/* =========================================================
   CONTROL SYSTEM BUILDER — sim-gray, mission-control chrome
   Standalone page theme, independent of styles.css / styles-b.css
   ========================================================= */

:root {
    --csb-bg-app: #1c1f22;
    --csb-bg-bar: #17191b;
    --csb-bg-sidebar: #191b1e;
    --csb-bg-canvas: #202327;
    --csb-border: #2c3034;
    --csb-border-strong: #3a3f45;
    --csb-text: #eceeef;
    --csb-text-muted: #c7cace;
    --csb-text-dim: #5a6067;
    --csb-accent: #ff6b4a;
    --csb-accent-secondary: #4fd1e0;
}

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    margin: 0;
    background: var(--csb-bg-app);
    color: var(--csb-text);
    font-family: 'Courier New', monospace;
    overflow: hidden;
}

#csb-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.csb-divider {
    width: 1px;
    height: 18px;
    background: var(--csb-border);
}

/* ── Top bar ─────────────────────────────────────────────── */
#csb-topbar {
    flex: 0 0 auto;
    height: 52px;
    background: var(--csb-bg-bar);
    border-bottom: 1px solid var(--csb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

#csb-topbar-left,
#csb-topbar-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

#csb-back {
    color: var(--csb-text-dim);
    font-size: 12px;
    letter-spacing: .06em;
    text-decoration: none;
}
#csb-back:hover {
    color: var(--csb-accent-secondary);
}

#csb-title {
    font-size: 13px;
    font-weight: 700;
    letter-spacing: .08em;
}

#csb-badge {
    font-size: 11px;
    color: var(--csb-text-dim);
    background: #22262a;
    border: 1px solid var(--csb-border);
    padding: 2px 8px;
    border-radius: 2px;
}

#csb-live-badge {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--csb-accent);
    background: rgba(255, 107, 74, 0.12);
    border: 1px solid var(--csb-accent);
    padding: 2px 8px;
    border-radius: 2px;
    animation: csb-live-pulse 1.6s ease-in-out infinite;
}
@keyframes csb-live-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .55; }
}

#csb-live-badge.csb-live-badge-paused {
    animation: none;
    color: var(--csb-text-dim);
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--csb-border-strong);
}

/* ── Buttons ─────────────────────────────────────────────── */
.csb-btn {
    font-family: 'Courier New', monospace;
    font-size: 11px;
    letter-spacing: .06em;
    border-radius: 2px;
    cursor: pointer;
    background: transparent;
}

.csb-btn-secondary {
    padding: 6px 12px;
    border: 1px solid var(--csb-border-strong);
    color: var(--csb-text-muted);
}
.csb-btn-secondary:hover:not(:disabled) {
    border-color: var(--csb-accent-secondary);
    color: var(--csb-accent-secondary);
}
.csb-btn-secondary.active {
    border-color: var(--csb-accent-secondary);
    color: var(--csb-accent-secondary);
    background: rgba(79, 209, 224, 0.12);
}

.csb-btn-primary {
    padding: 6px 14px;
    border: 1px solid var(--csb-accent);
    color: var(--csb-accent);
    font-weight: 700;
}
.csb-btn-primary:hover:not(:disabled) {
    background: var(--csb-accent);
    color: var(--csb-bg-bar);
}
.csb-btn:disabled {
    opacity: .4;
    cursor: not-allowed;
}

/* ── Dropdown (Examples) ─────────────────────────────────── */
.csb-dropdown {
    position: relative;
}

.csb-dropdown-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    min-width: 240px;
    background: var(--csb-bg-sidebar);
    border: 1px solid var(--csb-border-strong);
    border-radius: 2px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    z-index: 20;
    padding: 4px 0;
}

.csb-dropdown-item {
    padding: 8px 14px;
    font-family: 'Courier New', monospace;
    font-size: 11.5px;
    color: var(--csb-text-muted);
    cursor: pointer;
    white-space: nowrap;
}
.csb-dropdown-item:hover {
    background: #202427;
    color: var(--csb-accent-secondary);
}

.csb-dropdown-empty {
    padding: 8px 14px;
    font-size: 11px;
    color: var(--csb-text-dim);
    font-style: italic;
}

.csb-icon-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--csb-border-strong);
    border-radius: 2px;
    background: transparent;
    color: var(--csb-text-muted);
    font-size: 13px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}
.csb-icon-btn:hover {
    border-color: var(--csb-accent-secondary);
    color: var(--csb-accent-secondary);
}

/* ── Body layout ─────────────────────────────────────────── */
#csb-body {
    flex: 1;
    display: flex;
    min-height: 0;
}

/* ── Sidebar / palette ───────────────────────────────────── */
#csb-sidebar {
    width: 236px;
    flex: 0 0 auto;
    background: var(--csb-bg-sidebar);
    border-right: 1px solid var(--csb-border);
    overflow-y: auto;
    padding: 14px 0;
}

#csb-sidebar-header {
    padding: 0 14px 10px;
    font-size: 10px;
    letter-spacing: .1em;
    color: var(--csb-text-dim);
}

.csb-category {
    border-top: 1px solid #24272b;
}

.csb-category-header {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 14px;
    font-family: 'Courier New', monospace;
    font-size: 11.5px;
    color: var(--csb-text-muted);
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
}

.csb-dot {
    width: 7px;
    height: 7px;
    border-radius: 1px;
    flex: 0 0 auto;
}

.csb-category-label {
    flex: 1;
}

.csb-chevron {
    color: var(--csb-text-dim);
}

.csb-category.collapsed .csb-category-list {
    display: none;
}

.csb-category-list {
    display: flex;
    flex-direction: column;
}

.csb-subgroup-label {
    padding: 8px 14px 4px 20px;
    font-family: 'Courier New', monospace;
    font-size: 9.5px;
    letter-spacing: .09em;
    color: var(--csb-text-dim);
    text-transform: uppercase;
}
.csb-subgroup-label:first-child {
    padding-top: 6px;
}

.csb-block {
    padding: 6px 14px 6px 20px;
    font-size: 11.5px;
    color: var(--csb-text-muted);
    border-left: 2px solid var(--csb-block-color, transparent);
    cursor: grab;
}
.csb-block:hover {
    background: #202427;
}
.csb-block:active {
    cursor: grabbing;
}

.csb-block-empty {
    color: var(--csb-text-dim);
    font-style: italic;
    cursor: default;
    border-left-color: transparent;
}
.csb-block-empty:hover {
    background: none;
}

/* ── Canvas ──────────────────────────────────────────────── */
#csb-canvas-wrap {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: var(--csb-bg-canvas);
}

#csb-canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* ── Debug panel ─────────────────────────────────────────── */
#csb-debug-panel {
    width: 280px;
    flex: 0 0 auto;
    background: var(--csb-bg-sidebar);
    border-left: 1px solid var(--csb-border);
    overflow-y: auto;
    padding: 16px 14px;
}
#csb-debug-panel:not([hidden]) {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#csb-debug-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    letter-spacing: .08em;
    color: var(--csb-accent-secondary);
    font-weight: 700;
}
#csb-debug-header .csb-icon-btn {
    width: 22px;
    height: 22px;
    font-size: 14px;
}

#csb-debug-hint {
    margin: 0;
    font-size: 10.5px;
    line-height: 1.5;
    color: var(--csb-text-dim);
}

#csb-debug-enable-row {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-top: 1px solid var(--csb-border);
    border-bottom: 1px solid var(--csb-border);
}
#csb-debug-enable-row label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11.5px;
    color: var(--csb-text-muted);
    cursor: pointer;
}

#csb-debug-fields {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.csb-debug-group-label {
    font-size: 10px;
    letter-spacing: .1em;
    color: var(--csb-text-dim);
    text-transform: uppercase;
    margin-top: 6px;
}

.csb-debug-field {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
}
.csb-debug-field label {
    font-size: 11px;
    color: var(--csb-text-muted);
}
.csb-debug-field input[type="number"] {
    width: 100px;
    background: var(--csb-bg-canvas);
    border: 1px solid var(--csb-border-strong);
    color: var(--csb-text);
    font-family: 'Courier New', monospace;
    font-size: 11px;
    padding: 4px 6px;
    border-radius: 2px;
}
.csb-debug-field input[type="number"]:focus {
    outline: none;
    border-color: var(--csb-accent-secondary);
}

/* ── Bottom bar ──────────────────────────────────────────── */
#csb-bottombar {
    flex: 0 0 auto;
    height: 52px;
    background: var(--csb-bg-bar);
    border-top: 1px solid var(--csb-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

#csb-stats {
    font-size: 11px;
    color: var(--csb-text-dim);
    letter-spacing: .06em;
}

#csb-bottombar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

#csb-zoom-label {
    font-size: 11px;
    color: var(--csb-text-muted);
    min-width: 36px;
    text-align: center;
}