/* ═══════════════════════════════════════════════════════════════════
   CDAP SDK Studio — Visual Node Editor Styles
   Phase 14 of BetterDesk 3.0 Roadmap
   ═══════════════════════════════════════════════════════════════════ */

/* ── CSS Variables ─────────────────────────────────────────────── */
:root {
    --studio-bg:            var(--bg-primary, #0d1117);
    --studio-panel-bg:      var(--bg-secondary, #161b22);
    --studio-panel-border:  var(--border-primary, #30363d);
    --studio-canvas-bg:     #0a0e14;
    --studio-grid-color:    rgba(110, 118, 129, 0.12);
    --studio-toolbar-bg:    var(--bg-tertiary, #1c2128);
    --studio-text:          var(--text-primary, #e6edf3);
    --studio-text-muted:    var(--text-secondary, #8b949e);
    --studio-accent:        var(--accent-blue, #58a6ff);
    --studio-green:         #3fb950;
    --studio-yellow:        #d29922;
    --studio-red:           #f85149;
    --studio-orange:        #db6d28;
    --studio-purple:        #bc8cff;

    /* Node colors */
    --studio-node-source:   #1f6feb;
    --studio-node-process:  #9e6a03;
    --studio-node-output:   #238636;
    --studio-node-selected: var(--studio-accent);
    --studio-node-bg:       #21262d;
    --studio-node-border:   #30363d;

    /* Wire colors */
    --studio-wire-data:     var(--studio-accent);
    --studio-wire-control:  var(--studio-orange);
    --studio-wire-error:    var(--studio-red);

    /* Sizes */
    --studio-palette-width: 220px;
    --studio-right-width:   280px;
    --studio-toolbar-h:     42px;
    --studio-statusbar-h:   28px;
    --studio-node-w:        180px;
    --studio-node-h:        52px;
    --studio-port-r:        6px;
}

/* ── Light theme overrides ──────────────────────────────────────── */
[data-theme="light"] {
    --studio-bg:            #ffffff;
    --studio-panel-bg:      #f6f8fa;
    --studio-panel-border:  #d0d7de;
    --studio-canvas-bg:     #f0f3f6;
    --studio-grid-color:    rgba(0, 0, 0, 0.06);
    --studio-toolbar-bg:    #f6f8fa;
    --studio-text:          #1f2328;
    --studio-text-muted:    #656d76;
    --studio-node-bg:       #ffffff;
    --studio-node-border:   #d0d7de;
}

/* ── Container ──────────────────────────────────────────────────── */
.studio-container {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    background: var(--studio-bg);
    overflow: hidden;
    position: relative;
}

/* ── Back button ────────────────────────────────────────────────── */
.studio-back-btn {
    text-decoration: none;
    color: var(--studio-text-muted);
}
.studio-back-btn:hover {
    color: var(--studio-text);
    background: rgba(110, 118, 129, 0.15);
}

/* ── Toolbar ────────────────────────────────────────────────────── */
.studio-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--studio-toolbar-h);
    padding: 0 8px;
    background: var(--studio-toolbar-bg);
    border-bottom: 1px solid var(--studio-panel-border);
    flex-shrink: 0;
    gap: 4px;
}

.studio-toolbar-left,
.studio-toolbar-right {
    display: flex;
    align-items: center;
    gap: 2px;
}

.studio-tool-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--studio-text-muted);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
}

.studio-tool-btn:hover {
    background: rgba(110, 118, 129, 0.15);
    color: var(--studio-text);
}

.studio-tool-btn .material-icons {
    font-size: 18px;
}

.studio-tool-btn.studio-tool-sm {
    padding: 3px 4px;
}

.studio-tool-btn.studio-tool-sm .material-icons {
    font-size: 16px;
}

.studio-tool-btn.studio-tool-accent {
    color: var(--studio-green);
}
.studio-tool-btn.studio-tool-accent:hover {
    background: rgba(63, 185, 80, 0.15);
    color: var(--studio-green);
}

.studio-tool-label {
    font-size: 12px;
}

.studio-toolbar-sep {
    width: 1px;
    height: 20px;
    background: var(--studio-panel-border);
    margin: 0 4px;
}

.studio-flow-name {
    font-size: 12px;
    color: var(--studio-text-muted);
    font-style: italic;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.studio-zoom-group {
    display: flex;
    align-items: center;
    gap: 2px;
    background: rgba(110, 118, 129, 0.08);
    border-radius: 4px;
    padding: 0 2px;
}

.studio-zoom-label {
    font-size: 11px;
    color: var(--studio-text-muted);
    min-width: 36px;
    text-align: center;
    font-variant-numeric: tabular-nums;
}

/* ── Workspace (3-column) ───────────────────────────────────────── */
.studio-workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* ── Palette Panel (left) ───────────────────────────────────────── */
.studio-palette {
    width: var(--studio-palette-width);
    min-width: 180px;
    background: var(--studio-panel-bg);
    border-right: 1px solid var(--studio-panel-border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    flex-shrink: 0;
}

.studio-panel-header {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 600;
    color: var(--studio-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--studio-panel-border);
}

.studio-panel-header .material-icons {
    font-size: 16px;
}

.studio-palette-search {
    margin: 8px;
    padding: 6px 10px;
    background: var(--studio-canvas-bg);
    border: 1px solid var(--studio-panel-border);
    border-radius: 4px;
    color: var(--studio-text);
    font-size: 12px;
    outline: none;
}

.studio-palette-search:focus {
    border-color: var(--studio-accent);
}

.studio-palette-search::placeholder {
    color: var(--studio-text-muted);
}

.studio-palette-category {
    border-bottom: 1px solid var(--studio-panel-border);
}

.studio-palette-cat-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    padding: 8px 12px;
    border: none;
    background: transparent;
    color: var(--studio-text);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.studio-palette-cat-btn:hover {
    background: rgba(110, 118, 129, 0.1);
}

.studio-palette-cat-btn .material-icons {
    font-size: 16px;
}

.studio-palette-cat-btn[data-cat="sources"] .material-icons:first-child { color: var(--studio-node-source); }
.studio-palette-cat-btn[data-cat="processing"] .material-icons:first-child { color: var(--studio-yellow); }
.studio-palette-cat-btn[data-cat="outputs"] .material-icons:first-child { color: var(--studio-node-output); }

.studio-cat-chevron {
    margin-left: auto;
    font-size: 18px !important;
    transition: transform 0.2s;
}

.studio-palette-category.collapsed .studio-cat-chevron {
    transform: rotate(-90deg);
}

.studio-palette-category.collapsed .studio-palette-items {
    display: none;
}

.studio-palette-items {
    padding: 4px 8px 8px;
}

.studio-palette-node {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: grab;
    font-size: 12px;
    color: var(--studio-text);
    transition: background 0.15s;
    user-select: none;
}

.studio-palette-node:hover {
    background: rgba(110, 118, 129, 0.15);
}

.studio-palette-node:active {
    cursor: grabbing;
}

.studio-palette-node .studio-node-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.studio-palette-node[data-cat="sources"] .studio-node-dot  { background: var(--studio-node-source); }
.studio-palette-node[data-cat="processing"] .studio-node-dot { background: var(--studio-yellow); }
.studio-palette-node[data-cat="outputs"] .studio-node-dot    { background: var(--studio-node-output); }

.studio-palette-node .studio-node-icon {
    font-size: 16px;
    color: var(--studio-text-muted);
}

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

.studio-canvas-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.studio-grid-rect {
    pointer-events: all;
}

.studio-canvas-svg.no-grid .studio-grid-rect {
    fill: transparent;
}

/* ── Nodes on canvas ────────────────────────────────────────────── */
.studio-node {
    cursor: move;
}

.studio-node-body {
    fill: var(--studio-node-bg);
    stroke: var(--studio-node-border);
    stroke-width: 1.5;
    rx: 6;
    ry: 6;
    transition: stroke 0.15s;
}

.studio-node.selected .studio-node-body {
    stroke: var(--studio-node-selected);
    stroke-width: 2;
}

.studio-node.running .studio-node-body {
    stroke: var(--studio-green);
    stroke-dasharray: 4 2;
    animation: studio-node-pulse 1s infinite;
}

.studio-node.error .studio-node-body {
    stroke: var(--studio-red);
}

@keyframes studio-node-pulse {
    0%, 100% { stroke-opacity: 1; }
    50% { stroke-opacity: 0.5; }
}

.studio-node-accent {
    width: 4px;
    rx: 6;
    ry: 6;
}

.studio-node[data-category="sources"] .studio-node-accent   { fill: var(--studio-node-source); }
.studio-node[data-category="processing"] .studio-node-accent { fill: var(--studio-yellow); }
.studio-node[data-category="outputs"] .studio-node-accent    { fill: var(--studio-node-output); }

.studio-node-label {
    fill: var(--studio-text);
    font-size: 12px;
    font-family: inherit;
    pointer-events: none;
}

.studio-node-type {
    fill: var(--studio-text-muted);
    font-size: 10px;
    font-family: inherit;
    pointer-events: none;
}

.studio-node-icon {
    fill: var(--studio-text-muted);
    font-family: 'Material Icons';
    font-size: 16px;
    pointer-events: none;
}

/* Ports */
.studio-port {
    fill: var(--studio-node-border);
    stroke: var(--studio-canvas-bg);
    stroke-width: 2;
    cursor: crosshair;
    transition: fill 0.15s, r 0.15s;
}

.studio-port:hover {
    fill: var(--studio-accent);
    r: 8;
}

.studio-port-in { /* left side */ }
.studio-port-out { /* right side */ }

/* ── Wires ──────────────────────────────────────────────────────── */
.studio-wire {
    fill: none;
    stroke: var(--studio-wire-data);
    stroke-width: 2;
    stroke-linecap: round;
    pointer-events: stroke;
    cursor: pointer;
    transition: stroke-width 0.15s;
}

.studio-wire:hover {
    stroke-width: 3;
}

.studio-wire.wire-error {
    stroke: var(--studio-wire-error);
}

.studio-wire.wire-control {
    stroke: var(--studio-wire-control);
    stroke-dasharray: 6 3;
}

.studio-wire.selected {
    stroke-width: 3;
    stroke: var(--studio-accent);
}

.studio-wire.running {
    stroke-dasharray: 8 4;
    animation: studio-wire-flow 0.8s linear infinite;
}

@keyframes studio-wire-flow {
    from { stroke-dashoffset: 0; }
    to { stroke-dashoffset: -12; }
}

.studio-temp-wire {
    stroke: var(--studio-accent);
    stroke-width: 2;
    stroke-dasharray: 6 3;
    opacity: 0.6;
    pointer-events: none;
}

/* ── Selection Box ──────────────────────────────────────────────── */
.studio-select-box {
    position: absolute;
    border: 1px solid var(--studio-accent);
    background: rgba(88, 166, 255, 0.08);
    pointer-events: none;
    z-index: 10;
}

/* ── Minimap ────────────────────────────────────────────────────── */
.studio-minimap {
    position: absolute;
    bottom: 12px;
    right: 12px;
    width: 160px;
    height: 100px;
    background: var(--studio-panel-bg);
    border: 1px solid var(--studio-panel-border);
    border-radius: 6px;
    overflow: hidden;
    opacity: 0.85;
    transition: opacity 0.2s;
    z-index: 5;
}

.studio-minimap:hover {
    opacity: 1;
}

.studio-minimap canvas {
    width: 100%;
    height: 100%;
}

.studio-minimap-viewport {
    position: absolute;
    border: 1.5px solid var(--studio-accent);
    background: rgba(88, 166, 255, 0.08);
    pointer-events: none;
}

/* ── Empty State ────────────────────────────────────────────────── */
.studio-empty-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--studio-text-muted);
    pointer-events: none;
    z-index: 2;
}

.studio-empty-state .material-icons {
    font-size: 56px;
    opacity: 0.3;
}

.studio-empty-state h3 {
    margin: 12px 0 6px;
    font-size: 16px;
    color: var(--studio-text);
    font-weight: 500;
}

.studio-empty-state p {
    font-size: 13px;
    margin: 0 0 16px;
}

.studio-empty-state .studio-empty-actions {
    pointer-events: auto;
}

/* ── Right Panel ────────────────────────────────────────────────── */
.studio-right-panel {
    width: var(--studio-right-width);
    min-width: 220px;
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--studio-panel-border);
    background: var(--studio-panel-bg);
    flex-shrink: 0;
}

/* ── Inspector ──────────────────────────────────────────────────── */
.studio-inspector {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-bottom: 1px solid var(--studio-panel-border);
}

.studio-inspector-body {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

.studio-inspector-empty {
    text-align: center;
    padding: 32px 16px;
    color: var(--studio-text-muted);
}

.studio-inspector-empty .material-icons {
    font-size: 36px;
    opacity: 0.3;
}

.studio-inspector-empty p {
    font-size: 12px;
    margin-top: 8px;
}

/* Inspector form fields */
.studio-field {
    margin-bottom: 12px;
}

.studio-field label {
    display: block;
    font-size: 11px;
    color: var(--studio-text-muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.studio-field input,
.studio-field select,
.studio-field textarea {
    width: 100%;
    padding: 6px 8px;
    background: var(--studio-canvas-bg);
    border: 1px solid var(--studio-panel-border);
    border-radius: 4px;
    color: var(--studio-text);
    font-size: 12px;
    font-family: inherit;
    outline: none;
    box-sizing: border-box;
}

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

.studio-field textarea {
    resize: vertical;
    min-height: 60px;
}

.studio-field-row {
    display: flex;
    gap: 8px;
}

.studio-field-row .studio-field {
    flex: 1;
}

.studio-inspector-section {
    font-size: 11px;
    font-weight: 600;
    color: var(--studio-text-muted);
    margin: 16px 0 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--studio-panel-border);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.studio-inspector-connections {
    font-size: 12px;
    color: var(--studio-text-muted);
}

.studio-inspector-connections span {
    display: block;
    padding: 2px 0;
}

.studio-delete-node-btn {
    width: 100%;
    padding: 6px;
    margin-top: 16px;
    background: transparent;
    border: 1px solid var(--studio-red);
    border-radius: 4px;
    color: var(--studio-red);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s;
}

.studio-delete-node-btn:hover {
    background: rgba(248, 81, 73, 0.12);
}

/* ── Console ────────────────────────────────────────────────────── */
.studio-console {
    height: 180px;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.studio-console-header {
    position: relative;
}

.studio-console-clear {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--studio-text-muted);
    cursor: pointer;
    padding: 2px;
    border-radius: 3px;
}

.studio-console-clear:hover {
    background: rgba(110, 118, 129, 0.15);
    color: var(--studio-text);
}

.studio-console-clear .material-icons {
    font-size: 16px;
}

.studio-console-body {
    flex: 1;
    overflow-y: auto;
    padding: 6px 10px;
    font-family: 'SF Mono', 'Monaco', 'Consolas', monospace;
    font-size: 11px;
    line-height: 1.5;
}

.studio-console-line {
    display: flex;
    gap: 6px;
    padding: 1px 0;
}

.studio-console-time {
    color: var(--studio-text-muted);
    flex-shrink: 0;
    min-width: 50px;
}

.studio-console-msg {
    word-break: break-word;
}

.studio-console-info .studio-console-msg { color: var(--studio-text-muted); }
.studio-console-success .studio-console-msg { color: var(--studio-green); }
.studio-console-warn .studio-console-msg { color: var(--studio-yellow); }
.studio-console-error .studio-console-msg { color: var(--studio-red); }
.studio-console-data .studio-console-msg { color: var(--studio-purple); }

/* ── Status Bar ─────────────────────────────────────────────────── */
.studio-statusbar {
    display: flex;
    align-items: center;
    height: var(--studio-statusbar-h);
    padding: 0 12px;
    background: var(--studio-toolbar-bg);
    border-top: 1px solid var(--studio-panel-border);
    font-size: 11px;
    color: var(--studio-text-muted);
    flex-shrink: 0;
    gap: 16px;
}

.studio-status-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.studio-status-item .material-icons {
    font-size: 14px;
}

.studio-status-item b {
    color: var(--studio-text);
    font-weight: 600;
}

.studio-status-sep {
    flex: 1;
}

.studio-status-right {
    margin-left: auto;
}

.studio-status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
}

.studio-status-ready    { background: var(--studio-green); }
.studio-status-running  { background: var(--studio-accent); animation: studio-dot-pulse 1s infinite; }
.studio-status-error    { background: var(--studio-red); }
.studio-status-draft    { background: var(--studio-text-muted); }

@keyframes studio-dot-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ── Modals ──────────────────────────────────────────────────────── */
.modal-lg {
    max-width: 700px;
    width: 95%;
}

.studio-flow-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 400px;
    overflow-y: auto;
}

.studio-flow-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--studio-canvas-bg);
    border: 1px solid var(--studio-panel-border);
    border-radius: 6px;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
}

.studio-flow-item:hover {
    border-color: var(--studio-accent);
    background: rgba(88, 166, 255, 0.05);
}

.studio-flow-item-info {
    flex: 1;
    min-width: 0;
}

.studio-flow-item-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--studio-text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.studio-flow-item-desc {
    font-size: 12px;
    color: var(--studio-text-muted);
    margin-top: 2px;
}

.studio-flow-item-meta {
    font-size: 11px;
    color: var(--studio-text-muted);
    margin-top: 4px;
}

.studio-flow-item-actions {
    display: flex;
    gap: 4px;
}

.studio-flow-item-actions button {
    background: none;
    border: none;
    color: var(--studio-text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
}

.studio-flow-item-actions button:hover {
    background: rgba(110, 118, 129, 0.15);
    color: var(--studio-text);
}

.studio-flow-item-actions button.danger:hover {
    color: var(--studio-red);
}

.studio-flow-item-actions .material-icons {
    font-size: 18px;
}

/* Template grid */
.studio-template-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
}

.studio-template-card {
    padding: 16px;
    background: var(--studio-canvas-bg);
    border: 1px solid var(--studio-panel-border);
    border-radius: 8px;
    cursor: pointer;
    transform: translateY(0);
    transition: border-color 0.15s, transform 0.15s;
}

.studio-template-card:hover {
    border-color: var(--studio-accent);
    transform: translateY(-1px);
}

.studio-template-card .material-icons {
    font-size: 28px;
    color: var(--studio-accent);
    margin-bottom: 8px;
}

.studio-template-card h4 {
    font-size: 14px;
    font-weight: 500;
    color: var(--studio-text);
    margin: 0 0 4px;
}

.studio-template-card p {
    font-size: 12px;
    color: var(--studio-text-muted);
    margin: 0;
    line-height: 1.4;
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 1200px) {
    :root {
        --studio-palette-width: 180px;
        --studio-right-width: 240px;
    }
    .studio-tool-label { display: none; }
}

@media (max-width: 900px) {
    .studio-palette { display: none; }
    .studio-right-panel { display: none; }
}

@media (max-width: 600px) {
    .studio-toolbar { padding: 0 4px; }
    .studio-zoom-group { display: none; }
    .studio-minimap { display: none; }
}