/* ============================================
   LUMIÈRE RIVERSIDE — Luxury Real Estate Landing
   ============================================ */

:root{
  --bg: #0b120e;
  --bg-alt: #101913;
  --panel: #142019;
  --ivory: #f4efe6;
  --stone: #c9c2b4;
  --stone-dim: #8f8a7d;
  --gold: #b7924b;
  --gold-light: #ddbb7a;
  --line: rgba(183,146,75,.35);
  --green-deep: #16211a;

  --serif: "Playfair Display", "Times New Roman", serif;
  --sans: "Be Vietnam Pro", "Segoe UI", sans-serif;

  --container: 1240px;
  --ease: cubic-bezier(.22,1,.36,1);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }

body{
  background:var(--bg);
  color:var(--ivory);
  font-family:var(--sans);
  font-weight:300;
  line-height:1.6;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
button{ font-family:inherit; cursor:pointer; background:none; border:none; color:inherit; }
input, select{ font-family:inherit; }

::selection{ background:var(--gold); color:#0b120e; }

/* subtle film grain overlay for texture */
.grain{
  position:fixed; inset:0; z-index:9000; pointer-events:none;
  opacity:.035; mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='120' height='120'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

.eyebrow{
  font-family:var(--sans);
  font-size:.75rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--gold-light);
  font-weight:500;
  margin-bottom:1.1rem;
}

.section-title{
  font-family:var(--serif);
  font-weight:600;
  font-size:clamp(1.9rem, 3.4vw, 3rem);
  line-height:1.15;
  color:var(--ivory);
}

.line-draw{ position:relative; display:inline-block; }
.line-draw::after{
  content:"";
  position:absolute; left:0; bottom:-14px;
  width:64px; height:2px;
  background:var(--gold);
  transform:scaleX(0); transform-origin:left;
  transition:transform 1s var(--ease) .15s;
}
.reveal.in-view .line-draw::after{ transform:scaleX(1); }

.section-head{ max-width:var(--container); margin:0 auto 3.5rem; padding:0 6vw; }

/* reveal-on-scroll base */
.reveal{ opacity:0; transform:translateY(28px); transition:opacity .9s var(--ease), transform .9s var(--ease); }
.reveal.in-view{ opacity:1; transform:none; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:.95rem 2.1rem;
  font-size:.85rem; letter-spacing:.06em;
  border-radius:2px;
  transition:all .35s var(--ease);
  white-space:nowrap;
}
.btn--gold{ background:var(--gold); color:#181008; font-weight:600; }
.btn--gold:hover{ background:var(--gold-light); transform:translateY(-2px); }
.btn--line{ border:1px solid rgba(244,239,230,.35); color:var(--ivory); }
.btn--line:hover{ border-color:var(--gold); color:var(--gold-light); }
.btn--ghost{ border:1px solid var(--line); color:var(--ivory); padding:.6rem 1.4rem; font-size:.78rem; }
.btn--ghost:hover{ background:var(--gold); color:#181008; border-color:var(--gold); }
.btn--gold-sm{ background:transparent; border:1px solid var(--gold); color:var(--gold-light); padding:.75rem 1.6rem; font-size:.78rem; letter-spacing:.05em; }
.btn--gold-sm:hover{ background:var(--gold); color:#181008; }

/* ============================================
   NAV
   ============================================ */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:1000;
  padding:1.4rem 0;
  transition:padding .4s var(--ease), background .4s var(--ease), border-color .4s var(--ease);
  border-bottom:1px solid transparent;
}
.nav.is-scrolled{
  padding:.85rem 0;
  background:rgba(11,18,14,.86);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav__inner{
  max-width:var(--container); margin:0 auto; padding:0 6vw;
  display:flex; align-items:center; justify-content:space-between; gap:2rem;
}
.nav__logo{
  font-family:var(--serif); font-size:1.35rem; letter-spacing:.14em; font-weight:600; color:var(--ivory);
}
.nav__logo span{ color:var(--gold); font-style:italic; }
.nav__links{ display:flex; gap:2.1rem; flex:1; justify-content:center; }
.nav__links a{
  font-size:.82rem; letter-spacing:.03em; color:var(--stone);
  position:relative; padding:.3rem 0; transition:color .3s;
}
.nav__links a::after{
  content:""; position:absolute; left:0; bottom:0; width:0; height:1px; background:var(--gold);
  transition:width .35s var(--ease);
}
.nav__links a:hover{ color:var(--ivory); }
.nav__links a:hover::after{ width:100%; }
.nav__cta{ flex-shrink:0; }
.nav__burger{ display:none; flex-direction:column; gap:5px; width:26px; }
.nav__burger span{ height:1px; background:var(--ivory); width:100%; transition:.3s; }

@media (max-width: 900px){
  .nav__links{
    position:fixed; inset:0 0 0 auto; width:78%; max-width:340px;
    background:var(--bg-alt); flex-direction:column; justify-content:center; gap:1.8rem;
    padding:2rem; transform:translateX(100%); transition:transform .5s var(--ease);
    border-left:1px solid var(--line);
  }
  .nav__links.is-open{ transform:translateX(0); }
  .nav__cta{ display:none; }
  .nav__burger{ display:flex; z-index:1100; }
  .nav__burger.is-open span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
  .nav__burger.is-open span:nth-child(2){ opacity:0; }
  .nav__burger.is-open span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }
}

/* ============================================
   HERO
   ============================================ */
.hero{
  position:relative; min-height:100vh; display:flex; align-items:center;
  overflow:hidden;
}
.hero__media{ position:absolute; inset:0; z-index:0; }
.hero__media img{ width:100%; height:100%; object-fit:cover; transform:scale(1.06); }
.hero__overlay{
  position:absolute; inset:0;
  background:
    linear-gradient(180deg, rgba(11,18,14,.55) 0%, rgba(11,18,14,.35) 40%, rgba(11,18,14,.92) 100%),
    linear-gradient(90deg, rgba(11,18,14,.75) 0%, rgba(11,18,14,.15) 55%);
}
.hero__grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(244,239,230,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(244,239,230,.05) 1px, transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg, black, transparent 75%);
}
.hero__content{
  position:relative; z-index:1;
  max-width:var(--container); margin:0 auto; padding:0 6vw;
  width:100%;
}
.hero__title{
  font-family:var(--serif); font-weight:600; font-style:normal;
  font-size:clamp(2.6rem, 7vw, 5.4rem);
  line-height:1.05; color:var(--ivory); max-width:14ch;
  margin-bottom:1.6rem;
}
.hero__sub{
  max-width:44ch; color:var(--stone); font-size:1.02rem; font-weight:300;
  margin-bottom:2.4rem;
}
.hero__actions{ display:flex; gap:1rem; flex-wrap:wrap; }
.hero__scroll{
  position:absolute; bottom:2.4rem; left:50%; transform:translateX(-50%);
  display:flex; flex-direction:column; align-items:center; gap:.6rem;
  color:var(--stone); font-size:.72rem; letter-spacing:.16em; text-transform:uppercase;
  z-index:1;
}
.hero__scroll i{
  width:1px; height:38px; background:linear-gradient(var(--gold), transparent);
  position:relative; overflow:hidden;
}
.hero__scroll i::after{
  content:""; position:absolute; top:-100%; left:0; width:100%; height:100%;
  background:var(--gold-light);
  animation:scrollLine 2.2s ease-in-out infinite;
}
@keyframes scrollLine{ 0%{top:-100%;} 60%{top:100%;} 100%{top:100%;} }

/* ============================================
   STATS STRIP
   ============================================ */
.stats{ background:var(--panel); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.stats__inner{
  max-width:var(--container); margin:0 auto; padding:3rem 6vw;
  display:grid; grid-template-columns:repeat(4,1fr); gap:2rem; text-align:center;
}
.stat__num{
  display:block; font-family:var(--serif); font-size:clamp(1.9rem,3.6vw,2.8rem);
  color:var(--gold-light); font-weight:600; margin-bottom:.4rem;
}
.stat__label{ font-size:.78rem; letter-spacing:.08em; color:var(--stone); text-transform:uppercase; }
@media (max-width:700px){ .stats__inner{ grid-template-columns:repeat(2,1fr); } }

/* ============================================
   INTRO
   ============================================ */
.intro{
  max-width:var(--container); margin:8rem auto; padding:0 6vw;
  display:grid; grid-template-columns:1fr 1fr; gap:5rem; align-items:center;
}
.intro__media{ position:relative; }
.intro__media img{ width:100%; border-radius:2px; aspect-ratio:4/5; object-fit:cover; }
.intro__frame{
  position:absolute; top:20px; left:-20px; right:20px; bottom:-20px;
  border:1px solid var(--gold); z-index:-1; border-radius:2px;
}
.intro__content p{ color:var(--stone); margin-bottom:1.1rem; }
.intro__content .section-title{ margin-bottom:1.6rem; }
.intro__list{ margin-top:1.6rem; }
.intro__list li{
  padding-left:1.6rem; position:relative; margin-bottom:.7rem; color:var(--ivory); font-size:.94rem;
}
.intro__list li::before{
  content:""; position:absolute; left:0; top:.55rem; width:8px; height:1px; background:var(--gold);
}
@media (max-width:860px){ .intro{ grid-template-columns:1fr; gap:3rem; margin:5rem auto; } .intro__frame{ display:none; } }

/* ============================================
   GALLERY
   ============================================ */
.gallery{ padding:2rem 0 8rem; }
.gallery__grid{
  max-width:var(--container); margin:0 auto; padding:0 6vw;
  display:grid; grid-template-columns:repeat(4,1fr); grid-auto-rows:220px; gap:1rem;
}
.gallery__item{ position:relative; overflow:hidden; border-radius:2px; cursor:pointer; }
.gallery__item.span-2{ grid-column:span 2; grid-row:span 1; }
.gallery__item img{ width:100%; height:100%; object-fit:cover; transition:transform .8s var(--ease); }
.gallery__item:hover img{ transform:scale(1.08); }
.gallery__item figcaption{
  position:absolute; left:0; right:0; bottom:0; padding:1.1rem 1.2rem;
  background:linear-gradient(0deg, rgba(11,18,14,.88), transparent);
  font-size:.82rem; color:var(--ivory); letter-spacing:.02em;
  opacity:0; transform:translateY(8px); transition:all .4s var(--ease);
}
.gallery__item:hover figcaption{ opacity:1; transform:none; }
@media (max-width:860px){
  .gallery__grid{ grid-template-columns:repeat(2,1fr); grid-auto-rows:180px; }
  .gallery__item.span-2{ grid-column:span 2; }
}

/* ============================================
   AMENITIES
   ============================================ */
.amenities{ background:var(--bg-alt); padding:8rem 0; }
.amenities__grid{
  max-width:var(--container); margin:0 auto; padding:0 6vw;
  display:grid; grid-template-columns:repeat(3,1fr); gap:1px;
  background:var(--line);
  border:1px solid var(--line);
}
.amenity{
  background:var(--bg-alt); padding:2.6rem 2.2rem; transition:background .4s;
}
.amenity:hover{ background:var(--green-deep); }
.amenity__icon{
  display:inline-flex; width:48px; height:48px; color:var(--gold); margin-bottom:1.4rem;
}
.amenity__icon svg{ width:100%; height:100%; }
.amenity h3{ font-family:var(--serif); font-size:1.25rem; font-weight:600; margin-bottom:.6rem; color:var(--ivory); }
.amenity p{ color:var(--stone); font-size:.9rem; }
@media (max-width:860px){ .amenities__grid{ grid-template-columns:1fr; } }

/* ============================================
   PLANS
   ============================================ */
.plans{ padding:8rem 0; }
.plans__tabs{
  max-width:var(--container); margin:0 auto 3rem; padding:0 6vw;
  display:flex; gap:.5rem; flex-wrap:wrap;
}
.plan-tab{
  padding:.9rem 1.8rem; border:1px solid var(--line); color:var(--stone);
  font-size:.85rem; letter-spacing:.03em; border-radius:2px; transition:all .3s;
}
.plan-tab.is-active, .plan-tab:hover{ background:var(--gold); color:#181008; border-color:var(--gold); }

.plans__panels{ max-width:var(--container); margin:0 auto; padding:0 6vw; }
.plan-panel{
  display:none; grid-template-columns:1.1fr 1fr; gap:4rem; align-items:center;
}
.plan-panel.is-active{ display:grid; animation:fadeIn .6s var(--ease); }
@keyframes fadeIn{ from{ opacity:0; transform:translateY(14px);} to{ opacity:1; transform:none; } }
.plan-panel__media img{ width:100%; border-radius:2px; aspect-ratio:4/3; object-fit:cover; }
.plan-panel__info h3{ font-family:var(--serif); font-size:2rem; color:var(--ivory); margin-bottom:.5rem; }
.plan-price{ color:var(--gold-light); font-size:1.1rem; margin-bottom:1.8rem; }
.plan-specs{ margin-bottom:2rem; border-top:1px solid var(--line); }
.plan-specs li{
  display:flex; justify-content:space-between; padding:.85rem 0;
  border-bottom:1px solid var(--line); font-size:.92rem;
}
.plan-specs li span{ color:var(--stone-dim); }
.plan-specs li b{ color:var(--ivory); font-weight:500; }
@media (max-width:860px){ .plan-panel{ grid-template-columns:1fr; gap:2rem; } }

/* ============================================
   LOCATION
   ============================================ */
.location{
  max-width:var(--container); margin:0 auto 8rem; padding:0 6vw;
  display:grid; grid-template-columns:1.2fr 1fr; gap:5rem; align-items:center;
}
.location__map{ position:relative; }
.map-plate{
  position:relative; aspect-ratio:1/1; background:var(--green-deep);
  border:1px solid var(--line); border-radius:4px; overflow:hidden;
}
.map-grid{
  position:absolute; inset:0;
  background-image:
    linear-gradient(rgba(183,146,75,.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(183,146,75,.14) 1px, transparent 1px);
  background-size:32px 32px;
}
.map-pin{
  position:absolute; transform:translate(-50%,-100%);
  font-size:.72rem; color:var(--ivory); white-space:nowrap;
  padding:.35rem .7rem .35rem 1.6rem; background:rgba(11,18,14,.85);
  border:1px solid var(--line); border-radius:20px;
}
.map-pin span{
  position:absolute; left:.6rem; top:50%; transform:translateY(-50%);
  width:7px; height:7px; border-radius:50%; background:var(--gold);
}
.map-pin--main{
  background:var(--gold); color:#181008; font-weight:600; border-color:var(--gold);
  z-index:2;
}
.map-pin--main span{ background:#181008; }
.location__content .section-title{ margin-bottom:1.4rem; }
.location__content p{ color:var(--stone); margin-bottom:1.6rem; }
.location__list li{
  display:flex; gap:.9rem; padding:.9rem 0; border-bottom:1px solid var(--line);
  font-size:.94rem; color:var(--stone);
}
.location__list li b{ color:var(--gold-light); min-width:70px; }
@media (max-width:860px){ .location{ grid-template-columns:1fr; gap:3rem; } }

/* ============================================
   TESTIMONIALS
   ============================================ */
.testi{ background:var(--panel); padding:8rem 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.testi__slider{ max-width:760px; margin:0 auto; padding:0 6vw; text-align:center; position:relative; }
.testi__track{ position:relative; min-height:180px; }
.testi__slide{
  position:absolute; inset:0; opacity:0; transition:opacity .7s var(--ease); pointer-events:none;
}
.testi__slide.is-active{ opacity:1; pointer-events:auto; position:relative; }
.testi__slide p{
  font-family:var(--serif); font-style:italic; font-size:clamp(1.15rem,2vw,1.5rem);
  color:var(--ivory); line-height:1.6; margin-bottom:1.6rem;
}
.testi__author{ color:var(--gold-light); font-size:.85rem; letter-spacing:.03em; }
.testi__dots{ display:flex; justify-content:center; gap:.6rem; margin-top:2.4rem; }
.testi__dots button{
  width:8px; height:8px; border-radius:50%; background:var(--line); transition:.3s;
}
.testi__dots button.is-active{ background:var(--gold); width:22px; border-radius:4px; }

/* ============================================
   CTA / CONTACT
   ============================================ */
.cta{ position:relative; padding:9rem 0; overflow:hidden; }
.cta__media{ position:absolute; inset:0; z-index:0; }
.cta__media img{ width:100%; height:100%; object-fit:cover; }
.cta__overlay{ position:absolute; inset:0; background:linear-gradient(100deg, rgba(11,18,14,.96) 30%, rgba(11,18,14,.65) 100%); }
.cta__form-wrap{ position:relative; z-index:1; max-width:560px; margin:0 6vw; padding:0 1rem; }
@media (min-width:1240px){ .cta__form-wrap{ margin:0 auto 0 calc(50% - 620px + 6vw); } }
.cta__form-wrap p{ color:var(--stone); margin-bottom:2.2rem; }

.form{ display:flex; flex-direction:column; gap:1.2rem; }
.form__row{ display:grid; grid-template-columns:1fr 1fr; gap:1.2rem; }
.form label{ display:flex; flex-direction:column; gap:.5rem; font-size:.8rem; color:var(--stone); }
.form input, .form select{
  background:rgba(244,239,230,.05); border:1px solid var(--line); color:var(--ivory);
  padding:.85rem 1rem; border-radius:2px; font-size:.95rem; outline:none;
  transition:border-color .3s, background .3s;
}
.form input:focus, .form select:focus{ border-color:var(--gold); background:rgba(244,239,230,.08); }
.form select{ appearance:none; }
.form__submit{ margin-top:.6rem; }
.form__note{ font-size:.76rem; color:var(--stone-dim); margin-top:-.4rem; }
@media (max-width:600px){ .form__row{ grid-template-columns:1fr; } }

.form__success{
  display:none; text-align:center; padding:2.4rem 1rem;
  border:1px solid var(--gold); border-radius:4px; background:rgba(183,146,75,.06);
}
.form__success.is-shown{ display:block; animation:fadeIn .6s var(--ease); }
.form.is-hidden{ display:none; }
.form__check{
  display:inline-flex; width:52px; height:52px; align-items:center; justify-content:center;
  border-radius:50%; border:1px solid var(--gold); color:var(--gold-light); font-size:1.4rem; margin-bottom:1rem;
}
.form__success h3{ font-family:var(--serif); font-size:1.4rem; margin-bottom:.6rem; }
.form__success p{ color:var(--stone); }

/* ============================================
   FOOTER
   ============================================ */
.footer{ background:var(--bg-alt); border-top:1px solid var(--line); padding-top:5rem; }
.footer__inner{
  max-width:var(--container); margin:0 auto; padding:0 6vw 3.5rem;
  display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:3rem;
}
.footer__brand p{ color:var(--stone); font-size:.88rem; margin-top:1rem; max-width:26ch; }
.footer__col h4{ font-size:.78rem; letter-spacing:.1em; text-transform:uppercase; color:var(--gold-light); margin-bottom:1.2rem; }
.footer__col p, .footer__col a{ display:block; color:var(--stone); font-size:.88rem; margin-bottom:.7rem; }
.footer__col a:hover{ color:var(--gold-light); }
.footer__social{ display:flex; gap:.8rem; }
.footer__social a{
  width:36px; height:36px; border:1px solid var(--line); border-radius:50%;
  display:flex; align-items:center; justify-content:center; font-size:.7rem;
}
.footer__social a:hover{ border-color:var(--gold); color:var(--gold-light); }
.footer__bottom{
  border-top:1px solid var(--line); padding:1.6rem 6vw; text-align:center;
  font-size:.8rem; color:var(--stone-dim);
}
@media (max-width:860px){ .footer__inner{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer__inner{ grid-template-columns:1fr; } }

/* ============================================
   BACK TO TOP
   ============================================ */
.back-top{
  position:fixed; right:1.6rem; bottom:1.6rem; z-index:900;
  width:46px; height:46px; border-radius:50%; background:var(--gold); color:#181008;
  display:flex; align-items:center; justify-content:center; font-size:1.1rem;
  opacity:0; visibility:hidden; transform:translateY(10px);
  transition:all .4s var(--ease);
}
.back-top.is-visible{ opacity:1; visibility:visible; transform:none; }
.back-top:hover{ background:var(--gold-light); }

/* ============================================
   LIGHTBOX
   ============================================ */
.lightbox{
  position:fixed; inset:0; z-index:2000; background:rgba(6,9,7,.94);
  display:flex; align-items:center; justify-content:center; padding:4vw;
  opacity:0; visibility:hidden; transition:opacity .4s var(--ease);
}
.lightbox.is-open{ opacity:1; visibility:visible; }
.lightbox img{ max-width:100%; max-height:88vh; border-radius:2px; box-shadow:0 30px 80px rgba(0,0,0,.5); }
.lightbox__close{
  position:absolute; top:2rem; right:2rem; font-size:2rem; color:var(--ivory); line-height:1;
}
.lightbox__close:hover{ color:var(--gold-light); }

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.01ms !important; transition-duration:.01ms !important; }
  html{ scroll-behavior:auto; }
}

/* focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible{
  outline:2px solid var(--gold); outline-offset:2px;
}