/* ==========================================================================
   khanjankavani.com — design system
   One stylesheet for home, games, tools, work, blog.
   ========================================================================== */

:root{
  /* colour */
  --bg:        #FBFAF7;
  --bg-sunk:   #F4F2EC;
  --card:      #FFFFFF;
  --ink:       #1B1A18;
  --ink-soft:  #55514B;
  --ink-faint: #8A857D;
  --line:      #E5E1D8;
  --line-soft: #EFECE4;
  --accent:    #E5570B;
  --accent-dk: #BF4708;
  --accent-wash:#FDF0E7;
  --good:      #1F7A4D;
  --warn:      #B7791F;

  /* type */
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --display: 'Space Grotesk', var(--sans);
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  /* space */
  --gap: 22px;
  --pad: 26px;
  --radius: 14px;
  --radius-lg: 20px;

  /* motion */
  --ease: cubic-bezier(.22,.68,.36,1);
}

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

html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }

body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video,canvas{ max-width:100%; display:block; }
img{ height:auto; }

a{ color:inherit; }

h1,h2,h3,h4,h5{
  font-family:var(--display);
  font-weight:700;
  line-height:1.12;
  letter-spacing:-.022em;
  margin:0 0 .5em;
  text-wrap:balance;
}
h1{ font-size:clamp(2.1rem, 5.4vw, 3.5rem); }
h2{ font-size:clamp(1.55rem, 3.4vw, 2.25rem); }
h3{ font-size:1.2rem; }
h4{ font-size:1.05rem; }
h5{
  font-size:.74rem; font-weight:600; letter-spacing:.1em;
  text-transform:uppercase; color:var(--ink-faint);
  font-family:var(--sans); margin-bottom:1em;
}
p{ margin:0 0 1.1em; }
p:last-child{ margin-bottom:0; }

strong{ font-weight:600; }
code,kbd{ font-family:var(--mono); font-size:.9em; }

/* --------------------------------------------------------------------------
   layout
   -------------------------------------------------------------------------- */

.wrap{ width:100%; max-width:1140px; margin-inline:auto; padding-inline:22px; }
.wrap-narrow{ max-width:730px; }

.section{ padding:74px 0; }
.section-sunk{ background:var(--bg-sunk); border-block:1px solid var(--line-soft); }

.sec-head{ margin-bottom:34px; }
.sec-head h2{ margin-bottom:.28em; }
.sec-head p{ color:var(--ink-soft); max-width:60ch; margin:0; }

.eyebrow{
  display:inline-block;
  font-family:var(--mono); font-size:.72rem; font-weight:500;
  letter-spacing:.13em; text-transform:uppercase;
  color:var(--accent); margin-bottom:14px;
}

.lead{ font-size:1.14rem; color:var(--ink-soft); max-width:62ch; }

/* --------------------------------------------------------------------------
   navigation
   -------------------------------------------------------------------------- */

.nav{
  position:sticky; top:0; z-index:60;
  background:rgba(251,250,247,.88);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.nav-in{ display:flex; align-items:center; justify-content:space-between; height:66px; gap:18px; }

.brand{
  display:inline-flex; align-items:center; gap:10px;
  text-decoration:none; font-family:var(--display);
  font-weight:700; font-size:1.02rem; letter-spacing:-.02em;
  color:var(--ink); flex:0 0 auto;
}
.brand .mark{ width:32px; height:32px; border-radius:9px; flex:0 0 auto; }
.brand .sub{ color:var(--accent); }

.nav-links{ display:flex; align-items:center; gap:4px; }
.nav-links a{
  text-decoration:none; color:var(--ink-soft);
  font-size:.94rem; font-weight:500;
  padding:8px 13px; border-radius:9px;
  transition:background .18s var(--ease), color .18s var(--ease);
}
.nav-links a:hover{ color:var(--ink); background:var(--bg-sunk); }
.nav-links a.on{ color:var(--ink); font-weight:600; }

.nav-toggle{
  display:none; width:42px; height:42px; border:1px solid var(--line);
  background:var(--card); border-radius:11px; cursor:pointer;
  align-items:center; justify-content:center; padding:0;
}
.nav-toggle span{ display:block; width:17px; height:1.8px; background:var(--ink); position:relative; }
.nav-toggle span::before,.nav-toggle span::after{
  content:''; position:absolute; left:0; width:17px; height:1.8px; background:var(--ink);
}
.nav-toggle span::before{ top:-5.5px; }
.nav-toggle span::after{ top:5.5px; }

/* --------------------------------------------------------------------------
   buttons
   -------------------------------------------------------------------------- */

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--sans); font-size:.95rem; font-weight:600;
  padding:12px 22px; border-radius:999px;
  text-decoration:none; cursor:pointer; border:1px solid transparent;
  transition:transform .16s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
  white-space:nowrap;
}
.btn:active{ transform:translateY(1px); }
.btn-primary{ background:var(--accent); color:#fff; }
.btn-primary:hover{ background:var(--accent-dk); }
.btn-ghost{ background:transparent; color:var(--ink); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--ink); }
.btn-sm{ padding:9px 16px; font-size:.88rem; }

.btn-row{ display:flex; flex-wrap:wrap; gap:12px; margin-top:26px; }

/* --------------------------------------------------------------------------
   hero
   -------------------------------------------------------------------------- */

.hero{ padding:86px 0 58px; }
.hero h1{ margin-bottom:.34em; }
.hero .lead{ font-size:1.2rem; }

/* compact hero for interior pages: tools, games, articles */
.hero-sm{ padding:40px 0 34px; }
.hero-sm h1{ font-size:clamp(1.9rem, 4.4vw, 2.7rem); }
.hero-sm .lead{ font-size:1.08rem; max-width:62ch; }

.hero-meta{
  display:flex; flex-wrap:wrap; gap:8px 20px; margin-top:26px;
  font-size:.9rem; color:var(--ink-faint); font-family:var(--mono);
}
.hero-meta span{ display:inline-flex; align-items:center; gap:7px; }
.dot{ width:6px; height:6px; border-radius:50%; background:var(--good); flex:0 0 auto; }

/* --------------------------------------------------------------------------
   cards, generic grid
   -------------------------------------------------------------------------- */

.grid{ display:grid; gap:var(--gap); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }

.card{
  background:var(--card); border:1px solid var(--line);
  border-radius:var(--radius); padding:var(--pad);
  text-decoration:none; color:inherit; display:block;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
a.card:hover{ border-color:var(--ink); transform:translateY(-2px); }
.card h3{ margin-bottom:.35em; }
.card p{ color:var(--ink-soft); font-size:.95rem; margin:0; }

.card-tag{
  display:inline-block; font-family:var(--mono); font-size:.68rem;
  letter-spacing:.09em; text-transform:uppercase; color:var(--accent);
  margin-bottom:11px;
}

/* the four doors on the home page */
.doors{ display:grid; grid-template-columns:repeat(4,1fr); gap:var(--gap); }
.door{
  background:var(--card); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:28px 24px 26px; text-decoration:none; color:inherit;
  display:flex; flex-direction:column; min-height:200px;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
.door:hover{ border-color:var(--ink); transform:translateY(-3px); }
.door .ico{ font-size:1.5rem; margin-bottom:14px; line-height:1; }
.door h3{ font-size:1.14rem; margin-bottom:.4em; }
.door p{ font-size:.92rem; color:var(--ink-soft); margin:0 0 auto; }
.door .go{
  margin-top:18px; font-size:.85rem; font-weight:600; color:var(--accent);
  display:inline-flex; align-items:center; gap:6px;
}

/* --------------------------------------------------------------------------
   tools
   -------------------------------------------------------------------------- */

.tool-card{ display:flex; flex-direction:column; gap:6px; }
.tool-card h3{ font-size:1.02rem; margin:0; }
.tool-card p{ font-size:.89rem; }

.tool-group{ margin-bottom:46px; }
.tool-group:last-child{ margin-bottom:0; }
.tool-group h2{ font-size:1.35rem; margin-bottom:.15em; }
.tool-group > p{ color:var(--ink-soft); font-size:.95rem; margin-bottom:22px; }

/* calculator shell */
.calc{
  background:var(--card); border:1px solid var(--line);
  border-radius:var(--radius-lg); padding:28px; margin:30px 0;
}
.calc-grid{ display:grid; grid-template-columns:1fr 1fr; gap:26px; }

.field{ margin-bottom:18px; }
.field:last-child{ margin-bottom:0; }
.field label{
  display:block; font-size:.86rem; font-weight:600;
  color:var(--ink-soft); margin-bottom:7px;
}
.field input[type=number],
.field input[type=text],
.field input[type=date],
.field select,
.field textarea{
  width:100%; font-family:var(--sans); font-size:1rem; color:var(--ink);
  background:var(--bg); border:1px solid var(--line);
  border-radius:10px; padding:11px 13px;
  transition:border-color .16s var(--ease);
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none; border-color:var(--accent);
}
.field input[type=range]{ width:100%; accent-color:var(--accent); }
.field .hint{ font-size:.78rem; color:var(--ink-faint); margin-top:5px; }

.result{
  background:var(--bg-sunk); border:1px solid var(--line);
  border-radius:var(--radius); padding:22px; text-align:center;
}
.result .big{
  font-family:var(--display); font-size:2.3rem; font-weight:700;
  letter-spacing:-.03em; color:var(--ink); line-height:1.1;
}
.result .cap{ font-size:.82rem; color:var(--ink-faint); margin-top:4px; }

.breakdown{ margin-top:18px; border-top:1px solid var(--line); padding-top:14px; }
.breakdown .row{
  display:flex; justify-content:space-between; align-items:baseline;
  padding:7px 0; font-size:.93rem;
}
.breakdown .row span:first-child{ color:var(--ink-soft); }
.breakdown .row span:last-child{ font-family:var(--mono); font-weight:500; }

/* --------------------------------------------------------------------------
   games
   -------------------------------------------------------------------------- */

.game-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:var(--gap); }

.game-card{
  position:relative; overflow:hidden;
  background:var(--ink); color:#fff;
  border:1px solid var(--ink); border-radius:var(--radius-lg);
  padding:24px 22px; min-height:186px;
  display:flex; flex-direction:column; text-decoration:none;
  transition:transform .2s var(--ease);
}
.game-card:hover{ transform:translateY(-3px); }
.game-card .art{
  position:absolute; inset:auto -12px -18px auto;
  font-size:5.4rem; line-height:1; opacity:.16; pointer-events:none;
}
.game-card h3{ color:#fff; font-size:1.14rem; margin-bottom:.35em; position:relative; }
.game-card p{ color:rgba(255,255,255,.66); font-size:.88rem; margin:0 0 auto; position:relative; }
.game-card .meta{
  position:relative; margin-top:16px; font-family:var(--mono);
  font-size:.72rem; letter-spacing:.07em; text-transform:uppercase;
  color:var(--accent);
}

/* game stage */
.stage{
  background:var(--ink); border-radius:var(--radius-lg);
  padding:20px; display:flex; flex-direction:column; align-items:center;
  gap:14px; margin:26px 0;
}
.stage canvas{ border-radius:10px; touch-action:none; background:#111; max-width:100%; }
.stage-bar{
  display:flex; gap:22px; align-items:center; justify-content:center;
  flex-wrap:wrap; color:#fff; font-family:var(--mono); font-size:.86rem;
}
.stage-bar b{ color:var(--accent); font-weight:600; }

/* --------------------------------------------------------------------------
   work showcase, no ads here
   -------------------------------------------------------------------------- */

.work-card{
  background:var(--card); border:1px solid var(--line);
  border-radius:var(--radius-lg); overflow:hidden;
  display:flex; flex-direction:column; text-decoration:none; color:inherit;
  transition:border-color .2s var(--ease), transform .2s var(--ease);
}
.work-card:hover{ border-color:var(--ink); transform:translateY(-3px); }
.work-card .shot{
  aspect-ratio:16/10; background:var(--bg-sunk);
  border-bottom:1px solid var(--line);
  display:flex; align-items:center; justify-content:center;
  font-size:2.6rem; color:var(--ink-faint);
}
.work-card .body{ padding:22px; }
.work-card h3{ font-size:1.08rem; margin-bottom:.35em; }
.work-card p{ font-size:.92rem; }

.price-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:var(--gap); }
.price{
  background:var(--card); border:1px solid var(--line);
  border-radius:var(--radius-lg); padding:28px; display:flex; flex-direction:column;
}
.price.featured{ border-color:var(--accent); border-width:2px; }
.price .tier{ font-family:var(--mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--accent); margin-bottom:10px; }
.price h3{ font-size:1.2rem; margin-bottom:.2em; }
.price .amt{ font-family:var(--display); font-size:1.75rem; font-weight:700; letter-spacing:-.03em; margin:6px 0 2px; }
.price .when{ font-size:.85rem; color:var(--ink-faint); margin-bottom:18px; }
.price ul{ list-style:none; padding:0; margin:0 0 22px; }
.price li{ font-size:.92rem; color:var(--ink-soft); padding:7px 0 7px 22px; position:relative; }
.price li::before{ content:''; position:absolute; left:0; top:15px; width:9px; height:2px; background:var(--accent); }
.price .btn{ margin-top:auto; }

/* --------------------------------------------------------------------------
   blog
   -------------------------------------------------------------------------- */

.post-card{ display:flex; flex-direction:column; }
.post-card .cat{
  font-family:var(--mono); font-size:.7rem; letter-spacing:.09em;
  text-transform:uppercase; color:var(--accent); margin-bottom:10px;
}
.post-card h3{ font-size:1.1rem; margin-bottom:.4em; }
.post-card p{ font-size:.93rem; margin-bottom:14px; }
.post-card .read{ font-size:.8rem; color:var(--ink-faint); font-family:var(--mono); margin-top:auto; }

/* article body, used by blog posts and tool explainers */
.prose{ max-width:730px; }
.prose h2{ font-size:1.45rem; margin-top:2em; margin-bottom:.5em; }
.prose h3{ font-size:1.12rem; margin-top:1.7em; margin-bottom:.45em; }
.prose p{ margin-bottom:1.15em; }
.prose ul,.prose ol{ margin:0 0 1.3em; padding-left:1.25em; }
.prose li{ margin-bottom:.5em; }
.prose a{ color:var(--accent); text-decoration:underline; text-underline-offset:3px; }
.prose a:hover{ text-decoration-thickness:2px; }
.prose blockquote{
  margin:1.6em 0; padding:4px 0 4px 22px;
  border-left:3px solid var(--accent); color:var(--ink-soft);
}
.prose .formula{
  font-family:var(--mono); font-size:.95rem; background:var(--bg-sunk);
  border:1px solid var(--line); border-radius:10px;
  padding:16px 18px; margin:1.4em 0; overflow-x:auto;
}
.prose table{ width:100%; border-collapse:collapse; margin:1.5em 0; font-size:.94rem; }
.prose th,.prose td{ text-align:left; padding:10px 12px; border-bottom:1px solid var(--line); }
.prose th{ font-weight:600; background:var(--bg-sunk); }

.byline{
  display:flex; align-items:center; gap:12px; flex-wrap:wrap;
  font-size:.88rem; color:var(--ink-faint);
  padding-bottom:22px; margin-bottom:30px; border-bottom:1px solid var(--line);
}

/* FAQ */
.faq{ margin-top:14px; }
.faq details{
  border-bottom:1px solid var(--line); padding:16px 0;
}
.faq summary{
  cursor:pointer; font-weight:600; font-size:1rem; list-style:none;
  display:flex; justify-content:space-between; gap:16px; align-items:flex-start;
}
.faq summary::-webkit-details-marker{ display:none; }
.faq summary::after{ content:'+'; color:var(--accent); font-size:1.3rem; line-height:1; flex:0 0 auto; }
.faq details[open] summary::after{ content:'\2212'; }
.faq details p{ margin:12px 0 0; color:var(--ink-soft); font-size:.96rem; }
.faq-item > div{ margin:12px 0 0; color:var(--ink-soft); font-size:.96rem; line-height:1.65; }
.faq-item > div p{ margin:0 0 10px; }
.faq-item > div p:last-child{ margin-bottom:0; }
.faq-item > div a{ color:var(--accent); }

/* breadcrumb */
.crumb{ font-size:.85rem; color:var(--ink-faint); margin-bottom:18px; }
.crumb a{ color:var(--ink-faint); text-decoration:none; }
.crumb a:hover{ color:var(--accent); }

/* --------------------------------------------------------------------------
   ad slots
   Only rendered on games, tools and blog pages.
   -------------------------------------------------------------------------- */

.ad{
  margin:36px auto; text-align:center; min-height:90px;
  display:flex; align-items:center; justify-content:center;
}
.ad::before{
  content:'Advertisement'; position:absolute; margin-top:-72px;
  font-size:.64rem; letter-spacing:.12em; text-transform:uppercase;
  color:var(--ink-faint); pointer-events:none;
}
.ad-inline{ margin:30px auto; }

/* --------------------------------------------------------------------------
   footer
   -------------------------------------------------------------------------- */

.foot{
  background:var(--ink); color:#fff; margin-top:80px;
  padding:56px 0 30px;
}
.foot .brand{ color:#fff; margin-bottom:14px; }
.foot-in{
  display:grid; grid-template-columns:1.7fr 1fr 1fr 1fr; gap:34px;
  padding-bottom:34px; border-bottom:1px solid rgba(255,255,255,.13);
}
.foot p{ color:rgba(255,255,255,.6); font-size:.92rem; max-width:34ch; }
.foot h5{ color:rgba(255,255,255,.45); margin-bottom:14px; }
.foot a{
  display:block; color:rgba(255,255,255,.76); text-decoration:none;
  font-size:.93rem; padding:5px 0;
  transition:color .16s var(--ease);
}
.foot a:hover{ color:var(--accent); }
.foot-copy{
  padding-top:22px; font-size:.85rem; color:rgba(255,255,255,.42);
  display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap;
}

/* --------------------------------------------------------------------------
   responsive
   -------------------------------------------------------------------------- */

@media (max-width:1000px){
  .doors,.game-grid,.grid-4{ grid-template-columns:repeat(2,1fr); }
  .grid-3,.price-grid{ grid-template-columns:repeat(2,1fr); }
  .foot-in{ grid-template-columns:1fr 1fr; gap:28px; }
}

@media (max-width:720px){
  body{ font-size:16.5px; }
  .section{ padding:54px 0; }
  .hero{ padding:58px 0 40px; }

  .nav-toggle{ display:inline-flex; }
  .nav-links{
    position:fixed; inset:66px 0 auto 0;
    background:var(--bg); border-bottom:1px solid var(--line);
    flex-direction:column; align-items:stretch; gap:0;
    padding:10px 22px 20px; display:none;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ padding:13px 4px; border-bottom:1px solid var(--line-soft); border-radius:0; }
  .nav-links a:last-child{ border-bottom:none; }
  .nav-links .btn{ margin-top:12px; justify-content:center; }

  .doors,.game-grid,.grid-2,.grid-3,.grid-4,.price-grid,.calc-grid{
    grid-template-columns:1fr;
  }
  .foot-in{ grid-template-columns:1fr 1fr; }
  .calc{ padding:20px; }
  .result .big{ font-size:1.95rem; }
}

@media (max-width:420px){
  .foot-in{ grid-template-columns:1fr; }
  .wrap{ padding-inline:18px; }
}

/* --------------------------------------------------------------------------
   accessibility and print
   -------------------------------------------------------------------------- */

:focus-visible{ outline:2.5px solid var(--accent); outline-offset:2px; border-radius:4px; }

@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}

.skip{
  position:absolute; left:-9999px; top:0; background:var(--accent); color:#fff;
  padding:11px 18px; z-index:100; border-radius:0 0 10px 0; font-weight:600;
}
.skip:focus{ left:0; }

@media print{
  .nav,.foot,.ad,.btn-row{ display:none; }
  body{ font-size:12pt; }
}