/* SALIX AI — premium dark UI */
:root{
  --bg:#070711;
  --bg-1:#0c0c18;
  --bg-2:#13131f;
  --bg-3:#1a1a2a;
  --line:#22223a;
  --line-2:#2c2c44;
  --text:#f5f5fa;
  --muted:#9090a8;
  --muted2:#b8b8ce;
  --neon-1:#7c5cff;       /* purple-blue */
  --neon-2:#22d3ee;       /* cyan */
  --gold:#f5b674;         /* warm accent */
  --ok:#22d3a5;
  --err:#ff6b8a;
  --radius:16px;
  --radius-sm:12px;
  --max-chat:760px;
  --max-page:1200px;
  --serif: 'Iowan Old Style', 'Apple Garamond', 'Baskerville', 'Georgia', 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Inter', 'Roboto', sans-serif;
  --mono: 'SF Mono', 'JetBrains Mono', Menlo, Monaco, Consolas, monospace;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:var(--neon-2);text-decoration:none}
a:hover{text-decoration:underline}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font:inherit;color:var(--text);background:transparent;border:none;outline:none}
::selection{background:rgba(124,92,255,.3)}
img,svg{max-width:100%;display:block}

/* ============== LANDING ============== */
.landing{min-height:100vh;background:var(--bg);position:relative;overflow-x:hidden}

/* Aurora background */
.aurora{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.aurora::before,.aurora::after{content:'';position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;animation:aurora 20s ease-in-out infinite}
.aurora::before{width:600px;height:600px;background:radial-gradient(circle,#7c5cff 0%,transparent 70%);top:-200px;left:-100px}
.aurora::after{width:700px;height:700px;background:radial-gradient(circle,#22d3ee 0%,transparent 70%);top:200px;right:-150px;animation-delay:-10s}
@keyframes aurora{0%,100%{transform:translate(0,0) scale(1)}33%{transform:translate(80px,40px) scale(1.1)}66%{transform:translate(-50px,-30px) scale(.95)}}

/* Grain overlay */
.grain{position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.04;background-image:url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>")}

/* Nav */
.nav{position:relative;z-index:10;padding:22px 32px;display:flex;align-items:center;justify-content:space-between;max-width:var(--max-page);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;letter-spacing:.5px;font-size:15px}
.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));display:flex;align-items:center;justify-content:center;font-weight:800;color:#fff;font-size:14px;box-shadow:0 0 30px rgba(124,92,255,.4)}
.nav-links{display:flex;gap:6px;align-items:center}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 20px;border-radius:11px;font-weight:500;font-size:14px;border:1px solid transparent;transition:.2s ease;white-space:nowrap}
.btn-ghost{color:var(--muted2)}
.btn-ghost:hover{background:rgba(255,255,255,.05);color:#fff}
.btn-primary{background:#fff;color:#0a0a14;font-weight:600}
.btn-primary:hover{background:rgba(255,255,255,.92);transform:translateY(-1px);box-shadow:0 10px 40px rgba(255,255,255,.15)}
.btn-outline{border-color:var(--line-2);color:var(--text);background:rgba(255,255,255,.02)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.05)}
.btn svg{width:14px;height:14px}

/* Hero */
.hero{position:relative;z-index:2;max-width:var(--max-page);margin:0 auto;padding:80px 32px 100px;display:grid;grid-template-columns:1.05fr .95fr;gap:60px;align-items:center}
.hero-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;background:rgba(255,255,255,.04);border:1px solid var(--line-2);border-radius:99px;font-size:12px;color:var(--muted2);font-weight:500;margin-bottom:24px}
.hero-pill .dot{width:6px;height:6px;border-radius:50%;background:var(--ok);box-shadow:0 0 12px var(--ok);animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.hero h1{font-family:var(--serif);font-size:clamp(48px,6vw,84px);line-height:1.02;letter-spacing:-2px;margin:0 0 24px;font-weight:500;color:#fff}
.hero h1 em{font-style:italic;font-weight:400;background:linear-gradient(135deg,var(--neon-1) 20%,var(--neon-2) 60%,var(--gold) 100%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{font-size:19px;color:var(--muted2);max-width:520px;margin:0 0 36px;line-height:1.55}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.btn-lg{padding:15px 28px;font-size:15px;border-radius:13px}
.hero-meta{display:flex;gap:24px;margin-top:36px;flex-wrap:wrap;font-size:13px;color:var(--muted)}
.hero-meta div{display:flex;align-items:center;gap:8px}
.hero-meta svg{width:16px;height:16px;color:var(--neon-2)}

/* Hero visual — chat preview */
.hero-visual{position:relative;perspective:1500px}
.chat-card{position:relative;background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line-2);border-radius:20px;padding:24px;backdrop-filter:blur(20px);transform:rotateY(-3deg) rotateX(2deg);box-shadow:0 50px 100px -20px rgba(0,0,0,.5),0 0 80px rgba(124,92,255,.15)}
.chat-card::before{content:'';position:absolute;inset:-1px;border-radius:20px;padding:1px;background:linear-gradient(135deg,rgba(124,92,255,.5),transparent 40%,rgba(34,211,238,.3));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.chat-head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:16px}
.chat-head .dots{display:flex;gap:5px}
.chat-head .dots span{width:9px;height:9px;border-radius:50%;background:var(--line-2)}
.chat-head .dots span:first-child{background:#ff5f56}
.chat-head .dots span:nth-child(2){background:#ffbd2e}
.chat-head .dots span:nth-child(3){background:#27c93f}
.chat-head .url{flex:1;text-align:center;font-size:12px;color:var(--muted);font-family:var(--mono)}
.chat-msg{display:flex;gap:12px;margin-bottom:14px;animation:fadeUp .6s ease-out backwards}
.chat-msg:nth-child(1){animation-delay:.1s}
.chat-msg:nth-child(2){animation-delay:.5s}
.chat-msg:nth-child(3){animation-delay:1.1s}
@keyframes fadeUp{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.chat-ava{width:28px;height:28px;border-radius:8px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700}
.chat-ava.user{background:rgba(255,255,255,.07);color:var(--text)}
.chat-ava.salix{background:linear-gradient(135deg,var(--neon-1),var(--neon-2));color:#0a0a14}
.chat-bub{flex:1;padding:10px 14px;background:rgba(255,255,255,.04);border:1px solid var(--line);border-radius:12px;font-size:14px;line-height:1.5;color:var(--text)}
.chat-bub code{background:rgba(34,211,238,.15);color:var(--neon-2);padding:1px 6px;border-radius:4px;font-family:var(--mono);font-size:.9em}
.chat-typing{display:flex;gap:4px;padding:10px 14px;width:fit-content}
.chat-typing span{width:6px;height:6px;border-radius:50%;background:var(--muted);animation:typing 1.4s ease-in-out infinite}
.chat-typing span:nth-child(2){animation-delay:.2s}
.chat-typing span:nth-child(3){animation-delay:.4s}
@keyframes typing{0%,60%,100%{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}

/* Trusted by / stats strip */
.strip{position:relative;z-index:2;border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:rgba(255,255,255,.01)}
.strip-inner{max-width:var(--max-page);margin:0 auto;padding:32px;display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat .num{font-family:var(--serif);font-size:36px;font-weight:500;color:#fff;letter-spacing:-1px;margin-bottom:4px}
.stat .num em{font-style:italic;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{font-size:13px;color:var(--muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:500}

/* Sections */
.section{position:relative;z-index:2;max-width:var(--max-page);margin:0 auto;padding:120px 32px}
.section-tag{font-size:12px;letter-spacing:3px;color:var(--neon-2);text-transform:uppercase;font-weight:600;margin-bottom:14px}
.section h2{font-family:var(--serif);font-size:clamp(36px,4vw,56px);line-height:1.05;letter-spacing:-1.5px;margin:0 0 20px;font-weight:500;color:#fff}
.section h2 em{font-style:italic;color:var(--neon-2)}
.section-sub{font-size:18px;color:var(--muted2);max-width:600px;margin:0 0 56px}

/* Feature grid */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feat-grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:1100px){.feat-grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.feat-grid-4{grid-template-columns:1fr}}
.feat{padding:32px 28px;background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01));border:1px solid var(--line);border-radius:16px;transition:.3s ease;position:relative;overflow:hidden}
.feat::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 0%,rgba(124,92,255,.08),transparent 60%);opacity:0;transition:.3s}
.feat:hover{border-color:var(--line-2);transform:translateY(-4px)}
.feat:hover::before{opacity:1}
.feat-icon{width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,rgba(124,92,255,.2),rgba(34,211,238,.1));border:1px solid var(--line-2);display:flex;align-items:center;justify-content:center;margin-bottom:20px;color:var(--neon-2);position:relative;z-index:1}
.feat-icon svg{width:20px;height:20px}
.feat h3{font-size:18px;font-weight:600;margin:0 0 8px;color:#fff;position:relative;z-index:1}
.feat p{font-size:14px;color:var(--muted2);margin:0;line-height:1.6;position:relative;z-index:1}

/* Demo section */
.demo{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.demo-text h3{font-family:var(--serif);font-size:36px;line-height:1.1;font-weight:500;letter-spacing:-1px;margin:0 0 16px;color:#fff}
.demo-text p{font-size:17px;color:var(--muted2);line-height:1.6;margin:0 0 28px}
.demo-list{list-style:none;padding:0;margin:0 0 32px;display:flex;flex-direction:column;gap:14px}
.demo-list li{display:flex;align-items:flex-start;gap:12px;font-size:15px;color:var(--text)}
.demo-list svg{width:20px;height:20px;color:var(--neon-2);flex-shrink:0;margin-top:2px}
.demo-mock{background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line-2);border-radius:18px;padding:24px;font-family:var(--mono);font-size:13px;line-height:1.7;color:var(--text);position:relative;overflow:hidden}
.demo-mock .ln-num{color:var(--muted);user-select:none;display:inline-block;width:24px}
.demo-mock .kw{color:#c587ff}
.demo-mock .str{color:#f5b674}
.demo-mock .num{color:#22d3ee}
.demo-mock .com{color:var(--muted)}
.demo-mock .fn{color:#22d3a5}

/* Trust / security */
.trust-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin-top:48px}
.trust{display:flex;gap:18px;padding:28px;background:linear-gradient(180deg,rgba(255,255,255,.025),rgba(255,255,255,.005));border:1px solid var(--line);border-radius:16px;align-items:flex-start}
.trust-icon{width:48px;height:48px;border-radius:12px;background:rgba(124,92,255,.1);border:1px solid rgba(124,92,255,.3);display:flex;align-items:center;justify-content:center;color:var(--neon-1);flex-shrink:0}
.trust-icon svg{width:22px;height:22px}
.trust h4{font-size:16px;font-weight:600;margin:0 0 6px;color:#fff}
.trust p{font-size:14px;color:var(--muted2);margin:0;line-height:1.55}

/* Examples grid (3 chat snippets) */
.examples-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.example{background:linear-gradient(180deg,rgba(255,255,255,.035),rgba(255,255,255,.005));border:1px solid var(--line);border-radius:18px;padding:24px;transition:.25s ease;display:flex;flex-direction:column;gap:14px;position:relative;overflow:hidden}
.example::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(124,92,255,.4),transparent)}
.example:hover{border-color:var(--line-2);transform:translateY(-3px);box-shadow:0 20px 60px rgba(0,0,0,.3)}
.example-tag{font-size:10px;font-weight:700;letter-spacing:2px;color:var(--neon-2);text-transform:uppercase;padding:4px 10px;background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.2);border-radius:99px;align-self:flex-start}
.example-msg{display:flex;gap:10px;align-items:flex-start}
.example-msg .chat-bub{font-size:13.5px;line-height:1.55}
.example-msg.user .chat-bub{background:rgba(255,255,255,.04);border-color:var(--line)}
.example-msg.assistant .chat-bub{background:linear-gradient(135deg,rgba(124,92,255,.08),rgba(34,211,238,.04));border:1px solid rgba(124,92,255,.2)}

/* Manifesto */
.manifesto-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px;margin-top:48px}
.manifesto-item{display:flex;gap:24px;padding:28px;background:linear-gradient(135deg,rgba(124,92,255,.04),transparent);border-left:2px solid rgba(124,92,255,.4);border-radius:0 14px 14px 0;transition:.25s}
.manifesto-item:hover{border-left-color:var(--neon-2);background:linear-gradient(135deg,rgba(34,211,238,.06),transparent)}
.manifesto-num{font-family:var(--serif);font-size:48px;font-weight:500;font-style:italic;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;flex-shrink:0;letter-spacing:-2px}
.manifesto-body h4{font-size:18px;font-weight:600;margin:0 0 8px;color:#fff;letter-spacing:-.3px}
.manifesto-body p{font-size:15px;color:var(--muted2);line-height:1.6;margin:0}

/* Quote section */
.quote-section{padding:80px 32px}
.quote-card{max-width:820px;margin:0 auto;text-align:center;padding:64px 40px;background:linear-gradient(180deg,rgba(255,255,255,.04),transparent);border:1px solid var(--line);border-radius:20px;position:relative}
.quote-mark{position:absolute;top:8px;left:32px;font-family:var(--serif);font-style:italic;font-size:120px;color:rgba(124,92,255,.2);line-height:.7;font-weight:500;user-select:none}
.quote-card blockquote{font-family:var(--serif);font-size:clamp(28px,3.5vw,42px);line-height:1.25;letter-spacing:-1px;font-weight:500;color:#fff;margin:0 0 24px;font-style:normal}
.quote-card blockquote em{font-style:italic;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.quote-by{font-size:13px;color:var(--muted);letter-spacing:2px;text-transform:uppercase;font-weight:600}

@media (max-width:900px){
  .examples-grid{grid-template-columns:1fr}
  .manifesto-grid{grid-template-columns:1fr;gap:18px}
  .manifesto-item{padding:22px;gap:18px}
  .manifesto-num{font-size:38px}
  .quote-card{padding:48px 24px}
}

/* CTA */
.cta{position:relative;z-index:2;max-width:var(--max-page);margin:0 auto 60px;padding:0 32px}
.cta-card{background:linear-gradient(135deg,rgba(124,92,255,.15),rgba(34,211,238,.1) 60%,rgba(245,182,116,.1));border:1px solid var(--line-2);border-radius:24px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
.cta-card::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 50% 100%,rgba(124,92,255,.3),transparent 70%);pointer-events:none}
.cta-card h2{font-family:var(--serif);font-size:clamp(36px,4.5vw,56px);font-weight:500;letter-spacing:-1.5px;margin:0 0 16px;color:#fff;position:relative}
.cta-card h2 em{font-style:italic;color:var(--gold)}
.cta-card p{font-size:18px;color:var(--muted2);max-width:540px;margin:0 auto 32px;position:relative}
.cta-card .btn-primary{font-size:16px;padding:16px 32px;position:relative}

/* Footer */
.foot{position:relative;z-index:2;border-top:1px solid var(--line);padding:48px 32px 36px;max-width:var(--max-page);margin:0 auto;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px;flex-wrap:wrap;gap:16px}
.foot-links{display:flex;gap:20px}
.foot-links a{color:var(--muted)}
.foot-links a:hover{color:#fff}

/* ============== AUTH ============== */
.auth{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;background:var(--bg);position:relative;overflow:hidden}
.auth::before{content:'';position:absolute;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(124,92,255,.15),transparent 70%);top:-200px;left:50%;transform:translateX(-50%);filter:blur(60px);pointer-events:none}
.auth .brand{margin-bottom:36px;position:relative;z-index:1}
.auth-card{position:relative;z-index:1;background:linear-gradient(180deg,rgba(255,255,255,.04),rgba(255,255,255,.01));border:1px solid var(--line-2);border-radius:18px;padding:40px;width:100%;max-width:440px;backdrop-filter:blur(20px)}
.auth-card h2{font-family:var(--serif);font-size:30px;font-weight:500;margin:0 0 8px;letter-spacing:-.8px;color:#fff}
.auth-card .auth-sub{color:var(--muted2);font-size:15px;margin:0 0 32px}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:600}
.field input{padding:14px 16px;background:rgba(0,0,0,.3);border:1px solid var(--line);border-radius:11px;transition:.2s;color:#fff;font-size:15px}
.field input:focus{border-color:var(--neon-1);box-shadow:0 0 0 4px rgba(124,92,255,.15);background:rgba(0,0,0,.5)}
.auth-btn{width:100%;padding:14px;border-radius:11px;background:#fff;color:#0a0a14;font-weight:600;font-size:15px;margin-top:10px;transition:.2s;display:flex;align-items:center;justify-content:center;gap:8px}
.auth-btn:hover{transform:translateY(-1px);box-shadow:0 12px 40px rgba(255,255,255,.15)}
.auth-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.auth-toggle{text-align:center;margin-top:22px;font-size:14px;color:var(--muted2)}
.auth-msg{padding:13px 15px;border-radius:11px;font-size:13px;margin-bottom:18px;line-height:1.5}
.auth-msg.ok{background:rgba(34,211,165,.1);color:var(--ok);border:1px solid rgba(34,211,165,.3)}
.auth-msg.err{background:rgba(255,107,138,.1);color:var(--err);border:1px solid rgba(255,107,138,.3)}
.auth-back{margin-top:28px;text-align:center;position:relative;z-index:1}

/* ============== CHAT APP ============== */
.app{display:grid;grid-template-columns:280px 1fr;height:100vh;background:var(--bg)}
.sidebar{background:var(--bg-1);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0}
.side-top{padding:18px 18px 14px;display:flex;align-items:center;gap:12px}
.side-brand{flex:1;font-weight:700;font-size:14px;display:flex;align-items:center;gap:10px;letter-spacing:.5px}
.new-chat{margin:8px 14px 14px;display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:11px;border:1px solid var(--line);font-size:14px;color:var(--text);transition:.15s;background:rgba(255,255,255,.02)}
.new-chat:hover{border-color:var(--neon-1);background:rgba(124,92,255,.08)}
.new-chat svg{width:14px;height:14px;color:var(--neon-2)}
.conv-list{flex:1;overflow-y:auto;padding:0 8px 14px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.conv-list::-webkit-scrollbar{width:6px}
.conv-list::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.conv-section{font-size:11px;text-transform:uppercase;letter-spacing:1.5px;color:var(--muted);padding:14px 12px 6px;font-weight:600}
.conv-item{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;border-radius:9px;font-size:14px;color:var(--muted2);cursor:pointer;margin:1px 0;transition:.1s;gap:6px}
.conv-item:hover{background:rgba(255,255,255,.04);color:#fff}
.conv-item.active{background:rgba(124,92,255,.12);color:#fff}
.conv-item .conv-title{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.conv-item .conv-del{opacity:0;color:var(--muted);padding:4px;border-radius:4px;flex-shrink:0;transition:.1s}
.conv-item:hover .conv-del{opacity:.7}
.conv-item .conv-del:hover{opacity:1;color:var(--err);background:rgba(255,107,138,.1)}
.conv-item svg{width:14px;height:14px}
.side-bottom{border-top:1px solid var(--line);padding:14px}
.user-card{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:11px;background:rgba(255,255,255,.03);cursor:pointer;transition:.15s}
.user-card:hover{background:rgba(255,255,255,.06)}
.avatar{width:34px;height:34px;border-radius:50%;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:13px;flex-shrink:0;box-shadow:0 0 0 2px rgba(124,92,255,.15)}
.user-info{flex:1;min-width:0}
.user-name{font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#fff}
.user-usage{font-size:11px;color:var(--muted)}

/* main chat */
.main{display:flex;flex-direction:column;min-width:0;position:relative}
.main-top{padding:14px 24px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;background:rgba(7,7,17,.85);backdrop-filter:blur(12px);position:sticky;top:0;z-index:5;min-height:54px}
.main-title{font-size:14px;font-weight:500;color:var(--muted2)}
.main-badge{font-size:11px;letter-spacing:1.5px;color:var(--neon-2);text-transform:uppercase;font-weight:600;padding:5px 12px;border:1px solid rgba(34,211,238,.3);border-radius:99px;background:rgba(34,211,238,.05)}
.scroll-area{flex:1;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.scroll-area::-webkit-scrollbar{width:8px}
.scroll-area::-webkit-scrollbar-thumb{background:var(--line);border-radius:4px}
.welcome{max-width:var(--max-chat);margin:0 auto;padding:96px 24px 48px;text-align:center}
.welcome h1{font-family:var(--serif);font-size:44px;font-weight:500;margin:0 0 12px;letter-spacing:-1px;color:#fff}
.welcome h1 em{font-style:italic;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.welcome p{color:var(--muted2);font-size:16px}
.suggest{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin-top:36px}
.suggest button{padding:16px 18px;background:rgba(255,255,255,.025);border:1px solid var(--line);border-radius:13px;text-align:left;font-size:13px;color:var(--muted2);transition:.2s ease}
.suggest button:hover{border-color:var(--neon-1);background:rgba(124,92,255,.05);color:#fff;transform:translateY(-1px)}
.msgs{max-width:var(--max-chat);margin:0 auto;padding:32px 24px 180px}
.msg{display:flex;gap:14px;margin:28px 0}
.msg .ava{width:32px;height:32px;border-radius:9px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700}
.msg.user .ava{background:rgba(255,255,255,.08);color:var(--text)}
.msg.assistant .ava{background:linear-gradient(135deg,var(--neon-1),var(--neon-2));color:#fff;box-shadow:0 0 20px rgba(124,92,255,.3)}
.msg .body{flex:1;min-width:0;padding-top:5px}
.msg .role{font-size:11px;color:var(--muted);font-weight:600;margin-bottom:6px;text-transform:uppercase;letter-spacing:1.5px}
.msg .content{color:var(--text);overflow-wrap:anywhere;font-size:15px}
.msg .content p{margin:.6em 0}
.msg .content code{background:rgba(34,211,238,.1);color:var(--neon-2);padding:2px 7px;border-radius:5px;font-size:.92em;font-family:var(--mono)}
.msg .content pre{background:var(--bg-2);border:1px solid var(--line);padding:16px 18px;border-radius:12px;overflow-x:auto;font-size:13px;line-height:1.6}
.msg .content pre code{background:transparent;padding:0;color:var(--text)}
.msg .content ul,.msg .content ol{margin:.5em 0;padding-left:1.5em}
.msg .content blockquote{border-left:3px solid var(--neon-1);padding:0 16px;margin:.5em 0;color:var(--muted2)}
.msg .content table{border-collapse:collapse;margin:.5em 0;font-size:14px;width:100%}
.msg .content th,.msg .content td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.msg .content h1,.msg .content h2,.msg .content h3{margin:1em 0 .3em;font-weight:600}
.cursor{display:inline-block;width:8px;height:1em;background:var(--neon-2);margin-left:2px;vertical-align:middle;animation:blink 1s steps(2) infinite}
@keyframes blink{50%{opacity:0}}

.composer-wrap{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(180deg,transparent,var(--bg) 30%);padding:24px;pointer-events:none}
.composer{max-width:var(--max-chat);margin:0 auto;background:var(--bg-2);border:1px solid var(--line-2);border-radius:16px;padding:8px 8px 8px 16px;display:flex;align-items:flex-end;gap:8px;pointer-events:auto;transition:.2s;box-shadow:0 -10px 40px rgba(0,0,0,.3)}
.composer:focus-within{border-color:var(--neon-1);box-shadow:0 0 0 4px rgba(124,92,255,.12),0 -10px 40px rgba(0,0,0,.3)}
.composer textarea{flex:1;resize:none;padding:12px 4px;max-height:280px;line-height:1.5;background:transparent;font-size:15px}
.composer textarea::placeholder{color:var(--muted)}
.send{width:40px;height:40px;border-radius:11px;background:linear-gradient(135deg,var(--neon-1),var(--neon-2));color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:.2s}
.send:hover:not(:disabled){transform:scale(1.05);box-shadow:0 0 24px rgba(124,92,255,.4)}
.send:disabled{opacity:.4;cursor:not-allowed}
.send svg{width:18px;height:18px}
.composer-foot{max-width:var(--max-chat);margin:10px auto 0;font-size:11px;color:var(--muted);text-align:center;pointer-events:auto}

/* settings popover */
.popover-bg{position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:50;display:flex;align-items:center;justify-content:center;padding:24px;backdrop-filter:blur(8px)}
.popover{background:var(--bg-1);border:1px solid var(--line-2);border-radius:18px;padding:32px;max-width:480px;width:100%;box-shadow:0 30px 80px rgba(0,0,0,.5)}
.popover h3{font-family:var(--serif);margin:0 0 20px;font-size:22px;font-weight:500;letter-spacing:-.5px}
.popover .row{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.popover .row:last-child{border:none}
.popover .row .label{color:var(--muted2)}
.popover .row .val{color:#fff;font-weight:500}
.popover .actions{display:flex;gap:10px;margin-top:24px;justify-content:flex-end}

/* Responsive */
@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:40px;padding:48px 24px 60px;text-align:center}
  .hero p{margin-left:auto;margin-right:auto}
  .hero-cta{justify-content:center}
  .hero-meta{justify-content:center}
  .hero-visual{max-width:480px;margin:0 auto}
  .strip-inner{grid-template-columns:repeat(2,1fr);gap:20px;padding:24px}
  .feat-grid{grid-template-columns:1fr;gap:14px}
  .demo{grid-template-columns:1fr;gap:32px}
  .trust-grid{grid-template-columns:1fr}
  .section{padding:80px 24px}
  .cta{padding:0 24px}
  .cta-card{padding:48px 28px}
}
@media (max-width:768px){
  .app{grid-template-columns:1fr}
  .sidebar{position:fixed;left:-280px;top:0;bottom:0;width:280px;z-index:30;transition:.2s}
  .sidebar.open{left:0;box-shadow:0 0 60px rgba(0,0,0,.6)}
  .composer-wrap{padding:14px}
  .welcome{padding:48px 16px 24px}
  .welcome h1{font-size:32px}
  .msgs{padding:20px 16px 140px}
  .suggest{grid-template-columns:1fr}
  .nav{padding:18px 20px}
  .foot{flex-direction:column;text-align:center}
}