/* ==========================================================================
   RETRO DFD VISUALIZER - STYLE SYSTEM
   ========================================================================== */

/* Theme Definition and CSS Variables */
.crt-theme-green {
    --bg-color: #000b00;
    --card-bg: #001500;
    --text-color: #33ff33;
    --text-dim: #1ea31e;
    --text-bright: #88ff88;
    --border-color: #33ff33;
    --border-dim: #1a8a1a;
    --grid-line-color: rgba(51, 255, 51, 0.07);
    --selection-bg: #114411;
    --accent-color: #00ffff;
    --accent-glow: rgba(0, 255, 255, 0.4);
    --glow-color: rgba(51, 255, 51, 0.6);
    --danger-color: #ff3333;
    --input-bg: #000800;
}

.crt-theme-amber {
    --bg-color: #0f0600;
    --card-bg: #1a0b00;
    --text-color: #ffb000;
    --text-dim: #b37b00;
    --text-bright: #ffd480;
    --border-color: #ffb000;
    --border-dim: #996a00;
    --grid-line-color: rgba(255, 176, 0, 0.07);
    --selection-bg: #402000;
    --accent-color: #ff33ff;
    --accent-glow: rgba(255, 51, 255, 0.4);
    --glow-color: rgba(255, 176, 0, 0.6);
    --danger-color: #ff3333;
    --input-bg: #080300;
}

.crt-theme-blueprint {
    --bg-color: #001a33;
    --card-bg: #002b55;
    --text-color: #ffffff;
    --text-dim: #88ccff;
    --text-bright: #ffffff;
    --border-color: #00f0ff;
    --border-dim: #0077aa;
    --grid-line-color: rgba(0, 240, 255, 0.15);
    --selection-bg: #004488;
    --accent-color: #ffff00;
    --accent-glow: rgba(255, 255, 0, 0.4);
    --glow-color: rgba(0, 240, 255, 0.5);
    --danger-color: #ff5555;
    --input-bg: #001224;
}

.crt-theme-paper {
    --bg-color: #eae5d9;
    --card-bg: #f5f2eb;
    --text-color: #1a1a1a;
    --text-dim: #555555;
    --text-bright: #000000;
    --border-color: #2b2b2b;
    --border-dim: #666666;
    --grid-line-color: rgba(0, 0, 0, 0.05);
    --selection-bg: #d0c9b8;
    --accent-color: #aa2222;
    --accent-glow: rgba(170, 34, 34, 0.2);
    --glow-color: transparent;
    --danger-color: #990000;
    --input-bg: #ffffff;
}

.crt-theme-dark {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-color: #e0e0e0;
    --text-dim: #888888;
    --text-bright: #ffffff;
    --border-color: #444444;
    --border-dim: #333333;
    --grid-line-color: rgba(255, 255, 255, 0.03);
    --selection-bg: #333333;
    --accent-color: #0088ff;
    --accent-glow: rgba(0, 136, 255, 0.2);
    --glow-color: transparent;
    --danger-color: #ff3b30;
    --input-bg: #181818;
}

.crt-theme-cyberpunk {
    --bg-color: #18002a;
    --card-bg: #290045;
    --text-color: #00ffff;
    --text-dim: #008fa7;
    --text-bright: #ffffff;
    --border-color: #ff007f;
    --border-dim: #9d004e;
    --grid-line-color: rgba(0, 255, 255, 0.08);
    --selection-bg: rgba(255, 0, 127, 0.2);
    --accent-color: #ffff00;
    --accent-glow: rgba(255, 255, 0, 0.4);
    --glow-color: rgba(0, 255, 255, 0.5);
    --danger-color: #ff0055;
    --input-bg: #11001e;
}

.crt-theme-gameboy {
    --bg-color: #8bac0f;
    --card-bg: #9bbc0f;
    --text-color: #0f380f;
    --text-dim: #306230;
    --text-bright: #0f380f;
    --border-color: #0f380f;
    --border-dim: #306230;
    --grid-line-color: rgba(15, 56, 15, 0.08);
    --selection-bg: rgba(48, 98, 48, 0.3);
    --accent-color: #306230;
    --accent-glow: transparent;
    --glow-color: transparent;
    --danger-color: #0f380f;
    --input-bg: #8bac0f;
}

.crt-theme-matrix {
    --bg-color: #000000;
    --card-bg: #040804;
    --text-color: #00ff00;
    --text-dim: #008800;
    --text-bright: #88ff88;
    --border-color: #00ff00;
    --border-dim: #006600;
    --grid-line-color: rgba(0, 255, 0, 0.08);
    --selection-bg: #003300;
    --accent-color: #ffffff;
    --accent-glow: rgba(255, 255, 255, 0.5);
    --glow-color: rgba(0, 255, 0, 0.7);
    --danger-color: #ff3333;
    --input-bg: #000300;
}

/* Global Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #111;
    font-family: 'Share Tech Mono', 'VT323', monospace;
    font-size: 16px;
    letter-spacing: 0;
}

/* CRT Screen Effect Container */
.crt-monitor {
    position: relative;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #000;
}

/* Overlays for curved scanline aesthetic */
.crt-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

/* Scanline stripes */
.scanlines {
    background: linear-gradient(
        rgba(18, 16, 16, 0) 50%, 
        rgba(0, 0, 0, 0.25) 50%
    );
    background-size: 100% 4px;
}
.crt-theme-paper .scanlines {
    background: linear-gradient(
        rgba(255, 255, 255, 0) 50%, 
        rgba(0, 0, 0, 0.04) 50%
    );
    background-size: 100% 4px;
}

/* Subtle CRT flicker animation */
.flicker {
    animation: crt-flicker 0.15s infinite;
    opacity: 0.15;
    background-color: transparent;
}
.crt-theme-paper .flicker {
    display: none;
}

/* Vignette shadow gradient on corners */
.vignette {
    box-shadow: inset 0 0 80px rgba(0, 0, 0, 0.8);
}
.crt-theme-paper .vignette {
    box-shadow: inset 0 0 40px rgba(0, 0, 0, 0.15);
}

/* Main inner screen layout */
.crt-screen {
    width: 100%;
    height: 100%;
    padding: 12px;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    text-shadow: 0 0 2px var(--glow-color);
}

/* Header Section */
.system-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 6px 12px;
    border-bottom: 2px solid var(--border-color);
    font-weight: bold;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.header-title-container {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.header-logo {
    overflow-wrap: anywhere;
}

.system-status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--text-color);
    box-shadow: 0 0 8px var(--text-color);
}

.system-status-indicator.pulse {
    animation: status-pulse 2s infinite ease-in-out;
}

.system-status-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 20px;
    font-size: 0.9rem;
}

/* Toolbar Control Bar */
.control-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    gap: 10px;
    margin-bottom: 8px;
    background-color: var(--card-bg);
    position: relative;
    z-index: 100; /* Ensure the control bar and its dropdowns stay above the workspace stacking context */
    overflow: visible; /* Prevent clipping of the dropdown menu */
}

.control-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    min-width: 0;
}

.action-buttons {
    margin-left: auto;
    justify-content: flex-end;
}

/* Split Main Workspace */
.workspace-container {
    flex: 1;
    display: grid;
    grid-template-columns: minmax(280px, 330px) minmax(0, 1fr);
    gap: 10px;
    min-height: 0; /* Important for flex-child scroll */
    margin-bottom: 4px;
}

/* Sidebar and Main columns */
.left-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 0;
    min-width: 0;
}

.main-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 0;
    min-width: 0;
}

/* Panel Sections */
.panel-section {
    background-color: var(--card-bg);
    display: flex;
    flex-direction: column;
    min-height: 0;
    min-width: 0;
}

.left-panel .panel-section:first-child {
    flex: 1 1 58%;
}

#inspector-panel {
    flex: 0 1 230px;
}

.panel-section.canvas-section {
    flex: 1;
}

.panel-section.console-section {
    height: 150px;
}

.panel-header {
    background-color: var(--border-color);
    color: var(--bg-color);
    padding: 4px 10px;
    font-weight: bold;
    font-size: 0.9rem;
    letter-spacing: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    text-shadow: none;
    min-width: 0;
}

.panel-body {
    flex: 1;
    padding: 10px;
    overflow: auto;
    position: relative;
    min-width: 0;
}

/* Retro Inputs and Buttons */
.retro-input {
    background-color: var(--input-bg);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 3px 6px;
    outline: none;
    transition: all 0.2s;
    max-width: 100%;
}

.retro-input:focus {
    box-shadow: 0 0 6px var(--glow-color);
    border-color: var(--text-bright);
}

/* Custom Dropdown Styling */
.custom-dropdown {
    position: relative;
    display: inline-block;
    min-width: 180px;
}

.dropdown-trigger {
    width: 100%;
    text-align: left;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.dropdown-trigger::after {
    content: '▼';
    font-size: 0.7rem;
    margin-left: 10px;
}

.dropdown-options {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    min-width: 200px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    list-style: none;
    z-index: 500;
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden;
    max-width: calc(100vw - 40px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.8);
}

.dropdown-options.show { display: block; }
.dropdown-options li { padding: 6px 12px; cursor: pointer; white-space: nowrap; }
.dropdown-options li:hover { background-color: var(--text-color); color: var(--bg-color); }

/* Buttons */
.retro-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 3px 10px;
    min-height: 28px;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.1s ease;
    white-space: nowrap;
}

.retro-btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
    text-shadow: none;
}

.retro-btn.active {
    background-color: var(--selection-bg);
    border-color: var(--text-bright);
    box-shadow: inset 0 0 5px rgba(0, 0, 0, 0.5);
}

.retro-btn-sm {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--text-color);
    font-family: inherit;
    font-size: 0.75rem;
    padding: 1px 6px;
    min-height: 24px;
    cursor: pointer;
    transition: all 0.1s;
    white-space: nowrap;
}

.retro-btn-sm:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

.retro-btn-accent {
    background-color: transparent;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 4px 12px;
    min-height: 30px;
    cursor: pointer;
    transition: all 0.1s;
    white-space: nowrap;
}

.retro-btn-accent:hover {
    background-color: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 8px var(--accent-glow);
}

.retro-btn-danger {
    background-color: transparent;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
    font-family: inherit;
    font-size: 0.9rem;
    padding: 4px 12px;
    min-height: 30px;
    cursor: pointer;
    transition: all 0.1s;
    white-space: nowrap;
}

.retro-btn-danger:hover {
    background-color: var(--danger-color);
    color: var(--bg-color);
}

/* Border Decorations */
.retro-border-single {
    border: 2px solid var(--border-color);
}

.retro-border-double {
    border: 4px double var(--border-color);
}

/* DSL Script Editor Pane */
.editor-body {
    padding: 0;
    overflow: hidden;
}

#script-editor {
    width: 100%;
    height: 100%;
    background-color: var(--input-bg);
    color: var(--text-color);
    border: none;
    resize: none;
    font-family: inherit;
    font-size: 0.95rem;
    padding: 10px;
    line-height: 1.4;
    outline: none;
    tab-size: 4;
}

.editor-help-text {
    font-size: 0.75rem;
    color: var(--text-dim);
    padding: 4px 8px;
    border-top: 1px solid var(--border-dim);
    background-color: var(--input-bg);
    line-height: 1.35;
}

/* Property Inspector Panel */
.inspector-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 0;
}

.inspector-placeholder {
    color: var(--text-dim);
    font-size: 0.85rem;
    text-align: center;
    line-height: 1.4;
    border: 1px dashed var(--border-dim);
    padding: 20px;
}

.inspector-fields {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.field-group {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.field-group label {
    width: 80px;
    font-size: 0.85rem;
    font-weight: bold;
    color: var(--text-dim);
}

.field-group .retro-input {
    flex: 1;
    min-width: 0;
}

.read-only-field {
    font-size: 0.9rem;
    color: var(--text-bright);
    background-color: var(--input-bg);
    border: 1px solid var(--border-dim);
    padding: 3px 6px;
    flex: 1;
    display: inline-block;
    min-width: 0;
    overflow-wrap: anywhere;
}

.field-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.field-buttons button {
    flex: 1;
}

/* SVG DFD Canvas Area */
.canvas-body {
    padding: 0;
    overflow: hidden;
    cursor: default;
    background-color: var(--bg-color);
    min-height: 320px;
}

#dfd-canvas {
    width: 100%;
    height: 100%;
    display: block;
    user-select: none;
    touch-action: none;
}

/* SVG Elements Styling */
.grid-line {
    stroke: var(--grid-line-color);
    stroke-width: 1px;
}

.grid-line-sub {
    stroke: var(--grid-line-color);
    stroke-width: 0.5px;
    opacity: 0.35;
}

/* Nodes styling */
.dfd-node {
    cursor: move;
}

.dfd-node .node-shape {
    fill: var(--bg-color);
    stroke: var(--text-color);
    stroke-width: 2px;
    filter: url(#retro-glow);
    transition: stroke 0.2s, stroke-width 0.2s;
}

.dfd-node .store-outline {
    fill: none;
}

.dfd-node:hover .node-shape {
    stroke: var(--text-bright);
    stroke-width: 3px;
}

.dfd-node.selected .node-shape {
    stroke: var(--accent-color);
    stroke-width: 3px;
    stroke-dasharray: 4 2;
    animation: dash-rotate 4s infinite linear;
}

/* SVG Text elements */
.dfd-node text {
    fill: var(--text-color);
    font-family: inherit;
    font-size: 13px;
    text-anchor: middle;
    dominant-baseline: middle;
    pointer-events: none;
}

.dfd-node.selected text {
    fill: var(--accent-color);
}

/* Flows / Arrows */
.dfd-flow {
    cursor: pointer;
}

.dfd-flow .flow-path {
    fill: none;
    stroke: var(--text-color);
    stroke-width: 2px;
    marker-end: url(#arrowhead);
    filter: url(#retro-glow);
    transition: stroke 0.2s, stroke-width 0.2s;
}

.dfd-flow:hover .flow-path {
    stroke: var(--text-bright);
    stroke-width: 3px;
}

.dfd-flow.selected .flow-path {
    stroke: var(--accent-color);
    stroke-width: 3px;
    stroke-dasharray: 6 3;
    marker-end: url(#arrowhead-selected);
    animation: dash-rotate 2s infinite linear;
}

.dfd-flow text {
    fill: var(--text-color);
    font-family: inherit;
    font-size: 12px;
    text-anchor: middle;
    paint-order: stroke fill;
    stroke: var(--bg-color);
    stroke-width: 4px;
    stroke-linejoin: round;
}

.dfd-flow.selected text {
    fill: var(--accent-color);
}

/* Arrow markers in themes */
.marker-arrow polygon {
    fill: var(--text-color);
}
.marker-arrow-selected polygon {
    fill: var(--accent-color);
}
.marker-arrow-linking polygon {
    fill: var(--text-bright);
}

/* Data packet pulse animations on lines */
.data-packet {
    fill: var(--text-bright);
    filter: url(#retro-glow);
}
.crt-theme-blueprint .data-packet {
    fill: var(--accent-color);
}
.crt-theme-paper .data-packet {
    fill: var(--accent-color);
}

/* Temporary connection line (linking mode) */
.linking-line {
    fill: none;
    stroke: var(--text-bright);
    stroke-width: 2px;
    stroke-dasharray: 4 4;
    marker-end: url(#arrowhead-linking);
}

/* Port anchors visible during linking mode */
.port-anchor {
    fill: var(--bg-color);
    stroke: var(--text-bright);
    stroke-width: 2px;
    cursor: crosshair;
}

.port-anchor:hover {
    fill: var(--text-bright);
}

/* Canvas Toolbar */
.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.canvas-tools {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    justify-content: flex-end;
}

.canvas-tool-btn {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    font-family: inherit;
    font-size: 0.75rem;
    padding: 1px 8px;
    min-height: 24px;
    cursor: pointer;
    transition: all 0.1s;
    white-space: nowrap;
}

.canvas-tool-btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

.canvas-tool-btn.active {
    background-color: var(--text-color);
    color: var(--bg-color);
    font-weight: bold;
    box-shadow: 0 0 5px var(--glow-color);
}

/* Presets Panel overlay on canvas */
.presets-container {
    position: absolute;
    bottom: 10px;
    left: 10px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    background-color: rgba(0, 0, 0, 0.6);
    padding: 4px 8px;
    border: 1px solid var(--border-dim);
    max-width: calc(100% - 150px);
}

.crt-theme-paper .presets-container {
    background-color: rgba(255, 255, 255, 0.85);
}

.preset-btn {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-dim);
    font-family: inherit;
    font-size: 0.7rem;
    padding: 1px 6px;
    min-height: 22px;
    cursor: pointer;
    transition: all 0.1s;
    white-space: nowrap;
}

.preset-btn:hover {
    border-color: var(--text-color);
    background-color: var(--selection-bg);
}

/* Zoom Controls */
.canvas-zoom-pan {
    position: absolute;
    bottom: 10px;
    right: 10px;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 4px;
    max-width: 120px;
}

.zoom-btn {
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-dim);
    font-family: inherit;
    font-size: 0.75rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

#btn-zoom-reset {
    width: auto;
    padding: 0 6px;
}

.zoom-btn:hover {
    border-color: var(--text-color);
    background-color: var(--selection-bg);
}

/* Diagnostics Console */
.console-body {
    background-color: var(--input-bg);
    padding: 8px 12px;
    font-family: inherit;
    font-size: 0.85rem;
    line-height: 1.4;
    display: flex;
    flex-direction: column-reverse; /* Scroll from bottom style */
    overflow-y: auto;
}

.console-line {
    white-space: pre-wrap;
    margin-bottom: 2px;
}

/* Modals Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.75);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modal-content {
    background-color: var(--card-bg);
    width: 500px;
    max-width: calc(100vw - 32px);
    max-height: calc(100dvh - 32px);
    display: flex;
    flex-direction: column;
}

.modal-buttons {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 10px;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--input-bg);
    border-left: 1px solid var(--border-dim);
}

::-webkit-scrollbar-thumb {
    background: var(--border-dim);
    border: 1px solid var(--bg-color);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}

/* Animations */
@keyframes status-pulse {
    0%, 100% {
        opacity: 0.4;
        box-shadow: 0 0 4px var(--text-color);
    }
    50% {
        opacity: 1;
        box-shadow: 0 0 10px var(--text-color);
    }
}

@keyframes crt-flicker {
    0% { opacity: 0.15; }
    50% { opacity: 0.145; }
    100% { opacity: 0.155; }
}

@keyframes dash-rotate {
    to {
        stroke-dashoffset: -40;
    }
}

/* Grid Line Styling in themes */
.crt-theme-paper .grid-line, .crt-theme-paper .grid-line-sub {
    stroke: rgba(0, 0, 0, 0.08);
}
.crt-theme-blueprint .grid-line, .crt-theme-blueprint .grid-line-sub {
    stroke: rgba(0, 240, 255, 0.18);
}

/* Print/Export Styling adjustments */
.no-glow {
    filter: none !important;
    text-shadow: none !important;
}

.crt-theme-dark .grid-line, .crt-theme-dark .grid-line-sub {
    stroke: rgba(255, 255, 255, 0.04) !important;
}
.crt-theme-cyberpunk .grid-line, .crt-theme-cyberpunk .grid-line-sub {
    stroke: rgba(0, 255, 255, 0.09) !important;
}
.crt-theme-gameboy .grid-line, .crt-theme-gameboy .grid-line-sub {
    stroke: rgba(15, 56, 15, 0.12) !important;
}
.crt-theme-matrix .grid-line, .crt-theme-matrix .grid-line-sub {
    stroke: rgba(0, 255, 0, 0.1) !important;
}

/* Responsive Layout */
@media (max-width: 1100px) {
    .system-header {
        align-items: flex-start;
    }

    .control-bar {
        justify-content: flex-start;
    }

    .action-buttons {
        flex: 1 1 100%;
        justify-content: flex-start;
        margin-left: 0;
    }

    .workspace-container {
        grid-template-columns: minmax(250px, 300px) minmax(0, 1fr);
    }
}

@media (max-width: 900px) {
    body, html {
        height: auto;
        min-height: 100%;
        overflow-x: hidden;
        overflow-y: auto;
    }

    .crt-monitor {
        width: 100%;
        height: auto;
        min-height: 100vh;
        min-height: 100dvh;
        overflow: visible;
        align-items: stretch;
    }

    .crt-screen {
        height: auto;
        min-height: 100vh;
        min-height: 100dvh;
        overflow: visible;
        padding: 10px;
    }

    .system-header {
        flex-direction: column;
        align-items: stretch;
    }

    .system-status-bar {
        justify-content: flex-start;
        gap: 6px 16px;
    }

    .control-bar {
        align-items: stretch;
    }

    .control-group {
        width: 100%;
    }

    .control-group:first-child {
        flex-wrap: nowrap;
    }

    .control-group:first-child .retro-input {
        flex: 1;
        min-width: 0;
    }

    .workspace-container {
        flex: none;
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        min-height: auto;
    }

    .left-panel,
    .main-panel {
        min-height: auto;
    }

    .left-panel .panel-section:first-child {
        flex: none;
        height: clamp(280px, 42dvh, 380px);
    }

    #inspector-panel {
        flex: none;
        min-height: 180px;
    }

    .panel-section.canvas-section {
        flex: none;
    }

    .canvas-body {
        height: clamp(360px, 64dvh, 620px);
        min-height: 360px;
    }
    
    .panel-section.console-section {
        height: 130px;
    }

    .canvas-header {
        align-items: flex-start;
    }

    .canvas-tools {
        width: 100%;
        justify-content: flex-start;
    }
}

@media (max-width: 640px) {
    .crt-screen {
        padding: 8px;
    }

    .system-header {
        padding: 6px 8px;
        font-size: 1rem;
    }

    .system-status-bar {
        font-size: 0.78rem;
        gap: 4px 10px;
    }

    .control-bar {
        padding: 8px;
        gap: 8px;
    }

    .control-group {
        align-items: stretch;
    }

    .control-group:nth-child(2) .retro-btn,
    .action-buttons .retro-btn {
        flex: 1 1 calc(50% - 8px);
        min-width: 0;
    }

    .retro-btn,
    .retro-btn-accent,
    .retro-btn-danger {
        min-height: 34px;
        padding: 5px 8px;
    }

    .panel-header {
        padding: 5px 8px;
        align-items: flex-start;
        flex-wrap: wrap;
    }

    .canvas-tool-btn {
        flex: 1 1 calc(50% - 4px);
        min-height: 30px;
        padding: 4px 6px;
    }

    .left-panel .panel-section:first-child {
        height: clamp(300px, 48dvh, 430px);
    }

    .canvas-body {
        display: flex;
        flex-direction: column;
        height: clamp(360px, 62dvh, 560px);
    }

    #dfd-canvas {
        flex: 1 1 auto;
        min-height: 0;
        height: auto;
    }

    .field-group {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
    }

    .field-group label {
        width: auto;
    }

    .field-buttons,
    .modal-buttons {
        flex-direction: column;
    }

    .presets-container {
        position: static;
        margin: 8px 8px 0;
        max-width: none;
        background-color: var(--card-bg);
    }

    .canvas-zoom-pan {
        position: static;
        margin: 6px 8px 8px;
        max-width: none;
    }
}

@media (max-width: 420px) {
    .control-group:nth-child(2) .retro-btn,
    .action-buttons .retro-btn,
    .canvas-tool-btn,
    .preset-btn {
        flex-basis: 100%;
    }

    .presets-container {
        align-items: stretch;
    }

    .zoom-btn {
        flex: 1 1 0;
        min-width: 42px;
    }
}

/* Print Styles for Vector PDF Export */
@media print {
    body, html {
        background-color: #ffffff !important;
        color: #000000 !important;
        width: 100% !important;
        height: 100% !important;
        overflow: visible !important;
    }
    .crt-monitor, .crt-screen {
        padding: 0 !important;
        background-color: #ffffff !important;
        color: #000000 !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    .crt-overlay, .system-header, .control-bar, .left-panel, .console-section, .canvas-zoom-pan, .presets-container, .panel-header {
        display: none !important;
    }
    .workspace-container {
        display: block !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    .main-panel {
        display: block !important;
        width: 100% !important;
        height: 100% !important;
    }
    .panel-section.canvas-section {
        border: none !important;
        background: #ffffff !important;
        width: 100% !important;
        height: 100vh !important;
    }
    #dfd-canvas {
        background-color: #ffffff !important;
    }
    .grid-line, .grid-line-sub {
        stroke: rgba(0, 0, 0, 0.08) !important;
    }
    .node-shape {
        fill: #ffffff !important;
        stroke: #000000 !important;
        stroke-width: 2px !important;
        filter: none !important;
    }
    .dfd-node text {
        fill: #000000 !important;
    }
    .flow-path {
        stroke: #000000 !important;
        stroke-width: 2px !important;
        filter: none !important;
    }
    .dfd-flow text {
        fill: #000000 !important;
        stroke: #ffffff !important;
        stroke-width: 4px !important;
    }
    .marker-arrow polygon {
        fill: #000000 !important;
    }
    .data-packet {
        display: none !important;
    }
}