/* ==========================================================================
   Black Box Reveal - "How It Works" Component
   A dramatic visualization of data flowing through a proprietary AI engine
   ========================================================================== */

/* Section Container */
.black-box-section {
    position: relative;
    padding: 5rem 2rem;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.black-box-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        linear-gradient(rgba(16, 185, 129, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16, 185, 129, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* Section Header */
.black-box-section .section-header--tech {
    position: relative;
    z-index: 2;
    margin-bottom: 4rem;
}

/* Main Container */
.black-box-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 400px;
}

/* ==========================================================================
   Input Data Stream (Left Side)
   ========================================================================== */

.data-input-stream {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 200px;
    position: relative;
    z-index: 2;
}

.data-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    position: relative;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.4s ease;
}

.data-label.active {
    opacity: 1;
    transform: translateX(0);
}

.data-label::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, var(--border-color), transparent);
    transform: translateY(-50%);
}

.data-label i {
    color: var(--cta-primary);
    font-size: 0.9rem;
    width: 20px;
    text-align: center;
}

/* Staggered animation delays */
.data-label:nth-child(1) { transition-delay: 0.1s; }
.data-label:nth-child(2) { transition-delay: 0.2s; }
.data-label:nth-child(3) { transition-delay: 0.3s; }
.data-label:nth-child(4) { transition-delay: 0.4s; }

/* Data particle trail */
.data-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--cta-primary);
    border-radius: 50%;
    opacity: 0;
    filter: blur(1px);
}

.black-box-container.in-view .data-particle {
    animation: particleFlow 3s ease-in-out infinite;
}

.data-particle:nth-child(1) { top: 15%; animation-delay: 0s; }
.data-particle:nth-child(2) { top: 35%; animation-delay: 0.5s; }
.data-particle:nth-child(3) { top: 55%; animation-delay: 1s; }
.data-particle:nth-child(4) { top: 75%; animation-delay: 1.5s; }

@keyframes particleFlow {
    0% {
        opacity: 0;
        transform: translateX(0);
    }
    10% {
        opacity: 0.8;
    }
    50% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.2;
    }
    100% {
        opacity: 0;
        transform: translateX(calc(100px + 15vw));
    }
}

/* ==========================================================================
   The Intelligence Core (Center - The Black Box)
   ========================================================================== */

.intelligence-core {
    position: relative;
    width: 280px;
    height: 320px;
    background: linear-gradient(145deg, #1a1a2e 0%, #0f0f1a 100%);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 3;
    overflow: hidden;
    transition: all 0.4s ease;
}

/* Outer glow */
.intelligence-core::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg,
        rgba(16, 185, 129, 0.3) 0%,
        rgba(16, 185, 129, 0.1) 25%,
        rgba(16, 185, 129, 0.05) 50%,
        rgba(16, 185, 129, 0.1) 75%,
        rgba(16, 185, 129, 0.3) 100%
    );
    border-radius: 18px;
    z-index: -1;
    opacity: 0.6;
    transition: opacity 0.4s ease;
}

/* Inner border glow */
.intelligence-core::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 16px;
    pointer-events: none;
}

.intelligence-core:hover::before {
    opacity: 1;
}

.intelligence-core:hover {
    transform: scale(1.02);
    box-shadow: 0 0 60px rgba(16, 185, 129, 0.2);
}

/* Core label */
.core-label {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: rgba(16, 185, 129, 0.8);
    text-transform: uppercase;
    margin-bottom: 2rem;
    position: relative;
    z-index: 2;
}

/* Neural network visualization */
.neural-mesh {
    position: relative;
    width: 160px;
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Neural nodes */
.neural-node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: rgba(16, 185, 129, 0.6);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.4);
    transition: all 0.3s ease;
}

.black-box-container.in-view .neural-node {
    animation: nodePulse 2s ease-in-out infinite;
}

/* Node positions - hexagonal pattern */
.neural-node:nth-child(1) { top: 50%; left: 50%; transform: translate(-50%, -50%); }
.neural-node:nth-child(2) { top: 15%; left: 50%; transform: translateX(-50%); animation-delay: 0.2s; }
.neural-node:nth-child(3) { top: 30%; left: 85%; animation-delay: 0.4s; }
.neural-node:nth-child(4) { top: 70%; left: 85%; animation-delay: 0.6s; }
.neural-node:nth-child(5) { top: 85%; left: 50%; transform: translateX(-50%); animation-delay: 0.8s; }
.neural-node:nth-child(6) { top: 70%; left: 15%; animation-delay: 1s; }
.neural-node:nth-child(7) { top: 30%; left: 15%; animation-delay: 1.2s; }

/* Center node is larger */
.neural-node:nth-child(1) {
    width: 20px;
    height: 20px;
    background: var(--cta-primary);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.6);
}

@keyframes nodePulse {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1.2);
    }
}

.neural-node:not(:nth-child(1)) {
    animation-name: nodePulseOuter;
}

@keyframes nodePulseOuter {
    0%, 100% {
        opacity: 0.4;
        box-shadow: 0 0 15px rgba(16, 185, 129, 0.3);
    }
    50% {
        opacity: 0.8;
        box-shadow: 0 0 25px rgba(16, 185, 129, 0.5);
    }
}

/* Connection lines (SVG overlay) */
.neural-connections {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.neural-connections line {
    stroke: rgba(16, 185, 129, 0.2);
    stroke-width: 1;
    transition: all 0.3s ease;
}

.black-box-container.in-view .neural-connections line {
    animation: lineGlow 3s ease-in-out infinite;
}

@keyframes lineGlow {
    0%, 100% { stroke: rgba(16, 185, 129, 0.15); }
    50% { stroke: rgba(16, 185, 129, 0.4); }
}

/* Processing indicator */
.processing-indicator {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.65rem;
    color: rgba(16, 185, 129, 0.6);
    margin-top: 2rem;
    letter-spacing: 0.1em;
    position: relative;
    z-index: 2;
}

.processing-indicator::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--cta-primary);
    border-radius: 50%;
    margin-right: 0.5rem;
    animation: processingBlink 1.5s ease-in-out infinite;
}

@keyframes processingBlink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* ==========================================================================
   Output Prediction Stream (Right Side)
   ========================================================================== */

.prediction-output-stream {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    width: 240px;
    position: relative;
    z-index: 2;
}

/* Prediction card output */
.prediction-output-card {
    width: 100%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.25rem;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.5s ease;
    transition-delay: 0.8s;
}

.black-box-container.in-view .prediction-output-card {
    opacity: 1;
    transform: translateX(0);
}

.prediction-output-card::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 50%;
    width: 20px;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(16, 185, 129, 0.3));
    transform: translateY(-50%);
}

/* Confidence badge */
.output-confidence-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.35rem 0.75rem;
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 20px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--cta-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
}

.output-confidence-badge i {
    font-size: 0.65rem;
}

/* Mock prediction content */
.output-matchup {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.output-pick {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.output-pick strong {
    color: var(--cta-primary);
}

/* Output metrics */
.output-metrics {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.output-metric {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0;
    transform: translateX(10px);
    transition: all 0.4s ease;
}

.black-box-container.in-view .output-metric:nth-child(1) {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 1.2s;
}
.black-box-container.in-view .output-metric:nth-child(2) {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 1.4s;
}
.black-box-container.in-view .output-metric:nth-child(3) {
    opacity: 1;
    transform: translateX(0);
    transition-delay: 1.6s;
}

.output-metric i {
    color: var(--cta-primary);
    width: 16px;
    text-align: center;
    font-size: 0.7rem;
}

/* ==========================================================================
   Flow Arrows
   ========================================================================== */

.flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    color: rgba(16, 185, 129, 0.3);
    font-size: 1.5rem;
    position: relative;
}

.flow-arrow i {
    animation: arrowPulse 2s ease-in-out infinite;
}

.flow-arrow.arrow-left i {
    animation-delay: 0s;
}

.flow-arrow.arrow-right i {
    animation-delay: 1s;
}

@keyframes arrowPulse {
    0%, 100% {
        opacity: 0.3;
        transform: translateX(0);
    }
    50% {
        opacity: 0.8;
        transform: translateX(5px);
    }
}

/* ==========================================================================
   Bottom Tagline
   ========================================================================== */

.black-box-tagline {
    text-align: center;
    margin-top: 3rem;
    position: relative;
    z-index: 2;
}

.black-box-tagline p {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.black-box-tagline strong {
    color: var(--cta-primary);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 1024px) {
    .black-box-container {
        flex-wrap: wrap;
        gap: 1.5rem;
    }

    .data-input-stream,
    .prediction-output-stream {
        width: 100%;
        max-width: 280px;
    }

    .flow-arrow {
        display: none;
    }

    .intelligence-core {
        order: -1;
        width: 100%;
        max-width: 300px;
        height: 280px;
    }
}

@media (max-width: 768px) {
    .black-box-section {
        padding: 3rem 1rem;
    }

    .black-box-container {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }

    .data-input-stream {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }

    .data-label {
        padding: 0.5rem 0.75rem;
        font-size: 0.7rem;
    }

    .data-label::after {
        display: none;
    }

    .intelligence-core {
        width: 100%;
        max-width: 260px;
        height: 260px;
    }

    .prediction-output-stream {
        width: 100%;
        max-width: 300px;
    }

    .prediction-output-card::before {
        display: none;
    }

    /* Slow down animations on mobile for better readability */
    .black-box-container.in-view .data-particle {
        animation-duration: 6s;
    }

    .black-box-container.in-view .neural-node {
        animation-duration: 4s;
    }

    .black-box-container.in-view .neural-connections line {
        animation-duration: 6s;
    }

    .flow-arrow i {
        animation-duration: 4s;
    }

    .processing-indicator::before {
        animation-duration: 3s;
    }
}

/* ==========================================================================
   Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .data-particle,
    .neural-node,
    .neural-connections line,
    .flow-arrow i {
        animation: none;
    }

    .data-particle {
        display: none;
    }

    .neural-node {
        opacity: 0.7;
    }

    .processing-indicator::before {
        animation: none;
        opacity: 1;
    }

    .data-label,
    .prediction-output-card,
    .output-metric {
        opacity: 1;
        transform: none;
        transition: none;
    }
}