/**
 * Skill Tree Planner - Stylesheet
 * Modern dark theme with vibrant accents
 */

:root {
    --color-bg-primary: #0f0f13;
    --color-bg-secondary: #16161c;
    --color-bg-tertiary: #1e1e26;
    --color-bg-elevated: #252530;
    --color-bg-hover: #2a2a38;
    --color-accent-primary: #6366f1;
    --color-accent-secondary: #8b5cf6;
    --color-accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --color-node-locked: #3a3a4a;
    --color-node-locked-border: #4a4a5a;
    --color-node-unlockable: #1e3a5f;
    --color-node-unlockable-border: #3b82f6;
    --color-node-active: #1e4620;
    --color-node-active-border: #22c55e;
    --color-node-maxed: #4c1d95;
    --color-node-maxed-border: #a855f7;
    --color-node-invalid: #7f1d1d;
    --color-node-invalid-border: #ef4444;
    --color-connection-inactive: #3a3a4a;
    --color-connection-active: #22c55e;
    --color-connection-locked: #4a4a5a;
    --color-text-primary: #f4f4f5;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-text-accent: #a5b4fc;
    --color-border: #27272a;
    --color-border-light: #3f3f46;
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    --font-family: "Inter", system-ui, -apple-system, sans-serif;
    --font-size-xs: 0.60rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --toolbar-height: 60px;
    --sidebar-width: 320px;
    --node-size: 100px;
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

html,
body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    -webkit-font-smoothing: antialiased;
}

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

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--toolbar-height);
    padding: 0 var(--space-lg);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
    z-index: 100;
}

.toolbar_left,
.toolbar_right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.toolbar_center {
    display: flex;
    align-items: center;
}

.app_title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tree_selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.tree_select {
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    min-width: 180px;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.tree_select:hover,
.tree_select:focus {
    border-color: var(--color-accent-primary);
    outline: none;
}

.point_display {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.point_label {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.points_value {
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--color-text-accent);
}

.point_separator {
    color: var(--color-text-muted);
}

.mode_toggle {
    display: flex;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: 2px;
    border: 1px solid var(--color-border);
}

.btn_mode {
    padding: var(--space-sm) var(--space-md);
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn_mode:hover {
    color: var(--color-text-primary);
}

.btn_mode.active {
    background: var(--color-accent-primary);
    color: white;
}

.toolbar_actions {
    display: flex;
    gap: var(--space-sm);
}

.zoom_controls {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0 var(--space-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.zoom_level {
    min-width: 48px;
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    cursor: default;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn_primary {
    background: var(--color-accent-gradient);
    color: white;
}

.btn_primary:hover {
    filter: brightness(1.1);
    box-shadow: var(--shadow-glow);
}

.btn_secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn_secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.btn_danger {
    background: var(--color-error);
    color: white;
}

.btn_danger:hover {
    filter: brightness(1.1);
}

.btn_icon {
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.btn_icon:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.github_link {
    border-radius: 50%;
    /* Make it circular */
}

.github_link:hover {
    border-color: var(--color-accent-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.btn_tool {
    flex: 1;
    padding: var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    flex-direction: column;
    gap: var(--space-sm);
}

.btn_tool:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent-primary);
}

.btn_tool.active {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--color-accent-primary);
}

.main_content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.canvas_container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at center, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%),
        repeating-linear-gradient(0deg, transparent, transparent 49px, var(--color-border) 50px),
        repeating-linear-gradient(90deg, transparent, transparent 49px, var(--color-border) 50px);
    background-size: 100% 100%, 50px 50px, 50px 50px;
}

.connections_layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: visible;
}

.connections_layer>* {
    pointer-events: stroke;
}

/* Temp connection layer - not transformed, used for drag preview */
.temp_connection_layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
    overflow: visible;
}

.nodes_layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

.skill_node {
    position: absolute;
    width: var(--node-size);
    height: var(--node-size);
    border-radius: var(--radius-lg);
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-sm);
    user-select: none;
    pointer-events: auto;
}

/* Node Logic Badges */
.node_logic_badge {
    position: absolute;
    top: -5px;
    left: -5px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px 4px;
    font-size: 9px;
    font-weight: 700;
    color: var(--color-text-secondary);
    z-index: 5;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
}

.skill_node.unlockable .node_logic_badge {
    border-color: var(--color-accent-primary);
    color: var(--color-accent-primary);
}

.skill_node.active .node_logic_badge,
.skill_node.maxed .node_logic_badge {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: white;
}

.skill_node.logic-sum .node_logic_badge::before {
    content: "Σ ";
}

.skill_node:hover {
    transform: scale(1.05);
    z-index: 10;
}

.skill_node.selected {
    box-shadow: 0 0 0 3px var(--color-accent-primary);
}

/* Node Types */
.skill_node.type-passive {
    border-radius: 50%;
}

.skill_node.type-passive .node_logic_badge {
    top: -2px;
    left: -2px;
}

.skill_node.type-active {
    border-radius: var(--radius-lg);
}

/* Status Indicators */
.node_status_indicator {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 20px;
    height: 20px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    z-index: 5;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.skill_node.locked .node_status_indicator::before {
    content: "🔒";
}

.skill_node.unlockable .node_status_indicator {
    border-color: var(--color-accent-primary);
    background: var(--color-bg-tertiary);
}

.skill_node.unlockable .node_status_indicator::before {
    content: "★";
    color: var(--color-accent-primary);
}

.skill_node.active .node_status_indicator,
.skill_node.maxed .node_status_indicator {
    background: var(--color-accent-primary);
    border-color: var(--color-accent-primary);
    color: white;
}

.skill_node.active .node_status_indicator::before {
    content: "●";
}

.skill_node.maxed .node_status_indicator::before {
    content: "✓";
}

/* Relationship Highlighting */
.skill_node.highlight-parent {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.6);
    transform: scale(1.02);
}

.skill_node.highlight-child {
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.6);
    transform: scale(1.02);
}

.skill_node.locked {
    background: var(--color-node-locked);
    border-color: var(--color-node-locked-border);
    opacity: 0.6;
}

.skill_node.unlockable {
    background: var(--color-node-unlockable);
    border-color: var(--color-node-unlockable-border);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
    animation: pulse 2s ease-in-out infinite;
}

.skill_node.active {
    background: var(--color-node-active);
    border-color: var(--color-node-active-border);
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.3);
}

.skill_node.maxed {
    background: var(--color-node-maxed);
    border-color: var(--color-node-maxed-border);
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.4);
}

.skill_node.invalid {
    background: var(--color-node-invalid);
    border-color: var(--color-node-invalid-border);
}

.skill_node.connecting {
    box-shadow: 0 0 0 3px #f59e0b, 0 0 20px rgba(245, 158, 11, 0.5);
    border-color: #f59e0b;
    animation: none;
}

.node_icon {
    width: 32px;
    height: 32px;
    margin-bottom: var(--space-xs);
    opacity: 0.8;
}

.node_name {
    font-size: var(--font-size-xs);
    font-weight: 500;
    line-height: 1.2;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.node_rank {
    position: absolute;
    bottom: -8px;
    right: -8px;
    min-width: 24px;
    height: 24px;
    padding: 0 6px;
    background: var(--color-bg-elevated);
    border: 2px solid currentColor;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.connection_path {
    fill: none;
    stroke: var(--color-connection-inactive);
    stroke-width: 3;
    stroke-linecap: round;
    transition: stroke var(--transition-fast);
    pointer-events: stroke;
    cursor: pointer;
}

.connection_path:hover {
    stroke: var(--color-error);
    stroke-width: 5;
}

.connection_path.active {
    stroke: var(--color-connection-active);
}

.connection_path.active:hover {
    stroke: var(--color-error);
}

.connection_path.locked {
    stroke: var(--color-connection-locked);
    stroke-dasharray: 8 4;
}

.connection_arrow {
    fill: var(--color-connection-inactive);
    transition: fill var(--transition-fast);
}

.connection_arrow.active {
    fill: var(--color-connection-active);
}

.empty_state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 5;
}

.empty_state.hidden {
    display: none;
}

.empty_state_content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.empty_state_icon {
    color: var(--color-text-muted);
    opacity: 0.5;
}

.empty_state h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.empty_state p {
    color: var(--color-text-secondary);
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-secondary);
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow-y: auto;
    transition: width var(--transition-normal);
}

.sidebar.collapsed {
    width: 0;
    overflow: hidden;
}

/* Floating button to show sidebar when collapsed */
.btn_show_sidebar {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 48px;
    padding: 0;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    z-index: 20;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn_show_sidebar:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* Show the button when sidebar is collapsed */
.sidebar.collapsed~.btn_show_sidebar {
    display: flex;
}

.sidebar_header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.sidebar_title {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.sidebar_panel {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.sidebar_panel.hidden {
    display: none;
}

.panel_title {
    font-size: var(--font-size-md);
    font-weight: 600;
    margin-bottom: var(--space-md);
    color: var(--color-text-accent);
}

.panel_description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.validation_warnings {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-md);
}

.validation_warnings.hidden {
    display: none;
}

.warning_title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-warning);
    margin-bottom: var(--space-sm);
}

.warning_list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.warning_list li {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    padding: var(--space-xs) 0;
    border-bottom: 1px solid rgba(245, 158, 11, 0.2);
}

.warning_list li:last-child {
    border-bottom: none;
}

.form_group {
    margin-bottom: var(--space-md);
}

.form_group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
}

.form_row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-fast);
}

.input:hover {
    border-color: var(--color-border-light);
}

.input:focus {
    border-color: var(--color-accent-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.input::placeholder {
    color: var(--color-text-muted);
}

.textarea {
    min-height: 80px;
    resize: vertical;
}

.textarea_large {
    min-height: 200px;
    font-family: monospace;
}

.form_hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.panel_hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-md);
    padding: var(--space-sm);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    line-height: 1.4;
}

.form_actions {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-sm);
}

.tool_buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.tooltip {
    position: fixed;
    z-index: 1000;
    min-width: 200px;
    max-width: 280px;
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    pointer-events: none;
    opacity: 1;
    transition: opacity var(--transition-fast);
}

.tooltip.hidden {
    opacity: 0;
    visibility: hidden;
}

.tooltip_header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.tooltip_name {
    font-weight: 600;
    color: var(--color-text-primary);
}

.tooltip_rank {
    font-size: var(--font-size-sm);
    color: var(--color-text-accent);
    background: var(--color-bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.tooltip_description {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.tooltip_cost {
    font-size: var(--font-size-sm);
    color: var(--color-text-accent);
}

.tooltip_status {
    font-size: var(--font-size-xs);
    margin-top: var(--space-sm);
    padding-top: var(--space-sm);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal.hidden {
    display: none;
}

.modal_backdrop {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal_content {
    position: relative;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.modal_small {
    max-width: 400px;
}

.modal_header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border);
}

.modal_header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.modal_body {
    padding: var(--space-lg);
    overflow-y: auto;
}

.modal_body p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.modal_footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-sm);
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.dropzone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    text-align: center;
    color: var(--color-text-muted);
    margin-top: var(--space-md);
    transition: all var(--transition-fast);
}

.dropzone.dragover {
    border-color: var(--color-accent-primary);
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-text-accent);
}

.hidden {
    display: none !important;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.6;
    }
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-primary);
}

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

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

/* Grid Layer */
.grid_layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: visible;
}

.grid_line {
    stroke: var(--color-border);
    stroke-width: 1;
    opacity: 0.5;
}

/* Grid Controls */
.grid_controls {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.grid_controls_title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.form_group_inline {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.form_group_inline label {
    display: inline;
    margin-bottom: 0;
}

.checkbox {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent-primary);
    cursor: pointer;
}

/* Toolbar Grid Controls */
.grid_controls_toolbar {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.toolbar_checkbox {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
    background: transparent;
    border: none;
}

.toolbar_checkbox:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
}

.toolbar_checkbox input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

.toolbar_checkbox:has(input:checked) {
    color: var(--color-accent-primary);
}

.grid_size_input {
    width: 48px;
    height: 36px;
    padding: 0 var(--space-xs);
    background: transparent;
    border: none;
    border-left: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-family: inherit;
    font-size: var(--font-size-sm);
    text-align: center;
    -moz-appearance: textfield;
}

.grid_size_input:focus {
    color: var(--color-text-primary);
    outline: none;
}

.grid_size_input::-webkit-inner-spin-button,
.grid_size_input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
    display: none;
}

/* ============================================================================
   Resources System
   ============================================================================ */

/* Resources Display in Toolbar */
.resources_display {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-lg);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.resource_item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.resource_indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.resource_name {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.resource_value {
    font-weight: 600;
    font-size: var(--font-size-sm);
    color: var(--color-text-accent);
}

/* Resources Section in Sidebar */
.resources_section {
    margin-bottom: var(--space-md);
}

.resources_section > label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.resources_list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.resource_row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.resource_row .resource_indicator {
    width: 16px;
    height: 16px;
}

.resource_row .resource_info {
    flex: 1;
    min-width: 0;
}

.resource_row .resource_name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.resource_row .resource_pool {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.resource_row .resource_actions {
    display: flex;
    gap: var(--space-xs);
}

.btn_small {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
}

.btn_icon_small {
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: 1px solid transparent;
    color: var(--color-text-muted);
}

.btn_icon_small:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn_icon_small.btn_danger:hover {
    background: rgba(239, 68, 68, 0.2);
    color: var(--color-error);
}

/* Node Resource Costs Editor */
.node_resource_costs {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.rank_cost_row {
    padding: var(--space-sm);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.rank_cost_header {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-accent);
    margin-bottom: var(--space-xs);
}

.rank_cost_inputs {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.rank_cost_input_row {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.rank_cost_input_row .resource_indicator {
    width: 12px;
    height: 12px;
}

.rank_cost_input_row .resource_label {
    flex: 1;
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.rank_cost_input_row input {
    width: 60px;
    padding: var(--space-xs);
    font-size: var(--font-size-xs);
    text-align: center;
}

/* Color Input */
.input_color {
    width: 100%;
    height: 36px;
    padding: 2px;
    cursor: pointer;
}

.input_color::-webkit-color-swatch-wrapper {
    padding: 2px;
}

.input_color::-webkit-color-swatch {
    border: none;
    border-radius: var(--radius-sm);
}