/* Metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin: 2.5rem 0 0;
}

.metric {
  background: var(--bg-2);
  padding: 1.25rem 1rem;
  text-align: center;
}

.metric .num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.4rem, 2.8vw, 1.85rem);
  color: var(--copper);
  letter-spacing: -0.02em;
}

.metric .label {
  margin-top: 0.35rem;
  font-size: 0.82rem;
  color: var(--muted);
}

/* Cards / project list */
.project-grid {
  display: grid;
  gap: 0;
}

.project-row {
  display: grid;
  grid-template-columns: 3.2rem 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 1.35rem 0.35rem;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease, padding 0.2s ease;
}

.project-row:first-child { border-top: 1px solid var(--line); }

.project-row:hover {
  background: rgba(232, 238, 245, 0.025);
  padding-left: 0.65rem;
  padding-right: 0.65rem;
}

.project-row .idx {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--copper);
}

.project-row h3 {
  font-size: 1.12rem;
  font-weight: 650;
  margin-bottom: 0.25rem;
}

.project-row p {
  color: var(--muted);
  font-size: 0.95rem;
}

.project-row .tag {
  font-size: 0.8rem;
  color: var(--teal);
  white-space: nowrap;
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.chip,
.filter-btn {
  padding: 0.42rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.86rem;
  color: var(--muted);
  background: rgba(18, 26, 36, 0.55);
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.filter-btn:hover,
.chip:hover {
  border-color: rgba(201, 137, 74, 0.45);
  color: var(--ink);
}

.filter-btn.active {
  border-color: var(--copper);
  color: var(--ink);
  background: var(--copper-soft);
}

.skill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

/* Pipeline sandbox */
.pipeline-panel {
  display: grid;
  grid-template-columns: 1.4fr 0.9fr;
  gap: 1.5rem;
  align-items: stretch;
  margin-top: 1.5rem;
}

.pipeline-canvas {
  position: relative;
  min-height: 320px;
  background:
    radial-gradient(ellipse 70% 60% at 50% 40%, rgba(79, 158, 168, 0.12), transparent 60%),
    var(--bg-2);
  border: 1px solid var(--line);
  padding: 1.5rem 1rem 1.25rem;
  overflow: hidden;
}

.pipeline-svg {
  width: 100%;
  height: auto;
  min-height: 260px;
}

.pipeline-node {
  cursor: pointer;
  transition: filter 0.2s ease;
}

.pipeline-node rect,
.pipeline-node circle {
  transition: fill 0.2s ease, stroke 0.2s ease;
}

.pipeline-node:hover rect,
.pipeline-node.active rect {
  fill: rgba(201, 137, 74, 0.22);
  stroke: var(--copper);
}

.pipeline-node:hover text,
.pipeline-node.active text { fill: var(--ink); }

.pipeline-detail {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 1.25rem 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.pipeline-detail h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
}

.pipeline-detail p { color: var(--muted); font-size: 0.95rem; }

.pipeline-detail .hint {
  margin-top: auto;
  font-size: 0.8rem;
  color: var(--teal);
}

/* Timeline */
.timeline-shell {
  display: grid;
  gap: 1.5rem;
}

.timeline-tabs {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.timeline-track {
  position: relative;
  padding: 1.5rem 0 0.5rem;
}

.timeline-line {
  position: absolute;
  left: 0;
  right: 0;
  top: 2.15rem;
  height: 2px;
  background: var(--line);
}

.timeline-nodes {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  scroll-snap-type: x proximity;
}

.tl-node {
  flex: 0 0 auto;
  min-width: 7.5rem;
  scroll-snap-align: start;
  text-align: center;
  cursor: pointer;
  color: var(--muted);
  padding: 0 0.35rem;
}

.tl-node .dot {
  width: 12px;
  height: 12px;
  margin: 0 auto 0.65rem;
  border-radius: 50%;
  background: var(--bg-3);
  border: 2px solid var(--line);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.tl-node.active .dot,
.tl-node:hover .dot {
  background: var(--copper);
  border-color: var(--copper);
  transform: scale(1.15);
}

.tl-node .when {
  font-size: 0.78rem;
  font-weight: 650;
  margin-bottom: 0.2rem;
  color: var(--ink);
}

.tl-node .title {
  font-size: 0.8rem;
  line-height: 1.35;
}

.timeline-detail {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 1.4rem 1.5rem;
  min-height: 8rem;
}

.timeline-detail h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.timeline-detail p { color: var(--muted); }

/* Layer stack */
.layer-list { display: grid; gap: 0.65rem; }

.layer-item {
  border: 1px solid var(--line);
  background: var(--bg-2);
  overflow: hidden;
}

.layer-head {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.15rem;
  text-align: left;
}

.layer-head h3 {
  font-size: 1.05rem;
  font-weight: 650;
}

.layer-head .meta { color: var(--teal); font-size: 0.82rem; }

.layer-body {
  display: none;
  padding: 0 1.15rem 1.15rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.layer-item.open .layer-body { display: block; padding-top: 1rem; }

.layer-item.open .layer-head { background: rgba(201, 137, 74, 0.06); }

/* Case layout */
.case-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: start;
}

.decision-list { display: grid; gap: 1rem; margin-top: 1rem; }

.decision {
  border-left: 2px solid var(--copper);
  padding: 0.35rem 0 0.35rem 1rem;
}

.decision h4 {
  font-size: 1rem;
  font-weight: 650;
  margin-bottom: 0.3rem;
}

.decision p { color: var(--muted); font-size: 0.95rem; }

.qa-list { display: grid; gap: 0.65rem; margin-top: 1rem; }

.qa details {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 0.85rem 1rem;
}

.qa summary {
  cursor: pointer;
  font-weight: 650;
  list-style: none;
}

.qa summary::-webkit-details-marker { display: none; }

.qa summary::after {
  content: "+";
  float: right;
  color: var(--copper);
}

.qa details[open] summary::after { content: "–"; }

.qa p {
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Problems table filter */
.problem-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.problem-table th,
.problem-table td {
  text-align: left;
  padding: 0.9rem 0.75rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.problem-table th {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.problem-table tr.hidden { display: none; }

.problem-table .effect { color: var(--teal); }

.meta-list {
  display: grid;
  gap: 1rem;
  padding: 1.25rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.meta-list div { display: grid; gap: 0.2rem; }

.meta-list dt {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.meta-list dd { font-weight: 600; }

.note-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.note-card {
  border: 1px solid var(--line);
  background: var(--bg-2);
  padding: 1.25rem 1.3rem;
}

.note-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
}

.note-card p { color: var(--muted); font-size: 0.95rem; }

/* Hero specific */
.hero {
  position: relative;
  min-height: calc(100vh - var(--topbar-h));
  min-height: calc(100dvh - var(--topbar-h));
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 60% at 70% 30%, rgba(79, 158, 168, 0.22), transparent 55%),
    radial-gradient(ellipse 55% 45% at 15% 80%, rgba(201, 137, 74, 0.16), transparent 50%),
    linear-gradient(160deg, #070a0f 0%, #101820 45%, #0b1016 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(232, 238, 245, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 238, 245, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 60% at 60% 40%, #000 20%, transparent 75%);
  animation: gridDrift 28s linear infinite;
}

@keyframes gridDrift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 48px 48px, 48px 48px; }
}

.aperture {
  position: absolute;
  right: max(-4rem, 2vw);
  top: 8vh;
  width: min(42vw, 420px);
  aspect-ratio: 1;
  z-index: -1;
  opacity: 0.55;
  pointer-events: none;
  transition: transform 0.35s ease;
}

.hero-content {
  padding: 5rem 0 3.5rem;
  max-width: 40rem;
}

.hero-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.4rem, 10vw, 6.2rem);
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin-bottom: 1.15rem;
  opacity: 0;
  animation: rise 0.8s ease 0.08s forwards;
}

.hero-brand em {
  font-style: normal;
  color: var(--copper);
}

.hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 0.85rem;
  opacity: 0;
  animation: rise 0.8s ease 0.2s forwards;
}

.hero .lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 34rem;
  margin-bottom: 1.8rem;
  opacity: 0;
  animation: rise 0.8s ease 0.32s forwards;
}

.hero .cta-row {
  opacity: 0;
  animation: rise 0.8s ease 0.44s forwards;
}

@keyframes rise {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

.contact-mail {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--copper);
  width: fit-content;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.contact-mail:hover { border-bottom-color: var(--copper); }

@media (max-width: 900px) {
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .metrics .metric:last-child { grid-column: 1 / -1; }
  .pipeline-panel,
  .case-grid { grid-template-columns: 1fr; }
  .note-cards { grid-template-columns: 1fr; }
  .project-row {
    grid-template-columns: 2.5rem 1fr;
  }
  .project-row .tag {
    grid-column: 2;
    margin-top: 0.25rem;
  }
  .aperture {
    width: min(70vw, 280px);
    top: 6vh;
    opacity: 0.32;
  }
}