/* fsimagegen shared design system — single source of truth.
   Pages add page-specific rules only; tokens/components live here. */

:root{
  /* color */
  --bg:#101312; --bg2:#131715; --panel:#1a201e; --panel2:#161b19;
  --line:rgba(236,240,233,.09); --line-acid:rgba(214,255,75,.3);
  --ink:#ecf0e9; --dim:#a7b0a8; --acid:#d6ff4b; --acid-deep:#9fc428;
  --heal:#ffb454; --fail:#ff6a5e;
  /* type */
  --font:'Bricolage Grotesque',system-ui,sans-serif;
  --mono:'JetBrains Mono',ui-monospace,monospace;
  --t-xs:12px; --t-sm:13.5px; --t-base:15px; --t-md:17px; --t-lg:20px; --t-xl:26px; --t-2xl:34px; --t-3xl:48px;
  /* rhythm */
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:24px; --sp-6:32px; --sp-7:48px; --sp-8:64px;
  --r-sm:8px; --r:12px; --r-lg:16px; --r-xl:20px;
  /* motion */
  --ease:cubic-bezier(.16,1,.3,1);
  --dur-fast:.18s; --dur:.3s; --dur-slow:.6s;
  --shadow:0 20px 60px rgba(0,0,0,.35);
  --shadow-lg:0 30px 80px rgba(0,0,0,.5);
}
*{margin:0;padding:0;box-sizing:border-box}
body{
  background:
    radial-gradient(1000px 600px at 85% -10%, rgba(214,255,75,.07), transparent 60%),
    radial-gradient(700px 500px at 0% 110%, rgba(159,196,40,.05), transparent 55%),
    linear-gradient(180deg,var(--bg) 0%,var(--bg2) 100%);
  color:var(--ink); font-family:var(--font); font-optical-sizing:auto; min-height:100vh;
}
::selection{background:var(--acid);color:#101312}
a{color:inherit}
:focus-visible{outline:2px solid var(--acid);outline-offset:2px;border-radius:4px}

/* ---- bubbles (mount via fsig.mountBubbles) ---- */
.fsig-bubbles{position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:0}
.fsig-bub{position:absolute;bottom:-120px;border-radius:50%;
  background:radial-gradient(circle at 34% 30%, rgba(214,255,75,.14), rgba(214,255,75,.03) 58%, transparent 72%);
  filter:blur(2px);opacity:0;animation:fsig-rise var(--dur-b) linear infinite;animation-delay:var(--del)}
@keyframes fsig-rise{
  0%{transform:translateY(0) scale(1);opacity:0}
  12%{opacity:var(--op)} 68%{opacity:var(--op)}
  100%{transform:translateY(-115vh) scale(1.15);opacity:0}
}

/* ---- nav ---- */
.fsig-nav{position:fixed;top:0;left:0;right:0;z-index:50;height:64px;display:flex;align-items:center;
  background:rgba(16,19,18,.75);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.fsig-nav-in{width:100%;max-width:1120px;margin:0 auto;padding:0 clamp(16px,3vw,32px);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp-4)}
.fsig-logo{display:flex;align-items:center;gap:9px;font-weight:800;font-size:16px;letter-spacing:-.02em;text-decoration:none}
.fsig-logo svg{width:21px;height:21px}

/* ---- buttons + pills ---- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-family:var(--font);
  font-weight:700;font-size:var(--t-base);padding:13px 24px;border-radius:var(--r);border:1px solid transparent;
  cursor:pointer;white-space:nowrap;text-decoration:none;
  transition:transform var(--dur-fast) var(--ease),background var(--dur-fast),border-color var(--dur-fast)}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.55;cursor:default;transform:none}
.btn-acid{background:var(--acid);color:#131810}
.btn-acid:hover{background:#e2ff70}
.btn-ghost{border-color:rgba(236,240,233,.22);color:var(--ink);background:none}
.btn-ghost:hover{border-color:rgba(236,240,233,.5)}
.pill{display:inline-flex;align-items:center;gap:7px;font-family:var(--mono);font-size:13px;font-weight:600;
  color:var(--acid);background:rgba(214,255,75,.08);border:1px solid rgba(214,255,75,.25);
  padding:6px 13px;border-radius:999px;text-decoration:none;transition:background var(--dur-fast)}
.pill:hover{background:rgba(214,255,75,.14)}

/* ---- panel/card base ---- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow)}

/* ---- toast ---- */
.fsig-toast-wrap{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:100;
  display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}
.fsig-toast{background:var(--panel);border:1px solid var(--line-acid);color:var(--ink);
  font-family:var(--font);font-size:var(--t-sm);padding:11px 18px;border-radius:999px;
  box-shadow:var(--shadow);display:flex;align-items:center;gap:8px;
  opacity:0;transform:translateY(12px);transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease)}
.fsig-toast.in{opacity:1;transform:none}
.fsig-toast .dot{width:7px;height:7px;border-radius:50%;background:var(--acid);flex:none}
.fsig-toast.fail{border-color:rgba(255,106,94,.4)}
.fsig-toast.fail .dot{background:var(--fail)}

/* ---- lightbox ---- */
.fsig-lb{position:fixed;inset:0;z-index:90;background:rgba(10,12,11,.88);
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
  display:none;align-items:center;justify-content:center;padding:clamp(12px,3vw,40px)}
.fsig-lb.open{display:flex;animation:fsig-lb-in var(--dur) var(--ease)}
@keyframes fsig-lb-in{from{opacity:0}to{opacity:1}}
.fsig-lb-inner{display:flex;flex-direction:column;gap:var(--sp-3);max-width:min(880px,94vw);width:100%}
.fsig-lb-imgwrap{position:relative;border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:#0b0d0c;max-height:70vh;display:grid;place-items:center}
.fsig-lb-imgwrap img{max-width:100%;max-height:70vh;object-fit:contain;display:block;
  animation:fsig-lb-img var(--dur-slow) var(--ease)}
@keyframes fsig-lb-img{from{opacity:0;transform:scale(.98)}to{opacity:1;transform:none}}
.fsig-lb-cap{font-family:var(--mono);font-size:var(--t-xs);color:var(--dim);line-height:1.6;
  max-height:60px;overflow:auto}
.fsig-lb-bar{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap}
.fsig-lb-acts{display:flex;gap:10px;flex-wrap:wrap}
.fsig-lb-acts .btn{padding:10px 16px;font-size:var(--t-sm)}
.fsig-lb-nav{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;
  background:rgba(16,19,18,.8);border:1px solid var(--line);color:var(--ink);font-size:18px;cursor:pointer;
  display:grid;place-items:center;transition:border-color var(--dur-fast)}
.fsig-lb-nav:hover{border-color:var(--line-acid)}
.fsig-lb-prev{left:10px}.fsig-lb-next{right:10px}
.fsig-lb-close{position:absolute;top:10px;right:10px;width:36px;height:36px;border-radius:50%;
  background:rgba(16,19,18,.8);border:1px solid var(--line);color:var(--ink);cursor:pointer;font-size:15px}
.fsig-lb-form{display:none;gap:8px;width:100%}
.fsig-lb-form.open{display:flex}
.fsig-lb-form input{flex:1;background:var(--panel2);border:1px solid var(--line);color:var(--ink);
  padding:11px 14px;border-radius:var(--r-sm);font-size:var(--t-sm);font-family:var(--font)}
.fsig-lb-form input:focus{outline:none;border-color:var(--line-acid)}

/* ---- reduced motion (system-wide, once) ---- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  .fsig-bub{opacity:0 !important}
  html{scroll-behavior:auto !important}
}