/* ========================================
   FART IDE - Skeuomorphic Design System
   Professional, tactile, real-world UI
   ======================================== */

/* ----------------------------------------
   CSS Variables & Design Tokens
   ---------------------------------------- */
:root {
    /* Primary Colors */
    --color-primary: #3b82f6;
    --color-primary-dark: #2563eb;
    --color-primary-light: #60a5fa;
    
    /* Semantic Colors */
    --color-success: #22c55e;
    --color-success-dark: #16a34a;
    --color-danger: #ef4444;
    --color-danger-dark: #dc2626;
    --color-warning: #f59e0b;
    --color-info: #06b6d4;
    
    /* Surface Colors - Warm grays for skeuomorphism */
    --surface-100: #f8f6f4;
    --surface-200: #e8e4e0;
    --surface-300: #d4cfc8;
    --surface-400: #b8b0a6;
    --surface-500: #8c8578;
    --surface-600: #5c574e;
    --surface-700: #3d3a35;
    --surface-800: #2a2824;
    --surface-900: #1c1b18;
    
    /* Text Colors */
    --text-primary: #1a1918;
    --text-secondary: #4a4744;
    --text-muted: #7a756e;
    --text-inverse: #fafaf9;
    
    /* Material Colors */
    --metal-light: linear-gradient(180deg, #e8e6e4 0%, #c8c4c0 50%, #b8b4b0 100%);
    --metal-dark: linear-gradient(180deg, #4a4744 0%, #3a3734 50%, #2a2724 100%);
    --metal-shine: linear-gradient(180deg, rgba(255,255,255,0.3) 0%, rgba(255,255,255,0.05) 50%, rgba(0,0,0,0.1) 100%);
    
    /* Shadows */
    --shadow-inset-sm: inset 0 1px 2px rgba(0,0,0,0.2), inset 0 -1px 1px rgba(255,255,255,0.1);
    --shadow-inset-md: inset 0 2px 4px rgba(0,0,0,0.25), inset 0 -1px 2px rgba(255,255,255,0.1);
    --shadow-raised-sm: 0 1px 2px rgba(0,0,0,0.2), 0 1px 1px rgba(0,0,0,0.1);
    --shadow-raised-md: 0 2px 4px rgba(0,0,0,0.2), 0 4px 8px rgba(0,0,0,0.1);
    --shadow-raised-lg: 0 4px 8px rgba(0,0,0,0.2), 0 8px 16px rgba(0,0,0,0.15);
    --shadow-glow: 0 0 12px rgba(59, 130, 246, 0.4);
    
    /* Borders */
    --border-raised: 1px solid rgba(255,255,255,0.2);
    --border-inset: 1px solid rgba(0,0,0,0.3);
    --border-subtle: 1px solid rgba(0,0,0,0.1);
    
    /* Layout */
    --toolbar-height: 64px;
    --stage-panel-width: 340px;
    --side-panel-width: 340px;
    --status-bar-height: 32px;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Monaco', 'Consolas', monospace;
    --font-emoji: 'Noto Color Emoji', 'Apple Color Emoji', 'Segoe UI Emoji', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.1s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* ----------------------------------------
   Reset & Base Styles
   ---------------------------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--surface-800);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    line-height: 1.5;
}

/* Emoji elements */
.btn-icon, .panel-icon, .tab-icon, .logo-emblem {
    font-family: var(--font-emoji);
}

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: 
        linear-gradient(180deg, rgba(0,0,0,0.1) 0%, transparent 2px),
        linear-gradient(180deg, var(--surface-700) 0%, var(--surface-800) 100%);
}

/* ----------------------------------------
   Toolbar - Brushed Metal Style
   ---------------------------------------- */
#toolbar {
    height: var(--toolbar-height);
    background: var(--metal-dark);
    position: relative;
    flex-shrink: 0;
    z-index: 100;
}

.toolbar-inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    background: var(--metal-shine);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.toolbar-shadow {
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, transparent 100%);
    pointer-events: none;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-emblem {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    background: linear-gradient(145deg, #4a4744 0%, #2a2724 100%);
    border-radius: 10px;
    box-shadow: 
        var(--shadow-raised-sm),
        inset 0 1px 1px rgba(255,255,255,0.1);
    border: 1px solid rgba(0,0,0,0.3);
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-inverse);
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
    letter-spacing: -0.02em;
}

.logo-subtitle {
    font-size: 0.7rem;
    color: var(--surface-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: -2px;
}

/* Button Groups */
.toolbar-center {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-left, .toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.button-group {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: rgba(0,0,0,0.2);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(0,0,0,0.3);
    box-shadow: var(--shadow-inset-sm);
}

.toolbar-divider {
    width: 1px;
    height: 32px;
    background: linear-gradient(180deg, transparent 0%, rgba(255,255,255,0.1) 50%, transparent 100%);
    margin: 0 8px;
}

/* Toolbar Buttons - 3D Raised Effect */
.toolbar-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-inverse);
    background: linear-gradient(180deg, #5a5754 0%, #4a4744 40%, #3a3734 100%);
    border: 1px solid rgba(0,0,0,0.4);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    text-shadow: 0 1px 1px rgba(0,0,0,0.5);
    box-shadow: 
        0 1px 0 rgba(255,255,255,0.1) inset,
        0 -1px 0 rgba(0,0,0,0.2) inset,
        var(--shadow-raised-sm);
    position: relative;
    overflow: hidden;
}

.toolbar-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255,255,255,0.1) 0%, transparent 100%);
    pointer-events: none;
}

.toolbar-btn:hover:not(:disabled) {
    background: linear-gradient(180deg, #6a6764 0%, #5a5754 40%, #4a4744 100%);
}

.toolbar-btn:active:not(:disabled) {
    background: linear-gradient(180deg, #3a3734 0%, #4a4744 40%, #5a5754 100%);
    box-shadow: var(--shadow-inset-sm);
}

.toolbar-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.toolbar-btn.icon-only {
    padding: 8px 10px;
}

.toolbar-btn .btn-icon {
    font-size: 1rem;
    filter: drop-shadow(0 1px 1px rgba(0,0,0,0.3));
}

.toolbar-btn .btn-label {
    font-size: 0.8rem;
}

/* Execution Control Buttons */
.btn-run {
    background: linear-gradient(180deg, #34d058 0%, #28a745 40%, #1e7e34 100%) !important;
    border-color: rgba(0,0,0,0.4) !important;
}

.btn-run:hover:not(:disabled) {
    background: linear-gradient(180deg, #44e068 0%, #34d058 40%, #28a745 100%) !important;
}

.btn-run:active:not(:disabled) {
    background: linear-gradient(180deg, #1e7e34 0%, #28a745 40%, #34d058 100%) !important;
}

.btn-stop {
    background: linear-gradient(180deg, #f85858 0%, #dc3545 40%, #c82333 100%) !important;
    border-color: rgba(0,0,0,0.4) !important;
}

.btn-stop:hover:not(:disabled) {
    background: linear-gradient(180deg, #ff6868 0%, #f85858 40%, #dc3545 100%) !important;
}

.btn-step {
    background: linear-gradient(180deg, #ffc658 0%, #ffc107 40%, #e0a800 100%) !important;
    border-color: rgba(0,0,0,0.4) !important;
    color: var(--text-primary) !important;
    text-shadow: none !important;
}

/* ----------------------------------------
   Main Content Area
   ---------------------------------------- */
#main-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    background: var(--surface-800);
}

/* ----------------------------------------
   Panel Frames - Recessed Container Style
   ---------------------------------------- */
.panel-frame {
    height: 100%;
    display: flex;
    flex-direction: column;
    background: linear-gradient(180deg, var(--surface-700) 0%, var(--surface-800) 100%);
    border: 1px solid rgba(0,0,0,0.4);
    box-shadow: var(--shadow-inset-md);
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border-bottom: 1px solid rgba(0,0,0,0.3);
    box-shadow: 0 1px 0 rgba(255,255,255,0.05) inset;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-inverse);
    text-shadow: 0 1px 1px rgba(0,0,0,0.5);
}

.panel-icon {
    font-size: 1.1rem;
}

.panel-badge {
    padding: 3px 8px;
    font-size: 0.7rem;
    font-weight: 500;
    font-family: var(--font-mono);
    color: var(--surface-300);
    background: rgba(0,0,0,0.3);
    border-radius: 4px;
    border: 1px solid rgba(0,0,0,0.2);
}

/* ----------------------------------------
   Stage Panel - Monitor/Screen Style
   ---------------------------------------- */
#stage-panel {
    width: var(--stage-panel-width);
    padding: 12px;
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--surface-700) 0%, var(--surface-800) 100%);
    border-right: 1px solid rgba(0,0,0,0.5);
}

#stage-panel .panel-frame {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.stage-wrapper {
    position: relative;
    margin: 12px;
}

#stage-container {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    background: #ffffff;
    box-shadow: 
        0 0 0 3px var(--surface-900),
        0 0 0 4px var(--surface-600),
        var(--shadow-inset-md),
        0 8px 24px rgba(0,0,0,0.4);
}

#stage-canvas {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    background: #ffffff;
}

.stage-bezel {
    position: absolute;
    inset: -4px;
    border-radius: calc(var(--border-radius-md) + 4px);
    border: 4px solid transparent;
    background: linear-gradient(180deg, var(--surface-500) 0%, var(--surface-700) 100%) border-box;
    -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
}

/* Stage Controls */
.stage-controls {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: var(--surface-800);
    border-top: 1px solid rgba(0,0,0,0.3);
}

.stage-control-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--text-inverse);
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-raised-sm);
}

.stage-control-btn:hover {
    background: linear-gradient(180deg, var(--surface-500) 0%, var(--surface-600) 100%);
}

.stage-control-btn:active {
    box-shadow: var(--shadow-inset-sm);
}

.stage-coords-display {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--surface-300);
    background: rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    border: 1px solid rgba(0,0,0,0.2);
}

.coord-label {
    color: var(--surface-400);
}

/* ----------------------------------------
   Canvas Area - Blueprint/Paper Style
   ---------------------------------------- */
#canvas-area {
    flex: 1;
    padding: 12px 0;
    display: flex;
    flex-direction: column;
}

.canvas-frame {
    flex: 1;
    position: relative;
    margin: 0 12px;
    background: #1a1f2e;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 
        var(--shadow-inset-md),
        0 0 0 1px rgba(0,0,0,0.5);
}

#fart-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

#canvas-watermark {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 14px;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.3);
    background: rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--border-radius-sm);
    pointer-events: none;
    backdrop-filter: blur(4px);
}

/* Zoom Controls - Pill Shape */
#zoom-controls {
    position: absolute;
    bottom: 16px;
    left: 16px;
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 4px;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border: 1px solid rgba(0,0,0,0.4);
    border-radius: 20px;
    box-shadow: var(--shadow-raised-md);
}

.zoom-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-inverse);
    background: linear-gradient(180deg, var(--surface-500) 0%, var(--surface-600) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
}

.zoom-btn:hover {
    background: linear-gradient(180deg, var(--surface-400) 0%, var(--surface-500) 100%);
}

.zoom-btn:active {
    box-shadow: var(--shadow-inset-sm);
}

.zoom-display {
    min-width: 50px;
    padding: 0 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-inverse);
    text-align: center;
}

.zoom-divider {
    width: 1px;
    height: 20px;
    background: rgba(255,255,255,0.1);
    margin: 0 4px;
}

/* Execution Indicator */
#execution-indicator {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: linear-gradient(180deg, rgba(34,197,94,0.9) 0%, rgba(22,163,74,0.9) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: 20px;
    box-shadow: var(--shadow-raised-md), var(--shadow-glow);
}

#execution-indicator.hidden {
    display: none;
}

.indicator-light {
    width: 10px;
    height: 10px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(255,255,255,0.8);
    animation: pulse-light 1s ease-in-out infinite;
}

@keyframes pulse-light {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.6; transform: scale(0.8); }
}

.indicator-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* ----------------------------------------
   Side Panel - Notebook Style
   ---------------------------------------- */
#side-panel {
    width: var(--side-panel-width);
    padding: 12px;
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--surface-700) 0%, var(--surface-800) 100%);
    border-left: 1px solid rgba(0,0,0,0.5);
}

#side-panel .panel-frame {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

/* Tab Bar */
.tab-bar {
    display: flex;
    background: var(--surface-800);
    border-bottom: 1px solid rgba(0,0,0,0.4);
    padding: 4px 4px 0;
}

.tab-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 10px 8px;
    font-family: inherit;
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--surface-400);
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm) var(--border-radius-sm) 0 0;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
}

.tab-btn:hover {
    color: var(--surface-300);
    background: rgba(255,255,255,0.03);
}

.tab-btn.active {
    color: var(--text-inverse);
    background: var(--surface-700);
    box-shadow: 
        0 -1px 0 rgba(255,255,255,0.05) inset,
        -1px 0 0 rgba(0,0,0,0.2),
        1px 0 0 rgba(0,0,0,0.2);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
}

.tab-icon {
    font-size: 1.1rem;
}

.tab-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tab Content */
.tab-content {
    flex: 1;
    display: none;
    flex-direction: column;
    background: var(--surface-700);
    overflow: hidden;
}

.tab-content.active {
    display: flex;
}

.tab-toolbar {
    padding: 12px;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border-bottom: 1px solid rgba(0,0,0,0.2);
}

/* Primary Button */
.primary-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-primary) 40%, var(--color-primary-dark) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    text-shadow: 0 1px 1px rgba(0,0,0,0.3);
    box-shadow: 
        0 1px 0 rgba(255,255,255,0.2) inset,
        var(--shadow-raised-sm);
}

.primary-btn:hover {
    background: linear-gradient(180deg, #70b5ff 0%, var(--color-primary-light) 40%, var(--color-primary) 100%);
}

.primary-btn:active {
    box-shadow: var(--shadow-inset-sm);
}

.primary-btn .btn-icon {
    font-size: 1.1rem;
    font-weight: 700;
}

/* Scrollable List */
.scrollable-list {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
}

.empty-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--surface-400);
    margin-bottom: 4px;
}

.empty-hint {
    font-size: 0.8rem;
    color: var(--surface-500);
}

/* ----------------------------------------
   Console - Terminal Style
   ---------------------------------------- */
#console-output {
    flex: 1;
    overflow-y: auto;
    padding: 12px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.6;
    background: var(--surface-900);
    color: var(--surface-300);
}

.console-welcome {
    text-align: center;
    padding: 20px;
    color: var(--surface-500);
}

.welcome-icon {
    font-size: 2rem;
    margin-bottom: 8px;
}

.welcome-text {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.welcome-hint {
    font-size: 0.75rem;
}

.console-line {
    padding: 4px 8px;
    margin-bottom: 4px;
    border-radius: var(--border-radius-sm);
    border-left: 3px solid transparent;
    word-break: break-word;
}

.console-line.log {
    color: var(--surface-200);
    border-left-color: var(--surface-500);
    background: rgba(255,255,255,0.02);
}

.console-line.info {
    color: var(--color-info);
    border-left-color: var(--color-info);
    background: rgba(6,182,212,0.1);
}

.console-line.success {
    color: var(--color-success);
    border-left-color: var(--color-success);
    background: rgba(34,197,94,0.1);
}

.console-line.warn {
    color: var(--color-warning);
    border-left-color: var(--color-warning);
    background: rgba(245,158,11,0.1);
}

.console-line.error {
    color: var(--color-danger);
    border-left-color: var(--color-danger);
    background: rgba(239,68,68,0.1);
}

.console-line.input {
    color: var(--color-primary-light);
    border-left-color: var(--color-primary);
    font-style: italic;
}

.console-line.output {
    color: #a5d6ff;
    border-left-color: #a5d6ff;
}

.console-line .timestamp {
    color: var(--surface-500);
    margin-right: 10px;
    font-size: 0.7rem;
}

/* Console Input */
.console-input-wrapper {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    background: var(--surface-800);
    border-top: 1px solid rgba(0,0,0,0.3);
    border-bottom: 1px solid rgba(0,0,0,0.3);
}

.console-prompt {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-right: 8px;
}

#console-input {
    flex: 1;
    padding: 8px 12px;
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-inverse);
    background: var(--surface-900);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    outline: none;
    box-shadow: var(--shadow-inset-sm);
}

#console-input:focus {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-inset-sm), 0 0 0 2px rgba(59,130,246,0.2);
}

#console-input::placeholder {
    color: var(--surface-500);
}

.console-send-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-left: 8px;
    font-size: 1rem;
    color: #fff;
    background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-raised-sm);
}

.console-send-btn:hover {
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.console-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--surface-700);
}

.console-tool-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-family: inherit;
    font-size: 0.75rem;
    color: var(--surface-300);
    background: var(--surface-600);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.console-tool-btn:hover {
    background: var(--surface-500);
    color: var(--text-inverse);
}

/* Console Checkbox */
.console-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.75rem;
    color: var(--surface-400);
    cursor: pointer;
}

.console-checkbox input {
    display: none;
}

.console-checkbox .checkmark {
    width: 16px;
    height: 16px;
    background: var(--surface-800);
    border: 1px solid rgba(0,0,0,0.4);
    border-radius: 3px;
    box-shadow: var(--shadow-inset-sm);
    position: relative;
}

.console-checkbox input:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary-dark);
}

.console-checkbox input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.7rem;
    color: #fff;
}

/* ----------------------------------------
   Sprite Items
   ---------------------------------------- */
.sprite-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: var(--shadow-raised-sm);
}

.sprite-item:hover {
    background: linear-gradient(180deg, var(--surface-500) 0%, var(--surface-600) 100%);
}

.sprite-item.selected {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-raised-sm), 0 0 0 2px rgba(59,130,246,0.3);
}

.sprite-thumbnail {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border-radius: var(--border-radius-sm);
    border: 2px solid var(--surface-400);
    box-shadow: var(--shadow-inset-sm);
    overflow: hidden;
}

.sprite-thumbnail img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.sprite-thumbnail .placeholder {
    font-size: 1.8rem;
}

.sprite-info {
    flex: 1;
    min-width: 0;
}

.sprite-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-inverse);
    margin-bottom: 2px;
}

.sprite-coords {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--surface-400);
}

.sprite-actions {
    display: flex;
    gap: 4px;
}

.sprite-action-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--surface-300);
    background: var(--surface-700);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.sprite-action-btn:hover {
    background: var(--surface-600);
    color: var(--text-inverse);
}

.sprite-action-btn.delete:hover {
    background: var(--color-danger);
    border-color: var(--color-danger-dark);
    color: #fff;
}

/* ----------------------------------------
   Variable Items
   ---------------------------------------- */
.variable-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    margin-bottom: 8px;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-raised-sm);
}

.variable-item .var-icon {
    font-size: 1.1rem;
}

.variable-item input {
    flex: 1;
    min-width: 0;
    padding: 6px 10px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-inverse);
    background: var(--surface-800);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-inset-sm);
}

.variable-item input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.variable-item .var-name {
    flex: 0 0 60px;
}

.variable-item .var-type {
    padding: 2px 6px;
    font-size: 0.6rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--surface-400);
    background: rgba(0,0,0,0.3);
    border-radius: 3px;
}

.variable-item .var-delete {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--surface-400);
    background: transparent;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.variable-item .var-delete:hover {
    color: var(--color-danger);
    background: rgba(239,68,68,0.1);
}

/* ----------------------------------------
   Properties Panel
   ---------------------------------------- */
.properties-panel {
    padding: 12px;
    background: var(--surface-800);
    border-top: 1px solid rgba(0,0,0,0.3);
}

.properties-panel.hidden {
    display: none;
}

.property-section {
    margin-bottom: 16px;
}

.property-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--surface-400);
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.property-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.property-row label {
    flex: 0 0 60px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--surface-300);
}

.property-row input,
.property-row select {
    flex: 1;
    padding: 6px 10px;
    font-size: 0.8rem;
    color: var(--text-inverse);
    background: var(--surface-800);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-sm);
    box-shadow: var(--shadow-inset-sm);
}

.property-row input:focus,
.property-row select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.node-info-card {
    padding: 12px;
    margin-bottom: 12px;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-raised-sm);
}

.node-info-card .node-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-inverse);
    margin-bottom: 4px;
}

.node-info-card .node-type {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--surface-400);
}

/* ----------------------------------------
   Status Bar - LCD Display Style
   ---------------------------------------- */
#status-bar {
    height: var(--status-bar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    background: linear-gradient(180deg, var(--surface-900) 0%, #0f0f14 100%);
    border-top: 1px solid rgba(0,0,0,0.5);
    box-shadow: 0 -1px 0 rgba(255,255,255,0.05) inset;
}

.status-left, .status-center, .status-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.status-indicator {
    display: flex;
    align-items: center;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--color-success);
}

#status-message {
    font-size: 0.75rem;
    color: var(--surface-400);
}

/* Execution Badge */
.execution-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 12px;
    border: 1px solid;
}

.execution-badge.stopped {
    color: var(--color-danger);
    background: rgba(239,68,68,0.1);
    border-color: rgba(239,68,68,0.3);
}

.execution-badge.stopped .badge-dot {
    background: var(--color-danger);
}

.execution-badge.running {
    color: var(--color-success);
    background: rgba(34,197,94,0.1);
    border-color: rgba(34,197,94,0.3);
}

.execution-badge.running .badge-dot {
    background: var(--color-success);
    animation: pulse-dot 1s ease-in-out infinite;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

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

.status-item {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.7rem;
}

.status-label {
    color: var(--surface-500);
}

.status-value {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--surface-300);
}

.status-divider {
    width: 1px;
    height: 14px;
    background: var(--surface-700);
}

#execution-time-item {
    min-width: 70px;
}

/* ----------------------------------------
   Modal - Dialog Box Style
   ---------------------------------------- */
#modal-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(4px);
    z-index: 1000;
}

#modal-overlay.hidden {
    display: none;
}

#modal-container {
    width: 90%;
    max-width: 480px;
    max-height: 80vh;
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%);
    border: 1px solid rgba(0,0,0,0.5);
    border-radius: var(--border-radius-lg);
    box-shadow: 
        0 0 0 1px rgba(255,255,255,0.05) inset,
        var(--shadow-raised-lg);
    overflow: hidden;
    animation: modal-in 0.2s ease-out;
}

@keyframes modal-in {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    background: linear-gradient(180deg, var(--surface-500) 0%, var(--surface-600) 100%);
    border-bottom: 1px solid rgba(0,0,0,0.3);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-inverse);
}

.modal-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--surface-400);
    background: rgba(0,0,0,0.2);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-inverse);
    background: rgba(0,0,0,0.4);
}

.modal-body {
    padding: 20px;
    max-height: 50vh;
    overflow-y: auto;
    color: var(--surface-200);
}

.modal-body h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-primary-light);
    margin: 16px 0 8px;
}

.modal-body h4:first-child {
    margin-top: 0;
}

.modal-body p {
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 12px;
}

.modal-body code {
    padding: 2px 6px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-info);
    background: rgba(0,0,0,0.3);
    border-radius: 3px;
}

.modal-body ul {
    margin-left: 20px;
    margin-bottom: 12px;
}

.modal-body li {
    font-size: 0.85rem;
    margin-bottom: 6px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 20px;
    background: var(--surface-700);
    border-top: 1px solid rgba(0,0,0,0.3);
}

.modal-btn {
    padding: 10px 20px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.modal-btn.primary {
    color: #fff;
    background: linear-gradient(180deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    border: 1px solid rgba(0,0,0,0.3);
    box-shadow: var(--shadow-raised-sm);
}

.modal-btn.primary:hover {
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.modal-btn.secondary {
    color: var(--surface-200);
    background: var(--surface-600);
    border: 1px solid rgba(0,0,0,0.3);
}

.modal-btn.secondary:hover {
    background: var(--surface-500);
}

/* ----------------------------------------
   Scrollbar Styling
   ---------------------------------------- */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--surface-800);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--surface-500) 0%, var(--surface-600) 100%);
    border-radius: 5px;
    border: 2px solid var(--surface-800);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--surface-400) 0%, var(--surface-500) 100%);
}

/* ----------------------------------------
   LiteGraph Overrides
   ---------------------------------------- */
.litegraph.litecontextmenu {
    background: linear-gradient(180deg, var(--surface-600) 0%, var(--surface-700) 100%) !important;
    border: 1px solid rgba(0,0,0,0.5) !important;
    border-radius: var(--border-radius-md) !important;
    box-shadow: var(--shadow-raised-lg) !important;
    padding: 6px !important;
    font-family: var(--font-sans) !important;
}

.litegraph.litecontextmenu .litemenu-entry {
    color: var(--surface-200) !important;
    padding: 8px 14px !important;
    border-radius: var(--border-radius-sm) !important;
    margin: 2px 0 !important;
    font-size: 0.85rem !important;
    transition: var(--transition-fast) !important;
}

.litegraph.litecontextmenu .litemenu-entry:hover {
    background: var(--surface-500) !important;
    color: var(--text-inverse) !important;
}

.litegraph.litecontextmenu .litemenu-entry.has_submenu::after {
    color: var(--surface-400) !important;
}

.litegraph.litecontextmenu .separator {
    background: rgba(255,255,255,0.1) !important;
    margin: 6px 10px !important;
}

/* ----------------------------------------
   Utility Classes
   ---------------------------------------- */
.hidden {
    display: none !important;
}

/* ----------------------------------------
   Responsive Adjustments
   ---------------------------------------- */
@media (max-width: 1200px) {
    :root {
        --stage-panel-width: 280px;
        --side-panel-width: 280px;
    }
    
    .toolbar-btn .btn-label {
        display: none;
    }
    
    .toolbar-btn {
        padding: 8px 10px;
    }
}