/* Custom Colors and Theme Settings - Apple / Notion Modern Minimalist Theme */
:root {
    --bg-void: #f5f5f7; /* Apple light gray */
    --panel-glass: #ffffff; /* Notion flat white card */
    --border-glass: #d2d2d7; /* Apple border gray */
    
    --color-green: #34c759; /* Apple green */
    --color-blue: #0071e3; /* Apple blue */
    --color-cyan: #0071e3; /* Using Apple blue instead of neon cyan */
    --color-orange: #ff9500; /* Apple orange */
    --color-red: #ff3b30; /* Apple red */
    
    --color-text-main: #1d1d1f; /* Apple charcoal */
    --color-text-muted: #86868b; /* Apple gray */
    --shadow-glow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Base Body Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-void);
    color: var(--color-text-main);
    min-height: 100vh;
    padding: 24px;
    overflow-x: hidden;
}

.container {
    max-width: 1540px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Header Section styling */
.app-header {
    text-align: center;
    padding: 20px 0 16px 0;
    border-bottom: 1px solid #e5e5e7;
}

.fantasy-title {
    font-family: 'Outfit', sans-serif;
    font-size: 2.4rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #1d1d1f 30%, var(--color-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 8px;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    font-weight: 400;
    letter-spacing: 0.2px;
}

.current-config-bar {
    margin-top: 14px;
    display: inline-flex;
    gap: 20px;
    background: #ffffff;
    padding: 8px 18px;
    border-radius: 20px;
    border: 1px solid var(--border-glass);
    font-size: 0.85rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.current-config-bar span {
    color: var(--color-text-muted);
}

.current-config-bar strong {
    color: var(--color-text-main);
    font-weight: 600;
}

/* Dashboard Layout Grid - Modern 2 Column Spanning Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 580px 1fr;
    grid-template-rows: auto auto;
    gap: 24px;
    align-items: start;
}

.panel-arena {
    grid-column: 1;
    grid-row: 1;
}

.panel-labs {
    grid-column: 1;
    grid-row: 2;
}

.panel-tree {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: stretch; /* Stretch to fill vertical space */
    display: flex;
    flex-direction: column;
}

/* Responsiveness Media Query */
@media (max-width: 1150px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: 20px;
    }
    .panel-arena, .panel-labs, .panel-tree {
        grid-column: 1;
        grid-row: auto;
    }
}

/* Minimalist Card Panels (Notion Style) */
.glass-card {
    background: var(--panel-glass);
    border: 1px solid var(--border-glass);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.glass-card:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.07);
}

.panel-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.2px;
    border-bottom: 1px solid #e5e5e7;
    padding-bottom: 10px;
    color: var(--color-text-main);
}

/* Clean text accents without neon glows */
.text-green { color: var(--color-green); }
.text-cyan { color: var(--color-blue); }
.text-orange { color: var(--color-orange); }
.text-red { color: var(--color-red); }
.text-blue { color: var(--color-blue); }

/* Panel 1: Arena layout */
.canvas-container {
    background: #fafafa;
    border-radius: 8px;
    border: 1px solid #e5e5e7;
    padding: 12px;
    margin-bottom: 20px;
    overflow: hidden;
}

#arenaCanvas {
    display: block;
    width: 100%;
    height: auto;
}

/* Controls */
.arena-controls {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
}

.control-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.control-row label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.custom-select {
    background: #ffffff;
    border: 1px solid var(--border-glass);
    color: var(--color-text-main);
    padding: 8px 12px;
    border-radius: 8px;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    flex: 1;
    max-width: 260px;
    transition: all 0.2s ease;
}

.custom-select:hover {
    border-color: #86868b;
}

.custom-select:focus {
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

.control-actions {
    display: grid;
    grid-template-columns: 1fr 1fr 2fr;
    gap: 10px;
}

/* Modern Minimalist Buttons */
.btn {
    border: none;
    border-radius: 8px;
    padding: 10px 16px;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
    outline: none;
}

.btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-blue);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: #0077ed;
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.2);
}

.btn-secondary {
    background: #f5f5f7;
    color: var(--color-text-main);
    border: 1px solid var(--border-glass);
}

.btn-secondary:hover:not(:disabled) {
    background: #e5e5e7;
}

.btn-action {
    background: rgba(0, 113, 227, 0.08);
    border: 1px solid rgba(0, 113, 227, 0.2);
    color: var(--color-blue);
}

.btn-action:hover:not(:disabled) {
    background: rgba(0, 113, 227, 0.15);
}

.btn-danger {
    background: rgba(255, 59, 48, 0.08);
    border: 1px solid rgba(255, 59, 48, 0.2);
    color: var(--color-red);
}

.btn-danger:hover:not(:disabled) {
    background: rgba(255, 59, 48, 0.15);
}

.w-100 { width: 100%; }

/* Game Scores Box */
.game-scores {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    background: #f5f5f7;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #e5e5e7;
    margin-bottom: 20px;
}

.score-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
}

.score-label {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.score-value {
    font-size: 1.25rem;
    font-weight: 700;
}

/* Moves chronicle logs */
.log-container h3 {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 10px;
    font-weight: 600;
}

.game-log {
    background: #fafafa;
    border-radius: 8px;
    border: 1px solid #e5e5e7;
    height: 120px;
    overflow-y: auto;
    padding: 12px;
    font-family: -apple-system-font, "SFMono-Regular", Consolas, Menlo, monospace;
    font-size: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 6px;
    scroll-behavior: smooth;
    color: var(--color-text-main);
}

.log-entry {
    border-left: 2px solid var(--color-text-muted);
    padding-left: 8px;
}

.log-entry.max { border-color: var(--color-green); color: #1e7e34; }
.log-entry.min { border-color: var(--color-red); color: #bd2130; }
.log-entry.system { border-color: var(--color-blue); color: #0056b3; }

/* Panel 2: Tree search visualizer viewport */
.tree-controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #f5f5f7;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid #e5e5e7;
    margin-bottom: 16px;
}

.toggle-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.toggle-label {
    font-size: 0.85rem;
    font-weight: 600;
}

/* Bounded Depth slider */
.slider-container {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    font-weight: 500;
}

.depth-slider {
    -webkit-appearance: none;
    width: 80px;
    height: 4px;
    border-radius: 2px;
    background: #d2d2d7;
    outline: none;
}

.depth-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-blue);
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

/* Toggle Switch slider */
.switch {
    position: relative;
    display: inline-block;
    width: 34px;
    height: 20px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #d2d2d7;
    transition: .2s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 14px;
    width: 14px;
    left: 3px;
    bottom: 3px;
    background-color: white;
    transition: .2s;
}

input:checked + .slider { background-color: var(--color-blue); }
input:checked + .slider:before { transform: translateX(14px); }
.switch input:focus-visible + .slider {
    outline: 2px solid var(--color-blue);
    outline-offset: 2px;
}
.slider.round { border-radius: 20px; }
.slider.round:before { border-radius: 50%; }

.tree-stats-row {
    display: flex;
    justify-content: space-around;
    font-size: 0.85rem;
    margin-bottom: 16px;
    border-bottom: 1px solid #e5e5e7;
    padding-bottom: 10px;
    color: var(--color-text-main);
    font-weight: 500;
}

.tree-viewport {
    background: #fafafa;
    border-radius: 8px;
    border: 1px solid #e5e5e7;
    overflow: auto;
    max-height: 520px;
    position: relative;
    flex-grow: 1; /* Stretch vertical tree container */
}

#treeSvg {
    display: block;
    max-width: 100%;
}

.tree-legend {
    display: flex;
    justify-content: center;
    gap: 16px;
    background: #f5f5f7;
    padding: 10px;
    font-size: 0.75rem;
    border-top: 1px solid #e5e5e7;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.max-dot { background-color: var(--color-green); }
.min-dot { background-color: var(--color-red); }
.chance-dot { background-color: var(--color-blue); }
.prune-dot { background-color: #f5f5f7; border: 1px dashed var(--color-text-muted); }

/* Panel 3: Labs and Charts tabs */
.tabs-header {
    display: flex;
    border-bottom: 1px solid #e5e5e7;
    margin-bottom: 18px;
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    padding: 12px;
    color: var(--color-text-muted);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--color-text-main);
}

.tab-btn.active {
    color: var(--color-blue);
    border-bottom-color: var(--color-blue);
}

.tab-content {
    display: none;
    flex-direction: column;
    gap: 14px;
}

.tab-content.active {
    display: flex;
}

.tab-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.setup-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.setup-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.setup-group label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.custom-input {
    background: #ffffff;
    border: 1px solid var(--border-glass);
    color: var(--color-text-main);
    padding: 6px 10px;
    border-radius: 6px;
    font-family: inherit;
    width: 100px;
    outline: none;
    transition: all 0.2s ease;
}

.custom-input:hover {
    border-color: #86868b;
}

.custom-input:focus {
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.15);
}

.legend-board {
    border-top: 1px solid #e5e5e7;
    padding-top: 12px;
    margin-top: 6px;
}

.legend-board h4 {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 8px;
    font-weight: 600;
}

.legend-board-items {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.board-key-item {
    font-size: 0.78rem;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 500;
}

.key-box {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    display: inline-block;
    border: 1px solid var(--border-glass);
}

.key-treasure { background-color: #e2f6e9; border-color: var(--color-green); }
.key-trap { background-color: #fce8e6; border-color: var(--color-red); }
.key-slippery { background-color: #e8f2fc; border-color: var(--color-blue); }

.chart-container {
    background: #fafafa;
    border-radius: 8px;
    padding: 10px;
    border: 1px solid #e5e5e7;
    height: 180px;
}

.train-status {
    font-size: 0.78rem;
    font-family: monospace;
    text-align: center;
    font-weight: 500;
}

/* Genetic Weights Grid displays */
.weights-display {
    background: #f5f5f7;
    border: 1px solid #e5e5e7;
    border-radius: 8px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.weights-display h4 {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 600;
}

.weights-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.weight-item {
    font-size: 0.78rem;
    font-family: monospace;
    font-weight: 500;
}

/* SVG dynamic elements styling */
.link {
    fill: none;
    stroke: #d2d2d7;
    stroke-width: 1.5px;
    transition: all 0.2s;
}

.link.best-branch {
    stroke: var(--color-green);
    stroke-width: 3.5px;
}

.node-group circle, 
.node-group rect, 
.node-group polygon {
    stroke-width: 2px;
    transition: transform 0.2s;
    cursor: pointer;
}

.node-group:hover circle,
.node-group:hover rect,
.node-group:hover polygon {
    transform: scale(1.15);
}

.node-text {
    font-size: 0.7rem;
    fill: var(--color-text-main);
    font-weight: 500;
}

.node-prob {
    font-size: 0.65rem;
    fill: var(--color-text-muted);
    font-family: monospace;
}

/* Scrollbar tweaks */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: #f5f5f7;
}

::-webkit-scrollbar-thumb {
    background: #d2d2d7;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #86868b;
}

/* Keyboard focus indicators for WCAG 2.1 AA Accessibility */
.custom-select:focus-visible,
.btn:focus-visible,
.depth-slider:focus-visible,
.custom-input:focus-visible,
.tab-btn:focus-visible {
    outline: 2px solid var(--color-blue) !important;
    outline-offset: 2px !important;
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.3) !important;
}

/* Custom labels style in Tree Explorer */
.node-text.node-name {
    font-size: 0.65rem;
    fill: var(--color-text-muted);
    font-weight: 600;
}
.node-text.node-val {
    font-size: 0.75rem;
    fill: var(--color-text-main);
    font-weight: 800;
}