:root {
  --bg-deep: #030712;
  --fg: #e8f1ff;
  --muted: rgba(190, 210, 240, 0.45);
  --accent: #6ea8ff;
  --line: rgba(140, 180, 255, 0.1);
  --core-size: min(84vw, 23rem);
  --core-level: 0;
  --app-top: 0px;
  --app-left: 0px;
  --app-width: 100%;
  --app-height: 100dvh;
  color-scheme: dark;
}

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

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: manipulation;
  background: var(--bg-deep);
  color: var(--fg);
  font-family: Outfit, "SF Pro Text", sans-serif;
  font-weight: 300;
  -webkit-tap-highlight-color: transparent;
  -webkit-text-size-adjust: 100%;
}

body {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 75% 52% at 50% 30%, rgba(50, 110, 220, 0.16), transparent 58%),
    radial-gradient(ellipse 90% 55% at 50% 100%, rgba(10, 30, 70, 0.55), transparent 55%),
    linear-gradient(180deg, #050b18 0%, var(--bg-deep) 48%, #02050e 100%);
}

.app {
  position: fixed;
  top: var(--app-top);
  left: var(--app-left);
  width: var(--app-width);
  height: var(--app-height);
  max-width: 100%;
  margin: 0;
  padding:
    calc(env(safe-area-inset-top, 0px) + 1.1rem)
    calc(env(safe-area-inset-right, 0px) + 1.15rem)
    calc(env(safe-area-inset-bottom, 0px) + 0.85rem)
    calc(env(safe-area-inset-left, 0px) + 1.15rem);
  overflow: hidden;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 0.65rem;
}

.header {
  text-align: center;
  min-width: 0;
  padding-top: 0.15rem;
  position: relative;
}

.header-btn {
  position: absolute;
  top: 0.2rem;
  right: 0;
  appearance: none;
  border: 0;
  background: transparent;
  color: rgba(190, 210, 240, 0.7);
  font-family: Outfit, "SF Pro Text", sans-serif;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.2rem;
  cursor: pointer;
}

.header-btn:active {
  color: rgba(230, 240, 255, 0.95);
}

.wordmark {
  margin: 0;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.55rem, 6.2vw, 2.05rem);
  font-weight: 600;
  letter-spacing: 0.42em;
  text-indent: 0.42em;
  color: rgba(210, 225, 255, 0.95);
  text-shadow: 0 0 28px rgba(80, 140, 255, 0.28);
}

.stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 0;
  min-width: 0;
  gap: 1.1rem;
  overflow: hidden;
}

.status {
  margin: 0;
  min-height: 1.15em;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: lowercase;
  text-indent: 0.28em;
  opacity: 0;
  transition: opacity 0.45s ease, color 0.45s ease;
}

.status.is-active {
  opacity: 1;
  color: rgba(140, 185, 255, 0.85);
}

/* —— MARTHA blue tech pulse —— */
.core {
  position: relative;
  width: var(--core-size);
  height: var(--core-size);
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-appearance: none;
  appearance: none;
  isolation: isolate;
}

.core:disabled {
  opacity: 0.55;
  cursor: default;
}

.core:active .core-orb {
  transform: scale(0.97);
}

.core-glow,
.core-orb,
.core-wave {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  pointer-events: none;
}

.core-wave {
  border: 1px solid rgba(110, 170, 255, 0.22);
  opacity: 0;
  transform: scale(0.72);
  transition: transform 0.08s linear, opacity 0.08s linear, border-color 0.08s linear;
}

.core-glow {
  inset: -22%;
  background: radial-gradient(
    circle,
    rgba(80, 150, 255, calc(0.14 + var(--core-level) * 0.42)) 0%,
    rgba(40, 100, 220, 0.08) 42%,
    transparent 70%
  );
  filter: blur(12px);
  animation: glow-breathe 5.2s ease-in-out infinite;
  will-change: transform, opacity;
  transition: transform 0.08s linear, opacity 0.08s linear;
}

.core-orb {
  inset: 24%;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 40%, rgba(200, 225, 255, 0.7) 0%, rgba(70, 140, 255, 0.45) 36%, rgba(8, 20, 48, 0.96) 74%);
  box-shadow:
    0 0 0 1px rgba(120, 180, 255, 0.35),
    0 0 34px rgba(60, 130, 255, 0.35),
    inset 0 0 22px rgba(180, 215, 255, 0.2);
  transition: transform 0.08s linear, box-shadow 0.08s linear;
  will-change: transform;
}

.core-field {
  position: absolute;
  inset: -30%;
  background: conic-gradient(
    from 180deg,
    transparent 0deg,
    rgba(120, 180, 255, 0.2) 70deg,
    transparent 140deg,
    rgba(70, 140, 255, 0.12) 230deg,
    transparent 300deg
  );
  animation: field-drift 18s linear infinite;
  opacity: 0.6;
  will-change: transform;
}

.core-dot {
  position: absolute;
  inset: 36%;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, #f2f7ff 0%, #8ec0ff 42%, #2a5fbf 100%);
  box-shadow: 0 0 20px rgba(110, 180, 255, 0.65);
  opacity: 0.95;
  transition: transform 0.08s linear, box-shadow 0.08s linear;
  will-change: transform;
}

/* Idle — soft breath */
.core[data-state="idle"] .core-glow {
  animation-duration: 5.2s;
}

.core[data-state="idle"] .core-wave-a {
  opacity: 0.28;
  transform: scale(1.08);
  animation: wave-idle 5.2s ease-in-out infinite;
}

/* Listening — mic-reactive rings */
.core[data-state="listening"] .core-glow {
  animation: none;
  opacity: calc(0.75 + var(--core-level) * 0.5);
  transform: scale(calc(1 + var(--core-level) * 0.16));
}

.core[data-state="listening"] .core-orb {
  transform: scale(calc(1 + var(--core-level) * 0.09));
  box-shadow:
    0 0 0 1px rgba(140, 190, 255, calc(0.35 + var(--core-level) * 0.4)),
    0 0 calc(28px + var(--core-level) * 40px) rgba(70, 140, 255, calc(0.3 + var(--core-level) * 0.45)),
    inset 0 0 22px rgba(180, 215, 255, 0.22);
}

.core[data-state="listening"] .core-wave-a,
.core[data-state="listening"] .core-wave-b {
  opacity: calc(0.3 + var(--core-level) * 0.5);
  transform: scale(calc(1.1 + var(--core-level) * 0.32));
  border-color: rgba(120, 180, 255, calc(0.25 + var(--core-level) * 0.45));
}

.core[data-state="listening"] .core-wave-b {
  transform: scale(calc(1.26 + var(--core-level) * 0.4));
  opacity: calc(0.14 + var(--core-level) * 0.32);
}

/* Thinking — travelling field */
.core[data-state="thinking"] .core-field {
  animation-duration: 3.8s;
  opacity: 0.95;
}

.core[data-state="thinking"] .core-wave-a {
  opacity: 0.5;
  animation: wave-think 2s ease-in-out infinite;
}

.core[data-state="thinking"] .core-wave-b {
  opacity: 0.32;
  animation: wave-think 2s ease-in-out infinite 0.35s;
}

.core[data-state="thinking"] .core-glow {
  animation: glow-think 2.2s ease-in-out infinite;
}

/*
 * Speaking — core + halo pulse hard with --core-level.
 * Driven by Realtime speech events (and analyser when available).
 */
.core[data-state="speaking"] .core-glow {
  animation: none;
  opacity: calc(0.7 + var(--core-level) * 0.7);
  transform: scale(calc(1.05 + var(--core-level) * 0.55));
  background: radial-gradient(
    circle,
    rgba(90, 160, 255, calc(0.22 + var(--core-level) * 0.55)) 0%,
    rgba(40, 110, 240, calc(0.1 + var(--core-level) * 0.2)) 46%,
    transparent 72%
  );
}

.core[data-state="speaking"] .core-orb {
  transform: scale(calc(1 + var(--core-level) * 0.28));
  box-shadow:
    0 0 0 1px rgba(160, 205, 255, calc(0.4 + var(--core-level) * 0.55)),
    0 0 calc(36px + var(--core-level) * 70px) rgba(70, 150, 255, calc(0.4 + var(--core-level) * 0.6)),
    inset 0 0 28px rgba(200, 230, 255, 0.3);
}

.core[data-state="speaking"] .core-dot {
  transform: scale(calc(1 + var(--core-level) * 0.38));
  box-shadow: 0 0 calc(18px + var(--core-level) * 40px) rgba(140, 200, 255, calc(0.55 + var(--core-level) * 0.55));
  background: radial-gradient(circle at 40% 35%, #ffffff 0%, #9fd0ff 40%, #3a7dff 100%);
}

.core[data-state="speaking"] .core-wave-a {
  opacity: calc(0.4 + var(--core-level) * 0.6);
  transform: scale(calc(1.15 + var(--core-level) * 0.7));
  border-color: rgba(140, 195, 255, calc(0.3 + var(--core-level) * 0.6));
  box-shadow: 0 0 calc(10px + var(--core-level) * 28px) rgba(70, 150, 255, calc(0.2 + var(--core-level) * 0.45));
}

.core[data-state="speaking"] .core-wave-b {
  opacity: calc(0.28 + var(--core-level) * 0.5);
  transform: scale(calc(1.35 + var(--core-level) * 0.85));
  border-color: rgba(100, 170, 255, calc(0.2 + var(--core-level) * 0.45));
}

.core[data-state="speaking"] .core-wave-c {
  opacity: calc(0.14 + var(--core-level) * 0.4);
  transform: scale(calc(1.55 + var(--core-level) * 1));
  border-color: rgba(80, 150, 255, calc(0.12 + var(--core-level) * 0.35));
}

.core[data-state="speaking"] .core-field {
  opacity: calc(0.65 + var(--core-level) * 0.45);
  animation-duration: 5s;
}

.remote-audio {
  position: absolute;
  width: 0;
  height: 0;
  opacity: 0;
  pointer-events: none;
}

.transcript {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.25rem;
  display: grid;
  gap: 0.35rem;
  max-width: 22rem;
  margin: 0 auto;
  padding: 0 0.5rem;
  text-align: center;
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.transcript[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.transcript-user,
.transcript-martha {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.35;
  overflow: hidden;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  -webkit-user-select: text;
  user-select: text;
}

.transcript-user {
  color: var(--muted);
  font-weight: 300;
}

.transcript-martha {
  color: rgba(220, 235, 255, 0.92);
  font-weight: 400;
}

.compose {
  display: flex;
  gap: 0.45rem;
  width: 100%;
  min-width: 0;
  max-width: 26rem;
  margin: 0 auto;
}

.compose input,
.compose button {
  touch-action: manipulation;
}

.compose input {
  flex: 1 1 auto;
  min-width: 0;
  width: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(8, 16, 32, 0.82);
  color: var(--fg);
  padding: 0.7rem 0.95rem;
  font: inherit;
  font-size: 16px;
  font-weight: 300;
  backdrop-filter: blur(8px);
}

.compose input::placeholder {
  color: rgba(170, 195, 235, 0.35);
}

.compose input:focus {
  outline: 1px solid rgba(100, 160, 255, 0.5);
  border-color: rgba(100, 160, 255, 0.35);
}

.compose button {
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(180deg, #b6d4ff, #6ea8ff);
  color: #071018;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  padding: 0 1rem;
  white-space: nowrap;
}

.install {
  margin: 0;
  min-width: 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.62rem;
  line-height: 1.3;
  letter-spacing: 0.04em;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes glow-breathe {
  0%,
  100% {
    transform: scale(0.96);
    opacity: 0.55;
  }
  50% {
    transform: scale(1.06);
    opacity: 0.92;
  }
}

@keyframes field-drift {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes wave-idle {
  0%,
  100% {
    transform: scale(1.04);
    opacity: 0.2;
  }
  50% {
    transform: scale(1.16);
    opacity: 0.38;
  }
}

@keyframes wave-think {
  0% {
    transform: scale(0.95);
    opacity: 0.1;
  }
  45% {
    opacity: 0.5;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}

@keyframes glow-think {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.6;
  }
  50% {
    transform: scale(1.12);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .core-glow,
  .core-field,
  .core-wave {
    animation: none !important;
  }
}

@media (min-width: 480px) {
  :root {
    --core-size: min(72vw, 26rem);
  }
}

.sheet {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: end center;
  padding:
    calc(env(safe-area-inset-top, 0px) + 1rem)
    1rem
    calc(env(safe-area-inset-bottom, 0px) + 1rem);
  background: rgba(2, 6, 16, 0.62);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.sheet[hidden] {
  display: none !important;
}

.sheet-card {
  width: min(100%, 26rem);
  padding: 1.25rem 1.2rem 1.1rem;
  border: 1px solid rgba(140, 180, 255, 0.14);
  border-radius: 1.15rem;
  background:
    linear-gradient(180deg, rgba(18, 32, 58, 0.96), rgba(8, 14, 28, 0.98));
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  color: var(--fg);
}

.sheet-card h2 {
  margin: 0 0 0.55rem;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.sheet-card p {
  margin: 0 0 1rem;
  color: rgba(190, 210, 240, 0.72);
  font-size: 0.95rem;
  line-height: 1.45;
}

.sheet-note {
  color: rgba(160, 190, 230, 0.55) !important;
  font-size: 0.82rem !important;
}

.sheet-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.75rem;
}

.sheet-close {
  appearance: none;
  border: 0;
  background: transparent;
  color: rgba(190, 210, 240, 0.55);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 0;
}

.sheet-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.sheet-btn {
  appearance: none;
  border: 1px solid rgba(140, 180, 255, 0.18);
  border-radius: 999px;
  padding: 0.78rem 0.9rem;
  font: inherit;
  font-size: 0.92rem;
  font-weight: 400;
  cursor: pointer;
}

.sheet-btn-primary {
  background: rgba(90, 140, 230, 0.28);
  color: rgba(230, 240, 255, 0.96);
  border-color: rgba(130, 175, 255, 0.35);
}

.sheet-btn-secondary {
  background: transparent;
  color: rgba(190, 210, 240, 0.78);
}

.sheet-link {
  appearance: none;
  display: block;
  width: 100%;
  margin-top: 0.85rem;
  border: 0;
  background: transparent;
  color: rgba(150, 185, 235, 0.7);
  font: inherit;
  font-size: 0.85rem;
  text-align: center;
  cursor: pointer;
  padding: 0.35rem;
}