:.9rem}
.tool .fit{font-size:.82rem;color:var(--muted)}
.tool .fit b{color:var(--amber);font-weight:600}
.tool .meta{margin-top:auto;padding-top:8px;font-family:var(--mono);font-size:.7rem;color:var(--teal);opacity:.85}
.used{font-family:var(--mono);font-size:.62rem;font-weight:500;padding:2px 7px;border-radius:999px;background:rgba(255,181,71,.15);color:var(--amber);border:1px solid rgba(255,181,71,.4)}

/* ---------- Articles ---------- */
.posts{display:grid;gap:14px}
.post-row{display:grid;grid-template-columns:140px 1fr;gap:20px;padding:22px 0;border-top:1px solid var(--line);color:inherit}
.post-row:hover{text-decoration:none}
.post-row:hover h3{color:var(--teal)}
@media (max-width:600px){.post-row{grid-template-columns:1fr;gap:6px}}
.post-row .d{font-family:var(--mono);font-size:.78rem;color:var(--muted);padding-top:4px}
.post-row p{margin:4px 0 0;font-size:.95rem}
.article{max-width:720px;margin:0 auto}
.article h1{font-size:clamp(2.1rem,5vw,3.3rem)}
.article .meta{font-family:var(--mono);font-size:.8rem;color:var(--muted);margin-bottom:36px}
.prose{font-size:1.07rem}
.prose p,.prose li{color:var(--ink-2)}
.prose h2{font-size:1.7rem;margin-top:1.6em}
.prose h3{margin-top:1.4em}
.prose blockquote{margin:1.4em 0;padding:4px 0 4px 20px;border-left:3px solid var(--teal);font-family:var(--serif);font-size:1.25rem;color:var(--ink)}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--surface);padding:2px 6px;border-radius:5px}
.prose img{border-radius:12px;margin:1.4em 0}
.prose table{border-collapse:collapse;width:100%;margin:1.4em 0;font-size:.95rem}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:10px 8px;text-align:left}

/* ---------- Flow diagram (LLM) ---------- */
.flow-wrap{overflow-x:auto}
.flow svg{min-width:640px}

/* ---------- Footer ---------- */
.site-footer{border-top:1px solid var(--line);padding:48px 0;margin-top:40px}
.foot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:24px;align-items:flex-start}
.foot p{margin:0;font-size:.9rem}
.foot .links{display:flex;gap:18px;flex-wrap:wrap;font-size:.92rem}

/* ---------- Reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .8s ease,transform .8s ease}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal,.tl-item{opacity:1;transform:none}
}

/* ---------- HTML bar charts (animated when scrolled into view) ---------- */
.hbars{display:grid;gap:16px}
.hbar{display:grid;grid-template-columns:minmax(110px,190px) 1fr 70px;align-items:center;gap:14px}
@media (max-width:600px){.hbar{grid-template-columns:1fr 64px}.hbar .hb-label{grid-column:1/-1;margin-bottom:-8px}}
.hb-label{font-size:.9rem;color:var(--ink-2);line-height:1.3}
.hb-track{position:relative;height:30px;background:var(--bg-2);border-radius:8px;overflow:hidden}
.hb-fill{position:absolute;top:0;bottom:0;left:var(--l,0%);width:0;border-radius:8px;background:var(--c,var(--teal));transition:width 1.4s cubic-bezier(.2,.8,.2,1)}
.in .hb-fill{width:var(--w)}
.hb-dot{position:absolute;top:50%;width:14px;height:14px;margin:-7px 0 0 -7px;border-radius:50%;background:var(--c,var(--teal));left:var(--l);opacity:0;transition:opacity .6s 1s}
.in .hb-dot{opacity:1}
.hb-val{font-family:var(--mono);font-size:.86rem;color:var(--ink);text-align:right;white-space:nowrap}
.hb-axis{display:grid;grid-template-columns:minmax(110px,190px) 1fr 70px;gap:14px;font-family:var(--mono);font-size:.68rem;color:var(--muted)}
.hb-axis .ticks{display:flex;justify-content:space-between}
@media (max-width:600px){.hb-axis{grid-template-columns:1fr 64px}.hb-axis>span:first-child{display:none}}
.split{display:grid;gap:18px}
.split-row .sl{font-size:.9rem;color:var(--ink-2);margin-bottom:6px}
.split-bar{display:flex;height:40px;border-radius:10px;overflow:hidden;background:var(--bg-2)}
.split-bar div{width:0;display:flex;align-items:center;padding:0 12px;font-family:var(--mono);font-size:.82rem;color:#04120f;font-weight:600;white-space:nowrap;overflow:hidden;transition:width 1.4s cubic-bezier(.2,.8,.2,1)}
.in .split-bar div{width:var(--w)}
.split-bar .b{color:var(--ink)}
.rings{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;text-align:center}
@media (max-width:600px){.rings{grid-template-columns:1fr}}
.ring svg{width:150px;height:150px;transform:rotate(-90deg)}
.ring circle{fill:none;stroke-width:10}
.ring .bg{stroke:var(--bg-2)}
.ring .fg{stroke:var(--teal);stroke-linecap:round;transition:stroke-dashoffset 1.8s cubic-bezier(.2,.8,.2,1)}
.ring .wrap-r{position:relative;width:150px;margin:0 auto}
.ring .pct{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--serif);font-size:2.1rem}
.ring p{font-size:.88rem;margin:10px auto 0;max-width:24ch}
.donut-wrap{display:grid;grid-template-columns:220px 1fr;gap:28px;align-items:center}
@media (max-width:600px){.donut-wrap{grid-template-columns:1fr}.donut-wrap svg{max-width:220px;margin:0 auto}}
.donut-wrap circle{fill:none;stroke-width:26;transition:stroke-dasharray 1.6s cubic-bezier(.2,.8,.2,1)}
.donut-legend{display:grid;gap:8px;font-size:.88rem}
.donut-legend button{all:unset;cursor:pointer;display:flex;justify-content:space-between;gap:12px;padding:6px 10px;border-radius:8px;color:var(--ink-2)}
.donut-legend button:hover,.donut-legend button:focus-visible{background:var(--bg-2);color:var(--ink)}
.donut-legend i{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:8px}
.donut-legend span:last-child{font-family:var(--mono);color:var(--muted)}
.gantt{display:grid;gap:10px}
.g-row{display:grid;grid-template-columns:150px 1fr;gap:14px;align-items:center}
@media (max-width:600px){.g-row{grid-template-columns:1fr}}
.g-name{font-size:.86rem;color:var(--ink-2)}
.g-track{position:relative;height:26px;background:var(--bg-2);border-radius:6px}
.g-bar{position:absolute;top:0;bottom:0;left:var(--l);width:0;border-radius:6px;background:var(--c);transition:width 1.2s cubic-bezier(.2,.8,.2,1);transition-delay:var(--d,0s);display:flex;align-items:center;padding-left:8px;font-family:var(--mono);font-size:.68rem;color:#04120f;font-weight:600;white-space:nowrap;overflow:hidden}
.in .g-bar{width:var(--w)}
.g-axis{display:grid;grid-template-columns:150px 1fr;gap:14px;font-family:var(--mono);font-size:.68rem;color:var(--muted)}
.g-axis div{display:flex;justify-content:space-between}
@media (max-width:600px){.g-axis{grid-template-columns:1fr}.g-axis>span{display:none}}

.g-yrs{display:none;color:var(--muted);font-family:var(--mono);font-size:.75rem}
@media (max-width:600px){.g-yrs{display:inline}.g-bar{font-size:0;padding:0}}