/* ============================================
   HLD Pipeline Diagram Modal Styles
   Interactive, Animated System Architecture View
   Shared across all pages
   ============================================ */

/* Modal Overlay */
.hld-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    animation: fadeIn 0.3s ease;
}

.hld-modal-overlay.hidden {
    display: none;
}

/* Modal Content */
.hld-modal-content {
    background: linear-gradient(145deg, rgba(18, 18, 26, 0.95) 0%, rgba(10, 10, 15, 0.98) 100%);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 1400px;
    max-height: 90vh;
    overflow: hidden;
    /* Contain content within modal, enable scrolling in body */
    box-shadow:
        0 0 60px rgba(99, 102, 241, 0.15),
        0 0 100px rgba(139, 92, 246, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px) scale(0.98);
    }

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

/* Modal Header */
.hld-modal-header {
    padding: var(--spacing-xl) var(--spacing-2xl);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.08) 0%, transparent 100%);
}

.hld-modal-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.hld-modal-title svg {
    color: var(--accent-primary);
    filter: drop-shadow(0 0 8px rgba(99, 102, 241, 0.5));
}

.hld-modal-title h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, #fff 0%, #a0a0b0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hld-modal-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    margin-left: 40px;
}

.hld-modal-close {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.hld-modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--error);
    transform: rotate(90deg);
}

.hld-modal-close svg {
    width: 20px;
    height: 20px;
}

/* Modal Body */
.hld-modal-body {
    padding: var(--spacing-xl) var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    overflow-y: auto;
    overflow-x: hidden;
    max-height: calc(90vh - 120px);
    flex: 1;
}

/* Scrollbar styling for modal body */
.hld-modal-body::-webkit-scrollbar {
    width: 8px;
}

.hld-modal-body::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius-full);
}

.hld-modal-body::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-full);
    transition: background var(--transition-base);
}

.hld-modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.6);
}

/* Pipeline Container */
.hld-pipeline-container {
    position: relative;
    padding: var(--spacing-lg) var(--spacing-xl);
    padding-bottom: 80px;
    /* Space for tooltips below */
    min-height: 300px;
    overflow: visible;
}

/* SVG Flow Lines — replaced by CSS animated dots */
.hld-flow-lines {
    display: none;
}

/* Pipeline Steps Row */
.hld-steps-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    position: relative;
    z-index: 1;
}

/* Individual Step */
.hld-step {
    flex: 1;
    max-width: 160px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    position: relative;
    z-index: 3;
    backdrop-filter: blur(10px);
}

.hld-step:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(99, 102, 241, 0.2);
}

.hld-step:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* Step Icon */
.hld-step-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xs);
    position: relative;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hld-step-icon::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: inherit;
    background: inherit;
    opacity: 0.3;
    filter: blur(8px);
    z-index: -1;
}

.hld-step-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.hld-step.active .hld-step-icon {
    transform: scale(1.1);
}

/* Icon Color Variations */
.hld-step-icon.email {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
}

.hld-step-icon.gmail {
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
}

.hld-step-icon.classify {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.hld-step-icon.docs {
    background: linear-gradient(135deg, #d946ef 0%, #c026d3 100%);
    /* Fuchsia */
}

.hld-step-icon.database {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    /* Cyan */
}

.hld-step-icon.policy {
    background: linear-gradient(135deg, #e11d48 0%, #be123c 100%);
    /* Rose/Red */
}

.hld-step-icon.decision {
    background: linear-gradient(135deg, #22c55e 0%, #16a34a 100%);
}

/* Step Label */
.hld-step-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
    line-height: 1.3;
}

/* Step Badge */
.hld-step-badge {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.hld-step-badge.input {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    border-color: rgba(59, 130, 246, 0.3);
}

.hld-step-badge.trigger {
    background: rgba(249, 115, 22, 0.15);
    color: #fb923c;
    border-color: rgba(249, 115, 22, 0.3);
}

.hld-step-badge.nova {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border-color: rgba(99, 102, 241, 0.3);
}

.hld-step-badge.mcp {
    background: rgba(217, 70, 239, 0.15);
    color: #e879f9;
    border-color: rgba(217, 70, 239, 0.3);
}

.hld-step-badge.postgres {
    background: rgba(6, 182, 212, 0.15);
    color: #22d3ee;
    border-color: rgba(6, 182, 212, 0.3);
}

.hld-step-badge.neo4j {
    background: rgba(225, 29, 72, 0.15);
    color: #fb7185;
    border-color: rgba(225, 29, 72, 0.3);
}

.hld-step-badge.output {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.3);
}

/* Step Tooltip - Positioned BELOW the step */
.hld-step-tooltip {
    position: absolute;
    top: calc(100% + 16px);
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    width: 280px;
    padding: var(--spacing-lg);
    background: rgba(26, 26, 46, 0.98);
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-lg);
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.5),
        0 0 40px rgba(99, 102, 241, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 100;
    backdrop-filter: blur(20px);
}

/* Arrow pointing UP to the step */
.hld-step-tooltip::after {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 16px;
    height: 16px;
    background: rgba(26, 26, 46, 0.98);
    border-left: 1px solid rgba(99, 102, 241, 0.4);
    border-top: 1px solid rgba(99, 102, 241, 0.4);
}

/* Click-to-toggle: show tooltip when step has .active class */
.hld-step.active .hld-step-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Active step highlight (desktop) */
.hld-step.active {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.3),
        0 0 30px rgba(99, 102, 241, 0.2);
}

/* Edge-aware tooltip positioning for first step */
.hld-step:first-child .hld-step-tooltip {
    left: 0;
    transform: translateX(0) translateY(-10px);
}

.hld-step:first-child .hld-step-tooltip::after {
    left: 70px;
}

.hld-step:first-child.active .hld-step-tooltip {
    transform: translateX(0) translateY(0);
}

/* Edge-aware tooltip positioning for last step */
.hld-step:last-child .hld-step-tooltip {
    left: auto;
    right: 0;
    transform: translateX(0) translateY(-10px);
}

.hld-step:last-child .hld-step-tooltip::after {
    left: auto;
    right: 70px;
}

.hld-step:last-child.active .hld-step-tooltip {
    transform: translateX(0) translateY(0);
}

.hld-step-tooltip h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.hld-step-tooltip p {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.hld-step-tooltip strong {
    color: var(--accent-primary);
}

.tooltip-details {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tooltip-details .detail-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.tooltip-details .detail-item svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

/* Category Colors in Tooltip */
.tooltip-details .category-return {
    background: rgba(249, 115, 22, 0.15);
    color: #fb923c;
    border-color: rgba(249, 115, 22, 0.3);
}

.tooltip-details .category-refund {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.3);
}

.tooltip-details .category-replace {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
    border-color: rgba(59, 130, 246, 0.3);
}

.tooltip-details .decision-approve {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.3);
}

.tooltip-details .decision-deny {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border-color: rgba(239, 68, 68, 0.3);
}

.tooltip-details .decision-review {
    background: rgba(251, 191, 36, 0.15);
    color: #fbbf24;
    border-color: rgba(251, 191, 36, 0.3);
}

/* Technology Legend */
.hld-legend {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background: rgba(26, 26, 46, 0.4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.hld-legend h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
}

.legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.2s ease;
}

.legend-item:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
    transform: translateY(-1px);
}

.legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    position: relative;
}

.legend-dot::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: inherit;
    opacity: 0.4;
    filter: blur(4px);
}

.legend-dot.nova {
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
}

.legend-dot.mcp {
    background: linear-gradient(135deg, #8b5cf6, #a855f7);
}

.legend-dot.neo4j {
    background: linear-gradient(135deg, #008cc1, #0066a1);
}

.legend-dot.postgres {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
}

.legend-dot.gcp {
    background: linear-gradient(135deg, #f97316, #ea580c);
}

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

/* Tablet / medium screens — vertical pipeline flow */
@media (max-width: 1200px) {
    .hld-flow-lines {
        display: none;
    }

    .hld-modal-content {
        overflow: hidden;
    }

    .hld-modal-body {
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
    }

    .hld-pipeline-container {
        padding-bottom: var(--spacing-xl);
        min-height: auto;
    }

    /* Vertical pipeline layout */
    .hld-steps-row {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0;
        position: relative;
        z-index: 1;
    }

    .hld-step {
        max-width: 340px;
        width: 100%;
        flex-direction: row;
        align-items: center;
        gap: var(--spacing-md);
        padding: var(--spacing-md) var(--spacing-lg);
        position: relative;
    }

    .hld-step-icon {
        margin-bottom: 0;
        flex-shrink: 0;
    }

    /* Right side: label + badge stacked */
    .hld-step-info {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .hld-step-label {
        text-align: left;
    }

    /* Remove per-step pseudo-elements on mobile */
    .hld-step::before,
    .hld-step::after {
        display: none !important;
    }

    /* Full-height vertical connection line behind all steps */
    .hld-steps-row::before {
        content: '';
        position: absolute;
        top: 5%;
        bottom: 5%;
        left: 50%;
        width: 2px;
        transform: translateX(-50%);
        background: linear-gradient(180deg,
                rgba(99, 102, 241, 0.3) 0%,
                rgba(139, 92, 246, 0.4) 50%,
                rgba(99, 102, 241, 0.3) 100%);
        z-index: -1;
    }

    /* Single animated dot traversing the vertical pipeline top-to-bottom */
    .hld-steps-row::after {
        content: '';
        position: absolute;
        top: 0;
        left: 50%;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #818cf8;
        box-shadow: 0 0 10px rgba(99, 102, 241, 0.8), 0 0 20px rgba(99, 102, 241, 0.4);
        transform: translateX(-50%) translateY(-50%);
        z-index: 1;
        pointer-events: none;
        animation: verticalPipelineDot 9s ease-in-out infinite;
    }

    @keyframes verticalPipelineDot {
        0% {
            top: 5%;
            opacity: 0;
        }

        5% {
            opacity: 1;
        }

        95% {
            opacity: 1;
        }

        100% {
            top: 95%;
            opacity: 0;
        }
    }

    /* Spacing for connector gap */
    .hld-step+.hld-step {
        margin-top: 24px;
    }

    /* Tap-to-expand tooltips */
    .hld-step-tooltip {
        position: static;
        transform: none;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        opacity: 0;
        padding: 0;
        margin: 0;
        border: none;
        box-shadow: none;
        background: transparent;
        transition: max-height 0.35s ease, opacity 0.25s ease, padding 0.35s ease, margin 0.35s ease;
        backdrop-filter: none;
        flex-basis: 100%;
    }

    .hld-step-tooltip::after {
        display: none;
    }

    /* Make step a wrapping flex so tooltip goes below */
    .hld-step {
        flex-wrap: wrap;
    }

    /* Override desktop tooltip positioning — make inline */
    .hld-step.active .hld-step-tooltip {
        position: static;
        transform: none;
        left: auto;
        max-height: 300px;
        opacity: 1;
        visibility: visible;
        padding: var(--spacing-md);
        margin-top: var(--spacing-sm);
        background: rgba(26, 26, 46, 0.95);
        border: 1px solid rgba(99, 102, 241, 0.3);
        border-radius: var(--radius-md);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
        width: 100%;
        flex-basis: 100%;
    }

    /* Active step highlight */
    .hld-step.active {
        border-color: var(--accent-primary);
        background: rgba(99, 102, 241, 0.1);
        box-shadow:
            0 8px 24px rgba(0, 0, 0, 0.3),
            0 0 20px rgba(99, 102, 241, 0.15);
    }

    /* Prevent hover shift */
    .hld-step:hover {
        transform: none;
    }

    /* Edge-aware overrides — inline tooltip, no positioning needed */
    .hld-step:first-child .hld-step-tooltip,
    .hld-step:last-child .hld-step-tooltip {
        left: auto;
        right: auto;
        transform: none;
    }

    .hld-step:first-child.active .hld-step-tooltip,
    .hld-step:last-child.active .hld-step-tooltip {
        transform: none;
    }

    .hld-legend {
        margin-top: var(--spacing-xl);
    }
}

/* Small tablets / large phones */
@media (max-width: 900px) {
    .hld-modal-overlay {
        padding: var(--spacing-md);
    }

    .hld-modal-header {
        padding: var(--spacing-lg) var(--spacing-xl);
    }

    .hld-modal-body {
        padding: var(--spacing-lg);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .hld-modal-overlay {
        padding: var(--spacing-sm);
    }

    .hld-modal-content {
        max-height: 100vh;
        max-height: 100dvh;
        border-radius: var(--radius-lg);
    }

    .hld-modal-header {
        padding: var(--spacing-lg);
        flex-shrink: 0;
    }

    .hld-modal-body {
        padding: var(--spacing-md);
        max-height: none;
    }

    .hld-pipeline-container {
        padding: var(--spacing-sm) 0;
        padding-bottom: var(--spacing-md);
    }

    .hld-modal-title h2 {
        font-size: var(--font-size-xl);
    }

    .hld-step {
        max-width: 100%;
        padding: var(--spacing-md);
    }

    .hld-step-icon {
        width: 50px;
        height: 50px;
    }

    .hld-step-icon svg {
        width: 24px;
        height: 24px;
    }

    .legend-items {
        gap: var(--spacing-sm);
    }

    .hld-legend {
        margin-top: var(--spacing-lg);
    }
}

/* Very small phones */
@media (max-width: 420px) {
    .hld-modal-overlay {
        padding: 0;
    }

    .hld-modal-content {
        border-radius: 0;
        max-height: 100vh;
        max-height: 100dvh;
    }

    .hld-step {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .hld-step-icon {
        width: 44px;
        height: 44px;
    }

    .hld-step-label {
        font-size: var(--font-size-xs);
    }

    .hld-step-tooltip h4 {
        font-size: var(--font-size-xs);
    }

    .hld-step-badge {
        font-size: 9px;
        padding: 3px 8px;
    }
}

/* Small Desktop Screens - Better spacing for HLD tiles */
@media (min-width: 1201px) and (max-width: 1400px) {
    .hld-modal-content {
        max-width: 1200px;
    }

    .hld-step {
        max-width: 140px;
        padding: var(--spacing-md);
    }

    .hld-step-icon {
        width: 50px;
        height: 50px;
    }

    .hld-step-icon svg {
        width: 24px;
        height: 24px;
    }

    .hld-step-label {
        font-size: 13px;
    }

    .hld-step-tooltip h4 {
        font-size: 13px;
    }

    .hld-step-badge {
        font-size: 9px;
        padding: 3px 8px;
    }

    .hld-step-tooltip {
        width: 260px;
    }
}

/* Short Screen Heights - Optimize for limited vertical space */
@media (max-height: 700px) {
    .hld-modal-overlay {
        padding: var(--spacing-md);
        align-items: flex-start;
    }

    .hld-modal-content {
        max-height: 95vh;
        margin-top: var(--spacing-md);
    }

    .hld-modal-header {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .hld-modal-body {
        padding: var(--spacing-md) var(--spacing-lg);
        max-height: calc(95vh - 80px);
    }

    .hld-pipeline-container {
        padding: var(--spacing-sm) var(--spacing-md);
        padding-bottom: 40px;
        min-height: auto;
    }

    .hld-modal-title h2 {
        font-size: var(--font-size-lg);
    }

    .hld-modal-subtitle {
        font-size: var(--font-size-xs);
    }

    .hld-step {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .hld-step-icon {
        width: 45px;
        height: 45px;
    }

    .hld-step-icon svg {
        width: 22px;
        height: 22px;
    }

    .hld-step-label {
        font-size: 12px;
    }

    .hld-step-tooltip h4 {
        font-size: 12px;
    }

    .hld-legend {
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
    }

    .legend-items {
        gap: var(--spacing-xs);
    }
}

/* Connection Lines Animation for Desktop */
@media (min-width: 1201px) {

    /* Connection line between steps */
    .hld-step::before {
        content: '';
        position: absolute;
        right: -50%;
        top: 50%;
        width: 50%;
        height: 2px;
        background: linear-gradient(90deg,
                rgba(99, 102, 241, 0.5) 0%,
                rgba(139, 92, 246, 0.3) 50%,
                rgba(99, 102, 241, 0.5) 100%);
        transform: translateY(-50%);
        z-index: -1;
    }

    .hld-step:last-child::before {
        display: none;
    }

    .hld-step:hover::before {
        background: linear-gradient(90deg,
                rgba(99, 102, 241, 0.8) 0%,
                rgba(139, 92, 246, 0.5) 50%,
                rgba(99, 102, 241, 0.8) 100%);
    }

    /* Single animated dot traversing the entire pipeline left-to-right */
    .hld-steps-row {
        overflow: visible;
    }

    /* Full-width pipeline connection line behind all steps */
    .hld-steps-row::before {
        content: '';
        position: absolute;
        top: 50%;
        left: 5%;
        right: 5%;
        height: 2px;
        background: linear-gradient(90deg,
                rgba(99, 102, 241, 0.3) 0%,
                rgba(139, 92, 246, 0.4) 50%,
                rgba(99, 102, 241, 0.3) 100%);
        transform: translateY(-50%);
        z-index: -1;
    }

    .hld-steps-row::after {
        content: '';
        position: absolute;
        top: 50%;
        left: 0;
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #818cf8;
        box-shadow: 0 0 10px rgba(99, 102, 241, 0.8), 0 0 20px rgba(99, 102, 241, 0.4);
        transform: translateY(-50%) translateX(-50%);
        z-index: 1;
        pointer-events: none;
        animation: pipelineDot 9s ease-in-out infinite;
    }

    @keyframes pipelineDot {
        0% {
            left: 5%;
            opacity: 0;
        }

        5% {
            opacity: 1;
        }

        95% {
            opacity: 1;
        }

        100% {
            left: 95%;
            opacity: 0;
        }
    }

    /* Hover shows tooltip on desktop */
    .hld-step:hover .hld-step-tooltip {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(0);
    }

    .hld-step:first-child:hover .hld-step-tooltip {
        transform: translateX(0) translateY(0);
    }

    .hld-step:last-child:hover .hld-step-tooltip {
        transform: translateX(0) translateY(0);
    }

    /* Hover step highlight */
    .hld-step:hover {
        transform: translateY(-8px) scale(1.05);
    }

    .hld-step:hover .hld-step-icon {
        transform: scale(1.1);
    }
}