styles.css

:root {
  color-scheme: dark;
  --bg: #05070a;
  --panel: rgba(5, 14, 18, 0.78);
  --panel-strong: rgba(8, 28, 32, 0.92);
  --line: rgba(95, 240, 219, 0.25);
  --text: #d9fff8;
  --muted: #6faea7;
  --cyan: #55f0dc;
  --green: #7df5a8;
  --amber: #ffd166;
  --rose: #ff6b8a;
  --violet: #b79cff;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 48% 40%, rgba(85, 240, 220, 0.12), transparent 34%),
    linear-gradient(140deg, #05070a 0%, #071418 46%, #120f22 100%);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  position: relative;
  display: grid;
  grid-template-columns: minmax(250px, 18vw) 1fr minmax(320px, 24vw);
  grid-template-rows: 82px 1fr;
  width: 100vw;
  height: 100vh;
}

.topbar {
  z-index: 5;
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.42);
  backdrop-filter: blur(18px);
}

.brand h1,
.panel-heading h2,
.insights h2,
.import-preview h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand h1 {
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  text-transform: uppercase;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.icon-button,
.danger-button {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid rgba(85, 240, 220, 0.35);
  border-radius: 8px;
  background: rgba(85, 240, 220, 0.1);
  color: var(--text);
  font-size: 1.35rem;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.icon-button:hover,
.danger-button:hover,
.primary-action:hover,
.secondary-action:hover {
  transform: translateY(-1px);
  border-color: rgba(85, 240, 220, 0.75);
  background: rgba(85, 240, 220, 0.18);
}

.file-button input {
  display: none;
}

.left-panel,
.detail-panel {
  z-index: 4;
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding: 20px;
  border-color: var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.left-panel {
  border-right: 1px solid var(--line);
}

.detail-panel {
  overflow: auto;
  border-left: 1px solid var(--line);
}

.field {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.field input,
.field textarea {
  width: 100%;
  border: 1px solid rgba(85, 240, 220, 0.22);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.28);
  color: var(--text);
  outline: none;
  padding: 11px 12px;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  border-color: rgba(85, 240, 220, 0.78);
  box-shadow: 0 0 0 3px rgba(85, 240, 220, 0.12);
}

input[type="range"] {
  accent-color: var(--cyan);
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  overflow: hidden;
  border: 1px solid rgba(85, 240, 220, 0.22);
  border-radius: 8px;
}

.segmented button {
  min-width: 0;
  border: 0;
  border-right: 1px solid rgba(85, 240, 220, 0.16);
  background: rgba(0, 0, 0, 0.2);
  color: var(--muted);
  padding: 10px 4px;
  font-size: 0.78rem;
}

.segmented button:last-child {
  border-right: 0;
}

.segmented .is-active {
  background: rgba(85, 240, 220, 0.18);
  color: var(--text);
}

.primary-action,
.secondary-action {
  min-height: 42px;
  border: 1px solid rgba(85, 240, 220, 0.36);
  border-radius: 8px;
  background: rgba(85, 240, 220, 0.12);
  color: var(--text);
  font-weight: 800;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.secondary-action {
  background: rgba(183, 156, 255, 0.12);
  border-color: rgba(183, 156, 255, 0.34);
}

.danger-button {
  border-color: rgba(255, 107, 138, 0.42);
  background: rgba(255, 107, 138, 0.1);
}

.insights {
  display: grid;
  gap: 14px;
  margin-top: auto;
  border: 1px solid rgba(85, 240, 220, 0.18);
  border-radius: 8px;
  background: rgba(85, 240, 220, 0.06);
  padding: 16px;
}

.insights h2,
.import-preview h2 {
  font-size: 1rem;
}

.insights dl {
  display: grid;
  gap: 12px;
  margin: 0;
}

.insights div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.insights dt {
  color: var(--muted);
}

.insights dd {
  margin: 0;
  color: var(--text);
  font-weight: 800;
  text-align: right;
}

.map-stage {
  position: relative;
  overflow: hidden;
  min-width: 0;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  opacity: 0.32;
  background-image:
    linear-gradient(rgba(85, 240, 220, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(85, 240, 220, 0.08) 1px, transparent 1px);
  background-size: 44px 44px;
}

#connection-layer,
#node-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

#connection-layer {
  z-index: 1;
}

#node-layer {
  z-index: 2;
}

.connection {
  stroke: rgba(85, 240, 220, 0.42);
  stroke-width: 2;
}

.connection.is-muted {
  stroke: rgba(85, 240, 220, 0.1);
}

.node {
  position: absolute;
  display: grid;
  place-items: center;
  width: var(--node-size);
  height: var(--node-size);
  border: 1px solid color-mix(in srgb, var(--node-color), white 22%);
  border-radius: 999px;
  background:
    radial-gradient(circle at 36% 30%, rgba(255, 255, 255, 0.18), transparent 22%),
    color-mix(in srgb, var(--node-color), transparent 80%);
  color: var(--text);
  padding: 12px;
  text-align: center;
  box-shadow:
    0 0 18px color-mix(in srgb, var(--node-color), transparent 22%),
    0 0 52px color-mix(in srgb, var(--node-color), transparent 48%),
    0 0 112px color-mix(in srgb, var(--node-color), transparent 72%),
    inset 0 0 24px rgba(255, 255, 255, 0.08);
  transform: translate(-50%, -50%);
  transition: opacity 160ms ease, scale 160ms ease, box-shadow 160ms ease;
  user-select: none;
  animation: node-glow 2.6s ease-in-out infinite;
}

.node::before,
.node::after {
  content: "";
  position: absolute;
  border-radius: inherit;
  pointer-events: none;
}

.node::before {
  inset: -11px;
  border: 1px solid color-mix(in srgb, var(--node-color), transparent 32%);
  filter: blur(5px);
  opacity: 0.78;
}

.node::after {
  inset: -24px;
  background: radial-gradient(circle, color-mix(in srgb, var(--node-color), transparent 62%), transparent 68%);
  filter: blur(10px);
  opacity: 0.74;
  z-index: -1;
}

.node:hover,
.node.is-active {
  scale: 1.08;
  box-shadow:
    0 0 24px color-mix(in srgb, var(--node-color), white 4%),
    0 0 68px color-mix(in srgb, var(--node-color), transparent 26%),
    0 0 140px color-mix(in srgb, var(--node-color), transparent 58%),
    inset 0 0 30px rgba(255, 255, 255, 0.12);
}

.node.is-dimmed {
  opacity: 0.22;
}

.node strong {
  display: block;
  width: 100%;
  overflow-wrap: anywhere;
  font-size: clamp(0.72rem, 1vw, 0.92rem);
}

.node small {
  color: rgba(217, 255, 248, 0.62);
  font-size: 0.68rem;
}

@keyframes node-glow {
  0%,
  100% {
    filter: brightness(1);
  }

  50% {
    filter: brightness(1.24);
  }
}

.map-caption {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-align: center;
  text-transform: uppercase;
}

#memory-form {
  display: grid;
  gap: 16px;
}

.panel-heading {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.import-preview {
  display: grid;
  gap: 10px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.import-preview pre {
  max-height: 180px;
  overflow: auto;
  margin: 0;
  white-space: pre-wrap;
  color: rgba(217, 255, 248, 0.78);
  font-size: 0.78rem;
}

.source-importer {
  display: grid;
  gap: 12px;
  border: 1px solid rgba(85, 240, 220, 0.18);
  border-radius: 8px;
  background: rgba(85, 240, 220, 0.055);
  padding: 14px;
}

.source-importer h2 {
  margin: 0;
  font-size: 1rem;
}

.source-status {
  min-height: 1.1rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.source-status.is-error {
  color: var(--rose);
}

.source-status.is-success {
  color: var(--green);
}

@media (max-width: 980px) {
  body {
    overflow: auto;
  }

  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 70vh auto;
    min-height: 100vh;
    height: auto;
  }

  .topbar,
  .left-panel,
  .map-stage,
  .detail-panel {
    grid-column: 1;
  }

  .left-panel,
  .detail-panel {
    border: 0;
    border-bottom: 1px solid var(--line);
  }

  .map-stage {
    min-height: 70vh;
  }
}