/* River Modern — quietly premium. Palette sampled from GuocoLand e-brochure. All pairs WCAG AA >= 4.5 */
:root{
  --bg:#FAF8F6;          /* warm off-white (brochure base) */
  --band:#F1ECE3;        /* light band */
  --ink:#0A1C2B;         /* brochure navy */
  --muted:#4A5B6A;       /* secondary text, 6.6:1 on bg */
  --accent:#7A5C3E;      /* bronze, 6.1:1 with white */
  --accent-dark:#6E5237;
  --accent-soft:#B99D7B; /* bronze on dark, 6.7:1 */
  --dark:#0A1C2B;
  --dark-text:#D8CBB6;
  --wa:#0F7C41;          /* darkened WhatsApp green, 5.3:1 with white */
  --line:#DDD4C6;
  --serif:'Marcellus',Georgia,serif;
  --sans:'Jost','Helvetica Neue',Arial,sans-serif;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--bg);line-height:1.65;font-size:17px}
img{max-width:100%;display:block}
a{color:var(--accent-dark)}
h1,h2,h3,.serif{font-family:var(--serif);font-weight:400;letter-spacing:.04em}
h2{font-size:clamp(1.7rem,3.4vw,2.5rem);line-height:1.25;margin-bottom:.6rem}
h3{font-size:1.25rem}
.eyebrow{font-size:.78rem;letter-spacing:.28em;text-transform:uppercase;color:var(--accent-dark);margin-bottom:.9rem}
.dark .eyebrow{color:var(--accent-soft)}
.wrap{max-width:1180px;margin:0 auto;padding:0 22px}
section{padding:84px 0}
.band{background:var(--band)}
.dark{background:var(--dark);color:#FAF8F6}
.dark h2{color:#FFFFFF}
.lead{max-width:760px;color:var(--muted);font-size:1.05rem}
.dark .lead{color:var(--dark-text)}
.center{text-align:center}
.center .lead{margin:0 auto}

/* Buttons */
.btn{display:inline-block;padding:15px 34px;font-family:var(--sans);font-size:.92rem;letter-spacing:.16em;text-transform:uppercase;text-decoration:none;border:1px solid transparent;cursor:pointer;transition:.25s;text-align:center}
.btn-solid{background:var(--accent);color:#FFFFFF}
.btn-solid:hover{background:var(--accent-dark)}
.btn-wa{background:var(--wa);color:#FFFFFF}
.btn-wa:hover{background:#0C6435}
.btn-ghost{background:transparent;color:#FFFFFF;border-color:#FFFFFF}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-outline{background:transparent;color:var(--accent-dark);border-color:var(--accent)}
.btn-outline:hover{background:var(--accent);color:#FFFFFF}

/* Nav */
header{position:fixed;inset:0 0 auto 0;z-index:60;background:rgba(10,28,43,.92);backdrop-filter:blur(8px)}
.nav{display:flex;align-items:center;justify-content:space-between;height:66px;max-width:1280px;margin:0 auto;padding:0 22px}
.brand{font-family:var(--serif);color:#FFFFFF;text-decoration:none;font-size:1.05rem;letter-spacing:.3em;text-transform:uppercase;white-space:nowrap}
.brand span{display:block;font-family:var(--sans);font-size:.56rem;letter-spacing:.42em;color:var(--accent-soft)}
.nav-links{display:flex;gap:26px;align-items:center;list-style:none}
.nav-links a{color:#F2EDE4;text-decoration:none;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase}
.nav-links a:hover{color:var(--accent-soft)}
.nav-cta{background:var(--accent);color:#FFFFFF !important;padding:10px 20px}
.nav-cta:hover{background:var(--accent-dark)}
@media(max-width:1020px){.nav-links li{display:none}.nav-links li.keep{display:block}}

/* Hero */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;justify-content:center;text-align:center;color:#FFFFFF;isolation:isolate}
.hero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,28,43,.55),rgba(10,28,43,.25) 45%,rgba(10,28,43,.72));z-index:-1}
.hero-inner{padding:120px 22px 90px;max-width:900px}
.hero .mark{font-family:var(--serif);font-size:clamp(2.4rem,6vw,4.6rem);letter-spacing:.22em;text-transform:uppercase;line-height:1.1}
.hero .rule{width:1px;height:64px;background:var(--accent-soft);margin:26px auto}
.hero .tagline{font-size:clamp(.95rem,2vw,1.2rem);letter-spacing:.3em;text-transform:uppercase;color:#F2EDE4}
.hero .sub{margin-top:14px;font-size:.95rem;letter-spacing:.1em;color:#E4DCCE}
.hero .btns{margin-top:38px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero .note{position:absolute;right:14px;bottom:10px;font-size:.6rem;letter-spacing:.12em;color:rgba(255,255,255,.75)}

/* Stats bar */
.stats{background:var(--dark);color:#FAF8F6;padding:34px 0}
.stats .wrap{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;text-align:center}
.stat b{display:block;font-family:var(--serif);font-weight:400;font-size:1.55rem;color:#FFFFFF}
.stat span{font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--dark-text)}
@media(max-width:860px){.stats .wrap{grid-template-columns:repeat(2,1fr)}.stats .wrap .stat:last-child{grid-column:1/-1}}

/* Split sections */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media(max-width:860px){.split{grid-template-columns:1fr}}
.split img{box-shadow:0 18px 46px rgba(10,28,43,.18)}
.imgnote{font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-top:8px}
.dark .imgnote{color:var(--dark-text)}

/* Ticks */
.ticks{list-style:none;margin:20px 0}
.ticks li{padding:7px 0 7px 32px;position:relative;color:var(--ink)}
.ticks li::before{content:"✓";position:absolute;left:0;color:var(--accent-dark);font-weight:600}
.dark .ticks li{color:#F2EDE4}
.dark .ticks li::before{color:var(--accent-soft)}

/* Cards */
.cards{display:grid;grid-template-columns:1fr 1fr;gap:34px;margin-top:44px}
@media(max-width:860px){.cards{grid-template-columns:1fr}}
.card{background:#FFFFFF;box-shadow:0 14px 38px rgba(10,28,43,.1)}
.card img{aspect-ratio:3/2;object-fit:cover;width:100%}
.card .pad{padding:28px 30px 32px}
.card .tag{font-size:.72rem;letter-spacing:.22em;text-transform:uppercase;color:var(--accent-dark)}
.card h3{margin:8px 0 10px}
.card p{color:var(--muted);font-size:.97rem}

/* Tables */
.tbl{width:100%;border-collapse:collapse;margin-top:34px;background:#FFFFFF;box-shadow:0 14px 38px rgba(10,28,43,.08)}
.tbl th{background:var(--dark);color:#FFFFFF;font-family:var(--sans);font-weight:500;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;padding:15px 18px;text-align:left}
.tbl td{padding:14px 18px;border-bottom:1px solid var(--line);font-size:.97rem}
.tbl tr:last-child td{border-bottom:none}
.tbl tbody tr:nth-child(even){background:#FBF9F5}
.hedge{font-size:.82rem;color:var(--muted);margin-top:14px;max-width:900px}

/* Fact sheet */
.fact{width:100%;border-collapse:collapse;margin-top:34px;background:#FFFFFF;box-shadow:0 14px 38px rgba(10,28,43,.08)}
.fact th{width:32%;text-align:left;padding:15px 20px;border-bottom:1px solid var(--line);font-family:var(--sans);font-weight:500;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-dark);vertical-align:top}
.fact td{padding:15px 20px;border-bottom:1px solid var(--line);font-size:.96rem}
.fact tr:last-child th,.fact tr:last-child td{border-bottom:none}

/* Gallery */
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
@media(max-width:860px){.grid3{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid3{grid-template-columns:1fr}}
.grid3 img{aspect-ratio:4/3;object-fit:cover;width:100%}

/* FAQ */
.faq{max-width:860px;margin:36px auto 0}
.faq details{background:#FFFFFF;border:1px solid var(--line);margin-bottom:12px}
.faq summary{cursor:pointer;padding:18px 22px;font-family:var(--serif);font-size:1.05rem;list-style:none;position:relative;padding-right:52px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:22px;top:14px;font-size:1.5rem;color:var(--accent-dark)}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 22px 20px;color:var(--muted);font-size:.97rem}

/* Form */
.formbox{max-width:680px;margin:40px auto 0;background:#FFFFFF;padding:42px 40px;box-shadow:0 18px 50px rgba(10,28,43,.14)}
.formbox label{display:block;font-size:.74rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent-dark);margin:18px 0 6px}
.formbox input,.formbox select,.formbox textarea{width:100%;padding:13px 14px;border:1px solid var(--line);background:#FBF9F5;font-family:var(--sans);font-size:.98rem;color:var(--ink)}
.formbox input:focus,.formbox select:focus,.formbox textarea:focus{outline:2px solid var(--accent);outline-offset:-1px}
.consent{display:flex;gap:10px;align-items:flex-start;margin:22px 0;font-size:.82rem;color:var(--muted)}
.consent input{width:auto;margin-top:4px}
.formbox .btn{width:100%;margin-top:6px}
.smallprint{font-size:.76rem;color:var(--muted);text-align:center;margin-top:14px}

/* Floor plan page */
.filters{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin:34px 0 8px}
.filters button{padding:11px 22px;border:1px solid var(--accent);background:transparent;color:var(--accent-dark);font-family:var(--sans);font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;cursor:pointer;transition:.2s}
.filters button.active,.filters button:hover{background:var(--accent);color:#FFFFFF}
.fpgrid{display:grid;grid-template-columns:repeat(2,1fr);gap:30px;margin-top:34px}
@media(max-width:860px){.fpgrid{grid-template-columns:1fr}}
.fpcard{background:#FFFFFF;box-shadow:0 14px 38px rgba(10,28,43,.1)}
.fpcard img{cursor:zoom-in;border-bottom:1px solid var(--line);background:#FFFFFF}
.fpcard .pad{padding:20px 24px 24px;display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.fpcard .t{font-family:var(--serif);font-size:1.2rem}
.fpcard .m{color:var(--muted);font-size:.9rem}

/* Lightbox */
.lb{position:fixed;inset:0;background:rgba(10,28,43,.94);display:none;align-items:center;justify-content:center;z-index:100;padding:28px;cursor:zoom-out}
.lb.open{display:flex}
.lb img{max-width:100%;max-height:92vh;object-fit:contain;background:#FFFFFF}
.lb .x{position:absolute;top:16px;right:24px;color:#FFFFFF;font-size:2rem;font-family:var(--sans);cursor:pointer;background:none;border:none}

/* Page hero (subpages) */
.phero{position:relative;padding:170px 0 90px;color:#FFFFFF;isolation:isolate;text-align:center}
.phero img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:-2}
.phero::after{content:"";position:absolute;inset:0;background:rgba(10,28,43,.66);z-index:-1}
.phero h1{font-size:clamp(2rem,4.6vw,3.2rem);letter-spacing:.12em;text-transform:uppercase}
.phero p{color:#E4DCCE;max-width:700px;margin:14px auto 0}

/* CTA band */
.ctaband{text-align:center}
.ctaband .btns{margin-top:30px;display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
footer{background:var(--dark);color:var(--dark-text);padding:60px 0 110px;font-size:.8rem;line-height:1.7}
footer .contact{color:#FFFFFF;font-size:.95rem;letter-spacing:.06em;margin-bottom:22px}
footer p{margin-bottom:14px;color:#B9C2CB}
footer a{color:var(--accent-soft)}
@media(min-width:861px){footer{padding-bottom:60px}}

/* Sticky mobile bar */
.mbar{display:none;position:fixed;bottom:0;left:0;right:0;z-index:70}
@media(max-width:860px){.mbar{display:grid;grid-template-columns:1fr 1fr}}
.mbar a{padding:16px 10px;text-align:center;font-size:.82rem;letter-spacing:.18em;text-transform:uppercase;text-decoration:none;color:#FFFFFF}
.mbar .r{background:var(--accent)}
.mbar .w{background:var(--wa)}

.mapwrap{margin-top:40px;box-shadow:0 18px 50px rgba(10,28,43,.14)}
.zone-list{font-size:.9rem;color:var(--muted);letter-spacing:.04em}