:root {
  --bg: #0b0f14;
  --panel: #121925;
  --fg: #d7e3f2;

  /* Glow / Stimmung */
  --glow: rgba(0, 255, 180, 0.22);

  /* Pupillen-Offset (wird via JS verändert) */
  --pupil-x: 0px;
  --pupil-y: 0px;

  /* Mund-Parameter (Default = neutral) */
  --mouth-w: 38vw;
  --mouth-h: 10vh;
  --mouth-radius: 999px;
  --mouth-line-y: 50%;
  --mouth-line-h: 10px;
  --mouth-line-opacity: 0.85;

  /* „Smile“-Bogen (0 = aus) */
  --smile: 0;
  /* „Frown“-Bogen (0 = aus) */
  --frown: 0;

  /* „O“-Mund (0 = aus, sonst Größe) */
  --omouth: 0;
}

html, body {
  height: 100%;
  margin: 0;
  background: var(--bg);
  overflow: hidden;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

#face {
  height: 100%;
  display: grid;
  place-items: center;
  gap: 3.5vh;
}

.eyes {
  display: flex;
  gap: 8vw;
  align-items: center;
}

.eye {
  width: 14vw;
  height: 14vw;
  max-width: 220px;
  max-height: 220px;
  border-radius: 999px;
  background: var(--panel);
  box-shadow: 0 0 40px var(--glow);
  position: relative;
  overflow: hidden;
  transition: border-radius 220ms ease, transform 220ms ease, height 220ms ease;
}

/* Pupille */
.eye::after {
  content: "";
  position: absolute;
  inset: 28%;
  border-radius: 999px;
  background: var(--fg);
  opacity: 0.9;
  transform: translate(var(--pupil-x), var(--pupil-y));
  transition: transform 180ms ease;
}

/* Blinzeln: wir "quetschen" das Auge kurz */
.eye.blink {
  transform: scaleY(0.12);
}

/* Mund-Container */
.mouth {
  width: var(--mouth-w);
  height: var(--mouth-h);
  max-width: 600px;
  max-height: 120px;
  border-radius: var(--mouth-radius);
  background: var(--panel);
  box-shadow: 0 0 40px var(--glow);
  position: relative;
  overflow: hidden;
  transition: width 220ms ease, height 220ms ease, border-radius 220ms ease;
}

/* Mund-Shape (Linie + Bögen + O-Mund) */
.mouth-shape {
  position: absolute;
  inset: 0;
}

/* Mund-Linie */
.mouth-shape::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  top: var(--mouth-line-y);
  height: var(--mouth-line-h);
  transform: translateY(-50%);
  background: var(--fg);
  border-radius: 999px;
  opacity: var(--mouth-line-opacity);
  transition: all 220ms ease;
}

/* Smile-Bogen */
.mouth-shape::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  top: 38%;
  height: 55%;
  border: calc(6px + 6px * var(--smile)) solid rgba(215,227,242,0.85);
  border-top: none;
  border-left-color: transparent;
  border-right-color: transparent;
  border-bottom-left-radius: 999px;
  border-bottom-right-radius: 999px;
  opacity: calc(0.10 + 0.60 * var(--smile));
  transition: opacity 220ms ease, border-width 220ms ease;
}

/* Frown-Bogen als extra Element über box-shadow Trick */
.mouth-shape {
  filter: drop-shadow(0 0 0 rgba(0,0,0,0));
}
.mouth-shape.frown::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  bottom: 38%;
  height: 55%;
  border: calc(6px + 6px * var(--frown)) solid rgba(215,227,242,0.85);
  border-bottom: none;
  border-left-color: transparent;
  border-right-color: transparent;
  border-top-left-radius: 999px;
  border-top-right-radius: 999px;
  opacity: calc(0.10 + 0.60 * var(--frown));
}

/* O-Mund: wir machen aus dem Mund-Container einen Kreis und verstecken Linie */
body.has-omouth .mouth {
  width: calc(18vw + 8vw * var(--omouth));
  height: calc(18vw + 8vw * var(--omouth));
  max-width: 260px;
  max-height: 260px;
  border-radius: 999px;
}
body.has-omouth .mouth-shape::after {
  left: 28%;
  right: 28%;
  top: 50%;
  height: 42%;
  border-radius: 999px;
  opacity: 0.9;
}
body.has-omouth .mouth-shape::before {
  opacity: 0; /* Smile aus */
}

/* Label */
.label {
  position: fixed;
  bottom: 18px;
  left: 18px;
  padding: 10px 14px;
  background: rgba(18, 25, 37, 0.75);
  color: var(--fg);
  border-radius: 14px;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.08);
  letter-spacing: 0.5px;
}

/* ===== Emotionen über Variablen ===== */

body.emotion-neutral {
  --glow: rgba(0, 255, 180, 0.22);
  --smile: 0;
  --frown: 0;
  --omouth: 0;
  --mouth-line-opacity: 0.85;
  --mouth-line-h: 10px;
}
body.emotion-neutral .mouth-shape { }
body.emotion-neutral .mouth-shape.frown { } /* no-op */

body.emotion-happy {
  --glow: rgba(0, 255, 120, 0.32);
  --smile: 1;
  --frown: 0;
  --omouth: 0;
  --mouth-line-y: 58%;
  --mouth-line-h: 12px;
  --mouth-line-opacity: 0;
}
body.emotion-happy .mouth-shape { }
body.emotion-happy .mouth-shape.frown { } /* no-op */
body.emotion-happy .mouth-shape::before {
  top: -20%;      /* war 38% -> kleiner = weiter nach oben */
  height: 62%;   /* etwas größer, damit der Bogen schön wirkt */
}

body.emotion-sad {
  --glow: rgba(120, 180, 255, 0.32);
  --smile: 0;
  --frown: 1;
  --omouth: 0;
  --mouth-line-y: 42%;
  --mouth-line-h: 12px;
  --mouth-line-opacity: 0;
}
body.emotion-sad .mouth-shape { }
body.emotion-sad .mouth-shape.frown { } /* no-op */

body.emotion-angry {
  --glow: rgba(255, 70, 70, 0.32);
  --smile: 0;
  --frown: 0.35;
  --omouth: 0;
  --mouth-line-opacity: 0.95;
  --mouth-line-h: 16px;
}
body.emotion-angry .eye {
  border-radius: 26% 74% 60% 40% / 55% 45% 55% 45%;
  transform: rotate(-2deg);
}

body.emotion-surprised {
  --glow: rgba(255, 220, 90, 0.34);
  --smile: 0;
  --frown: 0;
  --omouth: 1;
  --mouth-line-opacity: 0.95;
}
body.emotion-surprised { }
body.emotion-surprised.has-omouth { } /* marker in JS */

body.emotion-sleepy {
  --glow: rgba(180, 180, 255, 0.22);
  --smile: 0;
  --frown: 0;
  --omouth: 0;
  --mouth-line-opacity: 0.55;
  --mouth-line-h: 8px;
}
body.emotion-sleepy .eye {
  height: 6vw;
  max-height: 90px;
}


/* Smooth transition for everything */
* { box-sizing: border-box; }


:root{
  --intensity: 0.7;     /* 0..1 */
  --mouth-open: 0;      /* 0..1 */
}

/* Glow stärker je nach Intensität */
.eye, .mouth {
  box-shadow: 0 0 calc(26px + 30px * var(--intensity)) var(--glow);
}

/* Mund-Linie “öffnet”: wird dicker und etwas tiefer */
.mouth-shape::after {
  height: calc(var(--mouth-line-h) + 26px * var(--mouth-open));
  top: calc(var(--mouth-line-y) + 6% * var(--mouth-open));
  opacity: calc(var(--mouth-line-opacity) + 0.10 * var(--mouth-open));
}


.control-link{
  position: fixed;
  right: 16px;
  bottom: 16px;
  padding: 12px 16px;
  background: rgba(0,0,0,0.6);
  color: white;
  text-decoration: none;
  border-radius: 12px;
  font-family: system-ui, sans-serif;
  font-size: 16px;
}
.control-link:active{ transform: scale(0.98); }