:root {
  --bg-obsidian: #0a0b0d;
  --bg-panel: #0f1115;
  --bg-elevated: #14171d;
  --bg-input: #07080a;
  --border-grid: #262930;
  --border-bright: #3c414d;
  --text-primary: #d4d7dd;
  --text-bright: #f0f3f8;
  --text-muted: #6e7681;
  --accent-phosphor: #00ff9d;
  --accent-amber: #e5a93c;
  --accent-steel: #58a6ff;
  --accent-danger: #ff4d4d;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  border-radius: 0 !important;
}

html, body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-obsidian);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

a {
  color: var(--accent-phosphor);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Top Telemetry Bar */
.telemetry-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  padding: 8px 16px;
  background-color: var(--bg-panel);
  border-bottom: 1px solid var(--border-grid);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.telemetry-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.telemetry-item {
  color: var(--text-muted);
  white-space: nowrap;
}

.telemetry-item strong {
  color: var(--text-bright);
  font-weight: 600;
}

.telemetry-item .status-ok {
  color: var(--accent-phosphor);
}

.telemetry-item .status-warn {
  color: var(--accent-amber);
}

.telemetry-item .status-err {
  color: var(--accent-danger);
}

/* Main Structural Shell */
.app-shell {
  max-width: 1360px;
  margin: 0 auto;
  border-left: 1px solid var(--border-grid);
  border-right: 1px solid var(--border-grid);
  min-height: calc(100vh - 35px);
  display: flex;
  flex-direction: column;
}

.brand-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-grid);
  background: linear-gradient(180deg, #101318 0%, #0a0b0d 100%);
}

.brand-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.brand-title h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-bright);
  text-transform: uppercase;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Navigation Tabs */
.nav-tabs {
  display: flex;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-grid);
  background-color: var(--bg-panel);
}

.nav-tab {
  background: transparent;
  color: var(--text-muted);
  border: none;
  border-right: 1px solid var(--border-grid);
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background-color 0.1s, color 0.1s;
}

.nav-tab:hover {
  background-color: var(--bg-elevated);
  color: var(--text-primary);
}

.nav-tab.active {
  background-color: var(--bg-obsidian);
  color: var(--accent-phosphor);
  box-shadow: inset 0 2px 0 var(--accent-phosphor);
}

/* Panels & Grid Layout */
.panel-grid {
  display: grid;
  grid-template-columns: 1fr;
  flex: 1;
}

.panel-grid.split-2 {
  grid-template-columns: 380px 1fr;
}

@media (max-width: 920px) {
  .panel-grid.split-2 {
    grid-template-columns: 1fr;
  }
}

.panel {
  padding: 20px;
  border-bottom: 1px solid var(--border-grid);
}

.panel + .panel {
  border-left: 1px solid var(--border-grid);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-grid);
}

.panel-title {
  margin: 0;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-bright);
}

.panel-badge {
  font-size: 11px;
  padding: 2px 6px;
  border: 1px solid var(--border-bright);
  color: var(--accent-amber);
  background-color: var(--bg-input);
}

/* Form Controls & Buttons */
.field-row {
  margin-bottom: 14px;
}

.field-label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 5px;
}

input[type="text"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  background-color: var(--bg-input);
  color: var(--text-bright);
  border: 1px solid var(--border-grid);
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--accent-phosphor);
}

textarea {
  resize: vertical;
  min-height: 110px;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.btn {
  background-color: var(--bg-elevated);
  color: var(--text-bright);
  border: 1px solid var(--border-bright);
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
}

.btn:hover:not(:disabled) {
  border-color: var(--accent-phosphor);
  color: var(--accent-phosphor);
}

.btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary {
  background-color: #092419;
  border-color: var(--accent-phosphor);
  color: var(--accent-phosphor);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--accent-phosphor);
  color: #050607;
}

.btn-amber {
  background-color: #241b09;
  border-color: var(--accent-amber);
  color: var(--accent-amber);
}

.btn-amber:hover:not(:disabled) {
  background-color: var(--accent-amber);
  color: #050607;
}

/* Dropzone */
.dropzone {
  border: 1px dashed var(--border-bright);
  background-color: var(--bg-input);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  margin-bottom: 16px;
  transition: border-color 0.15s, background-color 0.15s;
}

.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent-phosphor);
  background-color: #0c1713;
}

.dropzone-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-bright);
  margin-bottom: 4px;
}

.dropzone-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* Chunk Matrix & Progress */
.chunk-matrix {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 10px;
  background-color: var(--bg-input);
  border: 1px solid var(--border-grid);
  min-height: 40px;
  margin-bottom: 12px;
}

.chunk-cell {
  width: 14px;
  height: 14px;
  border: 1px solid var(--border-bright);
  background-color: #12151b;
  display: inline-block;
}

.chunk-cell.mining {
  background-color: var(--accent-amber);
  border-color: var(--accent-amber);
}

.chunk-cell.done {
  background-color: var(--accent-phosphor);
  border-color: var(--accent-phosphor);
}

.chunk-cell.error {
  background-color: var(--accent-danger);
  border-color: var(--accent-danger);
}

/* Terminal Output & Code Boxes */
.terminal-box {
  background-color: var(--bg-input);
  border: 1px solid var(--border-grid);
  padding: 12px;
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  color: var(--text-primary);
}

.terminal-log {
  background-color: var(--bg-input);
  border: 1px solid var(--border-grid);
  padding: 10px 12px;
  font-size: 11px;
  max-height: 220px;
  overflow-y: auto;
  color: var(--text-muted);
  white-space: pre-wrap;
}

.kv-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 14px;
  font-size: 12px;
}

.kv-table th,
.kv-table td {
  border: 1px solid var(--border-grid);
  padding: 7px 10px;
  text-align: left;
  vertical-align: top;
}

.kv-table th {
  width: 150px;
  color: var(--text-muted);
  background-color: var(--bg-panel);
  text-transform: uppercase;
  font-size: 11px;
  font-weight: 600;
}

.kv-table td {
  color: var(--text-bright);
  word-break: break-all;
}

/* Split-Pane Message / Board List */
.list-pane {
  border: 1px solid var(--border-grid);
  background-color: var(--bg-input);
  max-height: 520px;
  overflow-y: auto;
}

.list-item {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-grid);
  cursor: pointer;
}

.list-item:hover {
  background-color: var(--bg-elevated);
}

.list-item.active {
  background-color: #0e1d17;
  border-left: 3px solid var(--accent-phosphor);
}

.list-item-header {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 3px;
}

.list-item-subject {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-bright);
}

.hidden {
  display: none !important;
}