.architect-page {
  padding: 2rem 0 3rem;
}

.architect-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.9fr);
  gap: 1.5rem;
  align-items: stretch;
  margin-bottom: 1.5rem;
}

.hero-copy,
.hero-card,
.architect-panel,
.workspace-toolbar,
.canvas-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 55%),
    var(--card-bg);
}

.hero-copy {
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: clamp(1.5rem, 3vw, 2.6rem);
  position: relative;
  overflow: hidden;
}

.hero-copy::after {
  content: "";
  position: absolute;
  inset: auto -10% -35% auto;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, var(--primary-dim) 0%, transparent 72%);
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: var(--primary-dim);
  border: 1px solid var(--primary-border);
  color: var(--primary-color);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-copy h1 {
  margin-top: 1rem;
  font-size: clamp(2.4rem, 4vw, 4rem);
}

.hero-copy p {
  margin-top: 0.9rem;
  max-width: 60ch;
  font-size: 1.05rem;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.2rem;
}

.hero-points span,
.mode-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.03);
  padding: 0.55rem 0.8rem;
  color: var(--text-gray);
  font-size: 0.9rem;
  font-weight: 600;
}

.hero-card,
.architect-panel,
.workspace-toolbar,
.canvas-card {
  border: 1px solid var(--border-color);
  border-radius: 24px;
}

.hero-card {
  padding: 1.5rem;
}

.hero-card h2 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.hero-card ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-gray);
}

.hero-card li + li {
  margin-top: 0.6rem;
}

.architect-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 280px;
  gap: 1rem;
  align-items: start;
}

.architect-panel {
  padding: 1.2rem;
  position: sticky;
  top: 92px;
}

.panel-heading h2,
.canvas-meta h2 {
  font-size: 1.05rem;
}

.panel-heading p,
.canvas-meta p {
  margin-top: 0.35rem;
  font-size: 0.92rem;
}

.shape-palette {
  display: grid;
  gap: 0.8rem;
  margin-top: 1rem;
}

.shape-chip {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-light);
  cursor: grab;
  transition:
    transform var(--transition-speed) ease,
    border-color var(--transition-speed) ease,
    background-color var(--transition-speed) ease;
}

.shape-chip:hover,
.shape-chip:focus-visible {
  border-color: var(--primary-border);
  background: var(--primary-dim);
  transform: translateY(-1px);
}

.shape-chip:active {
  cursor: grabbing;
}

.shape-preview {
  width: 2.5rem;
  height: 1.6rem;
  border: 2px solid currentColor;
  color: var(--primary-color);
  flex: 0 0 auto;
}

.preview-pill {
  border-radius: 999px;
}

.preview-rect {
  border-radius: 0.55rem;
}

.preview-diamond {
  width: 1.8rem;
  height: 1.8rem;
  transform: rotate(45deg);
  border-radius: 0.3rem;
}

.preview-input {
  clip-path: polygon(10% 0%, 100% 0%, 90% 100%, 0% 100%);
  background: currentColor;
  opacity: 0.14;
}

.starter-actions {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.1rem;
}

.canvas-column {
  display: grid;
  gap: 1rem;
}

.workspace-toolbar {
  padding: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.toolbar-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.canvas-card {
  padding: 1rem;
}

.canvas-meta {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.canvas-stage {
  position: relative;
  min-height: 760px;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  background:
    radial-gradient(circle at top left, rgba(20, 184, 166, 0.08), transparent 22%),
    linear-gradient(180deg, rgba(14, 165, 233, 0.05), transparent 24%),
    color-mix(in srgb, var(--bg-darker) 92%, #0b1220);
}

.diagram-canvas {
  width: 100%;
  height: 760px;
  display: block;
  touch-action: none;
}

.grid-line {
  fill: none;
  stroke: rgba(148, 163, 184, 0.16);
  stroke-width: 1;
}

.arrow-head {
  fill: context-stroke;
}

.edge-path {
  fill: none;
  stroke: #38bdf8;
  stroke-width: 2.5;
  marker-end: url(#arrowhead);
}

.edge-path.selected {
  stroke-width: 4;
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.35));
}

.node-group {
  cursor: move;
}

.node-shape {
  fill: rgba(15, 23, 42, 0.92);
  stroke: rgba(148, 163, 184, 0.65);
  stroke-width: 2;
}

.node-group.selected .node-shape {
  stroke-width: 3;
  filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.3));
}

.node-group.connect-source .node-shape {
  stroke-width: 3;
  filter: drop-shadow(0 0 10px rgba(245, 158, 11, 0.45));
}

.node-label {
  fill: #e7edf7;
  font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  font-size: 16px;
  font-weight: 600;
  text-anchor: middle;
  dominant-baseline: middle;
  user-select: none;
  pointer-events: none;
}

[data-theme="light"] .node-shape {
  fill: rgba(255, 255, 255, 0.96);
  stroke: rgba(71, 85, 105, 0.45);
}

[data-theme="light"] .node-label {
  fill: #0f172a;
}

.field {
  display: grid;
  gap: 0.45rem;
  margin-top: 1rem;
}

.field span {
  color: var(--text-gray);
  font-size: 0.9rem;
  font-weight: 600;
}

.size-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.color-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

input[type="color"] {
  min-height: 52px;
  padding: 0.35rem;
  cursor: pointer;
}

input[type="color"]:disabled {
  cursor: not-allowed;
}

.inspector-state {
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-light);
  font-weight: 600;
}

.inspector-note {
  margin-top: 1rem;
  border-left: 3px solid var(--primary-color);
  padding-left: 0.9rem;
  color: var(--text-gray);
  font-size: 0.94rem;
}

@media (max-width: 1180px) {
  .architect-shell {
    grid-template-columns: 1fr;
  }

  .architect-panel {
    position: static;
  }
}

@media (max-width: 900px) {
  .architect-hero {
    grid-template-columns: 1fr;
  }

  .canvas-meta,
  .workspace-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .mode-pill {
    justify-content: center;
  }
}

@media (max-width: 640px) {
  .architect-page {
    padding-top: 1.25rem;
  }

  .canvas-stage,
  .diagram-canvas {
    min-height: 560px;
    height: 560px;
  }

  .size-grid {
    grid-template-columns: 1fr;
  }

  .color-grid {
    grid-template-columns: 1fr;
  }
}