/* =====================================================================
   Intern Exam Prep: shared blog styles
   Design tokens mirrored verbatim from internexamprep.ca (OKLCH), so the
   blog matches the live site: light is default, .dark overrides, square
   corners throughout, Geist (body) + Outfit (headings) + mono labels.
   ===================================================================== */

@font-face{
  font-family:'Geist Variable';
  font-style:normal;font-display:swap;font-weight:100 900;
  src:url('https://cdn.jsdelivr.net/fontsource/fonts/geist:vf@latest/latin-wght-normal.woff2') format('woff2-variations');
}
@font-face{
  font-family:'Outfit Variable';
  font-style:normal;font-display:swap;font-weight:100 900;
  src:url('https://cdn.jsdelivr.net/fontsource/fonts/outfit:vf@latest/latin-wght-normal.woff2') format('woff2-variations');
}

/* ---------- LIGHT theme (default), from the site :root ---------- */
:root{
  --heading:'Outfit Variable','Geist Variable',system-ui,-apple-system,Segoe UI,sans-serif;
  --sans:'Geist Variable',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;

  --background:oklch(100% 0 0);
  --foreground:oklch(14.8% .004 228.8);
  --surface:oklch(100% 0 0);
  --surface-2:oklch(96.3% .002 197.1);
  --border:oklch(92.5% .005 214.3);
  --muted-foreground:oklch(56% .021 213.5);

  --primary:oklch(50% .134 242.749);
  --primary-foreground:oklch(98% .013 236.62);
  --primary-hover:oklch(44.3% .11 240.79);

  --link:oklch(50% .134 242.749);
  --logo:#0A3360;

  --container:1180px;
}

/* ---------- DARK theme, from the site .dark ---------- */
.dark{
  --background:oklch(14.8% .004 228.8);
  --foreground:oklch(98.7% .002 197.1);
  --surface:oklch(21.8% .008 223.9);
  --surface-2:oklch(27.5% .011 216.9);
  --border:oklch(100% 0 0 / .12);
  --muted-foreground:oklch(72.3% .014 214.4);

  --primary:oklch(44.3% .11 240.79);
  --primary-foreground:oklch(98% .013 236.62);
  --primary-hover:oklch(50% .134 242.749);

  --link:#4DB8EB;
  --logo:#4DB8EB;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--foreground);
  background:var(--background);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.reading{width:100%;max-width:760px;margin:0 auto;padding:0 24px;}

/* smooth theme transition on the elements that change */
body,header.site,.card,.cover,.cta-band,footer.site,.chip,.nav-cta,.nav-signin,
.theme-toggle,.news-form input,.article-tag,.callout,.takeaways,.author-box,
.prose table th,.prose td,.prose blockquote,.article-cover{
  transition:background-color .25s ease, border-color .25s ease, color .2s ease;
}

/* small uppercase labels use the mono face, like the site */
.eyebrow,.read-min,.foot-col h4,.callout .lbl,.takeaways h4,.tag,.article-tag,.price-label{
  font-family:var(--mono);
}

/* ---------- Header ---------- */
header.site{
  position:sticky;top:0;z-index:50;
  background:color-mix(in oklab, var(--background) 60%, transparent);
  backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--border);
}
.nav{position:relative;display:flex;align-items:center;gap:24px;justify-content:space-between;height:56px;}
.brand{display:flex;align-items:center;gap:10px;}
.site-nav{flex:1;display:flex;align-items:center;justify-content:center;gap:24px;}
.site-nav a{font-size:14px;font-weight:500;color:var(--muted-foreground);transition:color .15s;}
.site-nav a:hover{color:var(--foreground);}
.nav-toggle{
  display:none;order:1;width:36px;height:36px;border:none;background:transparent;color:var(--foreground);
  place-items:center;cursor:pointer;border-radius:0;transition:background .15s,color .15s;
}
.nav-toggle:hover{background:var(--surface-2);}
@media(max-width:768px){
  .nav-toggle{display:grid;}
  .site-nav{
    display:none;position:absolute;top:100%;left:0;right:0;z-index:50;
    flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface);border-bottom:1px solid var(--border);padding:4px 2px;
  }
  .site-nav.open{display:flex;}
  .site-nav a{padding:12px 6px;font-size:15px;}
}
.brand .logo{
  display:inline-block;width:51px;height:32px;flex:none;
  font-size:0;line-height:0;color:transparent;letter-spacing:0;
  background-color:var(--logo);
  -webkit-mask:url(/logo.svg) left center/contain no-repeat;
  mask:url(/logo.svg) left center/contain no-repeat;
}
.brand .name{font-family:var(--heading);font-weight:700;font-size:16px;color:var(--foreground);line-height:1.15;}
.brand .name small{display:block;font-family:var(--sans);font-size:11px;font-weight:500;color:var(--muted-foreground);letter-spacing:.02em;margin-top:2px;}
.nav-actions{display:flex;align-items:center;gap:12px;}
/* Mobile (matches homepage): keep the full brand lockup; move Sign in into the menu. */
.nav-cta-mobile{display:none;}
@media(max-width:640px){
  .nav-actions .nav-cta{display:none;}
  #siteNav .nav-cta-mobile{
    display:flex;align-items:center;justify-content:center;height:42px;margin:8px 6px 4px;padding:0;
    background:var(--primary);color:var(--primary-foreground);
    font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
    transition:background .15s;
  }
  #siteNav .nav-cta-mobile:hover{background:color-mix(in oklab,var(--primary) 80%,transparent);}
}
.nav-signin{
  padding:9px 14px;font-size:13.5px;font-weight:600;letter-spacing:.02em;color:var(--foreground);
  text-transform:uppercase;font-family:var(--mono);
}
.nav-signin:hover{color:var(--link);}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;height:36px;padding:0 16px;border-radius:0;
  background:var(--primary);color:var(--primary-foreground);
  font-family:var(--sans);font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;
  transition:background .15s;
}
.nav-cta:hover{background:color-mix(in oklab,var(--primary) 80%,transparent);}
.theme-toggle{
  width:36px;height:36px;border:none;background:transparent;color:var(--foreground);
  display:grid;place-items:center;cursor:pointer;border-radius:0;transition:background .15s,color .15s;
}
.theme-toggle:hover{background:var(--surface-2);}
.theme-toggle svg{width:16px;height:16px;}
.theme-toggle .icon-sun{display:none;}
.theme-toggle .icon-moon{display:block;}
.dark .theme-toggle .icon-moon{display:none;}
.dark .theme-toggle .icon-sun{display:block;}

/* ---------- Reading progress ---------- */
.reading-progress{
  position:fixed;top:56px;left:0;height:3px;width:0;background:var(--link);
  z-index:60;transition:width .08s linear;
}

/* ---------- Hero (listing) ---------- */
.hero{padding:62px 0 38px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:12px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--link);margin-bottom:18px;
}
.eyebrow .dot{width:7px;height:7px;background:var(--link);}
.hero h1{
  font-family:var(--heading);font-weight:700;font-size:clamp(38px,6vw,60px);line-height:1.03;
  letter-spacing:-.02em;margin:0 0 18px;max-width:16ch;color:var(--foreground);
}
.hero p{font-size:18px;color:var(--muted-foreground);max-width:60ch;margin:0;}

/* ---------- Filters ---------- */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin:34px 0 8px;}
.chip{
  border:1px solid var(--border);background:var(--surface);color:var(--muted-foreground);
  padding:9px 16px;border-radius:0;font-size:13.5px;font-weight:500;cursor:pointer;
  transition:.15s;font-family:var(--sans);
}
.chip:hover{border-color:var(--muted-foreground);color:var(--foreground);}
.chip.active{background:var(--foreground);color:var(--background);border-color:var(--foreground);}

/* ---------- Post listing ---------- */
.posts{padding:24px 0 70px;}
.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}

.card{
  background:var(--surface);border:1px solid var(--border);border-radius:0;
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .18s ease, border-color .18s ease, background-color .25s ease;
}
.card:hover{transform:translateY(-3px);border-color:var(--muted-foreground);}
.card.hidden{display:none;}
a.card{color:inherit;}
a.card:hover .card-link{gap:12px;}

/* Featured mirrors the "Full Bundle" card: content left, muted panel right */
.featured{grid-column:1 / -1;display:grid;grid-template-columns:1.1fr .9fr;}
.featured .body{order:0;padding:42px;}
.featured .cover{order:1;min-height:320px;border-bottom:none;border-left:1px solid var(--border);}
.featured h2{font-size:clamp(25px,3.2vw,34px);}
@media(max-width:820px){
  .featured{grid-template-columns:1fr;}
  .featured .cover{order:-1;border-left:none;border-bottom:1px solid var(--border);min-height:190px;}
}

/* Cover: a muted blueprint panel (theme-aware), like the site's price/muted half */
.cover{
  position:relative;min-height:150px;overflow:hidden;
  background:var(--surface-2);color:var(--muted-foreground);
}
.cover::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(color-mix(in oklab, var(--foreground) 7%, transparent) 1px,transparent 1px),
    linear-gradient(90deg,color-mix(in oklab, var(--foreground) 7%, transparent) 1px,transparent 1px);
  background-size:24px 24px;
  mask-image:radial-gradient(circle at 78% 30%, #000 0%, transparent 80%);
}
.cover .glyph{
  position:absolute;right:-6px;bottom:-20px;font-size:128px;line-height:1;opacity:.10;filter:grayscale(1);
}
.cover .tag{
  position:absolute;top:16px;left:16px;z-index:2;
  background:color-mix(in oklab, var(--link) 16%, var(--surface));
  color:var(--link);border:1px solid color-mix(in oklab, var(--link) 35%, transparent);
  padding:5px 11px;border-radius:0;font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;
}
.cover .read-min{
  position:absolute;bottom:14px;left:16px;z-index:2;font-size:11.5px;font-weight:500;
  display:flex;align-items:center;gap:6px;letter-spacing:.03em;text-transform:uppercase;
}

.card .body{padding:24px;display:flex;flex-direction:column;flex:1;}
.card h2,.card h3{font-family:var(--heading);font-weight:700;letter-spacing:-.01em;margin:0 0 11px;line-height:1.16;color:var(--foreground);}
.card h3{font-size:19px;}
.card .excerpt{color:var(--muted-foreground);font-size:14px;margin:0 0 20px;flex:1;line-height:1.55;}
.meta{display:flex;align-items:center;gap:11px;font-size:12.5px;color:var(--muted-foreground);margin-top:auto;padding-top:16px;border-top:1px solid var(--border);}
.meta .avatar{
  width:48px;height:30px;flex:none;border-radius:0;font-size:0;color:transparent;letter-spacing:0;
  background:var(--logo);
  -webkit-mask:url(/logo.svg) left center/contain no-repeat;
  mask:url(/logo.svg) left center/contain no-repeat;
}
.meta .who{font-weight:600;color:var(--foreground);}
.card-link{
  margin-top:18px;align-self:flex-start;color:var(--link);font-weight:600;font-size:14px;
  display:inline-flex;align-items:center;gap:8px;transition:gap .15s;text-transform:uppercase;letter-spacing:.03em;font-family:var(--mono);
}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--surface-2);border:1px solid var(--border);border-radius:0;
  padding:48px;margin:8px 0 78px;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(color-mix(in oklab, var(--foreground) 6%, transparent) 1px,transparent 1px),
    linear-gradient(90deg,color-mix(in oklab, var(--foreground) 6%, transparent) 1px,transparent 1px);
  background-size:30px 30px;mask-image:radial-gradient(circle at 92% 8%, #000, transparent 70%);
}
.cta-band .inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-band h3{font-family:var(--heading);font-weight:700;font-size:29px;margin:0 0 8px;color:var(--foreground);}
.cta-band p{margin:0;color:var(--muted-foreground);max-width:46ch;}
.news-form{display:flex;gap:10px;flex-wrap:wrap;}
.news-form input{
  border:1px solid var(--border);background:var(--surface);color:var(--foreground);
  padding:13px 16px;border-radius:0;font-size:15px;min-width:230px;font-family:var(--sans);
}
.news-form input::placeholder{color:var(--muted-foreground);}
.news-form button{
  background:var(--primary);color:var(--primary-foreground);border:none;padding:13px 24px;border-radius:0;
  font-weight:600;font-size:13px;cursor:pointer;font-family:var(--mono);text-transform:uppercase;letter-spacing:.04em;
  transition:background .15s;
}
.news-form button:hover{background:var(--primary-hover);}

/* ---------- Footer ---------- */
footer.site{background:var(--surface-2);color:var(--muted-foreground);padding:60px 0 32px;border-top:1px solid var(--border);}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:40px;}
footer.site .brand .logo{color:var(--logo);}
footer.site .brand{gap:11px;align-items:center;}
footer.site .brand .mark{
  width:51px;height:32px;flex:none;border-radius:0;font-size:0;line-height:0;color:transparent;letter-spacing:0;
  background:var(--logo);
  -webkit-mask:url(/logo.svg) left center/contain no-repeat;
  mask:url(/logo.svg) left center/contain no-repeat;
}
footer.site .brand .name{font-family:var(--heading);font-weight:700;font-size:16px;color:var(--foreground);line-height:1.15;}
footer.site .brand .name small{display:block;font-family:var(--sans);font-size:11px;font-weight:500;color:var(--muted-foreground);letter-spacing:.02em;margin-top:2px;}
.foot-about{margin:16px 0 0;font-size:14px;color:var(--muted-foreground);max-width:34ch;}
.foot-contact{margin:14px 0 0;font-size:14px;color:var(--muted-foreground);}
.foot-contact a{color:var(--foreground);font-weight:500;}
.foot-contact a:hover{text-decoration:underline;text-underline-offset:3px;}
.foot-col h4{color:var(--foreground);font-size:12px;letter-spacing:.1em;text-transform:uppercase;margin:4px 0 16px;}
.foot-col a{display:block;padding:7px 0;font-size:14px;color:var(--muted-foreground);transition:color .15s;}
.foot-col a:hover{color:var(--foreground);}
.foot-social .social-row{display:flex;gap:10px;flex-wrap:wrap;}
.foot-social a.social{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;padding:0;
  border:1px solid var(--border);border-radius:8px;color:var(--muted-foreground);
  transition:color .15s,border-color .15s,background .15s;
}
.foot-social a.social:hover{color:var(--foreground);border-color:var(--foreground);background:color-mix(in oklch,var(--foreground) 6%,transparent);}
.foot-social a.social svg{width:18px;height:18px;display:block;}
.foot-bottom{
  margin-top:46px;padding-top:24px;border-top:1px solid var(--border);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--muted-foreground);
}
.foot-legal{display:flex;gap:18px;align-items:center;flex-wrap:wrap;}
.foot-legal a{color:var(--muted-foreground);transition:color .15s;}
.foot-legal a:hover{color:var(--foreground);}

/* =====================================================================
   Article page
   ===================================================================== */
.breadcrumb{padding:22px 0 0;}
.breadcrumb ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;font-size:12.5px;color:var(--muted-foreground);text-transform:uppercase;letter-spacing:.04em;font-family:var(--mono);}
.breadcrumb li{display:flex;align-items:center;gap:8px;}
.breadcrumb li::after{content:"/";opacity:.45;}
.breadcrumb li:last-child::after{content:"";}
.breadcrumb a:hover{color:var(--link);}
.breadcrumb li[aria-current]{color:var(--foreground);}

.article-hero{padding:26px 0 26px;}
.article-tag{
  display:inline-block;padding:6px 13px;border-radius:0;font-size:11.5px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;
  color:var(--link);background:color-mix(in oklab, var(--link) 14%, var(--surface));
  border:1px solid color-mix(in oklab, var(--link) 35%, transparent);margin-bottom:18px;
}
.article-hero h1{
  font-family:var(--heading);font-weight:700;font-size:clamp(30px,4.6vw,46px);line-height:1.08;
  letter-spacing:-.02em;margin:0 0 18px;color:var(--foreground);
}
.article-hero .deck{font-size:19px;color:var(--muted-foreground);margin:0 0 26px;line-height:1.55;}
.article-meta{display:flex;align-items:center;gap:13px;font-size:13.5px;color:var(--muted-foreground);}
.article-meta .avatar{
  width:56px;height:35px;flex:none;border-radius:0;font-size:0;color:transparent;letter-spacing:0;
  background:var(--logo);
  -webkit-mask:url(/logo.svg) left center/contain no-repeat;
  mask:url(/logo.svg) left center/contain no-repeat;
}
.article-meta .who{font-weight:600;color:var(--foreground);display:block;font-size:14.5px;}
.article-meta .sub{font-size:13px;}

.article-cover{
  height:300px;border-radius:0;margin:30px auto 6px;position:relative;overflow:hidden;
  background:var(--surface-2);border:1px solid var(--border);
}
@media(max-width:600px){.article-cover{height:200px;}}

/* ---------- Prose ---------- */
.prose{padding:34px 0 18px;}
.prose p{margin:0 0 20px;color:var(--foreground);font-size:17.5px;line-height:1.72;}
.prose h2{
  font-family:var(--heading);font-weight:700;font-size:clamp(24px,3vw,30px);letter-spacing:-.01em;
  margin:44px 0 14px;line-height:1.2;scroll-margin-top:86px;color:var(--foreground);
}
.prose h3{font-family:var(--heading);font-weight:600;font-size:21px;margin:30px 0 10px;letter-spacing:-.01em;color:var(--foreground);}
.prose ul,.prose ol{margin:0 0 22px;padding-left:24px;color:var(--foreground);font-size:17px;}
.prose li{margin-bottom:10px;line-height:1.65;}
.prose li::marker{color:var(--link);}
.prose strong{color:var(--foreground);font-weight:700;}
.prose a{color:var(--link);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;}
.prose a:hover{opacity:.8;}
.prose hr{border:none;border-top:1px solid var(--border);margin:40px 0;}

.prose blockquote{
  margin:28px 0;padding:6px 0 6px 24px;border-left:3px solid var(--link);
  font-size:20px;line-height:1.5;color:var(--foreground);font-style:italic;
}

.prose table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15.5px;}
.prose th,.prose td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--border);vertical-align:top;color:var(--foreground);}
.prose thead th{background:var(--surface-2);font-weight:700;border-bottom:2px solid var(--border);}
.prose tbody tr:hover{background:color-mix(in oklab, var(--foreground) 3%, transparent);}

.callout{
  background:color-mix(in oklab, var(--link) 8%, var(--surface));
  border:1px solid color-mix(in oklab, var(--link) 25%, transparent);
  border-left:4px solid var(--link);border-radius:0;padding:20px 24px;margin:28px 0;
}
.callout p{margin:0;font-size:16px;color:var(--foreground);}
.callout .lbl{display:block;font-weight:700;color:var(--link);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:7px;}

.takeaways{background:var(--surface-2);border:1px solid var(--border);border-radius:0;padding:26px 30px;margin:38px 0 10px;}
.takeaways h4{margin:0 0 14px;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--foreground);}
.takeaways ul{margin:0;padding-left:22px;}
.takeaways li{color:var(--foreground);font-size:16px;margin-bottom:10px;}
.takeaways li::marker{color:var(--link);}

/* author + back */
.article-foot{padding:10px 0 4px;}
.author-box{
  display:flex;gap:18px;align-items:flex-start;background:var(--surface);border:1px solid var(--border);
  border-radius:0;padding:24px 26px;margin:30px 0;
}
.author-box .avatar{
  width:64px;height:40px;flex:none;border-radius:0;font-size:0;color:transparent;letter-spacing:0;
  background:var(--logo);
  -webkit-mask:url(/logo.svg) left center/contain no-repeat;
  mask:url(/logo.svg) left center/contain no-repeat;
}
.author-box h4{margin:0 0 5px;font-family:var(--heading);font-size:18px;font-weight:600;color:var(--foreground);}
.author-box p{margin:0;font-size:14.5px;color:var(--muted-foreground);}
.back-link{display:inline-flex;align-items:center;gap:8px;color:var(--link);font-weight:600;font-size:13px;margin:6px 0 4px;transition:gap .15s;text-transform:uppercase;letter-spacing:.04em;font-family:var(--mono);}
.back-link:hover{gap:12px;}

/* related */
.related{padding:30px 0 10px;}
.related h2{font-family:var(--heading);font-weight:700;font-size:26px;margin:0 0 24px;letter-spacing:-.01em;color:var(--foreground);}
.related .grid{grid-template-columns:repeat(3,minmax(0,1fr));}

/* ---------- Responsive ---------- */
@media(max-width:1080px){.grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media(max-width:920px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px;}}
@media(max-width:880px){.related .grid{grid-template-columns:1fr;}}
@media(max-width:680px){
  .grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 24px;}
  .foot-grid{grid-template-columns:1fr;}
  .prose p{font-size:16.5px;}
  .nav-signin{display:none;}
}

body.no-scroll{overflow:hidden;}

/* Embedded in signed-in dashboard (iframe ?embed=1) */
html[data-embed="1"] header.site,
html[data-embed="1"] footer.site,
html[data-embed="1"] .reading-progress{display:none;}
html[data-embed="1"] main{padding-top:0;}
/* The iframe is sized to content by the parent, so the embedded doc never
   scrolls on its own — avoids a second scrollbar inside the dashboard. */
html[data-embed="1"],
html[data-embed="1"] body{overflow:hidden;}