/* ========================================
   Mind Map Styles
   ======================================== */

.mindmap-section {
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-2) 50%, var(--dark) 100%);
}

.mindmap-controls {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.mm-btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.1);
    color: var(--gray-light);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.mm-btn:hover,
.mm-btn.active {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--primary-light);
}

.mindmap-container {
    position: relative;
    width: 100%;
    height: 650px;
    border-radius: var(--radius-lg);
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(99, 102, 241, 0.1);
    overflow: hidden;
    margin-bottom: 24px;
}

#mindmapCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.mindmap-nodes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.mm-node {
    position: absolute;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
    z-index: 3;
    user-select: none;
    text-align: center;
}

.mm-node:hover {
    transform: scale(1.1);
    z-index: 10;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.mm-node.center-node {
    padding: 16px 28px;
    font-size: 1rem;
    font-weight: 800;
    border-radius: var(--radius-md);
    z-index: 5;
}

.mm-node.foundation {
    background: rgba(99, 102, 241, 0.2);
    border: 2px solid rgba(99, 102, 241, 0.5);
    color: #a5b4fc;
}

.mm-node.intermediate {
    background: rgba(6, 182, 212, 0.2);
    border: 2px solid rgba(6, 182, 212, 0.5);
    color: #67e8f9;
}

.mm-node.advanced {
    background: rgba(245, 158, 11, 0.2);
    border: 2px solid rgba(245, 158, 11, 0.5);
    color: #fcd34d;
}

.mm-node.mastery {
    background: rgba(239, 68, 68, 0.2);
    border: 2px solid rgba(239, 68, 68, 0.5);
    color: #fca5a5;
}

.mm-node.center-node {
    background: linear-gradient(135deg, rgba(99,102,241,0.3), rgba(6,182,212,0.3));
    border: 2px solid rgba(99, 102, 241, 0.6);
    color: var(--white);
}

.mm-node.hidden-node {
    opacity: 0.15;
    transform: scale(0.85);
    pointer-events: none;
}

.mm-node .node-tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-2);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    min-width: 200px;
    white-space: normal;
    text-align: right;
    font-size: 0.8rem;
    font-weight: 400;
    color: var(--gray-light);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    pointer-events: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    z-index: 100;
}

.mm-node:hover .node-tooltip {
    opacity: 1;
    visibility: visible;
}

.node-tooltip h5 {
    color: var(--white);
    margin-bottom: 4px;
    font-size: 0.85rem;
}

.mindmap-legend {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--gray);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

/* Connection lines glow effect */
.mm-connection-glow {
    filter: drop-shadow(0 0 3px currentColor);
}

@media (max-width: 768px) {
    .mindmap-container {
        height: 500px;
    }
    
    .mm-node {
        font-size: 0.7rem;
        padding: 6px 12px;
    }
    
    .mm-node.center-node {
        font-size: 0.8rem;
        padding: 10px 18px;
    }
}

@media (max-width: 480px) {
    .mindmap-container {
        height: 400px;
    }
}

/* ========================================
   Light Theme — Mindmap
   ======================================== */
body.light-theme .mindmap-section {
    background: #f8fafc;
}

body.light-theme .mindmap-container {
    background: rgba(255, 255, 255, 0.6);
    border-color: rgba(99, 102, 241, 0.1);
}

body.light-theme .mm-controls button {
    background: rgba(255, 255, 255, 0.85);
    border-color: rgba(99, 102, 241, 0.1);
    color: #475569;
}

body.light-theme .mm-controls button.active,
body.light-theme .mm-controls button:hover {
    background: rgba(99, 102, 241, 0.08);
    color: #6366f1;
    border-color: rgba(99, 102, 241, 0.25);
}