*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --void: #07080D;
  --space: #0B0D14;
  --space-2: #0F1119;
  --space-3: #131620;
  --space-4: #171B27;
  --space-5: #1C2030;
  --space-6: #212539;
  --violet: #7C3AED;
  --violet-2: #6D28D9;
  --violet-light: rgba(124, 58, 237, 0.15);
  --violet-glow: rgba(124, 58, 237, 0.08);
  --violet-border: rgba(124, 58, 237, 0.3);
  --cyan: #22D3EE;
  --cyan-dim: #0E7490;
  --cyan-glow: rgba(34, 211, 238, 0.1);
  --pink: #EC4899;
  --amber: #F59E0B;
  --green: #10B981;
  --red: #EF4444;
  --text: #CBD5E1;
  --text-2: #64748B;
  --text-3: #334155;
  --text-4: #1E293B;
  --border: #1E2436;
  --border-2: #252B3D;
  --border-3: #2D3450;
  --font-ui: 'Space Grotesk', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --topbar-h: 48px;
  --status-h: 26px;
  --divider-size: 5px;
  --divider-hit: 16px;
  --r: 5px;
  --r-lg: 10px;
  --trans: 130ms ease;
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--void);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

.shell {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: var(--topbar-h);
  flex-shrink: 0;
  background: var(--space);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 12px;
  position: relative;
  z-index: 100;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

.topbar-center {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 9px;
}

.brand-icon {
  width: 22px;
  height: 22px;
  position: relative;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bi-h,
.bi-v {
  position: absolute;
  border-radius: 1px;
  background: linear-gradient(135deg, var(--violet), var(--cyan));
}

.bi-h {
  width: 20px;
  height: 8px;
  top: 2px;
}

.bi-v {
  width: 8px;
  height: 20px;
  right: 2px;
}

.brand-name {
  font-family: var(--font-ui);
  font-size: 15px;
  font-weight: 700;
  color: #E2E8F0;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  padding: 2px 6px;
  background: var(--space-3);
  border: 1px solid var(--border-2);
  border-radius: 3px;
  margin-left: 4px;
}

.preset-row {
  display: flex;
  align-items: center;
  gap: 3px;
}

.preset-label {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--text-3);
  letter-spacing: 0.14em;
  margin-right: 4px;
}

.preset-btn {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  background: var(--space-3);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  padding: 4px 10px;
  border-radius: var(--r);
  cursor: pointer;
  transition: all var(--trans);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.preset-btn:hover {
  background: var(--space-4);
  color: var(--text);
  border-color: var(--border-3);
}

.preset-btn.active {
  background: var(--violet-light);
  border-color: var(--violet-border);
  color: #A78BFA;
}

.mode-toggle {
  display: flex;
  border: 1px solid var(--border-2);
  border-radius: var(--r);
  overflow: hidden;
}

.mode-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  background: none;
  border: none;
  color: var(--text-2);
  padding: 5px 10px;
  cursor: pointer;
  transition: all var(--trans);
  border-right: 1px solid var(--border-2);
}

.mode-btn:last-child {
  border-right: none;
}

.mode-btn:hover {
  background: var(--space-3);
  color: var(--text);
}

.mode-btn.active {
  background: var(--violet-light);
  color: #A78BFA;
}

.topbar-sep {
  width: 1px;
  height: 20px;
  background: var(--border-2);
  flex-shrink: 0;
  margin: 0 2px;
}

.tb-btn {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-2);
  padding: 5px 10px;
  border-radius: var(--r);
  cursor: pointer;
  transition: all var(--trans);
  white-space: nowrap;
}

.tb-btn:hover {
  background: var(--space-3);
  color: var(--text);
  border-color: var(--border-3);
}

.tb-btn.flash {
  border-color: var(--green);
  color: var(--green);
  background: rgba(16, 185, 129, 0.08);
}

.snap-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.snap-toggle input {
  display: none;
}

.st-track {
  width: 32px;
  height: 16px;
  border-radius: 999px;
  background: var(--border-2);
  display: flex;
  align-items: center;
  padding: 2px;
  transition: background var(--trans);
}

.snap-toggle input:checked+.st-track {
  background: var(--violet-2);
}

.st-thumb {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
  transition: transform var(--trans);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.snap-toggle input:checked+.st-track>.st-thumb {
  transform: translateX(16px);
}

.st-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-2);
  letter-spacing: 0.06em;
}

.workspace {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--void);
}

.split-root {
  width: 100%;
  height: 100%;
  display: flex;
}

.split-container {
  display: flex;
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
}

.split-container.dir-horizontal {
  flex-direction: row;
}

.split-container.dir-vertical {
  flex-direction: column;
}

.split-pane {
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  transition: none;
  min-width: 0;
  min-height: 0;
}

.split-pane.animating {
  transition: flex-basis 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.split-pane.collapsed {
  flex-basis: 0 !important;
  overflow: hidden;
}

.pane-content {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pane-header {
  height: 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  background: var(--space-2);
  border-bottom: 1px solid var(--border);
  user-select: none;
}

.ph-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ph-right {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pane-dots {
  display: flex;
  gap: 5px;
}

.pd {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  cursor: pointer;
}

.pd-close {
  background: #EF4444;
}

.pd-min {
  background: #F59E0B;
}

.pd-max {
  background: #10B981;
}

.pane-title {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.pane-size-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-3);
  background: var(--space-3);
  border: 1px solid var(--border);
  padding: 1px 5px;
  border-radius: 3px;
  letter-spacing: 0.04em;
  transition: all 0.15s ease;
}

.pane-size-badge.active {
  color: #A78BFA;
  border-color: var(--violet-border);
  background: var(--violet-glow);
}

.ph-btn {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-3);
  font-size: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--trans);
}

.ph-btn:hover {
  background: var(--space-4);
  color: var(--text);
}

.pane-body {
  flex: 1;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.pane-inner-split {
  width: 100%;
  height: 100%;
  display: flex;
}

.pane-demo-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px;
  text-align: center;
  height: 100%;
  pointer-events: none;
}

.pdc-icon {
  font-size: 2rem;
  line-height: 1;
  filter: drop-shadow(0 0 12px currentColor);
}

.pdc-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text-2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.pdc-meta {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.06em;
}

.pdc-grid {
  width: 100%;
  max-width: 180px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
  margin-top: 6px;
}

.pdc-stat {
  background: var(--space-3);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 6px 8px;
  text-align: center;
}

.pdc-stat-val {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.pdc-stat-lbl {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--text-3);
  margin-top: 2px;
  letter-spacing: 0.06em;
}

.pane-collapsed-bar {
  display: none;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: var(--space-2);
  cursor: pointer;
}

.split-pane.collapsed .pane-content {
  display: none;
}

.split-pane.collapsed .pane-collapsed-bar {
  display: flex;
}

.pcb-label {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.star-field {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.star {
  position: absolute;
  border-radius: 50%;
  background: #fff;
  animation: twinkle var(--dur, 3s) ease-in-out infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes twinkle {

  0%,
  100% {
    opacity: var(--base, 0.3);
    transform: scale(1);
  }

  50% {
    opacity: var(--peak, 0.8);
    transform: scale(1.2);
  }
}

.nebula-blob {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(60px);
  opacity: 0.12;
}

.divider {
  position: relative;
  flex-shrink: 0;
  background: var(--border);
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--trans);
  user-select: none;
  touch-action: none;
}

.divider.dir-horizontal {
  width: var(--divider-size);
  height: 100%;
  cursor: col-resize;
}

.divider.dir-vertical {
  height: var(--divider-size);
  width: 100%;
  cursor: row-resize;
}

.divider::before {
  content: '';
  position: absolute;
  z-index: -1;
}

.divider.dir-horizontal::before {
  width: var(--divider-hit);
  height: 100%;
  left: 50%;
  transform: translateX(-50%);
}

.divider.dir-vertical::before {
  height: var(--divider-hit);
  width: 100%;
  top: 50%;
  transform: translateY(-50%);
}

.divider:hover,
.divider.dragging {
  background: var(--violet-2);
}

.divider.dragging {
  background: var(--violet);
  box-shadow: 0 0 8px var(--violet-border), 0 0 20px rgba(124, 58, 237, 0.2);
}

.divider-grip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex-direction: column;
  pointer-events: none;
}

.divider.dir-horizontal .divider-grip {
  flex-direction: column;
}

.divider.dir-vertical .divider-grip {
  flex-direction: row;
}

.dg-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--text-3);
  transition: background var(--trans);
}

.divider:hover .dg-dot,
.divider.dragging .dg-dot {
  background: #A78BFA;
}

.divider-snap-zone {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.divider.snapping {
  background: var(--cyan);
  box-shadow: 0 0 8px var(--cyan-glow);
}

.divider.snapping .dg-dot {
  background: var(--cyan);
}

.add-split-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1.5px dashed var(--border-3);
  background: none;
  color: var(--text-3);
  font-size: 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--trans);
  z-index: 5;
  pointer-events: auto;
}

.add-split-btn:hover {
  border-color: var(--violet-border);
  color: #A78BFA;
  background: var(--violet-glow);
}

.context-menu {
  position: fixed;
  z-index: 500;
  background: var(--space-3);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  padding: 5px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  min-width: 180px;
  animation: ctxIn 0.12s ease both;
}

@keyframes ctxIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.cm-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: var(--r);
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
  transition: all var(--trans);
  white-space: nowrap;
}

.cm-item:hover {
  background: var(--space-5);
  color: var(--text);
}

.cm-item .ci-icon {
  font-size: 12px;
  width: 16px;
  text-align: center;
  color: var(--text-3);
}

.cm-item:hover .ci-icon {
  color: #A78BFA;
}

.cm-sep {
  height: 1px;
  background: var(--border-2);
  margin: 3px 0;
}

.cm-item.danger {
  color: #FCA5A5;
}

.cm-item.danger:hover {
  background: rgba(239, 68, 68, 0.1);
}

.cm-item.danger .ci-icon {
  color: #FCA5A5;
}

.statusbar {
  height: var(--status-h);
  flex-shrink: 0;
  background: var(--space-2);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 0;
  font-family: var(--font-mono);
  font-size: 10px;
}

.sb-left {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}

.sb-center {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

.sb-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
  justify-content: flex-end;
}

.sb-chip {
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.sb-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--border-3);
}

.drag-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--violet-light);
  border: 1px solid var(--violet-border);
  border-radius: 999px;
  padding: 2px 12px;
  animation: diIn 0.15s ease both;
}

@keyframes diIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.di-label {
  color: #A78BFA;
  letter-spacing: 0.06em;
  font-size: 9px;
}

.di-size {
  color: var(--cyan);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.kbd-hint {
  position: fixed;
  bottom: 46px;
  right: 16px;
  z-index: 200;
  background: var(--space-3);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  opacity: 0.7;
  transition: opacity var(--trans);
  pointer-events: none;
}

.kbd-hint:hover {
  opacity: 1;
}

.kh-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  color: var(--text-2);
}

.kh-row span {
  color: var(--text-3);
  font-size: 9px;
}

kbd {
  font-family: var(--font-mono);
  font-size: 9px;
  background: var(--space-4);
  border: 1px solid var(--border-2);
  border-radius: 3px;
  padding: 1px 5px;
  color: var(--text-2);
  white-space: nowrap;
}

.hidden {
  display: none !important;
}

@keyframes panePop {
  from {
    opacity: 0;
    transform: scale(0.97);
  }

  to {
    opacity: 1;
    transform: none;
  }
}

.pane-content {
  animation: panePop 0.2s ease both;
}

.divider:focus-visible {
  outline: none;
  background: var(--violet);
}

body.resizing-h {
  cursor: col-resize !important;
}

body.resizing-v {
  cursor: row-resize !important;
}

body.resizing-h * {
  user-select: none !important;
  pointer-events: none !important;
}

body.resizing-v * {
  user-select: none !important;
  pointer-events: none !important;
}

body.resizing-h .divider,
body.resizing-v .divider {
  pointer-events: auto !important;
}

@media (max-width: 680px) {
  .topbar-center {
    display: none;
  }

  .kbd-hint {
    display: none;
  }
}