* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --bg: #120d11;
  --bg-deep: #080608;
  --panel: linear-gradient(180deg, rgba(42, 33, 37, 0.9), rgba(26, 20, 23, 0.94));
  --panel-strong: linear-gradient(180deg, rgba(50, 40, 44, 0.97), rgba(29, 22, 25, 0.99));
  --panel-soft: rgba(24, 18, 21, 0.78);
  --panel-interactive: rgba(45, 35, 33, 0.78);
  --border: rgba(185, 154, 99, 0.16);
  --border-strong: rgba(210, 178, 122, 0.3);
  --text: #f3ede6;
  --muted: #a89a8e;
  --muted-strong: #cab9ab;
  --accent: #b99a63;
  --accent-strong: #d2b27a;
  --accent-wash: rgba(185, 154, 99, 0.16);
  --success: #93a48d;
  --warning: #c39a62;
  --shadow: 0 32px 80px rgba(0, 0, 0, 0.42);
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --radius-card: 1.5rem;
  --radius-pill: 999px;
  --transition-fast: 160ms ease;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(120, 43, 57, 0.18), transparent 26%),
    radial-gradient(circle at top right, rgba(131, 102, 63, 0.14), transparent 24%),
    radial-gradient(circle at bottom center, rgba(71, 43, 58, 0.16), transparent 32%),
    linear-gradient(180deg, #171115 0%, var(--bg) 34%, var(--bg-deep) 100%);
  color: var(--text);
}

button,
input,
textarea,
pre {
  font: inherit;
}

.shell {
  width: min(100%, 72rem);
  margin: 0 auto;
  padding: var(--space-5) var(--space-3) var(--space-6);
  display: grid;
  gap: var(--space-4);
}

.shell-topbar,
.hero-shell,
.shell-lower {
  display: grid;
  gap: var(--space-3);
}

.quiet-panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  backdrop-filter: blur(18px);
  box-shadow:
    inset 0 1px 0 rgba(255, 245, 232, 0.04),
    var(--shadow);
}

.invite-gate {
  padding: var(--space-3) var(--space-4);
  display: grid;
  gap: var(--space-3);
}

.invite-gate__copy,
.hero-copy,
.answer-copy {
  display: grid;
  gap: var(--space-2);
}

.shell-label,
.eyebrow,
.section-kicker,
.voice-indicator__label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.75rem;
  color: var(--accent);
}

.shell-copy,
.hero-text,
.voice-support,
.feedback-anchor {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.shell-utility-nav,
.hero-actions,
.voice-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
}

.shell-utility-nav {
  justify-content: flex-end;
}

.invite-gate__action,
.utility-button,
.hero-button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--panel-interactive);
  color: var(--text);
  padding: 0.95rem 1.2rem;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 245, 232, 0.04);
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.hero-button {
  background: linear-gradient(180deg, rgba(71, 56, 42, 0.92), rgba(49, 38, 35, 0.94));
  border-color: rgba(210, 178, 122, 0.28);
  box-shadow:
    inset 0 1px 0 rgba(255, 241, 214, 0.08),
    0 16px 40px rgba(0, 0, 0, 0.24);
  font-weight: 600;
}

.invite-gate__action:hover,
.invite-gate__action:focus-visible,
.utility-button:hover,
.utility-button:focus-visible,
.hero-button:hover,
.hero-button:focus-visible {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: rgba(40, 31, 35, 0.94);
  outline: none;
}

.hero-button:hover,
.hero-button:focus-visible {
  background: linear-gradient(180deg, rgba(83, 66, 49, 0.94), rgba(57, 45, 40, 0.96));
}

.hero-copy {
  padding: var(--space-5) var(--space-4) var(--space-2);
}

.hero-copy h1,
.answer-copy h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  line-height: 0.96;
  letter-spacing: -0.04em;
}

.hero-copy h1 {
  font-size: clamp(2.7rem, 7vw, 5rem);
  max-width: 10ch;
}

.answer-copy h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.voice-state-panel {
  padding: var(--space-3);
}

.conversation-stage {
  display: grid;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: calc(var(--radius-card) - 0.25rem);
  border: 1px solid rgba(185, 154, 99, 0.14);
  background: var(--panel-soft);
}

.voice-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  width: fit-content;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-pill);
  background: rgba(33, 26, 29, 0.88);
  border: 1px solid var(--border);
}

.voice-indicator__pulse {
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(185, 154, 99, 0.42);
  animation: pulse-idle 2.4s infinite;
}

#voice-state-label {
  display: block;
  font-size: 1rem;
}

.stage-chip,
.live-data-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(202, 185, 171, 0.14);
  background: rgba(243, 237, 230, 0.04);
  color: var(--text);
  font-size: 0.86rem;
}

.transcript-minimal,
.answer-card {
  padding: var(--space-3) var(--space-4);
  display: grid;
  gap: var(--space-3);
}

#transcript.transcript-hidden,
.transcript-send[hidden] {
  display: none;
}

#answer {
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: rgba(243, 237, 230, 0.92);
  white-space: pre-wrap;
  line-height: 1.7;
  min-height: 3.5rem;
}

.answer-card[data-filled="false"] #answer {
  color: #85776e;
}

.feedback-anchor {
  padding-top: var(--space-2);
  border-top: 1px solid rgba(185, 154, 99, 0.12);
  font-size: 0.92rem;
  position: relative;
}

.reply-tools {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.utility-button--small,
.surface-close,
.surface-ghost,
.surface-save {
  padding: 0.7rem 1rem;
  font-size: 0.92rem;
}

.support-note,
.surface-status,
.timeline-entry__body,
.field-label,
.feedback-reasons__legend {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.shell-surface {
  position: fixed;
  inset: 0;
  z-index: 20;
  padding: var(--space-4);
  background: rgba(8, 6, 8, 0.8);
  backdrop-filter: blur(18px);
  overflow-y: auto;
}

#timeline-surface,
#profile-surface {
  align-items: stretch;
}

.shell-surface[hidden],
.feedback-sheet[hidden] {
  display: none;
}

.shell-surface__panel {
  width: min(100%, 56rem);
  min-height: calc(100dvh - (2 * var(--space-4)));
  max-height: calc(100dvh - (2 * var(--space-4)));
  margin: 0 auto;
  padding: var(--space-4);
  display: grid;
  align-content: start;
  gap: var(--space-3);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  background: var(--panel-strong);
  box-shadow: var(--shadow);
  overflow-y: auto;
}

.shell-surface__panel--narrow {
  width: min(100%, 42rem);
}

.shell-surface__topbar,
.feedback-sheet__topbar,
.surface-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.shell-surface__topbar {
  align-items: start;
}

.shell-surface__topbar h2,
.feedback-sheet__topbar h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

.shell-surface__copy {
  max-width: 38rem;
}

.timeline-list,
.profile-form,
.feedback-form {
  display: grid;
  gap: var(--space-3);
}

.timeline-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.timeline-entry {
  padding: var(--space-3);
  border-radius: calc(var(--radius-card) - 0.35rem);
  border: 1px solid rgba(185, 154, 99, 0.12);
  background: rgba(23, 18, 21, 0.76);
  display: grid;
  gap: var(--space-1);
}

.timeline-entry__meta {
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
}

.field-stack,
.toggle-field {
  display: grid;
  gap: var(--space-1);
}

.field-stack input,
.field-stack textarea,
.toggle-field {
  border: 1px solid rgba(202, 185, 171, 0.14);
  border-radius: 1rem;
  background: rgba(22, 17, 20, 0.82);
  color: var(--text);
}

.field-stack input,
.field-stack textarea {
  width: 100%;
  padding: 0.95rem 1rem;
}

.field-stack textarea {
  resize: vertical;
}

.toggle-field {
  grid-template-columns: auto 1fr;
  align-items: center;
  padding: 0.95rem 1rem;
}

.feedback-sheet {
  position: absolute;
  right: 0;
  bottom: calc(100% + var(--space-2));
  width: min(100%, 24rem);
}

.feedback-sheet__card {
  padding: var(--space-3);
  display: grid;
  gap: var(--space-3);
  border-radius: calc(var(--radius-card) - 0.35rem);
  border: 1px solid rgba(185, 154, 99, 0.14);
  background: linear-gradient(180deg, rgba(37, 29, 32, 0.97), rgba(24, 18, 21, 0.98));
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.32);
}

.feedback-reasons {
  padding: 0;
  margin: 0;
  border: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.reason-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.reason-pill input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

.reason-pill span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(202, 185, 171, 0.14);
  background: rgba(243, 237, 230, 0.05);
  color: var(--text);
  font-size: 0.88rem;
}

.reason-pill input:checked + span {
  border-color: rgba(210, 178, 122, 0.34);
  background: var(--accent-wash);
}

body[data-secondary-surface] {
  overflow: hidden;
}

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

body[data-voice-state="listening"] .voice-indicator,
body[data-voice-state="listening"] .hero-button {
  border-color: rgba(210, 178, 122, 0.48);
  background: rgba(58, 44, 40, 0.95);
}

body[data-voice-state="listening"] .voice-indicator__pulse {
  animation: pulse-listening 1s infinite;
}

body[data-voice-state="processing"] .voice-indicator {
  border-color: rgba(195, 154, 98, 0.42);
}

body[data-voice-state="processing"] .voice-indicator__pulse {
  background: var(--warning);
  animation: pulse-processing 0.9s infinite;
}

body[data-voice-state="speaking"] .voice-indicator,
body[data-voice-state="speaking"] .hero-button {
  border-color: rgba(147, 164, 141, 0.45);
}

body[data-voice-state="speaking"] .voice-indicator__pulse {
  background: var(--success);
  animation: pulse-speaking 0.85s infinite;
}

@keyframes pulse-idle {
  0% {
    box-shadow: 0 0 0 0 rgba(185, 154, 99, 0.26);
  }
  70% {
    box-shadow: 0 0 0 14px rgba(185, 154, 99, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(185, 154, 99, 0);
  }
}

@keyframes pulse-listening {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(185, 154, 99, 0.34);
  }
  70% {
    transform: scale(1.08);
    box-shadow: 0 0 0 18px rgba(185, 154, 99, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(185, 154, 99, 0);
  }
}

@keyframes pulse-processing {
  0%,
  100% {
    transform: scale(0.94);
    opacity: 0.9;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
}

@keyframes pulse-speaking {
  0%,
  100% {
    transform: scale(0.98);
    box-shadow: 0 0 0 0 rgba(147, 164, 141, 0.34);
  }
  50% {
    transform: scale(1.12);
    box-shadow: 0 0 0 16px rgba(147, 164, 141, 0);
  }
}

@media (min-width: 960px) {
  .shell-topbar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1.05fr) minmax(18rem, 0.95fr);
    align-items: center;
  }

  .shell-lower {
    grid-template-columns: minmax(16rem, 0.8fr) minmax(0, 1.2fr);
    align-items: start;
  }
}

@media (max-width: 720px) {
  .shell {
    padding: var(--space-4) var(--space-2) var(--space-5);
  }

  .invite-gate,
  .hero-copy,
  .voice-state-panel,
  .transcript-minimal,
  .answer-card,
  .shell-surface__panel {
    padding-left: var(--space-3);
    padding-right: var(--space-3);
  }

  .shell-surface {
    padding: var(--space-2);
  }

  .shell-surface__panel {
    min-height: calc(100dvh - (2 * var(--space-2)));
  }

  .hero-copy h1 {
    max-width: 12ch;
  }

  .shell-utility-nav {
    justify-content: flex-start;
  }

  .feedback-sheet {
    left: 0;
    width: 100%;
  }
}