* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --text: #111114;
  --muted: #707078;
  --line: rgba(0, 0, 0, 0.08);
  --surface: rgba(255, 255, 255, 0.74);
  --shadow: 0 26px 90px rgba(20, 22, 28, 0.13);
  --blue: #007aff;
  --green: #34c759;
  --violet: #6e5cff;
  --red: #ff3b30;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", Inter, Segoe UI, sans-serif;
  background:
    radial-gradient(circle at 50% 9%, rgba(255, 255, 255, 0.98), transparent 34%),
    linear-gradient(180deg, #f7f7f9 0%, #eceef2 48%, #f8f8fa 100%);
  transition: background 420ms ease;
}

body[data-state="thinking"] {
  background:
    radial-gradient(circle at 50% 12%, rgba(247, 245, 255, 0.98), transparent 36%),
    linear-gradient(180deg, #f8f7fb 0%, #efedf6 52%, #f8f8fa 100%);
}

body[data-state="speaking"] {
  background:
    radial-gradient(circle at 50% 12%, rgba(242, 255, 247, 0.98), transparent 36%),
    linear-gradient(180deg, #f7f8f5 0%, #edf4ef 52%, #f8f8fa 100%);
}

body[data-state="error"],
body[data-state="type"] {
  background:
    radial-gradient(circle at 50% 12%, rgba(255, 242, 240, 0.98), transparent 36%),
    linear-gradient(180deg, #faf7f6 0%, #f4eeee 52%, #f8f8fa 100%);
}

button {
  font: inherit;
}

.app {
  min-height: 100vh;
  width: min(100%, 900px);
  margin: 0 auto;
  display: grid;
  place-items: center;
  padding: 28px;
}

.voice {
  position: relative;
  width: min(100%, 520px);
  min-height: min(760px, calc(100vh - 56px));
  display: grid;
  grid-template-rows: 1fr auto auto auto auto;
  justify-items: center;
  align-items: center;
  padding: 34px 24px 30px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: var(--surface);
  box-shadow: var(--shadow);
  backdrop-filter: blur(28px) saturate(1.24);
}

.voice::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 18%, rgba(255, 255, 255, 0.48) 45%, transparent 70%);
  opacity: 0.45;
  transform: translateX(-36%);
}

.stop {
  position: absolute;
  top: 25px;
  right: 24px;
  z-index: 5;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.78);
  color: #1d1d20;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
  cursor: pointer;
  opacity: 0.58;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

.stop:hover,
.stop.active {
  opacity: 1;
  transform: translateY(-1px);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.11);
}

.stop.active {
  color: #fff;
  border-color: rgba(0, 0, 0, 0.02);
  background: #1d1d20;
}

.stop span {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: currentColor;
}

.orb {
  position: relative;
  width: clamp(220px, 42vw, 318px);
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  border-radius: 50%;
  isolation: isolate;
  transform: translateZ(0);
  transition: transform 300ms ease, filter 300ms ease;
  --level: 0;
}

.orb::before,
.orb::after,
.orb-core,
.orb-ring,
.orb-sheen {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.orb::before {
  inset: 10%;
  z-index: 1;
  background:
    radial-gradient(circle at 34% 25%, rgba(255, 255, 255, 0.98), transparent 19%),
    radial-gradient(circle at 64% 70%, rgba(92, 132, 255, 0.78), transparent 31%),
    linear-gradient(145deg, #fbfbfd 0%, #dfe7ff 37%, #8ea4ff 69%, #eef2ff 100%);
  background-size: 140% 140%;
  box-shadow:
    inset 0 -24px 48px rgba(66, 82, 150, 0.22),
    inset 0 18px 42px rgba(255, 255, 255, 0.88),
    0 24px 80px rgba(87, 114, 205, 0.34);
  animation: orbSurface 7s ease-in-out infinite;
}

.orb::after {
  inset: -5%;
  z-index: 0;
  background:
    radial-gradient(circle, rgba(98, 132, 255, 0.2), transparent 62%),
    conic-gradient(from 0deg, transparent, rgba(0, 122, 255, 0.34), transparent 34%, rgba(255, 255, 255, 0.5), transparent 64%, rgba(110, 92, 255, 0.24), transparent);
  filter: blur(12px);
  opacity: 0.64;
  animation: breathe 3.6s ease-in-out infinite, rotateHalo 9s linear infinite;
}

.orb-core {
  inset: 24%;
  z-index: 2;
  background: rgba(255, 255, 255, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.45);
  box-shadow: inset 0 0 32px rgba(255, 255, 255, 0.44);
}

.orb-ring {
  inset: 4%;
  z-index: 3;
  border: 1px solid rgba(76, 99, 160, 0.12);
  box-shadow:
    inset 0 0 30px rgba(255, 255, 255, 0.72),
    0 0 0 1px rgba(255, 255, 255, 0.45);
}

.orb-sheen {
  inset: 13%;
  z-index: 4;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.64), transparent 32%),
    radial-gradient(circle at 72% 76%, rgba(255, 255, 255, 0.18), transparent 26%);
  opacity: 0.72;
}

.orb.listening {
  transform: scale(calc(1.01 + (var(--level) * 0.032)));
}

.orb.listening::after {
  background:
    radial-gradient(circle, rgba(0, 122, 255, calc(0.2 + (var(--level) * 0.18))), transparent 62%),
    conic-gradient(from 0deg, transparent, rgba(0, 122, 255, 0.38), transparent 38%, rgba(255, 255, 255, 0.5), transparent 68%);
  animation-duration: 2.4s, 7s;
}

.orb.thinking {
  transform: scale(1.018);
}

.orb.thinking::before {
  animation: orbSurface 3.4s ease-in-out infinite, thinkingGlow 2.8s ease-in-out infinite;
}

.orb.thinking::after {
  background:
    radial-gradient(circle, rgba(110, 92, 255, 0.22), transparent 63%),
    conic-gradient(from 0deg, rgba(110, 92, 255, 0.38), transparent 22%, rgba(0, 122, 255, 0.2), transparent 52%, rgba(255, 255, 255, 0.44), transparent);
  animation: breathe 2.8s ease-in-out infinite, rotateHalo 2.8s linear infinite;
}

.orb.speaking {
  transform: scale(1.045);
  filter: saturate(1.12);
}

.orb.speaking::after {
  background:
    radial-gradient(circle, rgba(52, 199, 89, 0.28), transparent 64%),
    conic-gradient(from 0deg, transparent, rgba(52, 199, 89, 0.38), transparent 35%, rgba(255, 255, 255, 0.5), transparent 62%);
  animation: breathe 1.25s ease-in-out infinite, rotateHalo 5s linear infinite;
}

.orb.error::before {
  background:
    radial-gradient(circle at 34% 25%, rgba(255, 255, 255, 0.98), transparent 19%),
    radial-gradient(circle at 64% 70%, rgba(255, 59, 48, 0.72), transparent 31%),
    linear-gradient(145deg, #fffafa 0%, #ffe1df 37%, #ff8e86 69%, #fff1f0 100%);
}

.orb.error::after {
  background: radial-gradient(circle, rgba(255, 59, 48, 0.24), transparent 62%);
}

.wave {
  width: 112px;
  height: 28px;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  align-items: center;
  gap: 7px;
  margin-top: 30px;
  opacity: 0.42;
  transition: opacity 240ms ease, transform 240ms ease;
  --level: 0;
}

.wave span {
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: rgba(17, 17, 20, 0.3);
  transform: scaleY(calc(0.72 + (var(--level) * 1.7)));
  transform-origin: center;
  transition: transform 80ms linear, background 240ms ease;
}

.wave.active {
  opacity: 1;
  transform: translateY(-1px);
}

.wave.active span {
  background: var(--green);
  animation: wave 920ms ease-in-out infinite;
}

.wave.active span:nth-child(2) {
  animation-delay: 110ms;
}

.wave.active span:nth-child(3) {
  animation-delay: 220ms;
}

.wave.active span:nth-child(4) {
  animation-delay: 330ms;
}

.wave.active span:nth-child(5) {
  animation-delay: 440ms;
}

.state {
  margin-top: 12px;
  font-size: 27px;
  font-weight: 680;
  letter-spacing: 0;
  text-transform: capitalize;
  transition: color 220ms ease;
}

.hint {
  min-height: 21px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 450;
  letter-spacing: 0;
}

.talk {
  position: relative;
  z-index: 5;
  width: min(100%, 270px);
  min-height: 54px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  margin-top: 22px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: 999px;
  background: rgba(17, 17, 20, 0.92);
  color: #fff;
  box-shadow: 0 18px 44px rgba(17, 17, 20, 0.18);
  cursor: pointer;
  user-select: none;
  touch-action: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.talk:hover {
  transform: translateY(-1px);
  box-shadow: 0 22px 50px rgba(17, 17, 20, 0.22);
}

.talk:disabled {
  cursor: default;
  opacity: 0.48;
  transform: none;
  box-shadow: 0 12px 34px rgba(17, 17, 20, 0.1);
}

.talk.active {
  background: var(--green);
  box-shadow: 0 22px 54px rgba(52, 199, 89, 0.34);
  transform: scale(0.985);
}

.talk-icon {
  width: 14px;
  height: 20px;
  border: 2px solid currentColor;
  border-radius: 999px;
  position: relative;
}

.talk-icon::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -8px;
  width: 16px;
  height: 8px;
  border: 2px solid currentColor;
  border-top: 0;
  border-radius: 0 0 999px 999px;
  transform: translateX(-50%);
}

.talk-icon::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 2px;
  height: 6px;
  border-radius: 999px;
  background: currentColor;
  transform: translateX(-50%);
}

.talk-text {
  font-size: 16px;
  font-weight: 720;
  letter-spacing: 0;
}

body[data-state="speaking"] .state {
  color: #167c37;
}

body[data-state="thinking"] .state {
  color: #5d49d8;
}

body[data-state="error"] .state,
body[data-state="type"] .state {
  color: var(--red);
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(0.94);
    opacity: 0.62;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes rotateHalo {
  to {
    transform: rotate(360deg);
  }
}

@keyframes orbSurface {
  0%,
  100% {
    background-position: 0% 0%;
  }
  50% {
    background-position: 100% 100%;
  }
}

@keyframes thinkingGlow {
  0%,
  100% {
    filter: hue-rotate(0deg);
  }
  50% {
    filter: hue-rotate(18deg);
  }
}

@keyframes wave {
  0%,
  100% {
    transform: scaleY(0.52);
  }
  50% {
    transform: scaleY(2.15);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 620px) {
  .app {
    padding: 0;
  }

  .voice {
    min-height: 100vh;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  .orb {
    width: min(72vw, 292px);
  }
}