/* HeyGyan design system
   Layout: graph-paper study desk — a deep ink "blackboard" band for heroes,
   cool paper surfaces for work areas, saffron for highlights, peacock for actions. */
:root{
  --paper:#f5f7fb; --surface:#ffffff; --ink:#141a33; --muted:#5a6283; --line:#dde2ee;
  --board:#141c3b; --board-ink:#eef1fb; --board-muted:#9ea7cc; --grid:rgba(255,255,255,.06);
  --peacock:#0b7a85; --peacock-ink:#ffffff; --peacock-soft:#e0f1f2;
  --saffron:#f0a020; --saffron-soft:#fdf0d6; --saffron-ink:#3a2700;
  --leaf:#23905a; --leaf-soft:#dff3e8; --coral:#d24c43; --coral-soft:#fbe4e2;
  --violet:#6b4fc7; --phy:#2f6fdb; --che:#c2570c; --mat:#0b7a85;
  --display:"Unbounded","Segoe UI",system-ui,sans-serif;
  --body:"Figtree","Segoe UI",system-ui,sans-serif;
  --mono:"JetBrains Mono",Consolas,ui-monospace,monospace;
  --radius:12px; --shadow:0 1px 2px rgba(20,26,51,.06),0 8px 24px rgba(20,26,51,.06);
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --paper:#0e1224; --surface:#161b33; --ink:#e8ebf7; --muted:#a0a8c8; --line:#283056;
  --board:#0a0e1d; --board-ink:#eef1fb; --board-muted:#9ea7cc; --grid:rgba(255,255,255,.05);
  --peacock:#3fb7c2; --peacock-ink:#04181b; --peacock-soft:#123438;
  --saffron:#f4b545; --saffron-soft:#3a2c10; --saffron-ink:#2a1b00;
  --leaf:#4cc283; --leaf-soft:#11301f; --coral:#f07a71; --coral-soft:#3a1715;
  --violet:#a28cf0; --phy:#6fa0f2; --che:#f0904a; --mat:#3fb7c2;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25); color-scheme:dark}}
:root[data-theme="dark"]{
  --paper:#0e1224; --surface:#161b33; --ink:#e8ebf7; --muted:#a0a8c8; --line:#283056;
  --board:#0a0e1d; --board-ink:#eef1fb; --board-muted:#9ea7cc; --grid:rgba(255,255,255,.05);
  --peacock:#3fb7c2; --peacock-ink:#04181b; --peacock-soft:#123438;
  --saffron:#f4b545; --saffron-soft:#3a2c10; --saffron-ink:#2a1b00;
  --leaf:#4cc283; --leaf-soft:#11301f; --coral:#f07a71; --coral-soft:#3a1715;
  --violet:#a28cf0; --phy:#6fa0f2; --che:#f0904a; --mat:#3fb7c2;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.25); color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 var(--body);-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--peacock)}
h1,h2,h3{font-family:var(--display);font-weight:600;line-height:1.15;text-wrap:balance;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.4rem)} h2{font-size:clamp(1.4rem,3vw,2rem)} h3{font-size:1.05rem}
p{margin:0;max-width:65ch}
.wrap{max-width:1140px;margin:0 auto;padding-inline:20px}
.eyebrow{font:600 .75rem/1 var(--body);letter-spacing:.12em;text-transform:uppercase;color:var(--peacock)}
.muted{color:var(--muted)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
[hidden]{display:none!important}

/* ---------- Nav ---------- */
.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 1.25rem var(--display)}
.logo-mark{width:34px;height:34px;border-radius:10px;background:var(--board);display:grid;place-items:center;color:var(--saffron);font:700 1rem var(--body);position:relative}
.logo-mark::after{content:"";position:absolute;right:-3px;top:-3px;width:10px;height:10px;border-radius:50%;background:var(--saffron);border:2px solid var(--paper)}
.logo b{color:var(--peacock);font-weight:700}
.nav-links{display:flex;gap:4px;flex-wrap:wrap}
.nav-links a{color:var(--muted);text-decoration:none;font-weight:600;padding:8px 12px;border-radius:8px;font-size:.95rem}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--ink);background:var(--surface)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:600 .95rem var(--body);padding:12px 20px;border-radius:10px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;text-decoration:none;transition:transform .12s ease,background .12s ease}
.btn:hover{transform:translateY(-1px)}
.btn:disabled{opacity:.45;cursor:not-allowed;transform:none}
.btn-primary{background:var(--peacock);color:var(--peacock-ink);border-color:var(--peacock)}
.btn-saffron{background:var(--saffron);color:var(--saffron-ink);border-color:var(--saffron)}
.btn-ghost-board{background:transparent;color:var(--board-ink);border-color:rgba(255,255,255,.25)}
.btn-sm{padding:8px 12px;font-size:.85rem}
:focus-visible{outline:3px solid var(--saffron);outline-offset:2px}

/* ---------- Board (hero band) ---------- */
.board{background:var(--board);color:var(--board-ink);position:relative;overflow:hidden;
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:28px 28px}
.board .eyebrow{color:var(--saffron)}
.board p{color:var(--board-muted)}
.hero{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;padding-block:64px 72px}
.hero h1 em{font-style:normal;color:var(--saffron)}
.hero-copy{display:flex;flex-direction:column;gap:22px;min-width:0}
.hero-copy p{font-size:1.15rem}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.countdown{display:flex;gap:10px;flex-wrap:wrap;align-items:center;font-size:.9rem;color:var(--board-muted)}
.countdown .mono{color:var(--board-ink);font-size:1.05rem;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);padding:4px 10px;border-radius:8px}
.formula{position:absolute;font-family:var(--mono);color:rgba(255,255,255,.12);font-size:.95rem;white-space:nowrap;pointer-events:none;user-select:none}

/* preview card in hero */
.preview{background:var(--surface);color:var(--ink);border-radius:16px;padding:20px;box-shadow:0 20px 50px rgba(0,0,0,.35);display:flex;flex-direction:column;gap:14px;transform:rotate(1.2deg);min-width:0}
.preview-top{display:flex;justify-content:space-between;align-items:center;gap:8px;flex-wrap:wrap}
.preview .opt{pointer-events:none}

/* ---------- Sections ---------- */
section{padding-block:72px}
.section-head{display:flex;flex-direction:column;gap:10px;margin-bottom:32px}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:12px;min-width:0}
.card.raised{box-shadow:var(--shadow)}
.card .icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font:700 1.1rem var(--display)}
.i-peacock{background:var(--peacock-soft);color:var(--peacock)}
.i-saffron{background:var(--saffron-soft);color:var(--saffron)}
.i-coral{background:var(--coral-soft);color:var(--coral)}
.i-leaf{background:var(--leaf-soft);color:var(--leaf)}
.card .foot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap;padding-top:6px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-flex;align-items:center;gap:6px;font-size:.78rem;font-weight:600;padding:3px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted);background:var(--surface)}
.chip.phy{color:var(--phy);border-color:currentColor}
.chip.che{color:var(--che);border-color:currentColor}
.chip.mat{color:var(--mat);border-color:currentColor}
.chip.easy{color:var(--leaf);border-color:currentColor}
.chip.medium{color:var(--saffron);border-color:currentColor}
.chip.hard{color:var(--coral);border-color:currentColor}
.chip.num{color:var(--violet);border-color:currentColor}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px;counter-reset:s}
.step{display:flex;flex-direction:column;gap:8px;padding-top:18px;border-top:3px solid var(--line);min-width:0}
.step::before{counter-increment:s;content:counter(s);font:700 1.6rem var(--display);color:var(--saffron)}
.step:first-child{border-color:var(--saffron)}

/* pricing */
.price{font:700 2rem var(--display)}
.price small{font:500 .9rem var(--body);color:var(--muted)}
.card.featured{border:2px solid var(--peacock);position:relative}
.badge{position:absolute;top:-12px;left:22px;background:var(--peacock);color:var(--peacock-ink);font-size:.75rem;font-weight:700;padding:3px 10px;border-radius:999px}
ul.ticks{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px}
ul.ticks li{padding-left:24px;position:relative}
ul.ticks li::before{content:"✓";position:absolute;left:0;color:var(--leaf);font-weight:700}

/* wellbeing */
.calm{background:var(--saffron-soft);border-radius:20px;padding:36px;display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center}
.calm .helpline{background:var(--surface);border-radius:14px;padding:20px;display:flex;flex-direction:column;gap:6px}
.calm .helpline .mono{font-size:1.8rem;font-weight:700}

footer{border-top:1px solid var(--line);padding-block:32px;color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap}

/* ---------- Practice library ---------- */
.page-head{padding-block:40px 28px}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.filter{font:600 .88rem var(--body);padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer}
.filter[aria-pressed="true"]{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.meter{height:8px;border-radius:4px;background:var(--line);overflow:hidden}
.meter span{display:block;height:100%;background:var(--peacock);border-radius:4px}
.meter.saffron span{background:var(--saffron)}

/* ---------- Exam ---------- */
.exam-bar{background:var(--board);color:var(--board-ink)}
.exam-bar .wrap{display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:60px;flex-wrap:wrap;padding-block:8px}
.exam-title{font:600 1rem var(--display)}
.timer{font:700 1.35rem var(--mono);font-variant-numeric:tabular-nums;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.18);padding:6px 14px;border-radius:10px}
.timer.low{color:#ff8f86;border-color:#ff8f86}
.sections{display:flex;gap:6px;flex-wrap:wrap}
.sec-tab{font:600 .88rem var(--body);padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer}
.sec-tab[aria-pressed="true"]{border-color:var(--peacock);color:var(--peacock);background:var(--peacock-soft)}
.exam-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;padding-block:20px 48px;align-items:start}
.qpanel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:18px;min-width:0}
.qhead{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;align-items:center;padding-bottom:14px;border-bottom:1px solid var(--line)}
.qno{font:600 1rem var(--display)}
.qtext{font-size:1.12rem;line-height:1.65}
.opts{display:flex;flex-direction:column;gap:10px}
.opt{display:flex;gap:14px;align-items:flex-start;border:1.5px solid var(--line);border-radius:10px;padding:14px;cursor:pointer;background:var(--surface);transition:border-color .12s ease}
.opt:hover{border-color:var(--peacock)}
.opt input{position:absolute;opacity:0;pointer-events:none}
.opt .key{flex:none;width:28px;height:28px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font:700 .82rem var(--body);color:var(--muted)}
.opt.sel{border-color:var(--peacock);background:var(--peacock-soft)}
.opt.sel .key{background:var(--peacock);border-color:var(--peacock);color:var(--peacock-ink)}
.opt:focus-within{outline:3px solid var(--saffron);outline-offset:2px}
.opt.right{border-color:var(--leaf);background:var(--leaf-soft)}
.opt.right .key{background:var(--leaf);border-color:var(--leaf);color:#fff}
.opt.wrong{border-color:var(--coral);background:var(--coral-soft)}
.opt.wrong .key{background:var(--coral);border-color:var(--coral);color:#fff}
.numin{display:flex;flex-direction:column;gap:8px;max-width:320px}
.numin input{font:600 1.2rem var(--mono);padding:12px 14px;border-radius:10px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink)}
.numin input:focus{border-color:var(--peacock);outline:none}
.qactions{display:flex;gap:10px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--line)}
.qactions .spacer{flex:1}
.btn-mark{border-color:var(--violet);color:var(--violet)}
.side{display:flex;flex-direction:column;gap:14px;position:sticky;top:calc(env(safe-area-inset-top,0px) + 16px)}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:14px}
.palette{display:grid;grid-template-columns:repeat(5,1fr);gap:8px}
.pal{aspect-ratio:1;max-width:100%;border-radius:8px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);font:700 .85rem var(--mono);cursor:pointer;position:relative}
.pal.nv{background:var(--surface)}
.pal.na{background:var(--coral);border-color:var(--coral);color:#fff}
.pal.an{background:var(--leaf);border-color:var(--leaf);color:#fff}
.pal.mk{background:var(--violet);border-color:var(--violet);color:#fff;border-radius:50%}
.pal.am{background:var(--violet);border-color:var(--violet);color:#fff;border-radius:50%}
.pal.am::after{content:"";position:absolute;right:-2px;bottom:-2px;width:11px;height:11px;border-radius:50%;background:var(--leaf);border:2px solid var(--surface)}
.pal.cur{box-shadow:0 0 0 3px var(--saffron)}
.legend{display:grid;grid-template-columns:1fr 1fr;gap:8px;font-size:.78rem;color:var(--muted)}
.legend span{display:flex;align-items:center;gap:6px}
.legend i{flex:none;width:14px;height:14px;border-radius:4px;border:1.5px solid var(--line)}
.counts{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center}
.counts b{display:block;font:700 1.2rem var(--mono)}
.counts small{font-size:.72rem;color:var(--muted)}

/* ---------- Results ---------- */
.score-hero{display:grid;grid-template-columns:auto 1fr;gap:32px;align-items:center;padding-block:40px}
.ring{width:170px;height:170px;position:relative}
.ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring .val{position:absolute;inset:0;display:grid;place-items:center;text-align:center}
.ring .val b{font:700 2.2rem var(--display);display:block;color:var(--board-ink)}
.ring .val small{color:var(--board-muted);font-size:.8rem}
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.stat{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);border-radius:12px;padding:14px}
.stat b{display:block;font:700 1.35rem var(--mono);color:var(--board-ink)}
.stat small{color:var(--board-muted);font-size:.8rem}
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.95rem}
th,td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line)}
th{font-size:.75rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:700}
td.mono,th.num{text-align:right}
.timebars{display:flex;flex-direction:column;gap:8px}
.tb{display:grid;grid-template-columns:44px minmax(0,1fr) 64px;gap:10px;align-items:center;font-size:.85rem}
.tb .track{height:12px;background:var(--line);border-radius:6px;overflow:hidden}
.tb .fill{height:100%;border-radius:6px;background:var(--peacock)}
.tb .fill.slow{background:var(--saffron)}
.tb .fill.wrongc{background:var(--coral)}
.sol{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:22px;display:flex;flex-direction:column;gap:14px}
.verdict{font-weight:700;display:inline-flex;align-items:center;gap:6px}
.v-ok{color:var(--leaf)}.v-no{color:var(--coral)}.v-skip{color:var(--muted)}
.logic{background:var(--peacock-soft);border-radius:10px;padding:14px 16px}
.trap{background:var(--saffron-soft);border-radius:10px;padding:14px 16px}
.logic b,.trap b{font-family:var(--display);font-size:.85rem;display:block;margin-bottom:4px}
.tagrow{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.tagbtn{font:600 .8rem var(--body);padding:6px 12px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--muted);cursor:pointer}
.tagbtn[aria-pressed="true"]{background:var(--coral);border-color:var(--coral);color:#fff}
.empty{text-align:center;padding:40px 20px;display:flex;flex-direction:column;align-items:center;gap:12px}

/* ---------- Dashboard ---------- */
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.kpi b{display:block;font:700 1.7rem var(--mono)}
.kpi small{color:var(--muted)}
.hbar{display:grid;grid-template-columns:150px minmax(0,1fr) 52px;gap:12px;align-items:center;font-size:.9rem}
.hbar .track{height:14px;background:var(--line);border-radius:7px;overflow:hidden}
.hbar .fill{height:100%;border-radius:7px}
.note{font-size:.85rem;color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:10px;font-weight:600;z-index:50}

@media (prefers-reduced-motion:no-preference){
  .rise{animation:rise .5s ease-out both}
  .rise:nth-child(2){animation-delay:.06s}.rise:nth-child(3){animation-delay:.12s}.rise:nth-child(4){animation-delay:.18s}
}
@keyframes rise{from{transform:translateY(10px)}to{transform:none}}

@media (max-width:900px){
  .hero,.calm{grid-template-columns:1fr}
  .preview{transform:none}
  .g3,.g4,.steps,.kpis,.stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .exam-grid{grid-template-columns:1fr}
  .side{position:static}
  .score-hero{grid-template-columns:1fr;justify-items:start}
}
@media (max-width:560px){
  .g3,.g2,.g4,.steps{grid-template-columns:1fr}
  section{padding-block:52px}
  .hbar{grid-template-columns:110px minmax(0,1fr) 44px}
  .wrap{padding-inline:16px}
}
.board .preview p{color:var(--ink)}
/* long papers: keep the palette scrollable so Submit stays in view */
@media (min-width:901px){.side>.panel:first-child{max-height:calc(100vh - 220px);overflow-y:auto}}

/* ---------- Footer links ---------- */
.foot-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.foot-links div{display:flex;flex-direction:column;gap:6px;min-width:0}
.foot-links b{color:var(--ink);font-size:.85rem;letter-spacing:.06em;text-transform:uppercase;margin-bottom:4px}
.foot-links a{color:var(--muted);text-decoration:none}
.foot-links a:hover{color:var(--peacock);text-decoration:underline}

/* ---------- Articles (guides, question pages) ---------- */
.crumbs{font-size:.85rem;color:var(--board-muted);display:flex;gap:6px;flex-wrap:wrap}
.crumbs a{color:var(--board-muted)}
.article{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;padding-block:40px 72px;align-items:start}
.prose{display:flex;flex-direction:column;gap:16px;min-width:0;font-size:1.05rem}
.prose h2{font-size:1.45rem;margin-top:18px}
.prose h3{font-size:1.1rem;margin-top:6px}
.prose ul,.prose ol{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px;max-width:65ch}
.prose table{font-size:.95rem}
.prose .callout{background:var(--peacock-soft);border-radius:12px;padding:16px 18px}
.prose .callout.warn{background:var(--saffron-soft)}
.aside-cta{position:sticky;top:calc(env(safe-area-inset-top,0px) + 84px);display:flex;flex-direction:column;gap:12px}
.qcard{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);padding:20px;display:flex;flex-direction:column;gap:12px}
.qcard ol{list-style:upper-alpha;margin:0;padding-left:24px;display:flex;flex-direction:column;gap:4px}
details.sol-d{border-top:1px solid var(--line);padding-top:10px}
details.sol-d summary{cursor:pointer;font-weight:700;color:var(--peacock)}
details.sol-d[open] summary{margin-bottom:10px}
.faq{display:flex;flex-direction:column;gap:10px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.faq summary{cursor:pointer;font-weight:700;font-family:var(--display);font-size:1rem}
.faq details p{margin-top:10px;color:var(--muted)}
@media (max-width:900px){.article{grid-template-columns:1fr}.aside-cta{position:static}.foot-links{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.foot-links{grid-template-columns:1fr}}