:root {
  --bg: #081011;
  --bg-soft: #10181a;
  --panel: rgba(12, 19, 21, 0.88);
  --line: rgba(138, 176, 170, 0.18);
  --line-strong: rgba(138, 176, 170, 0.32);
  --text: #edf5ef;
  --muted: #93a7a2;
  --accent: #8fe3c2;
  --accent-strong: #ccf6a9;
  --mono: 'IBM Plex Mono', monospace;
  --sans: 'Space Grotesk', system-ui, sans-serif;
  --shadow: 0 36px 120px rgba(0, 0, 0, 0.36);
}

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

.agentlab-body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(82, 168, 138, 0.16), transparent 28%),
    radial-gradient(circle at top right, rgba(70, 130, 180, 0.16), transparent 28%),
    linear-gradient(180deg, #071012 0%, #0b1113 100%);
  font-family: var(--sans);
}

.lab-ambient {
  position: fixed;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.lab-grid {
  position: absolute;
  inset: auto -10vw -18vh -10vw;
  height: 70vh;
  background-image:
    linear-gradient(rgba(143, 227, 194, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(143, 227, 194, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  transform: perspective(620px) rotateX(66deg);
  transform-origin: bottom center;
  mask-image: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent 85%);
}

.lab-orb {
  position: absolute;
  border-radius: 999px;
  filter: blur(90px);
  opacity: 0.45;
}

.orb-a {
  width: 28rem;
  height: 18rem;
  top: -4rem;
  left: -4rem;
  background: rgba(143, 227, 194, 0.18);
}

.orb-b {
  width: 24rem;
  height: 18rem;
  top: 8rem;
  right: -6rem;
  background: rgba(110, 168, 255, 0.16);
}

.lab-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1.6rem;
  padding: 0.95rem 1.45rem;
  background: rgba(6, 10, 11, 0.74);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(143, 227, 194, 0.12);
}

.lab-brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.lab-nav-links {
  display: flex;
  gap: 1.15rem;
}

.lab-nav-links a {
  color: rgba(237, 245, 239, 0.68);
  text-decoration: none;
  font-size: 0.92rem;
}

.lab-nav-links a.active,
.lab-nav-links a:hover {
  color: var(--text);
}

.auth-menu {
  margin-left: auto;
}

.lab-shell {
  position: relative;
  z-index: 1;
  min-height: calc(100vh - 72px);
  display: grid;
  place-items: center;
  padding: 1.2rem;
}

.chat-panel {
  width: min(100%, 980px);
  min-height: calc(100vh - 112px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  border-radius: 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.chat-hero {
  padding: 1.3rem 1.3rem 1rem;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 0.35rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.chat-hero h1 {
  margin: 0;
  font-size: clamp(1.7rem, 3.4vw, 3.3rem);
  line-height: 0.95;
}

.hero-copy {
  margin: 0.8rem 0 0;
  max-width: 56ch;
  color: var(--muted);
}

.hero-meta,
.model-rail,
.composer-foot,
.composer-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.hero-meta {
  margin-top: 0.95rem;
}

.meta-pill,
.model-btn,
.ghost-btn,
.send-btn {
  border-radius: 999px;
  border: 1px solid var(--line);
  font-family: var(--sans);
}

.meta-pill {
  padding: 0.42rem 0.7rem;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.model-rail {
  margin-top: 0.9rem;
}

.model-btn {
  padding: 0.5rem 0.82rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  cursor: pointer;
}

.model-btn.active {
  color: #07140f;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  border-color: transparent;
}

.chat-feed {
  padding: 1.15rem 1.3rem;
  overflow: auto;
  display: flex;
  flex-direction: column;
  gap: 0.95rem;
}

.msg {
  max-width: min(82%, 46rem);
  padding: 0.95rem 1rem;
  border-radius: 1.1rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.msg.user {
  align-self: flex-end;
  background: rgba(143, 227, 194, 0.08);
  border-color: rgba(143, 227, 194, 0.22);
}

.msg.assistant {
  align-self: flex-start;
}

.msg.system {
  align-self: center;
  max-width: 42rem;
  background: rgba(110, 168, 255, 0.08);
  border-color: rgba(110, 168, 255, 0.18);
}

.msg-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.55rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.74rem;
}

.msg-body {
  line-height: 1.58;
}

.msg-body p:first-child {
  margin-top: 0;
}

.msg-body p:last-child {
  margin-bottom: 0;
}

.chat-composer {
  padding: 1rem 1.3rem 1.25rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.85rem;
}

.field-block {
  display: grid;
  gap: 0.35rem;
}

.field-block span,
.composer-status {
  color: var(--muted);
  font-size: 0.84rem;
}

.field-block textarea,
#chatInput {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.035);
  color: var(--text);
  font: inherit;
  padding: 0.82rem 0.9rem;
  resize: vertical;
}

.field-block textarea:focus,
#chatInput:focus {
  outline: none;
  border-color: rgba(143, 227, 194, 0.54);
  box-shadow: 0 0 0 3px rgba(143, 227, 194, 0.12);
}

.composer-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.8rem;
  align-items: end;
}

.send-btn,
.ghost-btn {
  cursor: pointer;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.send-btn {
  padding: 0.85rem 1.05rem;
  color: #07140f;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  border-color: transparent;
  font-weight: 700;
}

.ghost-btn {
  padding: 0.55rem 0.82rem;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.send-btn:hover,
.ghost-btn:hover,
.model-btn:hover {
  transform: translateY(-1px);
}

@media (max-width: 760px) {
  .lab-shell {
    padding: 0.75rem;
  }

  .lab-nav {
    flex-wrap: wrap;
    gap: 0.85rem;
  }

  .lab-nav-links {
    order: 3;
    width: 100%;
    overflow: auto;
  }

  .chat-panel {
    min-height: calc(100vh - 92px);
  }

  .composer-row {
    grid-template-columns: 1fr;
  }

  .msg {
    max-width: 100%;
  }
}