/* JRMT Swimlane — freier Workflow-Editor.
   CSS-Variablen-Theme aus dem JRMT-Hausstil. */
:root {
    --accent: #2563eb;
    --accent-dark: #1e40af;
    --bg: #f8fafc;
    --card: #fff;
    --text: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --success: #16a34a;
    --warn: #d97706;
    --danger: #dc2626;
    --lane-bg-alt: #f1f5f9;
    --node-fill: #fff;
    --node-stroke: #475569;
    --node-stroke-selected: #2563eb;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    font-size: 14px;
}

.research-banner {
    background: #fef3c7;
    border-bottom: 1px solid #f59e0b;
    color: #78350f;
    padding: 8px 24px;
    font-size: 0.85rem;
    text-align: center;
}

/* Nav (Hausstil) */
.nav {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 10px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    height: 52px;
}
.nav h1 { font-size: 1.05rem; font-weight: 700; }
.nav h1 a { color: var(--accent); text-decoration: none; }
.nav > a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
}
.nav > a:hover { color: var(--accent); }
.nav > a.active { color: var(--accent); }
.nav-spacer { flex: 1; }
.diagram-name-display { color: var(--muted); font-size: 0.9rem; }

/* Buttons (Hausstil) */
.btn {
    border: 1px solid var(--border);
    background: var(--card);
    color: var(--text);
    padding: 7px 14px;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }

/* Editor-Shell */
.editor-shell { display: flex; flex-direction: column; min-height: calc(100vh - 130px); }
.editor-shell.hidden, .hidden { display: none !important; }

.editor-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    position: sticky;
    top: 0;
    z-index: 10;
}
.title-row { display: flex; gap: 12px; margin-bottom: 8px; }
.diagram-title-input {
    flex: 1;
    border: none;
    border-bottom: 1px dashed transparent;
    background: transparent;
    font-size: 1.2rem;
    font-weight: 600;
    padding: 4px 0;
    color: var(--text);
}
.diagram-title-input:hover, .diagram-title-input:focus {
    outline: none;
    border-bottom-color: var(--accent);
}
.diagram-name-input {
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 4px 8px;
    font-family: ui-monospace, SFMono-Regular, Monaco, monospace;
    font-size: 0.85rem;
    color: var(--muted);
    width: 200px;
}

.toolbar { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.toolbar-sep { width: 1px; height: 20px; background: var(--border); margin: 0 6px; }
.toolbar-spacer { flex: 1; }
.palette-label { color: var(--muted); font-size: 0.78rem; margin-right: 4px; }
.node-palette {
    border: 1px dashed var(--muted);
    background: var(--card);
    padding: 4px 10px;
    border-radius: 6px;
    cursor: grab;
    font-size: 0.85rem;
    font-family: inherit;
}
.node-palette:hover { border-color: var(--accent); color: var(--accent); border-style: solid; }
.node-palette:active { cursor: grabbing; }

.save-indicator {
    font-size: 0.8rem;
    color: var(--muted);
    transition: color 0.2s;
}
.save-indicator.saving { color: var(--warn); }
.save-indicator.saved { color: var(--success); }
.save-indicator.error { color: var(--danger); }

/* Canvas */
.canvas-host {
    flex: 1;
    overflow: auto;
    background: var(--bg);
    padding: 0;
    min-height: 600px;
}
.canvas-svg {
    display: block;
    background: repeating-linear-gradient(
        0deg, transparent, transparent 19px, rgba(0,0,0,0.03) 19px, rgba(0,0,0,0.03) 20px
    ),
    repeating-linear-gradient(
        90deg, transparent, transparent 19px, rgba(0,0,0,0.03) 19px, rgba(0,0,0,0.03) 20px
    );
}

/* Lanes */
.lane-rect { fill: var(--card); stroke: var(--border); stroke-width: 1; }
.lane-rect.alt { fill: var(--lane-bg-alt); }
.lane-label {
    font-size: 13px;
    font-weight: 600;
    fill: var(--text);
    text-anchor: middle;
}
.lane-role-label {
    font-size: 11px;
    fill: var(--muted);
    text-anchor: middle;
}
.lane-controls {
    cursor: pointer;
}

/* Nodes */
.node-g { cursor: move; }
.node-shape {
    fill: var(--node-fill);
    stroke: var(--node-stroke);
    stroke-width: 1.5;
}
.node-g.kind-start .node-shape { fill: #d1fae5; stroke: var(--success); stroke-width: 2; }
.node-g.kind-end .node-shape   { fill: #fee2e2; stroke: var(--danger);  stroke-width: 3; }
.node-g.kind-user_task .node-shape { fill: #eff6ff; stroke: var(--accent); }
.node-g.kind-gateway .node-shape   { fill: #fef3c7; stroke: var(--warn); }
.node-g.kind-email_task .node-shape { fill: #ede9fe; stroke: #7c3aed; }
.node-g.selected .node-shape { stroke: var(--accent); stroke-width: 3; }
.node-label {
    font-size: 12px;
    fill: var(--text);
    text-anchor: middle;
    pointer-events: none;
    user-select: none;
}
.node-kind-icon {
    font-size: 16px;
    text-anchor: middle;
    pointer-events: none;
    user-select: none;
    fill: var(--node-stroke);
    font-weight: 600;
}

/* Node connect handle (kleiner Punkt rechts/unten am Knoten) */
.node-handle {
    fill: var(--accent);
    stroke: var(--card);
    stroke-width: 2;
    opacity: 0;
    transition: opacity 0.15s;
    cursor: crosshair;
}
.node-g:hover .node-handle { opacity: 0.85; }
.node-handle:hover { opacity: 1; r: 7; }

/* Edges */
.edge-path {
    fill: none;
    stroke: var(--muted);
    stroke-width: 1.5;
    marker-end: url(#arrowhead);
}
.edge-path.has-php { stroke-dasharray: 6 3; }
.edge-path.selected { stroke: var(--accent); marker-end: url(#arrowhead-active); }
.edge-hit {
    fill: none;
    stroke: transparent;
    stroke-width: 18;
    cursor: pointer;
}
.edge-label {
    font-size: 11px;
    fill: var(--text);
    text-anchor: middle;
    pointer-events: none;
    user-select: none;
}
.edge-label-bg { fill: var(--card); stroke: var(--border); stroke-width: 1; rx: 4; }
.edge-php-badge {
    font-size: 9px;
    fill: var(--warn);
    text-anchor: middle;
    pointer-events: none;
}

/* Live drag-preview-edge while connecting */
.edge-preview {
    fill: none;
    stroke: var(--accent);
    stroke-width: 1.5;
    stroke-dasharray: 4 4;
    marker-end: url(#arrowhead-active);
    pointer-events: none;
}

/* Empty-State */
.empty-state {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
}
.empty-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    max-width: 600px;
    text-align: center;
}
.empty-card h2 { margin-bottom: 12px; font-size: 1.3rem; }
.empty-card p { color: var(--muted); margin-bottom: 20px; }
.empty-actions { display: flex; gap: 8px; justify-content: center; }

/* Modal (Hausstil, identisch zu Kanban) */
.modal-host {
    position: fixed; inset: 0; z-index: 100;
    display: flex; align-items: center; justify-content: center;
}
.modal-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.45); }
.modal-frame {
    position: relative; background: var(--card); border-radius: 12px;
    max-width: 760px; width: calc(100% - 40px);
    max-height: calc(100vh - 80px); display: flex; flex-direction: column;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}
.modal-header {
    padding: 16px 20px; border-bottom: 1px solid var(--border);
    display: flex; align-items: center;
}
.modal-header h3 { flex: 1; font-size: 1.05rem; }
.modal-close {
    background: transparent; border: none; font-size: 1.5rem;
    color: var(--muted); cursor: pointer; line-height: 1;
}
.modal-close:hover { color: var(--danger); }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer {
    padding: 12px 20px; border-top: 1px solid var(--border);
    display: flex; gap: 8px; justify-content: flex-end;
}

/* Form-Elemente in Modals */
.form-row { margin-bottom: 14px; }
.form-row label {
    display: block; font-size: 0.8rem; font-weight: 600;
    color: var(--muted); margin-bottom: 4px;
    text-transform: uppercase; letter-spacing: 0.04em;
}
.form-row input[type=text],
.form-row input[type=number],
.form-row textarea,
.form-row select {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 8px 10px;
    font-size: 0.9rem;
    font-family: inherit;
}
.form-row textarea.code {
    font-family: ui-monospace, SFMono-Regular, Monaco, monospace;
    font-size: 0.85rem;
    min-height: 130px;
    background: #f8fafc;
}
.form-row .hint { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }
.form-row .hint code { background: var(--border); padding: 1px 4px; border-radius: 3px; font-size: 0.78rem; }

.list-row {
    display: flex; gap: 8px; align-items: center;
    padding: 8px; border: 1px solid var(--border);
    border-radius: 6px; margin-bottom: 6px; background: var(--bg);
}
.list-row .grow { flex: 1; }

.visibility-grid {
    display: grid; grid-template-columns: 1fr auto; gap: 8px 12px; align-items: center;
}
.segment-control {
    display: inline-flex; border: 1px solid var(--border);
    border-radius: 6px; overflow: hidden;
}
.segment-control button {
    background: var(--card); border: none; padding: 4px 10px;
    font-size: 0.75rem; cursor: pointer; color: var(--muted);
    border-right: 1px solid var(--border);
}
.segment-control button:last-child { border-right: none; }
.segment-control button.active { background: var(--accent); color: #fff; }

.issues-list { list-style: none; margin: 0; padding: 0; }
.issues-list li {
    padding: 8px 12px; border-radius: 6px; margin-bottom: 6px;
    font-size: 0.88rem;
}
.issues-list li.sev-ERROR { background: #fef2f2; color: #7f1d1d; border-left: 3px solid var(--danger); }
.issues-list li.sev-WARN  { background: #fffbeb; color: #78350f; border-left: 3px solid var(--warn); }

/* Toast */
.toast-host {
    position: fixed; bottom: 20px; right: 20px; z-index: 200;
    display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
    background: var(--text); color: #fff; padding: 10px 16px;
    border-radius: 8px; font-size: 0.85rem; pointer-events: auto;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

.page-footer {
    text-align: center; padding: 24px; color: var(--muted);
    font-size: 0.8rem; border-top: 1px solid var(--border);
}
.page-footer a { color: var(--accent); text-decoration: none; }