:root {
  --bg: #efe4d4;
  --bg-deep: #172624;
  --paper: rgba(249, 241, 229, 0.8);
  --panel: rgba(255, 248, 240, 0.52);
  --panel-strong: rgba(255, 248, 240, 0.72);
  --line: rgba(33, 47, 45, 0.12);
  --line-strong: rgba(33, 47, 45, 0.24);
  --ink: #192927;
  --muted: #61706b;
  --accent: #cd6a30;
  --accent-strong: #9e3d18;
  --accent-soft: #efbc65;
  --signal: #2e7067;
  --user: linear-gradient(135deg, #1a4743 0%, #113330 100%);
  --ai: linear-gradient(180deg, rgba(255, 246, 236, 0.92), rgba(250, 235, 216, 0.82));
  --shadow-lg: 0 30px 90px rgba(48, 24, 11, 0.18);
  --shadow-md: 0 18px 46px rgba(31, 24, 18, 0.1);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Space Grotesk', 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
}

body {
  margin: 0;
  position: relative;
  overflow-x: hidden;
  font-family: var(--font-sans);
  color: var(--ink);
  background:
    radial-gradient(circle at 14% 16%, rgba(239, 188, 101, 0.7), transparent 22%),
    radial-gradient(circle at 88% 18%, rgba(46, 112, 103, 0.18), transparent 18%),
    linear-gradient(135deg, #f6efe4 0%, #e9d1b6 38%, #ca6935 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(0deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.05)),
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 57px,
      rgba(255, 255, 255, 0.06) 58px,
      transparent 59px
    );
  opacity: 0.38;
}

body::after {
  background:
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.24), transparent 18%),
    radial-gradient(circle at 78% 76%, rgba(255, 255, 255, 0.16), transparent 20%);
}

.page-aura {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.aura {
  position: absolute;
  border-radius: 50%;
  filter: blur(8px);
}

.aura-west {
  width: 28rem;
  height: 28rem;
  left: -8rem;
  top: 12vh;
  background: radial-gradient(circle, rgba(239, 188, 101, 0.32), transparent 66%);
}

.aura-east {
  width: 24rem;
  height: 24rem;
  right: -6rem;
  bottom: 8vh;
  background: radial-gradient(circle, rgba(19, 69, 64, 0.24), transparent 64%);
}

.grid-haze {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at center, black 40%, transparent 88%);
  opacity: 0.32;
}

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  gap: 24px;
  padding: 24px;
}

.identity-rail,
.chat-shell {
  position: relative;
  backdrop-filter: blur(22px);
  border: 1px solid rgba(255, 255, 255, 0.24);
  box-shadow: var(--shadow-lg);
}

.identity-rail {
  display: grid;
  align-content: start;
  gap: 16px;
  padding: 22px;
  border-radius: var(--radius-xl);
  color: #f4eadf;
  background:
    linear-gradient(180deg, rgba(11, 29, 28, 0.92), rgba(69, 26, 18, 0.94)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), transparent 55%);
}

.identity-rail::after {
  content: "";
  position: absolute;
  inset: 18px;
  border-radius: calc(var(--radius-xl) - 10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.identity-card,
.status-card,
.session-card,
.signal-card {
  position: relative;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.identity-mark {
  width: 62px;
  height: 62px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  border-radius: 20px;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.34), transparent 34%),
    linear-gradient(135deg, var(--accent-soft), var(--accent));
  color: #102120;
  font-family: var(--font-serif);
  font-size: 2.1rem;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.identity-card h1,
.chat-header h2,
.settings-head h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.1rem, 2.9vw, 3.35rem);
  line-height: 0.92;
  letter-spacing: -0.02em;
}

.identity-kicker,
.section-label,
.meta-label {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  opacity: 0.7;
}

.identity-copy,
.chat-subtitle,
.signal-copy {
  margin: 14px 0 0;
  line-height: 1.6;
  color: inherit;
  opacity: 0.9;
}

.surface-list {
  list-style: none;
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
}

.surface-item,
.session-card dl div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.surface-item:last-child,
.session-card dl div:last-child {
  border-bottom: 0;
}

.surface-item strong {
  color: var(--accent-soft);
  font-size: 0.82rem;
}

.surface-item.is-live strong {
  color: #c8f4d9;
}

.session-card dl {
  margin: 0;
}

.session-card dt,
.session-card dd {
  margin: 0;
}

.chat-shell {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 18px;
  padding: 22px;
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 248, 239, 0.72), rgba(249, 240, 229, 0.58)),
    linear-gradient(135deg, rgba(255, 255, 255, 0.22), transparent 58%);
}

.telemetry-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.telemetry-item,
.chat-meta > div,
.composer,
.settings-form {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-md);
}

.telemetry-item {
  padding: 14px 16px;
  border-radius: var(--radius-md);
}

.chat-header {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: start;
}

.header-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.primary-button,
.ghost-button {
  position: relative;
  border-radius: 999px;
  padding: 12px 18px;
  border: 1px solid transparent;
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease;
}

.primary-button {
  background: linear-gradient(135deg, var(--accent-soft), var(--accent));
  color: #1c221d;
  font-weight: 700;
  box-shadow: 0 10px 24px rgba(205, 106, 48, 0.22);
}

.ghost-button {
  background: var(--panel-strong);
  color: var(--ink);
  border-color: var(--line);
}

.primary-button:hover,
.ghost-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(20, 27, 26, 0.12);
}

.chat-panel {
  min-height: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
}

.chat-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.chat-meta > div {
  padding: 14px 16px;
  border-radius: var(--radius-md);
}

.chat-stage {
  position: relative;
  min-height: 0;
  overflow: hidden;
  display: grid;
  padding: 18px;
  border-radius: 28px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background:
    linear-gradient(180deg, rgba(255, 252, 247, 0.48), rgba(255, 246, 236, 0.36)),
    radial-gradient(circle at top right, rgba(205, 106, 48, 0.08), transparent 28%);
}

.stage-chassis {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.8;
}

.stage-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(205, 106, 48, 0.12);
}

.stage-ring-a {
  width: 26rem;
  height: 26rem;
  right: -8rem;
  top: -10rem;
}

.stage-ring-b {
  width: 18rem;
  height: 18rem;
  left: -7rem;
  bottom: -7rem;
  border-color: rgba(46, 112, 103, 0.12);
}

.chat-window {
  position: relative;
  z-index: 1;
  min-height: 0;
  overflow-y: auto;
  display: grid;
  gap: 16px;
  padding-right: 6px;
}

.message {
  max-width: min(760px, 92%);
  display: grid;
  gap: 6px;
}

.message-user {
  margin-left: auto;
}

.message-role {
  padding-inline: 8px;
  font-size: 0.76rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.message-body {
  padding: 18px 20px;
  border-radius: 22px;
  border: 1px solid var(--line);
  box-shadow: 0 16px 36px rgba(23, 52, 49, 0.06);
}

.message-ai .message-body {
  background: var(--ai);
}

.message-user .message-body {
  background: var(--user);
  color: #f7efe2;
  border-color: rgba(255, 255, 255, 0.06);
}

.message-body p {
  margin: 0;
  white-space: pre-wrap;
  line-height: 1.65;
}

.composer {
  display: grid;
  gap: 12px;
  padding: 16px;
  border-radius: var(--radius-lg);
}

#message-input,
.settings-form input {
  width: 100%;
  min-height: 72px;
  border: 1px solid transparent;
  outline: none;
  background: rgba(255, 255, 255, 0.62);
  color: var(--ink);
  border-radius: 16px;
  padding: 14px 16px;
  resize: none;
  line-height: 1.55;
  transition: border-color 0.2s ease, background 0.2s ease;
}

#message-input:focus,
.settings-form input:focus {
  border-color: rgba(205, 106, 48, 0.4);
  background: rgba(255, 255, 255, 0.78);
}

.composer-actions,
.settings-actions,
.settings-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.composer-actions {
  flex-wrap: wrap;
}

.composer-hint {
  color: var(--muted);
  font-size: 0.88rem;
}

.settings-dialog {
  width: min(560px, calc(100vw - 32px));
  border: 0;
  padding: 0;
  background: transparent;
}

.settings-dialog::backdrop {
  background: rgba(10, 14, 13, 0.38);
  backdrop-filter: blur(8px);
}

.settings-form {
  display: grid;
  gap: 16px;
  padding: 24px;
  border-radius: 30px;
}

.settings-form label {
  display: grid;
  gap: 8px;
}

.settings-form span {
  font-size: 0.92rem;
  color: var(--muted);
}

textarea::placeholder,
input::placeholder {
  color: #7c8680;
}

textarea:disabled,
button:disabled,
input:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .identity-rail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .identity-card {
    grid-column: 1 / -1;
  }
}

@media (max-width: 720px) {
  .app-shell {
    padding: 14px;
    gap: 14px;
  }

  .identity-rail,
  .chat-shell {
    padding: 16px;
    border-radius: 24px;
  }

  .identity-rail {
    grid-template-columns: 1fr;
  }

  .telemetry-strip,
  .chat-meta {
    grid-template-columns: 1fr;
  }

  .chat-header,
  .settings-head,
  .settings-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .message {
    max-width: 100%;
  }

  .primary-button,
  .ghost-button {
    width: 100%;
    justify-content: center;
  }
}