/* ===== RESET ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

/* ===== ROOT VARIABLES ===== */
:root{
  --bg:#0f0c1d;--bg2:#161128;
  --surface:rgba(22,17,40,0.7);--surface2:#1d1833;
  --blue:#6222ff;--blue-dim:#2020a0;--blue-light:#a78bfa;
  --magenta:#ff0bf9;--cyan:#22d3ee;
  --green:#34d399;--red:#ef4444;--orange:#fb923c;--yellow:#fbbf24;
  --text:#eef2ff;--muted:#a6b2d6;--dim:#8191b6;
  --border:rgba(255,255,255,0.07);--border-blue:rgba(98,34,255,0.2);
  --radius:12px;--radius-lg:16px;
}

/* ===== BASE ===== */
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;overflow-x:hidden;line-height:1.6}
a{text-decoration:none;color:inherit}

/* ===== GRID BACKGROUND ===== */
.grid-bg{position:fixed;inset:0;background-image:
  linear-gradient(rgba(98,34,255,0.025) 1px,transparent 1px),
  linear-gradient(90deg,rgba(98,34,255,0.025) 1px,transparent 1px);
  background-size:64px 64px;pointer-events:none;z-index:0}

/* ===== NAVIGATION ===== */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:10px 24px;display:flex;align-items:center;background:rgba(5,8,22,0.88);backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.05)}
.nav-logo{display:flex;align-items:center;flex:0 0 auto}
.nav-logo .logo-img{height:42px}
.nav-right{display:flex;align-items:center;gap:12px;flex:0 0 auto;justify-content:flex-end}
.nav-ch-logo{display:flex;align-items:center;margin-left:32px}
.nav-ch-logo .ch-logo-img{height:44px;opacity:.9;transition:opacity .2s}
.nav-ch-logo:hover .ch-logo-img{opacity:1}
.nav-brand{font-size:22px;font-weight:800;color:#fff}
.nav-brand .chai{background:linear-gradient(135deg,#2020a0,#6222ff,#ff0bf9);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.nav-links{display:flex;gap:18px;align-items:center;white-space:nowrap;flex:1 1 auto;justify-content:center;min-width:0;margin:0 16px}
.nav-links a{color:var(--muted);font-size:13px;font-weight:500;line-height:1;transition:color .2s}
.nav-links>*{display:inline-flex;align-items:center;height:24px;font-size:13px;line-height:1}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-cta{background:linear-gradient(135deg,var(--blue),#2020a0);color:#fff!important;padding:10px 22px;border-radius:8px;font-weight:600;transition:all .3s;box-shadow:0 4px 20px rgba(98,34,255,.3)}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 8px 30px rgba(98,34,255,.4)}
.nav-dropdown{position:relative}
.nav-dropdown>a{display:inline-flex;align-items:center;gap:8px}
.nav-dropdown>a::after{content:'';width:7px;height:7px;border-right:1.5px solid #fff;border-bottom:1.5px solid #fff;transform:rotate(45deg) translate(-1px,-1px);transition:transform .2s}
.nav-dropdown:hover>a::after{transform:rotate(225deg) translate(-1px,-1px)}
.nav-dropdown-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);min-width:200px;background:rgba(5,8,22,0.96);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,0.08);border-radius:10px;padding:12px 0 8px;opacity:0;visibility:hidden;transition:all .2s;z-index:200;box-shadow:0 12px 40px rgba(0,0,0,.5)}
.nav-dropdown:hover .nav-dropdown-menu{opacity:1;visibility:visible}
.nav-dropdown-menu a{display:flex;align-items:center;gap:10px;padding:10px 20px;color:var(--muted);font-size:13px;font-weight:500;transition:all .15s}
.nav-dropdown-menu .prod-dot{width:6px;height:6px;border-radius:50%;display:inline-block;flex-shrink:0;box-shadow:0 0 8px currentColor;opacity:.85}
.nav-dropdown-menu a:hover{color:#fff;background:rgba(98,34,255,0.1)}

/* ===== CONTAINERS ===== */
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== BUTTONS ===== */
.btn-p{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(135deg,var(--blue),#2020a0);color:#fff;padding:13px 28px;border-radius:10px;font-size:14px;font-weight:700;transition:all .3s;box-shadow:0 4px 20px rgba(98,34,255,.3);position:relative;overflow:hidden}
.btn-p:hover{transform:translateY(-2px);box-shadow:0 12px 40px rgba(98,34,255,.45)}
.btn-p::after{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(45deg,transparent 40%,rgba(255,255,255,0.12) 50%,transparent 60%);animation:btn-shine 3s ease-in-out infinite}
.btn-s{display:inline-flex;align-items:center;gap:8px;color:var(--blue-light);padding:13px 28px;border-radius:10px;font-size:14px;font-weight:600;border:1px solid rgba(98,34,255,.3);transition:all .3s}
.btn-s:hover{background:rgba(98,34,255,.08);border-color:rgba(98,34,255,.5)}

/* ===== SECTION DEFAULTS ===== */
section{padding:100px 20px;position:relative;z-index:1}
.sec-label{display:inline-flex;align-items:center;gap:8px;color:var(--blue-light);font-size:12px;font-weight:600;letter-spacing:2px;text-transform:uppercase;margin-bottom:16px}
.sec-label .ln{width:24px;height:1px;background:var(--blue)}
.sec-title{font-size:clamp(26px,3.5vw,44px);font-weight:800;line-height:1.15;margin-bottom:16px;color:#fff;letter-spacing:-.02em}
.sec-sub{color:var(--muted);font-size:16px;line-height:1.7;max-width:700px}
.grad{background:linear-gradient(135deg,#6222ff,#ff0bf9);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;font-family:'Instrument Serif',Georgia,serif;font-style:italic;font-weight:400;letter-spacing:.005em}
.grad-shift{background:linear-gradient(90deg,var(--blue),var(--magenta),var(--blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-size:300% auto;animation:grad-shift 4s ease-in-out infinite;font-family:'Instrument Serif',Georgia,serif;font-style:italic;font-weight:400;letter-spacing:.005em}

/* ===== HERO DEFAULTS ===== */
.hero-orb{position:absolute;border-radius:50%;pointer-events:none;filter:blur(120px)}
.hero-particles{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.hero-particle{position:absolute;border-radius:50%;animation:particle-rise linear infinite}
.hero-sub{font-size:clamp(15px,1.4vw,18px);color:var(--muted);max-width:660px;margin:0 auto 40px;line-height:1.75;position:relative;z-index:1}
.hero-ctas{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;position:relative;z-index:1}

/* ===== SCROLL REVEAL ===== */
.reveal{opacity:0;transform:translateY(30px);transition:all .7s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-d1{transition-delay:.08s}
.reveal-d2{transition-delay:.16s}
.reveal-d3{transition-delay:.24s}
.reveal-d4{transition-delay:.32s}

/* ===== KEYFRAMES ===== */
@keyframes orb1{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(120px,60px) scale(1.2)}66%{transform:translate(-60px,100px) scale(0.9)}}
@keyframes orb2{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(-100px,-80px) scale(1.15)}66%{transform:translate(80px,-40px) scale(0.85)}}
@keyframes orb3{0%,100%{transform:translate(-50%,0) scale(1);opacity:.5}50%{transform:translate(-50%,-60px) scale(1.3);opacity:1}}
@keyframes ring-spin{from{transform:translate(-50%,-50%) rotate(0deg)}to{transform:translate(-50%,-50%) rotate(360deg)}}
@keyframes particle-rise{0%{transform:translateY(100vh) translateX(0) scale(0);opacity:0}10%{opacity:1;transform:translateY(80vh) translateX(10px) scale(1)}50%{transform:translateY(40vh) translateX(-15px) scale(1)}90%{opacity:.6}100%{transform:translateY(-10vh) translateX(10px) scale(.3);opacity:0}}
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes grad-shift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes btn-shine{0%{transform:translateX(-100%) rotate(45deg)}100%{transform:translateX(100%) rotate(45deg)}}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.7}}
@keyframes pulse-dot{0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(255,11,249,.4)}50%{opacity:.7;box-shadow:0 0 0 8px rgba(255,11,249,0)}}

/* ===== HAMBURGER MENU ===== */
.nav-hamburger{display:none;background:none;border:none;cursor:pointer;padding:8px;flex-direction:column;gap:5px;z-index:101}
.ham-line{display:block;width:22px;height:2px;background:#fff;border-radius:2px;transition:all .3s ease}
.nav-hamburger[aria-expanded="true"] .ham-line:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.nav-hamburger[aria-expanded="true"] .ham-line:nth-child(2){opacity:0}
.nav-hamburger[aria-expanded="true"] .ham-line:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ===== RESPONSIVE ===== */
@media(max-width:1024px){
  .container{padding:0 20px}
}
@media(max-width:768px){
  nav{padding:12px 16px;flex-wrap:wrap}
  .nav-hamburger{display:flex;margin-left:auto}
  .nav-ch-logo{display:none}
  .nav-links{
    display:none;
    width:100%;
    order:10;
    flex-direction:column;
    gap:0;
    position:static;
    transform:none;
    padding:16px 0 8px;
    border-top:1px solid rgba(255,255,255,.06);
    margin-top:12px;
  }
  .nav-links.open{display:flex;align-items:stretch}
  .nav-links>*{display:block;width:100%;height:auto;font-size:15px;line-height:1.4}
  .nav-links>a,.nav-dropdown>a{padding:14px 4px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.06);text-align:left}
  .nav-links>a:last-child{border-bottom:none}
  .nav-dropdown{width:100%;border-bottom:1px solid rgba(255,255,255,.06)}
  .nav-dropdown>a{display:flex !important;justify-content:space-between;align-items:center;width:100%;border-bottom:none}
  .nav-dropdown>a::after{display:inline-block;margin-left:auto;transform:rotate(45deg) translate(-1px,-1px);transition:transform .25s ease}
  .nav-dropdown.open>a{color:#fff}
  .nav-dropdown.open>a::after{transform:rotate(225deg) translate(-1px,-1px)}
  .nav-dropdown-menu{
    position:static;transform:none;
    opacity:1;visibility:visible;
    min-width:auto;background:rgba(98,34,255,.04);
    border:none;border-left:2px solid rgba(98,34,255,.35);
    box-shadow:none;backdrop-filter:none;border-radius:0;
    margin:0 0 0 8px;padding:0 0 0 16px;
    max-height:0;overflow:hidden;
    display:flex;flex-direction:column;
    transition:max-height .3s ease,padding .3s ease,margin-bottom .3s ease
  }
  .nav-dropdown.open .nav-dropdown-menu{
    max-height:600px;
    padding:6px 0 8px 16px;
    margin:0 0 10px 8px
  }
  .nav-dropdown-menu a{padding:11px 0;font-size:13px;color:var(--dim);border-bottom:none}
  .nav-dropdown-menu a:hover{color:#fff;background:none}
  section{padding:60px 16px}
  footer > div:first-child{grid-template-columns:1fr 1fr!important;gap:24px!important}
}
@media(max-width:480px){
  footer > div:first-child{grid-template-columns:1fr!important}
  .btn-p,.btn-s{padding:11px 20px;font-size:13px}
}

/* ===== VIEW MODE TOGGLE (Human / Agent) ===== */
.machine-content{display:none}
[data-view-mode="machine"] .human-content{display:none}
[data-view-mode="machine"] .machine-content{display:block}
[data-view-mode="machine"] footer{display:none}

/* Agent toggle in nav */
.view-toggle{display:flex;align-items:center;height:32px;border:1px solid rgba(255,255,255,.08);border-radius:6px;overflow:hidden;margin-right:8px;margin-left:32px}
.view-toggle label{display:flex;align-items:center;gap:5px;padding:4px 10px;cursor:pointer;font-size:11px;font-weight:600;letter-spacing:.3px;color:var(--muted);transition:all .2s;user-select:none}
.view-toggle label:first-of-type{border-right:1px solid rgba(255,255,255,.08)}
.view-toggle input{position:absolute;opacity:0;pointer-events:none}
.view-toggle input:checked+span{color:#fff}
.view-toggle .dot{width:5px;height:5px;border-radius:50%;border:1px solid currentColor;transition:all .2s}
.view-toggle input:checked~.dot{background:currentColor}

/* Machine content styling */
.machine-view{max-width:780px;margin:0 auto;padding:120px 32px 80px}
.machine-view pre{font-family:'JetBrains Mono','SF Mono',Consolas,monospace;font-size:14px;line-height:1.85;color:var(--muted);white-space:pre-wrap;word-wrap:break-word;margin:0}
.machine-view pre h1,.machine-view pre h2,.machine-view pre h3{color:var(--text)}
.machine-view .mv-header{margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.06)}
.machine-view .mv-header .mv-title{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--blue-light);font-weight:600;letter-spacing:.5px;margin-bottom:8px}
.machine-view .mv-header .mv-url{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--dim)}
.machine-view .mv-footer{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.06);font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--dim);line-height:2}
.machine-view .mv-footer a{color:var(--blue-light);text-decoration:none}

@media(max-width:768px){
  .view-toggle{display:none}
  .machine-view{padding:100px 20px 60px}
}