/* Merge K Sorted Lists - Algorithm-specific styles */

/* Fix button alignment with textarea */
.controls {
    align-items: flex-start;
}

/* Textarea input */
.textarea-group {
    flex-direction: column;
    align-items: flex-start;
}

.textarea-group textarea {
    width: 200px;
    min-height: 80px;
    padding: 10px;
    background: #1e1e3f;
    border: 1px solid #3a3a5a;
    border-radius: 5px;
    color: #fff;
    font-family: monospace;
    font-size: 14px;
    resize: vertical;
}

.textarea-group textarea:focus {
    outline: none;
    border-color: #00d9ff;
}

/* Lists Container */
.lists-wrapper {
    position: relative;
    padding: 20px;
    min-height: 200px;
    overflow-x: auto;
}

.lists-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    min-height: 150px;
}

/* Single List Row */
.list-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.list-row.inactive {
    opacity: 0.4;
}

.list-row.active {
    background: rgba(0, 217, 255, 0.1);
    border: 1px solid rgba(0, 217, 255, 0.3);
}

.list-row.merging {
    background: rgba(255, 170, 0, 0.1);
    border: 1px solid rgba(255, 170, 0, 0.3);
}

.list-row.merged {
    background: rgba(78, 205, 196, 0.1);
    border: 1px solid rgba(78, 205, 196, 0.3);
}

.list-row.hidden {
    display: none;
}

/* List Label */
.list-label {
    min-width: 60px;
    font-size: 12px;
    font-weight: bold;
    color: #888;
    text-align: right;
}

.list-row.active .list-label {
    color: #00d9ff;
}

.list-row.merging .list-label {
    color: #ffaa00;
}

.list-row.merged .list-label {
    color: #4ecdc4;
}

/* Linked List within a row */
.linked-list-container {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
}

/* Individual Node */
.linked-list-node {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0;
}

.node-box {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #2a2a4a 0%, #1e1e3f 100%);
    border: 2px solid #444;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    color: #fff;
    transition: all 0.3s ease;
    position: relative;
}

.node-index {
    position: absolute;
    bottom: -18px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: #666;
}

.node-pointer {
    font-size: 18px;
    color: #555;
    padding: 0 2px;
    transition: all 0.3s ease;
}

/* Node States */
.node-box.active {
    border-color: #00d9ff;
    box-shadow: 0 0 10px rgba(0, 217, 255, 0.4);
}

.node-box.comparing {
    border-color: #ffaa00;
    box-shadow: 0 0 15px rgba(255, 170, 0, 0.5);
    animation: pulse 0.6s ease-in-out infinite;
}

.node-box.selected {
    border-color: #4ecdc4;
    background: linear-gradient(135deg, #2a4a4a 0%, #1a3a3a 100%);
    box-shadow: 0 0 12px rgba(78, 205, 196, 0.5);
}

.node-box.merged {
    border-color: #4ecdc4;
    background: linear-gradient(135deg, #1a3a2a 0%, #0a2a1a 100%);
}

.node-box.left-ptr {
    border-color: #5b8def;
    box-shadow: 0 0 12px rgba(91, 141, 239, 0.5);
}

.node-box.right-ptr {
    border-color: #ffd700;
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

/* Pointer Labels */
.ptr-label-container {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.ptr-label {
    font-size: 10px;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 3px;
    white-space: nowrap;
}

.ptr-label.left {
    background: #5b8def;
    color: #1a1a2e;
}

.ptr-label.right {
    background: #ffd700;
    color: #1a1a2e;
}

.ptr-arrow {
    font-size: 10px;
}

.ptr-arrow.left {
    color: #5b8def;
}

.ptr-arrow.right {
    color: #ffd700;
}

/* Empty list indicator */
.empty-list {
    color: #666;
    font-style: italic;
    font-size: 14px;
}

/* Result Row */
.list-row.result {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px dashed #3a3a5a;
}

.list-row.result .list-label {
    color: #4ecdc4;
    font-size: 14px;
}

/* Info Panel */
.info-panel {
    grid-template-columns: repeat(4, 1fr);
}

.info-box.phase-box h3 {
    color: #00d9ff;
}

.info-box.pair-box h3 {
    color: #ffaa00;
}

.info-box.depth-box h3 {
    color: #ffd700;
}

.info-box.k-box h3 {
    color: #4ecdc4;
}

.pointer-desc {
    color: #888;
    font-size: 11px;
    margin-top: 5px;
}

/* Merge Info Panel */
.merge-info {
    background: #2a2a4a;
    border-radius: 8px;
    padding: 15px;
    margin: 15px 0;
    border: 1px solid #3a3a5a;
}

.merge-title {
    color: #00d9ff;
    font-weight: bold;
    margin-bottom: 10px;
    text-align: center;
}

.merge-pointers {
    display: flex;
    justify-content: center;
    gap: 40px;
}

.merge-ptr {
    display: flex;
    align-items: center;
    gap: 8px;
}

.merge-ptr .ptr-label {
    font-size: 14px;
    color: #888;
}

.merge-ptr .ptr-value {
    font-size: 18px;
    font-weight: bold;
    padding: 5px 15px;
    border-radius: 5px;
}

.left-merge-ptr .ptr-value {
    background: #5b8def;
    color: #1a1a2e;
}

.right-merge-ptr .ptr-value {
    background: #ffd700;
    color: #1a1a2e;
}

/* Legend Colors */
.legend-color.default-color {
    background: linear-gradient(135deg, #2a2a4a 0%, #1e1e3f 100%);
    border: 2px solid #444;
}

.legend-color.active-color {
    background: rgba(0, 217, 255, 0.2);
    border: 2px solid #00d9ff;
}

.legend-color.comparing-color {
    background: linear-gradient(135deg, #3a3a2a 0%, #2a2a1a 100%);
    border: 2px solid #ffaa00;
    box-shadow: 0 0 6px rgba(255, 170, 0, 0.3);
}

.legend-color.merged-color {
    background: linear-gradient(135deg, #1a3a2a 0%, #0a2a1a 100%);
    border: 2px solid #4ecdc4;
}

/* Divider between original lists and result */
.lists-divider {
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, #3a3a5a, transparent);
    margin: 15px 0;
}

/* Responsive */
@media (max-width: 768px) {
    .info-panel {
        grid-template-columns: repeat(2, 1fr);
    }

    .node-box {
        width: 40px;
        height: 40px;
        font-size: 14px;
    }

    .textarea-group textarea {
        width: 150px;
    }

    .merge-pointers {
        flex-direction: column;
        gap: 10px;
    }

    .list-label {
        min-width: 50px;
        font-size: 11px;
    }
}

@media (max-width: 480px) {
    .info-panel {
        grid-template-columns: 1fr;
    }
}