:root{
  --bg:#ffffff;
  --bg-soft:#f8f9fa;

  --text:#0b1220;
  --muted:#5b667a;

  --navy:#0b1b3a;
  --navy-2:#102a56;

  --border: rgba(9, 23, 56, 0.12);
  --shadow-sm: 0 10px 22px rgba(11, 18, 32, 0.06);
}

html, body{ height:100%; }
body{
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container-narrow{ max-width: 1140px; }

.site-header{
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.logo-link{
  display:inline-flex;
  align-items:center;
  text-decoration:none;
}

/* Horizontal logo placeholder fits your 1500x600 ratio */
.site-logo{
  max-height: 83px;
  width: auto;
  display:block;
  object-fit: contain;
}
.footer-logo{ max-height: 40px; }

/* SEARCH (dropdown) */
.search-wrap{ min-width: 280px; max-width: 520px; width: 100%; }
.search-input{
  border: 1px solid rgba(9,23,56,0.14);
  border-radius: 999px;
  padding-left: 2.6rem;
  height: 44px;
}
.search-input:focus{
  border-color: rgba(13,110,253,0.55);
  box-shadow: 0 0 0 .2rem rgba(13,110,253,0.12);
}
.search-icon{
  position:absolute;
  top:50%;
  left: 14px;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events:none;
}

/* Dropdown result panel */
.search-dropdown{
  position:absolute;
  top: calc(44px + 8px);
  left:0;
  right:0;
  background:#fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  overflow:hidden;
  z-index: 50;
}
.search-item{
  display:flex;
  justify-content: space-between;
  align-items:center;
  gap: 12px;
  padding: 10px 12px;
  cursor:pointer;
}
.search-item:hover, .search-item[aria-selected="true"]{
  background: rgba(11,27,58,0.06);
}
.search-item .title{
  font-weight: 600;
  color: var(--navy);
  font-size: .95rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.search-item .badge{
  font-size: .75rem;
}

/* HOMEPAGE HERO */
.hero{
  background:
    radial-gradient(1100px 520px at 15% -10%, rgba(13,110,253,0.08), transparent 60%),
    radial-gradient(900px 450px at 95% 10%, rgba(11,27,58,0.06), transparent 55%);
  border-bottom: 1px solid var(--border);
}

/* Live calculator shell */
.calc-shell{
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.calc-topbar{
  display:flex;
  align-items:center;
  justify-content: space-between;
  gap:.75rem;
  padding: .75rem .9rem;
  border-bottom: 1px solid var(--border);
}
.calc-title strong{ color: var(--navy); font-size: .95rem; }
.calc-title span{ color: var(--muted); font-size: .82rem; }

.calc-display{
  padding: .85rem;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}
.display-field{
  width:100%;
  border-radius: 14px;
  border: 1px solid rgba(9,23,56,0.14);
  padding: .85rem .95rem;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--navy);
  background: #fff;
}

/* GREY calculator theme + 3D buttons */
.calc-pad{ padding: .9rem; }
.calc-grid{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: .6rem;
}

/* 3D button look */
.calc-btn{
  border-radius: 14px;
  border: 1px solid rgba(9,23,56,0.14);
  background: linear-gradient(#f6f7f8, #e7eaee);
  box-shadow:
    0 6px 0 rgba(11,27,58,0.10),
    0 10px 18px rgba(11,18,32,0.08);
  color: var(--navy);
  font-weight: 800;
  min-height: 48px;
  transition: transform .06s ease, box-shadow .06s ease, filter .06s ease;
  user-select:none;
}
.calc-btn:hover{
  filter: brightness(0.99);
}
.calc-btn:active{
  transform: translateY(2px);
  box-shadow:
    0 3px 0 rgba(11,27,58,0.10),
    0 8px 14px rgba(11,18,32,0.08);
}

/* Operators: slightly darker grey */
.calc-btn.op{
  background: linear-gradient(#eef1f4, #dfe4ea);
}

/* C button in yellow */
.calc-btn.clear{
  background: linear-gradient(#ffe38a, #f7c948);
  border-color: rgba(245, 158, 11, 0.45);
  color: #3a2a00;
}

/* Equals: navy */
.calc-btn.equal{
  background: linear-gradient(var(--navy), var(--navy-2));
  border-color: var(--navy);
  color:#fff;
}

.calc-btn.wide{ grid-column: span 2; }

/* Mobile behavior:
   Under 500px: hide the BIG calculator pad and show compact bar */
@media (max-width: 500px){
  .calc-pad{ display:none; }
  .calc-compact{ display:block !important; }
}

/* Compact bar on mobile */
.calc-compact{
  display:none;
  padding: .85rem;
  border-top: 1px solid var(--border);
  background: #f3f4f6;
}
.calc-compact .btn{
  border-radius: 999px;
}

/* Homepage category layout (no cards) */
.cat-grid{
  display:grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}
@media (max-width: 992px){
  .cat-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 576px){
  .cat-grid{ grid-template-columns: 1fr; }
}

.cat-block{
  min-width: 0;
}
.cat-img{
  width: 68px;
  height: 68px;
  border-radius: 14px;
  object-fit: cover;
  display:block;
  border: 1px solid var(--border);
  background: #eef2f7;
}
.cat-title{
  margin-top: 10px;
  margin-bottom: 6px;
  font-weight: 800;
  color: var(--navy);
  font-size: 1rem;
  white-space: nowrap;        /* reduce line breaks */
  overflow: hidden;
  text-overflow: ellipsis;
}
.cat-list{
  list-style:none;
  padding-left:0;
  margin:0;
}
.cat-list li{ margin: 6px 0; }
.cat-list a{
  color: #123a7a;
  text-decoration:none;
  font-size: .95rem;
  font-weight: 600;
}
.cat-list a:hover{ text-decoration: underline; }

.site-footer{
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
}