/* Enhanced Brain Visualization Styles */

/* Interactive Brain Model Container */
.interactive-brain-container {
    position: relative;
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
    border-radius: 2rem;
}

.brain-model-svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 15px 35px rgba(59, 130, 246, 0.2));
    transition: all 0.3s ease-in-out;
}

.brain-model-svg:hover {
    filter: drop-shadow(0 20px 40px rgba(59, 130, 246, 0.3));
    transform: scale(1.02);
}

/* Brain Regions */
.brain-region {
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    stroke-width: 1;
    stroke: rgba(255, 255, 255, 0.3);
}

.brain-region:hover {
    stroke-width: 2;
    stroke: #3b82f6;
    filter: brightness(1.2) saturate(1.3);
    transform-origin: center;
    animation: regionPulse 0.6s ease-in-out;
}

.brain-region.active {
    stroke-width: 3;
    stroke: #fbbf24;
    filter: brightness(1.3) saturate(1.5);
}

/* Brain Region Labels */
.region-label {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    fill: #1e40af;
    text-anchor: middle;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    pointer-events: none;
}

.brain-region:hover + .region-label,
.brain-region.active + .region-label {
    opacity: 1;
}

/* Neural Connections */
.neural-connection {
    stroke: #60a5fa;
    stroke-width: 1;
    opacity: 0.4;
    stroke-dasharray: 5, 5;
    animation: connectionFlow 3s linear infinite;
}

.neural-connection.active {
    opacity: 0.8;
    stroke-width: 2;
    stroke: #fbbf24;
    animation: activeConnectionFlow 1.5s linear infinite;
}

/* Neurons */
.neuron {
    fill: #fbbf24;
    opacity: 0.7;
    animation: neuronIdle 4s ease-in-out infinite;
}

.neuron.firing {
    animation: neuronFiring 0.8s ease-out;
}

.neuron.active {
    fill: #f59e0b;
    opacity: 1;
    animation: neuronActive 2s ease-in-out infinite;
}

/* Brain Information Panel */
.brain-info-panel {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 300px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s ease-in-out;
    pointer-events: none;
    z-index: 10;
}

.brain-info-panel.visible {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
}

.brain-info-panel h3 {
    color: #1e40af;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.brain-info-panel p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 1rem;
}

.brain-info-panel .functions-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.brain-info-panel .functions-list li {
    color: #475569;
    font-size: 0.85rem;
    padding: 0.25rem 0;
    border-left: 3px solid #3b82f6;
    padding-left: 0.75rem;
    margin-bottom: 0.5rem;
    background: rgba(59, 130, 246, 0.05);
    border-radius: 0 0.25rem 0.25rem 0;
}

/* Understanding Brain Section */
.understanding-brain-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.understanding-brain-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="brain-dots" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%233b82f6" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23brain-dots)"/></svg>') repeat;
    opacity: 0.3;
    z-index: 0;
}

.brain-section-content {
    position: relative;
    z-index: 1;
}

/* Brain Activity Visualization */
.brain-activity-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
    align-items: center;
}

.brain-waves-display {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 1rem;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.brain-waves-display h4 {
    color: #1e40af;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-align: center;
}

.wave-visualization {
    height: 120px;
    position: relative;
    overflow: hidden;
    background: #f8fafc;
    border-radius: 0.5rem;
    border: 2px solid #e2e8f0;
}

.brain-wave-line {
    stroke-width: 2;
    fill: none;
    stroke-linecap: round;
}

.alpha-wave {
    stroke: #3b82f6;
    animation: waveAlpha 3s ease-in-out infinite;
}

.beta-wave {
    stroke: #10b981;
    animation: waveBeta 2s ease-in-out infinite;
}

.theta-wave {
    stroke: #f59e0b;
    animation: waveTheta 4s ease-in-out infinite;
}

.delta-wave {
    stroke: #ef4444;
    animation: waveDelta 5s ease-in-out infinite;
}

/* Interactive Brain Functions */
.brain-functions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.function-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(59, 130, 246, 0.1);
    cursor: pointer;
    transition: all 0.3s ease-in-out;
    position: relative;
    overflow: hidden;
}

.function-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transition: left 0.5s ease-in-out;
}

.function-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.15);
    border-color: #3b82f6;
}

.function-card:hover::before {
    left: 100%;
}

.function-card .icon {
    width: 3rem;
    height: 3rem;
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
    font-size: 1.5rem;
}

.function-card h4 {
    color: #1e40af;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.function-card p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Animations */
@keyframes regionPulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

@keyframes connectionFlow {
    0% {
        stroke-dashoffset: 10;
    }
    100% {
        stroke-dashoffset: 0;
    }
}

@keyframes activeConnectionFlow {
    0% {
        stroke-dashoffset: 10;
        opacity: 0.8;
    }
    50% {
        opacity: 1;
    }
    100% {
        stroke-dashoffset: 0;
        opacity: 0.8;
    }
}

@keyframes neuronIdle {
    0%, 100% {
        opacity: 0.7;
        transform: scale(1);
    }
    50% {
        opacity: 0.9;
        transform: scale(1.1);
    }
}

@keyframes neuronFiring {
    0% {
        opacity: 0.7;
        transform: scale(1);
        fill: #fbbf24;
    }
    50% {
        opacity: 1;
        transform: scale(1.5);
        fill: #ffffff;
    }
    100% {
        opacity: 0.7;
        transform: scale(1);
        fill: #fbbf24;
    }
}

@keyframes neuronActive {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2);
    }
}

@keyframes waveAlpha {
    0%, 100% {
        stroke-dasharray: 5, 5;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 10, 2;
        stroke-dashoffset: 5;
    }
}

@keyframes waveBeta {
    0%, 100% {
        stroke-dasharray: 2, 3;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 4, 1;
        stroke-dashoffset: 3;
    }
}

@keyframes waveTheta {
    0%, 100% {
        stroke-dasharray: 8, 4;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 12, 2;
        stroke-dashoffset: 6;
    }
}

@keyframes waveDelta {
    0%, 100% {
        stroke-dasharray: 15, 5;
        stroke-dashoffset: 0;
    }
    50% {
        stroke-dasharray: 20, 2;
        stroke-dashoffset: 10;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .interactive-brain-container {
        padding: 1rem;
    }
    
    .brain-info-panel {
        position: static;
        width: 100%;
        margin-top: 1rem;
        transform: none;
        opacity: 1;
    }
    
    .brain-activity-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .brain-functions-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .function-card {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .understanding-brain-section {
        padding: 2rem 0;
    }
    
    .brain-waves-display {
        padding: 1rem;
    }
    
    .wave-visualization {
        height: 80px;
    }
}