:root{
  --brand:#132636;
  --accent:#f08c2b;
  --ink:#0b1b26;
  --muted:#6c7a86;
  --card:#ffffff;
  --bg:#f6f8fb;
  --ring:#dfe6ee;
}

*{box-sizing:border-box}
html,body{
  margin:0;padding:0;
  font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink); background:var(--bg);
}
[hidden]{display:none!important}

/* Header */
.site-header{
  background:linear-gradient(90deg,var(--brand),#1b3a53);
  color:#fff; padding:16px 18px; border-bottom:4px solid var(--accent);
}
.brand{display:flex;align-items:center;gap:16px;max-width:1200px;margin:0 auto;width:100%}
.logo{height:40px;width:auto}
.logo-link{display:inline-flex}
.brand-text{flex:1}
.brand-text h1{margin:0;font-weight:800;letter-spacing:.3px;font-size:1.35rem}
.subtitle{margin:2px 0 0;color:#cfe0ef;font-size:.95rem}

/* Language toggle */
.lang-toggle{display:flex;gap:8px}
.lang-toggle .btn{
  border:1.5px solid var(--ring); background:#fff; color:#var(--brand);
  font-weight:800; border-radius:999px; padding:8px 14px; cursor:pointer
}
.lang-toggle .btn{ color:var(--brand); }
.lang-toggle .btn.active{ background:var(--accent); color:#fff; border-color:transparent }

/* Layout */
.container{
  display:grid;grid-template-columns:1fr 1fr;gap:18px;max-width:1200px;margin:18px auto;padding:0 16px;
}
.card{
  background:var(--card); border:1px solid var(--ring); border-radius:14px; padding:18px 18px 16px;
  box-shadow:0 6px 20px rgba(18,32,50,.06);
}
.card h2{margin:0 0 10px;font-size:1.25rem}

/* Equal column heights */
.container > .card{align-self:stretch}

/* Inputs */
.inputs .row{margin:12px 0}
.badge{margin-left:10px; padding:2px 8px; border-radius:12px; background:#eef3f8; color:#345; font-size:.8rem}
#sqft{width:100%}

/* Quality pills */
.quality-grid{
  display:grid; grid-template-columns:repeat(3,minmax(120px,1fr)); gap:10px; margin-top:6px;
}
.pill{
  display:flex;align-items:center;gap:8px;
  border:1.5px solid var(--ring); padding:10px 12px; border-radius:12px; cursor:pointer;
  background:#fff; font-weight:600;
}
.pill input{transform:scale(1.15)}
.pill:hover{border-color:#c9d6e4}

/* Options grid */
.flex{
  display:grid; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); gap:8px; margin-top:6px
}
.flex label{
  display:flex; align-items:flex-start; gap:8px;
  line-height:1.35; margin:0; text-align:left;
}
.flex abbr[title]{ text-decoration:none; border:0; }

/* Buttons */
.actions{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.btn{
  appearance:none;border:1.5px solid var(--ring);background:#fff;border-radius:12px;padding:10px 14px;
  cursor:pointer;font-weight:700;color:var(--brand); text-decoration:none; display:inline-flex; align-items:center; justify-content:center;
}
.btn.primary{background:var(--brand);color:#fff;border-color:transparent}
.btn.primary:hover{filter:brightness(1.05)}
.btn:hover{border-color:#cad6e3}
.btn.cta{background:var(--accent);color:#fff;border-color:transparent}
.btn.cta:hover{filter:brightness(1.06)}
.btn.whatsapp{background:#25D366;color:#fff;border-color:transparent}
.btn.whatsapp:hover{filter:brightness(1.06)}

/* KPIs */
.kpi{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px dashed #e5edf5}
.kpi:last-of-type{border-bottom:none}
.small{color:var(--muted);font-size:.9rem}

/* Collapsible info panel */
details.info {
  margin: 10px 0 6px;
  padding: 8px 10px;
  border: 1px solid var(--ring);
  border-radius: 10px;
  background: #fff;
}
details.info > summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
details.info > summary::-webkit-details-marker { display: none; }
details.info[open] { box-shadow: 0 4px 14px rgba(18,32,50,.06); }

#info-panel { margin-top: 8px; line-height: 1.45; }
.info-cat { margin: 8px 0 4px; font-weight: 700; color: var(--brand); }
.info-list { margin: 0 0 8px 18px; padding: 0; }
.info-list li { margin: 2px 0; }
.info-chip { font-size: .8rem; color: #fff; background: var(--brand); padding: 2px 6px; border-radius: 8px; margin-left: 6px; }

/* Footer */
.site-footer{
  max-width:1200px;margin:18px auto 36px; padding:0 16px; color:var(--muted); font-size:.9rem;
}

/* Mobile */
@media (max-width: 900px){
  .container{grid-template-columns:1fr}
  .brand-text h1{font-size:1.1rem}
  .logo{height:36px}
  .quality-grid{grid-template-columns:1fr; gap:8px}
  .pill{padding:12px 14px}
}

/* Slider styling + fill */
.slider-row { margin-top: 10px; }
input[type="range"]{
  -webkit-appearance:none; width:100%; height:10px; border-radius:8px;
  background: linear-gradient(to right, var(--accent) var(--fill,50%), #e6e6e6 0);
}
input[type="range"]::-webkit-slider-thumb{
  -webkit-appearance:none; width:28px; height:28px; border-radius:50%;
  background: var(--accent); border:2px solid #fff; box-shadow: 0 1px 2px rgba(0,0,0,.2);
}

/* Numeric input + step buttons */
.range-value{ display:flex; gap:8px; align-items:center; margin-top:10px; }
.input--sqft{ height:48px; line-height:48px; font-weight:700; text-align:center; min-width:120px; }
.btn-step{
  width:48px; height:48px; border-radius:10px; font-size:18px; font-weight:800;
  border:1.5px solid var(--ring); background:#fff; color:var(--brand);
}

/* Quick chips */
.chips{ display:flex; flex-wrap:wrap; gap:8px; margin-top:10px; }
.chip{
  padding:10px 14px; border-radius:999px; border:1px solid var(--ring); background:#fff; font-weight:700; color:var(--brand);
}
.chip.active{ background: var(--accent); color:#fff; border-color: var(--accent); }

/* Sticky CTA (mobile) */
.sticky-cta{
  position: fixed; left:0; right:0; bottom:0; z-index:50;
  padding: 12px calc(16px + env(safe-area-inset-right)) calc(12px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));
  background: linear-gradient(to top, rgba(255,255,255,.98), rgba(255,255,255,.92));
  backdrop-filter: blur(3px);
}
.sticky-cta .btn-primary{
  width:100%; height:56px; border-radius:14px; font-weight:800; font-size:16px;
  background: var(--accent); color:#fff; border:none; display:inline-flex; align-items:center; justify-content:center; text-decoration:none;
}

/* Desktop layout upgrades */
@media (min-width: 1024px){
  #stickyCta{ display:none; }
  .quality-grid{ grid-template-columns: repeat(3, minmax(120px,1fr)); }
  .chips{ flex-wrap: nowrap; }
}

/* Quality desc */
.quality-desc{
  margin-top: 10px;
  background: #ffffff;
  border: 1px solid var(--ring);
  border-radius: 12px;
  padding: 14px;
  box-shadow: 0 4px 14px rgba(18,32,50,.06);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .18s ease, transform .18s ease;
}
.quality-desc.show{ opacity: 1; transform: translateY(0); }
.quality-desc .q-title{
  display:flex; align-items:center; gap:8px;
  font-weight:800; color: var(--brand);
  margin: 0 0 8px 0;
}
.quality-desc .q-badge{
  display:inline-flex; align-items:center; gap:6px;
  font-size:.8rem; color:#fff; background: var(--brand);
  border-radius: 999px; padding: 3px 8px;
}
.quality-desc p{ margin: 6px 0 8px; color: var(--ink); line-height:1.45; }
.quality-desc .q-grid{ display:grid; grid-template-columns: 1fr; gap:6px; margin:8px 0 0; }
.quality-desc .q-item{ display:flex; gap:8px; align-items:flex-start; font-size:.95rem; color: var(--ink); }
.quality-desc .q-dot{ width:8px; height:8px; border-radius:50%; margin-top:.45rem; background: var(--accent); }
@media (min-width: 1024px){
  .quality-desc .q-grid{ grid-template-columns: 1fr 1fr; }
}

/* Mobile header: full-bleed background */
@media (max-width: 900px){
  .site-header{
    width: 100vw;
    margin-left: calc(50% - 50vw);
    margin-right: calc(50% - 50vw);
    padding-left: 16px;
    padding-right: 16px;
  }
  .brand{ max-width: 1200px; margin: 0 auto; justify-content: flex-start; text-align: left; padding: 0; }
  .brand-text{ text-align: left; }
}

/* RTL helpers */
html[dir="rtl"] body{ direction: rtl; }
html[dir="rtl"] .flex label{ text-align:right; }
html[dir="rtl"] .chips{ direction: rtl; }
html[dir="rtl"] .info-list{ margin:0 18px 8px 0; }