/**
 * SVG Diagram Styles
 * Styling for DiagramRenderer generated diagrams
 */

/* ========================================
   BASE DIAGRAM CONTAINER
   ======================================== */

.diagram-wrapper {
    background: var(--color-surface, #ffffff);
    border-radius: var(--vm-card-radius, 12px);
    padding: var(--vm-card-padding, 1.5rem);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.diagram-wrapper::-webkit-scrollbar {
    height: 6px;
}

.diagram-wrapper::-webkit-scrollbar-track {
    background: var(--color-border, #e2e8f0);
    border-radius: 3px;
}

.diagram-wrapper::-webkit-scrollbar-thumb {
    background: var(--color-text-muted, #64748b);
    border-radius: 3px;
}

/* ========================================
   SVG DIAGRAM BASE
   ======================================== */

.diagram-svg {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    font-family: var(--font-sans, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
}

/* ========================================
   NODE STYLES
   ======================================== */

.diagram-svg .node {
    fill: var(--color-surface, #ffffff);
    stroke: var(--color-border, #e2e8f0);
    stroke-width: 2;
    transition: all 0.2s ease;
}

.diagram-svg .node:hover {
    stroke-width: 3;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Primary node (usually first/start) */
.diagram-svg .node--primary {
    fill: var(--color-secondary, #3b82f6);
    stroke: var(--color-secondary, #3b82f6);
}

/* Accent node (usually last/end/success) */
.diagram-svg .node--accent {
    fill: var(--color-accent, #10b981);
    stroke: var(--color-accent, #10b981);
}

/* Warning node */
.diagram-svg .node--warning {
    fill: var(--warning-color, #f59e0b);
    stroke: var(--warning-color, #f59e0b);
}

/* Danger node */
.diagram-svg .node--danger {
    fill: var(--danger-color, #ef4444);
    stroke: var(--danger-color, #ef4444);
}

/* Ghost/muted node */
.diagram-svg .node--ghost {
    fill: var(--color-background, #f8fafc);
    stroke: var(--color-border, #e2e8f0);
    stroke-dasharray: 4 2;
}

/* ========================================
   NODE TEXT
   ======================================== */

.diagram-svg .node-text {
    fill: var(--color-primary, #1e293b);
    font-size: 14px;
    font-weight: 500;
    text-anchor: middle;
    dominant-baseline: middle;
    pointer-events: none;
}

.diagram-svg .node-text--light,
.diagram-svg .node--primary .node-text,
.diagram-svg .node--accent .node-text,
.diagram-svg .node--warning .node-text,
.diagram-svg .node--danger .node-text {
    fill: white;
}

.diagram-svg .node-text--sub {
    font-size: 11px;
    font-weight: 400;
    opacity: 0.8;
}

.diagram-svg .node--ghost .node-text {
    fill: var(--color-text-muted, #64748b);
}

/* ========================================
   DECISION DIAMOND
   ======================================== */

.diagram-svg .decision {
    fill: var(--color-background, #f8fafc);
    stroke: var(--color-secondary, #3b82f6);
    stroke-width: 2;
    transition: all 0.2s ease;
}

.diagram-svg .decision:hover {
    stroke-width: 3;
    filter: drop-shadow(0 2px 4px rgba(59, 130, 246, 0.2));
}

/* ========================================
   CONNECTORS / LINES
   ======================================== */

.diagram-svg .connector {
    fill: none;
    stroke: var(--color-border, #e2e8f0);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.diagram-svg .connector--active {
    stroke: var(--color-secondary, #3b82f6);
}

.diagram-svg .connector--success {
    stroke: var(--color-accent, #10b981);
}

.diagram-svg .connector--dashed {
    stroke-dasharray: 6 4;
}

/* ========================================
   CONNECTOR LABELS
   ======================================== */

.diagram-svg .connector-label {
    fill: var(--color-text-muted, #64748b);
    font-size: 11px;
    font-weight: 500;
    text-anchor: middle;
}

/* ========================================
   ARROW MARKERS
   ======================================== */

.diagram-svg .arrow {
    fill: var(--color-border, #e2e8f0);
}

.diagram-svg .arrow--active {
    fill: var(--color-secondary, #3b82f6);
}

.diagram-svg .arrow--success {
    fill: var(--color-accent, #10b981);
}

/* ========================================
   DIAGRAM TITLE & CAPTION
   ======================================== */

.diagram-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary, #1e293b);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.diagram-title i {
    color: var(--color-secondary, #3b82f6);
}

.diagram-caption {
    font-size: 0.8125rem;
    color: var(--color-text-muted, #64748b);
    margin-top: 0.75rem;
    text-align: center;
    font-style: italic;
}

/* ========================================
   INTERACTIVE STATES
   ======================================== */

.diagram-svg .node-group {
    cursor: pointer;
}

.diagram-svg .node-group:focus {
    outline: none;
}

.diagram-svg .node-group:focus .node {
    stroke-width: 3;
    stroke: var(--color-secondary, #3b82f6);
}

/* Tooltip styles for diagrams */
.diagram-tooltip {
    position: absolute;
    background: var(--color-primary, #1e293b);
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8125rem;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 100;
    max-width: 200px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.diagram-tooltip::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-top: 6px solid var(--color-primary, #1e293b);
}

.diagram-tooltip.visible {
    opacity: 1;
}

/* ========================================
   ANIMATED FLOW
   ======================================== */

.diagram-svg .connector--animated {
    stroke-dasharray: 10 5;
    animation: flowAnimation 1s linear infinite;
}

@keyframes flowAnimation {
    from {
        stroke-dashoffset: 15;
    }
    to {
        stroke-dashoffset: 0;
    }
}

/* ========================================
   DIAGRAM LEGEND
   ======================================== */

.diagram-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border, #e2e8f0);
}

.diagram-legend__item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted, #64748b);
}

.diagram-legend__marker {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.diagram-legend__marker--primary {
    background: var(--color-secondary, #3b82f6);
}

.diagram-legend__marker--accent {
    background: var(--color-accent, #10b981);
}

.diagram-legend__marker--default {
    background: var(--color-surface, #ffffff);
    border: 2px solid var(--color-border, #e2e8f0);
}

.diagram-legend__marker--decision {
    transform: rotate(45deg);
    background: var(--color-background, #f8fafc);
    border: 2px solid var(--color-secondary, #3b82f6);
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 600px) {
    .diagram-wrapper {
        padding: 1rem;
    }

    .diagram-svg .node-text {
        font-size: 12px;
    }

    .diagram-svg .node-text--sub {
        font-size: 10px;
    }

    .diagram-legend {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .diagram-wrapper {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--color-border, #e2e8f0);
    }

    .diagram-svg .connector--animated {
        animation: none;
    }
}

/* ========================================
   REDUCED MOTION
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .diagram-svg .connector--animated {
        animation: none;
    }

    .diagram-svg .node,
    .diagram-svg .decision {
        transition: none;
    }
}