/* ═══════════════════════════════════════════════════════════════════════════
   DiagramVisualizer — Interactive SVG Topology Diagram Styles
   Matches CMMC Network Diagram dark theme (Tokyo Night palette)
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Modal overlay ── */
.dv-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: dv-fade-in 0.2s ease;
}

@keyframes dv-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.dv-modal-content {
    width: 96vw;
    height: 94vh;
    background: #1a1b26;
    border-radius: 12px;
    border: 2px solid #414868;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
}

/* ── Toolbar ── */
.dv-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 16px;
    background: #16161e;
    border-bottom: 1px solid #414868;
    flex-shrink: 0;
    gap: 12px;
}

.dv-toolbar-left,
.dv-toolbar-center,
.dv-toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.dv-toolbar-left svg {
    color: #7aa2f7;
}

.dv-toolbar-title {
    font-size: 14px;
    font-weight: 700;
    color: #c0caf5;
    font-family: 'Inter', sans-serif;
}

.dv-toolbar-count {
    font-size: 11px;
    color: #a9b1d6;
    background: #292e42;
    padding: 2px 8px;
    border-radius: 10px;
    font-family: 'Inter', sans-serif;
}

.dv-tb-btn {
    background: #292e42;
    color: #c0caf5;
    border: 1px solid #414868;
    border-radius: 6px;
    padding: 5px 12px;
    font-size: 12px;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

.dv-tb-btn:hover {
    background: #414868;
    border-color: #7aa2f7;
    color: #fff;
}

.dv-tb-btn.dv-tb-accent {
    background: rgba(122, 162, 247, 0.15);
    border-color: #7aa2f7;
    color: #7aa2f7;
}

.dv-tb-btn.dv-tb-accent:hover {
    background: rgba(122, 162, 247, 0.3);
    color: #fff;
}

.dv-tb-btn.dv-tb-accent svg {
    color: #7aa2f7;
}

.dv-tb-sep {
    width: 1px;
    height: 20px;
    background: #414868;
    margin: 0 4px;
}

.dv-modal-close {
    background: none;
    border: none;
    color: #a9b1d6;
    font-size: 22px;
    cursor: pointer;
    padding: 2px 8px;
    border-radius: 4px;
    line-height: 1;
    transition: all 0.15s ease;
}

.dv-modal-close:hover {
    color: #f7768e;
    background: rgba(247, 118, 142, 0.15);
}

/* ── Canvas area ── */
.dv-canvas-wrap {
    flex: 1;
    overflow: hidden;
    position: relative;
}

.dv-svg {
    display: block;
    width: 100%;
    height: 100%;
}

/* ── Node hover effect ── */
.dv-node {
    transition: filter 0.15s ease;
}

.dv-node:hover {
    filter: brightness(1.15) drop-shadow(0 0 8px rgba(122, 162, 247, 0.3));
}

/* ── Connection handles ── */
.dv-handle {
    opacity: 0;
    transition: opacity 0.15s ease;
}

.dv-node:hover .dv-handle {
    opacity: 1;
}

/* ── Legend ── */
.dv-legend {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 6px 16px;
    background: #16161e;
    border-top: 1px solid #414868;
    flex-shrink: 0;
}

.dv-legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 11px;
    color: #a9b1d6;
    font-family: 'Inter', sans-serif;
}

.dv-legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Side panel ── */
.dv-side-panel {
    position: absolute;
    top: 48px;
    right: 0;
    bottom: 32px;
    width: 340px;
    background: #16161e;
    border-left: 2px solid #414868;
    z-index: 10;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: dv-slide-in 0.2s ease;
}

@keyframes dv-slide-in {
    from { transform: translateX(100%); }
    to   { transform: translateX(0); }
}

.dv-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid #414868;
    flex-shrink: 0;
}

.dv-panel-header h3 {
    font-size: 14px;
    font-weight: 700;
    color: #c0caf5;
    margin: 0;
    font-family: 'Inter', sans-serif;
}

.dv-panel-close {
    background: none;
    border: none;
    color: #a9b1d6;
    font-size: 18px;
    cursor: pointer;
    padding: 2px 6px;
    border-radius: 4px;
    line-height: 1;
}

.dv-panel-close:hover {
    color: #f7768e;
    background: rgba(247, 118, 142, 0.15);
}

.dv-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.dv-panel-desc {
    font-size: 12px;
    color: #a9b1d6;
    margin: 0 0 16px 0;
    line-height: 1.5;
    font-family: 'Inter', sans-serif;
}

.dv-panel-hint {
    font-size: 10px;
    color: #565f89;
    display: block;
    margin-top: 4px;
    font-family: 'Inter', sans-serif;
}

/* ── Panel fields (detail view) ── */
.dv-panel-field {
    margin-bottom: 10px;
}

.dv-panel-field label {
    display: block;
    font-size: 10px;
    font-weight: 600;
    color: #565f89;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
    font-family: 'Inter', sans-serif;
}

.dv-panel-field span {
    font-size: 13px;
    color: #c0caf5;
    font-family: 'Inter', sans-serif;
}

/* ── Panel form groups ── */
.dv-panel-form-group {
    margin-bottom: 12px;
}

.dv-panel-form-group label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: #a9b1d6;
    margin-bottom: 4px;
    font-family: 'Inter', sans-serif;
}

.dv-panel-form-group input,
.dv-panel-form-group select,
.dv-panel-form-group textarea {
    width: 100%;
    background: #1a1b26;
    border: 1px solid #414868;
    border-radius: 6px;
    padding: 7px 10px;
    color: #c0caf5;
    font-size: 12px;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: border-color 0.15s ease;
    box-sizing: border-box;
}

.dv-panel-form-group input:focus,
.dv-panel-form-group select:focus,
.dv-panel-form-group textarea:focus {
    border-color: #7aa2f7;
}

.dv-panel-form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.dv-panel-form-group select {
    cursor: pointer;
}

/* ── Panel buttons ── */
.dv-panel-btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #7aa2f7, #bb9af7);
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 9px 16px;
    font-size: 12px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: 8px;
}

.dv-panel-btn-primary:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.dv-panel-btn-secondary {
    background: #292e42;
    color: #c0caf5;
    border: 1px solid #414868;
    border-radius: 6px;
    padding: 6px 12px;
    font-size: 11px;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: all 0.15s ease;
}

.dv-panel-btn-secondary:hover {
    background: #414868;
    border-color: #7aa2f7;
}

/* ── AI result area ── */
.dv-ai-result {
    margin-top: 16px;
}

.dv-ai-loading {
    text-align: center;
    color: #7aa2f7;
    font-size: 12px;
    padding: 20px;
    font-family: 'Inter', sans-serif;
}

.dv-ai-loading::after {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 2px solid #7aa2f7;
    border-top-color: transparent;
    border-radius: 50%;
    animation: dv-spin 0.8s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

@keyframes dv-spin {
    to { transform: rotate(360deg); }
}

.dv-ai-error {
    color: #f7768e;
    font-size: 12px;
    padding: 12px;
    background: rgba(247, 118, 142, 0.1);
    border: 1px solid rgba(247, 118, 142, 0.3);
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
}

.dv-ai-response {
    border: 1px solid #414868;
    border-radius: 8px;
    overflow: hidden;
}

.dv-ai-response-header {
    background: #292e42;
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    color: #a9b1d6;
    font-family: 'Inter', sans-serif;
}

.dv-ai-response-text {
    padding: 12px;
    font-size: 11px;
    color: #c0caf5;
    background: #1a1b26;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
    margin: 0;
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    line-height: 1.5;
}

.dv-ai-response-actions {
    display: flex;
    gap: 8px;
    padding: 8px 12px;
    background: #292e42;
    border-top: 1px solid #414868;
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .dv-modal-content {
        width: 100vw;
        height: 100vh;
        border-radius: 0;
    }

    .dv-toolbar {
        flex-wrap: wrap;
        gap: 6px;
    }

    .dv-toolbar-center {
        flex-wrap: wrap;
    }

    .dv-side-panel {
        width: 100%;
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        height: 60vh;
        border-left: none;
        border-top: 2px solid #414868;
    }
}