/* Advanced Hierarchical Roadmap Visualization Styles */

/* 1. Full Screen Modal */
.full-screen-roadmap-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-body);
    z-index: 9999;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 60px 20px;
    box-sizing: border-box;
}

.roadmap-modal-close {
    position: absolute;
    top: 30px;
    right: 40px;
    font-size: 32px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s;
}

.roadmap-modal-close:hover {
    color: var(--text-primary);
}

/* 2. Hierarchical Layout adjustments */
.roadmap-nodes-group {
    display: flex;
    flex-direction: column; /* Stack vertically instead of flex-wrap */
    gap: 0; /* Removing gap to handle nested spacing with padding */
    width: 100% !important;
}

.roadmap-sub-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding-top: 16px;
    padding-bottom: 24px;
    position: relative;
    padding-left: 40px;
}

/* Orthogonal SVG-like Line connecting sub-items to topic */
.roadmap-sub-container::before {
    content: '';
    position: absolute;
    top: -10px;
    bottom: 30px;
    left: 15px;
    width: 2px;
    background: var(--accent-sage);
    opacity: 0.5;
    border-radius: 2px;
}

/* Branching lines from the vertical spine to each sub-item */
.node-type-todo::before,
.node-type-resource::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -25px;
    width: 20px;
    height: 2px;
    background: var(--accent-sage);
    opacity: 0.5;
}

/* 3. Distinct Node Styling */

/* Main Topic */
.roadmap-node.node-type-topic {
    background: rgba(30, 41, 59, 0.9);
    border: 2px solid var(--accent-sage);
    border-radius: 12px;
    padding: 16px 24px;
    font-size: 20px;
    font-weight: 700;
    text-align: center;
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.2);
    align-self: flex-start;
    position: relative;
    z-index: 2;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.roadmap-level.align-right .roadmap-node.node-type-topic {
    align-self: flex-start; /* Maintain left alignment inside the group */
}

.roadmap-node.node-type-topic:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
    border-color: #34d399;
}

/* Subtopic / Todo */
.roadmap-node.node-type-todo {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
    max-width: 400px;
    cursor: pointer;
    /* Animation initial state */
    opacity: 0;
    transform: translateX(-20px);
    animation: slideIn 0.5s forwards ease-out;
}

.roadmap-node.node-type-todo:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.todo-checkbox {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    flex-shrink: 0;
    transition: all 0.2s;
}

.roadmap-node.node-type-todo:hover .todo-checkbox {
    border-color: var(--accent-sage);
}

/* Resource Button */
.roadmap-node.node-type-resource {
    background: rgba(245, 158, 11, 0.1); /* Yellow tint */
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 8px;
    padding: 12px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    font-size: 14px;
    font-weight: 600;
    color: #fcd34d;
    position: relative;
    max-width: 400px;
    cursor: pointer;
    opacity: 0;
    transform: translateX(-20px);
    animation: slideIn 0.5s forwards ease-out;
}

.roadmap-node.node-type-resource:hover {
    background: rgba(245, 158, 11, 0.2);
    border-color: rgba(245, 158, 11, 0.6);
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.2);
}

/* Tags */
.resource-tag {
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 12px;
    text-transform: uppercase;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.tag-course { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.tag-article { background: rgba(167, 139, 250, 0.2); color: #a78bfa; }
.tag-book { background: rgba(56, 189, 248, 0.2); color: #38bdf8; }
.tag-resource { background: rgba(255, 255, 255, 0.1); color: #ccc; }

/* Status Overrides */
.roadmap-node.status-completed .todo-checkbox {
    background: var(--accent-sage);
    border-color: var(--accent-sage);
    position: relative;
}
.roadmap-node.status-completed .todo-checkbox::after {
    content: '✓';
    position: absolute;
    color: #0f172a;
    font-size: 12px;
    font-weight: 900;
    top: -1px;
    left: 3px;
}

/* Animations */
@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Alignment fixes for the alternating sides */
.roadmap-level.align-right .roadmap-nodes-group {
    align-items: flex-end;
}

.roadmap-level.align-right .roadmap-sub-container {
    align-items: flex-end;
    padding-left: 0;
    padding-right: 40px;
}

.roadmap-level.align-right .roadmap-sub-container::before {
    left: auto;
    right: 15px;
}

.roadmap-level.align-right .node-type-todo::before,
.roadmap-level.align-right .node-type-resource::before {
    left: auto;
    right: -25px;
}

.roadmap-level.align-right .node-type-todo,
.roadmap-level.align-right .node-type-resource {
    transform: translateX(20px); /* Slide from right */
}