/* ============================================
   Chaarithraya Elevators — Premium Design System
   Palette: charcoal base, brushed steel, brass/champagne accent
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (utility)
   ============================================ */

:root{
  --bg:            #FBF6EC;
  --bg-alt:        #F5EDDC;
  --panel:         #FFFDF8;
  --panel-2:       #F1E7D3;
  --line:          #E3D5B8;
  --metal:         #8A7A5E;
  --metal-dim:     #B6A986;
  --brass:         #A8241F;
  --brass-bright:  #D33A32;
  --text:          #2B2117;
  --text-muted:    #6E6153;
  --text-faint:    #9C8E77;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 3px;
  --radius-md: 6px;
  --ease: cubic-bezier(.22,.8,.32,1);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; }
}

body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

img,svg{ display:block; max-width:100%; }
a{ color:inherit; text-decoration:none; }
button{ font-family:inherit; cursor:pointer; }
ul,ol{ list-style:none; margin:0; padding:0; }

h1,h2,h3{ font-family:var(--font-display); font-weight:600; line-height:1.15; margin:0; letter-spacing:-0.01em; }
h2{ font-size:clamp(1.8rem,3.4vw,2.6rem); }
h3{ font-size:1.15rem; }
p{ margin:0; color:var(--text-muted); }

.section-inner{ max-width:1180px; margin:0 auto; padding:0 32px; }
section{ padding:120px 0; position:relative; }
.center{ text-align:center; margin-left:auto; margin-right:auto; }

.eyebrow{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--brass);
  margin:0 0 14px;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:14px 28px;
  font-family:var(--font-body); font-weight:600; font-size:.92rem;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  transition:all .25s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--brass-bright),var(--brass));
  color:#FBF6EC;
}
.btn-primary:hover{ filter:brightness(1.08); transform:translateY(-1px); }
.btn-ghost{
  border-color:var(--line);
  color:var(--text);
  background:rgba(255,255,255,.02);
}
.btn-ghost:hover{ border-color:var(--metal-dim); background:rgba(255,255,255,.05); }
.btn-full{ width:100%; }

/* ---------- Nav ---------- */
.nav{
  position:fixed; top:0; left:0; right:0; z-index:200;
  background:rgba(251,246,236,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .3s var(--ease), background .3s var(--ease);
}
.nav.scrolled{ border-bottom-color:var(--line); background:rgba(251,246,236,.94); }
.nav-inner{
  max-width:1180px; margin:0 auto; padding:0 32px;
  height:76px; display:flex; align-items:center; justify-content:space-between;
}
.brand{ display:flex; align-items:center; gap:10px; }
.brand-mark{
  width:38px; height:38px; border-radius:50%;
  object-fit:cover; border:1px solid var(--line);
  flex-shrink:0;
}
.brand-name{ font-family:var(--font-display); font-weight:600; font-size:1.02rem; }
.brand-name em{ font-style:normal; color:var(--brass); }

.nav-links{ display:flex; align-items:center; gap:32px; }
.nav-links a{ font-size:.9rem; color:var(--text-muted); transition:color .2s; position:relative; }
.nav-links a:hover{ color:var(--text); }
.nav-cta{
  padding:10px 18px; border:1px solid var(--brass); border-radius:var(--radius-sm);
  color:var(--brass) !important;
}
.nav-cta:hover{ background:var(--brass); color:#FBF6EC !important; }

.nav-toggle{ display:none; flex-direction:column; gap:5px; background:none; border:none; padding:8px; }
.nav-toggle span{ width:22px; height:2px; background:var(--metal); transition:.25s; }

/* ---------- Floor indicator rail (signature element) ---------- */
.rail{
  position:fixed; right:28px; top:50%; transform:translateY(-50%);
  z-index:150; display:flex; align-items:center; gap:18px;
}
.rail-track{
  width:2px; height:220px; background:var(--line); position:relative; border-radius:2px;
}
.rail-fill{
  position:absolute; bottom:0; left:0; width:100%; background:linear-gradient(180deg,var(--brass-bright),var(--brass));
  height:16.6%; transition:height .4s var(--ease);
  border-radius:2px;
}
.rail-floors{ display:flex; flex-direction:column-reverse; gap:0; height:220px; justify-content:space-between; }
.rail-floors li{
  display:flex; align-items:baseline; gap:6px; font-family:var(--font-mono); font-size:.68rem;
  color:var(--text-faint); transition:color .3s;
}
.rail-floors li.active{ color:var(--brass-bright); }
.rail-num{ font-weight:500; }
.rail-label{ text-transform:uppercase; letter-spacing:.08em; font-size:.62rem; }
@media (max-width:1100px){ .rail{ display:none; } }

/* ---------- Hero ---------- */
.hero{
  min-height:100vh; display:flex; align-items:center; position:relative; overflow:hidden;
  padding-top:76px;
  background:#12130f url('images/hero-bg.jpg') center 30%/cover no-repeat;
}
.hero::after{
  content:'';
  position:absolute; inset:0; z-index:0;
  background:linear-gradient(180deg, rgba(10,8,6,.72) 0%, rgba(10,8,6,.52) 45%, rgba(10,8,6,.78) 100%);
}
.hero-shaft{ position:absolute; inset:0; z-index:0; }
.hero-glow{
  position:absolute; top:-20%; left:50%; transform:translateX(-50%);
  width:900px; height:900px; border-radius:50%;
  background:radial-gradient(circle,rgba(211,58,50,.14),transparent 60%);
}
.cable{ display:none; }
.door{
  position:absolute; top:0; height:100%; width:52%; background:linear-gradient(135deg,var(--panel-2),var(--bg-alt));
  border-left:1px solid var(--line); border-right:1px solid var(--line);
  transition:transform 1.4s var(--ease);
  z-index:1;
}
.door-left{ left:0; transform-origin:left; }
.door-right{ right:0; transform-origin:right; }
.hero.doors-open .door-left{ transform:translateX(-100%); }
.hero.doors-open .door-right{ transform:translateX(100%); }

.hero-content{
  position:relative; z-index:2; max-width:760px; margin:0 auto; padding:0 32px; text-align:center;
  opacity:0; transform:translateY(16px);
  animation:heroIn 1s var(--ease) 1.1s forwards;
  color:#FBF6EC;
}
.hero-content .eyebrow{ color:var(--brass-bright); }
.hero-content .hero-sub{ color:#E8DFD0; }
@keyframes heroIn{ to{ opacity:1; transform:translateY(0); } }
.hero-title{ font-size:clamp(2.4rem,6vw,4.2rem); margin-bottom:22px; color:#FBF6EC; }
.hero-sub{ font-size:1.05rem; max-width:560px; margin:0 auto 36px; }
.hero-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

.hero-readout{
  position:absolute; bottom:110px; left:50%; transform:translateX(-50%);
  z-index:2; text-align:center; font-family:var(--font-mono);
  opacity:0; animation:heroIn 1s var(--ease) 1.4s forwards;
}
.hero-readout span{ display:block; font-size:2.4rem; color:var(--brass-bright); }
.hero-readout small{ color:#C9BFAE; font-size:.65rem; letter-spacing:.1em; text-transform:uppercase; }

.scroll-cue{
  position:absolute; bottom:36px; left:50%; transform:translateX(-50%); z-index:2;
  width:24px; height:38px; border:1px solid rgba(251,246,236,.5); border-radius:14px;
}
.scroll-cue span{
  position:absolute; top:6px; left:50%; transform:translateX(-50%);
  width:4px; height:8px; background:var(--brass); border-radius:2px;
  animation:cue 1.8s ease-in-out infinite;
}
@keyframes cue{ 0%{ opacity:1; top:6px; } 70%{ opacity:0; top:20px; } 100%{ opacity:0; top:6px; } }

/* ---------- Stats ---------- */
.stats{ padding:90px 0; border-top:1px solid var(--line); border-bottom:1px solid var(--line); background:var(--bg-alt); }
.stats-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:32px; text-align:center; }
.stat-num{ font-family:var(--font-display); font-size:clamp(2rem,4vw,3rem); color:var(--brass-bright); }
.stat-suffix{ font-family:var(--font-display); font-size:clamp(2rem,4vw,3rem); color:var(--brass-bright); }
.stat p{ margin-top:8px; font-size:.88rem; }

/* ---------- About ---------- */
.about-grid{ display:grid; grid-template-columns:1fr 1fr; gap:72px; align-items:center; }
.about-photo{ width:100%; height:auto; border-radius:var(--radius-md); border:1px solid var(--line); box-shadow:0 24px 48px -24px rgba(43,33,23,.25); }
.about-copy p{ margin-bottom:16px; }
.about-copy h2{ margin-bottom:20px; }
.about-points{ margin-top:32px; display:flex; flex-direction:column; gap:14px; }
.point{ display:flex; align-items:center; gap:14px; font-size:.92rem; color:var(--text); }
.point-mark{ font-family:var(--font-mono); color:var(--brass); font-size:.78rem; border:1px solid var(--line); border-radius:50%; width:28px; height:28px; display:flex; align-items:center; justify-content:center; flex-shrink:0; }

/* ---------- Why ---------- */
.why{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.why h2{ margin-bottom:56px; }
.why-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:24px; }
.why-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:32px 24px; transition:border-color .3s, transform .3s;
}
.why-card:hover{ border-color:var(--brass); transform:translateY(-4px); }
.why-icon{ width:32px; height:32px; color:var(--brass); margin-bottom:20px; }
.why-card h3{ margin-bottom:10px; }
.why-card p{ font-size:.88rem; }

/* ---------- Products ---------- */
.products h2{ margin-bottom:56px; }
.products-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.product-card{
  background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:28px; transition:border-color .3s, transform .3s;
  overflow:hidden;
}
.product-card:hover{ border-color:var(--brass); transform:translateY(-4px); }
.product-visual{ width:64px; height:64px; margin-bottom:20px; }
.product-visual svg{ width:100%; height:100%; }
.product-photo{
  margin:-28px -28px 20px; height:170px; overflow:hidden;
  border-radius:var(--radius-md) var(--radius-md) 0 0;
}
.product-photo img{ width:100%; height:100%; object-fit:cover; transition:transform .5s var(--ease); }
.product-card:hover .product-photo img{ transform:scale(1.06); }
.p-frame{ fill:none; stroke:var(--metal); stroke-width:1.5; }
.p-cab{ fill:none; stroke:var(--brass); stroke-width:1.5; }
.p-line{ stroke:var(--line); stroke-width:1; }
.product-card h3{ margin-bottom:8px; }
.product-card p{ font-size:.88rem; }

/* ---------- Projects ---------- */
.projects{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.projects h2{ margin-bottom:56px; }
.projects-grid{ display:grid; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); gap:24px; }
.project-card{ border:1px solid var(--line); border-radius:var(--radius-md); overflow:hidden; background:var(--panel); transition:transform .3s, border-color .3s; }
.project-card:hover{ transform:translateY(-4px); border-color:var(--brass); }
.project-visual{ aspect-ratio:200/140; overflow:hidden; }
.project-visual img{ width:100%; height:100%; object-fit:cover; display:block; transition:transform .5s var(--ease); }
.project-card:hover .project-visual img{ transform:scale(1.06); }
.project-info{ padding:18px 22px; display:flex; justify-content:space-between; align-items:center; border-top:1px solid var(--line); }
.project-info h3{ font-size:1rem; }
.project-info span{ font-family:var(--font-mono); font-size:.72rem; color:var(--text-faint); }

/* ---------- Testimonials ---------- */
.testimonials h2{ margin-bottom:48px; }
.quote-wrap{ display:flex; align-items:center; gap:28px; max-width:760px; margin:0 auto; }
.quote-track{ position:relative; min-height:150px; flex:1; }
.quote{
  position:absolute; inset:0; opacity:0; pointer-events:none; transition:opacity .5s var(--ease);
  text-align:center;
}
.quote.active{ opacity:1; pointer-events:auto; }
.quote p{ font-family:var(--font-display); font-size:1.2rem; color:var(--text); font-weight:400; margin-bottom:18px; line-height:1.5; }
.quote cite{ font-style:normal; font-family:var(--font-mono); font-size:.72rem; color:var(--brass); letter-spacing:.05em; }
.quote-nav{
  width:40px; height:40px; border-radius:50%; border:1px solid var(--line); background:transparent; color:var(--metal);
  flex-shrink:0; transition:.2s;
}
.quote-nav:hover{ border-color:var(--brass); color:var(--brass); }
.quote-dots{ display:flex; justify-content:center; gap:8px; margin-top:32px; }
.quote-dots span{ width:6px; height:6px; border-radius:50%; background:var(--line); cursor:pointer; transition:.2s; }
.quote-dots span.active{ background:var(--brass); width:18px; border-radius:3px; }

/* ---------- FAQ ---------- */
.faq{ background:var(--bg-alt); border-top:1px solid var(--line); border-bottom:1px solid var(--line); }
.faq-grid{ display:grid; grid-template-columns:.8fr 1.2fr; gap:64px; }
.faq-sub{ margin-top:16px; }
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; display:flex; justify-content:space-between; align-items:center;
  background:none; border:none; color:var(--text); font-family:var(--font-display);
  font-size:1rem; padding:22px 0; text-align:left;
}
.faq-plus{ position:relative; width:16px; height:16px; flex-shrink:0; }
.faq-plus::before,.faq-plus::after{ content:''; position:absolute; background:var(--brass); transition:.3s; }
.faq-plus::before{ width:16px; height:2px; top:7px; left:0; }
.faq-plus::after{ width:2px; height:16px; top:0; left:7px; }
.faq-item.open .faq-plus::after{ transform:rotate(90deg); opacity:0; }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .35s var(--ease); }
.faq-a p{ padding-bottom:22px; font-size:.92rem; }
.faq-item.open .faq-a{ max-height:200px; }

/* ---------- CTA ---------- */
.cta{ padding:100px 0; }
.cta-inner{ text-align:center; background:linear-gradient(135deg,var(--panel),var(--panel-2)); border:1px solid var(--line); border-radius:var(--radius-md); padding:72px 32px; }
.cta h2{ margin-bottom:14px; }
.cta p{ margin-bottom:32px; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:64px; }
.contact-info h2{ margin:0 0 14px; }
.contact-info > p{ margin-bottom:28px; }
.contact-list{ display:flex; flex-direction:column; gap:14px; margin-bottom:28px; }
.contact-list li{ display:flex; justify-content:space-between; border-bottom:1px solid var(--line); padding-bottom:10px; font-size:.92rem; }
.contact-list a{ color:var(--text); transition:color .2s; }
.contact-list a:hover{ color:var(--brass); }
.contact-list strong{ color:var(--text-faint); font-weight:500; font-family:var(--font-mono); font-size:.72rem; text-transform:uppercase; letter-spacing:.06em; }
.contact-map{ border:1px solid var(--line); border-radius:var(--radius-md); overflow:hidden; height:220px; }
.contact-map iframe{ width:100%; height:100%; border:0; filter:grayscale(.2) contrast(1.02); }

.contact-form{ background:var(--panel); border:1px solid var(--line); border-radius:var(--radius-md); padding:36px; }
.form-row{ margin-bottom:18px; display:flex; flex-direction:column; gap:8px; }
.form-row label{ font-family:var(--font-mono); font-size:.7rem; text-transform:uppercase; letter-spacing:.06em; color:var(--text-faint); }
.form-row input, .form-row select, .form-row textarea{
  background:var(--bg-alt); border:1px solid var(--line); border-radius:var(--radius-sm);
  color:var(--text); padding:12px 14px; font-family:var(--font-body); font-size:.92rem;
  transition:border-color .2s;
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus{ outline:none; border-color:var(--brass); }
.form-row textarea{ resize:vertical; }
.form-status{ margin-top:14px; font-size:.85rem; color:var(--brass-bright); min-height:1.2em; }

/* ---------- Footer ---------- */
.footer{ border-top:1px solid var(--line); padding:40px 0; }
.footer-inner{ display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:20px; }
.footer-inner .brand{ }
.footer p{ font-size:.82rem; }
.footer-links{ display:flex; gap:22px; }
.footer-links a{ font-size:.85rem; color:var(--text-muted); }
.footer-links a:hover{ color:var(--brass); }

/* ---------- WhatsApp floating button ---------- */
.whatsapp-fab{
  position:fixed; bottom:28px; right:28px; z-index:180;
  width:56px; height:56px; border-radius:50%;
  background:#25D366; color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 8px 22px rgba(37,211,102,.35);
  transition:transform .25s var(--ease), box-shadow .25s var(--ease);
}
.whatsapp-fab:hover{ transform:translateY(-3px) scale(1.05); box-shadow:0 12px 28px rgba(37,211,102,.45); }
@media (max-width:560px){ .whatsapp-fab{ width:48px; height:48px; bottom:18px; right:18px; } }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width:960px){
  .nav-links{
    position:fixed; top:76px; left:0; right:0; bottom:0;
    background:var(--bg); flex-direction:column; justify-content:flex-start;
    padding:40px 32px; gap:26px;
    transform:translateX(100%); transition:transform .3s var(--ease);
  }
  .nav-links.open{ transform:translateX(0); }
  .nav-toggle{ display:flex; }
  .about-grid, .contact-grid, .faq-grid{ grid-template-columns:1fr; }
  .stats-grid{ grid-template-columns:repeat(2,1fr); }
  .why-grid, .products-grid{ grid-template-columns:repeat(2,1fr); }
  .projects-grid{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  section{ padding:80px 0; }
  .stats-grid, .why-grid, .products-grid{ grid-template-columns:1fr; }
  .hero-readout{ display:none; }
}