:root {
  --bg: #10131a;
  --surface: #171b24;
  --surface-2: #1e2330;
  --text: #ece9e2;
  --text-dim: #8b92a3;
  --border: #272c38;
  --accent-code: #f2b85c;
  --accent-platform: #5cc8c2;
  --accent: var(--accent-code);
  --radius: 10px;
  --transition: 420ms cubic-bezier(0.25, 0.8, 0.35, 1);
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition: 1ms linear;
  }

  * {
    animation-duration: 1ms !important;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  font-family: "Space Grotesk", sans-serif;
  margin: 0;
  letter-spacing: -0.01em;
}

code,
.mono {
  font-family: "JetBrains Mono", monospace;
}

a {
  color: inherit;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

::selection {
  background: var(--accent);
  color: #10131a;
}

/* ---------- Browser chrome bar ---------- */
.chrome {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.chrome-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.dots {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: block;
}

.dots span:nth-child(1) {
  background: #ff5f57;
}

.dots span:nth-child(2) {
  background: #febc2e;
}

.dots span:nth-child(3) {
  background: #28c840;
}

.addr {
  flex: 1;
  min-width: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 14px;
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  color: var(--text-dim);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.toggle {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px;
}

.toggle button {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition:
    background var(--transition),
    color var(--transition);
  white-space: nowrap;
}

.toggle button[aria-pressed="true"] {
  background: var(--accent);
  color: #10131a;
  font-weight: 600;
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 48px;
}

.eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
  transition: color var(--transition);
}

.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.1;
  margin-bottom: 20px;
}

.hero p.lead {
  color: var(--text-dim);
  font-size: 17px;
  max-width: 560px;
  margin-bottom: 32px;
}

.cta-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
  transition:
    transform var(--transition),
    border-color var(--transition),
    background var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--accent);
  color: #10131a;
  border-color: transparent;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--accent);
}

/* ---------- Panel (signature element) ---------- */
.panel {
  margin-top: 56px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  overflow: hidden;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 11.5px;
  color: var(--text-dim);
}

.panel-body {
  position: relative;
  min-height: 260px;
}

.view {
  position: absolute;
  inset: 0;
  padding: 22px;
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition:
    opacity var(--transition),
    transform var(--transition);
}

.view.active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  position: relative;
}

/* code view */
.code-view {
  display: flex;
  gap: 16px;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
}

.line-nums {
  color: #3a4054;
  text-align: right;
  user-select: none;
  flex-shrink: 0;
}

.code-view pre {
  margin: 0;
  white-space: pre-wrap;
  color: var(--text-dim);
}

.tok-kw {
  color: #c792ea;
}

.tok-tag {
  color: var(--accent-code);
}

.tok-str {
  color: #7ee787;
}

.tok-fn {
  color: #82aaff;
}

.cursor {
  display: inline-block;
  width: 7px;
  height: 14px;
  background: var(--accent-code);
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* platform view */
.builder-view {
  display: flex;
  gap: 14px;
  height: 100%;
}

.layers {
  width: 150px;
  flex-shrink: 0;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  font-size: 12px;
  color: var(--text-dim);
}

.layers .layer-title {
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #565e73;
  margin-bottom: 10px;
}

.layer-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  border-radius: 6px;
  margin-bottom: 4px;
}

.layer-item.on {
  background: rgba(92, 200, 194, 0.12);
  color: var(--accent-platform);
}

.layer-item .sq {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: currentColor;
  opacity: 0.6;
  flex-shrink: 0;
}

.canvas {
  flex: 1;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.block {
  border: 1px dashed var(--border);
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 12px;
  color: var(--text-dim);
  position: relative;
}

.block.hl {
  border-color: var(--accent-platform);
  color: var(--text);
}

.block .tag {
  position: absolute;
  top: -9px;
  left: 10px;
  background: var(--accent-platform);
  color: #10131a;
  font-family: "JetBrains Mono", monospace;
  font-size: 9.5px;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 600;
}

.block .rule {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px dashed var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  color: var(--accent-platform);
}

/* ---------- Sections ---------- */
section {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

.section-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 14px;
}

.about p {
  color: var(--text-dim);
  font-size: 16px;
  max-width: 640px;
}

.about strong {
  color: var(--text);
  font-weight: 600;
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 24px;
}

.skills-grid-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

@media (max-width: 860px) {
  .skills-grid-3 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {

  .skills-grid,
  .skills-grid-3 {
    grid-template-columns: 1fr;
  }
}

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition:
    border-color var(--transition),
    transform var(--transition);
}

.skill-card.focus {
  transform: translateY(-2px);
}

.skill-card h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.skill-card .tagline {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.skill-card ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-card li {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 5px 10px;
  border-radius: 6px;
  color: var(--text-dim);
}

.skill-card.code-card {
  border-color: rgba(242, 184, 92, 0.35);
}

.skill-card.code-card h3 {
  color: var(--accent-code);
}

.skill-card.platform-card {
  border-color: rgba(92, 200, 194, 0.35);
}

.skill-card.platform-card h3 {
  color: var(--accent-platform);
}

.skill-card.agent-card {
  border-color: rgba(199, 146, 234, 0.35);
}

.skill-card.agent-card h3 {
  color: #c792ea;
}

footer {
  padding: 56px 0 72px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.foot-note {
  margin-top: 40px;
  font-size: 13px;
  color: #565e73;
}