/* ==========================================================================
   IJRM-SSS — International Journal of Radiation Medicine
   Screening · Surveillance · Survivorship  —  "The Orange Journal"
   Sibling of the SIRiiM design system: same type scale and layout grammar.
   The journal's identity colour is orange; the Society's rust #A43711 is
   carried through as the family thread (cover spine, section rules).
   ========================================================================== */

:root{
  color-scheme: light;

  /* Brand — the rust orange of the SIRiiM mark. This is "The Orange Journal". */
  --orange:     #A43711;  /* identity fill: masthead, cover, accents */
  --orange-600: #8A2D0D;  /* darker fill */
  --orange-700: #8A2D0D;  /* links, small type on light (7.9:1) */
  --orange-300: #D4693D;  /* on dark grounds */
  --orange-100: #F6E4DB;  /* tint chips */

  /* Neutrals (warm) */
  --ink:     #17100A;     /* near-black — nav, type on orange */
  --ink-2:   #2A1F16;
  --body:    #4A3F35;
  --muted:   #786B5F;
  --line:    #E7DED4;
  --line-2:  #F2EBE3;
  --paper:   #FDFBF9;
  --paper-2: #F7F1EA;
  --white:   #FFFFFF;

  /* Society thread */
  --rust:    #A43711;

  --serif: "Source Serif 4", "Iowan Old Style", Georgia, "Times New Roman", serif;
  --sans:  "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --wrap: 1180px;
  --gut: clamp(20px, 5vw, 48px);
  --radius: 3px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0; background:var(--paper); color:var(--body);
  font-family:var(--sans); font-size:17px; line-height:1.65;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
img{ max-width:100%; display:block; }
a{ color:var(--orange-700); text-decoration:none; }
a:hover{ text-decoration:underline; text-underline-offset:3px; }
:focus-visible{ outline:2px solid var(--orange-700); outline-offset:2px; }

h1,h2,h3,h4{ font-family:var(--serif); color:var(--ink); margin:0 0 .5em; line-height:1.16; font-weight:600; letter-spacing:-.01em; }
h1{ font-size:clamp(2rem,4.2vw,3.15rem); }
h2{ font-size:clamp(1.55rem,2.8vw,2.25rem); }
h3{ font-size:1.18rem; }
p{ margin:0 0 1.1em; }
.lede{ font-size:clamp(1.03rem,1.6vw,1.24rem); line-height:1.6; color:var(--ink-2); }

.wrap{ max-width:var(--wrap); margin-inline:auto; padding-inline:var(--gut); }
.narrow{ max-width:760px; }
section{ padding-block:clamp(52px,7vw,92px); }

.eyebrow{
  font-size:.72rem; font-weight:650; letter-spacing:.16em; text-transform:uppercase;
  color:var(--orange-700); margin:0 0 .9rem; display:flex; align-items:center; gap:.6rem;
}
.eyebrow::before{ content:""; width:26px; height:2px; background:var(--orange); flex:none; }
.eyebrow.on-dark{ color:var(--orange-300); }
.eyebrow.on-dark::before{ background:var(--orange-300); }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; gap:.55rem; font-size:.94rem; font-weight:600;
  padding:.82rem 1.5rem; border-radius:var(--radius); border:1px solid transparent; cursor:pointer;
  transition:background .18s, color .18s, border-color .18s, transform .18s;
}
.btn:hover{ text-decoration:none; transform:translateY(-1px); }
.btn-primary{ background:var(--ink); color:#fff; }
.btn-primary:hover{ background:#000; color:#fff; }
.btn-rust{ background:var(--orange); color:#fff; }        /* identity button */
.btn-rust:hover{ background:var(--orange-600); color:#fff; }
.btn-ghost{ border-color:rgba(255,255,255,.42); color:#fff; }
.btn-ghost:hover{ background:rgba(255,255,255,.1); border-color:#fff; }
.btn-outline{ border-color:var(--line); color:var(--ink); background:var(--white); }
.btn-outline:hover{ border-color:var(--orange); color:var(--orange-700); }
.btn .arw{ transition:transform .18s; }
.btn:hover .arw{ transform:translateX(3px); }

/* Utility bar */
.util{ background:var(--ink); color:#A2958A; font-size:.8rem; }
.util .wrap{ display:flex; justify-content:space-between; align-items:center; gap:1rem; min-height:38px; flex-wrap:wrap; }
.util a{ color:#DED3C8; }
.util-links{ display:flex; gap:1.35rem; }
.util .society-link{ display:inline-flex; align-items:center; gap:.45rem; font-weight:600; color:#fff; }
.util .society-link .dot{ width:7px; height:7px; border-radius:50%; background:var(--orange-300); }

/* Masthead — the orange nameplate */
.masthead{
  background:var(--orange); color:#fff;
  background-image:linear-gradient(168deg, #B23D13 0%, #A43711 54%, #8E2F0E 100%);
  border-bottom:3px solid var(--ink);
}
.plate{ display:flex; align-items:flex-end; justify-content:space-between; gap:2rem; padding-block:2rem 1.7rem; flex-wrap:wrap; }
.plate .name{ display:block; }
.plate .name:hover{ text-decoration:none; }
.plate .jt{ font-family:var(--serif); font-size:clamp(1.4rem,3.1vw,2.1rem); color:#fff; line-height:1.08; letter-spacing:-.02em; }
.plate .js{
  display:block; margin-top:.6rem;
  font-size:.76rem; letter-spacing:.19em; text-transform:uppercase; color:rgba(255,255,255,.78); font-weight:550;
}
.plate .js b{ color:#fff; font-weight:750; }
.plate .official{
  font-size:.78rem; color:rgba(255,255,255,.76); text-align:right; line-height:1.5;
}
.plate .official .of{ display:block; font-size:.68rem; letter-spacing:.14em; text-transform:uppercase; color:rgba(255,255,255,.55); margin-bottom:.2rem; }
.plate .official .soc{ display:block; color:#fff; font-weight:600; font-size:.85rem; line-height:1.4; white-space:nowrap; }
.plate .official .soc a{ color:#fff; }
.plate .official .issn{ display:block; margin-top:.5rem; font-size:.72rem; color:rgba(255,255,255,.58); letter-spacing:.04em; white-space:nowrap; }
.plate .abbr{
  display:inline-block; margin-bottom:.7rem; font-size:.7rem; font-weight:700; letter-spacing:.18em;
  text-transform:uppercase; color:var(--orange-300); background:var(--ink); padding:.32rem .66rem; border-radius:2px;
}




.navbar{ background:var(--ink); position:sticky; top:0; z-index:40; }
.navbar .wrap{ display:flex; align-items:center; justify-content:space-between; gap:1rem; min-height:52px; }
.nav{ display:flex; align-items:center; gap:.2rem; flex-wrap:wrap; }
.nav a{ color:rgba(255,255,255,.86); font-size:.87rem; font-weight:550; padding:.5rem .78rem; border-radius:var(--radius); }
.nav a:hover{ background:rgba(255,255,255,.1); color:#fff; text-decoration:none; }
.nav a[aria-current="page"]{ color:var(--orange-300); background:rgba(255,255,255,.08); }
.navbar .submit{ background:var(--orange); color:#fff; font-weight:650; padding:.5rem 1rem; border-radius:var(--radius); font-size:.87rem; }
.navbar .submit:hover{ background:#B23D13; color:#fff; text-decoration:none; }
.navtoggle{ display:none; background:none; border:1px solid rgba(255,255,255,.4); color:#fff;
  border-radius:var(--radius); padding:.35rem .65rem; font-size:.82rem; cursor:pointer; }

/* Search */
.searchbar{ background:var(--paper-2); border-bottom:1px solid var(--line); padding-block:1.1rem; }
.searchbar form{ display:flex; gap:.5rem; max-width:640px; }
.searchbar input{ min-width:0; }
.searchbar .btn{ flex:none; }
.searchbar input{
  flex:1; padding:.7rem .9rem; border:1px solid var(--line); border-radius:var(--radius);
  font-family:var(--sans); font-size:.94rem; background:#fff; color:var(--ink);
}
.searchbar input:focus{ outline:2px solid var(--orange); outline-offset:-1px; }

/* Hero / current issue */
.hero{ background:var(--white); border-bottom:1px solid var(--line); }
.hero-inner{ display:grid; grid-template-columns:minmax(0,1.5fr) minmax(0,1fr); gap:clamp(2rem,5vw,4.5rem); align-items:center; }

/* The cover — this is what earns the nickname */
.cover{
  background:linear-gradient(163deg,#BC431A 0%, #A43711 48%, #8A2D0D 100%);
  color:#fff; border-radius:2px; padding:2rem 1.7rem; aspect-ratio:3/4;
  display:flex; flex-direction:column; justify-content:space-between;
  box-shadow:0 26px 50px -26px rgba(120,50,6,.75); position:relative; overflow:hidden;
}
.cover::before{ content:""; position:absolute; left:0; top:0; bottom:0; width:11px; background:var(--ink); z-index:2; }
.cover::after{
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.22;
  background:repeating-radial-gradient(circle at 118% 52%, transparent 0 26px, rgba(255,255,255,.5) 26px 27px);
  mask-image:linear-gradient(255deg, #000, transparent 68%);
  -webkit-mask-image:linear-gradient(255deg, #000, transparent 68%);
}
.cover > *{ position:relative; z-index:1; }
.cover .ct{ font-family:var(--serif); font-size:1.4rem; line-height:1.18; color:#fff; }
.cover .cs{ font-size:.72rem; letter-spacing:.14em; text-transform:uppercase; color:rgba(255,255,255,.66); }
.cover .cv{ font-size:.78rem; color:rgba(255,255,255,.82); border-top:1px solid rgba(255,255,255,.26); padding-top:.8rem; }

/* SSS pillars */
.sss-band{ background:var(--ink); color:#fff; }
.sss-band h2{ color:#fff; }
.sss-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(250px,1fr)); gap:2.2rem; margin-top:2.4rem; }
.sss-grid .s{ border-top:2px solid var(--orange); padding-top:1.2rem; }
.sss-grid .s .l{ font-family:var(--serif); font-size:2.6rem; color:var(--orange-300); line-height:1; }
.sss-grid .s h3{ color:#fff; margin:.5rem 0 .4rem; }
.sss-grid .s p{ color:rgba(255,255,255,.72); font-size:.93rem; margin:0; }

/* Article list */
.arts{ list-style:none; padding:0; margin:2rem 0 0; }
.art{ border-top:1px solid var(--line); padding:1.5rem 0; display:grid; grid-template-columns:110px minmax(0,1fr); gap:1.6rem; }
.art:last-child{ border-bottom:1px solid var(--line); }
.art .type{ font-size:.7rem; font-weight:650; letter-spacing:.11em; text-transform:uppercase; color:var(--orange-700); padding-top:.28rem; }
.art h3{ font-size:1.14rem; margin:0 0 .4rem; }
.art h3 a{ color:var(--ink); }
.art h3 a:hover{ color:var(--orange-700); }
.art .authors{ font-size:.92rem; color:var(--body); margin:0 0 .35rem; }
.art .meta{ font-size:.82rem; color:var(--muted); margin:0; display:flex; gap:1rem; flex-wrap:wrap; }
.art .meta .oa{ color:#1D6B3E; font-weight:650; }

/* Cards */
.grid{ display:grid; gap:1.15rem; }
.g3{ grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.g2{ grid-template-columns:repeat(auto-fit,minmax(330px,1fr)); }
.card{ background:var(--white); border:1px solid var(--line); border-radius:var(--radius); padding:1.7rem 1.6rem;
  transition:border-color .18s, box-shadow .18s, transform .18s; }
.card:hover{ border-color:var(--orange); box-shadow:0 10px 30px -18px rgba(120,50,6,.45); transform:translateY(-2px); }
.card h3{ font-size:1.1rem; margin-bottom:.4rem; }
.card p{ font-size:.93rem; color:var(--muted); margin:0; }
.card .tag{ display:inline-block; font-size:.68rem; font-weight:650; letter-spacing:.12em; text-transform:uppercase;
  color:var(--orange-700); background:var(--orange-100); padding:.28rem .6rem; border-radius:2px; margin-bottom:.85rem; }

/* Authors band */
.authors-band{ background:var(--paper-2); border-block:1px solid var(--line); }
.steps{ display:grid; grid-template-columns:repeat(auto-fit,minmax(210px,1fr)); gap:1.6rem; margin-top:2rem; }
.step .n{ font-family:var(--serif); font-size:1.9rem; color:var(--orange-700); line-height:1; }
.step h3{ font-size:1.02rem; margin:.5rem 0 .35rem; }
.step p{ font-size:.9rem; color:var(--muted); margin:0; }

/* Metrics */
.metrics{ display:grid; grid-template-columns:repeat(auto-fit,minmax(170px,1fr)); gap:2px; background:var(--line-2); }
.metric{ background:var(--white); padding:1.7rem 1.4rem; }
.metric span{ display:block; font-family:var(--serif); font-size:1.9rem; color:var(--ink); line-height:1.1; }
.metric small{ font-size:.76rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); }

/* Page header + prose */
.pagehead{ background:var(--paper-2); border-bottom:1px solid var(--line); padding-block:clamp(44px,6vw,74px); }
.crumbs{ font-size:.8rem; color:var(--muted); margin-bottom:1rem; }
.crumbs a{ color:var(--muted); }
.prose h2{ margin-top:2.4rem; }
.prose ul,.prose ol{ padding-left:1.15rem; }
.prose li{ margin-bottom:.5rem; }
.note{ background:var(--orange-100); border-left:3px solid var(--orange); padding:1.1rem 1.3rem;
  border-radius:0 var(--radius) var(--radius) 0; font-size:.94rem; color:var(--ink); }
.note strong{ color:var(--orange-700); }
table{ width:100%; border-collapse:collapse; font-size:.93rem; margin:1.4rem 0; }
th,td{ text-align:left; padding:.7rem .8rem; border-bottom:1px solid var(--line); }
th{ font-family:var(--sans); font-size:.76rem; letter-spacing:.1em; text-transform:uppercase; color:var(--muted); font-weight:650; }

/* Footer */
footer{ background:var(--ink); color:#9C8F84; font-size:.9rem; padding-block:clamp(48px,6vw,72px) 2rem; }
footer h4{ color:#fff; font-family:var(--sans); font-size:.74rem; letter-spacing:.14em; text-transform:uppercase; margin:0 0 1rem; font-weight:650; }
footer a{ color:#C6B9AD; }
footer a:hover{ color:#fff; }
.fgrid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(160px,1fr)); gap:2.4rem 2rem; }
@media (min-width:900px){ .fgrid{ grid-template-columns:1.6fr 1fr 1fr 1fr; } }
.fgrid ul{ list-style:none; padding:0; margin:0; display:grid; gap:.55rem; }
.fmark{ font-family:var(--serif); color:#fff; font-size:1.15rem; line-height:1.25; margin-bottom:.6rem; }
.fmark small{ display:block; font-family:var(--sans); font-size:.7rem; letter-spacing:.18em; text-transform:uppercase; color:var(--orange-300); margin-top:.45rem; }
.fbottom{ margin-top:2.8rem; padding-top:1.4rem; border-top:1px solid rgba(255,255,255,.11);
  display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; font-size:.82rem; color:#7C6F65; }
.fbottom a{ color:#A89A8F; }

@media (max-width: 900px){
  .hero-inner{ grid-template-columns:1fr; }
  .cover{ max-width:260px; order:-1; }
  .art{ grid-template-columns:1fr; gap:.5rem; }
}
@media (max-width: 480px){
  .searchbar .btn{ padding-inline:1rem; }
}
@media (max-width: 420px){
  .plate .abbr{ font-size:.6rem; letter-spacing:.1em; padding:.28rem .5rem; }
  .plate .js{ font-size:.68rem; letter-spacing:.13em; }
}
@media (max-width: 780px){
  .navtoggle{ display:block; }
  .nav{ display:none; position:absolute; top:100%; left:0; right:0; background:var(--ink);
    flex-direction:column; align-items:stretch; padding:.6rem var(--gut) 1rem; z-index:50; border-top:1px solid rgba(255,255,255,.12); }
  .nav.open{ display:flex; }
  .navbar{ position:relative; }
  .util-links{ display:none; }
  .plate{ flex-direction:column; align-items:flex-start; }
  .plate .official{ text-align:left; }
  .plate .official .soc, .plate .official .issn{ white-space:normal; }
  .plate .official .soc br{ display:none; }
}
@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important; scroll-behavior:auto !important; }
}

/* New-site caveat strip ------------------------------------------------- */
.newsite{ background:#FFF6EC; color:#5A4636; border-bottom:1px solid #EBD9C6; font-size:.82rem; line-height:1.55; }
.newsite .wrap{ display:flex; align-items:flex-start; gap:.75rem; padding-block:.62rem; }
.newsite .badge{
  flex:none; margin-top:.12rem; font-size:.62rem; font-weight:700; letter-spacing:.14em; text-transform:uppercase;
  color:#fff; background:#8A2D0D; padding:.22rem .5rem; border-radius:2px;
}
.newsite strong{ color:#7A2709; font-weight:650; }
@media (max-width:600px){ .newsite{ font-size:.78rem; } .newsite .badge{ display:none; } }

/* Institute support line ------------------------------------------------- */
.institute{
  display:flex; align-items:baseline; gap:.5rem; flex-wrap:wrap;
  font-size:.84rem; color:#A89A8F;
}
.institute .lbl{ font-size:.68rem; letter-spacing:.15em; text-transform:uppercase; color:#7C6F65; }
.institute a{ color:#fff; font-weight:600; }
.support-note{
  background:var(--paper-2); border:1px solid var(--line); border-left:3px solid var(--orange);
  border-radius:0 var(--radius) var(--radius) 0; padding:1.2rem 1.4rem; font-size:.94rem; color:var(--ink-2);
}
.support-note strong{ color:var(--orange-700); }

.inst-util{ color:#BFB2A7; }
.inst-util a{ color:#fff; font-weight:600; }
@media (max-width:1100px){ .inst-util{ display:none; } }