/*
================================================================
   TECH ROADMAP - ROADMAP & MIND MAP STYLING
================================================================
   Contains styles for visual column layouts, interactive nodes,
   SVG connector links, progress tracking, and the slide-over
   details panel. Fully responsive for desktop, tablet, and mobile.
================================================================
*/

/* ==========================================
   1. MIND MAP LAYOUT & WORKSPACE
   ========================================== */
.mindmap-container {
    position: relative;
    display: flex;
    justify-content: space-between;
    gap: 60px;
    padding: 30px 10px;
    width: 100%;
    min-height: 500px;
    /* Permits scrollbars on smaller viewports */
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

/* Custom scrollbars for mindmap panel */
.mindmap-container::-webkit-scrollbar {
    height: 8px;
}
.mindmap-container::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 10px;
}
.mindmap-container::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 10px;
}
.mindmap-container::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* SVG Vector Canvas Background */
.mindmap-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* User clicks pass through SVG to click nodes */
    z-index: 1;
}

/* SVG Connection Lines */
.mindmap-line {
    fill: none;
    stroke: var(--border-color);
    stroke-width: 2.5;
    transition: stroke var(--transition-normal), stroke-width var(--transition-normal);
}

.mindmap-line.active {
    stroke: var(--accent-primary);
    stroke-width: 3.5;
    filter: drop-shadow(0 0 3px var(--accent-glow));
}

/* ==========================================
   2. STAGE COLUMNS & HEADER BAR
   ========================================== */
.mindmap-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 24px;
    min-width: 280px;
    z-index: 2; /* Sits above SVG lines */
    position: relative;
}

.column-header {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 1.15rem;
    padding: 10px 16px;
    border-radius: var(--border-radius-sm);
    text-align: center;
    border: 1px solid var(--border-color);
    letter-spacing: 0.5px;
}

/* Headers background colors based on stage levels */
.column-header.level-beginner {
    background-color: rgba(16, 185, 129, 0.08);
    color: #10b981;
    border-color: rgba(16, 185, 129, 0.2);
}

.column-header.level-intermediate {
    background-color: rgba(245, 158, 11, 0.08);
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.2);
}

.column-header.level-advanced {
    background-color: rgba(99, 102, 241, 0.08);
    color: #6366f1;
    border-color: rgba(99, 102, 241, 0.2);
}

.column-nodes {
    display: flex;
    flex-direction: column;
    gap: 20px;
    justify-content: center;
    flex-grow: 1;
}

/* ==========================================
   3. MIND MAP NODE CARDS
   ========================================== */
.mindmap-node {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    position: relative;
    user-select: none;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

/* Zoom Hover Animation */
.mindmap-node:hover {
    transform: scale(1.04);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md), var(--glow-shadow);
}

/* Selected state highlight on click */
.mindmap-node.active-node {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Completed node states */
.mindmap-node.completed-node {
    border-color: #10b981;
}
.mindmap-node.completed-node:hover {
    box-shadow: var(--shadow-md), 0 0 16px rgba(16, 185, 129, 0.2);
}

/* Node Custom Checkbox */
.node-checkbox {
    width: 20px;
    height: 20px;
    border-radius: 4px;
    border: 2px solid var(--border-color);
    cursor: pointer;
    appearance: none; /* Override browser inputs */
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast), border-color var(--transition-fast);
}

.node-checkbox:checked {
    background-color: #10b981;
    border-color: #10b981;
}

.node-checkbox:checked::after {
    content: '✓';
    color: #ffffff;
    font-size: 0.85rem;
    font-weight: 700;
}

.node-label {
    font-size: 0.96rem;
    font-weight: 600;
    color: var(--text-primary);
    flex-grow: 1;
}

.node-info-trigger {
    font-size: 1rem;
    color: var(--text-muted);
    opacity: 0.6;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.mindmap-node:hover .node-info-trigger {
    opacity: 1;
    transform: scale(1.2);
    color: var(--accent-primary);
}

/* ==========================================
   4. SIDE DETAIL DRAWER PANEL
   ========================================= */
.detail-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 420px;
    height: 100vh;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    z-index: 1050; /* Sits above standard headers */
    padding: 80px 32px 40px;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    /* Slide transition overlay */
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.detail-drawer.open {
    transform: translateX(0);
}

.drawer-close-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    font-size: 1.5rem;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.drawer-close-btn:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}

.drawer-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
    align-self: flex-start;
    margin-bottom: 12px;
}

/* Color codes inside the drawer details */
.drawer-badge.level-beginner { background-color: rgba(16, 185, 129, 0.12); color: #10b981; }
.drawer-badge.level-intermediate { background-color: rgba(245, 158, 11, 0.12); color: #f59e0b; }
.drawer-badge.level-advanced { background-color: rgba(99, 102, 241, 0.12); color: #6366f1; }

.drawer-title {
    font-size: 1.6rem;
    font-family: 'Outfit', sans-serif;
    line-height: 1.3;
    margin-bottom: 16px;
}

.drawer-section {
    margin-bottom: 28px;
}

.drawer-section h3 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

.drawer-section p {
    font-size: 0.98rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Resources link listing */
.resources-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.resources-list li a {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.resources-list li a:hover {
    border-color: var(--accent-primary);
    background-color: var(--bg-secondary);
}

/* Add custom icon before link text */
.resources-list li a::before {
    content: '🔗';
    margin-right: 8px;
    font-size: 0.95rem;
}

/* ==========================================
   5. RESPONSIVE LAYOUT BREAKPOINTS
   ========================================== */

/* Large Tablets Landscape / Portrait (max-width: 1024px) */
@media (max-width: 1024px) {
    .mindmap-container {
        /* Keep grid side-by-side but enable swipe scrollbars */
        justify-content: flex-start;
        gap: 40px;
    }
}

/* Mobile Devices (max-width: 768px) */
@media (max-width: 768px) {
    .mindmap-container {
        /* Flatten 3 columns grid into single vertical stacking column */
        flex-direction: column;
        gap: 40px;
        overflow-x: hidden; /* Scroll vertical instead */
        padding: 10px 0;
    }

    .mindmap-column {
        width: 100%;
        min-width: 100%;
    }

    /* Hide background vector connections (drawn SVGs look cluttered when stacked) */
    .mindmap-svg {
        display: none !important;
    }

    /* Stack cards simple vertically */
    .column-nodes {
        gap: 16px;
    }

    .mindmap-node {
        padding: 14px 16px;
    }

    /* Full-width Details Drawer on Phones */
    .detail-drawer {
        width: 100%;
        padding: 70px 24px 30px;
    }
    
    .progress-tracker-bar {
        padding: 12px 16px;
    }
}