/* ==========================================================================
   OpenChat — try page
   Same flat, borderless language as Visiyon Tags: pure black canvas,
   single white ink, elevation via soft shadows instead of hairlines.
   Accent is white/signal here (not pink) to keep OpenChat's own identity.
   ========================================================================== */

:root{
  --bg:#000000;
  --panel:#0a0a0a;
  --panel-2:#111111;
  --panel-3:#161616;
  --text:#ffffff;
  --text-2:rgba(255,255,255,.62);
  --text-3:rgba(255,255,255,.38);
  --signal:#ffffff;
  --signal-2:#e6e6e6;
  --danger:#ff6b5e;
  --radius:16px;
  --radius-sm:10px;
  --font-display:'Space Grotesk','Inter',-apple-system,'Segoe UI',sans-serif;
  --font-body:'Inter',-apple-system,'Segoe UI',sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;
  --max:900px;
  --ease:cubic-bezier(.16,.8,.24,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  min-height:100vh;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  line-height:1.5;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,p{margin:0;}

/* No borders anywhere on this page, on purpose — every surface separates
   from the one behind it using background contrast + shadow only. */
*{border:0;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px;}

:focus-visible{outline:2px solid var(--signal);outline-offset:3px;border-radius:4px;}

.noise-overlay{
  position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.035;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- header ---------- */
.site-header{padding:22px 0 0;}
.header-inner{display:flex;align-items:center;justify-content:center;gap:9px;}
.brand{display:flex;align-items:center;gap:9px;font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:-.01em;}
.brand-mark{display:inline-flex;color:var(--text);}
.brand-word-accent{color:var(--text-3);font-weight:600;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:clip;padding:56px 0 40px;}
.hero-glow{
  position:absolute;inset:-20% -10% auto -10%;height:560px;z-index:0;pointer-events:none;
  background:radial-gradient(640px 320px at 50% 0%, rgba(255,255,255,.08), transparent 62%);
  filter:blur(40px);
}
.hero-inner{
  position:relative;z-index:1;
  display:flex;flex-direction:column;align-items:center;gap:34px;text-align:center;
}
.hero-copy{max-width:640px;display:flex;flex-direction:column;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--text-2);margin:0 0 20px;
}
.eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--signal);box-shadow:0 0 0 3px rgba(255,255,255,.16);}
.hero-copy h1{
  font-family:var(--font-display);font-weight:800;letter-spacing:-.035em;
  font-size:clamp(30px,4.4vw,46px);line-height:1.08;margin:0 0 14px;
}
.accent-dot{color:var(--signal);}
.hero-sub{font-size:16px;line-height:1.6;color:var(--text-2);max-width:52ch;margin:0;}

/* ---------- prompt panel (pill, borderless, tags-style) ---------- */
.gen-panel{width:100%;max-width:640px;margin:0 auto;display:flex;flex-direction:column;gap:16px;}

.gen-form{
  display:flex;align-items:center;gap:6px;
  background:var(--panel-2);
  border-radius:999px;padding:6px 6px 6px 20px;
  box-shadow:0 4px 18px rgba(0,0,0,.55);
  transition:box-shadow .2s;
}
.gen-form:focus-within{box-shadow:0 4px 22px rgba(0,0,0,.65), 0 0 0 1px rgba(255,255,255,.16);}
.gen-input{
  flex:1;min-width:0;background:none;outline:0;color:var(--text);
  font-size:16px;font-family:var(--font-body);height:34px;padding:0;
  caret-color:#fff;
}
.gen-input::placeholder{color:rgba(255,255,255,.3);}

.gen-submit{
  flex:none;display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 18px 0 14px;border-radius:999px;cursor:pointer;
  background:linear-gradient(135deg, var(--signal), var(--signal-2));
  color:#000;font-size:13.5px;font-weight:700;letter-spacing:-.005em;white-space:nowrap;
  box-shadow:0 6px 18px -6px rgba(255,255,255,.35);
  transition:transform .16s var(--ease), box-shadow .16s var(--ease), opacity .16s var(--ease);
}
.gen-submit:hover{box-shadow:0 8px 22px -6px rgba(255,255,255,.5);}
.gen-submit:active{transform:scale(.97);}
.gen-submit:disabled{opacity:.55;cursor:not-allowed;box-shadow:none;}
.gen-submit-mark{display:inline-flex;color:#000;flex:none;}
.gen-submit-mark svg{display:block;}

.gen-hint{font-size:12.5px;color:var(--text-3);text-align:center;min-height:16px;}
.gen-hint.is-error{color:var(--danger);}

/* ---------- footer ---------- */
.site-footer{padding:40px 0 34px;text-align:center;}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:8px;}
.footer-copy{font-size:12.5px;color:var(--text-3);}

@media (max-width: 560px){
  .wrap{padding:0 16px;}
  .hero{padding:40px 0 30px;}
  .gen-form{flex-wrap:wrap;border-radius:20px;padding:14px 14px 12px;}
  .gen-input{width:100%;height:38px;order:1;}
  .gen-submit{order:2;margin-left:auto;}
}