@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Crimson+Text:ital,wght@0,400;0,600;0,700;1,400&display=swap');

*, *::before, *::after {
    box-sizing: border-box;
    border-width: 0;
    border-style: solid;
    border-color: rgb(var(--color-border));
}

:root {
    /* Enhanced spacing system matching Writer */
    --gap: 24px;
    --radius: 8px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Writer-inspired color system */
    --color-bg: 255 255 255;
    --color-bg-secondary: 249 249 249;
    --color-text: 0 0 0;
    --color-text-secondary: 75 85 99;
    --color-text-muted: 107 114 128;
    --color-border: 229 229 229;
    --color-hover: 247 247 247;
    
    /* Accent system matching Writer */
    --color-accent: 16 163 127;
    --color-accent-foreground: 255 255 255;
    --color-accent-muted: 16 163 127;
    
    /* Enhanced semantic colors */
    --color-primary: var(--color-text);
    --color-primary-foreground: var(--color-bg);
    --color-secondary: var(--color-text-secondary);
    --color-muted: var(--color-text-muted);
    --color-destructive: 239 68 68;
    --color-destructive-foreground: 255 255 255;
    
    /* Legacy mappings for compatibility */
    --theme: rgb(var(--color-bg));
    --entry: rgb(var(--color-bg-secondary));
    --primary: rgb(var(--color-text));
    --secondary: rgb(var(--color-text-secondary));
    --border: rgb(var(--color-border));
    --topbar-bg: rgba(var(--color-bg) / 0.8);
    
    /* Enhanced accent colors */
    --cyberpunk-teal: rgb(var(--color-accent));
    --cyberpunk-teal-dark: rgb(19 201 137);
    --cyberpunk-teal-light: rgb(var(--color-accent) / 0.1);
    
    /* Port colors updated for cyberpunk theme */
    --port-input-color: var(--cyberpunk-teal);
    --port-output-color: #3b82f6;
    --port-border-color: rgb(var(--color-bg-secondary));
    --connection-line-color: #3b82f6;
    --connection-line-highlight: var(--cyberpunk-teal);
    
    /* Typography */
    --font-system: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body.dark {
    /* Enhanced cyberpunk dark theme matching Writer */
    --color-bg: 33 33 33;
    --color-bg-secondary: 44 44 44;
    --color-text: 255 255 255;
    --color-text-secondary: 209 213 219;
    --color-text-muted: 156 163 175;
    --color-border: 68 68 68;
    --color-hover: 55 55 55;
    
    /* Enhanced semantic colors for dark */
    --color-primary: var(--color-text);
    --color-primary-foreground: var(--color-bg);
    --color-secondary: var(--color-text-secondary);
    --color-muted: var(--color-text-muted);
    --color-accent-foreground: var(--color-bg);
    
    /* Legacy mappings */
    --theme: rgb(var(--color-bg));
    --entry: rgb(var(--color-bg-secondary));
    --primary: rgb(var(--color-text));
    --secondary: rgb(var(--color-text-secondary));
    --border: rgb(var(--color-border));
    --topbar-bg: rgba(var(--color-bg-secondary) / 0.8);
    --port-border-color: rgb(var(--color-bg-secondary));
}

body.sepia {
    /* Reading-optimized sepia theme matching Writer */
    --color-bg: 251 248 241;
    --color-bg-secondary: 247 243 234;
    --color-text: 62 51 41;
    --color-text-secondary: 92 77 61;
    --color-text-muted: 122 102 82;
    --color-border: 226 218 203;
    --color-hover: 241 235 223;
    
    /* Enhanced semantic colors for sepia */
    --color-primary: var(--color-text);
    --color-primary-foreground: var(--color-bg);
    --color-secondary: var(--color-text-secondary);
    --color-muted: var(--color-text-muted);
    --color-accent-foreground: var(--color-bg);
    
    /* Legacy mappings */
    --theme: rgb(var(--color-bg));
    --entry: rgb(var(--color-bg-secondary));
    --primary: rgb(var(--color-text));
    --secondary: rgb(var(--color-text-secondary));
    --border: rgb(var(--color-border));
    --topbar-bg: rgba(var(--color-bg) / 0.8);
    --port-border-color: rgb(var(--color-bg-secondary));
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-system);
    background: var(--theme);
    color: var(--primary);
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    width: 100vw;
}

/* Top bar */
.top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 48px;
    border-bottom: 1px solid var(--border);
    background: var(--topbar-bg);
    backdrop-filter: blur(8px);
    padding: 0 12px;
}

.app-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.app-title span:first-of-type {
    font-weight: 500;
}

.subtitle {
    color: var(--secondary);
}

.controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* Control groups and separators */
.control-group {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.control-group-primary {
    position: relative;
}

.control-separator {
    width: 1px;
    height: 1.5rem;
    background: rgb(var(--color-border));
    margin: 0 0.25rem;
}

/* Enhanced button spacing within groups */
.control-group .btn {
    border-radius: var(--radius-md);
}

.control-group .btn:first-child {
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
}

.control-group .btn:last-child {
    border-top-left-radius: var(--radius-sm);
    border-bottom-left-radius: var(--radius-sm);
}

.control-group .btn:not(:first-child):not(:last-child) {
    border-radius: var(--radius-sm);
}

.control-group .btn + .btn {
    margin-left: -1px;
}

@media (max-width: 768px) {
    :root {
        --gap: 16px;
    }
    
    .controls {
        gap: 8px;
    }
    
    .controls .btn {
        height: 2.25rem;
        padding: 0.5rem 0.75rem;
        font-size: 13px;
        min-width: 60px;
    }
    
    .controls .btn span {
        display: none;
    }
    
    
    .sidebar-toggle {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    :root {
        --gap: 12px;
    }
    
    .app-title .subtitle {
        display: none;
    }
    
    /* Better control spacing on mobile */
    .controls {
        gap: 6px;
        flex-wrap: wrap;
    }
    
    .controls .btn {
        height: 2.75rem;
        padding: 0.75rem 1rem;
        font-size: 14px;
        min-width: 70px;
    }
    
    
    .sidebar-toggle {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    /* Optimized sidebar for mobile */
    .people-palette {
        width: 200px;
        min-width: 200px;
        position: relative;
        z-index: 10;
    }
    
    .people-palette.collapsed {
        width: 32px;
    }
    
    .palette-content {
        padding: 8px;
        max-height: calc(100vh - 120px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    /* Make footer more readable on mobile */
    .footer {
        font-size: 12px;
        padding: 8px 12px;
        line-height: 1.4;
        text-align: center;
    }
    
    /* Better touch areas for mobile */
    .add-activity button {
        min-height: 40px;
        padding: 8px 16px;
        font-size: 14px;
    }
    
    .add-activity input {
        min-height: 40px;
        padding: 8px 12px;
        font-size: 14px;
    }
    
    /* Mobile-optimized controls */
    .controls .btn span {
        display: inline;
        font-size: 12px;
    }
    
    /* Mobile delete buttons always visible */
    .task-delete-btn,
    .person-delete-btn,
    .epic-delete-btn {
        opacity: 1;
        transform: scale(1.1);
    }
    
    /* Better canvas interaction on mobile */
    .canvas {
        touch-action: pan-x pan-y;
    }
    
    /* Improve dialog sizing on mobile */
    .dialog {
        min-width: calc(100vw - 40px);
        max-width: 400px;
        margin: 20px;
    }
    
    /* Better HUD positioning */
    .hud {
        bottom: 12px;
        right: 8px;
        left: 8px;
        text-align: center;
        background: rgba(255, 255, 255, 0.95);
    }
}

@media (max-width: 320px) {
    .people-palette {
        width: 200px;
        min-width: 200px;
        padding: 6px;
    }
    
    .people-palette .palette-title {
        font-size: 12px;
    }
    
    .person-card {
        padding: 6px;
        margin-bottom: 8px;
    }
    
    .add-activity input {
        height: 28px;
        font-size: 11px;
    }
    
    .add-activity button {
        height: 28px;
        font-size: 11px;
        padding: 0 8px;
    }
}

/* Enhanced button system inspired by shadcn/ui */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    white-space: nowrap;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-system);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    outline: none;
    cursor: pointer;
    position: relative;
    
    /* Default size */
    height: 2.25rem;
    padding: 0.5rem 1rem;
    min-width: 80px;
    
    /* Default variant - outline */
    background: rgb(var(--color-bg));
    color: rgb(var(--color-text));
    border: 1px solid rgb(var(--color-border));
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    
    /* Icon sizing */
    & [data-lucide] {
        width: 1rem;
        height: 1rem;
        flex-shrink: 0;
    }
}

.btn:hover:not(:disabled) {
    background: rgb(var(--color-hover));
    border-color: rgb(var(--color-text-secondary));
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1);
}

.btn:focus-visible {
    outline: 2px solid rgb(var(--color-accent));
    outline-offset: 2px;
    border-color: rgb(var(--color-accent));
    box-shadow: 0 0 0 3px rgb(var(--color-accent) / 0.2);
}

.btn:active:not(:disabled) {
    transform: scale(0.98);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
}

.btn:disabled {
    pointer-events: none;
    opacity: 0.5;
    cursor: not-allowed;
}

/* Button variants */
.btn-primary {
    background: rgb(var(--color-accent));
    color: rgb(var(--color-accent-foreground));
    border-color: rgb(var(--color-accent));
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.btn-primary:hover:not(:disabled) {
    background: rgb(19 201 137);
    border-color: rgb(19 201 137);
    box-shadow: 0 2px 4px 0 rgba(0, 0, 0, 0.1);
}

.btn-primary:focus-visible {
    box-shadow: 0 0 0 3px rgb(var(--color-accent) / 0.2);
}

.btn-secondary {
    background: rgb(var(--color-bg-secondary));
    color: rgb(var(--color-text-secondary));
    border-color: rgb(var(--color-border));
    height: 2rem;
    padding: 0.25rem 0.75rem;
    min-width: 60px;
    font-size: 0.8125rem;
}

.btn-secondary:hover:not(:disabled) {
    background: rgb(var(--color-hover));
    color: rgb(var(--color-text));
}

.btn-active {
    background: rgb(var(--color-accent));
    color: rgb(var(--color-accent-foreground));
    border-color: rgb(var(--color-accent));
}

.btn-active:hover:not(:disabled) {
    background: rgb(19 201 137);
    border-color: rgb(19 201 137);
}

.btn-danger {
    background: rgb(var(--color-destructive));
    color: rgb(var(--color-destructive-foreground));
    border-color: rgb(var(--color-destructive));
}

.btn-danger:hover:not(:disabled) {
    background: rgb(220 38 38);
    border-color: rgb(220 38 38);
    box-shadow: 0 2px 4px 0 rgba(239, 68, 68, 0.2);
}

.btn-danger:focus-visible {
    box-shadow: 0 0 0 3px rgb(var(--color-destructive) / 0.2);
}

/* Card Components (shadcn/ui inspired) */
.card {
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-xl);
    border: 1px solid rgb(var(--color-border));
    background: rgb(var(--color-bg));
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
}

.card-header {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    padding: 1.5rem;
    padding-bottom: 1rem;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1;
    color: rgb(var(--color-text));
    font-family: var(--font-system);
}

.card-description {
    font-size: 0.875rem;
    line-height: 1.25rem;
    color: rgb(var(--color-text-muted));
}

.card-content {
    padding: 0 1.5rem;
    padding-bottom: 1.5rem;
    flex: 1;
}

.card-footer {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid rgb(var(--color-border));
}

/* Empty State Card */
.empty-state-card {
    text-align: center;
    padding: 3rem 1.5rem;
}

.empty-state-icon {
    margin: 0 auto 1rem auto;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background: rgb(var(--color-bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
}

.empty-state-icon [data-lucide] {
    width: 1.5rem;
    height: 1.5rem;
    color: rgb(var(--color-text-muted));
}

.empty-state-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: rgb(var(--color-text));
    margin-bottom: 0.5rem;
}

.empty-state-description {
    font-size: 0.875rem;
    color: rgb(var(--color-text-muted));
    margin-bottom: 1.5rem;
    max-width: 28rem;
    margin-left: auto;
    margin-right: auto;
}

/* Enhanced transitions and micro-interactions */
.palette-content, .timeline-content {
    padding: 1rem;
}

.palette-content .card,
.timeline-content .card {
    margin-bottom: 1rem;
}

/* Performance optimized transitions for interactive elements */
.epic, .task, .north-star {
    /* GPU acceleration hints */
    will-change: transform;
    transform: translate3d(0, 0, 0); /* Force GPU layer */
    
    /* Optimized transitions - disable during drag */
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Disable transitions during drag for better performance */
.epic.dragging, .task.dragging, .north-star.dragging {
    transition: none !important;
    will-change: transform;
    pointer-events: none; /* Optimize hit testing during drag */
}

/* Performance-optimized hover states */
.epic:hover:not(.dragging), .task:hover:not(.dragging), .north-star:hover:not(.dragging) {
    transform: translate3d(0, -2px, 0);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

/* Global performance optimizations */
.performance-mode {
    pointer-events: none;
}

.performance-mode * {
    pointer-events: none;
}

/* Enhanced sidebar transitions */
.people-palette, .timeline-sidebar {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Improved focus states */
*:focus-visible {
    outline: 2px solid rgb(var(--color-accent));
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Enhanced app title */
.app-title {
    transition: color 0.2s ease;
}

.app-title:hover {
    color: rgb(var(--color-accent));
}

/* Smooth control separator animations */
.control-separator {
    transition: background-color 0.2s ease, opacity 0.2s ease;
}

/* Enhanced palette tips styling */
.palette-tip {
    font-size: 0.8125rem;
    color: rgb(var(--color-text-muted));
    background: rgb(var(--color-bg-secondary));
    border-radius: var(--radius-md);
    padding: 0.75rem;
    margin-top: 1rem;
    border: 1px solid rgb(var(--color-border));
    line-height: 1.4;
}

/* Loading states */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Enhanced empty state animations */
.empty-state {
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translate(-50%, -45%); }
    to { opacity: 1; transform: translate(-50%, -50%); }
}

.details-actions {
    display: flex;
    gap: 12px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 20px;
}

/* Auto-align button states */
#auto-align.btn-active {
    background: #8b5cf6;
    color: white;
    border-color: #8b5cf6;
}

#auto-align.btn-active:hover {
    background: #7c3aed;
}

/* Auto-alignment animation classes */
.task.auto-aligning {
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
}

.task.auto-aligned {
    animation: auto-align-success 0.6s ease-out;
}

@keyframes auto-align-success {
    0% { 
        transform: scale(1); 
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    50% { 
        transform: scale(1.05); 
        box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
    }
    100% { 
        transform: scale(1); 
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
}

/* Auto-align message styles */
.auto-align-message {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: #1f2937;
    color: white;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    border: 1px solid #374151;
    display: none;
    max-width: 400px;
    text-align: center;
    animation: message-appear 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.auto-align-message.success {
    background: #10b981;
    border-color: #059669;
}

.auto-align-message.error {
    background: #ef4444;
    border-color: #dc2626;
}

.auto-align-message.info {
    background: #3b82f6;
    border-color: #2563eb;
}

@keyframes message-appear {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px);
    }
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

@media (max-width: 768px) {
    .auto-align-message {
        top: 60px; /* Account for mobile top bar height */
        left: 16px;
        right: 16px;
        max-width: none;
        transform: none;
        font-size: 13px;
        padding: 10px 16px;
    }
    
    @keyframes message-appear {
        0% {
            opacity: 0;
            transform: translateY(-20px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

/* Main content */
.main-content {
    display: flex;
    flex: 1;
    height: calc(100vh - 48px - 40px);
}

/* People palette */
.people-palette {
    width: 320px;
    flex-shrink: 0;
    border-right: 1px solid var(--border);
    background: rgba(var(--color-bg-secondary) / 0.8);
    backdrop-filter: blur(12px);
    overflow-y: auto;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: inset -1px 0 0 rgba(var(--color-border) / 0.5);
}

.palette-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid rgba(var(--color-border) / 0.5);
    background: rgba(var(--color-bg) / 0.9);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
    transition: all 0.3s ease;
}

.palette-content {
    padding: 12px;
}

.sidebar-toggle {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--entry);
    color: var(--secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 16px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    z-index: 10;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.sidebar-toggle:hover {
    background: var(--cyberpunk-teal-light);
    color: var(--cyberpunk-teal);
    border-color: var(--cyberpunk-teal);
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
    transform: scale(1.05);
}

.sidebar-toggle:focus-visible {
    outline: 2px solid var(--cyberpunk-teal);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgb(16 163 127 / 0.1);
}

.sidebar-toggle:active {
    transform: scale(0.98);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

/* Animated icon for toggle state */
.sidebar-toggle i {
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: center;
    pointer-events: none;
    width: 16px;
    height: 16px;
}

.people-palette.collapsed {
    width: 48px !important;
    min-width: 48px !important;
    box-shadow: 
        2px 0 8px rgba(var(--color-border) / 0.3),
        inset -1px 0 0 rgba(var(--color-border) / 0.5);
}

.people-palette.collapsed .palette-header {
    padding: 8px 4px;
    justify-content: center;
}

.people-palette.collapsed .palette-content {
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    opacity: 1;
    animation: fadeInUp 0.3s ease-out 0.2s both;
}

.people-palette.collapsed .palette-title {
    display: none;
}

/* Fade in animation for collapsed state */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Enhanced panel transition states */
.people-palette:not(.collapsed) .palette-content {
    animation: slideInLeft 0.4s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Timeline sidebar */
.timeline-sidebar {
    width: 280px;
    flex-shrink: 0;
    border-left: 1px solid var(--border);
    background: rgba(var(--color-bg-secondary) / 0.8);
    backdrop-filter: blur(12px);
    overflow-y: auto;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: inset 1px 0 0 rgba(var(--color-border) / 0.5);
}

.timeline-sidebar.collapsed {
    width: 48px !important;
    min-width: 48px !important;
    box-shadow: 
        -2px 0 8px rgba(var(--color-border) / 0.3),
        inset 1px 0 0 rgba(var(--color-border) / 0.5);
}

.timeline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid rgba(var(--color-border) / 0.5);
    background: rgba(var(--color-bg) / 0.9);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
    transition: all 0.3s ease;
}

.timeline-sidebar.collapsed .timeline-header {
    padding: 8px 4px;
    justify-content: center;
}

.timeline-content {
    padding: 16px;
    transition: all 0.3s ease;
}

.timeline-sidebar.collapsed .timeline-content {
    padding: 8px 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 1;
    animation: fadeInUp 0.3s ease-out 0.2s both;
}

/* Enhanced timeline animations */
.timeline-sidebar:not(.collapsed) .timeline-content {
    animation: slideInRight 0.4s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-item {
    margin-bottom: 8px;
    font-size: 13px;
}

.timeline-item .timeline-type {
    font-weight: 600;
    margin-right: 4px;
}

.timeline-item .timeline-date {
    font-size: 12px;
    color: var(--secondary);
    display: block;
}

.timeline-empty {
    font-size: 13px;
    color: var(--secondary);
}

.timeline-sidebar.collapsed .timeline-title,
.timeline-sidebar.collapsed .timeline-content {
    display: none;
}


.people-palette.collapsed .sidebar-toggle i {
    color: var(--cyberpunk-teal);
}

.timeline-sidebar.collapsed .sidebar-toggle i {
    color: var(--cyberpunk-teal);
}

.people-palette.collapsed .people-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    align-items: center;
    width: 100%;
}

.people-palette.collapsed .person-card {
    width: 36px;
    height: 36px;
    padding: 0;
    margin-bottom: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: visible;
    background: var(--entry);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all 0.2s ease;
}

.people-palette.collapsed .person-card:hover {
    transform: scale(1.1);
    border-color: #3b82f6;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.people-palette.collapsed .person-header {
    padding: 0;
    border: none;
    background: none;
    margin-bottom: 0;
    width: 100%;
    height: 100%;
    min-height: auto;
    justify-content: center;
}

.people-palette.collapsed .person-name {
    display: none;
}

.people-palette.collapsed .activity-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #3b82f6;
    color: var(--entry);
    font-size: 10px;
    font-weight: 600;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--entry);
    z-index: 10;
}

.people-palette.collapsed .activities-list,
.people-palette.collapsed .add-activity,
.people-palette.collapsed .palette-tip,
.people-palette.collapsed .person-delete-btn {
    display: none;
}

/* Tooltip for collapsed person cards */
.people-palette.collapsed .person-card::before {
    content: attr(data-person-name);
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
    background: #1f2937;
    color: var(--entry);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    var(--entry)-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
    z-index: 1000;
    margin-left: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    border: 1px solid #374151;
}

.people-palette.collapsed .person-card::after {
    content: '';
    position: absolute;
    left: calc(100% + 2px);
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 6px 8px 6px 0;
    border-color: transparent #1f2937 transparent transparent;
    opacity: 0;
    pointer-events: none;
    transition: all 0.2s ease;
    z-index: 1001;
}

.people-palette.collapsed .person-card:hover::before,
.people-palette.collapsed .person-card:hover::after {
    opacity: 1;
}

/* Mobile tooltip adjustments */
@media (max-width: 768px) {
    .people-palette.collapsed .person-card::before {
        font-size: 14px;
        padding: 10px 14px;
        margin-left: 12px;
        border-radius: 8px;
    }
    
    .people-palette.collapsed .person-card::after {
        border-width: 7px 9px 7px 0;
        left: calc(100% + 3px);
    }
}

/* Touch devices - show tooltip on tap/touch */
@media (pointer: coarse) {
    .people-palette.collapsed .person-card:active::before,
    .people-palette.collapsed .person-card:active::after,
    .people-palette.collapsed .person-card.show-tooltip::before,
    .people-palette.collapsed .person-card.show-tooltip::after {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .people-palette {
        width: 280px;
        min-width: 280px;
    }
    
    .people-palette.collapsed {
        width: 40px;
    }
}

@media (max-width: 640px) {
    .people-palette {
        width: 200px;
        min-width: 200px;
    }
    
    .people-palette.collapsed {
        width: 32px;
    }
    
    .palette-content {
        padding: 8px;
    }
    
    /* Better touch targets for mobile */
    .btn {
        min-height: 40px;
        padding: 8px 12px;
    }
    
    .remove-btn {
        min-width: 32px;
        min-height: 32px;
    }
    
    .sidebar-toggle {
        width: 32px;
        height: 32px;
    }
    
    .person-delete-btn,
    .task-delete-btn,
    .epic-delete-btn {
        width: 28px;
        height: 28px;
        opacity: 1; /* Always visible on mobile */
    }
}

.palette-title {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
}

.people-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.person-card {
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--entry);
    padding: 8px;
}

.person-header {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 8px;
    font-size: 14px;
    cursor: grab;
    margin-bottom: 8px;
}

.person-header:active {
    cursor: grabbing;
}

.person-name {
    font-weight: 500;
}

.activity-count {
    background: var(--entry);
    color: var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
    margin-left: auto;
}

.person-delete-btn {
    width: 20px;
    height: 20px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    margin-left: 8px;
}

.person-card:hover .person-delete-btn {
    opacity: 1;
}

.person-delete-btn:hover {
    background: #ef4444;
    color: var(--entry);
}

.activities-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.activity {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--entry);
    padding: 4px 8px;
    font-size: 12px;
    cursor: grab;
    flex: 1;
}

.activity:active {
    cursor: grabbing;
}

.activity-text {
    overflow: hidden;
    text-overflow: ellipsis;
    var(--entry)-space: nowrap;
}

.remove-btn {
    padding: 4px;
    border: none;
    background: none;
    color: var(--secondary);
    cursor: pointer;
    border-radius: 4px;
}

.remove-btn:hover {
    color: #dc2626;
    background: #fef2f2;
}

.add-activity {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 8px;
}

.add-activity input {
    flex: 1;
    height: 2.5rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font-system);
    background: var(--theme);
    color: var(--primary);
    transition: all 0.2s ease;
    line-height: 1.25;
}

.add-activity input:focus {
    outline: none;
    border-color: var(--cyberpunk-teal);
    box-shadow: 0 0 0 3px rgb(16 163 127 / 0.1);
}

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

.add-activity button {
    height: 2.5rem;
    padding: 0.625rem 1rem;
    font-size: 14px;
    font-weight: 500;
    min-width: 80px;
}

.palette-tip {
    margin-top: 16px;
    font-size: 12px;
    color: var(--secondary);
    line-height: 1.4;
}

/* Canvas */
.canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.canvas {
    position: relative;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(to right, rgba(0,0,0,.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0,0,0,.04) 1px, transparent 1px);
    background-size: 20px 20px;
}

.world {
    position: absolute;
    left: 0;
    top: 0;
    transform-origin: top left;
    /* Performance optimizations for world transforms */
    will-change: transform;
    transform: translate3d(0, 0, 0) scale(1); /* Force GPU layer with initial transform */
    backface-visibility: hidden; /* Optimize for 3D transforms */
}

.connections {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    /* SVG performance optimizations */
    will-change: transform;
    transform: translate3d(0, 0, 0); /* Force GPU layer for SVG */
    shape-rendering: optimizeSpeed; /* Optimize SVG rendering */
}

/* North Star */
.north-star {
    position: absolute;
    border: 3px solid rgba(251, 191, 36, 0.9);
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.15) 0%, rgba(251, 191, 36, 0.05) 100%);
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.2);
    user-select: none;
    z-index: 1; /* Behind epics but above canvas */
}

@media (max-width: 640px) {
    .north-star {
        border-radius: 16px;
        min-width: 320px;
        min-height: 120px;
    }
}

@media (max-width: 480px) {
    .north-star {
        border-radius: 12px;
        min-width: 280px;
        min-height: 100px;
    }
}

.north-star-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 16px;
    cursor: grab;
    border-bottom: 1px solid rgba(251, 191, 36, 0.2);
}

.north-star-header:active {
    cursor: grabbing;
}

.north-star-info {
    flex: 1;
}

.north-star-title {
    font-weight: 700;
    font-size: 16px;
    color: #b45309;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
}

.north-star-metrics {
    display: flex;
    gap: 8px;
    font-size: 11px;
}

.north-star-delete-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
}

.north-star:hover .north-star-delete-btn {
    opacity: 1;
}

.north-star-delete-btn:hover {
    background: #ef4444;
    color: white;
    transform: scale(1.05);
}

.north-star-content {
    position: relative;
    padding: 16px 20px;
    min-height: 60px;
    user-select: text;
}

.north-star-objective {
    font-size: 13px;
    color: var(--secondary);
    line-height: 1.4;
    font-style: italic;
    opacity: 0.8;
}

/* Priority badges for North Stars */
.badge.priority-critical {
    background: #dc2626;
    color: white;
}

.badge.priority-high {
    background: #ea580c;
    color: white;
}

.badge.priority-medium {
    background: #2563eb;
    color: white;
}

.badge.priority-low {
    background: #16a34a;
    color: white;
}

/* Status badges for North Stars */
.badge.status-active {
    background: #16a34a;
    color: white;
}

.badge.status-achieved {
    background: #6366f1;
    color: white;
}

.badge.status-paused {
    background: #d97706;
    color: white;
}

.badge.status-cancelled {
    background: #6b7280;
    color: white;
}

/* Epic */
.epic {
    position: absolute;
    border: 2px solid rgba(99, 102, 241, 0.8);
    border-radius: 16px;
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    user-select: none;
    z-index: 2;
}

@media (max-width: 640px) {
    .epic {
        border-radius: 12px;
        min-width: 280px;
        min-height: 200px;
    }
}

@media (max-width: 480px) {
    .epic {
        border-radius: 8px;
        min-width: 240px;
        min-height: 180px;
    }
}

.epic-header {
    display: flex;
    align-items: center;
    gap: 8px;
    height: 56px;
    padding: 0 12px;
    cursor: grab;
}

.epic-header:active {
    cursor: grabbing;
}

.epic-title {
    font-weight: 600;
    color: #3730a3;
    overflow: hidden;
    text-overflow: ellipsis;
    var(--entry)-space: nowrap;
    flex: 1;
}

.epic-badges {
    display: flex;
    gap: 8px;
    font-size: 12px;
}

.epic-delete-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    margin-left: 8px;
}

.epic:hover .epic-delete-btn {
    opacity: 1;
}

.epic-delete-btn:hover {
    background: #ef4444;
    color: var(--entry);
}

.epic-add-task-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    margin-left: 8px;
}
.epic:hover .epic-add-task-btn {
    opacity: 1;
}
.epic-add-task-btn:hover {
    background: #3b82f6;
    color: var(--entry);
}

.epic-done-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    margin-left: 8px;
}

.epic:hover .epic-done-btn {
    opacity: 1;
}

.epic-done-btn:hover {
    background: #10b981;
    color: var(--entry);
}

.epic.done {
    opacity: 0.7;
}

.epic.done .epic-title {
    text-decoration: line-through;
}

.badge {
    background: var(--entry);
    color: var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 12px;
}

.epic-content {
    position: relative;
    padding: 12px 16px;
    border-radius: 12px;
    border: 1px dashed rgba(99, 102, 241, 0.3);
    margin: 16px;
    user-select: text;
}

.resize-handle {
    position: absolute;
    right: 6px;
    bottom: 6px;
    width: 12px;
    height: 12px;
    background: rgba(99, 102, 241, 0.6);
    border-radius: 2px;
    cursor: nwse-resize;
}

.selected {
    outline: 2px dashed #3b82f6;
}

/* Task */
.task {
    position: absolute;
    width: 260px;
    height: 96px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--entry);
    padding: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    cursor: grab;
    user-select: none;
    z-index: 3;
}

.task-delete-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
}

.task:hover .task-delete-btn {
    opacity: 1;
}

.task-delete-btn:hover {
    background: #ef4444;
    color: var(--entry);
}

.task-done-btn {
    position: absolute;
    top: 8px;
    right: 36px;
    width: 20px;
    height: 20px;
    border: none;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
}

.task:hover .task-done-btn {
    opacity: 1;
}

.task-done-btn:hover {
    background: #10b981;
    color: var(--entry);
}

.task.done {
    opacity: 0.6;
}

.task.done .task-title {
    text-decoration: line-through;
}

@media (max-width: 640px) {
    .task {
        width: 220px;
        height: 88px;
        padding: 10px;
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .task {
        width: 200px;
        height: 80px;
        padding: 8px;
        font-size: 12px;
    }
}

@media (max-width: 320px) {
    .task {
        width: 180px;
        height: 72px;
        padding: 6px;
        font-size: 11px;
    }
    
    .task-header {
        font-size: 12px;
        margin-bottom: 2px;
    }
    
    .assignment-badge {
        font-size: 9px;
        padding: 1px 4px;
    }
}

.task:active {
    cursor: grabbing;
}

.task.aligned {
    border-color: #10b981;
    box-shadow: 0 0 0 1px rgba(16, 185, 129, 0.2);
}

.task.unaligned {
    border-color: #f43f5e;
    box-shadow: 0 0 0 1px rgba(244, 63, 94, 0.2);
}

.task-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.task-title {
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    var(--entry)-space: nowrap;
}

.task-assignments {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 4px;
}

.assignment-badge {
    background: var(--entry);
    color: var(--border);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    border: 1px solid var(--border);
}

.no-assignments {
    background: #fef3c7;
    color: #92400e;
    border-color: #fde68a;
}

.unaligned-status {
    margin-top: 4px;
    font-size: 11px;
    color: #dc2626;
}

/* HUD */
.hud {
    position: absolute;
    bottom: 8px;
    right: 12px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 6px;
    padding: 6px 10px;
    font-size: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    pointer-events: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hud-item {
    white-space: nowrap;
}

body.dark .hud {
    background: rgba(46, 46, 51, 0.9);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(8px);
    padding: 8px 12px;
    font-size: 12px;
    color: var(--secondary);
}

/* Dialog */
.dialog-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.dialog-overlay.hidden {
    display: none;
}

.dialog {
    background: var(--entry);
    border-radius: 12px;
    box-shadow: 
        0 20px 25px -5px rgba(0, 0, 0, 0.1),
        0 10px 10px -5px rgba(0, 0, 0, 0.04),
        0 0 0 1px rgba(var(--color-border) / 0.5);
    min-width: 400px;
    backdrop-filter: blur(8px);
    border: 1px solid rgba(var(--color-border) / 0.5);
}

.dialog-header {
    padding: 20px 24px 16px;
}

.dialog-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    font-family: var(--font-system);
    color: var(--primary);
}

.dialog-content {
    padding: 0 24px 16px;
}

.dialog-content input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: var(--font-system);
    background: var(--theme);
    color: var(--primary);
    transition: all 0.2s ease;
}

.dialog-content input:focus {
    outline: none;
    border-color: var(--cyberpunk-teal);
    box-shadow: 0 0 0 3px rgb(16 163 127 / 0.1);
}

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

.dialog-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 16px 24px 20px;
    border-top: 1px solid rgba(var(--color-border) / 0.3);
    margin-top: 8px;
}

/* Drag states */
.dragging {
    opacity: 0.8;
    z-index: 100;
}

.drop-target {
    background: rgba(16, 185, 129, 0.1) !important;
    border-color: #10b981 !important;
}

/* Hidden utility */
.hidden {
    display: none !important;
}

/* Draw.io-Style Dependency System */
/* Connection Ports */
.connection-port {
    position: absolute;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--port-output-color);
    border: 2px solid var(--port-border-color);
    cursor: crosshair;
    opacity: 0;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 10;
    pointer-events: none;
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.4), 0 0 0 1px rgba(59, 130, 246, 0.2);
}

.connection-port.input {
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--port-input-color);
    box-shadow: 0 2px 12px rgba(16, 185, 129, 0.4), 0 0 0 1px rgba(16, 185, 129, 0.2);
}

.connection-port.input::after {
    content: "✓";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    font-weight: bold;
    color: var(--port-border-color);
}

.connection-port.output {
    right: -8px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--port-output-color);
    box-shadow: 0 2px 12px rgba(59, 130, 246, 0.4), 0 0 0 1px rgba(59, 130, 246, 0.2);
}

.connection-port.output::after {
    content: "→";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    font-weight: bold;
    color: var(--port-border-color);
}

/* Port visibility in dependency mode */
.dependency-mode-active .task .connection-port {
    opacity: 1;
    pointer-events: auto;
}

/* Port hover states */
.connection-port:hover {
    transform: translateY(-50%) scale(1.25);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.6), 0 0 0 2px rgba(59, 130, 246, 0.3);
}

.connection-port.input:hover {
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.6), 0 0 0 2px rgba(16, 185, 129, 0.3);
}

.connection-port.output:hover {
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.6), 0 0 0 2px rgba(59, 130, 246, 0.3);
}

/* Active states during drag */
.connection-port.drag-source {
    transform: translateY(-50%) scale(1.3);
    animation: pulse-source 1s ease-in-out infinite;
}

.connection-port.drag-target-valid {
    transform: translateY(-50%) scale(1.4);
    animation: pulse-target 0.8s ease-in-out infinite;
}

.connection-port.drag-target-invalid {
    background: #ef4444 !important;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
}

/* Pulse animations */
@keyframes pulse-source {
    0%, 100% { 
        box-shadow: 0 4px 16px rgba(245, 158, 11, 0.5);
    }
    50% { 
        box-shadow: 0 6px 20px rgba(245, 158, 11, 0.8);
    }
}

@keyframes pulse-target {
    0%, 100% { 
        box-shadow: 0 4px 16px rgba(16, 185, 129, 0.5);
    }
    50% { 
        box-shadow: 0 6px 20px rgba(16, 185, 129, 0.8);
    }
}

/* Live preview connection line */
.dependency-preview-line {
    stroke: var(--connection-line-color);
    stroke-width: 3;
    stroke-dasharray: 10,5;
    fill: none;
    opacity: 0.9;
    pointer-events: none;
    z-index: 5;
    animation: dash 2s linear infinite;
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.2));
}

@keyframes dash {
    to {
        stroke-dashoffset: -30;
    }
}

/* Snap preview circle */
.snap-preview {
    position: absolute;
    width: 24px;
    height: 24px;
    border: 2px solid #10b981;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.1);
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.8);
    transition: all 0.2s ease;
    z-index: 15;
}

.snap-preview.active {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    animation: snap-pulse 0.6s ease-in-out infinite alternate;
}

@keyframes snap-pulse {
    0% { transform: translate(-50%, -50%) scale(1); }
    100% { transform: translate(-50%, -50%) scale(1.1); }
}

/* Task states in dependency mode */
.dependency-mode-active .task {
    transition: all 0.2s ease;
    cursor: crosshair;
}

.dependency-mode-active .task:hover {
    transform: translateZ(0) scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.task.dependency-source {
    border-color: #f59e0b !important;
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.3) !important;
    background: rgba(245, 158, 11, 0.05);
}

.task.dependency-target-valid {
    border-color: #10b981 !important;
    box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.3) !important;
    background: rgba(16, 185, 129, 0.05);
}

.task.dependency-target-invalid {
    border-color: #ef4444 !important;
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.3) !important;
    background: rgba(239, 68, 68, 0.05);
}

/* Dependency creation success animation */
.dependency-success {
    animation: success-flash 0.8s ease-out;
}

@keyframes success-flash {
    0% { 
        background: rgba(16, 185, 129, 0.3);
        transform: scale(1);
    }
    50% { 
        background: rgba(16, 185, 129, 0.1);
        transform: scale(1.05);
    }
    100% { 
        background: transparent;
        transform: scale(1);
    }
}

/* Enhanced dependency lines */
.dependency-line {
    stroke: var(--connection-line-color);
    stroke-width: 3;
    fill: none;
    marker-end: url(#arrowhead);
    opacity: 0.9;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    filter: drop-shadow(0 2px 6px rgba(59, 130, 246, 0.2));
}

.dependency-line:hover {
    stroke-width: 4;
    opacity: 1;
    filter: drop-shadow(0 4px 12px rgba(59, 130, 246, 0.4));
    stroke: #2563eb;
}

.dependency-line.highlighted {
    stroke: var(--connection-line-highlight);
    stroke-width: 4;
    opacity: 1;
    animation: line-highlight 1.2s ease-in-out;
    filter: drop-shadow(0 4px 12px rgba(16, 185, 129, 0.4));
}

@keyframes line-highlight {
    0%, 100% { 
        stroke-width: 3;
        opacity: 1;
    }
    50% { 
        stroke-width: 4;
        opacity: 0.7;
    }
}

/* Delete handle for dependency lines */
.dependency-delete-handle {
    position: absolute;
    width: 20px;
    height: 20px;
    background: #ef4444;
    border: 2px solid var(--entry);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--entry);
    font-size: 10px;
    z-index: 20;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

.dependency-line:hover + .dependency-delete-handle,
.dependency-delete-handle:hover {
    opacity: 1;
    transform: scale(1.1);
}

.dependency-delete-handle:hover {
    background: #dc2626;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.5);
}

/* Enhanced arrow markers */
#arrowhead {
    fill: #6366f1;
    transition: fill 0.2s ease;
}

.dependency-line:hover #arrowhead {
    fill: #4f46e5;
}

/* Mobile and touch optimizations */
@media (max-width: 768px) {
    .connection-port {
        width: 20px;
        height: 20px;
        border-width: 3px;
    }
    
    .connection-port.input {
        left: -10px;
    }
    
    .connection-port.output {
        right: -10px;
    }
    
    .connection-port.input::after,
    .connection-port.output::after {
        font-size: 12px;
    }
    
    .snap-preview {
        width: 32px;
        height: 32px;
        border-width: 3px;
    }
    
    .dependency-delete-handle {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
}

@media (pointer: coarse) {
    .connection-port {
        width: 22px;
        height: 22px;
        border-width: 3px;
    }
    
    .connection-port.input {
        left: -11px;
    }
    
    .connection-port.output {
        right: -11px;
    }
    
    .connection-port.input::after,
    .connection-port.output::after {
        font-size: 13px;
        font-weight: 900;
    }
    
    .dependency-preview-line {
        stroke-width: 4;
    }
    
    .dependency-line {
        stroke-width: 4;
    }
}

/* Accessibility improvements */
.dependency-mode-active .task[tabindex] {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

.dependency-mode-active .task[tabindex]:focus {
    outline-color: #3b82f6;
}

.connection-port[aria-label] {
    position: relative;
}

.connection-port[aria-label]:focus::after {
    content: attr(aria-label);
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: #1f2937;
    color: var(--entry);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 11px;
    var(--entry)-space: nowrap;
    z-index: 100;
}

/* Status indicators for dependency mode */
.dependency-mode-indicator {
    position: fixed;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(59, 130, 246, 0.95);
    color: var(--entry);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 16px rgba(59, 130, 246, 0.3);
    z-index: 1000;
    opacity: 0;
    transform: translateX(-50%) translateY(-20px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.dependency-mode-indicator.active {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.dependency-mode-indicator.success {
    background: rgba(16, 185, 129, 0.95);
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.dependency-mode-indicator.error {
    background: rgba(239, 68, 68, 0.95);
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

/* Keyboard navigation styles */
.connection-port.keyboard-focused {
    transform: translateY(-50%) scale(1.5) !important;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5) !important;
    animation: keyboard-focus-pulse 1s ease-in-out infinite alternate;
}

@keyframes keyboard-focus-pulse {
    0% { box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.5); }
    100% { box-shadow: 0 0 0 5px rgba(59, 130, 246, 0.3); }
}

/* Keyboard dependency preview line */
.keyboard-dependency-preview {
    stroke: #10b981;
    stroke-width: 3;
    stroke-dasharray: 8,4;
    fill: none;
    opacity: 0.9;
    pointer-events: none;
    z-index: 10;
    animation: keyboard-dash 1.5s linear infinite;
}

@keyframes keyboard-dash {
    to {
        stroke-dashoffset: -24;
    }
}

/* Port tooltip styles */
.port-tooltip {
    position: absolute;
    background: #1f2937;
    color: var(--entry);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    z-index: 1000;
    pointer-events: none;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    var(--entry)-space: nowrap;
    animation: tooltip-appear 0.2s ease-out;
}

@keyframes tooltip-appear {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
}

.port-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 6px 6px 0 6px;
    border-color: #1f2937 transparent transparent transparent;
}

/* New drag-based dependency system */
.dependency-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    opacity: 0;
    animation: dependency-overlay-appear 0.2s ease-out forwards;
}

@keyframes dependency-overlay-appear {
    to {
        opacity: 1;
    }
}

.dependency-handle {
    position: absolute;
    top: 50%;
    right: -16px;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    font-weight: bold;
    cursor: grab;
    pointer-events: auto;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
    z-index: 10;
    border: 2px solid white;
}

.dependency-handle:hover {
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
    background: linear-gradient(135deg, #7c3aed, #6d28d9);
}

.dependency-handle:active,
.dependency-handle.dragging {
    cursor: grabbing;
    transform: translateY(-50%) scale(1.2);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.8);
    background: linear-gradient(135deg, #6d28d9, #5b21b6);
}

/* Dependency drag states */
.dependency-dragging {
    user-select: none;
    cursor: grabbing !important;
}

.dependency-drag-line {
    stroke: #8b5cf6;
    stroke-width: 3;
    stroke-dasharray: 8,4;
    pointer-events: none;
    opacity: 0.8;
    animation: dependency-drag-pulse 1s ease-in-out infinite alternate;
}

@keyframes dependency-drag-pulse {
    from { opacity: 0.6; }
    to { opacity: 1; }
}

/* Drop target states */
.dependency-drop-target {
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.5) !important;
    transform: translateY(-2px) scale(1.02);
    border: 2px solid #10b981;
    border-radius: 8px;
}

.dependency-drop-invalid {
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.5) !important;
    transform: translateY(-2px) scale(1.02);
    border: 2px solid #ef4444;
    border-radius: 8px;
}

.dependency-instruction-content {
    text-align: center;
}

.dependency-instruction-content span {
    display: block;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.dependency-instruction-content small {
    display: block;
    font-size: 12px;
    opacity: 0.7;
}

/* Dependency messages */
.dependency-message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    z-index: 1001;
    animation: message-slide-in 0.3s ease-out;
}

@keyframes message-slide-in {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.dependency-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.dependency-error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Mobile improvements for dependency points */
@media (max-width: 768px) {
    .dependency-point {
        width: 28px;
        height: 28px;
        font-size: 16px;
    }
    
    .input-point {
        left: -14px;
    }
    
    .output-point {
        right: -14px;
    }
    
    .dependency-instruction {
        margin: 0 20px;
        max-width: calc(100vw - 40px);
    }
}

/* Touch-friendly improvements */
@media (pointer: coarse) {
    /* Larger touch targets for touch devices */
    .btn {
        min-height: 44px;
        padding: 12px 20px;
        font-size: 16px;
    }
    
    .sidebar-toggle {
        width: 44px;
        height: 44px;
        font-size: 16px;
    }
    
    .remove-btn {
        min-width: 44px;
        min-height: 44px;
        padding: 12px;
    }
    
    .task-delete-btn,
    .person-delete-btn,
    .epic-delete-btn {
        width: 36px;
        height: 36px;
        opacity: 1; /* Always visible on touch devices */
        font-size: 16px;
    }
    
    /* Better spacing for touch */
    .person-card {
        margin-bottom: 20px;
        padding: 12px;
    }
    
    .activity-item {
        margin-bottom: 12px;
    }
    
    /* Make draggable elements easier to grab */
    .person-header {
        padding: 8px 12px;
        min-height: 44px;
        display: flex;
        align-items: center;
    }
    
    .activity {
        min-height: 40px;
        padding: 8px 12px;
        display: flex;
        align-items: center;
    }
    
    .add-activity input {
        min-height: 44px;
        padding: 12px;
        font-size: 16px;
    }
    
    .add-activity button {
        min-height: 44px;
        padding: 12px 16px;
        font-size: 16px;
    }
    
    /* Better Epic touch targets */
    .epic-header {
        min-height: 60px;
        padding: 12px;
    }
    
    .resize-handle {
        width: 20px;
        height: 20px;
        right: 8px;
        bottom: 8px;
    }
    
    /* Task improvements */
    .task {
        padding: 16px;
    }
}

/* Right Details Panel */
.details-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 350px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-left: 1px solid var(--border);
    box-shadow: -4px 0 16px rgba(0, 0, 0, 0.1);
    z-index: 200;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.details-panel.open {
    transform: translateX(0);
}

.details-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.details-panel-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
}

.details-panel-close {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--entry);
    color: var(--secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.details-panel-close:hover {
    background: var(--theme);
    color: var(--primary);
    border-color: #cbd5e1;
}

.details-panel-content {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.details-section {
    padding: 20px;
    border-bottom: 1px solid var(--entry);
}

.details-section:last-child {
    border-bottom: none;
}

.details-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--border);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.details-field {
    margin-bottom: 16px;
}

.details-field:last-child {
    margin-bottom: 0;
}

.details-field-label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--secondary);
    margin-bottom: 4px;
}

.details-field-value {
    font-size: 14px;
    color: var(--primary);
    line-height: 1.5;
}

.details-field-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    color: var(--primary);
    background: var(--entry);
    transition: border-color 0.2s ease;
}

.details-field-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

.details-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    text-transform: capitalize;
}

.details-status-badge.todo {
    background: #fef3c7;
    color: #92400e;
}

.details-status-badge.in-progress {
    background: #dbeafe;
    color: #1d4ed8;
}

.details-status-badge.done {
    background: #d1fae5;
    color: #065f46;
}

.details-status-badge.blocked {
    background: #fee2e2;
    color: #991b1b;
}

.details-priority-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.details-priority-badge.high {
    background: #fee2e2;
    color: #991b1b;
}

.details-priority-badge.medium {
    background: #fef3c7;
    color: #92400e;
}

.details-priority-badge.low {
    background: #e0f2fe;
    color: #0369a1;
}

.details-assignee {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 0;
}

.details-assignee-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #3b82f6;
    color: var(--entry);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.details-assignee-info {
    flex: 1;
}

.details-assignee-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

.details-assignee-role {
    font-size: 12px;
    color: var(--secondary);
}

.details-task-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.details-task-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--entry);
    cursor: pointer;
    transition: all 0.2s ease;
}

.details-task-item:hover {
    border-color: #3b82f6;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.1);
}

.details-task-status {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.details-task-status.done {
    background: #10b981;
    border-color: #10b981;
    color: var(--entry);
}

.details-task-title {
    flex: 1;
    font-size: 13px;
    color: var(--primary);
}

.details-comments {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.details-comment {
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--theme);
}

.details-comment-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.details-comment-author {
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
}

.details-comment-time {
    font-size: 12px;
    color: var(--secondary);
}

.details-comment-body {
    font-size: 13px;
    color: var(--border);
    line-height: 1.4;
}

.details-workload-bar {
    width: 100%;
    height: 8px;
    background: var(--entry);
    border-radius: 4px;
    overflow: hidden;
}

.details-workload-fill {
    height: 100%;
    background: linear-gradient(90deg, #10b981, #3b82f6);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.details-workload-fill.high {
    background: linear-gradient(90deg, #f59e0b, #ef4444);
}

.details-workload-text {
    font-size: 12px;
    color: var(--secondary);
    margin-top: 4px;
}

.details-activity-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.details-activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--entry);
}

.details-activity-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--entry);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.details-activity-content {
    flex: 1;
}

.details-activity-text {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 4px;
}

.details-activity-time {
    font-size: 11px;
    color: var(--secondary);
}

.details-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    text-align: center;
    height: 100%;
}

.details-empty-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--entry);
    color: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
}

.details-empty-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--border);
    margin-bottom: 8px;
}

.details-empty-message {
    font-size: 14px;
    color: var(--secondary);
    line-height: 1.4;
}

/* Mobile Responsive Design */
@media (max-width: 768px) {
    .details-panel {
        width: 80%;
        max-width: 400px;
    }
    
    .details-panel-header {
        padding: 12px 16px;
    }
    
    .details-section {
        padding: 16px;
    }
    
    .details-panel-close {
        width: 36px;
        height: 36px;
    }
}

@media (max-width: 480px) {
    .details-panel {
        width: calc(100vw - 40px);
        max-width: none;
    }
    
    .details-panel-header {
        padding: 12px;
    }
    
    .details-section {
        padding: 12px;
    }
}

@media (max-width: 320px) {
    .details-panel {
        width: 100vw;
        border-left: none;
    }
    
    .details-panel-header {
        padding: 10px;
    }
    
    .details-section {
        padding: 10px;
    }
    
    .details-field-input,
    .details-field-textarea {
        font-size: 16px; /* Prevents zoom on iOS */
    }
}

/* Animation states for panel content */
.details-panel-content.transitioning {
    opacity: 0.5;
    transform: translateY(8px);
}

.details-panel-content.loaded {
    opacity: 1;
    transform: translateY(0);
    transition: all 0.2s ease;
}

/* Smooth hover animations for interactive elements */
.details-field-input,
.details-field-textarea {
    transition: all 0.2s ease;
}

.details-field-input:hover,
.details-field-textarea:hover {
    border-color: var(--secondary);
}

.details-assignee:hover {
    background: rgba(59, 130, 246, 0.05);
    border-radius: 8px;
    transform: translateX(2px);
    transition: all 0.2s ease;
    cursor: pointer;
}

.details-task-item {
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(0);
}

.details-task-item:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
}

.details-activity-item {
    transition: all 0.2s ease;
}

.details-activity-item:hover {
    transform: translateX(4px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.details-workload-fill {
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.details-status-badge,
.details-priority-badge {
    transition: all 0.2s ease;
}

.details-status-badge:hover,
.details-priority-badge:hover {
    transform: scale(1.05);
}

/* Micro-interactions for buttons */
.details-panel-close:active {
    transform: scale(0.95);
}

/* Loading state animations */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.details-loading {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Focus ring improvements */
.details-panel:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: -2px;
}

.details-field-input:focus-visible,
.details-field-textarea:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: -2px;
}

/* Staggered animations for lists */
.details-task-list > .details-task-item,
.details-activity-list > .details-activity-item {
    animation: slideInUp 0.3s ease-out;
    animation-fill-mode: both;
}

.details-task-list > .details-task-item:nth-child(2) {
    animation-delay: 0.1s;
}

.details-task-list > .details-task-item:nth-child(3) {
    animation-delay: 0.2s;
}

.details-activity-list > .details-activity-item:nth-child(2) {
    animation-delay: 0.1s;
}

.details-activity-list > .details-activity-item:nth-child(3) {
    animation-delay: 0.2s;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Focus states for accessibility */
.details-panel:focus-within .details-panel-close {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.details-task-item:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Overlay for mobile when panel is open */
.details-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 199;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.details-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

@media (min-width: 769px) {
    .details-overlay {
        display: none;
    }
}

/* Lucide icons */
.lucide {
    width: 16px;
    height: 16px;
}

@media (max-width: 480px) {
    .lucide {
        width: 14px;
        height: 14px;
    }
}

/* Enhanced accessibility and focus indicators */
*:focus-visible {
    outline: 2px solid var(--cyberpunk-teal);
    outline-offset: 2px;
    border-radius: var(--radius);
}

/* Custom focus styles for form elements */
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 2px solid var(--cyberpunk-teal);
    outline-offset: 2px;
    border-color: var(--cyberpunk-teal);
}

/* High contrast mode improvements */
@media (prefers-contrast: high) {
    :root {
        --color-border: 0 0 0;
        --color-text-muted: 64 64 64;
    }
    
    body.dark {
        --color-border: 255 255 255;
        --color-text-muted: 192 192 192;
    }
    
    *:focus-visible {
        outline-width: 3px;
        outline-color: currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Enhanced Sidebar System */


/* Resize Handles */
.resize-handle {
    position: absolute;
    background: transparent;
    z-index: 100;
    cursor: col-resize;
    user-select: none;
    transition: all 0.2s ease;
    /* Expanded touch target for WCAG 2.5.5 compliance */
    min-width: 44px;
    min-height: 44px;
}

.resize-handle-right {
    top: 0;
    right: -22px; /* Adjusted for 44px touch target */
    width: 44px;
    height: 100%;
    padding-left: 20px;
    box-sizing: border-box;
}

.resize-handle-left {
    top: 0;
    left: -22px; /* Adjusted for 44px touch target */
    width: 44px;
    height: 100%;
    padding-right: 20px;
    box-sizing: border-box;
}

/* Visual indicator (4px) inside larger touch target */
.resize-handle::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 4px;
    background: rgba(0, 255, 255, 0.1);
    transition: all 0.2s ease;
}

.resize-handle-right::before {
    right: 20px;
}

.resize-handle-left::before {
    left: 20px;
}

.resize-handle:hover::before {
    width: 8px;
    background: rgba(0, 255, 255, 0.3);
}

.resize-handle-right:hover {
    background: linear-gradient(90deg, transparent 50%, rgba(0, 255, 255, 0.05));
}

.resize-handle-left:hover {
    background: linear-gradient(270deg, transparent 50%, rgba(0, 255, 255, 0.05));
}

.resize-handle:active::before,
.resize-handle.dragging::before {
    width: 8px;
    background: rgba(0, 255, 255, 0.5);
}

.resize-handle-right:active,
.resize-handle-right.dragging {
    background: linear-gradient(90deg, transparent 40%, rgba(0, 255, 255, 0.1));
}

.resize-handle-left:active,
.resize-handle-left.dragging {
    background: linear-gradient(270deg, transparent 40%, rgba(0, 255, 255, 0.1));
}

/* Enhanced Sidebar Transitions */
.people-palette,
.timeline-sidebar {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: width;
}

.people-palette.resizing,
.timeline-sidebar.resizing {
    transition: none;
}

/* Improved Collapsed States */
.people-palette.collapsed .resize-handle,
.timeline-sidebar.collapsed .resize-handle {
    display: none;
}

/* Width constraints for resizable sidebars */
.people-palette {
    min-width: 48px;
    max-width: 500px;
}

.timeline-sidebar {
    min-width: 48px;
    max-width: 400px;
}

/* Enhanced Mobile Responsive Design */
@media (max-width: 768px) {
    /* Maintain 44px touch target on mobile */
    .resize-handle {
        min-width: 44px;
    }
    
    .resize-handle-right {
        right: -22px;
    }
    
    .resize-handle-left {
        left: -22px;
    }
    
    .people-palette {
        max-width: 280px;
    }
    
    .timeline-sidebar {
        max-width: 260px;
    }
}

@media (max-width: 480px) {
    /* Maintain 44px touch target on small mobile */
    .resize-handle {
        min-width: 44px;
    }
    
    .resize-handle-right {
        right: -22px;
    }
    
    .resize-handle-left {
        left: -22px;
    }
    
    .people-palette {
        max-width: 240px;
    }
    
    .timeline-sidebar {
        max-width: 220px;
    }
}

/* Touch device optimizations */
@media (pointer: coarse) {
    /* Ensure 44px minimum touch target */
    .resize-handle {
        min-width: 44px;
        min-height: 44px;
    }
    
    /* Add visual grip indicator on touch devices */
    .resize-handle::after {
        content: '⋮⋮⋮';
        position: absolute;
        top: 50%;
        transform: translateY(-50%) rotate(90deg);
        color: rgba(0, 255, 255, 0.3);
        font-size: 12px;
        pointer-events: none;
    }
    
    .resize-handle-right::after {
        right: 18px;
    }
    
    .resize-handle-left::after {
        left: 18px;
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .resize-handle-right:hover {
        border-right-width: 3px;
    }
    
    .resize-handle-left:hover {
        border-left-width: 3px;
    }
}

/* Screen Reader Only Text */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Screen reader announcements for sidebar state changes */
.sidebar-announcement {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Focus improvements for keyboard navigation */
.resize-handle:focus-visible {
    outline: 3px solid var(--cyberpunk-teal);
    outline-offset: 2px;
    z-index: 1000;
}

/* Improved focus ring for sidebar toggles */
.sidebar-toggle:focus-visible {
    outline: 2px solid var(--cyberpunk-teal);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgb(16 163 127 / 0.1);
}


/* Skip link for keyboard users - Enhanced accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 6px;
    background: #000;
    color: #fff;
    padding: 12px 20px;
    border-radius: 4px;
    text-decoration: none;
    z-index: 10000;
    transition: top 0.2s;
    font-weight: 600;
    border: 2px solid #fff;
    /* Ensure minimum 44px touch target */
    min-height: 44px;
    display: flex;
    align-items: center;
}

.skip-link:focus {
    top: 6px;
    outline: 3px solid var(--cyberpunk-teal);
    outline-offset: 2px;
}

/* Ensure color contrast for sidebar elements */
.sidebar-toggle {
    /* Fallback for better contrast */
    background: rgba(0, 0, 0, 0.05);
}

.dark .sidebar-toggle {
    background: rgba(255, 255, 255, 0.1);
}

/* Improved resize handle contrast */
.resize-handle::before {
    /* Ensure visible against all backgrounds */
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1),
                0 0 0 2px rgba(255, 255, 255, 0.1);
}

/* Accessibility toast notification */
.accessibility-toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #000;
    color: #fff;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    border: 2px solid rgba(0, 255, 255, 0.3);
}

.accessibility-toast.show {
    transform: translateY(0);
    opacity: 1;
}

@keyframes slideIn {
    from {
        transform: translateY(100px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateY(0);
        opacity: 1;
    }
    to {
        transform: translateY(100px);
        opacity: 0;
    }
}





/* Deadline badges */
.badge.deadline-badge {
    background: #fbbf24;
    color: #451a03;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge.deadline-badge i {
    width: 10px;
    height: 10px;
}

.task-deadline {
    font-size: 10px;
    color: var(--secondary);
    margin: 2px 0;
    display: flex;
    align-items: center;
    gap: 3px;
}

.task-deadline i {
    width: 10px;
    height: 10px;
}

/* North Star add epic button */
.north-star-add-epic-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.2s ease;
    margin-left: 8px;
}
.north-star:hover .north-star-add-epic-btn {
    opacity: 1;
}
.north-star-add-epic-btn:hover {
    background: #3b82f6;
    color: var(--entry);
}

/* ===== PERFORMANCE OPTIMIZATIONS ===== */

/* RAF Animation Performance */
.raf-animating {
    will-change: transform;
    transform: translate3d(0, 0, 0);
}

/* High-performance drag states */
.high-performance-drag {
    will-change: transform;
    transform: translate3d(0, 0, 0);
    transition: none !important;
    pointer-events: none;
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Optimized canvas interactions */
.canvas-optimized {
    will-change: transform;
    transform: translate3d(0, 0, 0);
    contain: layout style paint;
}

/* GPU-accelerated transforms */
.gpu-accelerated {
    will-change: transform;
    transform: translate3d(0, 0, 0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Disable GPU acceleration when not needed */
.gpu-disabled {
    will-change: auto;
    transform: none;
    backface-visibility: visible;
}

/* Performance-optimized selection states */
.selected.performance-mode {
    will-change: transform, box-shadow;
    transform: translate3d(0, 0, 0);
}

/* Throttled interaction states */
.throttled-interaction {
    pointer-events: auto;
}

.throttled-interaction.disabled {
    pointer-events: none;
}

/* Optimized SVG rendering */
.connections.optimized {
    shape-rendering: optimizeSpeed;
    text-rendering: optimizeSpeed;
    color-rendering: optimizeSpeed;
    image-rendering: optimizeSpeed;
}

/* Smooth scrolling optimization */
.smooth-scroll {
    scroll-behavior: auto; /* Disable smooth scroll during drag */
}

/* Memory and layout containment */
.contained {
    contain: layout style paint;
}

/* ===== END PERFORMANCE OPTIMIZATIONS ===== */