:root {
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #f0f2f8;
  --text: #1a2233;
  --muted: #667085;
  --border: #e2e6ef;
  --primary: #2f6bff;
  --primary-ink: #ffffff;
  --danger: #d64545;
  --shadow: 0 1px 3px rgba(20,30,60,.08), 0 8px 24px rgba(20,30,60,.06);
  --radius: 12px;
}
:root[data-theme="dark"] {
  --bg: #0f1420;
  --surface: #171d2b;
  --surface-2: #1e2637;
  --text: #e8ecf5;
  --muted: #97a2b8;
  --border: #2a3346;
  --primary: #5b8bff;
  --shadow: 0 1px 3px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.3);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* Header */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 1rem 1.5rem;
  background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10; flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: .75rem; }
.logo { font-size: 1.8rem; }
.app-header h1 { margin: 0; font-size: 1.25rem; }
.tagline { margin: 0; color: var(--muted); font-size: .8rem; }
.header-actions { display: flex; gap: .5rem; flex-wrap: wrap; align-items: center; }

/* Backup reminder chip */
.backup-reminder {
  font: inherit; cursor: pointer; font-size: .8rem; font-weight: 600;
  color: #8a5a00; background: #fff2d9; border: 1px solid #f0d089;
  padding: .4rem .7rem; border-radius: 999px; display: inline-flex; align-items: center; gap: .35rem;
}
.backup-reminder[hidden] { display: none; }
.backup-reminder:hover { filter: brightness(.97); }
:root[data-theme="dark"] .backup-reminder { color: #e6b955; background: #3a2c0e; border-color: #5c4a1c; }

.container { max-width: 1080px; margin: 0 auto; padding: 1.5rem; }

/* Buttons */
.btn {
  font: inherit; cursor: pointer; border: 1px solid var(--border);
  background: var(--surface); color: var(--text);
  padding: .5rem .9rem; border-radius: 8px; transition: .15s;
}
.btn:hover { border-color: var(--primary); }
.btn-primary { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.btn-primary:hover { filter: brightness(1.06); }
.btn-ghost { background: transparent; }
.btn-danger { color: var(--danger); border-color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: .3rem .6rem; font-size: .85rem; }

/* Summary */
.summary-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; box-shadow: var(--shadow); }
.stat .value { font-size: 1.6rem; font-weight: 700; }
.stat .label { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; }

/* Controls */
.controls { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; margin-bottom: 1.25rem; }
.controls input, .controls select { padding: .5rem .7rem; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text); font: inherit; }
.controls #search { flex: 1; min-width: 200px; }
.view-toggle { display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-left: auto; }
.tab { background: var(--surface); border: none; padding: .5rem .9rem; cursor: pointer; color: var(--muted); font: inherit; }
.tab.active { background: var(--primary); color: #fff; }

/* Cards */
.cards { display: grid; grid-template-columns: repeat(auto-fill,minmax(280px,1fr)); gap: 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem; box-shadow: var(--shadow); cursor: pointer; transition: .15s; display: flex; flex-direction: column; gap: .5rem; }
.card:hover { transform: translateY(-2px); border-color: var(--primary); }
.card-top { display: flex; justify-content: space-between; align-items: start; gap: .5rem; }
.card h3 { margin: 0; font-size: 1.05rem; }
.card .provider { color: var(--muted); font-size: .85rem; }
.badge { font-size: .72rem; padding: .15rem .5rem; border-radius: 999px; white-space: nowrap; }
.badge.cat { background: var(--surface-2); color: var(--muted); }
.status { font-size: .72rem; padding: .15rem .5rem; border-radius: 999px; font-weight: 600; }
.status.active { background: #e3f6ea; color: #12703a; }
.status.pending { background: #fff2d9; color: #8a5a00; }
.status.lapsed { background: #fde3e3; color: #9c2626; }
:root[data-theme="dark"] .status.active { background: #113322; color: #59d391; }
:root[data-theme="dark"] .status.pending { background: #3a2c0e; color: #e6b955; }
:root[data-theme="dark"] .status.lapsed { background: #3a1717; color: #f08a8a; }
.card .purpose { font-size: .88rem; color: var(--text); }
.card .meta { display: flex; justify-content: space-between; font-size: .82rem; color: var(--muted); margin-top: auto; padding-top: .5rem; border-top: 1px solid var(--border); }
.card .rel-count { font-size: .78rem; color: var(--primary); }
.renewal-soon { color: var(--danger); font-weight: 600; }

.empty { text-align: center; padding: 3rem 1rem; color: var(--muted); }

/* Graph */
.graph-hint { color: var(--muted); font-size: .85rem; }
#graph-wrap { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
#graph { width: 100%; height: 540px; display: block; touch-action: none; }
.node-circle { fill: var(--primary); stroke: var(--surface); stroke-width: 3; cursor: grab; }
.node-label { font-size: 12px; fill: var(--text); pointer-events: none; }
.edge-line { stroke: var(--muted); stroke-width: 1.5; opacity: .6; }
.edge-label { font-size: 10px; fill: var(--muted); pointer-events: none; }

/* Dialog */
dialog { border: none; border-radius: var(--radius); padding: 0; max-width: 640px; width: 92%; background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
dialog::backdrop { background: rgba(10,15,30,.5); }
#editor-form { padding: 1.5rem; }
#editor-form h2 { margin: 0 0 1rem; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: .75rem 1rem; }
#editor-form label { display: flex; flex-direction: column; font-size: .82rem; color: var(--muted); gap: .25rem; margin-bottom: .75rem; }
#editor-form input, #editor-form select, #editor-form textarea {
  font: inherit; padding: .5rem .6rem; border: 1px solid var(--border); border-radius: 8px;
  background: var(--surface-2); color: var(--text);
}
.inline { display: flex; gap: .4rem; }
.inline input { flex: 1; }
.relations { border: 1px solid var(--border); border-radius: 8px; padding: .75rem; margin: .5rem 0 1rem; }
.relations legend { font-size: .82rem; color: var(--muted); padding: 0 .4rem; }
.relation-row { display: flex; gap: .5rem; margin-bottom: .5rem; align-items: center; }
.relation-row select { flex: 1; font: inherit; padding: .4rem; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); color: var(--text); }
.relation-row .remove { color: var(--danger); background: none; border: none; cursor: pointer; font-size: 1.1rem; }
.editor-actions { display: flex; gap: .5rem; align-items: center; margin-top: 1rem; }
.spacer { flex: 1; }

/* Confirm dialog */
#confirm-dialog { max-width: 420px; }
.dlg-body { padding: 1.5rem; }
.dlg-body p { margin: 0 0 1.25rem; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: 1.5rem; transform: translate(-50%, 1rem);
  background: var(--text); color: var(--surface);
  padding: .7rem 1.1rem; border-radius: 10px; box-shadow: var(--shadow);
  font-size: .9rem; font-weight: 500; max-width: 90vw; text-align: center;
  opacity: 0; pointer-events: none; transition: opacity .2s, transform .2s; z-index: 100;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

@media (max-width: 560px) {
  .grid-2 { grid-template-columns: 1fr; }
  .view-toggle { margin-left: 0; width: 100%; }
  .tab { flex: 1; }
}