/* Bhuiyan Academy preview: base styles shared by site, portal and bare pages.
   Contents: 1 reset · 2 page + grain · 3 type · 4 layout · 5 links · 6 buttons
             7 forms · 8 ledger · 9 badge · 10 notice · 11 demo banner · 12 utilities
             13 motion states · 14 reduced motion */

/* 1 · Reset ------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul[class],ol[class]{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
img{height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
address{font-style:normal}
table{border-collapse:collapse}
hr{border:0}

/* 2 · Page + grain ------------------------------------------------------ */
:root{
  /* Gold darkened toward ink for small text on parchment (contrast). Built from tokens, no new colour. */
  --gold-text:color-mix(in srgb,var(--gold) 68%,var(--ink));
  --measure:64ch;
}
body{font-variant-numeric:tabular-nums lining-nums;
  min-height:100dvh;
  background:var(--parchment);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:clip;
}
@media (min-width:900px){body{font-size:1.0625rem}}
/* Fixed full-screen SVG feTurbulence overlay, multiplied at 3.5%. */
body::before{
  content:"";
  position:fixed;inset:0;z-index:9999;
  pointer-events:none;
  opacity:.035;
  
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n' x='0' y='0' width='100%25' height='100%25'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size:240px 240px;
}
::selection{background:var(--gold-soft);color:var(--claret-ink)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px}

/* 3 · Type -------------------------------------------------------------- */
h1,h2{font-family:var(--font-display);font-weight:600;text-wrap:balance}
h3,h4{font-family:var(--font-serif);font-weight:600;text-wrap:balance}
p{max-width:var(--measure);text-wrap:pretty}
.h-display{font-family:var(--font-display);font-weight:600;font-size:clamp(2.4rem,5.2vw,4.25rem);line-height:1.06;letter-spacing:-.015em;text-wrap:balance}
.h-section{font-family:var(--font-display);font-weight:600;font-size:clamp(1.85rem,3.2vw,2.6rem);line-height:1.12;letter-spacing:-.01em;text-wrap:balance}
.h-card{font-family:var(--font-serif);font-weight:600;font-size:1.35rem;line-height:1.3}
.eyebrow{
  font-family:var(--font-mono);font-weight:500;font-size:.75rem;line-height:1.4;
  text-transform:uppercase;letter-spacing:.07em;color:var(--gold-text);
}
.lead{font-size:1.1875rem;line-height:1.6;color:var(--ink)}
.serif-italic{font-family:var(--font-serif);font-style:italic}
.pullquote{
  font-family:var(--font-serif);font-style:italic;font-size:1.5rem;line-height:1.45;
  border-left:1px solid var(--gold);padding-left:1.25rem;max-width:44ch;
}
.pullquote cite{display:block;margin-top:.75rem;font:500 .75rem/1.4 var(--font-mono);font-style:normal;text-transform:uppercase;letter-spacing:.07em;color:var(--slate)}
.muted{color:var(--slate)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.prose>*+*{margin-top:1em}
.prose h2{font-size:clamp(1.5rem,2.4vw,2rem);line-height:1.15;margin-top:2em}
.prose h3{font-size:1.35rem;margin-top:1.6em}
.prose ul{padding-left:1.1em}

/* 4 · Layout ------------------------------------------------------------ */
.container{width:100%;max-width:calc(var(--container) + 2*var(--gutter));margin-inline:auto;padding-inline:var(--gutter)}
.grid{display:grid;grid-template-columns:minmax(0,1fr);column-gap:var(--gutter);row-gap:var(--gutter)}
@media (min-width:900px){
  .grid{grid-template-columns:repeat(12,minmax(0,1fr))}
  .col-3{grid-column-end:span 3}.col-4{grid-column-end:span 4}.col-5{grid-column-end:span 5}
  .col-6{grid-column-end:span 6}.col-7{grid-column-end:span 7}.col-8{grid-column-end:span 8}
  .col-12{grid-column:1/-1}
  .start-2{grid-column-start:2}.start-5{grid-column-start:5}.start-6{grid-column-start:6}
  .start-7{grid-column-start:7}.start-8{grid-column-start:8}.start-9{grid-column-start:9}
}
.stack>*+*{margin-top:var(--stack,1rem)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1rem}
.skip-link{
  position:absolute;left:12px;top:-60px;z-index:200;
  background:var(--claret);color:var(--parchment);padding:.6rem 1rem;border-radius:var(--radius-s);text-decoration:none;
}
.skip-link:focus{top:12px}

/* 5 · Links ------------------------------------------------------------- */
a{color:var(--claret)}
/* Underline draws left to right on hover; hairline gold-soft rests underneath. */
a:not([class]),.link{
  text-decoration:none;
  background:
    linear-gradient(var(--gold),var(--gold)) 0 100%/0 1px no-repeat,
    linear-gradient(var(--gold-soft),var(--gold-soft)) 0 100%/100% 1px no-repeat;
  padding-bottom:1px;
  transition:background-size var(--dur-reveal) var(--ease-out),color var(--dur-hover);
}
a:not([class]):hover,.link:hover{background-size:100% 1px,100% 1px;color:var(--claret-deep)}

/* 6 · Buttons ----------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.8em 1.4em;border:1px solid transparent;border-radius:var(--radius-s);
  font-family:var(--font-body);font-weight:500;font-size:.9375rem;line-height:1.2;text-decoration:none;
  cursor:pointer;
  transition:transform var(--dur-hover) var(--ease-out),box-shadow var(--dur-hover) var(--ease-out),background-color var(--dur-hover),border-color var(--dur-hover),color var(--dur-hover);
}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.btn:active{transform:scale(.98);box-shadow:none}
.btn--sm{padding:.6em 1.1em;font-size:.875rem}
.btn--primary{background:var(--claret);color:var(--parchment)}
.btn--primary:hover{background:var(--claret-deep);color:var(--parchment)}
.btn--secondary{background:transparent;border-color:var(--claret);color:var(--claret)}
.btn--secondary:hover{background:rgba(107,31,42,.06);color:var(--claret-deep)}
/* On claret grounds */
.btn--light{background:var(--parchment);color:var(--claret-deep)}
.btn--light:hover{background:var(--paper);color:var(--claret-deep)}
.btn--outline-light{background:transparent;border-color:var(--gold-soft);color:var(--parchment)}
.btn--outline-light:hover{background:rgba(244,239,230,.08);color:var(--parchment)}
/* Tertiary: text link with a gold underline that draws */
.btn--text{
  padding:0 0 3px;border:0;border-radius:0;background:
    linear-gradient(var(--gold),var(--gold)) 0 100%/0 1px no-repeat,
    linear-gradient(var(--gold-soft),var(--gold-soft)) 0 100%/100% 1px no-repeat;
  color:var(--claret);
  transition:background-size var(--dur-reveal) var(--ease-out),color var(--dur-hover);
}
.btn--text:hover{transform:none;box-shadow:none;background-size:100% 1px,100% 1px;color:var(--claret-deep)}
.btn--text:active{transform:scale(.98)}
.btn[disabled],.btn[aria-disabled="true"]{opacity:.5;pointer-events:none}

/* 7 · Forms ------------------------------------------------------------- */
.field{display:grid;gap:.4rem;margin-bottom:1.25rem}
.field__label{font-weight:500;font-size:.9375rem;color:var(--ink)}
.field__label .req{color:var(--slate);font-weight:400}
.field__hint{font-size:.8125rem;color:var(--slate)}
.field__input{
  width:100%;padding:.75rem .9rem;background:var(--paper);color:var(--ink);
  border:1px solid var(--line);border-radius:var(--radius-s);
  transition:border-color var(--dur-hover),box-shadow var(--dur-hover);
}
textarea.field__input{min-height:8rem;resize:vertical}
select.field__input{appearance:none;padding-right:2.4rem;background-image:linear-gradient(45deg,transparent 50%,var(--slate) 50%),linear-gradient(135deg,var(--slate) 50%,transparent 50%);background-position:calc(100% - 18px) 55%,calc(100% - 13px) 55%;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.field__input:hover{border-color:var(--slate)}
.field__input:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-color:var(--claret)}
.field__input.is-invalid,.field__input[aria-invalid="true"]{border-color:var(--due)}
.field__error{font-size:.875rem;color:var(--due);margin:0}
.field__error[hidden]{display:none}
.form-success{
  background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--claret);
  padding:1.5rem 1.75rem;display:grid;gap:.5rem;justify-items:start;
}
.form-success:focus{outline:none}
.form-success__title{margin:0;font-family:var(--font-serif);font-weight:600;font-size:1.35rem;color:var(--ink)}
.form-success p{margin:0;color:var(--slate)}
.form-success .btn--text{margin-top:.5rem;padding:0}

/* 8 · Ledger: hairline rows, never stat cards ---------------------------- */
.ledger{margin:0;padding:0;list-style:none;border-bottom:1px solid var(--line)}
.ledger__row{
  display:grid;grid-template-columns:minmax(6.5rem,1fr) 2fr;gap:1rem 2rem;align-items:baseline;
  padding:1rem 0;border-top:1px solid var(--line);
}
.ledger__key{font-family:var(--font-mono);font-weight:500;font-size:.75rem;text-transform:uppercase;letter-spacing:.07em;color:var(--slate)}
.ledger__val{color:var(--ink)}
.ledger__val.num{text-align:right}
/* Proof variant: the figure is the key, set large in display type */
.ledger--proof .ledger__row{grid-template-columns:minmax(9rem,5fr) 7fr;padding:1.4rem 0;align-items:center}
.ledger--proof .ledger__key{font-family:var(--font-display);font-size:clamp(2rem,4vw,3.25rem);line-height:1;text-transform:none;letter-spacing:-.015em;color:var(--claret)}
.ledger--proof .ledger__val{font-family:var(--font-serif);font-size:1.0625rem}
@media (max-width:599px){.ledger__row,.ledger--proof .ledger__row{grid-template-columns:1fr;gap:.25rem}.ledger__val.num{text-align:left}}

/* 9 · Badge: square, mono, tinted at 12% -------------------------------- */
.badge{
  --b:var(--slate);
  display:inline-block;padding:.2rem .5rem;border:1px solid color-mix(in srgb,var(--b) 30%,transparent);border-radius:0;
  background:color-mix(in srgb,var(--b) 12%,transparent);color:var(--b);
  font-family:var(--font-mono);font-weight:500;font-size:.6875rem;line-height:1.3;text-transform:uppercase;letter-spacing:.06em;white-space:nowrap;
}
.badge--ok{--b:var(--ok)}
.badge--warn{--b:var(--warn)}
.badge--due{--b:var(--due)}

/* 10 · Notice item ------------------------------------------------------ */
.notice-list{border-bottom:1px solid var(--line)}
.notice{display:grid;grid-template-columns:9rem 1fr;gap:.5rem 2rem;padding:1.4rem 0;border-top:1px solid var(--line)}
.notice__meta{display:grid;gap:.35rem;align-content:start}
.notice__date{font-family:var(--font-mono);font-size:.8125rem;color:var(--slate);font-variant-numeric:tabular-nums}
.notice__pin{font-family:var(--font-mono);font-weight:500;font-size:.6875rem;text-transform:uppercase;letter-spacing:.07em;color:var(--gold-text)}
.notice__title{font-family:var(--font-serif);font-size:1.35rem;line-height:1.3}
.notice__summary{color:var(--slate);margin-top:.35rem}
@media (max-width:599px){.notice{grid-template-columns:1fr}.notice__meta{grid-auto-flow:column;justify-content:space-between}}

/* 11 · Demo banner ------------------------------------------------------ */
.demo-banner{
  background:var(--parchment);border-bottom:1px solid var(--line);
  padding:.55rem var(--gutter);text-align:center;
  font-family:var(--font-mono);font-size:.6875rem;line-height:1.5;text-transform:uppercase;letter-spacing:.06em;color:var(--slate);
}

/* 12 · Utilities -------------------------------------------------------- */
.visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0}
.photo{filter:saturate(.85);object-fit:cover}
[hidden]{display:none}

/* 13 · Motion states (js/motion.js owns the animation) ------------------- */
/* .has-motion is set by the head partial only when reduced motion is not requested. */
.has-motion [data-reveal] .reveal-child,
.has-motion [data-reveal]:not(#pathway):not(:has(.reveal-child)){opacity:0}

/* 14 · Reduced motion --------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  :root{--dur-reveal:0ms;--dur-hover:0ms}
  html{scroll-behavior:auto}
  .btn:hover,.btn:active{transform:none}
}