:root {
  color-scheme: light;
  --panel-bg: rgba(255, 255, 255, 0.78);
  --panel-border: rgba(18, 41, 82, 0.1);
  --text-main: #1b2434;
  --text-subtle: rgba(27, 36, 52, 0.68);
  --accent: #1551e5;
}

@property --look-x {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --look-y {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --smile {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --excited {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --surprise {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --active {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --blink {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

@property --sleep-drop {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  font-family: "Segoe UI", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  background: #10151f;
  color: var(--text-main);
}

body {
  min-height: 100vh;
}

.app-shell {
  position: relative;
  width: 100%;
  height: 100%;
}

.stage-2d {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: stretch;
  gap: 0;
  padding: 0;
}

.idle-logo-layer {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}

.preview-panel {
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 30;
  width: min(360px, calc(100vw - 32px));
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 18px;
  background: rgba(10, 16, 26, 0.78);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(14px);
  overflow: hidden;
}

.preview-panel[data-collapsed="true"] {
  display: none;
}

.preview-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  color: rgba(255, 255, 255, 0.92);
}

.preview-panel__title {
  font-size: 13px;
  letter-spacing: 0.02em;
}

.preview-panel__toggle {
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  color: #0c1630;
  background: #f4f7ff;
  cursor: pointer;
}

.preview-panel__body {
  padding: 0 14px 14px;
}

.preview-panel__body.is-hidden {
  display: none;
}

.webcam-preview {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  border-radius: 14px;
  object-fit: cover;
  transform: scaleX(-1);
  background: #0d111c;
}

.portrait-panel {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  height: 100%;
  overflow: hidden;
  background: linear-gradient(145deg, var(--panel-soft), var(--panel-main) 52%, var(--panel-deep));
}

.portrait-panel:nth-child(1),
.portrait-panel:nth-child(3) {
  --panel-main: #2e55d3;
  --panel-deep: #2e55d3;
  --panel-soft: #2e55d3;
}

.portrait-panel:nth-child(2),
.portrait-panel:nth-child(4) {
  --panel-main: #ffd63f;
  --panel-deep: #ffc22d;
  --panel-soft: #ffeb78;
}

.portrait-panel + .portrait-panel {
  border-left: 1px solid rgba(0, 0, 0, 0.08);
}

.portrait-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.08), transparent 22%, rgba(0, 0, 0, 0.08)),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.032) 0 1px, transparent 1px 4px);
  mix-blend-mode: soft-light;
  pointer-events: none;
}

.portrait-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 48%, rgba(0, 0, 0, 0.08));
  pointer-events: none;
}

.idle-logo {
  --logo-x: 50%;
  --logo-y: 30%;
  --logo-rotate: 0deg;
  position: absolute;
  left: var(--logo-x);
  top: var(--logo-y);
  z-index: 6;
  width: clamp(132px, 32vmin, 270px);
  aspect-ratio: 1 / 1;
  object-fit: contain;
  transform: translate(-50%, -50%) rotate(var(--logo-rotate));
  pointer-events: none;
  user-select: none;
  filter: drop-shadow(0 12px 24px rgba(0, 0, 0, 0.18));
  opacity: 1;
  transition: opacity 0.45s ease;
}

.idle-logo.is-hidden {
  opacity: 0;
}

.mascot {
  --look-x: 0;
  --look-y: 0;
  --smile: 0;
  --excited: 0;
  --surprise: 0;
  --active: 0;
  --blink: 0;
  --sleep-drop: 0;
  --blue-character-fill: #1856e9;
  --body-main: var(--blue-character-fill);
  --body-deep: #0c3dbb;
  --body-soft: #3b72ff;
  --blink-eyelid-fill: var(--blue-character-fill);
  --mouth-accent: #ffd437;
  --eyelid-color: transparent;
  position: relative;
  width: min(118%, 70vh);
  aspect-ratio: 1 / 1;
  transform: none;
  transform-origin: 50% 72%;
  transition:
    --smile 0.28s cubic-bezier(0.2, 0.8, 0.2, 1),
    --excited 0.3s cubic-bezier(0.2, 0.8, 0.2, 1),
    --surprise 0.24s cubic-bezier(0.2, 0.8, 0.2, 1),
    --active 0.2s ease;
}

.mascot--yellow {
  --body-main: #ffd63f;
  --body-deep: #ffc22d;
  --body-soft: #ffeb78;
  --mouth-accent: #1556e9;
  --eyelid-color: #ffd63f;
}

.mascot-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  transform: translateY(calc(var(--sleep-drop) * 14px));
  transition: transform 0.34s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.svg-eye-cluster,
.svg-mouth {
  transform-box: fill-box;
  transform-origin: center;
}

.svg-eye-cluster {
  transform:
    translateY(calc(var(--excited) * -10px + var(--sleep-drop) * 12px))
    scaleY(calc(1 - var(--excited) * 0.04));
  transition: transform 0.24s ease;
}

.svg-pupil {
  transform-box: fill-box;
  transform-origin: center;
  transform: translate(calc(var(--look-x) * 74px), calc(var(--look-y) * 28px));
  transition: transform 0.12s ease-out, r 0.22s ease;
}

.mascot-svg--yellow .svg-pupil {
  transform: translate(calc(var(--look-x) * 62px), calc(var(--look-y) * 18px));
}

.svg-eyelid {
  opacity: 1;
}

.mascot-svg--yellow .svg-eyelid {
  transform-box: fill-box;
  transform-origin: 50% 50%;
  transform: translateY(calc(var(--surprise) * -24px));
  transition: transform 0.22s ease;
}

.svg-blue-blink-lid {
  transform-box: fill-box;
  transform-origin: 50% 0;
  transform: scaleY(var(--blink));
  opacity: 1;
  will-change: transform, opacity;
  pointer-events: none;
}

.svg-yellow-blink-lid {
  transform-box: fill-box;
  transform-origin: 50% 0;
  transform: scaleY(var(--blink));
  opacity: 1;
  will-change: transform;
  pointer-events: none;
}

.svg-yellow-blink-lid-right {
  transform: translateY(1px) scaleY(var(--blink));
}

.svg-mouth {
  transition: transform 0.26s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.mascot {
  --funny-mouth-drop: 0px;
}

.svg-mouth-frame {
  transition: d 0.18s linear;
}

.svg-mouth-hole {
  transition: d 0.18s linear;
}

.mascot-shadow {
  display: none;
}

.mascot-body {
  display: none;
}

.mascot--yellow .mascot-body {
  display: none;
}

.eye-cluster {
  position: absolute;
  top: 20%;
  left: 50%;
  width: 75%;
  height: 38%;
  transform:
    translateX(-50%)
    translateY(calc(var(--excited) * -2%))
    scaleY(calc(1 - var(--excited) * 0.04));
  transition: transform 0.24s ease;
}

.eye {
  position: absolute;
  top: 0;
  width: 55%;
  aspect-ratio: 1.02 / 1;
  overflow: hidden;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, 1), rgba(255, 255, 255, 0.98) 54%, #edf1f8 100%);
}

.eye-left {
  left: 0;
}

.eye-right {
  right: 0;
}

.mascot--yellow .eye-cluster {
  top: 22%;
  width: 78%;
}

.mascot--yellow .eye {
  aspect-ratio: 1.18 / 1;
}

.eyelid {
  position: absolute;
  z-index: 2;
  left: -7%;
  right: -7%;
  top: -6%;
  height: 48%;
  border-radius: 0 0 48% 48%;
  background: var(--eyelid-color);
  opacity: 0;
  transform-origin: 50% 0;
  transition:
    opacity 0.24s ease,
    height 0.24s ease;
}

.mascot--yellow .eyelid {
  left: -10%;
  right: -10%;
  top: -8%;
  height: calc(61% - var(--excited) * 4% - var(--surprise) * 3%);
  border-radius: 0 0 44% 44%;
  opacity: 0.94;
  z-index: 4;
}

.pupil {
  position: absolute;
  z-index: 1;
  left: 50%;
  top: 54%;
  width: calc(27% - var(--surprise) * 12% + var(--excited) * 3%);
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 28%, rgba(255, 255, 255, 0.26), transparent 17%),
    #050505;
  transform:
    translate(-50%, -50%)
    translate(calc(var(--look-x) * clamp(14px, 2.5vw, 42px)), calc(var(--look-y) * clamp(8px, 1.2vw, 22px)));
  transition:
    width 0.22s ease,
    transform 0.12s ease-out;
}

.mascot--yellow .pupil {
  top: 58%;
  width: calc(25% - var(--surprise) * 9% + var(--excited) * 1%);
}

.mouth {
  position: absolute;
  z-index: 3;
  left: 50%;
  top: 50%;
  width: 35%;
  height: 15%;
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.16), transparent 42%),
    var(--mouth-accent);
  transform:
    translateX(-50%)
    translateY(calc(var(--excited) * -2px));
  transition:
    width 0.26s cubic-bezier(0.2, 0.8, 0.2, 1),
    height 0.26s cubic-bezier(0.2, 0.8, 0.2, 1),
    top 0.26s cubic-bezier(0.2, 0.8, 0.2, 1),
    border-radius 0.22s ease,
    transform 0.24s ease;
}

.mouth-inner {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 62%;
  height: 21%;
  border-radius: 999px;
  background: #050505;
  transform: translate(-50%, -50%);
  transition:
    width 0.26s cubic-bezier(0.2, 0.8, 0.2, 1),
    height 0.26s cubic-bezier(0.2, 0.8, 0.2, 1),
    top 0.26s cubic-bezier(0.2, 0.8, 0.2, 1),
    border 0.18s ease,
    border-radius 0.22s ease,
    background 0.18s ease;
}

.mascot[data-expression="smile"] .mouth {
  top: 61%;
  width: calc(38% + var(--smile) * 5%);
  height: calc(18% + var(--smile) * 2%);
}

.mascot[data-expression="smile"] .mouth-inner {
  top: 36%;
  width: calc(58% + var(--smile) * 7%);
  height: calc(58% + var(--smile) * 5%);
  border-bottom: clamp(5px, 0.58vw, 9px) solid #050505;
  border-radius: 0 0 999px 999px;
  background: transparent;
}

.mascot[data-expression="excited"] .mouth {
  top: 60%;
  width: calc(39% + var(--excited) * 8%);
  height: calc(23% + var(--excited) * 8%);
  border-radius: 999px;
}

.mascot[data-expression="excited"] .mouth-inner {
  top: 54%;
  width: calc(64% + var(--excited) * 8%);
  height: calc(56% + var(--excited) * 10%);
  border-radius: 0 0 999px 999px;
  background: #050505;
}

.mascot[data-expression="surprised"] .mouth {
  top: 62%;
  width: calc(22% + var(--surprise) * 8%);
  height: calc(22% + var(--surprise) * 8%);
  border-radius: 50%;
}

.mascot[data-expression="surprised"] .mouth-inner {
  top: 50%;
  width: calc(52% + var(--surprise) * 8%);
  height: calc(52% + var(--surprise) * 8%);
  border-radius: 50%;
  background: #050505;
}

.mascot--blue[data-expression="surprised"] .svg-eye-cluster {
  transform: translateY(-4.5%) scale(1.08);
  transform-origin: 50% 50%;
}

.mascot--blue[data-expression="surprised"] .svg-pupil {
  transform: translateY(-3px) scale(1.06);
  transform-origin: 50% 50%;
}

/* TOGGLE: HUD + webcam start */
.hud {
  display: none;
}

.hud h1 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.3;
  font-weight: 700;
}

.status,
.hint,
.expression-readout {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
}

.status {
  color: var(--accent);
}

.expression-readout {
  margin-top: 6px;
  font-weight: 700;
}

.hint {
  margin-top: 10px;
  color: var(--text-subtle);
}

.webcam-video {
  width: 100%;
  height: calc(100% - 24px);
  display: block;
  border-radius: 16px;
  object-fit: cover;
  transform: scaleX(-1);
  background: #0d111c;
}

.webcam-video--hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  border: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
}
/* TOGGLE: HUD + webcam end */

@media (max-width: 760px) {
  .stage-2d {
    inset: 0;
  }

  .stage-2d {
    padding: 0;
  }

  .mascot {
    width: min(128%, 42vh);
  }

  .hud {
    top: 14px;
    width: calc(100% - 28px);
  }

  .hud h1 {
    font-size: 20px;
  }

  .preview-panel {
    top: 12px;
    right: 12px;
    width: min(280px, calc(100vw - 24px));
  }

  .status,
  .hint,
  .expression-readout {
    font-size: 13px;
  }

}

@media (prefers-reduced-motion: reduce) {
  .mascot,
  .eye-cluster,
  .eyelid,
  .pupil,
  .mouth,
  .mouth-inner {
    transition: none;
  }
}

.mascot[data-sleeping="true"]::after {
  content: "Zzz";
  position: absolute;
  left: 62%;
  top: 18%;
  z-index: 20;
  font-size: clamp(28px, 4vw, 72px);
  font-weight: 800;
  color: rgba(255, 255, 255, 0.9);
  animation: sleep-zzz 2.4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes sleep-zzz {
  0% {
    opacity: 0;
    transform: translate(0, 18px) scale(0.7) rotate(-8deg);
  }

  25% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translate(38px, -58px) scale(1.15) rotate(8deg);
  }
}