/**
 * Copyright 2024-2025 北京思源智教科技有限公司 (Beijing Siyuan Zhijiao Technology Co., Ltd.)
 * All Rights Reserved
 * 
 * Proprietary License - All use without explicit permission is prohibited.
 * Unauthorized use, copying, modification, distribution, or execution is strictly prohibited.
 * 
 * @author WANG CUNCHI
 */

/**
 * Node Palette Styles (Enhanced Professional Grid)
 * =================================================
 * 
 * Sophisticated grid layout for multi-LLM node brainstorming with visual complexity.
 * 
 * Visual Enhancements:
 * - Staggered entrance animations (wave effect)
 * - Gradient backgrounds with subtle LLM-specific tints
 * - Multi-layered depth shadows
 * - Subtle breathing pulse animations
 * - Enhanced hover micro-interactions with lift effect
 * - Glowing selection rings with pulsing animation
 * - Smooth state transitions (400ms cubic-bezier)
 * 
 * Design Features:
 * - Clean professional grid (no overlaps)
 * - Responsive: 2-6 columns based on screen width
 * - Perfect spacing at all breakpoints
 * - LLM-specific color themes (Qwen, DeepSeek, Hunyuan, Kimi)
 * - Accessible and performant animations
 */

/* ============================================================================
   NODE PALETTE PANEL
   ============================================================================ */

.node-palette-panel {
    position: absolute; /* Position relative to editor-main-content */
    top: 0; /* Start at editor-main-content top (after toolbar) - automatically adaptive! */
    left: 0;
    right: 0;
    bottom: 0; /* Fill to bottom of editor-main-content */
    background: var(--bg-primary, #ffffff);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    transition: opacity 0.3s ease, right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reserved for future side panel integration */
.node-palette-panel.side-panel-visible {
    right: 400px; /* Leave space for side panel */
    border-right: 3px solid rgba(102, 126, 234, 0.15);
}

/* ============================================================================
   TESTING WATERMARK
   ============================================================================ */

.node-palette-testing-watermark {
    z-index: 10001; /* Above overlay (1001) and everything else */
    pointer-events: none; /* Allow clicks to pass through */
    opacity: 0;
    transition: opacity 0.3s ease;
    font-size: 120px;
    font-weight: 700;
    color: rgba(102, 126, 234, 0.15); /* Light blue, very transparent */
    letter-spacing: 20px;
    user-select: none;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", sans-serif;
    white-space: nowrap;
}

.node-palette-watermark-overlay {
    pointer-events: none;
    overflow: visible;
}

/* Header */
.node-palette-header {
    position: relative; /* For catapult loader positioning */
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color, #e0e0e0);
    background: var(--bg-secondary, #f5f5f5);
}

.node-palette-title {
    display: flex;
    align-items: center;
    gap: 12px;
}

.node-palette-title svg {
    color: var(--primary-color, #4a90e2);
}

.node-palette-title h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary, #333333);
}

.selection-counter {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary, #666666);
    background: var(--bg-primary, #ffffff);
    padding: 6px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color, #e0e0e0);
}

/* Main Container */
.node-palette-container {
    flex: 1;
    overflow-y: auto !important;
    overflow-x: hidden;
    padding: 24px;
    background: var(--bg-primary, #ffffff);
    max-height: calc(100vh - 200px);
}

.node-palette-container::-webkit-scrollbar {
    width: 10px;
}

.node-palette-container::-webkit-scrollbar-track {
    background: var(--bg-secondary, #f5f5f5);
}

.node-palette-container::-webkit-scrollbar-thumb {
    background: var(--border-color, #cccccc);
    border-radius: 5px;
}

.node-palette-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary, #999999);
}

/* ============================================================================
   ENHANCED PROFESSIONAL GRID LAYOUT (Clean with Visual Complexity)
   ============================================================================ */

.node-palette-grid {
    display: grid;
    /* Fluid responsive columns - adapts to container */
    grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr));
    gap: clamp(20px, 3vw, 36px); /* Fluid gap that scales with viewport */
    margin-bottom: 80px;
    padding: clamp(20px, 4vw, 48px);
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    justify-items: center;
    align-items: start;
    position: relative;
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .node-palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(min(160px, 100%), 1fr));
    }
}

/* ============================================================================
   NODE CARDS
   ============================================================================ */

.node-card {
    position: relative;
    background: linear-gradient(135deg, var(--bg-secondary, #fafafa) 0%, var(--bg-primary, #ffffff) 100%);
    border: 4px solid #4a90e2; /* Default blue */
    border-radius: 50%;
    /* Fluid dimensions - adapts to grid cell */
    width: min(200px, 100%);
    max-width: 200px;
    aspect-ratio: 1 / 1; /* Maintain perfect circle */
    padding: clamp(16px, 3vw, 24px);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06),
                0 2px 8px rgba(0, 0, 0, 0.04);
    animation: fadeInScale 0.5s ease-out forwards;
    will-change: transform, opacity;
    box-sizing: border-box; /* Include border in dimensions */
}

/* Staggered entrance animation (wave effect) */
.node-card:nth-child(1) { animation-delay: 0s; }
.node-card:nth-child(2) { animation-delay: 0.05s; }
.node-card:nth-child(3) { animation-delay: 0.1s; }
.node-card:nth-child(4) { animation-delay: 0.15s; }
.node-card:nth-child(5) { animation-delay: 0.2s; }
.node-card:nth-child(6) { animation-delay: 0.25s; }
.node-card:nth-child(n+7) { animation-delay: 0.3s; }

/* Fade in scale animation */
@keyframes fadeInScale {
    0% {
        opacity: 0;
        transform: translateY(20px) scale(0.9);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Mobile adjustments */
@media (max-width: 768px) {
    .node-card {
        max-width: 160px;
        border-width: 3px;
    }
}

/* LLM-specific border colors and enhanced glows */
.node-card.llm-qwen {
    border-color: #3498db; /* Qwen - Blue */
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.05) 0%, #ffffff 100%);
    box-shadow: 0 4px 16px rgba(52, 152, 219, 0.15),
                0 2px 8px rgba(52, 152, 219, 0.1),
                0 0 0 0 rgba(52, 152, 219, 0.4);
    animation: fadeInScale 0.5s ease-out forwards, subtlePulse 4s ease-in-out 0.5s infinite;
}

.node-card.llm-deepseek {
    border-color: #9b59b6; /* DeepSeek - Purple */
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.05) 0%, #ffffff 100%);
    box-shadow: 0 4px 16px rgba(155, 89, 182, 0.15),
                0 2px 8px rgba(155, 89, 182, 0.1),
                0 0 0 0 rgba(155, 89, 182, 0.4);
    animation: fadeInScale 0.5s ease-out forwards, subtlePulse 4s ease-in-out 0.6s infinite;
}

.node-card.llm-hunyuan {
    border-color: #f39c12; /* Hunyuan - Orange/Gold */
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.05) 0%, #ffffff 100%);
    box-shadow: 0 4px 16px rgba(243, 156, 18, 0.15),
                0 2px 8px rgba(243, 156, 18, 0.1),
                0 0 0 0 rgba(243, 156, 18, 0.4);
    animation: fadeInScale 0.5s ease-out forwards, subtlePulse 4s ease-in-out 0.7s infinite;
}

.node-card.llm-kimi {
    border-color: #1abc9c; /* Kimi - Teal/Green */
    background: linear-gradient(135deg, rgba(26, 188, 156, 0.05) 0%, #ffffff 100%);
    box-shadow: 0 4px 16px rgba(26, 188, 156, 0.15),
                0 2px 8px rgba(26, 188, 156, 0.1),
                0 0 0 0 rgba(26, 188, 156, 0.4);
    animation: fadeInScale 0.5s ease-out forwards, subtlePulse 4s ease-in-out 0.8s infinite;
}

.node-card.llm-doubao {
    border-color: #e91e63; /* Doubao - Pink/Magenta */
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.05) 0%, #ffffff 100%);
    box-shadow: 0 4px 16px rgba(233, 30, 99, 0.15),
                0 2px 8px rgba(233, 30, 99, 0.1),
                0 0 0 0 rgba(233, 30, 99, 0.4);
    animation: fadeInScale 0.5s ease-out forwards, subtlePulse 4s ease-in-out 0.9s infinite;
}

/* Subtle breathing pulse animation */
@keyframes subtlePulse {
    0%, 100% {
        box-shadow: 0 4px 16px rgba(var(--glow-rgb), 0.15),
                    0 2px 8px rgba(var(--glow-rgb), 0.1);
    }
    50% {
        box-shadow: 0 6px 20px rgba(var(--glow-rgb), 0.22),
                    0 3px 12px rgba(var(--glow-rgb), 0.15);
    }
}

.node-card:hover {
    transform: scale(1.08) translateY(-6px);
    border-width: 5px;
    animation: none; /* Stop pulse on hover for cleaner interaction */
}

/* LLM-specific hover states with dramatic glow */
.node-card.llm-qwen:hover {
    box-shadow: 0 8px 32px rgba(52, 152, 219, 0.35),
                0 4px 16px rgba(52, 152, 219, 0.25),
                0 0 0 8px rgba(52, 152, 219, 0.1),
                0 0 60px rgba(52, 152, 219, 0.2);
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.12) 0%, #ffffff 100%);
}

.node-card.llm-deepseek:hover {
    box-shadow: 0 8px 32px rgba(155, 89, 182, 0.35),
                0 4px 16px rgba(155, 89, 182, 0.25),
                0 0 0 8px rgba(155, 89, 182, 0.1),
                0 0 60px rgba(155, 89, 182, 0.2);
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.12) 0%, #ffffff 100%);
}

.node-card.llm-hunyuan:hover {
    box-shadow: 0 8px 32px rgba(243, 156, 18, 0.35),
                0 4px 16px rgba(243, 156, 18, 0.25),
                0 0 0 8px rgba(243, 156, 18, 0.1),
                0 0 60px rgba(243, 156, 18, 0.2);
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.12) 0%, #ffffff 100%);
}

.node-card.llm-kimi:hover {
    box-shadow: 0 8px 32px rgba(26, 188, 156, 0.35),
                0 4px 16px rgba(26, 188, 156, 0.25),
                0 0 0 8px rgba(26, 188, 156, 0.1),
                0 0 60px rgba(26, 188, 156, 0.2);
    background: linear-gradient(135deg, rgba(26, 188, 156, 0.12) 0%, #ffffff 100%);
}

/* Node Card Content */
.node-card-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.node-text {
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary, #333333);
    line-height: 1.45;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    line-clamp: 5; /* Standard property for compatibility */
    -webkit-box-orient: vertical;
    word-break: break-word;
}

.node-source {
    position: absolute;
    bottom: 14px;
    font-size: 11px;
    color: var(--text-secondary, #999999);
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.8px;
    opacity: 0.7;
}

/* For difference nodes (rectangles), position source in lower left */
.node-card.difference-pair .node-source {
    left: 14px;
    bottom: 12px;
}

/* Difference Node Styles (Two-line comparison) */
.node-card-difference {
    gap: 8px;
    width: 100%;
}

/* Override circle shape for difference nodes - use rounded rectangles instead */
.node-card.difference-pair {
    border-radius: 16px !important;
    aspect-ratio: auto !important; /* Allow natural height based on content */
    min-height: 160px; /* Ensure adequate height */
    max-width: 280px; /* Wider for comparison text */
    padding: 20px 24px; /* More padding for breathing room */
}

/* Enhanced hover for difference nodes */
.node-card.difference-pair:hover {
    transform: scale(1.05) translateY(-4px) !important; /* Slightly less dramatic than circles */
    border-width: 5px;
}

/* Mobile adjustments for difference nodes */
@media (max-width: 768px) {
    .node-card.difference-pair {
        max-width: 240px;
        min-height: 140px;
        padding: 16px 20px;
        border-width: 3px;
    }
    
    .node-text-line {
        font-size: 14px;
        padding: 6px 10px;
    }
    
    .node-dimension {
        font-size: 10px;
        padding: 6px 10px 4px 10px;
    }
}

.node-subtitle {
    font-size: 10px;
    font-weight: 500;
    color: var(--text-secondary, #999999);
    opacity: 0.6;
    text-align: center;
    margin-bottom: 8px;
    letter-spacing: 0.2px;
    font-style: italic;
}

.node-text-split {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 8px;
    position: relative;
}

.node-text-line {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary, #333333);
    line-height: 1.5;
    word-break: break-word;
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.02);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.node-text-line:first-child {
    border-left: 3px solid rgba(74, 144, 226, 0.4); /* Subtle accent */
}

.node-text-line:last-child {
    border-left: 3px solid rgba(46, 204, 113, 0.4); /* Different color for contrast */
}

.node-card.difference-pair:hover .node-text-line {
    background: rgba(0, 0, 0, 0.04);
}

.node-text-divider {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary, #999999);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    opacity: 0.5;
    margin: 0;
    position: relative;
}

.node-text-divider::before,
.node-text-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0,0,0,0.1), transparent);
}

.node-text-divider::before {
    left: 5%;
}

.node-text-divider::after {
    right: 5%;
}

.node-comparison-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary, #777777);
    text-align: center;
    opacity: 0.7;
    margin-top: 4px;
    padding: 3px 8px;
    background: rgba(0, 0, 0, 0.03);
    border-radius: 10px;
    letter-spacing: 0.5px;
}

.node-dimension {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary, #888888);
    text-align: center;
    opacity: 0.7;
    padding: 8px 12px 6px 12px;
    margin-top: 4px;
    font-style: italic;
    letter-spacing: 0.4px;
    background: rgba(74, 144, 226, 0.05);
    border-radius: 6px;
    border: 1px dashed rgba(74, 144, 226, 0.2);
}

/* Checkmark (hidden by default) */
.node-checkmark {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    background: var(--primary-color, #4a90e2);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.5);
}

/* LLM-specific checkmark colors */
.node-card.llm-qwen .node-checkmark {
    background: #3498db;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.5);
}

.node-card.llm-deepseek .node-checkmark {
    background: #9b59b6;
    box-shadow: 0 2px 8px rgba(155, 89, 182, 0.5);
}

.node-card.llm-hunyuan .node-checkmark {
    background: #f39c12;
    box-shadow: 0 2px 8px rgba(243, 156, 18, 0.5);
}

.node-card.llm-kimi .node-checkmark {
    background: #1abc9c;
    box-shadow: 0 2px 8px rgba(26, 188, 156, 0.5);
}

/* ============================================================================
   SELECTED STATE (with animations)
   ============================================================================ */

.node-card.selected {
    border-width: 6px;
    transform: scale(1.1);
    animation: selectedPulse 2s ease-in-out infinite !important; /* Distinct selected pulse */
}

.node-card.selected:hover {
    transform: scale(1.12) translateY(-8px);
}

/* Selected pulse animation - more pronounced */
@keyframes selectedPulse {
    0%, 100% {
        transform: scale(1.1);
    }
    50% {
        transform: scale(1.12);
    }
}

/* LLM-specific selected state colors with intense glow and ring */
.node-card.llm-qwen.selected {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.15) 0%, rgba(52, 152, 219, 0.05) 100%);
    box-shadow: 0 0 0 6px rgba(52, 152, 219, 0.3),
                0 0 0 10px rgba(52, 152, 219, 0.15),
                0 12px 40px rgba(52, 152, 219, 0.4),
                0 0 60px rgba(52, 152, 219, 0.3);
}

.node-card.llm-deepseek.selected {
    background: linear-gradient(135deg, rgba(155, 89, 182, 0.15) 0%, rgba(155, 89, 182, 0.05) 100%);
    box-shadow: 0 0 0 6px rgba(155, 89, 182, 0.3),
                0 0 0 10px rgba(155, 89, 182, 0.15),
                0 12px 40px rgba(155, 89, 182, 0.4),
                0 0 60px rgba(155, 89, 182, 0.3);
}

.node-card.llm-hunyuan.selected {
    background: linear-gradient(135deg, rgba(243, 156, 18, 0.15) 0%, rgba(243, 156, 18, 0.05) 100%);
    box-shadow: 0 0 0 6px rgba(243, 156, 18, 0.3),
                0 0 0 10px rgba(243, 156, 18, 0.15),
                0 12px 40px rgba(243, 156, 18, 0.4),
                0 0 60px rgba(243, 156, 18, 0.3);
}

.node-card.llm-kimi.selected {
    background: linear-gradient(135deg, rgba(26, 188, 156, 0.15) 0%, rgba(26, 188, 156, 0.05) 100%);
    box-shadow: 0 0 0 6px rgba(26, 188, 156, 0.3),
                0 0 0 10px rgba(26, 188, 156, 0.15),
                0 12px 40px rgba(26, 188, 156, 0.4),
                0 0 60px rgba(26, 188, 156, 0.3);
}

.node-card.llm-doubao.selected {
    background: linear-gradient(135deg, rgba(233, 30, 99, 0.15) 0%, rgba(233, 30, 99, 0.05) 100%);
    box-shadow: 0 0 0 6px rgba(233, 30, 99, 0.3),
                0 0 0 10px rgba(233, 30, 99, 0.15),
                0 12px 40px rgba(233, 30, 99, 0.4),
                0 0 60px rgba(233, 30, 99, 0.3);
}

.node-card.selected .node-checkmark {
    opacity: 1;
    transform: scale(1);
    animation: checkmark-bounce 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.node-card.selected .node-text {
    font-weight: 600;
    color: var(--primary-color, #4a90e2);
}

/* Checkmark bounce animation */
@keyframes checkmark-bounce {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

/* Removed old glow pulse animations - replaced with subtlePulse */

/* ============================================================================
   END MESSAGE
   ============================================================================ */

.end-message {
    grid-column: 1 / -1;
    text-align: center;
    padding: 32px;
    background: var(--bg-secondary, #f5f5f5);
    border-radius: 8px;
    border: 2px dashed var(--border-color, #cccccc);
    margin-top: 16px;
}

.end-message p {
    margin: 8px 0;
    font-size: 14px;
    color: var(--text-secondary, #666666);
}

.end-message p:first-child {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-primary, #333333);
}

/* ============================================================================
   FOOTER (Finish Button)
   ============================================================================ */

.node-palette-footer {
    position: sticky; /* Stick to bottom of panel, not viewport */
    bottom: 0;
    padding: 20px 24px;
    background: var(--bg-secondary, #f5f5f5);
    border-top: 1px solid var(--border-color, #e0e0e0);
    display: flex;
    justify-content: center;
    gap: 12px; /* Space between Cancel and Next buttons */
    z-index: 1001;
    margin-top: auto; /* Push to bottom of flex container */
}

.finish-selection-btn {
    padding: 14px 48px;
    font-size: 16px;
    font-weight: 600;
    background: var(--primary-color, #4a90e2);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
}

.finish-selection-btn:hover:not(:disabled) {
    background: var(--primary-dark, #3a7bc8);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(74, 144, 226, 0.4);
}

.finish-selection-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(74, 144, 226, 0.3);
}

.finish-selection-btn:disabled {
    background: var(--border-color, #cccccc);
    color: var(--text-secondary, #999999);
    cursor: not-allowed;
    box-shadow: none;
}

/* Cancel Button */
.cancel-palette-btn {
    padding: 14px 36px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary, #333333);
    background: transparent;
    border: 2px solid var(--border-color, #cccccc);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cancel-palette-btn:hover {
    background: var(--bg-secondary, #f5f5f5);
    border-color: var(--text-secondary, #999999);
    transform: translateY(-2px);
}

.cancel-palette-btn:active {
    transform: translateY(0);
}

/* ============================================================================
   LOADING INDICATOR
   ============================================================================ */

.node-palette-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 32px;
    color: var(--text-secondary, #666666);
    font-size: 14px;
}

.node-palette-loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    margin-left: 12px;
    border: 3px solid var(--border-color, #cccccc);
    border-top-color: var(--primary-color, #4a90e2);
    border-radius: 50%;
    animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================================================
   BATCH TRANSITION ANIMATION (Between Batches)
   ============================================================================ */

.batch-transition {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 32px;
    margin-top: 24px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.transition-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

/* Elegant Triple Ring Spinner */
.transition-spinner {
    position: relative;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner-ring {
    position: absolute;
    border-radius: 50%;
    border: 3px solid transparent;
}

.spinner-ring:nth-child(1) {
    width: 80px;
    height: 80px;
    border-top-color: #3498db;
    border-right-color: #3498db;
    animation: spin-ring 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.spinner-ring:nth-child(2) {
    width: 60px;
    height: 60px;
    border-top-color: #9b59b6;
    border-right-color: #9b59b6;
    animation: spin-ring 1.2s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite reverse;
}

.spinner-ring:nth-child(3) {
    width: 40px;
    height: 40px;
    border-top-color: #1abc9c;
    border-right-color: #1abc9c;
    animation: spin-ring 0.9s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

@keyframes spin-ring {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Transition Text */
.transition-text {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary, #333333);
    animation: text-fade 2s ease-in-out infinite;
}

.transition-subtext {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary, #999999);
    animation: text-fade 2s ease-in-out 0.5s infinite;
}

@keyframes text-fade {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* Dark mode support for transition */
[data-theme="dark"] .transition-text {
    color: var(--text-primary-dark, #e0e0e0);
}

[data-theme="dark"] .transition-subtext {
    color: var(--text-secondary-dark, #999999);
}

/* ============================================================================
   DARK MODE SUPPORT
   ============================================================================ */

[data-theme="dark"] .node-palette-panel {
    background: var(--bg-primary-dark, #1a1a1a);
}

[data-theme="dark"] .node-palette-header {
    background: var(--bg-secondary-dark, #252525);
    border-bottom-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .node-palette-title h3 {
    color: var(--text-primary-dark, #e0e0e0);
}

[data-theme="dark"] .selection-counter {
    background: var(--bg-primary-dark, #1a1a1a);
    color: var(--text-secondary-dark, #999999);
    border-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .node-palette-container {
    background: var(--bg-primary-dark, #1a1a1a);
}

[data-theme="dark"] .node-card {
    background: var(--bg-secondary-dark, #252525);
    border-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .node-card:hover {
    border-color: var(--primary-color, #4a90e2);
}

[data-theme="dark"] .node-card.selected {
    background: var(--primary-dark-bg, #1a2a3a);
}

[data-theme="dark"] .node-text {
    color: var(--text-primary-dark, #e0e0e0);
}

[data-theme="dark"] .node-text-line {
    color: var(--text-primary-dark, #e0e0e0);
}

[data-theme="dark"] .node-text-divider {
    color: var(--text-secondary-dark, #888888);
}

[data-theme="dark"] .node-comparison-label {
    color: var(--text-secondary-dark, #999999);
    background: rgba(255, 255, 255, 0.05);
}

[data-theme="dark"] .end-message {
    background: var(--bg-secondary-dark, #252525);
    border-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .node-palette-footer {
    background: var(--bg-secondary-dark, #252525);
    border-top-color: var(--border-color-dark, #3a3a3a);
}

/* ============================================================================
   TAB SWITCHER (Double Bubble Map & Multi Flow Map)
   ============================================================================ */

#node-palette-tabs {
    display: none; /* Hidden by default, shown for diagrams with tabs (double_bubble_map, multi_flow_map) */
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-secondary, #f5f5f5);
    border-bottom: 1px solid var(--border-color, #e0e0e0);
    position: relative;
}

.palette-tabs {
    display: flex;
    gap: 8px;
    position: relative;
}

.tab-button {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary, #666666);
    background: transparent;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.tab-button:hover {
    color: var(--primary-color, #4a90e2);
    background: rgba(74, 144, 226, 0.1);
}

.tab-button.active {
    color: var(--primary-color, #4a90e2);
    font-weight: 600;
}

/* Locked tab styles (read-only mode - clickable to view) */
.tab-button.locked {
    opacity: 0.6;
    cursor: pointer;  /* Changed from not-allowed to pointer */
    background: rgba(0, 0, 0, 0.05);
    /* Removed pointer-events: none - allow clicks to view in read-only mode */
}

.tab-button.locked:hover {
    opacity: 0.75;  /* Slightly brighter on hover to show it's clickable */
    color: var(--text-secondary, #666666);
    background: rgba(0, 0, 0, 0.08);
}

.tab-button .lock-icon {
    margin-left: 4px;
    font-size: 0.85em;
    opacity: 0.7;
}

/* Shake animation for locked tab when user tries to modify */
@keyframes shake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* Stage transition overlay (tree map workflow) */
.stage-transition-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(74, 144, 226, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stage-transition-content {
    text-align: center;
    color: white;
    animation: stage-bounce 0.6s ease-out;
}

.stage-transition-icon {
    font-size: 48px;
    margin-bottom: 16px;
    animation: stage-spin 1s ease-in-out infinite;
}

.stage-transition-text {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.stage-transition-subtext {
    font-size: 16px;
    opacity: 0.9;
}

@keyframes stage-bounce {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes stage-spin {
    0%, 100% {
        transform: rotate(-10deg);
    }
    50% {
        transform: rotate(10deg);
    }
}

/* Sliding indicator */
.palette-tabs::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    background: var(--primary-color, #4a90e2);
    border-radius: 3px 3px 0 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1;
}

.palette-tabs[data-active="similarities"]::before {
    width: var(--tab-indicator-width, 120px);
    transform: translateX(0);
}

.palette-tabs[data-active="differences"]::before {
    width: var(--tab-indicator-width, 120px);
    transform: translateX(var(--tab-indicator-offset, 128px));
}

.tab-counter {
    display: inline-block;
    margin-left: 6px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary, #666666);
    background: var(--bg-primary, #ffffff);
    border-radius: 12px;
}

.tab-button.active .tab-counter {
    color: var(--primary-color, #4a90e2);
    background: rgba(74, 144, 226, 0.15);
}

/* ============================================================================
   PAIR CARDS (Double Bubble Map Differences Tab)
   ============================================================================ */

.node-pair-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--bg-primary, #ffffff);
    border: 2px solid var(--border-color, #e0e0e0);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    opacity: 0;
    transform: translateY(10px);
}

.node-pair-container:hover {
    border-color: var(--primary-color, #4a90e2);
    box-shadow: 0 4px 12px rgba(74, 144, 226, 0.15);
    transform: translateY(-2px);
}

.node-pair-container.selected {
    border-color: var(--primary-color, #4a90e2);
    background: rgba(74, 144, 226, 0.05);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

/* Individual circular nodes in pair */
.pair-node {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--bg-secondary, #f5f5f5);
    border: 2px solid var(--border-color, #e0e0e0);
    transition: all 0.3s ease;
}

.pair-node-left {
    justify-self: end;
    background: linear-gradient(135deg, rgba(74, 144, 226, 0.1), rgba(74, 144, 226, 0.05));
}

.pair-node-right {
    justify-self: start;
    background: linear-gradient(135deg, rgba(46, 204, 113, 0.1), rgba(46, 204, 113, 0.05));
}

.node-pair-container:hover .pair-node {
    transform: scale(1.05);
}

.pair-node-content {
    text-align: center;
    padding: 8px;
    width: 100%;
}

.pair-node-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary, #666666);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.pair-node-text {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary, #333333);
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.3;
}

/* Connection line between nodes */
.pair-connection {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.connection-line {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, 
        var(--primary-color, #4a90e2), 
        rgba(74, 144, 226, 0.5), 
        var(--success-color, #2ecc71)
    );
    position: relative;
}

.connection-icon {
    font-size: 20px;
    margin-top: 4px;
    filter: grayscale(30%);
}

/* LLM source badge and checkmark for pairs */
.pair-source {
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 10px;
    font-weight: 600;
    padding: 4px 8px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 4px;
    color: var(--text-secondary, #666666);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pair-checkmark {
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: 24px;
    color: var(--primary-color, #4a90e2);
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.node-pair-container.selected .pair-checkmark {
    opacity: 1;
    transform: scale(1);
}

/* LLM-specific styling for pair containers */
.node-pair-container.llm-qwen {
    border-color: rgba(138, 43, 226, 0.3);
}

.node-pair-container.llm-qwen:hover,
.node-pair-container.llm-qwen.selected {
    border-color: rgba(138, 43, 226, 0.6);
}

.node-pair-container.llm-deepseek {
    border-color: rgba(230, 126, 34, 0.3);
}

.node-pair-container.llm-deepseek:hover,
.node-pair-container.llm-deepseek.selected {
    border-color: rgba(230, 126, 34, 0.6);
}

.node-pair-container.llm-hunyuan {
    border-color: rgba(46, 204, 113, 0.3);
}

.node-pair-container.llm-hunyuan:hover,
.node-pair-container.llm-hunyuan.selected {
    border-color: rgba(46, 204, 113, 0.6);
}

.node-pair-container.llm-kimi {
    border-color: rgba(52, 152, 219, 0.3);
}

.node-pair-container.llm-kimi:hover,
.node-pair-container.llm-kimi.selected {
    border-color: rgba(52, 152, 219, 0.6);
}

/* Dark mode support for tabs and pairs */
[data-theme="dark"] #node-palette-tabs {
    background: var(--bg-secondary-dark, #252525);
    border-bottom-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .tab-button {
    color: var(--text-secondary-dark, #999999);
}

[data-theme="dark"] .tab-button:hover {
    background: rgba(74, 144, 226, 0.15);
}

[data-theme="dark"] .tab-counter {
    background: var(--bg-primary-dark, #1a1a1a);
}

[data-theme="dark"] .node-pair-container {
    background: var(--bg-secondary-dark, #252525);
    border-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .node-pair-container:hover {
    border-color: var(--primary-color, #4a90e2);
}

[data-theme="dark"] .node-pair-container.selected {
    background: rgba(74, 144, 226, 0.1);
}

[data-theme="dark"] .pair-node {
    background: var(--bg-primary-dark, #1a1a1a);
    border-color: var(--border-color-dark, #3a3a3a);
}

[data-theme="dark"] .pair-node-text {
    color: var(--text-primary-dark, #e0e0e0);
}

[data-theme="dark"] .pair-source {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary-dark, #999999);
}

/* ================================================
   CATAPULT LOADING ANIMATION
   ================================================ */

.catapult-loader {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(147, 51, 234, 0.1));
    backdrop-filter: blur(10px);
    padding: 16px 24px;
    border-top: 1px solid rgba(59, 130, 246, 0.3);
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
    display: flex;
    align-items: center;
    gap: 16px;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.catapult-spinner {
    display: flex;
    gap: 6px;
    align-items: center;
}

.spinner-circle {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #3b82f6, #9333ea);
    animation: catapult-pulse 1.4s ease-in-out infinite;
}

.spinner-circle:nth-child(1) {
    animation-delay: 0s;
}

.spinner-circle:nth-child(2) {
    animation-delay: 0.2s;
}

.spinner-circle:nth-child(3) {
    animation-delay: 0.4s;
}

.spinner-circle:nth-child(4) {
    animation-delay: 0.6s;
}

@keyframes catapult-pulse {
    0%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.catapult-status {
    flex: 1;
    font-size: 14px;
    font-weight: 600;
    color: #3b82f6;
    letter-spacing: 0.3px;
}

.catapult-progress {
    flex: 0 0 200px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #9333ea);
    border-radius: 3px;
    transition: width 0.4s ease;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

/* Dark mode */
[data-theme="dark"] .catapult-loader {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(147, 51, 234, 0.15));
    border-color: rgba(59, 130, 246, 0.4);
}

[data-theme="dark"] .catapult-status {
    color: #60a5fa;
}

[data-theme="dark"] .progress-bar {
    background: rgba(59, 130, 246, 0.3);
}

/* ============================================
   TAB LOADING OVERLAY (For Double Bubble Tabs)
   ============================================ */

.tab-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: 12px;
}

.tab-loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.tab-loading-spinner {
    position: relative;
    width: 80px;
    height: 80px;
}

.tab-loading-spinner .spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 4px solid transparent;
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: tab-spinner-spin 1.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) infinite;
}

.tab-loading-spinner .spinner-ring:nth-child(2) {
    border-top-color: #9333ea;
    animation-delay: 0.2s;
    width: 90%;
    height: 90%;
    top: 5%;
    left: 5%;
}

.tab-loading-spinner .spinner-ring:nth-child(3) {
    border-top-color: #06b6d4;
    animation-delay: 0.4s;
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
}

@keyframes tab-spinner-spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.tab-loading-text {
    font-size: 16px;
    font-weight: 600;
    color: #1e293b;
    text-align: center;
    white-space: pre-line;
    line-height: 1.6;
    letter-spacing: 0.3px;
}

/* Dark mode */
[data-theme="dark"] .tab-loading-overlay {
    background: rgba(15, 23, 42, 0.95);
}

[data-theme="dark"] .tab-loading-text {
    color: #f1f5f9;
}

/* ============================================================================
   FLOW MAP SEQUENCE BADGES
   ============================================================================ */

/* Sequence badge for flow map step ordering */
.sequence-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    background: linear-gradient(135deg, #4a90e2 0%, #357abd 100%);
    color: white;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    z-index: 2;
    box-shadow: 
        0 2px 4px rgba(74, 144, 226, 0.3),
        0 1px 2px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hover effect for sequence badge */
.node-card:hover .sequence-badge {
    transform: scale(1.1);
    box-shadow: 
        0 4px 8px rgba(74, 144, 226, 0.4),
        0 2px 4px rgba(0, 0, 0, 0.15);
}

/* Selected card sequence badge */
.node-card.selected .sequence-badge {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
    box-shadow: 
        0 3px 6px rgba(34, 197, 94, 0.4),
        0 1px 3px rgba(0, 0, 0, 0.15);
}

/* Dark mode support */
[data-theme="dark"] .sequence-badge {
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
}

[data-theme="dark"] .node-card.selected .sequence-badge {
    background: linear-gradient(135deg, #34d399 0%, #10b981 100%);
}

/* Ensure sequence badge doesn't interfere with node content */
.node-card {
    position: relative;
}

.node-card-content {
    padding-left: 40px; /* Make room for sequence badge */
}

/* Override padding for non-flow-map cards */
.node-card:not(:has(.sequence-badge)) .node-card-content {
    padding-left: 16px; /* Original padding */
}