/* ============================================================
   AI Construction Intelligence Platform — Demo Stylesheet
   ============================================================ */

:root{
  --primary:#1E63F2;
  --primary-dark:#0F49C4;
  --orange:#FF7A1A;
  --orange-dark:#E35F00;
  --grey:#64748B;
  --white:#FFFFFF;

  --bg-primary:#0A0E1A;
  --bg-secondary:#0F1526;
  --bg-card:rgba(255,255,255,0.04);
  --bg-card-hover:rgba(255,255,255,0.07);
  --border-soft:rgba(255,255,255,0.08);
  --text-primary:#F1F5FB;
  --text-secondary:#94A1B8;

  --grad-primary:linear-gradient(135deg,#1E63F2 0%,#5B8DEF 100%);
  --grad-orange:linear-gradient(135deg,#FF7A1A 0%,#FFB05A 100%);
  --grad-hero:linear-gradient(135deg,#0A0E1A 0%,#0F2557 55%,#1E63F2 100%);

  --shadow-soft:0 10px 30px rgba(0,0,0,0.35);
  --shadow-glow:0 0 40px rgba(30,99,242,0.25);
  --radius:20px;
}

:root[data-theme="light"]{
  --bg-primary:#F4F6FB;
  --bg-secondary:#EAEFFB;
  --bg-card:rgba(20,30,60,0.04);
  --bg-card-hover:rgba(20,30,60,0.07);
  --border-soft:rgba(20,30,60,0.08);
  --text-primary:#0E1526;
  --text-secondary:#57647D;
  --shadow-soft:0 10px 30px rgba(20,30,60,0.08);
}

*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:'Inter',sans-serif;
  background:var(--bg-primary);
  color:var(--text-primary);
  overflow-x:hidden;
  transition:background .3s ease,color .3s ease;
}
a{text-decoration:none;}
img{max-width:100%;}
.container{width:100%;max-width:1260px;margin:0 auto;padding:0 24px;}
section{position:relative;}
.py-section{padding:100px 0;}
@media(max-width:768px){.py-section{padding:64px 0;}}

::selection{background:var(--primary);color:#fff;}

/* ---------- Utility ---------- */
.text-gradient{
  background:var(--grad-primary);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.text-orange-gradient{
  background:var(--grad-orange);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.section-label{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 18px;border-radius:100px;
  background:var(--bg-card);border:1px solid var(--border-soft);
  font-size:13px;font-weight:600;letter-spacing:.03em;color:var(--primary);
  text-transform:uppercase;margin-bottom:18px;
}
.section-label i{font-size:12px;}
.section-header{max-width:720px;margin:0 auto 56px;text-align:center;}
.section-header.left{margin:0 0 40px;text-align:left;}
.section-title{font-size:clamp(28px,4vw,44px);font-weight:800;line-height:1.15;margin-bottom:14px;letter-spacing:-.02em;}
.section-desc{color:var(--text-secondary);font-size:17px;line-height:1.7;}

.grid{display:grid;gap:24px;}
.grid-2{grid-template-columns:repeat(2,1fr);}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
@media(max-width:960px){.grid-4{grid-template-columns:repeat(2,1fr);}.grid-3{grid-template-columns:repeat(2,1fr);}}
@media(max-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr;}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 30px;border-radius:100px;font-weight:600;font-size:15px;
  border:none;cursor:pointer;transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--grad-primary);color:#fff;box-shadow:0 8px 24px rgba(30,99,242,.35);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(30,99,242,.45);}
.btn-orange{background:var(--grad-orange);color:#fff;box-shadow:0 8px 24px rgba(255,122,26,.35);}
.btn-orange:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(255,122,26,.45);}
.btn-outline{background:transparent;color:var(--text-primary);border:1px solid var(--border-soft);}
.btn-outline:hover{background:var(--bg-card);border-color:var(--primary);transform:translateY(-3px);}
.btn-sm{padding:9px 20px;font-size:13px;}

/* ---------- Navbar ---------- */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:18px 0;transition:all .3s ease;
}
.navbar.scrolled{
  padding:12px 0;background:rgba(10,14,26,0.85);backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border-soft);
}
:root[data-theme="light"] .navbar.scrolled{background:rgba(244,246,251,0.85);}
.navbar .container{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text-primary);}
.brand-icon{
  width:38px;height:38px;border-radius:11px;background:var(--grad-primary);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px;
}
.nav-links{display:flex;align-items:center;gap:6px;list-style:none;}
.nav-links a{
  padding:9px 16px;border-radius:100px;font-size:14px;font-weight:500;color:var(--text-secondary);transition:.2s;
}
.nav-links a:hover,.nav-links a.active{color:var(--text-primary);background:var(--bg-card);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.theme-toggle{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--border-soft);
  background:var(--bg-card);color:var(--text-primary);display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle{display:none;width:40px;height:40px;border:1px solid var(--border-soft);border-radius:10px;background:var(--bg-card);color:var(--text-primary);cursor:pointer;}
@media(max-width:960px){
  .nav-links{position:fixed;top:74px;left:16px;right:16px;flex-direction:column;align-items:stretch;
    background:var(--bg-secondary);border:1px solid var(--border-soft);border-radius:16px;padding:14px;
    display:none;box-shadow:var(--shadow-soft);}
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 16px;}
  .nav-toggle{display:flex;align-items:center;justify-content:center;}
}

/* ---------- Hero ---------- */
.hero{
  min-height:100vh;display:flex;align-items:center;
  background:var(--grad-hero);
  padding:150px 0 80px;position:relative;overflow:hidden;color:#fff;
}
:root[data-theme="light"] .hero{color:#fff;}
.hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 20% 20%,rgba(255,122,26,.25),transparent 45%),
             radial-gradient(circle at 80% 70%,rgba(30,99,242,.35),transparent 50%);
}
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center;}
@media(max-width:960px){.hero-grid{grid-template-columns:1fr;}}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;padding:8px 18px;border-radius:100px;
  background:rgba(255,255,255,0.1);border:1px solid rgba(255,255,255,0.2);
  font-size:13px;font-weight:600;margin-bottom:24px;backdrop-filter:blur(8px);
}
.hero h1{font-size:clamp(34px,5.2vw,60px);font-weight:800;line-height:1.1;letter-spacing:-.02em;margin-bottom:20px;}
.hero p.lead{font-size:19px;color:rgba(255,255,255,.85);max-width:520px;margin-bottom:32px;line-height:1.7;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:44px;}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap;}
.hero-stats .stat b{display:block;font-size:26px;font-weight:800;}
.hero-stats .stat span{font-size:13px;color:rgba(255,255,255,.7);}

/* Hero pipeline visual */
.pipeline{
  background:rgba(255,255,255,0.06);border:1px solid rgba(255,255,255,0.15);
  border-radius:var(--radius);padding:24px;backdrop-filter:blur(14px);box-shadow:var(--shadow-soft);
}
.pipeline-step{
  display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:14px;
  background:rgba(255,255,255,0.05);margin-bottom:10px;opacity:0;transform:translateX(20px);
  animation:pipeIn .6s ease forwards;
}
.pipeline-step:last-child{margin-bottom:0;}
.pipeline-step .num{
  width:32px;height:32px;flex:0 0 32px;border-radius:9px;background:var(--grad-orange);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.pipeline-step div strong{display:block;font-size:14px;}
.pipeline-step div small{color:rgba(255,255,255,.65);font-size:12px;}
.pipeline-arrow{text-align:center;color:rgba(255,255,255,.5);font-size:13px;margin:2px 0;}
@keyframes pipeIn{to{opacity:1;transform:translateX(0);}}

/* ---------- Trust strip ---------- */
.trust-strip{padding:36px 0;border-top:1px solid var(--border-soft);border-bottom:1px solid var(--border-soft);background:var(--bg-secondary);}
.trust-strip .container{display:flex;flex-wrap:wrap;gap:14px 34px;align-items:center;justify-content:center;}
.trust-strip span{font-size:13px;font-weight:600;color:var(--text-secondary);white-space:nowrap;}
.trust-label{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--text-secondary);opacity:.7;}

/* ---------- Cards ---------- */
.card{
  background:var(--bg-card);border:1px solid var(--border-soft);border-radius:var(--radius);
  padding:32px;transition:all .3s ease;position:relative;overflow:hidden;
}
.card:hover{background:var(--bg-card-hover);transform:translateY(-6px);box-shadow:var(--shadow-soft);border-color:rgba(30,99,242,.35);}
.card-icon{
  width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:22px;margin-bottom:20px;color:#fff;
}
.icon-blue{background:var(--grad-primary);}
.icon-orange{background:var(--grad-orange);}
.icon-grey{background:linear-gradient(135deg,#475569,#64748B);}
.card h4{font-size:19px;font-weight:700;margin-bottom:10px;}
.card p{color:var(--text-secondary);font-size:14.5px;line-height:1.65;margin-bottom:16px;}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag{
  font-size:12px;font-weight:600;padding:5px 12px;border-radius:100px;
  background:rgba(30,99,242,.1);color:var(--primary);border:1px solid rgba(30,99,242,.2);
}
:root[data-theme="light"] .tag{background:rgba(30,99,242,.08);}

/* ---------- Feature showcase ---------- */
.feature-block{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:center;
  background:var(--bg-card);border:1px solid var(--border-soft);border-radius:28px;padding:48px;margin-bottom:28px;
}
.feature-block.reverse{grid-template-columns:1.1fr .9fr;}
.feature-block.reverse .feature-visual{order:2;}
@media(max-width:900px){.feature-block,.feature-block.reverse{grid-template-columns:1fr;padding:32px;}.feature-block.reverse .feature-visual{order:0;}}
.feature-visual{
  background:var(--bg-secondary);border:1px solid var(--border-soft);border-radius:20px;padding:26px;
}
.flow-chip{
  display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:12px;background:var(--bg-card);
  border:1px solid var(--border-soft);margin-bottom:8px;font-size:13.5px;font-weight:600;
}
.flow-chip i{color:var(--primary);width:20px;text-align:center;}
.flow-arrow{text-align:center;color:var(--text-secondary);margin:2px 0;font-size:12px;}
.feature-text .num-badge{
  display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;
  background:var(--grad-orange);color:#fff;font-weight:700;font-size:14px;margin-bottom:16px;
}

/* ---------- Dashboard ---------- */
.dash-shell{
  background:var(--bg-card);border:1px solid var(--border-soft);border-radius:28px;padding:28px;box-shadow:var(--shadow-soft);
}
.dash-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:20px;}
@media(max-width:900px){.dash-grid{grid-template-columns:repeat(2,1fr);}}
.dash-tile{
  background:var(--bg-secondary);border:1px solid var(--border-soft);border-radius:16px;padding:20px;
}
.dash-tile .label{font-size:12.5px;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.04em;}
.dash-tile .value{font-size:26px;font-weight:800;}
.dash-tile .delta{font-size:12.5px;font-weight:600;margin-top:6px;}
.delta.up{color:#20C997;}
.delta.warn{color:#FF7A1A;}
.progress-bar{height:8px;border-radius:100px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:10px;}
.progress-bar span{display:block;height:100%;border-radius:100px;background:var(--grad-primary);}
.dash-row{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;}
@media(max-width:900px){.dash-row{grid-template-columns:1fr;}}
.dash-panel{background:var(--bg-secondary);border:1px solid var(--border-soft);border-radius:16px;padding:22px;}
.dash-panel h5{font-size:15px;font-weight:700;margin-bottom:16px;display:flex;align-items:center;justify-content:between;gap:8px;}
.ai-suggestion{display:flex;gap:10px;padding:12px;border-radius:12px;background:rgba(30,99,242,.08);border:1px solid rgba(30,99,242,.15);margin-bottom:10px;font-size:13px;}
.ai-suggestion i{color:var(--primary);margin-top:2px;}

/* ---------- Comparison table ---------- */
.compare-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--bg-card);border:1px solid var(--border-soft);border-radius:20px;overflow:hidden;}
.compare-table th,.compare-table td{padding:16px 20px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--border-soft);}
.compare-table th{background:var(--bg-secondary);font-weight:700;}
.compare-table tr:last-child td{border-bottom:none;}
.compare-table td.no{color:var(--text-secondary);}
.compare-table td.yes{color:#20C997;font-weight:600;}
.compare-table i{width:18px;}

/* ---------- Testimonials ---------- */
.testi-card{background:var(--bg-card);border:1px solid var(--border-soft);border-radius:20px;padding:30px;}
.testi-stars{color:var(--orange);margin-bottom:14px;font-size:14px;}
.testi-card p{color:var(--text-secondary);line-height:1.7;margin-bottom:20px;font-size:15px;}
.testi-person{display:flex;align-items:center;gap:12px;}
.testi-avatar{width:44px;height:44px;border-radius:50%;background:var(--grad-primary);display:flex;align-items:center;justify-content:center;font-weight:700;color:#fff;}
.testi-person strong{display:block;font-size:14px;}
.testi-person span{font-size:12.5px;color:var(--text-secondary);}

/* ---------- CTA ---------- */
.cta-box{
  background:var(--grad-hero);border-radius:32px;padding:70px 40px;text-align:center;color:#fff;position:relative;overflow:hidden;
}
.cta-box::before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,rgba(255,122,26,.3),transparent 50%);}
.cta-box *{position:relative;z-index:1;}
.cta-box h2{font-size:clamp(26px,4vw,40px);font-weight:800;margin-bottom:16px;}
.cta-box p{color:rgba(255,255,255,.8);margin-bottom:30px;max-width:560px;margin-left:auto;margin-right:auto;}

/* ---------- Footer ---------- */
.footer{background:var(--bg-secondary);border-top:1px solid var(--border-soft);padding:60px 0 24px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px;}
@media(max-width:900px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer h6{font-size:14px;font-weight:700;margin-bottom:16px;}
.footer ul{list-style:none;display:flex;flex-direction:column;gap:10px;}
.footer a{color:var(--text-secondary);font-size:14px;}
.footer a:hover{color:var(--primary);}
.footer-bottom{border-top:1px solid var(--border-soft);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:var(--text-secondary);}

/* ---------- AI Chat Widget ---------- */
.ai-chat-fab{
  position:fixed;bottom:26px;right:26px;width:60px;height:60px;border-radius:50%;
  background:var(--grad-orange);display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;
  border:none;cursor:pointer;box-shadow:0 10px 30px rgba(255,122,26,.4);z-index:1100;
}
.ai-chat-panel{
  position:fixed;bottom:98px;right:26px;width:340px;max-width:calc(100vw - 40px);height:440px;
  background:var(--bg-secondary);border:1px solid var(--border-soft);border-radius:20px;box-shadow:var(--shadow-soft);
  display:none;flex-direction:column;overflow:hidden;z-index:1100;
}
.ai-chat-panel.open{display:flex;}
.ai-chat-head{padding:16px 18px;background:var(--grad-primary);color:#fff;display:flex;align-items:center;gap:10px;font-weight:700;font-size:14px;}
.ai-chat-body{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;}
.chat-msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:13.5px;line-height:1.5;}
.chat-msg.bot{background:var(--bg-card);border:1px solid var(--border-soft);align-self:flex-start;border-bottom-left-radius:4px;}
.chat-msg.user{background:var(--grad-primary);color:#fff;align-self:flex-end;border-bottom-right-radius:4px;}
.ai-chat-suggestions{padding:10px 16px;display:flex;flex-wrap:wrap;gap:8px;border-top:1px solid var(--border-soft);}
.chat-suggest{
  font-size:12px;padding:7px 12px;border-radius:100px;background:var(--bg-card);border:1px solid var(--border-soft);
  cursor:pointer;color:var(--text-primary);
}
.chat-suggest:hover{border-color:var(--primary);}

/* ---------- Page loader ---------- */
.page-loader{position:fixed;inset:0;background:var(--bg-primary);z-index:9999;display:flex;align-items:center;justify-content:center;transition:opacity .4s ease,visibility .4s ease;}
.page-loader.hidden{opacity:0;visibility:hidden;}
.loader-ring{width:44px;height:44px;border:3px solid var(--border-soft);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- AOS-lite reveal ---------- */
/* Content is visible by default; JS opts elements into the hidden/animate-in state
   only once it has confirmed it can also reveal them, so a JS failure never hides content. */
body.reveal-ready [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
body.reveal-ready [data-reveal].in{opacity:1;transform:translateY(0);}

/* ---------- WhatsApp mockup ---------- */
.wa-mockup{
  background:#0B141A;border:1px solid var(--border-soft);border-radius:20px;overflow:hidden;
}
.wa-head{
  background:#1F2C34;color:#E9EDEF;padding:16px 20px;font-weight:700;font-size:14.5px;
  display:flex;align-items:center;gap:10px;
}
.wa-head i{color:#25D366;}
.wa-body{padding:20px;display:flex;flex-direction:column;gap:10px;background:#0B141A;min-height:220px;}
.wa-bubble{
  max-width:82%;padding:10px 14px;border-radius:10px;font-size:13.5px;line-height:1.55;color:#E9EDEF;
}
.wa-bubble.in{background:#1F2C34;align-self:flex-start;border-bottom-left-radius:2px;}
.wa-bubble.out{background:#005C4B;align-self:flex-end;border-bottom-right-radius:2px;}

/* ---------- MCP terminal ---------- */
.mcp-terminal{
  background:#0A0E1A;border-radius:20px;padding:24px;font-family:'SFMono-Regular',Consolas,monospace;
  font-size:13px;line-height:1.9;overflow-x:auto;
}
.mcp-line{white-space:pre;color:#CBD5E1;}
.mcp-comment{color:#64748B;}
.mcp-fn{color:#5B8DEF;font-weight:600;}
.mcp-str{color:#FFB05A;}
.mcp-resp{color:#20C997;padding-left:14px;}

/* ---------- Integrations ---------- */
.integration-chip{
  display:flex;align-items:center;justify-content:center;gap:8px;padding:16px;border-radius:14px;
  background:var(--bg-card);border:1px solid var(--border-soft);font-size:13.5px;font-weight:700;text-align:center;color:var(--text-primary);
}

/* ---------- Demo tabs ---------- */
.demo-tabs{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:28px;}
.demo-tab{
  padding:11px 20px;border-radius:100px;background:var(--bg-card);border:1px solid var(--border-soft);
  font-size:13.5px;font-weight:600;color:var(--text-secondary);cursor:pointer;transition:.2s;
}
.demo-tab.active{background:var(--grad-primary);color:#fff;border-color:transparent;}
.demo-panel{display:none;}
.demo-panel.active{display:block;}
.typing{opacity:.6;font-style:italic;}

/* Scroll top */
.scroll-top{
  position:fixed;bottom:26px;left:26px;width:44px;height:44px;border-radius:50%;background:var(--bg-card);
  border:1px solid var(--border-soft);color:var(--text-primary);display:flex;align-items:center;justify-content:center;
  cursor:pointer;opacity:0;visibility:hidden;transition:.3s;z-index:1000;
}
.scroll-top.show{opacity:1;visibility:visible;}