/* JRMT Kanban — Brechner-Split-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;
    --column-bg: #f1f5f9;
    --sub-bg: #fff;
    --sub-divider: #cbd5e1;
}

* { 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;
    line-height: 1.4;
}

/* Top-Nav */
.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-sep { color: var(--muted); margin: 0 6px; font-weight: 400; }
.nav-spacer { flex: 1; }
.board-name-display { color: var(--muted); font-size: 0.9rem; }

/* Buttons */
.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-secondary { /* default */ }
.btn-danger { color: var(--danger); border-color: #fecaca; }
.btn-danger:hover { background: #fef2f2; }
.btn-sm { padding: 4px 10px; font-size: 0.8rem; }
.btn-icon { padding: 4px 8px; font-size: 0.95rem; }

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

.board-header {
    background: var(--card);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    position: sticky;
    top: 0;
    z-index: 10;
}
.board-title-row { display: flex; gap: 12px; margin-bottom: 8px; }
.board-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);
}
.board-title-input:hover, .board-title-input:focus {
    outline: none;
    border-bottom-color: var(--accent);
}
.board-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;
}
.board-name-input:focus { outline: none; border-color: var(--accent); }

.board-toolbar { display: flex; gap: 8px; align-items: center; }
.toolbar-spacer { flex: 1; }

.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); }

/* Board-Canvas — horizontale Spalten-Lanes */
.board-canvas {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 20px 24px;
    display: flex;
    gap: 16px;
    align-items: stretch;
    min-height: 600px;
}

.column {
    background: var(--column-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    min-width: 280px;
    max-width: 320px;
    display: flex;
    flex-direction: column;
}
.column.kind-first, .column.kind-last {
    background: #eef2ff;
    border-color: #c7d2fe;
}

.column-header {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.column-title {
    flex: 1;
    font-weight: 600;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    color: var(--text);
    padding: 2px 0;
}
.column-title:focus {
    outline: none;
    border-bottom: 1px dashed var(--accent);
}
.column-role-chip {
    font-size: 0.7rem;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2px 8px;
    color: var(--muted);
    white-space: nowrap;
    max-width: 110px;
    overflow: hidden;
    text-overflow: ellipsis;
}
.column-actions { display: flex; gap: 4px; }

.drag-handle-col {
    cursor: grab;
    color: var(--muted);
    font-size: 0.95rem;
    padding: 0 4px;
    user-select: none;
    letter-spacing: -1px;
}
.drag-handle-col:hover { color: var(--accent); }
.drag-handle-col:active { cursor: grabbing; }

.drag-handle-field {
    cursor: grab;
    color: var(--muted);
    font-size: 0.85rem;
    padding: 0 4px;
    user-select: none;
    letter-spacing: -1px;
}
.drag-handle-field:hover { color: var(--accent); }
.drag-handle-field:active { cursor: grabbing; }

/* Sortable.js Ghost-States */
.column-ghost {
    opacity: 0.4;
    background: var(--accent);
    border-color: var(--accent);
}
.field-row-ghost {
    opacity: 0.4;
    background: #eff6ff;
    border-color: var(--accent);
}

/* Sub-Lane-Container */
.sub-lanes {
    display: flex;
    flex: 1;
    min-height: 200px;
}
.sub-lane {
    flex: 1;
    padding: 10px;
    background: var(--sub-bg);
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.sub-lane.divider-right {
    border-right: 1px dashed var(--sub-divider);
}
.sub-lane-header {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    font-weight: 600;
    padding: 2px 4px 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sub-lane-header .wip-badge {
    background: var(--border);
    color: var(--text);
    border-radius: 10px;
    padding: 1px 8px;
    font-size: 0.7rem;
    letter-spacing: 0;
}
.sub-lane-header .wip-badge.wip-warn { background: #fef3c7; color: #78350f; }
.sub-lane-header .wip-badge.wip-over { background: #fecaca; color: #7f1d1d; }

.field-summary {
    font-size: 0.78rem;
    color: var(--muted);
    line-height: 1.45;
    padding: 4px 6px;
}
.field-summary .chip-line {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    margin-top: 4px;
}
.field-chip {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 1px 6px;
    font-size: 0.72rem;
    color: var(--text);
}
.field-chip.mode-required { border-color: #fca5a5; color: #7f1d1d; background: #fff5f5; }
.field-chip.mode-editable { border-color: #93c5fd; color: var(--accent-dark); background: #eff6ff; }
.field-chip.mode-readonly { border-color: var(--border); color: var(--muted); }

.transition-list {
    margin-top: auto;
    padding-top: 8px;
    border-top: 1px dashed var(--border);
}
.transition-entry {
    font-size: 0.78rem;
    padding: 3px 6px;
    background: #f8fafc;
    border-radius: 4px;
    margin-top: 4px;
    display: flex;
    align-items: center;
    gap: 4px;
}
.transition-entry::before {
    content: "→";
    color: var(--accent);
}
.transition-entry .label { font-weight: 500; }
.transition-entry .target { color: var(--muted); }
.transition-entry.auto {
    background: transparent;
    opacity: 0.7;
    font-style: italic;
}
.transition-entry.auto::before {
    content: "↪";
    color: var(--muted);
}
.transition-entry.auto .label::after {
    content: " (auto)";
    color: var(--muted);
    font-style: normal;
    font-size: 0.7rem;
}

.sub-lane-header .next-role-hint {
    font-size: 0.7rem;
    color: var(--accent);
    font-weight: 500;
    letter-spacing: 0;
    background: #eff6ff;
    border: 1px solid #93c5fd;
    border-radius: 10px;
    padding: 1px 8px;
}

.empty-sub-hint {
    color: #cbd5e1;
    font-size: 0.78rem;
    font-style: italic;
    text-align: center;
    padding: 12px 4px;
}

/* 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: 540px;
    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 */
.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: 720px;
    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;
}

.modal-tabs {
    display: flex;
    gap: 0;
    border-bottom: 1px solid var(--border);
    margin: -20px -20px 16px;
    padding: 0 20px;
}
.modal-tab {
    padding: 10px 16px;
    border: none;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}
.modal-tab.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Formularelemente 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 input:focus,
.form-row textarea:focus,
.form-row select:focus {
    outline: none;
    border-color: var(--accent);
}
.form-row .hint { font-size: 0.75rem; color: var(--muted); margin-top: 4px; }

.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; }
.list-row input { font-size: 0.85rem; padding: 4px 8px; }

/* Sichtbarkeit pro Feld in Sub-Spalte */
.visibility-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px 12px;
    align-items: center;
}
.visibility-grid > .field-label {
    font-size: 0.88rem;
}
.visibility-grid > .field-label .field-name-tech {
    color: var(--muted);
    font-size: 0.75rem;
    margin-left: 4px;
}
.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 */
.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);
    animation: toast-in 0.2s ease-out;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
@keyframes toast-in {
    from { transform: translateY(10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* Footer */
.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; }

/* Mobile fallback — Drag-Drop ist auf iPhone-Bildschirm zu klein */
@media (max-width: 720px) {
    .board-canvas { padding: 12px; }
    .column { min-width: 240px; }
    .modal-frame { width: calc(100% - 16px); }
}