/* Dashboard Styles - Enterprise Engineering Design System */

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

/* ========== APP LAYOUT ========== */
.app-layout {
    font-family: var(--vm-font-ui, 'Inter', sans-serif);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--vm-bg-primary);
    color: var(--vm-text-primary);
}

/* ========== NAVBAR ========== */
.app-navbar {
    background: var(--vm-bg-header);
    border-bottom: 1px solid var(--vm-border);
    padding: 0 32px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
}

.app-navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.app-navbar-brand img {
    height: 24px;
    opacity: 0.9;
}

.app-navbar-brand span {
    font-size: 15px;
    font-weight: 600;
    color: var(--vm-text-primary);
    letter-spacing: 0.3px;
}

.app-navbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--vm-bg-hover), var(--vm-accent));
    border: 2px solid var(--vm-border);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 12px;
    letter-spacing: 0.5px;
}

/* ========== USER MENU ========== */
.user-menu {
    position: relative;
}

.user-menu-trigger {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    border-radius: 50%;
    transition: box-shadow 0.15s;
}

.user-menu-trigger:hover .user-avatar {
    box-shadow: 0 0 0 3px rgba(47, 107, 255, 0.2);
}

.user-menu-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 260px;
    background: var(--vm-bg-secondary);
    border-radius: 4px;
    box-shadow: 0 4px 16px var(--vm-shadow-color);
    border: 1px solid var(--vm-border);
    z-index: 1000;
    overflow: hidden;
    animation: menuFadeIn 0.15s ease;
}

.user-menu-dropdown.open {
    display: block;
}

@keyframes menuFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.user-menu-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-bottom: 1px solid var(--vm-border-light);
}

.user-avatar-lg {
    width: 40px !important;
    height: 40px !important;
    font-size: 14px !important;
}

.user-menu-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.user-menu-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--vm-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-menu-email {
    font-size: 11px;
    color: var(--vm-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-menu-divider {
    height: 1px;
    background: var(--vm-border-light);
}

.user-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    font-size: 13px;
    color: var(--vm-text-secondary);
    text-decoration: none;
    transition: background 0.1s;
    cursor: pointer;
}

.user-menu-item:hover {
    background: var(--vm-bg-hover);
}

.user-menu-logout {
    color: var(--vm-danger);
}

.user-menu-logout:hover {
    background: rgba(192, 86, 86, 0.06);
}

/* ========== MAIN CONTENT ========== */
.app-content {
    flex: 1;
    padding: 32px;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* ========== WELCOME SECTION ========== */
.welcome-section {
    margin-bottom: 32px;
}

.welcome-section h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--vm-text-primary);
    margin: 0 0 4px;
}

.welcome-section p {
    font-size: 14px;
    color: var(--vm-text-secondary);
    margin: 0;
}

/* ========== SECTION HEADERS ========== */
.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-header h2 {
    font-weight: 600;
    color: var(--vm-text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 13px;
}

.section-header .badge-count {
    background: var(--vm-overlay-medium);
    color: var(--vm-text-secondary);
    font-size: 11px;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 12px;
    margin-left: 8px;
}

/* ========== PROJECT GRID ========== */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
    margin-bottom: 40px;
}

/* ========== PROJECT CARD ========== */
.project-card {
    background: var(--vm-bg-secondary);
    border-radius: 4px;
    padding: 20px;
    border: 1px solid var(--vm-border);
    transition: all 0.15s;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.project-card:hover {
    border-color: var(--vm-border-strong);
    box-shadow: 0 2px 8px var(--vm-shadow-color);
}

.project-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 10px;
}

.project-card-header h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--vm-text-primary);
    margin: 0;
    line-height: 1.3;
}

.project-status {
    font-size: 10px;
    font-weight: 500;
    padding: 3px 10px;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
    margin-left: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-planning    { background: rgba(113,128,150,0.1); color: #718096; }
.status-progress    { background: rgba(47,107,255,0.08); color: #2F6BFF; }
.status-completed   { background: rgba(76,149,108,0.08); color: #4C956C; }
.status-onhold      { background: rgba(198,144,38,0.08); color: #C69026; }
.status-unknown     { background: rgba(113,128,150,0.06); color: #7B8794; }

.project-card-desc {
    font-size: 12px;
    color: var(--vm-text-secondary);
    margin-bottom: 14px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* PROGRESS BAR */
.project-progress {
    margin-bottom: 10px;
}

.progress-bar-bg {
    height: 4px;
    background: var(--vm-border-light);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 2px;
    background: var(--vm-accent);
    transition: width 0.4s ease;
}

.progress-label {
    font-size: 11px;
    color: var(--vm-text-muted);
    margin-top: 4px;
    display: flex;
    justify-content: space-between;
}

/* CARD META */
.project-card-meta {
    display: flex;
    gap: 16px;
    font-size: 11px;
    color: var(--vm-text-muted);
}

.project-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ========== EMPTY STATE ========== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--vm-text-muted);
}

.empty-state h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--vm-text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 13px;
}

/* ========== ERROR ========== */
.dashboard-error {
    padding: 16px 20px;
    border-radius: 4px;
    background: rgba(192, 86, 86, 0.06);
    border: 1px solid rgba(192, 86, 86, 0.2);
    color: var(--vm-danger);
    font-size: 13px;
    margin-bottom: 24px;
}

.dashboard-error pre {
    margin: 8px 0 0;
    white-space: pre-wrap;
    word-break: break-all;
    font-size: 12px;
    color: rgba(192, 86, 86, 0.7);
}

/* ========== FOOTER ========== */
.app-footer {
    padding: 16px 32px;
    border-top: 1px solid var(--vm-border-light);
    font-size: 11px;
    color: var(--vm-text-muted);
    display: flex;
    justify-content: space-between;
}

.app-footer a {
    color: var(--vm-text-secondary);
    text-decoration: none;
    margin-left: 16px;
    transition: color 0.15s;
}

.app-footer a:hover {
    color: var(--vm-text-primary);
}

/* ========== PROJECT HEADER ========== */
.project-header {
    margin-bottom: 28px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--vm-text-muted);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.15s;
}

.back-link:hover {
    color: var(--vm-text-primary);
}

.project-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--vm-text-primary);
    margin: 0 0 4px;
}

.project-header p {
    font-size: 13px;
    color: var(--vm-text-muted);
    margin: 0;
}

/* ========== TREE CONTAINER ========== */
.tree-container {
    background: var(--vm-bg-secondary);
    border: 1px solid var(--vm-border);
    border-radius: 4px;
    overflow: hidden;
}

.tree-toolbar {
    display: flex;
    gap: 8px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--vm-border-light);
}

.tree-btn {
    padding: 6px 14px;
    border-radius: 4px;
    border: 1px solid var(--vm-border);
    background: var(--vm-bg-secondary);
    color: var(--vm-text-secondary);
    font-size: 12px;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.15s;
}

.tree-btn:hover {
    background: var(--vm-bg-hover);
    color: var(--vm-text-primary);
}

.tree-scroll {
    overflow-x: auto;
    padding: 24px;
}

/* ========== HORIZONTAL TREE ========== */
.h-tree {
    display: inline-block;
    min-width: 100%;
}

.h-tree ul {
    display: flex;
    flex-direction: column;
    list-style: none;
    margin: 0;
    padding: 0;
    position: relative;
    padding-left: 32px;
}

.h-tree > ul {
    padding-left: 0;
}

.h-tree li {
    position: relative;
    padding: 4px 0;
}

/* Connection lines */
.h-tree li:not(.leaf)::before,
.h-tree ul::before {
    content: '';
    position: absolute;
}

.h-tree ul::before {
    left: 16px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--vm-border);
}

.h-tree ul > li::before {
    content: '';
    position: absolute;
    left: -16px;
    top: 50%;
    width: 16px;
    height: 1px;
    background: var(--vm-border);
}

.h-tree > ul > li::before {
    display: none;
}

.h-tree li.collapsed > ul {
    display: none;
}

/* ========== TREE NODE ========== */
.tree-node {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 3px;
    background: var(--vm-bg-secondary);
    border: 1px solid var(--vm-border);
    transition: all 0.1s;
    cursor: default;
    white-space: nowrap;
}

.tree-node:hover {
    background: var(--vm-bg-hover);
    border-color: var(--vm-border-strong);
}

/* Type-based accent colors */
.tree-node.rem-function { border-left: 3px solid var(--vm-warning); }
.tree-node.rem-requirement { border-left: 3px solid var(--vm-variant-color); }
.tree-node.rem-component { border-left: 3px solid var(--vm-default-color); }
.tree-node.rem-interface { border-left: 3px solid #6B46C1; }

/* ========== FEATURE TREE: VARIANT MANAGEMENT COLORS ========== */
.tree-node.ft-variant { border-left: 3px solid var(--vm-variant-color); }
.tree-node.ft-option { border-left: 3px solid var(--vm-option-color); }
.tree-node.ft-root { border-left: 3px solid var(--vm-default-color); }
.tree-node.ft-default { border-left: 3px solid var(--vm-border); }
.tree-node.has-exclude { border-color: var(--vm-exclude-color); }
.tree-node.has-mandatory { border-left: 3px solid var(--vm-mandatory-color); }
.tree-node.is-eliminated { opacity: 0.5; }
.tree-node.is-eliminated .tree-node-name { text-decoration: line-through; }

/* Node type badges */
.tree-node-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 3px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
    flex-shrink: 0;
}

.tree-node-badge.badge-variant {
    background: rgba(47, 107, 255, 0.1);
    color: var(--vm-variant-color);
    border: 1px solid rgba(47, 107, 255, 0.2);
}

.tree-node-badge.badge-option {
    background: rgba(76, 149, 108, 0.1);
    color: var(--vm-option-color);
    border: 1px solid rgba(76, 149, 108, 0.2);
}

.tree-node-badge.badge-root {
    background: rgba(113, 128, 150, 0.1);
    color: var(--vm-default-color);
    border: 1px solid rgba(113, 128, 150, 0.2);
}

/* Relation badges */
.tree-node-rel {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    font-size: 9px;
    font-weight: 700;
    flex-shrink: 0;
}

.tree-node-rel.rel-exclude {
    background: rgba(192, 86, 86, 0.1);
    color: var(--vm-exclude-color);
    border: 1px solid rgba(192, 86, 86, 0.2);
}

.tree-node-rel.rel-mandatory {
    background: rgba(53, 92, 125, 0.1);
    color: var(--vm-mandatory-color);
    border: 1px solid rgba(53, 92, 125, 0.2);
}

.tree-node-rel.rel-eliminate {
    background: rgba(155, 44, 44, 0.1);
    color: var(--vm-eliminate-color);
    border: 1px solid rgba(155, 44, 44, 0.2);
}

.tree-node-rel.rel-ifthen {
    background: rgba(60, 145, 179, 0.1);
    color: var(--vm-ifthen-color);
    border: 1px solid rgba(60, 145, 179, 0.2);
}

/* ========== TREE LEGEND ========== */
.tree-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--vm-border-light);
    font-size: 11px;
    color: var(--vm-text-muted);
}

.tree-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.tree-legend-swatch {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

/* ========== VARIANTS ANALYSIS PANEL ========== */
.variants-panel {
    margin-top: 24px;
    background: var(--vm-bg-secondary);
    border: 1px solid var(--vm-border);
    border-radius: 4px;
    padding: 24px;
}

.variants-panel h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--vm-text-primary);
    margin-bottom: 16px;
}

.variants-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.variants-stat {
    background: var(--vm-bg-tertiary);
    border: 1px solid var(--vm-border);
    border-radius: 4px;
    padding: 16px;
    text-align: center;
}

.variants-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--vm-text-primary);
}

.variants-stat-label {
    font-size: 11px;
    color: var(--vm-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 4px;
}

.variants-stat-value.text-green { color: var(--vm-success); }
.variants-stat-value.text-red { color: var(--vm-danger); }
.variants-stat-value.text-blue { color: var(--vm-accent); }

/* ========== VIEW TABS ========== */
.view-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--vm-border);
}

.view-tab {
    padding: 10px 24px;
    border: none;
    background: none;
    color: var(--vm-text-muted);
    font-size: 13px;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.1s;
}

.view-tab:hover {
    color: var(--vm-text-primary);
}

.view-tab.active {
    color: var(--vm-text-primary);
    border-bottom-color: var(--vm-accent);
}

.view-panel { display: none; }
.view-panel.active { display: block; }

/* ========== DIAGRAM ========== */
.diagram-container {
    background: var(--vm-bg-secondary);
    border: 1px solid var(--vm-border);
    border-radius: 4px;
    overflow: hidden;
}

.diagram-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--vm-border-light);
}

#treeDiagram { width: 100%; min-height: 700px; }
#treeDiagram svg { display: block; width: 100%; min-height: 700px; }

.tree-node.rem-system { border-left: 3px solid var(--vm-danger); }
.tree-node.rem-default { border-left: 3px solid var(--vm-border); }

/* Toggle button */
.tree-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 3px;
    border: none;
    background: var(--vm-bg-hover);
    color: var(--vm-text-muted);
    cursor: pointer;
    transition: all 0.1s;
    padding: 0;
    flex-shrink: 0;
}

.tree-toggle:hover {
    background: var(--vm-bg-active);
    color: var(--vm-text-primary);
}

.toggle-icon { transition: transform 0.15s ease; }
li.collapsed .toggle-icon { transform: rotate(0deg); }
li:not(.collapsed) .toggle-icon { transform: rotate(90deg); }

/* Node content */
.tree-node-icon { font-size: 14px; flex-shrink: 0; }
.tree-node-name { font-size: 13px; font-weight: 500; color: var(--vm-text-primary); }
.tree-node-class { font-size: 10px; padding: 2px 8px; border-radius: 4px; background: var(--vm-overlay-subtle); color: var(--vm-text-muted); font-weight: 400; }
.tree-node-count { font-size: 10px; padding: 1px 7px; border-radius: 4px; background: rgba(47,107,255,0.08); color: var(--vm-accent); font-weight: 600; }

/* ========== ERROR BOUNDARY ========== */
.error-boundary { text-align: center; padding: 60px 20px; max-width: 600px; margin: 60px auto; }
.error-boundary-icon { font-size: 48px; margin-bottom: 16px; }
.error-boundary h2 { font-size: 20px; font-weight: 600; color: var(--vm-danger); margin-bottom: 8px; }
.error-boundary p { font-size: 14px; color: var(--vm-text-secondary); margin-bottom: 16px; }
.error-boundary-detail { padding: 12px 16px; border-radius: 4px; background: rgba(192,86,86,0.06); border: 1px solid rgba(192,86,86,0.15); color: rgba(192,86,86,0.8); font-size: 12px; margin-bottom: 20px; white-space: pre-wrap; word-break: break-all; text-align: left; }

/* ========== LOADING ========== */
.loading-overlay { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 80px 20px; gap: 16px; }
.loading-spinner { width: 40px; height: 40px; border: 3px solid var(--vm-border); border-top-color: var(--vm-accent); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { font-size: 13px; color: var(--vm-text-muted); }

/* ========== SKELETON ========== */
.skeleton { background: linear-gradient(90deg, var(--vm-bg-hover) 25%, var(--vm-bg-active) 50%, var(--vm-bg-hover) 75%); background-size: 200% 100%; animation: shimmer 1.5s infinite; border-radius: 4px; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.skeleton-card { height: 160px; border-radius: 4px; }
.skeleton-text { height: 14px; width: 60%; margin-bottom: 8px; }
.skeleton-text-short { height: 14px; width: 35%; }

/* ========== FILTER / TABS BAR ========== */
.dashboard-toolbar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.dashboard-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--vm-border);
    margin-bottom: 20px;
}

.dashboard-tab {
    padding: 10px 24px;
    border: none;
    background: none;
    color: var(--vm-text-muted);
    font-size: 13px;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.1s;
}

.dashboard-tab:hover {
    color: var(--vm-text-primary);
}

.dashboard-tab.active {
    color: var(--vm-text-primary);
    border-bottom-color: var(--vm-accent);
}

.dashboard-tab .tab-count {
    font-size: 11px;
    padding: 1px 7px;
    border-radius: 4px;
    background: var(--vm-overlay-light);
    color: var(--vm-text-muted);
    margin-left: 6px;
    font-weight: 400;
}

.dashboard-tab.active .tab-count {
    background: rgba(47, 107, 255, 0.1);
    color: var(--vm-accent);
}

.search-input {
    flex: 1;
    min-width: 200px;
    max-width: 400px;
    padding: 8px 14px 8px 36px;
    border-radius: 4px;
    border: 1px solid var(--vm-border);
    background: var(--vm-bg-tertiary);
    color: var(--vm-text-primary);
    font-size: 13px;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: all 0.15s;
}

.search-input:focus {
    border-color: var(--vm-border-focus);
    box-shadow: 0 0 0 2px rgba(47, 107, 255, 0.1);
    background: var(--vm-bg-secondary);
}

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

.search-wrapper {
    position: relative;
    flex: 1;
    min-width: 200px;
    max-width: 400px;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--vm-text-muted);
    pointer-events: none;
}

.sort-select {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid var(--vm-border);
    background: var(--vm-bg-secondary);
    color: var(--vm-text-primary);
    font-size: 12px;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    outline: none;
}

.sort-select option {
    background: var(--vm-bg-secondary);
    color: var(--vm-text-primary);
}

.refresh-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--vm-bg-tertiary);
    border: 1px solid var(--vm-border);
    border-radius: 6px;
    color: var(--vm-text-muted);
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s;
}
.refresh-btn:hover { color: var(--vm-accent); border-color: var(--vm-accent); }
.refresh-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ========== SELECTION ========== */
.selection-info {
    font-size: 11px;
    color: var(--vm-warning);
    padding: 4px 10px;
    border-radius: 4px;
    background: rgba(198, 144, 38, 0.08);
    border: 1px solid rgba(198, 144, 38, 0.2);
    font-weight: 600;
    white-space: nowrap;
}

/* ========== IMPORT PANEL ========== */
.import-panel {
    background: var(--vm-bg-secondary);
    border: 1px solid var(--vm-border);
    border-radius: 4px;
    padding: 20px 24px;
    margin-bottom: 24px;
}

.import-header h3 { font-size: 15px; font-weight: 600; color: var(--vm-text-primary); margin: 0 0 4px 0; }
.import-desc { font-size: 12px; color: var(--vm-text-muted); margin: 0 0 14px 0; }
.import-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.import-file-btn { cursor: pointer; position: relative; }
.import-file-btn input[type="file"] { position: absolute; width: 0; height: 0; overflow: hidden; opacity: 0; }
.import-or { font-size: 12px; color: var(--vm-text-muted); }
.import-status { margin-top: 12px; font-size: 12px; color: var(--vm-info); }
.import-success { margin-top: 12px; font-size: 12px; color: var(--vm-success); padding: 8px 12px; background: rgba(76,149,108,0.06); border-radius: 4px; border: 1px solid rgba(76,149,108,0.15); }

.cascade-panel { background: rgba(60,145,179,0.04); border: 1px solid rgba(60,145,179,0.15); border-radius: 4px; padding: 16px 20px; margin-bottom: 16px; }
.cascade-panel h3 { font-size: 14px; font-weight: 600; color: var(--vm-ifthen-color); margin: 0 0 12px 0; }

.relations-list { display: flex; flex-direction: column; gap: 6px; }
.relation-item { display: flex; align-items: center; gap: 10px; padding: 8px 14px; border-radius: 4px; font-size: 13px; background: var(--vm-bg-tertiary); border: 1px solid var(--vm-border); }
.rel-source, .rel-target { color: var(--vm-text-primary); font-weight: 500; }
.rel-arrow { color: var(--vm-text-muted); font-size: 14px; }
.rel-badge { font-size: 10px; padding: 2px 8px; border-radius: 4px; font-weight: 600; text-transform: uppercase; }
.rel-ifthen-badge { background: rgba(60,145,179,0.1); color: var(--vm-ifthen-color); }
.rel-cascade { font-size: 11px; color: var(--vm-text-muted); }

/* ========== LANGUAGE SWITCHER ========== */
.language-switcher { position: relative; margin-right: 8px; }
.language-trigger {
    display: flex; align-items: center; gap: 6px; padding: 5px 10px;
    border-radius: 4px; border: 1px solid var(--vm-border); background: var(--vm-bg-secondary);
    color: var(--vm-text-secondary); font-size: 12px; font-family: 'Inter', sans-serif; cursor: pointer; transition: all 0.1s;
}
.language-trigger:hover { background: var(--vm-bg-hover); color: var(--vm-text-primary); }
.language-label { font-size: 11px; }

.language-dropdown {
    display: none; position: absolute; right: 0; min-width: 140px;
    background: var(--vm-bg-secondary); border-radius: 4px; box-shadow: 0 4px 16px var(--vm-shadow-color);
    border: 1px solid var(--vm-border); z-index: 1000; overflow: hidden; animation: menuFadeIn 0.15s ease;
}
.language-dropdown.drop-up { bottom: calc(100% + 6px); }
.language-dropdown.drop-down { top: calc(100% + 6px); }
.language-dropdown.open { display: block; }

.language-option {
    display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px;
    border: none; background: none; color: var(--vm-text-secondary); font-size: 13px;
    font-family: 'Inter', sans-serif; cursor: pointer; transition: background 0.1s; text-align: left;
}
.language-option:hover { background: var(--vm-bg-hover); }
.language-option.active { color: var(--vm-accent); background: rgba(47, 107, 255, 0.06); }

/* ========== CURRENCY SWITCHER ========== */
.currency-switcher { position: relative; margin-right: 8px; }
.currency-trigger {
    display: flex; align-items: center; gap: 6px; padding: 5px 10px;
    border-radius: 4px; border: 1px solid var(--vm-border); background: var(--vm-bg-secondary);
    color: var(--vm-text-secondary); font-size: 12px; font-family: 'Inter', sans-serif; cursor: pointer; transition: all 0.1s;
}
.currency-trigger:hover { background: var(--vm-bg-hover); color: var(--vm-text-primary); }
.currency-symbol { font-size: 14px; font-weight: 600; }
.currency-label { font-size: 11px; }

.currency-dropdown {
    display: none; position: absolute; right: 0; min-width: 150px;
    background: var(--vm-bg-secondary); border-radius: 4px; box-shadow: 0 4px 16px var(--vm-shadow-color);
    border: 1px solid var(--vm-border); z-index: 1000; overflow: hidden; animation: menuFadeIn 0.15s ease;
}
.currency-dropdown.drop-up { bottom: calc(100% + 6px); }
.currency-dropdown.drop-down { top: calc(100% + 6px); }
.currency-dropdown.open { display: block; }

.currency-option {
    display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px;
    border: none; background: none; color: var(--vm-text-secondary); font-size: 13px;
    font-family: 'Inter', sans-serif; cursor: pointer; transition: background 0.1s; text-align: left;
}
.currency-option:hover { background: var(--vm-bg-hover); }
.currency-option.active { color: var(--vm-accent); background: rgba(47, 107, 255, 0.06); }

/* ========== THEME SWITCHER ========== */
.theme-switcher { position: relative; margin-right: 8px; }
.theme-trigger {
    display: flex; align-items: center; gap: 6px; padding: 5px 10px;
    border-radius: 4px; border: 1px solid var(--vm-border); background: var(--vm-bg-secondary);
    color: var(--vm-text-secondary); font-size: 12px; font-family: 'Inter', sans-serif; cursor: pointer; transition: all 0.1s;
}
.theme-trigger:hover { background: var(--vm-bg-hover); color: var(--vm-text-primary); }
.theme-icon { font-size: 14px; }
.theme-label { font-size: 11px; }

.theme-dropdown {
    display: none; position: absolute; right: 0; min-width: 140px;
    background: var(--vm-bg-secondary); border-radius: 4px; box-shadow: 0 4px 16px var(--vm-shadow-color);
    border: 1px solid var(--vm-border); z-index: 1000; overflow: hidden; animation: menuFadeIn 0.15s ease;
}
.theme-dropdown.drop-up { bottom: calc(100% + 6px); }
.theme-dropdown.drop-down { top: calc(100% + 6px); }
.theme-dropdown.open { display: block; }

.theme-option {
    display: flex; align-items: center; gap: 8px; width: 100%; padding: 10px 14px;
    border: none; background: none; color: var(--vm-text-secondary); font-size: 13px;
    font-family: 'Inter', sans-serif; cursor: pointer; transition: background 0.1s; text-align: left;
}
.theme-option:hover { background: var(--vm-bg-hover); }
.theme-option.active { color: var(--vm-accent); background: rgba(47, 107, 255, 0.06); }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .app-content { padding: 16px; }
    .project-grid { grid-template-columns: 1fr; }
    .app-navbar { padding: 0 16px; }
    .app-footer { flex-direction: column; gap: 8px; text-align: center; padding: 16px; }
}

/* ========== DIAGRAM CONTEXT MENU ========== */
.diagram-context-menu {
    background: var(--vm-bg-secondary);
    border: 1px solid var(--vm-border);
    border-radius: 4px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    min-width: 200px;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
    animation: menuFadeIn 0.12s ease;
}

.diagram-context-menu-header { padding: 10px 14px; font-size: 11px; font-weight: 600; color: var(--vm-text-muted); border-bottom: 1px solid var(--vm-border-light); text-transform: uppercase; letter-spacing: 0.3px; }
.diagram-context-menu-item { padding: 10px 14px; font-size: 13px; color: var(--vm-text-primary); cursor: pointer; display: flex; align-items: center; gap: 8px; transition: background 0.1s; }
.diagram-context-menu-item:hover { background: var(--vm-bg-hover); }
.diagram-context-menu-item.danger { color: var(--vm-danger); }
.diagram-context-menu-item.danger:hover { background: rgba(192, 86, 86, 0.06); }
.diagram-context-menu-item .ctx-swatch { display: inline-block; width: 10px; height: 10px; border-radius: 3px; flex-shrink: 0; }

/* ========== PROJECT PAGE: TWO-PANEL LAYOUT ========== */
.project-layout { max-width: 100% !important; padding: 0 !important; }

.project-topbar {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 28px; background: var(--vm-bg-secondary); border-bottom: 1px solid var(--vm-border); gap: 24px;
}
.project-topbar-left { display: flex; align-items: center; gap: 16px; min-width: 0; }
.project-topbar-left .back-link { margin: 0; flex-shrink: 0; }
.project-title { font-size: 18px; font-weight: 700; color: var(--vm-text-primary); margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.project-meta { display: flex; gap: 8px; flex-shrink: 0; }
.meta-pill { font-size: 11px; padding: 3px 10px; border-radius: 4px; background: var(--vm-overlay-subtle); color: var(--vm-text-muted); white-space: nowrap; }

.project-topbar-stats { display: flex; gap: 8px; flex-shrink: 0; }
.stat-chip { display: flex; flex-direction: column; align-items: center; padding: 8px 18px; border-radius: 4px; background: var(--vm-bg-tertiary); border: 1px solid var(--vm-border); min-width: 90px; }
.stat-chip-value { font-size: 20px; font-weight: 700; line-height: 1.1; }
.stat-chip-label { font-size: 9px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--vm-text-muted); margin-top: 2px; }
.stat-blue .stat-chip-value { color: var(--vm-accent); }
.stat-green .stat-chip-value { color: var(--vm-success); }
.stat-red .stat-chip-value { color: var(--vm-danger); }

/* ===== SPLIT LAYOUT ===== */
.project-split { display: flex; flex: 1; min-height: 0; height: calc(100vh - 56px - 68px); }
.project-main { flex: 1; min-width: 0; display: flex; flex-direction: column; overflow: hidden; }
.project-main .view-tabs { margin: 0; padding: 0 20px; background: var(--vm-bg-secondary); border-bottom: 1px solid var(--vm-border); flex-shrink: 0; }
.project-main .view-tab { display: inline-flex; align-items: center; gap: 6px; }
.project-main .view-panel { flex: 1; overflow: auto; }
.project-main .tree-container { border: none; border-radius: 0; height: 100%; display: flex; flex-direction: column; }
.project-main .tree-scroll { flex: 1; overflow: auto; }
.project-main .diagram-container { border: none; border-radius: 0; height: 100%; display: flex; flex-direction: column; }
.project-main #treeDiagram { flex: 1; }

/* ===== SIDEBAR ===== */
.project-sidebar {
    width: 320px; flex-shrink: 0; border-left: 1px solid var(--vm-border);
    background: var(--vm-bg-tertiary); overflow-y: auto; padding: 16px;
    display: flex; flex-direction: column; gap: 12px;
}
.sidebar-card { background: var(--vm-bg-secondary); border: 1px solid var(--vm-border); border-radius: 4px; padding: 14px; }
.sidebar-card-title { display: flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 600; color: var(--vm-text-primary); text-transform: uppercase; letter-spacing: 0.5px; margin: 0 0 10px; }
.sidebar-badge { background: var(--vm-overlay-light); color: var(--vm-text-muted); font-size: 10px; font-weight: 500; padding: 2px 8px; border-radius: 4px; margin-left: auto; }
.sidebar-legend { display: flex; gap: 12px; font-size: 11px; color: var(--vm-text-muted); }
.legend-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 4px; vertical-align: middle; }
.legend-dot + .legend-dot { margin-left: 8px; }
.tree-legend-inline { display: flex; align-items: center; gap: 4px; font-size: 11px; color: var(--vm-text-muted); margin-left: auto; }

.sidebar-details { margin-top: 8px; }
.sidebar-details summary { cursor: pointer; font-size: 12px; color: var(--vm-text-secondary); padding: 6px 8px; border-radius: 3px; transition: background 0.1s; }
.sidebar-details summary:hover { background: var(--vm-bg-hover); }
.sidebar-tree { max-height: 300px; overflow: auto; padding: 8px !important; }
.sidebar-rules-list { display: flex; flex-direction: column; gap: 4px; }
.sidebar-rule { display: flex; align-items: center; gap: 6px; font-size: 11px; padding: 5px 8px; border-radius: 3px; background: var(--vm-bg-tertiary); }
.rule-source { color: var(--vm-text-primary); font-weight: 500; }
.rule-arrow { color: var(--vm-ifthen-color); font-size: 13px; }
.rule-target { color: var(--vm-text-secondary); }

/* ===== IMPORT (collapsible) ===== */
.import-details { border-bottom: 1px solid var(--vm-border-light); }
.import-summary { display: flex; align-items: center; gap: 8px; padding: 10px 20px; font-size: 12px; font-weight: 500; color: var(--vm-text-muted); cursor: pointer; transition: background 0.1s; list-style: none; }
.import-summary::-webkit-details-marker { display: none; }
.import-summary::before { content: '\25B6'; font-size: 10px; transition: transform 0.15s; }
.import-details[open] .import-summary::before { transform: rotate(90deg); }
.import-summary:hover { background: var(--vm-bg-hover); color: var(--vm-text-primary); }
.import-body { padding: 12px 20px 16px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .project-split { flex-direction: column; height: auto; }
    .project-sidebar { width: 100%; border-left: none; border-top: 1px solid var(--vm-border); max-height: 400px; }
    .project-topbar { flex-direction: column; align-items: flex-start; }
}

/* ========== CONFIGURATION TABLE ========== */
.config-empty { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; padding: 60px 20px; color: var(--vm-text-muted); font-size: 14px; }
.config-warning { padding: 20px; text-align: center; color: var(--vm-warning); font-size: 13px; background: rgba(198,144,38,0.06); border: 1px solid rgba(198,144,38,0.15); border-radius: 4px; margin: 20px; }
.config-toolbar { display: flex; align-items: center; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--vm-border-light); }
.config-count { font-size: 13px; font-weight: 600; color: var(--vm-text-primary); }
.config-stats { font-size: 11px; color: var(--vm-text-muted); margin-left: 8px; }

.sales-input-group { display: flex; align-items: center; gap: 8px; margin: 12px 0; }
.sales-input-group label { font-size: 12px; color: var(--vm-text-secondary); }
.sales-input { background: var(--vm-bg-input); border: 1px solid var(--vm-border); border-radius: 3px; padding: 6px 10px; color: var(--vm-text-primary); font-size: 13px; width: 120px; }

.config-table-scroll { overflow: auto; flex: 1; }
.config-table { width: 100%; border-collapse: collapse; font-size: 12px; white-space: nowrap; }
.config-th { position: sticky; top: 0; z-index: 2; background: var(--vm-bg-hover); padding: 10px 14px; text-align: left; font-weight: 600; color: var(--vm-text-primary); border-bottom: 2px solid var(--vm-border); }
.config-th-name { display: block; font-size: 12px; }
.config-th-type { display: block; font-size: 9px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; margin-top: 2px; }
.th-variant .config-th-type { color: var(--vm-variant-color); }
.th-option .config-th-type {
    color: var(--vm-option-color);
}
.th-default .config-th-type {
    color: var(--vm-default-color);
}
.config-td { padding: 8px 14px; border-bottom: 1px solid var(--vm-border-light); color: var(--vm-text-primary); }
.config-idx { color: var(--vm-text-muted); font-weight: 500; width: 40px; }
.config-empty-cell { color: var(--vm-text-disabled); }
.config-table tbody tr:hover { background: var(--vm-bg-hover); }
.config-table tbody tr:nth-child(even) { background: var(--vm-bg-tertiary); }

.tab-badge { font-size: 10px; font-weight: 600; background: var(--vm-overlay-light); color: var(--vm-text-muted); padding: 1px 7px; border-radius: 4px; margin-left: 4px; }
.tab-badge-warn { background: rgba(198,144,38,0.1); color: var(--vm-warning); }
.cost-card-warn { border-color: rgba(198,144,38,0.3); }
.flag-badge { display: inline-block; font-size: 10px; font-weight: 600; padding: 2px 8px; border-radius: 3px; background: rgba(198,144,38,0.1); color: var(--vm-warning); }
.flag-row.flag-unprofitable .flag-badge { background: rgba(192,86,86,0.08); color: var(--vm-danger); }
.flag-row.flag-unused .flag-badge { background: rgba(113,128,150,0.08); color: var(--vm-default-color); }
.flag-row.flag-high-cost .flag-badge { background: rgba(192,86,86,0.08); color: var(--vm-danger); }

.priority-high { background: rgba(192,86,86,0.08); color: var(--vm-danger); }
.priority-medium { background: rgba(198,144,38,0.08); color: var(--vm-warning); }
.priority-low { background: rgba(76,149,108,0.08); color: var(--vm-success); }

.kpi-bar { height: 8px; background: var(--vm-accent); border-radius: 4px; min-width: 2px; max-width: 100%; }

/* ========== COST ANALYSIS ========== */
.cost-toolbar { display: flex; align-items: center; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--vm-border-light); }
.cost-summary { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; padding: 16px 20px; border-bottom: 1px solid var(--vm-border-light); }
.cost-card { display: flex; flex-direction: column; align-items: center; padding: 14px; background: var(--vm-bg-tertiary); border: 1px solid var(--vm-border); border-radius: 4px; }
.cost-card-value { font-size: 20px; font-weight: 700; color: var(--vm-text-primary); }
.cost-card-label { font-size: 10px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--vm-text-muted); margin-top: 3px; }
.cost-section-title { font-size: 13px; font-weight: 600; color: var(--vm-text-primary); text-transform: uppercase; letter-spacing: 0.5px; padding: 12px 20px 8px; margin: 0; }
.cost-total { font-weight: 600; color: var(--vm-text-primary); }

/* Project group headers for category grouping */
.project-group-header {
    font-size: 1rem;
    font-weight: 600;
    color: var(--vm-text-primary);
    margin: 1.5rem 0 0.75rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--vm-border);
}

.project-group-header:first-child {
    margin-top: 0;
}