:root {
  --ai-font: "Outfit", system-ui, sans-serif;
  --ai-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ai-bg: radial-gradient(920px 500px at 0% -6%, rgba(0, 196, 255, 0.22), transparent 70%),
           radial-gradient(900px 460px at 100% 0%, rgba(255, 130, 90, 0.18), transparent 66%),
           linear-gradient(180deg, #060a12 0%, #070d17 100%);
  --ai-card: rgba(10, 16, 28, 0.86);
  --ai-border: rgba(125, 168, 255, 0.24);
  --ai-border-strong: rgba(125, 168, 255, 0.42);
  --ai-text: #e8eefb;
  --ai-sub: #9caed3;
  --ai-good: #2ad39b;
  --ai-warn: #ffbf3f;
  --ai-run: #70d7ff;
  --ai-glow: rgba(70, 167, 255, 0.28);
}

body {
  font-family: var(--ai-font);
  color: var(--ai-text);
}

.ai-shell {
  min-height: 100vh;
  background: var(--ai-bg);
  padding-top: calc(var(--nav-h) + 34px);
  padding-bottom: 52px;
}

.ai-hero {
  text-align: center;
  margin-bottom: 28px;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--ai-border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--ai-sub);
  font-size: 12px;
  padding: 6px 12px;
}

.ai-hero h1 {
  margin-top: 15px;
  font-size: clamp(34px, 5.8vw, 64px);
  line-height: 1.04;
  letter-spacing: -1px;
}

.ai-hero p {
  max-width: 810px;
  margin: 14px auto 0;
  color: var(--ai-sub);
  font-size: 16px;
}

.hero-actions {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-metrics {
  margin-top: 20px;
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.hero-metrics div {
  min-width: 160px;
  border: 1px solid var(--ai-border);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  padding: 10px 12px;
}

.hero-metrics strong {
  display: block;
  font: 700 26px/1 var(--ai-mono);
}

.hero-metrics span {
  color: var(--ai-sub);
  font-size: 12px;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.span-5 { grid-column: span 5; }
.span-6 { grid-column: span 6; }
.span-7 { grid-column: span 7; }

.ai-card {
  border: 1px solid var(--ai-border);
  background: var(--ai-card);
  border-radius: 16px;
  padding: 16px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(10px);
}

.ai-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.ai-card h2 {
  font-size: 18px;
  letter-spacing: -0.2px;
}

.tag {
  border: 1px solid var(--ai-border);
  border-radius: 999px;
  font: 11px/1 var(--ai-mono);
  color: var(--ai-sub);
  padding: 5px 9px;
}

.chat-feed {
  border: 1px solid var(--ai-border);
  border-radius: 12px;
  background: rgba(6, 10, 18, 0.72);
  padding: 12px;
  min-height: 232px;
  max-height: 312px;
  overflow-y: auto;
}

.msg {
  width: fit-content;
  max-width: 96%;
  margin-bottom: 9px;
  padding: 8px 11px;
  border-radius: 10px;
  font-size: 13px;
  line-height: 1.5;
}

.msg.user {
  margin-left: auto;
  background: rgba(64, 151, 255, 0.2);
  border: 1px solid rgba(64, 151, 255, 0.35);
}

.msg.assistant {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.msg.tool {
  background: rgba(42, 211, 155, 0.14);
  border: 1px solid rgba(42, 211, 155, 0.3);
  color: #c8ffe6;
  font-family: var(--ai-mono);
}

.composer-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.prompt-box {
  flex: 1;
  min-height: 42px;
  border: 1px solid var(--ai-border);
  border-radius: 10px;
  padding: 9px 10px;
  color: var(--ai-sub);
  background: rgba(5, 10, 18, 0.7);
  font-size: 13px;
  outline: none;
}

.prompt-box:focus {
  border-color: var(--ai-border-strong);
  box-shadow: 0 0 0 3px var(--ai-glow);
}

.btn-send {
  border-radius: 10px;
  height: 42px;
  padding: 0 16px;
  font-weight: 700;
  color: #08111d;
  background: linear-gradient(120deg, #55d6ff 0%, #6ee8ac 100%);
}

.stack {
  display: grid;
  gap: 7px;
}

.row-btn {
  width: 100%;
  text-align: left;
  border: 1px solid var(--ai-border);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--ai-text);
  font-size: 13px;
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.row-btn small {
  color: var(--ai-sub);
  font-family: var(--ai-mono);
}

.row-btn.active {
  border-color: #5ad6ff;
  background: rgba(85, 214, 255, 0.16);
}

.form-label {
  display: block;
  font-size: 12px;
  color: var(--ai-sub);
  margin-bottom: 6px;
}

.ai-select {
  width: 100%;
  border: 1px solid var(--ai-border);
  border-radius: 10px;
  background: rgba(8, 14, 22, 0.88);
  color: var(--ai-text);
  padding: 9px 10px;
  font-size: 13px;
  outline: none;
}

.ai-select:focus {
  border-color: var(--ai-border-strong);
}

.btn-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 10px;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--ai-border);
  border-radius: 999px;
  padding: 8px 12px;
  color: var(--ai-text);
  font-size: 12px;
  background: rgba(255, 255, 255, 0.04);
}

.chip:hover {
  border-color: var(--ai-border-strong);
}

.chip-strong {
  border-color: transparent;
  color: #051220;
  font-weight: 700;
  background: linear-gradient(120deg, #5ad6ff 0%, #86f4bd 100%);
}

.muted {
  margin-top: 10px;
  color: var(--ai-sub);
  font-size: 13px;
}

.timeline {
  display: grid;
  gap: 8px;
}

.step {
  border-radius: 10px;
  border: 1px solid var(--ai-border);
  background: rgba(255, 255, 255, 0.04);
  padding: 10px;
}

.step b {
  display: block;
  margin-bottom: 4px;
  font-family: var(--ai-mono);
  font-size: 12px;
}

.step span {
  color: var(--ai-sub);
  font-size: 13px;
}

.step.done {
  border-color: rgba(42, 211, 155, 0.45);
}

.step.run {
  border-color: rgba(112, 215, 255, 0.5);
}

.step.wait {
  border-color: rgba(255, 191, 63, 0.42);
}

.artifact-list {
  list-style: none;
  display: grid;
  gap: 7px;
}

.artifact-list li {
  border: 1px solid var(--ai-border);
  border-radius: 10px;
  padding: 8px 10px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
}

.artifact-list li small {
  color: var(--ai-sub);
  font-family: var(--ai-mono);
  font-size: 11px;
}

.payload {
  border: 1px solid var(--ai-border);
  border-radius: 10px;
  background: rgba(4, 10, 18, 0.88);
  padding: 10px;
  color: #c7f2df;
  font: 11px/1.55 var(--ai-mono);
  max-height: 230px;
  overflow: auto;
  white-space: pre-wrap;
}

.coverage-grid {
  display: grid;
  gap: 7px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.coverage-grid div {
  border: 1px solid var(--ai-border);
  border-radius: 10px;
  padding: 8px 9px;
  font-size: 13px;
  background: rgba(255, 255, 255, 0.03);
}

.ai-footer-note {
  margin-top: 18px;
  border: 1px dashed var(--ai-border);
  border-radius: 14px;
  padding: 14px;
  text-align: center;
  background: rgba(8, 14, 24, 0.7);
}

.ai-footer-note h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.ai-footer-note p {
  color: var(--ai-sub);
  font-size: 14px;
}

@media (max-width: 980px) {
  .span-5,
  .span-6,
  .span-7 {
    grid-column: span 12;
  }

  .hero-metrics div {
    min-width: 130px;
  }
}