/* IdeaGenerator — Stylesheet */
:root {
    --bg: #f5f7fa;
    --surface: #ffffff;
    --surface-hover: #f0f2f5;
    --border: #e2e5eb;
    --text: #1a1d27;
    --text-muted: #6b7280;
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --success: #16a34a;
    --warning: #d97706;
    --danger: #dc2626;
    --info: #2563eb;
    --radius: 8px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }

/* Layout */
.app { display: grid; grid-template-rows: auto 1fr; min-height: 100vh; }
.header { background: var(--surface); border-bottom: 1px solid var(--border); padding: 16px 24px; display: flex; align-items: center; justify-content: space-between; }
.header h1 { font-size: 20px; font-weight: 600; }
.header h1 span { color: var(--primary); }
.nav { display: flex; gap: 8px; }
.nav a { color: var(--text-muted); text-decoration: none; padding: 6px 14px; border-radius: var(--radius); font-size: 14px; transition: all 0.2s; }
.nav a:hover, .nav a.active { background: var(--surface-hover); color: var(--text); }
.main { padding: 24px; width: 100%; }

/* Cards */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-header h2 { font-size: 16px; font-weight: 600; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 24px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat .value { font-size: 28px; font-weight: 700; color: var(--primary); }
.stat .label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border: none; border-radius: var(--radius); font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.2s; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-success { background: var(--success); color: white; }
.btn-success:hover { opacity: 0.9; }
.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { opacity: 0.9; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-muted); }
.btn-outline:hover { border-color: var(--primary); color: var(--text); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-group { display: flex; gap: 6px; }

/* Badges */
.badge { display: inline-block; padding: 2px 8px; border-radius: 12px; font-size: 11px; font-weight: 600; }
.badge-pending { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-processing { background: rgba(59,130,246,0.15); color: var(--info); }
.badge-done { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-failed { background: rgba(239,68,68,0.15); color: var(--danger); }
.badge-unapproved { background: rgba(245,158,11,0.15); color: var(--warning); }
.badge-approved { background: rgba(34,197,94,0.15); color: var(--success); }
.badge-type { background: rgba(99,102,241,0.15); color: var(--primary); }

/* Tables */
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 13px; }
th { color: var(--text-muted); font-weight: 500; font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
tr:hover td { background: var(--surface-hover); }

/* Item cards (approval) */
.item-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.item-card .item-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 8px; }
.item-card .item-name { font-weight: 600; font-size: 15px; }
.item-card .item-desc { color: var(--text-muted); font-size: 13px; margin-bottom: 12px; }
.item-card .item-props { font-size: 12px; color: var(--text-muted); background: var(--bg); padding: 8px 12px; border-radius: 4px; overflow-x: auto; white-space: pre-wrap; word-break: break-word; max-height: 150px; }
.item-card .item-actions { display: flex; gap: 6px; margin-top: 12px; }

/* Pipeline visual */
.pipeline { display: flex; gap: 0; align-items: center; margin-bottom: 24px; padding: 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.pipeline-step { flex: 1; text-align: center; padding: 12px 8px; position: relative; min-width: 120px; }
.pipeline-step .step-num { width: 32px; height: 32px; border-radius: 50%; background: var(--border); color: var(--text-muted); display: inline-flex; align-items: center; justify-content: center; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.pipeline-step.active .step-num { background: var(--primary); color: white; }
.pipeline-step .step-label { font-size: 12px; color: var(--text-muted); }
.pipeline-arrow { color: var(--border); font-size: 20px; flex-shrink: 0; }

/* Select / Inputs */
select, input[type="text"] { background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: var(--radius); font-size: 13px; }
select:focus, input:focus { outline: none; border-color: var(--primary); }

/* Loading */
.spinner { display: inline-block; width: 16px; height: 16px; border: 2px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
.toast { position: fixed; bottom: 24px; right: 24px; padding: 12px 20px; border-radius: var(--radius); font-size: 13px; z-index: 1000; animation: slideIn 0.3s ease; }
.toast-success { background: var(--success); color: white; }
.toast-error { background: var(--danger); color: white; }
@keyframes slideIn { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

/* Empty state */
.empty { text-align: center; padding: 48px 24px; color: var(--text-muted); }
.empty .icon { font-size: 40px; margin-bottom: 12px; }

/* Definitions page — two-column layout */
.definitions-layout { display: grid; grid-template-columns: 3fr 2fr; gap: 24px; align-items: start; }
@media (max-width: 900px) { .definitions-layout { grid-template-columns: 1fr; } }
.form-sticky { position: sticky; top: 24px; }
.form-group { margin-bottom: 12px; }
.form-group label { display: block; font-size: 12px; color: var(--text-muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.3px; }
.form-group input, .form-group select, .form-group textarea { width: 100%; background: var(--bg); border: 1px solid var(--border); color: var(--text); padding: 8px 12px; border-radius: var(--radius); font-size: 13px; font-family: inherit; }
.form-group textarea { resize: vertical; min-height: 60px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* Parent picker — chips + search list */
.parent-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; min-height: 24px; }
.parent-chip { display: inline-flex; align-items: center; gap: 4px; background: rgba(99,102,241,0.12); color: var(--primary); padding: 3px 10px; border-radius: 14px; font-size: 12px; font-weight: 500; }
.parent-chip .chip-remove { cursor: pointer; font-size: 15px; line-height: 1; margin-left: 2px; color: var(--text-muted); transition: color 0.15s; }
.parent-chip .chip-remove:hover { color: var(--danger); }
.parent-pick-list { max-height: 160px; overflow-y: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); margin-top: 4px; }
.parent-pick-item { padding: 7px 12px; font-size: 13px; cursor: pointer; transition: background 0.1s; }
.parent-pick-item:hover { background: var(--surface-hover); }
.parent-pick-item:not(:last-child) { border-bottom: 1px solid var(--border); }

/* Tree view */
.tree-row { display: flex; align-items: center; gap: 8px; padding: 8px 12px; border-bottom: 1px solid var(--border); transition: background 0.15s; cursor: default; position: relative; }
.tree-row:hover { background: var(--surface-hover); }
.tree-row.selected { background: rgba(99,102,241,0.08); border-left: 3px solid var(--primary); }
.tree-row.dragging { opacity: 0.4; background: var(--bg); }
.tree-row .drag-handle { cursor: grab; color: var(--text-muted); font-size: 16px; padding: 2px 4px; flex-shrink: 0; user-select: none; }
.tree-row .drag-handle:active { cursor: grabbing; }
.drop-indicator { position: absolute; left: 0; right: 0; height: 3px; background: var(--primary); border-radius: 2px; pointer-events: none; z-index: 10; }
.drop-indicator.drop-above { top: -2px; }
.drop-indicator.drop-below { bottom: -2px; }
.drop-indicator.drop-child { top: 0; bottom: 0; height: auto; background: rgba(99,102,241,0.1); border: 2px dashed var(--primary); border-radius: var(--radius); }
.tree-indent { flex-shrink: 0; display: flex; align-items: center; }
.tree-indent .indent-guide { width: 20px; height: 100%; border-left: 1px solid var(--border); margin-left: 9px; }
.tree-info { flex: 1; min-width: 0; }
.tree-info .tree-title { font-weight: 600; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tree-info .tree-desc { font-size: 12px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 400px; }
.tree-badges { display: flex; gap: 4px; flex-shrink: 0; }
.tree-actions { display: flex; gap: 2px; flex-shrink: 0; margin-left: auto; }
.tree-actions button { background: none; border: 1px solid transparent; color: var(--text-muted); cursor: pointer; padding: 3px 6px; border-radius: 4px; font-size: 13px; line-height: 1; transition: all 0.15s; }
.tree-actions button:hover { background: var(--surface-hover); border-color: var(--border); color: var(--text); }
.tree-actions button.danger:hover { color: var(--danger); border-color: rgba(220,38,38,0.3); }

/* Status badges for definitions */
.badge-active { background: rgba(22,163,74,0.15); color: var(--success); }
.badge-draft { background: rgba(107,114,128,0.15); color: var(--text-muted); }
.badge-deprecated { background: rgba(220,38,38,0.15); color: var(--danger); }
.badge-ideator { background: rgba(99,102,241,0.15); color: var(--primary); }
.badge-builder { background: rgba(37,99,235,0.15); color: var(--info); }
.badge-custom { background: rgba(217,119,6,0.15); color: var(--warning); }