/* =========================================================================
   Portage River Light — "Archival Survey"
   Editorial reference skin over Bootstrap 5. Deliberately un-corporate:
   ruled sections, numbered plates, ledger tables, aged-paper ground.
   ========================================================================= */

:root{
  --slate:#16303f;          /* deep slate navy — masthead, headings */
  --slate-700:#1f4356;
  --slate-300:#5c7c8d;
  --paper:#f4f0e6;          /* limestone cream — page ground */
  --paper-2:#ece6d8;        /* deeper tint for panels */
  --paper-3:#e2dac8;
  --oxide:#9c3a2b;          /* oxidised red accent */
  --oxide-soft:#c2593f;
  --ink:#23201c;            /* body text */
  --ink-soft:#5a5348;
  --rule:#c9bfa8;
  --measure:38rem;
}

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

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

body{
  margin:0;
  background:var(--paper);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(156,58,43,.045) 0, transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(22,48,63,.05) 0, transparent 45%);
  background-attachment:fixed;
  color:var(--ink);
  font-family:"Karla","Helvetica Neue",Arial,sans-serif;
  font-size:1.0625rem;
  line-height:1.68;
  -webkit-font-smoothing:antialiased;
}

img{max-width:100%;height:auto;display:block;}

a{color:var(--slate-700);text-underline-offset:.16em;text-decoration-thickness:1px;}
a:hover,a:focus{color:var(--oxide);}

.skip{
  position:absolute;left:-9999px;top:0;z-index:1000;
  background:var(--slate);color:var(--paper);padding:.7rem 1.1rem;
  font-weight:700;text-decoration:none;
}
.skip:focus{left:.5rem;top:.5rem;color:var(--paper);}

/* ---------------------------------------------------------- masthead */
.masthead{
  background:var(--slate);
  color:var(--paper);
  border-bottom:4px solid var(--oxide);
}
.masthead-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.75rem 1.5rem;padding:1.35rem 0 1.25rem;
}
.brand{
  display:flex;align-items:center;gap:.85rem;
  text-decoration:none;color:inherit;min-width:0;
}
.brand:hover,.brand:focus{color:inherit;}
.brand-mark{
  flex:0 0 auto;width:34px;height:44px;position:relative;
  background:
    linear-gradient(to bottom, var(--oxide) 0 34%, var(--paper) 34% 40%, var(--paper) 40% 100%);
  clip-path:polygon(34% 0,66% 0,88% 100%,12% 100%);
}
.brand-text{display:flex;flex-direction:column;min-width:0;}
.brand-name{
  font-family:"Spectral",Georgia,serif;font-weight:600;
  font-size:clamp(1.3rem,1.05rem + 1.1vw,1.85rem);
  letter-spacing:.055em;text-transform:uppercase;line-height:1.15;
}
.brand-sub{
  font-size:.7rem;letter-spacing:.22em;text-transform:uppercase;
  color:#a9c0cc;margin-top:.28rem;
}
.masthead-note{
  margin:0;font-family:"Spectral",Georgia,serif;font-style:italic;
  font-size:.95rem;color:#b6cbd6;min-width:0;
}

/* ---------------------------------------------------------------- nav */
.site-nav{
  background:var(--paper-2);
  border-bottom:1px solid var(--rule);
  padding:0;
}
.site-nav .container{display:block;}
.site-nav .navbar-nav{
  display:flex;flex-wrap:wrap;min-width:0;      /* structural: can never overflow */
  gap:0;margin:0;padding:0;list-style:none;
}
.site-nav .nav-item{min-width:0;}
.site-nav .nav-link{
  display:block;padding:.85rem 1.05rem;
  font-size:.775rem;letter-spacing:.13em;text-transform:uppercase;
  font-weight:700;color:var(--slate-700);
  border-bottom:3px solid transparent;
  white-space:nowrap;
}
.site-nav .nav-link:hover,.site-nav .nav-link:focus{
  color:var(--oxide);background:rgba(255,255,255,.5);
}
.site-nav .nav-link.active{color:var(--oxide);border-bottom-color:var(--oxide);}

.navbar-toggler{
  display:flex;align-items:center;gap:.6rem;
  border:1px solid var(--rule);border-radius:0;
  padding:.6rem .9rem;margin:.6rem 0;
  background:transparent;box-shadow:none;
}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(156,58,43,.28);}
.toggler-bars{display:inline-flex;flex-direction:column;gap:4px;}
.toggler-bars span{display:block;width:20px;height:2px;background:var(--slate);}
.toggler-label{
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  font-weight:700;color:var(--slate);
}
@media (max-width:991.98px){
  .site-nav .nav-link{
    padding:.7rem .25rem;border-bottom:1px solid var(--rule);
    border-left:3px solid transparent;white-space:normal;
  }
  .site-nav .nav-link.active{border-left-color:var(--oxide);border-bottom-color:var(--rule);}
  .site-nav .navbar-nav{display:block;padding-bottom:.5rem;}
}

/* -------------------------------------------------------------- sheet */
main{padding:2.75rem 0 3.5rem;}
.sheet{
  max-width:53rem;margin:0 auto;
  background:#fbf8f1;
  border:1px solid var(--rule);
  box-shadow:0 1px 0 rgba(255,255,255,.9) inset, 0 10px 34px -26px rgba(22,48,63,.55);
  padding:clamp(1.4rem,1rem + 2.4vw,3.4rem);
}

/* ---------------------------------------------------------- typography */
.sheet h1{
  font-family:"Spectral",Georgia,serif;font-weight:700;
  font-size:clamp(1.85rem,1.4rem + 2.1vw,2.9rem);
  line-height:1.14;color:var(--slate);margin:0 0 1.15rem;
  letter-spacing:-.012em;
}
.sheet h1::after{
  content:"";display:block;width:5.5rem;height:3px;
  background:var(--oxide);margin-top:1.05rem;
}
.sheet h2{
  font-family:"Spectral",Georgia,serif;font-weight:600;
  font-size:clamp(1.28rem,1.1rem + .8vw,1.62rem);
  color:var(--slate);margin:2.5rem 0 .85rem;
  padding-top:.9rem;border-top:1px solid var(--rule);
  letter-spacing:-.005em;
}
.sheet h3{
  font-family:"Spectral",Georgia,serif;font-weight:600;
  font-size:1.1rem;color:var(--oxide);
  margin:1.7rem 0 .5rem;letter-spacing:.005em;
}
.sheet p{margin:0 0 1.1rem;max-width:var(--measure);}
.sheet ul,.sheet ol{max-width:var(--measure);margin:0 0 1.25rem;padding-left:1.2rem;}
.sheet li{margin-bottom:.5rem;}
.sheet li::marker{color:var(--oxide);}
.sheet strong{font-weight:700;color:var(--slate);}
.sheet em{font-family:"Spectral",Georgia,serif;font-style:italic;}

.lede{
  font-family:"Spectral",Georgia,serif;
  font-size:clamp(1.08rem,1rem + .5vw,1.3rem);
  line-height:1.52;color:var(--slate-700);
  border-left:3px solid var(--oxide);
  padding-left:1.15rem;margin-bottom:1.9rem !important;
}

/* -------------------------------------------------------------- plates */
.plate{
  margin:2rem 0 2.1rem;padding:0;
  border:1px solid var(--rule);background:var(--paper-2);
}
.plate img{width:100%;}
.plate figcaption{
  padding:.75rem 1rem .85rem;font-size:.865rem;line-height:1.5;
  color:var(--ink-soft);border-top:1px solid var(--rule);
}
.plate-no{
  display:inline-block;font-family:"Spectral",Georgia,serif;font-weight:700;
  font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--oxide);margin-right:.6rem;
}
@media (min-width:1200px){
  .plate-wide{margin-left:-2.5rem;margin-right:-2.5rem;}
}

/* ------------------------------------------------------------- notices */
.notice{
  background:var(--paper-3);
  border:1px solid var(--rule);border-left:4px solid var(--slate-300);
  padding:1.1rem 1.25rem .35rem;margin:2rem 0;
}
.notice p{max-width:none;font-size:.95rem;}
.notice-strong{border-left-color:var(--oxide);background:#f3e9e2;}
.notice-strong h3{margin-top:.15rem;color:var(--oxide);}

/* -------------------------------------------------------------- ledger */
.ledger{
  width:100%;border-collapse:collapse;margin:1.5rem 0 1.9rem;
  background:var(--paper-2);border:1px solid var(--rule);
  font-size:.95rem;
}
.ledger caption{
  caption-side:top;text-align:left;padding:0 0 .6rem;
  font-size:.85rem;color:var(--ink-soft);font-style:italic;
}
.ledger th,.ledger td{padding:.55rem .85rem;border-bottom:1px solid var(--rule);text-align:left;}
.ledger thead th{
  background:var(--slate);color:var(--paper);
  font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;font-weight:700;
}
.ledger tbody tr:nth-child(even){background:rgba(255,255,255,.45);}
.ledger tbody tr:last-child td{border-bottom:0;}
.table-scroll{overflow-x:auto;}

/* -------------------------------------------------------------- footer */
.site-footer{
  background:var(--slate);color:#c4d5de;
  border-top:4px solid var(--oxide);
  padding:2.6rem 0 2rem;margin-top:1rem;
  font-size:.92rem;
}
.foot-h{
  font-family:"Spectral",Georgia,serif;font-size:.78rem;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:#8fb0bf;
  margin:0 0 .8rem;
}
.foot-list{list-style:none;margin:0;padding:0;}
.foot-list li{margin-bottom:.42rem;}
.foot-list a{color:var(--paper);text-decoration:none;}
.foot-list a:hover,.foot-list a:focus{color:var(--oxide-soft);text-decoration:underline;}
.foot-rule{height:1px;background:rgba(196,213,222,.25);margin:2rem 0 1.4rem;}
.foot-legal p{margin:0 0 .7rem;max-width:60rem;font-size:.855rem;line-height:1.6;color:#a9c0cc;}
.foot-legal strong{color:var(--paper);}
.foot-legal .copy{
  margin-top:1.2rem;font-size:.78rem;letter-spacing:.12em;
  text-transform:uppercase;color:#7f9fae;
}

/* --------------------------------------------------- safety + a11y */
/* Content is NEVER hidden waiting on JavaScript. Any reveal animation is
   progressive enhancement only. */
[data-aos]{opacity:1 !important;transform:none !important;}

:focus-visible{outline:3px solid var(--oxide);outline-offset:2px;}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

@media print{
  .site-nav,.site-footer,.skip{display:none;}
  body{background:#fff;}
  .sheet{border:0;box-shadow:none;max-width:none;}
}