:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #121a30;
  --panel-2: #1a2340;
  --text: #eef2ff;
  --muted: #9aa7c7;
  --accent: #6ea8fe;
  --accent-2: #86efac;
  --border: rgba(255,255,255,0.08);
  --danger: #fca5a5;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body {
  height: 100%;
  overflow: hidden;
}
body {
  margin: 0;
  background: linear-gradient(180deg, #08101d 0%, #0f172a 100%);
  color: var(--text);
}
.sidebar-toggle {
  position: fixed;
  left: 14px;
  top: 14px;
  z-index: 40;
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(110, 168, 254, 0.3);
  background: rgba(12, 18, 34, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 30px rgba(0,0,0,0.28);
}
.sidebar-toggle-icon {
  display: inline-block;
  transition: transform 180ms ease;
}
body.sidebar-open .sidebar-toggle-icon {
  transform: rotate(180deg);
}
.sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 6, 23, 0.54);
  backdrop-filter: blur(3px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 20;
}
body.sidebar-open .sidebar-overlay {
  opacity: 1;
  pointer-events: auto;
}
.voice-modal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 20px;
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
  z-index: 60;
}
body.voice-open .voice-modal {
  opacity: 1;
  pointer-events: auto;
}
.voice-modal-card {
  width: min(760px, 100%);
  min-height: min(82vh, 760px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 20px;
  padding: 24px;
  border-radius: 28px;
  border: 1px solid rgba(255,255,255,0.08);
  background: radial-gradient(circle at top, rgba(59,130,246,0.16), transparent 40%), linear-gradient(180deg, #11192f 0%, #0b1327 100%);
  box-shadow: 0 30px 80px rgba(0,0,0,0.45);
}
.voice-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.voice-visualizer-wrap {
  display: grid;
  place-items: center;
  gap: 26px;
}
.voice-visualizer {
  width: min(360px, 75vw);
  height: min(360px, 75vw);
  border-radius: 999px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle, rgba(110,168,254,0.22) 0%, rgba(110,168,254,0.07) 38%, rgba(255,255,255,0.02) 70%, transparent 72%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.05), 0 0 80px rgba(59,130,246,0.18);
  overflow: hidden;
}
.voice-visualizer::before {
  content: '';
  position: absolute;
  inset: 18%;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(110,168,254,0.35), rgba(110,168,254,0.08) 58%, transparent 72%);
  transform: scale(var(--voice-pulse, 0.95));
  transition: transform 120ms linear;
}
.voice-visualizer-bar {
  position: absolute;
  bottom: 50%;
  left: 50%;
  width: 10px;
  height: calc(38px + var(--bar-scale, 0.2) * 90px);
  border-radius: 999px;
  background: linear-gradient(180deg, rgba(134,239,172,0.95), rgba(110,168,254,0.95));
  transform-origin: center bottom;
  opacity: 0.92;
  box-shadow: 0 0 18px rgba(110,168,254,0.24);
}
.voice-record-btn {
  min-width: 200px;
  min-height: 58px;
  border-radius: 999px;
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 18px 40px rgba(37,99,235,0.28);
}
.voice-status-stack {
  display: grid;
  gap: 12px;
}
.voice-status,
.voice-transcript {
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
}
.voice-status {
  color: var(--accent-2);
  font-weight: 600;
}
.voice-transcript {
  color: var(--muted);
  min-height: 88px;
  white-space: pre-wrap;
  line-height: 1.45;
}
.app-shell {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 100vh;
  overflow: hidden;
}
.sidebar, .main-pane { min-height: 0; }
.sidebar {
  height: 100vh;
  overflow-y: auto;
  padding: 20px;
  border-right: 1px solid var(--border);
  background: rgba(9, 14, 28, 0.88);
}
.brand, .topbar, .composer, .sidebar-block {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 18px;
}
.brand {
  padding: 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sidebar-block { margin-top: 16px; padding: 16px; }
.sidebar-title { font-size: 0.82rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 12px; }
.eyebrow { margin: 0; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.72rem; }
h1, h2, p { margin: 0; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }
.session-list { display: grid; gap: 10px; }
.active-session-card {
  padding: 14px;
  border-radius: 14px;
  background: linear-gradient(180deg, rgba(110, 168, 254, 0.16) 0%, rgba(110, 168, 254, 0.08) 100%);
  border: 1px solid rgba(110, 168, 254, 0.25);
  line-height: 1.45;
}
.active-session-card strong {
  display: block;
  margin-bottom: 6px;
}
.active-session-card small {
  display: block;
  color: var(--muted);
}
.session-card {
  padding: 12px;
  border-radius: 14px;
  background: var(--panel-2);
  border: 1px solid transparent;
  cursor: pointer;
}
.session-card.active { border-color: var(--accent); }
.session-card small { color: var(--muted); display: block; margin-top: 6px; }
.main-pane {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 16px;
  height: 100vh;
  min-height: 0;
  overflow: hidden;
  padding: 20px;
}
.topbar, .composer { padding: 16px 18px; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
}
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.messages {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  display: grid;
  align-content: start;
  gap: 12px;
  padding-right: 6px;
}
.message {
  max-width: min(880px, 95%);
  border-radius: 18px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  background: var(--panel);
}
.message.user {
  margin-left: auto;
  background: rgba(110, 168, 254, 0.14);
}
.message.assistant { margin-right: auto; }
.message-role {
  color: var(--muted);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.message-content { white-space: pre-wrap; line-height: 1.5; }
.composer-row {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
}
.helper-row {
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
  font-size: 0.84rem;
  flex-wrap: wrap;
}
input, select, button {
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #0f172a;
  color: var(--text);
  padding: 12px 14px;
  font: inherit;
}
input { width: 100%; }
button { cursor: pointer; }
.primary-btn {
  background: linear-gradient(180deg, #3b82f6 0%, #2563eb 100%);
  border-color: transparent;
}
.ghost-btn:hover, .primary-btn:hover { filter: brightness(1.08); }
.feature-list { margin: 0; padding-left: 18px; color: var(--muted); display: grid; gap: 8px; }
.status-pill {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(134, 239, 172, 0.12);
  color: var(--accent-2);
  border: 1px solid rgba(134, 239, 172, 0.25);
}
code {
  background: rgba(255,255,255,0.08);
  padding: 3px 6px;
  border-radius: 6px;
}
@media (max-width: 1100px) {
  .sidebar-toggle {
    display: inline-flex;
  }
  .app-shell {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(320px, 86vw);
    z-index: 30;
    transform: translateX(-110%);
    transition: transform 180ms ease;
    border-right: 1px solid var(--border);
    border-bottom: 0;
    box-shadow: 0 18px 60px rgba(0,0,0,0.4);
  }
  body.sidebar-open .sidebar {
    transform: translateX(0);
  }
  .main-pane {
    padding-left: 72px;
  }
}

@media (max-width: 900px) {
  html, body {
    overflow: hidden;
  }
  .main-pane {
    padding: 72px 14px 14px;
    height: 100vh;
  }
  .topbar {
    align-items: stretch;
    flex-direction: column;
  }
  .toolbar {
    width: 100%;
  }
  .toolbar > * {
    flex: 1 1 auto;
  }
  .composer-row {
    grid-template-columns: 1fr;
  }
  .voice-modal {
    padding: 10px;
  }
  .voice-modal-card {
    min-height: calc(100vh - 20px);
    border-radius: 22px;
    padding: 18px;
  }
  .voice-visualizer {
    width: min(300px, 82vw);
    height: min(300px, 82vw);
  }
}