* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); min-height: 100vh; padding: 20px; padding-top: 68px; }

.demo-toolbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; display: flex; justify-content: space-between; align-items: center; padding: 8px 20px; background: #1a1a2e; font-family: 'Work Sans', sans-serif; }
.demo-toolbar a { display: flex; align-items: center; gap: 10px; text-decoration: none; color: #5fa6a6; font-size: 1.25rem; }
.demo-toolbar .logo { height: 40px; }
.demo-toolbar .brand-wf { font-weight: 520; }
.demo-toolbar .brand-js { font-weight: 700; }
.demo-toolbar .demo-info { font-size: 12px; color: rgba(255,255,255,0.7); }
.demo-toolbar .demo-info strong { color: #fff; }

.kanban-app { max-width: 1400px; margin: 0 auto; }
.kanban-header { color: white; margin-bottom: 20px; }
.kanban-header h1 { font-size: 28px; font-weight: 600; margin-bottom: 8px; }
.kanban-header p { opacity: 0.9; font-size: 14px; }

.toolbar { display: flex; gap: 12px; align-items: center; margin-bottom: 20px; flex-wrap: wrap; }
.search-box { min-width: 200px; max-width: 300px; padding: 10px 14px; border: none; border-radius: 6px; font-size: 14px; background: rgba(255,255,255,0.95); }
.search-box:focus { outline: 2px solid rgba(255,255,255,0.5); }
.stats { display: flex; gap: 16px; color: white; font-size: 13px; }
.stat { display: flex; align-items: center; gap: 6px; background: rgba(255,255,255,0.15); padding: 6px 12px; border-radius: 20px; }
.stat-value { font-weight: 600; }
.toolbar-btn { padding: 8px 16px; border: none; border-radius: 6px; font-size: 13px; cursor: pointer; background: rgba(255,255,255,0.2); color: white; transition: background 0.2s; }
.toolbar-btn:hover { background: rgba(255,255,255,0.3); }
.toolbar-btn.danger { background: rgba(235,90,70,0.8); }
.toolbar-btn.danger:hover { background: rgba(235,90,70,1); }
.toolbar-btn.tutorial { background: rgba(255,255,255,0.9); color: #667eea; font-weight: 600; }
.toolbar-btn.tutorial:hover { background: white; }

.kanban-board { display: flex; gap: 16px; overflow-x: auto; padding-bottom: 20px; align-items: flex-start; justify-content: center; }
.kanban-board > [data-list] { display: contents; }

.kanban-column { background: #ebecf0; border-radius: 8px; display: flex; flex-direction: column; max-height: calc(100vh - 240px); transition: min-width 0.3s, max-width 0.3s; }
.cols-3 .kanban-column { min-width: 300px; max-width: 300px; }
.cols-4 .kanban-column { min-width: 260px; max-width: 260px; }
.cols-5 .kanban-column { min-width: 220px; max-width: 220px; }

.column-header { padding: 12px; font-weight: 600; font-size: 14px; display: flex; justify-content: space-between; align-items: center; position: relative; }
.column-header-left { display: flex; align-items: center; gap: 8px; }
.column-header-right { display: flex; align-items: center; }
.column-count { background: rgba(0,0,0,0.1); padding: 2px 8px; border-radius: 10px; font-size: 12px; font-weight: 500; }

.column-settings-btn { background: none; border: none; font-size: 16px; cursor: pointer; padding: 4px; border-radius: 4px; opacity: 0.7; }
.column-settings-btn:hover { background: rgba(0,0,0,0.1); opacity: 1; }
.column-settings-popover { position: absolute; top: 100%; right: 0; background: white; border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,0.2); padding: 16px; min-width: 220px; z-index: 100; color: #172b4d; }
.settings-group { margin-bottom: 12px; }
.settings-label { display: block; font-size: 12px; font-weight: 500; color: #5e6c84; margin-bottom: 4px; }
.settings-input { width: 100%; padding: 8px; border: 1px solid #dfe1e6; border-radius: 4px; font-size: 14px; }
.settings-color-row { display: flex; gap: 8px; }
.settings-color-input { width: 50px; height: 36px; border: 1px solid #dfe1e6; border-radius: 4px; cursor: pointer; }
.settings-color-hex { flex: 1; padding: 8px; border: 1px solid #dfe1e6; border-radius: 4px; font-size: 14px; font-family: monospace; }
.settings-delete-btn { width: 100%; padding: 8px; border: none; border-radius: 4px; background: #ffebe6; color: #eb5a46; cursor: pointer; font-size: 13px; margin-bottom: 8px; }
.settings-delete-btn:hover { background: #ffd6cc; }
.settings-close-btn { width: 100%; padding: 8px; border: none; border-radius: 4px; background: #f4f5f7; color: #5e6c84; cursor: pointer; font-size: 13px; }
.settings-close-btn:hover { background: #dfe1e6; }

.card-list { flex: 1; overflow-y: auto; padding: 0 8px 8px; min-height: 100px; }
.card { background: white; border-radius: 6px; padding: 10px; margin-bottom: 8px; box-shadow: 0 1px 2px rgba(0,0,0,0.1); cursor: grab; user-select: none; -webkit-user-select: none; }
.card:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.15); }
.card.priority-high { border-left: 3px solid #eb5a46; }
.card.priority-medium { border-left: 3px solid #f2d600; }
.card.priority-low { border-left: 3px solid #61bd4f; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; margin-bottom: 6px; }
.card-title { font-size: 14px; color: #172b4d; flex: 1; }
.priority-badge { font-size: 10px; padding: 2px 6px; border-radius: 3px; font-weight: 500; text-transform: uppercase; }
.priority-badge.high { background: #ffebe6; color: #eb5a46; }
.priority-badge.medium { background: #fff8e1; color: #b8860b; }
.priority-badge.low { background: #e8f5e9; color: #388e3c; }
.card-description { font-size: 12px; color: #5e6c84; margin-bottom: 8px; line-height: 1.4; }
.card-actions { display: flex; gap: 4px; flex-wrap: wrap; }
.card-btn { border: none; background: #f4f5f7; padding: 4px 8px; border-radius: 4px; font-size: 11px; cursor: pointer; color: #5e6c84; }
.card-btn:hover { background: #dfe1e6; }
.card-btn.delete { color: #eb5a46; }
.card-btn.delete:hover { background: #ffebe6; }
.card-btn.edit { color: #0079bf; }
.card-btn.edit:hover { background: #e4f0f6; }

.add-card-section { padding: 8px; }
.add-card-btn { width: 100%; padding: 8px 12px; border: none; background: transparent; font-size: 14px; cursor: pointer; text-align: left; border-radius: 4px; color: #5e6c84; }
.add-card-btn:hover { background: rgba(0,0,0,0.05); color: #172b4d; }

.new-card-form { background: white; border-radius: 6px; padding: 10px; }
.new-card-form input, .new-card-form textarea { width: 100%; padding: 8px; border: 1px solid #dfe1e6; border-radius: 4px; font-size: 14px; font-family: inherit; margin-bottom: 8px; }
.new-card-form textarea { resize: vertical; min-height: 60px; }
.priority-selector { display: flex; gap: 8px; margin-bottom: 10px; }
.priority-option { flex: 1; padding: 6px; border: 2px solid #dfe1e6; border-radius: 4px; text-align: center; font-size: 11px; cursor: pointer; }
.priority-option.high { color: #eb5a46; }
.priority-option.high.selected { border-color: #eb5a46; background: #ffebe6; }
.priority-option.medium { color: #b8860b; }
.priority-option.medium.selected { border-color: #f2d600; background: #fff8e1; }
.priority-option.low { color: #388e3c; }
.priority-option.low.selected { border-color: #61bd4f; background: #e8f5e9; }
.form-actions { display: flex; gap: 8px; }
.form-actions button { flex: 1; }
.btn-primary { padding: 8px 16px; border: none; border-radius: 6px; font-size: 14px; font-weight: 500; cursor: pointer; background: #0079bf; color: white; }
.btn-primary:hover { background: #026aa7; }
.btn-secondary { padding: 8px 16px; border: none; border-radius: 6px; font-size: 14px; cursor: pointer; background: #f4f5f7; color: #5e6c84; }
.btn-secondary:hover { background: #dfe1e6; }

.add-column-container { min-width: 140px; }
.add-column-btn { width: 100%; padding: 12px 16px; background: rgba(255,255,255,0.2); color: white; border: 2px dashed rgba(255,255,255,0.4); border-radius: 8px; font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.2s; display: flex; align-items: center; justify-content: center; gap: 8px; }
.add-column-btn:hover { background: rgba(255,255,255,0.3); border-color: rgba(255,255,255,0.6); }

.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.5); display: flex; align-items: center; justify-content: center; z-index: 1000; }
.modal { background: white; border-radius: 8px; width: 90%; max-width: 500px; }
.modal-header { padding: 16px 20px; border-bottom: 1px solid #dfe1e6; display: flex; justify-content: space-between; align-items: center; }
.modal-header h2 { font-size: 18px; color: #172b4d; }
.modal-close { background: none; border: none; font-size: 24px; cursor: pointer; color: #5e6c84; }
.modal-body { padding: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 13px; font-weight: 500; color: #5e6c84; }
.form-group input, .form-group textarea { width: 100%; padding: 10px; border: 1px solid #dfe1e6; border-radius: 4px; font-size: 14px; }
.form-group textarea { min-height: 100px; resize: vertical; }
.modal-footer { padding: 16px 20px; border-top: 1px solid #dfe1e6; display: flex; justify-content: flex-end; gap: 8px; }

.card.sortable-ghost { opacity: 1; background: rgba(255, 255, 255, 0.25); border: 2px dashed #0079bf; border-radius: 6px; box-shadow: none !important; height: 60px; min-height: 60px; max-height: 60px; padding: 0; overflow: hidden; }
.card.sortable-ghost * { visibility: hidden; }
.card.sortable-chosen { box-shadow: 0 8px 20px rgba(0,0,0,0.25); }
/* Fallback drag clone (mobile/touch) — cloned to <body>, loses column width context */
.card.sortable-fallback { width: 280px; height: auto !important; min-height: 0; max-height: none; background: white; opacity: 1 !important; box-shadow: 0 8px 20px rgba(0,0,0,0.25); }

.move-btn { display: none; }

@media (max-width: 600px) {
    .move-btn {
        display: inline-block;
        background: rgba(0,0,0,0.08);
        border: none;
        border-radius: 4px;
        font-size: 12px;
        padding: 4px 8px;
        cursor: pointer;
        color: #555;
    }
    .move-btn:hover { background: rgba(0,0,0,0.15); }
    .first-column .move-left { display: none; }
    .last-column .move-right { display: none; }
    .card-actions { justify-content: space-between; }
    .demo-toolbar { flex-wrap: wrap; gap: 4px 12px; padding: 6px 12px; }
    .demo-toolbar .demo-info { display: none; }
    .kanban-board { justify-content: flex-start; }
    .kanban-header h1 { font-size: 20px; }
    .kanban-header p { font-size: 12px; }
    .toolbar { gap: 8px; }
    .search-box { min-width: 140px; font-size: 12px; padding: 8px 10px; }
    .stats { gap: 8px; font-size: 11px; }
    .stat { padding: 4px 8px; }
    .toolbar-btn { font-size: 11px; padding: 6px 10px; }
    .toolbar-btn.tutorial { display: none; }
}