/* Educational Overlay Styles */
/* Extracted from index.html and enhanced for modular architecture */

.educational-overlay {
    position: fixed;
    top: var(--hud-spacing-lg);
    right: var(--hud-spacing-lg);
    width: 400px;
    max-width: calc(100vw - 40px);
    background: var(--hud-bg-secondary);
    border: 2px solid var(--hud-border-secondary);
    border-radius: var(--hud-border-radius);
    color: var(--hud-text-primary);
    z-index: 1500;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    backdrop-filter: var(--hud-backdrop-blur);
    transform: translateX(100%);
    opacity: 0;
    transition: var(--hud-transition);
    pointer-events: none;
}

.educational-overlay.visible {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
}

/* Panel Header */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--hud-spacing-md);
    border-bottom: 1px solid var(--hud-border-secondary);
}

.panel-title {
    color: var(--hud-border-secondary);
    font-size: 16px;
    font-weight: bold;
    margin: 0;
}

.close-educational {
    background: none;
    border: none;
    color: var(--hud-text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: var(--hud-transition);
}

.close-educational:hover {
    color: var(--hud-text-primary);
    background: rgba(255, 255, 255, 0.1);
}

/* Tab Container */
.tab-container {
    padding: var(--hud-spacing-md);
}

.tab-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--hud-spacing-xs);
    margin-bottom: var(--hud-spacing-md);
}

.tab-button {
    background: rgba(74, 144, 226, 0.2);
    border: 1px solid var(--hud-border-secondary);
    color: var(--hud-text-secondary);
    padding: var(--hud-spacing-xs) var(--hud-spacing-sm);
    border-radius: var(--hud-border-radius);
    cursor: pointer;
    font-size: 12px;
    transition: var(--hud-transition);
}

.tab-button:hover {
    background: rgba(74, 144, 226, 0.3);
    color: var(--hud-text-primary);
}

.tab-button.active {
    background: var(--hud-border-secondary);
    color: var(--hud-text-primary);
    border-color: var(--hud-border-secondary);
}

/* Tab Content */
.tab-content {
    max-height: 400px;
    overflow-y: auto;
}

.tab-panel {
    display: none;
    line-height: 1.6;
}

.tab-panel.active {
    display: block;
}

.tab-panel h3 {
    color: var(--hud-border-secondary);
    font-size: 16px;
    margin-bottom: var(--hud-spacing-sm);
}

.tab-panel h4 {
    color: var(--hud-text-primary);
    font-size: 14px;
    margin: var(--hud-spacing-sm) 0 var(--hud-spacing-xs) 0;
}

.tab-panel p {
    color: var(--hud-text-secondary);
    font-size: 13px;
    margin-bottom: var(--hud-spacing-sm);
}

.tab-panel ul {
    color: var(--hud-text-secondary);
    font-size: 13px;
    margin: var(--hud-spacing-xs) 0 var(--hud-spacing-sm) var(--hud-spacing-md);
}

.tab-panel li {
    margin-bottom: var(--hud-spacing-xs);
}

.tab-panel strong {
    color: var(--hud-text-primary);
}

/* Navigation Help */
.navigation-help {
    background: rgba(0, 255, 136, 0.1);
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: var(--hud-border-radius);
    padding: var(--hud-spacing-sm);
    margin: var(--hud-spacing-sm) 0;
}

.navigation-help h4 {
    color: var(--hud-border-primary);
    margin-bottom: var(--hud-spacing-xs);
}

/* Glossary Grid */
.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--hud-spacing-sm);
}

.glossary-item {
    background: rgba(74, 144, 226, 0.1);
    border: 1px solid rgba(74, 144, 226, 0.3);
    border-radius: var(--hud-border-radius);
    padding: var(--hud-spacing-sm);
}

.glossary-item h4 {
    color: var(--hud-border-secondary);
    font-size: 13px;
    margin: 0 0 var(--hud-spacing-xs) 0;
}

.glossary-item p {
    color: var(--hud-text-secondary);
    font-size: 12px;
    margin: 0;
}

/* Instruction Overlay */
.instruction-overlay {
    position: fixed;
    bottom: 380px;
    right: 20px;
    background: rgba(0, 20, 40, 0.9);
    color: white;
    padding: 12px 16px;
    border-radius: 8px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 12px;
    border: 1px solid #4a90e2;
    z-index: 999;
    backdrop-filter: blur(5px);
}

.instruction-overlay kbd {
    background: #4a90e2;
    color: white;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 10px;
    font-family: monospace;
}

/* Responsive Educational Overlay */
@media (max-width: 768px) {
    .educational-overlay {
        width: calc(100vw - 20px);
        top: 10px;
        right: 10px;
        left: 10px;
        width: auto;
    }
    
    .tab-buttons {
        flex-direction: column;
    }
    
    .tab-button {
        text-align: center;
    }
    
    .glossary-grid {
        grid-template-columns: 1fr;
    }
}