:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #101311;
  color: #f1f2ec;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
  --muted: #929a92;
  --line: #292f2b;
  --green: #c6f277;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(ellipse at 50% -35%, #243020 0, transparent 52%),
    #101311;
}

button,
label {
  font: inherit;
}

.app-shell {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 48px 0 56px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
}

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

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.16em;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 650;
  letter-spacing: -0.055em;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 15px;
}

#file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  clip-path: inset(50%);
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  border: 1px solid #414a40;
  border-radius: 9px;
  color: #e8ebdf;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: background 140ms ease, border-color 140ms ease;
}

.button:hover,
.button:focus-visible {
  border-color: #758460;
  background: #242b21;
  outline: none;
}

.drop-zone {
  display: flex;
  min-height: 118px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  border: 1px dashed #485044;
  border-radius: 14px;
  background: #171b18cc;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
  transition: background 140ms ease, border-color 140ms ease;
}

.drop-zone:focus-visible {
  border-color: var(--green);
  outline: 2px solid #c6f27766;
  outline-offset: 3px;
}

.drop-zone.is-dragging {
  border-color: var(--green);
  background: #222b1b;
}

.upload-icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border: 1px solid #3b4435;
  border-radius: 12px;
  color: var(--green);
  font-size: 23px;
}

.drop-zone strong,
.drop-zone span:not(.upload-icon) {
  display: block;
}

.drop-zone strong {
  margin-bottom: 5px;
  color: #e6e9df;
  font-size: 14px;
}

.drop-zone div span {
  font-size: 12px;
}

.status {
  min-height: 20px;
  margin: 13px 2px 20px;
  color: var(--muted);
  font-size: 12px;
}

.status.error {
  color: #ff9b91;
}

code {
  color: #d7edaf;
}

.results[hidden] {
  display: none;
}

.summary {
  display: flex;
  flex-wrap: wrap;
  min-height: 72px;
  align-items: center;
  gap: 14px 28px;
  margin-bottom: 12px;
  padding: 0 2px;
}

.stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
}

.stat span:first-child {
  color: #f0f2e9;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: -0.04em;
}

.stat span:last-child,
.graph-hint {
  color: var(--muted);
  font-size: 12px;
}

.graph-hint {
  margin-left: auto;
}

.graph-download {
  min-height: 36px;
  padding: 0 11px;
  font-size: 11px;
  white-space: nowrap;
}

.graph-wrap {
  position: relative;
  min-height: 760px;
  overflow: auto;
  overscroll-behavior: contain;
  border: 1px solid var(--line);
  border-radius: 16px;
  background:
    radial-gradient(circle at 50% 45%, #192019 0, #141815 60%, #121513 100%);
}

#graph {
  display: block;
  width: 100%;
  height: max(85vh, 760px);
  min-height: 760px;
  touch-action: none;
}

.tooltip {
  position: absolute;
  z-index: 2;
  max-width: 230px;
  padding: 10px 12px;
  border: 1px solid #404a3e;
  border-radius: 9px;
  background: #202620f2;
  box-shadow: 0 8px 24px #0005;
  color: #f0f2e9;
  font-size: 12px;
  pointer-events: none;
}

.tooltip[hidden] {
  display: none;
}

.tooltip strong,
.tooltip span {
  display: block;
}

.tooltip span {
  margin-top: 4px;
  color: var(--muted);
}

.legend {
  position: absolute;
  right: 14px;
  bottom: 14px;
  left: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  pointer-events: none;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border: 1px solid #343a35;
  border-radius: 20px;
  background: #151916e8;
  color: #c7cdc4;
  font-size: 10px;
}

.legend-swatch {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100% - 28px, 1160px);
    padding-top: 32px;
  }

  .page-header {
    align-items: flex-start;
  }

  .header-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .drop-zone {
    min-height: 102px;
  }

  .summary {
    flex-wrap: wrap;
    gap: 10px 22px;
    padding: 10px 0;
  }

  .graph-hint {
    width: 100%;
    margin: 0;
  }

  .graph-download {
    flex: 1;
  }

  .graph-wrap,
  #graph {
    min-height: 760px;
  }

  .graph-wrap {
    overflow-x: auto;
    overscroll-behavior-x: contain;
  }
}

.unified-shell {
  width: min(1500px, calc(100% - 48px));
  padding-top: 88px;
}

.view-switcher {
  position: fixed;
  z-index: 10;
  top: 16px;
  left: 18px;
  display: flex;
  gap: 3px;
  padding: 4px;
  border: 1px solid #343b35;
  border-radius: 12px;
  background: #171c18eF;
  box-shadow: 0 8px 24px #0004;
  backdrop-filter: blur(12px);
}

.view-tab {
  min-height: 34px;
  padding: 0 13px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #9da69b;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 600;
}

.view-tab:hover,
.view-tab[aria-pressed="true"] {
  background: #293126;
  color: var(--green);
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 20px;
}

.view-header h1 {
  font-size: clamp(30px, 4vw, 42px);
}

.view-header .subtitle {
  font-size: 13px;
}

.app-view[hidden] {
  display: none;
}

.compact-drop-zone {
  min-height: 70px;
  justify-content: flex-start;
  padding: 10px 18px;
  border-radius: 11px;
}

#drop-zone[hidden] {
  display: none;
}

.compact-drop-zone .upload-icon {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
}

.graph-tools {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  color: var(--muted);
  font-size: 11px;
}

.icon-tool {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid #414a40;
  border-radius: 8px;
  background: #171b18;
  color: #e8ebdf;
  cursor: pointer;
  font: inherit;
  font-size: 17px;
}

.icon-tool:hover {
  border-color: #758460;
  background: #242b21;
}

.graph-tools .button {
  min-height: 34px;
}

.graph-wrap {
  height: min(78vh, 1000px);
  min-height: 480px;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
  user-select: none;
}

.graph-wrap.is-dragging {
  border-color: var(--green);
  background-color: #222b1b;
}

#graph {
  transform-origin: top left;
  touch-action: none;
  will-change: transform;
}

.graph-view .summary {
  gap: 12px 24px;
  margin-bottom: 8px;
}

.graph-view .graph-hint {
  margin: 0 0 0 auto;
}

.graph-view .status {
  margin-bottom: 10px;
}

@media (max-width: 760px) {
  .unified-shell {
    width: calc(100% - 28px);
    padding-top: 78px;
  }

  .view-header {
    align-items: flex-start;
  }

  .view-header .subtitle {
    max-width: 34ch;
    line-height: 1.5;
  }

  .graph-tools {
    width: 100%;
    margin-left: 0;
  }

  .graph-tools .graph-download {
    flex: 1;
  }

  .graph-view .graph-hint {
    width: 100%;
    margin: 0;
  }

  .graph-wrap {
    height: 68vh;
    min-height: 420px;
  }
}

@media (max-width: 480px) {
  .view-switcher {
    top: 10px;
    left: 10px;
  }

  .unified-shell {
    padding-top: 68px;
  }

  .view-header h1 {
    font-size: 30px;
  }

  .graph-tools {
    gap: 5px;
  }
}

.graph-view {
  position: fixed;
  z-index: 1;
  inset: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  background:
    radial-gradient(circle at 1px 1px, #68726024 1px, transparent 0) 0 0 / 22px 22px,
    radial-gradient(ellipse at 50% 42%, #192019 0, #121613 72%);
}

.graph-view .status {
  position: fixed;
  z-index: 4;
  bottom: 14px;
  left: 18px;
  max-width: min(480px, calc(100vw - 36px));
  min-height: 0;
  margin: 0;
  padding: 7px 10px;
  border: 1px solid #343b35aa;
  border-radius: 8px;
  background: #141915d9;
  font-size: 10px;
  pointer-events: none;
  backdrop-filter: blur(10px);
}

.graph-view .status:not(.error) {
  display: none;
}

.graph-view .results {
  display: contents;
}

.graph-view .results[hidden] {
  display: none;
}

.graph-view .summary {
  position: fixed;
  z-index: 5;
  top: 16px;
  right: 166px;
  display: flex;
  min-height: 0;
  flex-wrap: nowrap;
  gap: 6px;
  margin: 0;
  padding: 5px 8px;
  border: 1px solid #343b35;
  border-radius: 11px;
  background: #141915eF;
  box-shadow: 0 8px 24px #0003;
  backdrop-filter: blur(12px);
}

.graph-view .stat {
  gap: 4px;
}

.graph-view .stat span:first-child {
  font-size: 12px;
  letter-spacing: 0;
}

.graph-view .stat span:last-child {
  font-size: 9px;
}

.graph-view .graph-tools {
  gap: 4px;
  margin-left: 4px;
  font-size: 9px;
}

.visualization-control {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: 9px;
  white-space: nowrap;
}

.visualization-control[hidden] {
  display: none;
}

.visualization-control select {
  max-width: 90px;
  min-height: 25px;
  padding: 0 5px;
  border: 1px solid #414a40;
  border-radius: 6px;
  background: #171b18;
  color: #e8ebdf;
  font: inherit;
  cursor: pointer;
}

.visualization-control select:focus-visible {
  border-color: var(--green);
  outline: 2px solid #c6f27740;
  outline-offset: 2px;
}

.graph-view .icon-tool {
  width: 25px;
  height: 25px;
  border-radius: 6px;
  font-size: 13px;
}

.graph-view .graph-tools .button {
  min-height: 25px;
  padding: 0 8px;
  border-radius: 6px;
  font-size: 9px;
}

.graph-view .graph-hint {
  display: none;
}

.graph-view .graph-wrap {
  position: absolute;
  z-index: 1;
  inset: 0;
  width: 100%;
  height: 100%;
  min-height: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.graph-view .graph-wrap.is-dragging {
  outline: 2px solid var(--green);
  outline-offset: -8px;
  background: #c6f2770a;
}

.graph-view #graph {
  display: block;
  min-height: 0;
}

.graph-view .compact-drop-zone {
  position: fixed;
  z-index: 4;
  top: 50%;
  left: 50%;
  width: min(330px, calc(100vw - 44px));
  min-height: 62px;
  padding: 8px 12px;
  background: #141915eF;
  transform: translate(-50%, -50%);
  backdrop-filter: blur(12px);
}

@media (max-width: 760px) {
  .graph-view .summary {
    top: auto;
    left: 10px;
    right: 10px;
    bottom: max(10px, env(safe-area-inset-bottom));
    flex-wrap: wrap;
    justify-content: center;
    max-width: none;
  }

  .graph-view .graph-tools {
    flex-wrap: wrap;
    justify-content: center;
    width: 100%;
    margin: 0;
  }

  .graph-view .graph-tools .graph-download {
    flex: 1 0 100%;
  }

  .graph-view .visualization-control select {
    max-width: 120px;
    min-height: 32px;
  }

  .graph-view .icon-tool {
    width: 32px;
    height: 32px;
  }

  .graph-view .graph-tools .button {
    min-height: 32px;
  }

  .graph-view .status.error {
    bottom: calc(14px + env(safe-area-inset-bottom));
    left: 10px;
    max-width: min(480px, calc(100vw - 20px));
    font-size: 9px;
  }
}

@media (max-width: 420px) {
  .graph-view .summary {
    top: auto;
    left: 8px;
    right: 8px;
    bottom: max(8px, env(safe-area-inset-bottom));
    width: auto;
    max-width: none;
    gap: 6px 10px;
    padding: 7px;
  }

  .graph-view .stat span:first-child {
    font-size: 11px;
  }

  .graph-view .stat span:last-child {
    font-size: 8px;
  }

  .graph-view .graph-tools {
    gap: 5px;
  }
}