:root{
  --fsc-radius: 12px;
  --fsc-input-radius: 10px;
  --fsc-btn-radius: 10px;
  --fsc-btn-height: 38px;
  --fsc-btn-font-size: 13px;
  --fsc-gap: 14px;
  --fsc-border: rgba(0,0,0,.08);
  --fsc-bg: rgba(255,255,255,.92);
  --fsc-bg2: rgba(255,255,255,.98);
  --fsc-text: rgba(0,0,0,.88);
  --fsc-muted: rgba(0,0,0,.56);
  --fsc-shadow: 0 10px 30px rgba(0,0,0,.06);
  --fsc-shadow2: 0 8px 20px rgba(0,0,0,.07);
}

.fsc-app{ width:100%; max-width: var(--fsc-maxw, 1200px); margin: 0 auto; }
.fsc-shell{
  display:grid;
  grid-template-columns: 280px 1fr;
  gap: var(--fsc-gap);
  align-items: start;
}
@media (max-width: 900px){
  .fsc-shell{ grid-template-columns: 1fr; }
}
.fsc-sidebar{
  background: var(--fsc-bg);
  border: 1px solid var(--fsc-border);
  border-radius: var(--fsc-radius);
  box-shadow: var(--fsc-shadow);
  padding: 14px;
  position: sticky;
  top: 18px;
}
.fsc-sidebar__top{ display:flex; flex-direction:column; gap:10px; }
.fsc-search, .fsc-cat{
  width:100%;
  border-radius: var(--fsc-input-radius);
  border:1px solid var(--fsc-border);
  padding: 10px 12px;
  background: #fff;
}
.fsc-nav{
  margin-top: 12px;
  display:flex;
  flex-direction:column;
  gap: 8px;
  max-height: 70vh;
  overflow:auto;
  padding-right: 4px;
}
.fsc-nav a{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--fsc-border);
  border-radius: calc(var(--fsc-radius) - 4px);
  color: var(--fsc-text);
  text-decoration:none;
  background: #fff;
}
.fsc-nav a:hover{ border-color: rgba(0,0,0,.14); box-shadow: var(--fsc-shadow2); }
.fsc-nav a[aria-current="page"]{
  border-color: rgba(0,0,0,.18);
  box-shadow: 0 10px 24px rgba(0,0,0,.08);
}
.fsc-nav .fsc-pill{
  font-size: 12px;
  color: var(--fsc-muted);
}
.fsc-main{
  background: var(--fsc-bg2);
  border: 1px solid var(--fsc-border);
  border-radius: var(--fsc-radius);
  box-shadow: var(--fsc-shadow);
  padding: 18px;
  min-height: 520px;
}
.fsc-main__header{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap: 12px;
}
.fsc-title{
  margin: 0;
  font-size: 28px;
  line-height: 1.2;
  color: var(--fsc-text);
}
.fsc-desc{ margin-top: 10px; color: var(--fsc-muted); }
.fsc-calc{ margin-top: 18px; }
.fsc-actions{ display:flex; gap: 10px; flex-wrap:wrap; }
.fsc-app .fsc-btn{
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  border: 1px solid var(--fsc-border);
  background: #fff;
  color: var(--fsc-text) !important;
  padding: 0 12px;
  border-radius: var(--fsc-btn-radius);
  height: var(--fsc-btn-height);
  line-height: 1;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
  text-decoration: none;
  box-shadow: none;
}
.fsc-app .fsc-btn:hover{
  border-color: rgba(0,0,0,.22);
  box-shadow: var(--fsc-shadow2);
}
.fsc-app .fsc-btn:active{ transform: translateY(1px); }
.fsc-app .fsc-btn:focus{
  outline: none;
  box-shadow: 0 0 0 3px rgba(0,0,0,.08);
}
.fsc-app .fsc-btn.is-active{ border-color: var(--fsc-accent, rgba(0,0,0,.30)); }

.fsc-app .fsc-btn--ghost{ background: transparent; }
.fsc-app .fsc-btn--primary{
  background: var(--fsc-accent);
  border-color: var(--fsc-accent);
  color: #fff !important;
}
.fsc-app .fsc-btn--primary:hover{ filter: brightness(0.95); }
.fsc-app .fsc-btn--primary:hover{ filter: brightness(0.98); }
.fsc-app .fsc-btn--icon{
  width: var(--fsc-btn-h, 40px);
  padding: 0;
}

.fsc-app .fsc-nav__right{ display:flex; align-items:center; gap: 10px; }

.fsc-app .fsc-fav-btn{
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0 2px;
  color: var(--fsc-muted);
}
.fsc-app .fsc-fav-btn[aria-pressed="true"]{
  color: var(--fsc-accent, #2e7d32);
}
.fsc-empty{
  padding: 16px;
  border-radius: calc(var(--fsc-radius) - 4px);
  border: 1px dashed rgba(0,0,0,.18);
  color: var(--fsc-muted);
}
.fsc-single{ width:100%; }
.fsc-details{ margin-top: 16px; }
.fsc-details summary{ cursor:pointer; }
.fsc-seo-body{ margin-top: 10px; color: var(--fsc-muted); }


/* Currency switcher + header actions */
.fsc-currency{
  width:100%;
  margin-top:8px;
  padding:10px 12px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(0,0,0,.35);
  color:#fff;
}
.fsc-main__header{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
.fsc-main__actions{ flex:0 0 auto; }
.fsc-download[disabled]{ opacity:.55; cursor:not-allowed; }

/* Single calculator route wrapper */
.fsc-app--single{width:100%;max-width:var(--fsc-maxw,1100px);margin-left:auto;margin-right:auto;padding:16px;}
.fsc-app--single .fsc-wrap{width:100%;}