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

:root {
  --bg:        #f2f3f5;
  --cyan:      #232428;
  --cyan-dim:  rgba(35,36,40,0.08);
  --cyan-glow: rgba(20,20,20,0.08);
  --magenta:   #2f2f31;
  --amber:     #6f7075;
  --text:      #1b1b1e;
  --text-dim:  #6d7079;
}

html, body { height: 100%; }

body {
  background:
    radial-gradient(circle at 16% 14%, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0) 42%),
    radial-gradient(circle at 86% 8%, rgba(210,214,221,0.55) 0%, rgba(210,214,221,0) 40%),
    radial-gradient(circle at 72% 78%, rgba(220,222,227,0.5) 0%, rgba(220,222,227,0) 45%),
    var(--bg);
  color: var(--text);
  font-family: 'Share Tech Mono', monospace;
  min-height: 100dvh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  overflow: hidden; position: relative; padding: 16px;
}

/* subtle texture */
body::before {
  content: ''; position: fixed; inset: 0;
  background: repeating-linear-gradient(
    120deg,
    transparent,
    transparent 10px,
    rgba(15,15,15,0.03) 10px,
    rgba(15,15,15,0.03) 11px
  );
  pointer-events: none; z-index: 100;
  opacity: 0.4;
}

/* soft paper grain */
body::after {
  content: ''; position: fixed; inset: -50%; width: 200%; height: 200%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 99; opacity: 0.35;
  animation: grain 0.8s steps(1) infinite;
}

@keyframes grain {
  0%,100%{transform:translate(0,0)}   10%{transform:translate(-2%,-3%)}
  20%{transform:translate(3%,1%)}     30%{transform:translate(-1%,4%)}
  40%{transform:translate(2%,-2%)}    50%{transform:translate(-3%,3%)}
  60%{transform:translate(1%,-4%)}    70%{transform:translate(-2%,2%)}
  80%{transform:translate(4%,-1%)}    90%{transform:translate(-1%,-2%)}
}

#bg-canvas { position: fixed; inset: 0; z-index: 0; opacity: 0.22; }

.art-lines {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background:
    linear-gradient(140deg, rgba(25,25,25,0.06), rgba(25,25,25,0) 28%),
    linear-gradient(320deg, rgba(25,25,25,0.06), rgba(25,25,25,0) 32%);
  mask-image: radial-gradient(circle at center, black 35%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at center, black 35%, transparent 78%);
}

/* ── Main UI ── */
.ui {
  position: relative; z-index: 10;
  display: flex; flex-direction: column; align-items: center;
  gap: clamp(18px, 3.5vh, 38px);
  width: 100%; max-width: 420px;
}

.header { text-align: center; }
.header-title {
  font-family: 'Orbitron', sans-serif; font-weight: 900;
  font-size: clamp(1.5rem, 6vw, 2.8rem); letter-spacing: 0.45em;
  color: var(--text);
  text-shadow: 0 1px 0 rgba(255,255,255,0.7);
}
.header-sub {
  font-size: clamp(0.48rem, 1.5vw, 0.62rem);
  color: var(--text-dim); letter-spacing: 0.26em; margin-top: 6px;
}

.orb-wrap {
  position: relative;
  width: clamp(190px, 58vw, 280px);
  height: clamp(190px, 58vw, 280px);
  display: flex; align-items: center; justify-content: center;
}
#orb-canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; }
.orb-label {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(0.42rem, 1.5vw, 0.58rem);
  letter-spacing: 0.24em; color: var(--text);
  text-align: center; position: relative; z-index: 2;
  text-shadow: none; transition: color 0.4s; pointer-events: none;
}

.status-panel { display: flex; flex-direction: column; align-items: center; gap: 8px; min-height: 54px; }
.s-ind {
  display: flex; align-items: center; gap: 10px;
  font-size: clamp(0.52rem, 1.8vw, 0.68rem); letter-spacing: 0.25em;
  color: var(--text-dim); transition: color 0.4s;
}
.s-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text-dim); flex-shrink: 0; transition: all 0.4s; }

.s-ind.active { color: var(--cyan); }
.s-ind.active .s-dot {
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.9);
  animation: pdot 1.2s ease-in-out infinite;
}
.s-ind.speaking { color: var(--magenta); }
.s-ind.speaking .s-dot { background: var(--magenta); box-shadow: 0 0 0 3px rgba(40,40,45,0.15); }
.s-ind.muted { color: var(--amber); }
.s-ind.muted .s-dot { background: var(--amber); box-shadow: 0 0 0 3px rgba(110,112,118,0.12); }

@keyframes pdot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.6)} }

#s-text  { font-size: clamp(0.48rem, 1.4vw, 0.62rem); color: var(--text-dim); letter-spacing: 0.2em; text-align: center; transition: all 0.4s; }
.ticker  { font-size: clamp(0.38rem, 1.1vw, 0.52rem); color: var(--text-dim); letter-spacing: 0.12em; opacity: 0; transition: opacity 0.5s; text-align: center; }
.ticker.on { opacity: 1; }

.freq-bars { display: flex; align-items: center; gap: 3px; height: 34px; opacity: 0; transition: opacity 0.4s; }
.freq-bars.on { opacity: 1; }
.fbar {
  width: 3px;
  background: var(--cyan);
  border-radius: 2px;
  box-shadow: none;
  height: 4px;
  animation: fdance 0.6s ease-in-out infinite;
  transition: background 0.3s, box-shadow 0.3s;
}
.fbar.muted {
  background: var(--amber) !important;
  box-shadow: 0 0 5px var(--amber) !important;
  animation: none !important;
  height: 2px !important;
  opacity: 0.35;
}
@keyframes fdance { 0%,100%{height:4px} 50%{height:var(--h,20px)} }

.controls { display: flex; gap: 12px; align-items: center; justify-content: center; flex-wrap: wrap; width: 100%; }

.btn {
  font-family: 'Orbitron', sans-serif; font-weight: 700;
  font-size: clamp(0.48rem, 1.5vw, 0.58rem); letter-spacing: 0.22em;
  padding: clamp(11px, 2.5vw, 14px) clamp(16px, 5vw, 26px);
  border: 1px solid var(--text-dim);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  clip-path: polygon(8px 0%,100% 0%,calc(100% - 8px) 100%,0% 100%);
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  min-width: 90px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--cyan-dim);
  transform: translateX(-100%);
  transition: transform 0.3s;
}
.btn:hover::before, .btn:active::before { transform: translateX(0); }
.btn:hover, .btn:active { color: var(--cyan); border-color: var(--cyan); }

.btn.prim { border-color: var(--text); color: var(--text); text-shadow: none; }
.btn.prim::before { background: var(--cyan-dim); }

.btn.dng  { border-color: var(--magenta); color: var(--magenta); }
.btn.dng::before { background: rgba(20,20,20,0.08); }
.btn.dng:hover, .btn.dng:active { color: var(--magenta); border-color: var(--magenta); }

.btn.mic  { border-color: var(--amber); color: var(--amber); }
.btn.mic::before { background: rgba(110,112,118,0.08); }
.btn.mic:hover, .btn.mic:active { color: var(--amber); border-color: var(--amber); }

.btn.hide { display: none !important; }

.help-wrap {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 40;
}

.help-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(20,20,20,0.28);
  background: rgba(255,255,255,0.84);
  color: var(--text);
  font-family: 'Orbitron', sans-serif;
  font-weight: 700;
  font-size: 0.86rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 16px rgba(10,10,10,0.08);
}

.help-tip {
  position: absolute;
  right: 0;
  bottom: 44px;
  width: min(280px, calc(100vw - 32px));
  padding: 10px 12px;
  border: 1px solid rgba(20,20,20,0.2);
  background: rgba(255,255,255,0.94);
  color: var(--text);
  font-size: 0.66rem;
  letter-spacing: 0.03em;
  line-height: 1.45;
  box-shadow: 0 12px 28px rgba(10,10,10,0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.18s ease, transform 0.18s ease, visibility 0.18s ease;
  pointer-events: none;
}

.help-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  margin-bottom: 6px;
}

.help-tip p { margin: 0 0 3px 0; }
.help-tip p:last-child { margin-bottom: 0; }

.help-wrap:hover .help-tip,
.help-wrap:focus-within .help-tip {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}