* {
  box-sizing: border-box;
}

:root {
  --bg-top: #f5f7fb;
  --bg-bottom: #dde5f4;
  --panel: #ffffff;
  --panel-muted: #edf2fc;
  --ink: #1d2535;
  --ink-soft: #5b667d;
  --line: #c8d2e7;
  --accent: #0f6ef2;
  --accent-soft: #dbe8ff;
  --success: #1f8d57;
  --warn: #946200;
  --danger: #ab2f2f;
  --shadow: 0 12px 26px rgba(29, 37, 53, 0.12);
  --radius: 14px;
  --font-ui: "Space Grotesk", "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Consolas", monospace;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-ui);
  background: linear-gradient(165deg, var(--bg-top), var(--bg-bottom));
}

body.auth-locked {
  overflow: hidden;
}

body.auth-locked .app-header,
body.auth-locked #status-message,
body.auth-locked .simulation-progress,
body.auth-locked main {
  display: none;
}

body.auth-ready .login-screen {
  display: none;
}

.login-screen {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background:
    linear-gradient(135deg, rgba(15, 110, 242, 0.12), transparent 38%),
    linear-gradient(165deg, var(--bg-top), var(--bg-bottom));
}

.login-card {
  width: min(100%, 390px);
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
}

.login-kicker {
  margin: 0 0 6px;
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.login-card h1 {
  margin: 0 0 18px;
  color: var(--ink);
  font-size: 1.25rem;
  line-height: 1.2;
}

.login-card button {
  margin-top: 12px;
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.login-error {
  margin: 10px 0 0;
  color: var(--danger);
  font-size: 0.82rem;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.84);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(5px);
}

.header-chips {
  display: flex;
  align-items: center;
  gap: 8px;
}

.title-wrap h1 {
  margin: 0;
  font-size: 1.2rem;
}

.title-wrap p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.worker-chip {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--panel-muted);
  font-size: 0.84rem;
  color: var(--ink-soft);
  border: 1px solid var(--line);
}

.network-chip {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  font-size: 0.84rem;
  font-weight: 600;
}

.network-chip.online {
  color: #0f5d38;
  background: #e6f5ee;
  border-color: #bde2cd;
}

.network-chip.offline {
  color: #8a4f00;
  background: #fff4e2;
  border-color: #f0cb97;
}

.install-btn {
  width: auto;
  white-space: nowrap;
  background: #16324f;
  color: #fff;
  border-color: #16324f;
}

#status-message {
  padding: 9px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

#status-message.ready {
  color: var(--success);
}

#status-message.loading {
  color: var(--warn);
}

#status-message.error {
  color: var(--danger);
}

.simulation-progress {
  display: grid;
  grid-template-columns: minmax(120px, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-bottom: 1px solid var(--line);
  background: #eef6ff;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.simulation-progress progress {
  width: 100%;
  height: 12px;
  accent-color: #0f6ef2;
}

body.simulation-running,
body.simulation-running * {
  cursor: progress !important;
}

main {
  display: grid;
  grid-template-columns: 340px 1fr 320px;
  gap: 14px;
  padding: 14px;
}

#left-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.panel-block {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}

.panel-block h2 {
  margin: 0 0 10px;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-soft);
}

.tiny-note {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  line-height: 1.3;
}

.toggle-row input[type="checkbox"] {
  width: auto;
  margin: 0;
}

label {
  display: block;
  margin: 8px 0 4px;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

input,
button {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--line);
  font-family: var(--font-ui);
  font-size: 0.9rem;
  padding: 8px 10px;
}

input {
  background: #fff;
  color: var(--ink);
}

button {
  background: var(--panel-muted);
  color: var(--ink);
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease;
}

button:hover:enabled {
  transform: translateY(-1px);
  background: var(--accent-soft);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button.is-loading {
  position: relative;
  padding-left: 34px;
}

button.is-loading::before {
  content: "";
  position: absolute;
  left: 12px;
  top: 50%;
  width: 13px;
  height: 13px;
  margin-top: -7px;
  border: 2px solid rgba(29, 37, 53, 0.25);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

#run-btn {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.action-row {
  display: grid;
  gap: 8px;
}

#workspace-panel {
  display: grid;
  gap: 12px;
}

#inspector-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.inspector-block {
  min-height: 220px;
}

.inspector-heading {
  margin: 0 0 8px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f7faff;
}

#inspector-node-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
}

.inspector-type {
  margin-top: 2px;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-soft);
}

#inspector-form {
  display: grid;
  gap: 8px;
}

.inspector-field {
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: #ffffff;
}

.inspector-field input,
.inspector-field select {
  margin-top: 4px;
}

.inspector-field.invalid {
  border-color: #f0b7b7;
  background: #fff6f6;
}

.inspector-warning {
  min-height: 1em;
  margin-top: 4px;
  font-size: 0.74rem;
  color: var(--danger);
}

.ergodic-jackpot {
  padding: 8px 10px;
  border: 1px solid #86c99a;
  border-left-width: 4px;
  border-radius: 8px;
  background: #f1fbf4;
  color: #1c5b33;
  font-weight: 600;
}

.photo-attachment-panel {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #f8fbff;
}

.photo-attachment-heading {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.photo-attachment-list {
  display: grid;
  gap: 8px;
}

.photo-attachment-item {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.photo-attachment-item img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.photo-attachment-meta {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.photo-attachment-meta strong {
  overflow: hidden;
  color: var(--ink);
  font-size: 0.78rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.photo-remove-btn {
  width: auto;
  padding: 6px 8px;
  font-size: 0.72rem;
}

.inspector-toggle {
  display: flex;
  align-items: center;
  gap: 8px;
}

.inspector-toggle input[type="checkbox"] {
  width: auto;
  margin: 0;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 10px;
  font-size: 0.88rem;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

#graph-shell {
  min-height: 460px;
}

#graph-canvas-wrap {
  position: relative;
  height: 430px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fbfdff;
  overflow: hidden;
  resize: vertical;
}

#graph-node-highlight-overlay {
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 0;
  border: 2px solid rgba(15, 110, 242, 0.95);
  border-radius: 10px;
  box-shadow: 0 0 0 2px rgba(15, 110, 242, 0.2);
  pointer-events: none;
  opacity: 0;
  transition: opacity 80ms linear;
}

#graph-canvas {
  display: block;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0;
  background: transparent;
  width: 100%;
  height: 100%;
}

#diagnostics-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.35fr);
  gap: 12px;
}

.plot-card {
  display: flex;
  flex-direction: column;
}

.plot-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  margin: 0 0 8px;
}

.plot-toolbar label {
  font-size: 0.78rem;
  color: var(--ink-soft);
}

.plot-toolbar select {
  min-width: 190px;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f8fbff;
  color: #1d334d;
  font-size: 0.82rem;
}

.metric-readout {
  min-width: 132px;
  color: var(--ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  text-align: right;
}

.outlet-toolbar {
  display: grid;
  gap: 6px;
  margin: 0 0 8px;
}

.outlet-toolbar label {
  margin: 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

#outlet-distance-slider {
  width: 100%;
  margin: 0;
}

#outlet-distance-label {
  margin: 0;
}

.advanced-settings {
  margin: 0;
}

.advanced-settings summary {
  cursor: pointer;
  color: var(--ink);
  font-size: 0.9rem;
  font-weight: 700;
}

.advanced-settings-grid {
  display: grid;
  margin-top: 8px;
}

.advanced-input-action {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  align-items: center;
}

.advanced-input-action button {
  min-height: 34px;
  padding: 6px 10px;
  font-size: 0.74rem;
}

.outlet-field-visual {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 10px;
}

.outlet-colorbar {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  justify-items: center;
  gap: 5px;
  min-width: 58px;
  padding: 8px 0;
}

.outlet-colorbar-ramp {
  width: 16px;
  min-height: 220px;
  border: 1px solid var(--line);
  background: linear-gradient(to top, rgb(0, 0, 255), rgb(128, 180, 128), rgb(255, 0, 0));
}

.outlet-colorbar-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  color: var(--ink-soft);
  white-space: nowrap;
}

.plot-surface {
  width: 100%;
  min-height: 430px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background:
    radial-gradient(circle at top left, rgba(15, 110, 242, 0.08), transparent 46%),
    linear-gradient(180deg, #fbfdff 0%, #f4f8ff 100%);
  overflow: hidden;
}

.plot-note {
  margin: 10px 0 0;
  font-size: 0.78rem;
  color: var(--ink-soft);
}

#cov-decay-plot .plot-container,
#cov-decay-plot .svg-container {
  border-radius: 10px;
}

#cov-decay-plot .modebar {
  right: 10px !important;
}

#text-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

pre {
  margin: 0;
  min-height: 110px;
  max-height: 220px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #1d334d;
  background: #f8fbff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px;
}

canvas {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fcfdff;
}

@media (max-width: 1080px) {
  .app-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .header-chips {
    flex-wrap: wrap;
  }

  main {
    grid-template-columns: 1fr;
  }

  #inspector-panel {
    order: 3;
  }

  #diagnostics-grid,
  #text-grid {
    grid-template-columns: 1fr;
  }

  .plot-toolbar {
    justify-content: space-between;
    flex-wrap: wrap;
  }

  .plot-toolbar select {
    flex: 1 1 220px;
    min-width: 0;
  }

  #graph-canvas-wrap {
    height: 380px;
  }
}