/* ============================================================================
   BioBits — Intro Overlay v4 CSS
   Video autoplay (no scroll) + CTA at fox moment + glitch transitions
   ========================================================================== */

/* ── Fixed overlay ─────────────────────────────────────────────────────────── */
#bb-intro {
  position: fixed; inset: 0; z-index: 9000;
  background: #050507; overflow: hidden;
  animation: bi-enter 1s cubic-bezier(.16,1,.3,1) forwards;
  cursor: pointer;
}
@keyframes bi-enter {
  0%   { opacity:0; clip-path:polygon(0 0,100% 0,100% 0,0 0);   filter:brightness(5) hue-rotate(180deg); transform:scaleY(.05); }
  20%  { opacity:1; clip-path:polygon(0 0,100% 0,100% 25%,0 25%); filter:brightness(2.5) hue-rotate(80deg); transform:scaleY(.3) translateX(6px); }
  45%  { clip-path:polygon(0 0,100% 0,100% 100%,0 100%); filter:brightness(1.3); transform:scaleY(1.02) translateX(-3px); }
  70%  { filter:brightness(.85); transform:scaleY(.98); }
  100% { opacity:1; clip-path:polygon(0 0,100% 0,100% 100%,0 100%); filter:none; transform:none; }
}

/* ── Exit glitch ───────────────────────────────────────────────────────────── */
#bb-intro.bi-exit {
  animation: bi-exit .85s cubic-bezier(.65,0,.35,1) forwards;
  cursor: default;
}
@keyframes bi-exit {
  0%   { opacity:1; clip-path:polygon(0 0,100% 0,100% 100%,0 100%); filter:none; }
  12%  { filter:brightness(2.5) hue-rotate(40deg) saturate(2); transform:translateX(-8px); }
  25%  { clip-path:polygon(0 0,100% 0,100% 35%,0 35%,0 50%,100% 50%,100% 70%,0 70%); filter:brightness(3) hue-rotate(120deg); transform:translateX(10px); }
  50%  { clip-path:polygon(0 0,100% 0,100% 8%,0 8%,0 12%,100% 12%,100% 18%,0 18%); filter:brightness(5) hue-rotate(200deg); transform:translateX(-14px) scale(1.02); }
  80%  { clip-path:polygon(0 0,100% 0,100% 0,0 0); opacity:.5; filter:brightness(7); }
  100% { clip-path:polygon(0 0,100% 0,100% 0,0 0); opacity:0; filter:brightness(8); }
}

/* ── Video ──────────────────────────────────────────────────────────────────── */
.bi-vwrap {
  position:absolute; inset:0; background:#050507;
  overflow:hidden;
}
#bi-iframe {
  /* Cover the viewport while maintaining 16:9 aspect ratio (center-crop) */
  position:absolute; top:50%; left:50%;
  width:max(100vw, calc(100vh * 16 / 9));
  height:max(100vh, calc(100vw * 9 / 16));
  transform:translate(-50%, -50%);
  border:0;
  pointer-events:none;   /* hide BunnyCDN player controls; we use our own UI */
  will-change:transform;
}
#bi-vid {
  position:absolute; inset:0; width:100%; height:100%;
  object-fit:cover; will-change:filter,transform;
}

/* ── Scanlines ─────────────────────────────────────────────────────────────── */
.bi-scanlines {
  position:absolute; inset:0; pointer-events:none; z-index:3;
  background:repeating-linear-gradient(0deg,transparent 0px,transparent 3px,rgba(0,0,0,.16) 3px,rgba(0,0,0,.16) 4px);
  opacity:.6;
}

/* ── Scan beam ─────────────────────────────────────────────────────────────── */
.bi-beam {
  position:absolute; left:0; right:0; height:2px; z-index:4; pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(0,240,255,.7) 50%,transparent);
  animation:bi-beamMove 4.2s linear infinite;
}
@keyframes bi-beamMove { 0%{top:-2%;opacity:0} 5%{opacity:.8} 95%{opacity:.35} 100%{top:102%;opacity:0} }

/* ── Vignette ──────────────────────────────────────────────────────────────── */
.bi-vignette {
  position:absolute; inset:0; pointer-events:none; z-index:5;
  background:radial-gradient(ellipse at 50% 50%,transparent 30%,rgba(5,5,7,.72) 100%);
}

/* ── HUD corners ───────────────────────────────────────────────────────────── */
.bi-c {
  position:absolute; width:36px; height:36px; z-index:6; pointer-events:none;
  fill:none; stroke:rgba(0,240,255,.5); stroke-width:1.8;
}
.bi-tl{top:16px;left:16px} .bi-tr{top:16px;right:16px}
.bi-bl{bottom:16px;left:16px} .bi-br{bottom:16px;right:16px}

/* ── HUD bars ──────────────────────────────────────────────────────────────── */
.bi-hud {
  position:absolute; left:0; right:0; z-index:7; pointer-events:none;
  display:flex; justify-content:space-between; align-items:center;
  padding:16px 28px;
  font-family:'Share Tech Mono',monospace; font-size:11px;
  letter-spacing:.2em; text-transform:uppercase;
  color:rgba(0,240,255,.75);
}
.bi-top{top:0} .bi-bot{bottom:0}
.bi-rec{ color:rgba(255,255,255,.55); display:inline-flex; align-items:center; gap:5px; }
.bi-rec b{ color:#FF4D6D; font-size:10px; font-weight:400; animation:bi-blink 1.3s ease-in-out infinite; }
@keyframes bi-blink { 0%,50%,100%{opacity:1} 25%,75%{opacity:.15} }

.bi-flk { animation:bi-flicker 7s ease-in-out infinite; }
@keyframes bi-flicker {
  0%,68%,100%{opacity:.82;transform:translateX(0)}
  69%{opacity:.12;transform:translateX(-3px)} 70%{opacity:1;transform:translateX(2px)}
  71%{opacity:.5;transform:translateX(0)} 72%{opacity:.82}
  84%{opacity:.18;transform:translateX(3px)} 85%{opacity:1;transform:translateX(-1px)} 86%{opacity:.82;transform:translateX(0)}
}

/* ── Audio bars ────────────────────────────────────────────────────────────── */
.bi-aud {
  position:absolute; top:50%; left:28px; transform:translateY(-50%); z-index:7;
  display:flex; align-items:flex-end; gap:3px; height:22px;
  opacity:0; transition:opacity .4s;
}
.bi-aud.on { opacity:.8; }
.bi-aud i {
  display:block; width:3px; border-radius:2px;
  background:#00F0FF; box-shadow:0 0 5px rgba(0,240,255,.6);
  animation:bi-bar .85s ease-in-out infinite;
}
.bi-aud i:nth-child(1){height:55%;animation-delay:-.1s}
.bi-aud i:nth-child(2){height:85%;animation-delay:-.35s}
.bi-aud i:nth-child(3){height:48%;animation-delay:-.2s}
.bi-aud i:nth-child(4){height:72%;animation-delay:-.55s}
@keyframes bi-bar { 0%,100%{transform:scaleY(.3)} 50%{transform:scaleY(1)} }

/* ── Unmute hint ───────────────────────────────────────────────────────────── */
.bi-unmute {
  position:absolute; bottom:60px; left:50%; transform:translateX(-50%);
  z-index:8; pointer-events:none;
  display:flex; align-items:center; gap:10px;
  font-family:'Share Tech Mono',monospace; font-size:12px;
  letter-spacing:.2em; text-transform:uppercase;
  color:rgba(0,240,255,.85); text-shadow:0 0 10px rgba(0,240,255,.4);
  animation:bi-unmutePulse 2s ease-in-out infinite;
  transition:opacity .35s;
}
.bi-unmute.hide { opacity:0; }
.bi-unmute-icon { font-size:18px; }
@keyframes bi-unmutePulse {
  0%,100%{ opacity:.85; transform:translateX(-50%) translateY(0); }
  50%{ opacity:.45; transform:translateX(-50%) translateY(3px); }
}

/* ── Mute toggle button ────────────────────────────────────────────────────── */
.bi-mute-btn {
  position:absolute; bottom:56px; right:28px; z-index:8;
  width:42px; height:42px; border-radius:50%;
  background:rgba(8,8,9,.7); border:1px solid rgba(0,240,255,.3);
  color:#fff; font-size:18px; cursor:pointer;
  display:none; place-items:center;
  backdrop-filter:blur(4px);
  transition:border-color .2s, transform .15s, box-shadow .2s;
}
.bi-mute-btn.show { display:grid; }
.bi-mute-btn:hover {
  border-color:rgba(0,240,255,.7);
  transform:scale(1.08);
  box-shadow:0 0 16px rgba(0,240,255,.4);
}
.bi-mute-btn:active { transform:scale(.95); }

/* ── Progress bar (bottom) ─────────────────────────────────────────────────── */
.bi-prog {
  position:absolute; bottom:0; left:0; height:3px; z-index:9;
  background:linear-gradient(90deg,#00F0FF,#C4F947);
  box-shadow:0 0 12px rgba(0,240,255,.8);
  width:0%; will-change:width;
}

/* ── End state ─────────────────────────────────────────────────────────────── */
.bi-end {
  position:absolute; inset:0; z-index:10;
  display:none; flex-direction:column; align-items:center; justify-content:center; gap:26px;
  background:radial-gradient(ellipse at 50% 44%,rgba(0,240,255,.08),rgba(5,5,7,.88) 68%);
  backdrop-filter:blur(3px);
}
.bi-end.show {
  display:flex;
  animation:bi-endIn .65s cubic-bezier(.16,1,.3,1) forwards;
}
@keyframes bi-endIn {
  0%{opacity:0;clip-path:polygon(0 50%,100% 50%,100% 50%,0 50%)}
  40%{opacity:.75;clip-path:polygon(0 28%,100% 28%,100% 72%,0 72%)}
  100%{opacity:1;clip-path:polygon(0 0,100% 0,100% 100%,0 100%)}
}
.bi-end-eye {
  font-family:'Share Tech Mono',monospace; font-size:12px;
  letter-spacing:.35em; text-transform:uppercase;
  color:#00F0FF; text-shadow:0 0 12px rgba(0,240,255,.5);
  animation:bi-flicker 5.5s ease-in-out infinite;
}

/* Fox */
.bi-fox-ring {
  position:relative; width:clamp(200px,26vw,320px); aspect-ratio:1/1;
  display:grid; place-items:center;
  animation:bi-foxIn .9s cubic-bezier(.16,1,.3,1) forwards;
}
@keyframes bi-foxIn {
  0%{transform:scale(.75);opacity:0;filter:brightness(3) hue-rotate(80deg)}
  45%{transform:scale(1.06);opacity:1;filter:brightness(1.5)}
  75%{transform:scale(.97);filter:brightness(.85)}
  100%{transform:scale(1);filter:none}
}
.bi-fox-ring::before {
  content:""; position:absolute; inset:-10%;
  border:1px dashed rgba(0,240,255,.3); border-radius:50%;
  animation:bi-spin 55s linear infinite;
}
.bi-fox-ring::after {
  content:""; position:absolute; inset:5%;
  border:1px solid rgba(112,0,255,.2); border-radius:50%;
  animation:bi-spin 75s linear infinite reverse;
}
@keyframes bi-spin { to{transform:rotate(360deg)} }

.bi-fox-img {
  width:84%; height:84%; object-fit:contain;
  filter:drop-shadow(0 0 55px rgba(0,240,255,.5));
  animation:bi-foxGlitch 5s ease-in-out infinite;
}
@keyframes bi-foxGlitch {
  0%,74%,100%{filter:drop-shadow(0 0 55px rgba(0,240,255,.5));transform:scale(1)}
  75%{filter:drop-shadow(0 0 80px rgba(0,240,255,1)) hue-rotate(45deg) brightness(1.5);transform:scale(1.015) translateX(4px)}
  77%{filter:drop-shadow(0 0 65px rgba(112,0,255,.7)) hue-rotate(-25deg) brightness(.7);transform:scale(.985) translateX(-3px)}
  79%{filter:drop-shadow(0 0 55px rgba(0,240,255,.5));transform:scale(1)}
}

/* CTA */
#bi-btn {
  font-family:'Orbitron',sans-serif; font-weight:800;
  font-size:17px; letter-spacing:.12em; text-transform:uppercase;
  color:#050507; background:#C4F947; border:none;
  padding:18px 36px; cursor:pointer; border-radius:4px;
  box-shadow:0 0 0 1px #C4F947,0 0 30px rgba(196,249,71,.55),0 0 80px rgba(196,249,71,.25);
  transition:transform .18s cubic-bezier(.16,1,.3,1),box-shadow .25s,filter .2s;
  animation:bi-btnPulse 2.5s ease-in-out infinite;
}
#bi-btn:hover {
  transform:translateY(-2px) scale(1.025);
  filter:brightness(1.12);
  box-shadow:0 0 0 1px #C4F947,0 0 50px rgba(196,249,71,.85),0 0 120px rgba(196,249,71,.4);
}
#bi-btn:active { transform:translateY(0) scale(.98); }
@keyframes bi-btnPulse {
  0%,100%{box-shadow:0 0 0 1px #C4F947,0 0 30px rgba(196,249,71,.55),0 0 80px rgba(196,249,71,.25)}
  50%{box-shadow:0 0 0 1px #C4F947,0 0 44px rgba(196,249,71,.75),0 0 105px rgba(196,249,71,.4)}
}

.bi-end-sub {
  font-family:'Share Tech Mono',monospace; font-size:10px;
  letter-spacing:.25em; text-transform:uppercase; color:rgba(189,193,200,.55);
}

/* ── Mobile ────────────────────────────────────────────────────────────────── */
@media(max-width:720px){
  .bi-hud{padding:10px 14px;font-size:9px}
  #bi-btn{font-size:14px;padding:14px 24px}
  .bi-aud{left:14px}
  .bi-unmute{font-size:10px;bottom:48px}
}