/* Terminal panel base styles — shared across all panes */

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--crt-bg);
  color: var(--crt-amber);
  font-family: var(--font-terminal);
  font-size: var(--font-size-base);
  line-height: 1.4;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: unset;
}

/* Layout Grid */
.app-container {
  display: grid;
  grid-template-columns: minmax(400px, 1fr) 1fr;
  grid-template-rows: auto 1fr auto;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
}

.app-header {
  grid-column: 1 / -1;
  grid-row: 1;
}

.control-panel {
  grid-column: 1;
  grid-row: 2;
  overflow-y: auto;
  padding: var(--space-4);
  border-right: var(--border-thin);
}

.visualizer-pane {
  grid-column: 2;
  grid-row: 2;
  padding: var(--space-4);
}

.dev-panel {
  grid-column: 2;
  grid-row: 2;
}

.system-console {
  grid-column: 1 / -1;
  grid-row: 3;
}

/* Placeholder content for empty panes */
.placeholder-content {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--crt-amber-dim);
  font-size: var(--font-size-sm);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-shadow:
    0 0 var(--crt-glow-radius-1) rgba(255, 176, 0, var(--crt-glow-opacity-2));
}

/* Scrollbar styling for terminal panels */
.control-panel::-webkit-scrollbar {
  width: 6px;
}

.control-panel::-webkit-scrollbar-track {
  background: var(--crt-bg-inset);
}

.control-panel::-webkit-scrollbar-thumb {
  background: var(--crt-border-bright);
  border-radius: 3px;
}

/* Selection color */
::selection {
  background: var(--crt-amber-dim);
  color: var(--crt-bg);
}

/* ============================================================
   DEV Panel — hidden by default, toggled by JS
   ============================================================ */

.dev-panel {
  display: none;
}

/* DEV panel scrollbar — 8px width, square corners */
.dev-panel::-webkit-scrollbar {
  width: 8px;
}

.dev-panel::-webkit-scrollbar-track {
  background: var(--crt-bg-inset);
}

.dev-panel::-webkit-scrollbar-thumb {
  background: var(--crt-border-bright);
  border-radius: 0;
}

/* ============================================================
   Progressive Boot Reveal
   ============================================================ */

.boot-hidden {
  opacity: 0;
  pointer-events: none;
}

.boot-reveal {
  opacity: 1;
  pointer-events: auto;
  transition: opacity 300ms ease;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .boot-reveal {
    transition: none;
  }
}