/* ============================================================================
   GRADA design system
   Brand: confident, curated tech. Ink + emerald.
   ========================================================================== */
:root{
  --ink:#0e1a2b;        /* headings, brand dark            */
  --ink-soft:#26374b;   /* body text                       */
  --muted:#5a6b7e;      /* secondary text                  */
  --faint:#64748b;      /* meta / captions (AA on white)   */
  --line:#e6ebf1;       /* borders                         */
  --line-soft:#eef2f7;
  --bg:#f5f8fb;         /* page background                 */
  --bg-2:#eaeff5;
  --card:#ffffff;

  --accent:#0b6e57;     /* deep emerald, elevated          */
  --accent-strong:#0a5c49;
  --accent-deep:#053a2c;
  --accent-soft:#e7f1ec;
  --gold:#e8a33d;

  --grade-a:#0ea373; --grade-a-bg:#e4f6ee;
  --grade-b:#2f6fed; --grade-b-bg:#e8effe;
  --grade-c:#9c5c14; --grade-c-bg:#fbeede;

  --ok:#0ea373; --warn:#d98324; --danger:#d5473f;

  --radius:16px; --radius-sm:11px; --radius-lg:24px; --radius-pill:999px;
  --shadow-xs:0 1px 2px rgba(15,23,42,.06);
  --shadow-sm:0 2px 6px -2px rgba(15,23,42,.10),0 1px 2px rgba(15,23,42,.06);
  --shadow:0 12px 30px -14px rgba(15,23,42,.28);
  --shadow-lg:0 30px 60px -24px rgba(15,23,42,.40);
  --maxw:1180px;
  --font:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root{
    --ink:#f2f6fb; --ink-soft:#d3dce6; --muted:#9fb0c2; --faint:#7d8ea1;
    --line:#22303f; --line-soft:#1b2836; --bg:#0b131d; --bg-2:#0f1a26; --card:#111d2b;
    --accent:#22c58c; --accent-strong:#38d29b; --accent-soft:#123026; --accent-deep:#8bf0cb;
    --grade-a:#22c58c; --grade-b:#5f93f5; --grade-c:#e6a24a;
    --grade-a-bg:#123026; --grade-b-bg:#12233f; --grade-c-bg:#33260f;
    --shadow:0 18px 40px -18px rgba(0,0,0,.6); --shadow-lg:0 40px 80px -30px rgba(0,0,0,.7);
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;font-family:var(--font);color:var(--ink-soft);background:var(--bg);
  line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{color:var(--ink);line-height:1.15;margin:0 0 .5em;letter-spacing:-.02em;font-weight:700}
h1{font-size:clamp(1.9rem,4.5vw,3rem)}
h2{font-size:clamp(1.4rem,3vw,2rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
.small{font-size:.85rem}
.center{text-align:center}
section{padding:clamp(52px,8vw,100px) 0}

/* ---- buttons --------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:.5em;justify-content:center;
  font:inherit;font-weight:600;font-size:.95rem;cursor:pointer;border:1px solid transparent;
  padding:.72em 1.25em;border-radius:var(--radius-pill);transition:.16s ease;white-space:nowrap;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#1b2c40}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 18px -8px rgba(11,110,87,.55)}
.btn-accent:hover{background:var(--accent-strong)}
.btn-wa{background:#25d366;color:#06331b}
.btn-wa:hover{background:#1fbe5b}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--ink)}
.btn-ghost:hover{border-color:var(--muted);background:var(--card)}
.btn-block{width:100%}
.btn-lg{padding:.9em 1.6em;font-size:1.02rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* ---- header ---------------------------------------------------------------- */
.site-header{
  position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);
  backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line);
}
.site-header .container{display:flex;align-items:center;gap:20px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);font-size:1.28rem;letter-spacing:-.03em}
.brand .logo{width:34px;height:34px;flex:0 0 auto}
.nav{display:flex;gap:6px;margin-left:8px}
.nav a{padding:.5em .8em;border-radius:10px;color:var(--muted);font-weight:600;font-size:.94rem}
.nav a:hover,.nav a.active{color:var(--ink);background:var(--card)}
.header-cta{margin-left:auto;display:flex;align-items:center;gap:10px}
.header-cta .wa-mini{color:var(--muted);font-weight:600;font-size:.9rem}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;padding:.5em .6em;cursor:pointer;color:var(--ink)}

/* ---- hero ------------------------------------------------------------------ */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1200px 500px at 80% -10%,rgba(14,163,115,.14),transparent 60%),
  radial-gradient(900px 500px at 0% 0%,rgba(47,111,237,.10),transparent 55%);
  border-bottom:1px solid var(--line)}
.hero .container{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;
  padding-top:clamp(48px,8vw,96px);padding-bottom:clamp(48px,8vw,96px)}
.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;color:var(--accent-strong);
  background:var(--accent-soft);padding:.4em .8em;border-radius:var(--radius-pill);font-size:.82rem;letter-spacing:.01em;margin-bottom:18px}
.hero h1{margin-bottom:.4em;font-size:clamp(2.1rem,5vw,3.5rem);letter-spacing:-.03em}
.hero-lede{font-size:1.16rem;line-height:1.6;color:var(--muted);max-width:42ch;margin-bottom:28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
.hero-assure{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:.9rem;font-weight:600}
.hero-assure span{display:inline-flex;align-items:center;gap:7px}
.hero-assure svg{color:var(--accent)}
.hero-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);padding:16px;transition:.3s cubic-bezier(.2,.7,.2,1)}
.hero-card:hover{transform:translateY(-5px)}
.hero-card .hc-img{position:relative;border-radius:15px;aspect-ratio:4/3;overflow:hidden;background:var(--bg-2)}
.hero-card .hc-body{padding:16px 8px 6px;display:flex;flex-direction:column;gap:6px}
.hero-card .hc-top{display:flex;justify-content:space-between;align-items:center;gap:10px}
.hero-card .hc-title{color:var(--ink);font-size:1.15rem;letter-spacing:-.01em}
.hero-card .hc-price{font-weight:800;color:var(--ink);font-size:1.5rem;font-variant-numeric:tabular-nums;margin-top:2px}

/* ---- trust strip ----------------------------------------------------------- */
.trust{background:var(--card);border-bottom:1px solid var(--line)}
.trust .container{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding-top:22px;padding-bottom:22px}
.trust-item{display:flex;gap:12px;align-items:flex-start;padding:8px 14px}
.trust-item .ti-ic{flex:0 0 auto;width:40px;height:40px;border-radius:11px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent-strong)}
.trust-item b{color:var(--ink);display:block;font-size:.96rem}
.trust-item span{color:var(--muted);font-size:.85rem}

/* ---- filter bar ------------------------------------------------------------ */
.toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin-bottom:34px;padding-bottom:20px;border-bottom:1px solid var(--line)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{border:1px solid var(--line);background:var(--card);color:var(--muted);font-weight:600;
  padding:.5em .95em;border-radius:var(--radius-pill);cursor:pointer;font-size:.9rem;transition:.14s}
.chip:hover{border-color:var(--muted);color:var(--ink)}
.chip.active{background:var(--ink);color:#fff;border-color:var(--ink)}
.search{position:relative;margin-left:auto;flex:1;min-width:180px;max-width:320px}
.search input,.select{width:100%;font:inherit;font-size:.92rem;padding:.66em .9em .66em 2.3em;border:1px solid var(--line);
  border-radius:12px;background:var(--card);color:var(--ink)}
.search svg{position:absolute;left:.75em;top:50%;transform:translateY(-50%);color:var(--faint)}
.select{padding-left:.9em;max-width:190px;cursor:pointer}
.result-meta{color:var(--faint);font-size:.82rem;font-weight:600;letter-spacing:.02em;white-space:nowrap}

/* ---- product grid + cards -------------------------------------------------- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:30px}
.card{background:var(--card);border:1px solid var(--line);border-radius:20px;overflow:hidden;
  transition:.28s cubic-bezier(.2,.7,.2,1);display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--accent) 32%,var(--line))}
.card .thumb{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--bg-2)}
.card .thumb img,.card .thumb .ph{width:100%;height:100%;object-fit:cover;transition:.5s cubic-bezier(.2,.7,.2,1)}
.card:hover .thumb img,.card:hover .thumb .ph{transform:scale(1.05)}
.card .thumb-badge{position:absolute;top:12px;left:12px}
.ph{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  background:linear-gradient(160deg,var(--bg-2),color-mix(in srgb,var(--ink) 5%,var(--bg-2)));
  color:color-mix(in srgb,var(--ink) 32%,transparent)}
.ph svg{opacity:.42}
.ph-tag{font-size:.66rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;opacity:.5}
.card .cbody{padding:20px 22px 22px;display:flex;flex-direction:column;gap:5px;flex:1}
.card .cmeta{color:var(--faint);font-size:.72rem;text-transform:uppercase;letter-spacing:.09em;font-weight:700}
.card .ctitle{font-weight:700;color:var(--ink);font-size:1.18rem;line-height:1.28;margin:.1em 0 0;letter-spacing:-.01em}
.card .cprice-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:14px}
.card .price{font-weight:800;color:var(--ink);font-size:1.35rem;font-variant-numeric:tabular-nums}

/* ---- badges ---------------------------------------------------------------- */
.badge{display:inline-flex;align-items:center;gap:5px;font-weight:700;font-size:.74rem;
  padding:.3em .6em;border-radius:8px;letter-spacing:.01em;line-height:1}
.status{backdrop-filter:blur(4px)}
.status-available{background:rgba(14,163,115,.92);color:#fff}
.status-reserved{background:#a05913;color:#fff}
.status-sold{background:rgba(90,107,126,.94);color:#fff}
.is-sold .thumb img,.is-sold .thumb .ph{filter:grayscale(.7) opacity(.7)}

/* ---- listing detail -------------------------------------------------------- */
.detail{padding-top:28px}
.crumbs{color:var(--faint);font-size:.86rem;margin-bottom:18px;display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.crumbs a:hover{color:var(--ink)}
.detail-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:38px;align-items:start}
.gallery .main{position:relative;aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;background:var(--bg-2);border:1px solid var(--line)}
.gallery .main img{width:100%;height:100%;object-fit:cover}
.gallery .thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.gallery .thumbs button{width:74px;height:60px;border-radius:10px;overflow:hidden;border:2px solid transparent;padding:0;cursor:pointer;background:var(--bg-2)}
.gallery .thumbs button.active{border-color:var(--accent)}
.gallery .thumbs img{width:100%;height:100%;object-fit:cover}
.buybox{position:sticky;top:86px}
.buybox h1{font-size:clamp(1.5rem,3vw,2rem);margin-bottom:.25em}
.buybox .subtitle{color:var(--muted);margin-bottom:16px}
.price-row{display:flex;align-items:baseline;gap:12px;margin:8px 0 6px}
.price-row .p{font-size:2.1rem;font-weight:800;color:var(--ink)}
.badge-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 18px}
.badge-lg{font-size:.82rem;padding:.45em .75em}
.cta-stack{display:flex;flex-direction:column;gap:10px;margin:18px 0}
.assure-list{list-style:none;padding:0;margin:16px 0 0;display:grid;gap:9px}
.assure-list li{display:flex;gap:9px;color:var(--ink-soft);font-size:.92rem}
.assure-list svg{color:var(--accent);flex:0 0 auto;margin-top:2px}
.spec-table{width:100%;border-collapse:collapse;margin:8px 0 0;font-size:.92rem}
.spec-table td{padding:.6em .2em;border-bottom:1px solid var(--line-soft);vertical-align:top}
.spec-table td:first-child{color:var(--faint);width:42%;font-weight:600;text-transform:capitalize}
.spec-table td:last-child{color:var(--ink-soft)}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px;margin-top:22px}
.panel h3{margin-bottom:.6em}
.prose{color:var(--ink-soft)}
.prose p{margin-bottom:.8em}
.prose h3{margin:1.5em 0 .4em;font-size:1.05rem}
.prose h3:first-child{margin-top:0}
.prose a{color:var(--accent-strong);text-decoration:underline}
.prose a:hover{color:var(--accent-deep)}
.prose strong{color:var(--ink)}
.legal-draft{background:color-mix(in srgb,var(--gold) 15%,var(--card));border:1px solid color-mix(in srgb,var(--gold) 45%,transparent);color:var(--ink);border-radius:10px;padding:12px 15px;font-size:.9rem;line-height:1.5;margin:0 0 22px}
.legal-draft code{background:color-mix(in srgb,var(--ink) 9%,transparent);padding:.08em .35em;border-radius:4px;font-size:.86em}
mark.todo{background:color-mix(in srgb,var(--gold) 30%,transparent);color:var(--ink);padding:.05em .35em;border-radius:4px;font-weight:600}
.gradekey{display:flex;gap:14px;flex-wrap:wrap;margin-top:6px}
.gradekey .gk{flex:1;min-width:160px;border:1px solid var(--line);border-radius:12px;padding:12px 14px}
.gradekey .gk b{color:var(--ink)}

/* ---- enquiry form ---------------------------------------------------------- */
.form-row{display:grid;gap:6px;margin-bottom:12px}
.form-row label{font-weight:600;color:var(--ink);font-size:.88rem}
.form-row input,.form-row textarea{font:inherit;font-size:.95rem;padding:.7em .85em;border:1px solid var(--line);
  border-radius:11px;background:var(--card);color:var(--ink);width:100%}
.form-row input:focus,.form-row textarea:focus,.search input:focus{outline:2px solid color-mix(in srgb,var(--accent) 45%,transparent);outline-offset:1px;border-color:var(--accent)}
.form-note{font-size:.8rem;color:var(--faint)}
.form-ok{background:var(--accent-soft);color:var(--accent-deep);border:1px solid color-mix(in srgb,var(--accent) 30%,transparent);
  padding:14px 16px;border-radius:12px;font-weight:600}

/* ---- sections & footer ----------------------------------------------------- */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.6rem,3.2vw,2.3rem);margin-bottom:.15em}
.section-head p{margin:0;color:var(--muted)}
.eyebrow-sm{display:inline-block;color:var(--accent-strong);font-size:.76rem;font-weight:700;text-transform:uppercase;letter-spacing:.14em;margin-bottom:9px}
.link-arrow{color:var(--accent-strong);font-weight:700;font-size:.92rem}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.step .n{width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;margin-bottom:12px}
.step b{color:var(--ink);display:block;margin-bottom:4px}
.step span{color:var(--muted);font-size:.9rem}
.cta-band{background:linear-gradient(135deg,var(--ink),#16283d);color:#fff;border-radius:var(--radius-lg);
  padding:clamp(28px,5vw,52px);text-align:center;box-shadow:var(--shadow-lg)}
.cta-band h2{color:#fff}
.cta-band p{color:#c3d0dd;max-width:52ch;margin:0 auto 22px}
.site-footer{background:var(--card);border-top:1px solid var(--line);margin-top:20px;padding:40px 0 30px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px}
.footer-grid h4{color:var(--ink);font-size:.82rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:12px}
.footer-grid a{display:block;color:var(--muted);padding:4px 0;font-size:.92rem}
.footer-grid a:hover{color:var(--ink)}
.footer-legal{display:flex;flex-wrap:wrap;gap:6px 20px;margin-top:24px}
.footer-legal a{color:var(--muted);font-size:.85rem}
.footer-legal a:hover{color:var(--ink)}
.footer-bottom{border-top:1px solid var(--line);margin-top:22px;padding-top:18px;color:var(--faint);font-size:.82rem;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.footer-bottom a{color:var(--muted);text-decoration:underline}
.footer-bottom a:hover{color:var(--ink)}

.empty{text-align:center;padding:60px 20px;color:var(--muted)}
.empty svg{color:var(--faint);margin-bottom:12px}

/* ---- config banner + lower-detail layout ----------------------------------- */
.config-banner{background:#fdecc4;color:#7c4a03;text-align:center;padding:.55em 1em;font-size:.85rem;font-weight:600;border-bottom:1px solid #f0d089}
.config-banner code{background:rgba(0,0,0,.08);padding:.05em .35em;border-radius:5px}
.detail-lower{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:start;margin-top:24px}

/* ---- responsive ------------------------------------------------------------ */
@media (max-width:900px){
  .hero .container,.detail-grid,.detail-lower{grid-template-columns:1fr}
  .hero-card{display:none}
  .trust .container{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .buybox{position:static}
}
@media (max-width:640px){
  .nav{display:none}
  .nav-toggle{display:inline-flex}
  .nav.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;background:var(--card);
    border-bottom:1px solid var(--line);padding:10px 16px;gap:2px}
  .trust .container{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .header-cta .wa-mini{display:none}
}