:root {
    --bg-color: #f0f2f5;
    --text-color: #333;
    --node-bg: #fff7c4;
    --panel-bg: rgba(255, 255, 255, 0.9);
    --toolbar-bg: rgba(255, 255, 255, 0.85);
    --border-color: rgba(0, 0, 0, 0.1);
    --border-light: rgba(255, 255, 255, 0.6);
    --link-color: #a0a0a0;
    --grid-dots: radial-gradient(#ccc 1.5px, transparent 1.5px);
    --hover-bg: #f0f2f5;
    --node-text: #333;
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
    --bg-color: #18191a;
    --text-color: #e4e6eb;
    --node-bg: #3a3b3c;
    --panel-bg: rgba(36, 37, 38, 0.95);
    --toolbar-bg: rgba(36, 37, 38, 0.85);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
    --link-color: #777;
    --grid-dots: radial-gradient(#333 1.5px, transparent 1.5px);
    --hover-bg: #3a3b3c;
    --node-text: #e4e6eb;
    --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    overflow: hidden;
    transition: background-color 0.3s;
}

/* Phase 9 Cursor Grabbing Override */
body.panning,
body.panning * {
    cursor: grabbing !important;
}

body.panning #canvas {
    transition: none !important;
}

/* 대시보드 (홈) */
#dashboard {
    padding: 40px 60px;
    height: 100vh;
    overflow-y: auto;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

.dashboard-header h2 {
    margin: 0;
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
    position: relative;
    min-height: 400px;
}

.project-card {
    background: var(--panel-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    height: 200px;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #4A90E2;
}

.project-thumb {
    flex: 1;
    min-height: 120px;
    background-size: cover;
    background-position: center;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--hover-bg);
}

.project-info {
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.project-title {
    font-weight: 600;
    font-size: 15px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 2px 4px;
    border-radius: 4px;
    border: 1px solid transparent;
    outline: none;
    transition: border 0.2s;
}

.project-title[contenteditable="true"]:focus,
.project-title[contenteditable="true"]:hover {
    border: 1px solid #4A90E2;
    background: var(--bg-color);
    cursor: text;
}

.project-date {
    font-size: 12px;
    color: #888;
    padding-left: 4px;
}

.create-new {
    justify-content: center;
    align-items: center;
    background: transparent;
    border: 2px dashed #aaa;
    color: #888;
    font-weight: 500;
    font-size: 15px;
    flex-direction: column;
    gap: 8px;
}

.create-new i {
    font-size: 32px;
}

.create-new:hover {
    background: rgba(74, 144, 226, 0.05);
    color: #4A90E2;
    border-color: #4A90E2;
}

.del-btn {
    position: absolute;
    right: 10px;
    bottom: 10px;
    z-index: 10;
    font-size: 16px;
    color: #E24A4A;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.del-btn:hover {
    background: #ffebee;
    border-radius: 4px;
}

.empty-state-banner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    opacity: 0.6;
    pointer-events: none;
    text-align: center;
}

.empty-state-banner i {
    font-size: 80px;
    color: var(--link-color);
}

.empty-state-banner h3 {
    margin: 0;
    font-size: 24px;
    color: var(--text-color);
}

.empty-state-banner p {
    margin: 0;
    font-size: 15px;
    color: #888;
}

.empty-state-banner.hidden {
    display: none;
}

.theme-btn {
    border: none;
    background: transparent;
    color: var(--text-color);
    font-size: 24px;
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    transition: 0.2s;
}

.theme-btn:hover {
    background: var(--hover-bg);
    color: #f5b041;
}

#editor {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

/* 검색 바 (Ctrl+F) */
#search-bar {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 2000;
    background: var(--panel-bg);
    padding: 8px 16px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    transition: opacity 0.2s, transform 0.2s;
}

#search-bar.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
}

#search-input {
    border: none;
    background: transparent;
    color: var(--text-color);
    outline: none;
    width: 180px;
    font-size: 14px;
    font-weight: 500;
}

#search-count {
    font-size: 13px;
    color: #888;
    margin-right: 4px;
    font-weight: 600;
}

#search-bar button {
    background: transparent;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: var(--text-color);
    padding: 4px 6px;
    border-radius: 4px;
    transition: 0.1s;
}

#search-bar button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
}

/* 스마트 스냅 가이드라인 */
.snap-line {
    position: absolute;
    background: transparent;
    pointer-events: none;
    z-index: 999;
    display: none;
}

#snap-line-x {
    left: -100vw;
    width: 300vw;
    height: 1px;
    border-top: 1.5px solid #FF5A5F;
}

#snap-line-y {
    top: -100vh;
    width: 1px;
    height: 300vh;
    border-left: 1.5px solid #FF5A5F;
}

.toolbar-vertical {
    position: absolute;
    top: 50%;
    left: 24px;
    transform: translateY(-50%);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--toolbar-bg);
    padding: 14px 12px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
}

.toolbar-vertical>button,
.export-dropdown-wrapper>button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 12px;
    background: transparent;
    color: var(--text-color);
    font-size: 22px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toolbar-vertical>button:hover,
.export-dropdown-wrapper>button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
    transform: scale(1.1);
}

.toolbar-vertical>button:active,
.export-dropdown-wrapper>button:active {
    transform: scale(0.95);
}

/* Phase 9 Active Selection State */
.toolbar-vertical button.active,
#link-toolbar button.active {
    box-shadow: 0 0 0 2px #4A90E2 inset !important;
    background: rgba(74, 144, 226, 0.1) !important;
    color: #4A90E2 !important;
}

.toolbar-vertical #add {
    background: #4A90E2;
    color: white;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.toolbar-vertical #add:hover {
    background: #357ABD;
    transform: scale(1.05);
}

.toolbar-vertical #btn-auto-layout {
    color: #f5b041;
}

.toolbar-vertical #btn-add-frame {
    color: #34c759;
}

.toolbar-vertical #btn-pt-mode {
    color: #9b59b6;
}

.toolbar-vertical button.danger:hover {
    background: #ffebee;
    color: #E24A4A;
}

.divider {
    height: 1px;
    width: 60%;
    margin: 4px auto;
    background: var(--border-color);
}

/* Export Dropdown Menu */
.export-dropdown-wrapper {
    position: relative;
}

.export-menu {
    position: absolute;
    left: 60px;
    top: -50px;
    background: var(--panel-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    padding: 8px;
    width: 160px;
    transition: opacity 0.2s, transform 0.2s;
    transform-origin: left top;
    z-index: 3100;
}

.export-menu.hidden {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

.export-menu button {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px;
    font-size: 14px;
    border: none;
    background: transparent;
    color: var(--text-color);
    cursor: pointer;
    border-radius: 8px;
    text-align: left;
}

.export-menu button i {
    font-size: 18px;
}

.export-menu button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
}

/* 세련된 플로팅 헬프 말풍선 */
.help-popover-container {
    position: absolute;
    bottom: 24px;
    right: 24px;
    z-index: 2000;
}

#btn-help-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--panel-bg);
    color: #f5b041;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: 0.2s;
}

#btn-help-toggle:hover {
    transform: scale(1.1);
}

.help-popover {
    position: absolute;
    bottom: 60px;
    right: 0;
    width: 340px;
    background: var(--panel-bg);
    padding: 24px;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    transform-origin: bottom right;
    transition: opacity 0.3s, transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.help-popover.hidden {
    opacity: 0;
    transform: scale(0.8) translateY(20px);
    pointer-events: none;
}

.help-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-color);
}

.help-header i.ph-fill {
    color: #f5b041;
    font-size: 22px;
}

.help-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.help-list li {
    font-size: 13.5px;
    color: var(--text-color);
    opacity: 0.85;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.5;
}

.help-list li::before {
    content: "•";
    color: #bbb;
}

.help-list b {
    color: #4A90E2;
    font-weight: 600;
    opacity: 1;
}

#minimap {
    position: absolute;
    bottom: 24px;
    left: 24px;
    width: 220px;
    height: 150px;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

#minimap-nodes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.minimap-dot {
    position: absolute;
    border-radius: 2px;
}

#minimap-viewport {
    position: absolute;
    border: 1.5px solid #4A90E2;
    background: rgba(74, 144, 226, 0.2);
    cursor: grab;
    transition: transform 0.05s linear;
}

#minimap-viewport:active {
    cursor: grabbing;
    background: rgba(74, 144, 226, 0.35);
}

#align-toolbar {
    position: absolute;
    background: var(--panel-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    padding: 6px 12px;
    z-index: 3000;
    display: flex;
    gap: 8px;
    border: 1px solid var(--border-color);
    transform: translate(-50%, -120%);
    transition: opacity 0.2s, transform 0.2s;
    align-items: center;
}

#align-toolbar.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -100%);
}

#align-toolbar button {
    background: transparent;
    border: 1px solid var(--border-light);
    font-size: 18px;
    cursor: pointer;
    padding: 6px;
    border-radius: 4px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.1s;
}

#align-toolbar button:hover {
    background: #eef2f5;
    color: #4A90E2;
    border-color: #4A90E2;
}

#text-toolbar {
    position: absolute;
    background: var(--panel-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    padding: 6px;
    z-index: 3000;
    display: flex;
    gap: 4px;
    border: 1px solid var(--border-color);
    transform: translate(-50%, -120%);
    transition: opacity 0.2s, transform 0.2s;
}

#text-toolbar.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -100%);
}

#text-toolbar button {
    background: transparent;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 4px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

#text-toolbar button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
}

#link-toolbar {
    position: absolute;
    background: var(--panel-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    padding: 6px 12px;
    z-index: 3000;
    display: flex;
    gap: 8px;
    border: 1px solid var(--border-color);
    transform: translate(-50%, -120%);
    transition: opacity 0.2s, transform 0.2s;
    align-items: center;
}

#link-toolbar.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -100%);
}

#link-toolbar button {
    background: transparent;
    border: 1px solid var(--border-color);
    font-size: 16px;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 4px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.1s;
}

#link-toolbar button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
    border-color: #4A90E2;
}

.vert-divider {
    width: 1px;
    height: 24px;
    background: var(--border-color);
}

#map {
    position: relative;
    width: 100vw;
    height: 100vh;
    background-image: var(--grid-dots);
    background-size: 20px 20px;
    overflow: hidden;
    cursor: default;
}

#canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    transform-origin: 0 0;
    transition: transform 0.1s ease-out;
}

#links {
    position: absolute;
    top: 0;
    left: 0;
    overflow: visible;
    pointer-events: none;
    z-index: 1;
}

#links path {
    fill: none;
    stroke: var(--link-color);
    stroke-width: 3px;
    pointer-events: stroke;
    cursor: pointer;
    transition: stroke 0.2s, stroke-width 0.2s;
}

#links path.selected {
    stroke-width: 5px !important;
    stroke: #4A90E2 !important;
    box-shadow: 0 0 10px rgba(74, 144, 226, 0.5);
}

.lasso-path {
    fill: rgba(74, 144, 226, 0.1) !important;
    stroke: #4A90E2 !important;
    stroke-width: 1.5px !important;
    stroke-dasharray: 4 4 !important;
    pointer-events: none !important;
}

.sketch-path {
    fill: none !important;
    stroke: #f5b041 !important;
    stroke-width: 4px !important;
    stroke-linecap: round !important;
    stroke-linejoin: round !important;
}

/* Phase 9 SVG Dash Flow Animation */
.flow-animation {
    stroke-dasharray: 8, 8 !important;
    animation: flow 1s linear infinite;
}

@keyframes flow {
    to {
        stroke-dashoffset: -16;
    }
}

#nodes-container {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
}

.node {
    position: absolute;
    min-width: 140px;
    min-height: 44px;
    background: var(--node-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    padding: 12px 16px;
    cursor: pointer;
    user-select: none;
    font-size: 14px;
    color: var(--node-text);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-align: center;
    word-break: break-word;
    outline: none;
    z-index: 10;
    transition: left 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), top 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.2s, opacity 0.3s;
}

.node:hover {
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.25);
    z-index: 11;
}

.node.ellipse {
    border-radius: 50px;
    padding: 12px 24px;
}

.node.diamond {
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    border-radius: 0;
    min-width: 160px;
    min-height: 80px;
    padding: 20px;
}

.node.postit {
    border-radius: 2px 2px 20px 2px;
    background: #FFF59D !important;
    color: #333 !important;
    box-shadow: 2px 4px 8px rgba(0, 0, 0, 0.15), inset -2px -15px 15px rgba(0, 0, 0, 0.03);
    font-family: 'Nanum Pen Script', cursive;
    font-size: 24px;
    padding: 16px 20px;
}

.node.postit .text-content {
    font-family: inherit;
    font-size: 1.2em;
    font-weight: normal;
    background: transparent;
}

.node.highlighted {
    box-shadow: 0 0 0 6px rgba(245, 176, 65, 0.7) !important;
    z-index: 100 !important;
    background: #fff !important;
    color: #333 !important;
}

.node.dimmed {
    opacity: 0.15 !important;
}

.node.frame {
    background: rgba(74, 144, 226, 0.05) !important;
    border: 3px solid rgba(74, 144, 226, 0.4);
    border-radius: 16px !important;
    box-shadow: none !important;
    z-index: 1 !important;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 10px 16px;
    clip-path: none;
    resize: both;
    overflow: hidden;
}

.node.frame>.text-content {
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(6px);
    border-radius: 4px;
    padding: 4px 8px;
    width: fit-content;
    font-size: 18px;
    font-weight: bold;
    color: #4A90E2;
    text-align: left;
    opacity: 0.8;
}

.node.frame .port {
    display: none !important;
}

.node.frame:hover {
    border-color: rgba(74, 144, 226, 0.8);
    background: rgba(74, 144, 226, 0.08) !important;
}

.node .text-content {
    width: 100%;
    pointer-events: none;
    white-space: pre-wrap;
    outline: none;
    line-height: 1.4;
}

.node .text-content code {
    background: rgba(0, 0, 0, 0.06);
    padding: 2px 4px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.9em;
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.1);
    color: #d63384;
}

.node.editing .text-content {
    pointer-events: auto;
    cursor: text;
}

.node.editing {
    border: 2px solid #4A90E2;
    background: var(--panel-bg) !important;
    z-index: 30;
}

.node.selected {
    border: 2px solid #4A90E2;
    box-shadow: 0 0 0 4px rgba(74, 144, 226, 0.3);
    z-index: 15;
}

.node-media {
    max-width: 100%;
    max-height: 200px;
    border-radius: 6px;
    object-fit: contain;
    display: block;
    pointer-events: none;
}

.node.collapsed {
    opacity: 0.85;
    border: 1px dotted #888;
}

.node.locked::after {
    content: "\2627";
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 4px;
    top: 4px;
    font-size: 12px;
    color: #E24A4A;
    opacity: 0.8;
}

.collapse-btn {
    position: absolute;
    right: -12px;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--panel-bg);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--text-color);
    opacity: 0.7;
    cursor: pointer;
    z-index: 25;
    font-weight: bold;
    transition: all 0.2s;
}

.collapse-btn:hover {
    background: var(--hover-bg);
    border-color: #4A90E2;
    color: #4A90E2;
    opacity: 1;
    transform: translateY(-50%) scale(1.15);
}

.node.collapsed .collapse-btn {
    border-color: #E24A4A;
    color: #E24A4A;
    background: rgba(226, 74, 74, 0.1);
}

.port {
    position: absolute;
    width: 14px;
    height: 14px;
    background-color: #4A90E2;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.2s, background-color 0.2s, transform 0.2s;
    cursor: crosshair;
    z-index: 20;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
}

/* Mobile Port Always Visible Hint (opacity slight) */
@media (max-width: 1024px) {
    .port {
        opacity: 0.4;
    }
}

.node:hover .port {
    opacity: 1;
}

.port:hover,
.port.active {
    transform: scale(1.4);
    background-color: #E24A4A;
    opacity: 1 !important;
    z-index: 30;
}

.port.top {
    top: -7px;
    left: calc(50% - 7px);
}

.port.bottom {
    bottom: -7px;
    left: calc(50% - 7px);
}

.port.left {
    left: -7px;
    top: calc(50% - 7px);
}

.port.right {
    right: -7px;
    top: calc(50% - 7px);
}

#selection-box {
    position: absolute;
    border: 1px solid rgba(74, 144, 226, 0.8);
    background-color: rgba(74, 144, 226, 0.2);
    pointer-events: none;
    display: none;
    z-index: 999;
}

.temp-line {
    pointer-events: none;
    stroke: #4A90E2 !important;
    stroke-dasharray: 5, 5;
    stroke-width: 3px !important;
    fill: none;
    marker-end: url(#arrowhead-selected) !important;
}

/* 컨텍스트 메뉴 */
#context-menu {
    position: absolute;
    background: var(--panel-bg);
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    padding: 16px;
    z-index: 3500;
    min-width: 180px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
    transition: opacity 0.1s ease, transform 0.1s ease;
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

#context-menu.hidden {
    transform: translateY(-5px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.menu-section {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.menu-title {
    font-size: 11px;
    font-weight: 700;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.color-palette {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.color-btn {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.1s;
}

.color-btn:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.shape-palette {
    display: flex;
    gap: 6px;
}

.shape-palette button {
    flex: 1;
    padding: 8px 0;
    font-size: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-color);
    font-weight: 500;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.1s;
}

.shape-palette button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
    border-color: #4A90E2;
}

.lock-btn {
    width: 100%;
    padding: 8px;
    font-size: 13px;
    font-weight: 600;
    background: rgba(226, 74, 74, 0.1);
    color: #E24A4A;
    border: 1px solid #E24A4A;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.lock-btn:hover {
    background: #E24A4A;
    color: white;
}

.z-depth-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.z-depth-palette button {
    flex: 1;
    padding: 6px;
    font-size: 12px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: 0.1s;
}

.z-depth-palette button:hover {
    background: var(--hover-bg);
    color: #4A90E2;
    border-color: #4A90E2;
}

#edge-labels-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    z-index: 5;
}

/* Phase 9 Edge Label UX Pill Box */
.edge-label {
    position: absolute;
    transform: translate(-50%, -50%);
    padding: 4px 10px;
    border-radius: 12px;
    background: #fff;
    border: 1px solid #ddd;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
    font-size: 12px;
    color: var(--text-color);
    cursor: text;
    pointer-events: auto;
    min-width: 40px;
    min-height: 24px;
    text-align: center;
    backdrop-filter: blur(4px);
    transition: box-shadow 0.2s, border-color 0.2s;
    font-weight: 500;
}

.edge-label:hover {
    border-color: #4A90E2;
}

.edge-label:focus {
    outline: none;
    z-index: 6;
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.4);
    border-color: #4A90E2;
}

.edge-label:empty::before {
    content: "텍스트";
    color: #bbb;
    opacity: 0.6;
}

.edge-label-wrap {
    position: absolute;
    pointer-events: auto;
}

.edge-delete-btn {
    position: absolute;
    right: -16px;
    top: -16px;
    width: 22px;
    height: 22px;
    background: #E24A4A;
    color: white;
    border-radius: 50%;
    font-size: 10px;
    font-weight: bold;
    border: 2px solid #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
}

.edge-label-wrap:hover .edge-delete-btn {
    display: flex;
}

.edge-label-wrap.active .edge-delete-btn {
    display: flex;
}

/* PT 모드 오버레이 */
#pt-mode-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: transparent;
    z-index: 15;
    pointer-events: none;
    transition: opacity 0.5s;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 40px;
}

#pt-mode-overlay.hidden {
    opacity: 0;
    pointer-events: none !important;
}

.pt-controls {
    pointer-events: auto;
    align-self: center;
    margin-top: auto;
    margin-bottom: 20px;
    background: rgba(0, 0, 0, 0.8);
    border-radius: 30px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 20px;
    color: white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
}

.pt-controls button {
    background: transparent;
    border: none;
    color: white;
    font-size: 16px;
    cursor: pointer;
    padding: 10px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background 0.2s;
    text-transform: uppercase;
    font-weight: bold;
    letter-spacing: 1px;
}

.pt-controls button:hover {
    background: rgba(255, 255, 255, 0.2);
}

.pt-status {
    font-size: 18px;
    font-weight: bold;
    font-variant-numeric: tabular-nums;
    width: 60px;
    text-align: center;
}

.pt-close {
    position: absolute;
    top: 30px;
    right: 40px;
    pointer-events: auto;
    background: rgba(0, 0, 0, 0.8);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: bold;
    font-size: 14px;
    transition: 0.2s;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.pt-close:hover {
    background: #E24A4A;
}

/* Phase 12 Minimap Top Right Override */
#minimap {
    position: absolute !important;
    top: 20px !important;
    right: 20px !important;
    bottom: auto !important;
    left: auto !important;
    z-index: 2000;
}