/* KNN Specific Styles */
.legend {
    display: flex;
    gap: 20px;
    margin-top: 20px;
    padding: 15px;
    background: var(--sidebar-bg);
    border-radius: 10px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--text-primary);
}

.info-box {
    background: var(--step-info-bg);
    border-left: 4px solid #2196F3;
    padding: 15px;
    margin-top: 20px;
    border-radius: 5px;
}

.info-box h4 {
    color: #2196F3;
    margin-bottom: 10px;
}

.info-box ol {
    padding-left: 20px;
    line-height: 1.8;
}

.result-box {
    background: var(--card-bg);
    border: 2px solid var(--accent);
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
    display: none;
}

.result-box.show {
    display: block;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-box h4 {
    color: #667eea;
    margin-bottom: 10px;
    font-size: 1.3em;
}

.result-details {
    background: var(--bg-color);
    padding: 15px;
    border-radius: 8px;
    margin-top: 10px;
}

.calculation-box {
    background: var(--step-info-bg);
    border: 2px solid #ffd93d;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
    display: none;
}

.calculation-box.show {
    display: block;
    animation: slideIn 0.3s ease-out;
}

.calculation-box h4 {
    color: #f59f00;
    margin-bottom: 15px;
    font-size: 1.2em;
}

.calc-step {
    background: var(--card-bg);
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    border-left: 4px solid #ffd93d;
}

.calc-step h5 {
    color: #f59f00;
    margin-bottom: 10px;
}

.formula {
    background: var(--sidebar-bg);
    padding: 10px;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    margin: 10px 0;
    overflow-x: auto;
}

.toggle-calc {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
}

.toggle-calc input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.toggle-calc label {
    cursor: pointer;
    font-weight: 600;
}

.description-box {
    background: var(--step-info-bg);
    border-left: 4px solid #4ecdc4;
    padding: 20px;
    margin: 20px 30px;
    border-radius: 5px;
}

.description-box h4 {
    color: #4ecdc4;
    margin-bottom: 10px;
}

.description-box p {
    line-height: 1.8;
    color: var(--text-primary);
}

.description-box ul {
    margin-left: 20px;
    margin-top: 5px;
}

.neighbor-list {
    list-style: none;
    padding: 0;
}

.neighbor-list li {
    padding: 8px;
    margin: 5px 0;
    background: var(--sidebar-bg);
    border-radius: 5px;
    border-left: 3px solid var(--accent);
}

.mode-selector {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
}

.mode-btn {
    flex: 1;
    padding: 10px;
    border: 2px solid var(--accent);
    background: var(--card-bg);
    color: var(--accent);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
}

.mode-btn.active {
    background: var(--accent);
    color: white;
}

.mode-btn:hover {
    transform: translateY(-2px);
}

#testModeBtn.active {
    background: #ffd93d;
    color: #333;
    border-color: #ffd93d;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 217, 61, 0.7);
    }

    50% {
        box-shadow: 0 0 0 10px rgba(255, 217, 61, 0);
    }
}

/* Canvas Responsive */
canvas {
    max-width: 100%;
    height: auto;
    display: block;
    touch-action: none;
}

/* Mobile Optimizations */
@media (max-width: 768px) {

    /* Description Box - Compact */
    .description-box {
        margin: 10px 20px;
        padding: 15px;
        font-size: 0.85rem;
    }

    .description-box h4 {
        font-size: 0.95rem;
    }

    .description-box ul {
        font-size: 0.8rem;
        padding-left: 15px;
    }

    /* Canvas */
    .main-area canvas {
        width: 100% !important;
        height: auto !important;
        max-height: 60vh;
    }

    /* Result Box */
    .result-box {
        font-size: 0.85rem;
        padding: 15px;
    }

    .result-box h4 {
        font-size: 1.1em;
    }

    /* Calculation Box */
    .calculation-box {
        font-size: 0.8rem;
        padding: 15px;
    }

    .calc-step {
        padding: 10px;
        font-size: 0.8rem;
    }

    /* Info Box */
    .info-box {
        padding: 10px;
        font-size: 0.8rem;
    }

    .info-box ol {
        padding-left: 15px;
        font-size: 0.75rem;
    }

    /* Legend */
    .legend {
        flex-direction: column;
        gap: 8px;
        font-size: 0.8rem;
    }
}

/* Extra Small Devices */
@media (max-width: 480px) {
    .description-box {
        margin: 10px;
        padding: 10px;
    }

    .main-area canvas {
        max-height: 50vh;
    }

    .result-box,
    .calculation-box {
        font-size: 0.75rem;
        padding: 10px;
    }

    .control-item label {
        font-size: 0.8rem;
    }

    .value-display {
        font-size: 0.75rem;
        padding: 3px 10px;
    }
}

/* Landscape Mode */
@media (max-width: 768px) and (orientation: landscape) {
    .main-area canvas {
        max-height: 70vh;
    }

    .description-box {
        margin: 5px 10px;
        padding: 10px;
    }
}