:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --surface-2: #f0f3f7;
  --line: #dce1e8;
  --text: #1b1f24;
  --muted: #5f6b7a;
  --accent: #2f6fde;
  --accent-soft: #e4edfc;
  --accent-text: #ffffff;
  --seed: #a4570a;
  --seed-soft: #fcefd9;
  --pk: #a8730f;
  --fk: #2f6fde;
  --node-head: #eaf0f8;
  --edge: #9aa6b5;
  --dots: #d5dbe3;
  --warn: #9a3412;
  --shadow: 0 1px 2px rgb(16 24 40 / 6%), 0 2px 8px rgb(16 24 40 / 6%);
  --font: -apple-system, "Segoe UI", system-ui, Roboto, sans-serif;
  --mono: ui-monospace, "Cascadia Mono", Consolas, Menlo, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #181c22;
    --surface-2: #20252d;
    --line: #2e353f;
    --text: #e6e9ee;
    --muted: #97a2b0;
    --accent: #6b9bf0;
    --accent-soft: #1e2b44;
    --accent-text: #0f1216;
    --seed: #f0b25a;
    --seed-soft: #3a2a12;
    --pk: #e3b04b;
    --fk: #7ea8f3;
    --node-head: #222a35;
    --edge: #5d6876;
    --dots: #232931;
    --warn: #fb923c;
    --shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 2px 10px rgb(0 0 0 / 30%);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; margin: 0; }
body {
  display: flex;
  flex-direction: column;
  height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 var(--font);
  overflow: hidden;
}

code { font-family: var(--mono); font-size: 0.92em; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: 500 14px var(--font);
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { background: var(--surface-2); }
.btn:focus-visible, .chip:focus-visible, .table-list button:focus-visible, .link:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.primary:hover { filter: brightness(1.06); }
.icon-btn { width: 34px; padding: 0; font-size: 18px; }
.icon-btn svg { width: 18px; height: 18px; stroke: currentColor; stroke-width: 1.8; fill: none; stroke-linecap: round; }
.link { padding: 0; border: 0; background: none; color: var(--accent); font: inherit; cursor: pointer; text-align: left; }
.link:hover { text-decoration: underline; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 8px 16px;
  padding-top: max(8px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.brand { font-weight: 700; font-size: 15px; white-space: nowrap; }
.project-name { flex: 1; min-width: 0; overflow: hidden; color: var(--muted); text-overflow: ellipsis; white-space: nowrap; }
.actions { display: flex; gap: 8px; }
.warn-count { color: var(--warn); font-weight: 600; }

/* ---------- Layout ---------- */
.layout { position: relative; display: flex; flex: 1; min-height: 0; }

.tables-panel {
  display: flex;
  flex-direction: column;
  width: 270px;
  flex-shrink: 0;
  border-right: 1px solid var(--line);
  background: var(--surface);
}
.tables-head { display: flex; flex-direction: column; gap: 10px; padding: 12px; border-bottom: 1px solid var(--line); }
.tables-head input {
  width: 100%;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
.chips { display: flex; gap: 6px; }
.chip {
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  color: var(--muted);
  font: 500 13px var(--font);
  cursor: pointer;
}
.chip[aria-pressed="true"] { border-color: var(--accent); background: var(--accent-soft); color: var(--text); }
.chip[data-filter="seed"][aria-pressed="true"] { border-color: var(--seed); background: var(--seed-soft); }

.table-list { flex: 1; margin: 0; padding: 6px; overflow-y: auto; list-style: none; }
.table-list button {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 8px;
  border: 0;
  border-radius: 6px;
  background: none;
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.table-list button:hover { background: var(--surface-2); }
.table-list button[aria-current="true"] { background: var(--accent-soft); }
.t-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.t-meta { color: var(--muted); font-size: 12px; }
.list-empty { padding: 16px 8px; color: var(--muted); }

.badge {
  display: inline-block;
  padding: 1px 7px;
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
}
.badge.seed { background: var(--seed-soft); color: var(--seed); }
.badge.pk { background: var(--seed-soft); color: var(--pk); }
.badge.fk, .badge.key { background: var(--accent-soft); color: var(--fk); }
.badge.plain { background: var(--surface-2); color: var(--muted); }

/* ---------- Diagram ---------- */
.canvas {
  position: relative;
  flex: 1;
  min-width: 0;
  overflow: hidden;
  background-color: var(--bg);
  background-image: radial-gradient(var(--dots) 1px, transparent 1px);
  background-size: 22px 22px;
}
#diagram { display: block; width: 100%; height: 100%; touch-action: none; user-select: none; -webkit-user-select: none; cursor: grab; }
#diagram.panning { cursor: grabbing; }

.node { cursor: pointer; }
.node-box { fill: var(--surface); stroke: var(--line); stroke-width: 1; }
.node-head { fill: var(--node-head); }
.node-title { fill: var(--text); font: 600 13px var(--font); }
.node-badge { fill: var(--seed-soft); }
.node-badge-text { fill: var(--seed); font: 600 11px var(--font); }
.col-name { fill: var(--text); font: 13px var(--font); }
.col-name.nullable { fill: var(--muted); }
.col-type { fill: var(--muted); font: 12px var(--mono); }
.col-key { font: 700 9.5px var(--font); }
.col-key.pk { fill: var(--pk); }
.col-key.fk { fill: var(--fk); }
.col-empty { fill: var(--muted); font: italic 12px var(--font); }
.node.seeded .node-box { stroke: var(--seed); }
.node.selected .node-box { stroke: var(--accent); stroke-width: 2; }
.node.related .node-box { stroke: var(--accent); }
.node.dim { opacity: 0.28; }

.edge { fill: none; stroke: var(--edge); stroke-width: 1.4; }
.edge.hi { stroke: var(--accent); stroke-width: 2; }
.edge.dim { opacity: 0.2; }

.zoom {
  position: absolute;
  right: 16px;
  bottom: 16px;
  bottom: max(16px, env(safe-area-inset-bottom));
  display: flex;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 24px 16px;
  text-align: center;
  background: var(--bg);
}
.empty h1 { margin: 0 0 6px; font-size: 22px; }
.empty p { max-width: 520px; margin: 0 0 12px; color: var(--muted); }
.open-choices { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin: 8px 0 14px; }
.open-choices.stacked { flex-direction: column; align-items: stretch; }
.hint { color: var(--muted); font-size: 13px; }

/* ---------- Details ---------- */
.details {
  width: 380px;
  flex-shrink: 0;
  overflow-y: auto;
  border-left: 1px solid var(--line);
  background: var(--surface);
}
.details-head {
  position: sticky;
  top: 0;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.details-head h2 { margin: 0; font-size: 17px; overflow-wrap: anywhere; }
.details-head .sub { color: var(--muted); font-size: 12.5px; overflow-wrap: anywhere; }
.details-head > div { flex: 1; min-width: 0; }
.section { padding: 14px 16px; border-bottom: 1px solid var(--line); }
.section h3 { display: flex; align-items: center; gap: 8px; margin: 0 0 10px; font-size: 13px; letter-spacing: 0.02em; text-transform: uppercase; color: var(--muted); }
.section p { margin: 0; }
.comment { color: var(--muted); }

.col-list { margin: 0; padding: 0; list-style: none; }
.col-list li { padding: 7px 0; border-top: 1px solid var(--line); }
.col-list li:first-child { border-top: 0; padding-top: 0; }
.col-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px; }
.col-line strong { font-weight: 600; overflow-wrap: anywhere; }
.col-line code { color: var(--muted); overflow-wrap: anywhere; }
.col-extra { margin-top: 3px; color: var(--muted); font-size: 12.5px; overflow-wrap: anywhere; }

.rel-list { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; }
.rel-list li { overflow-wrap: anywhere; }
.rel-list .muted, .muted { color: var(--muted); }

.seed-wrap { max-height: 360px; overflow: auto; border: 1px solid var(--line); border-radius: 8px; }
.seed-table { border-collapse: collapse; font-size: 12.5px; min-width: 100%; }
.seed-table th, .seed-table td { max-width: 220px; padding: 6px 10px; border-bottom: 1px solid var(--line); overflow: hidden; text-align: left; text-overflow: ellipsis; white-space: nowrap; }
.seed-table th { position: sticky; top: 0; background: var(--surface-2); font-weight: 600; }
.seed-table td.null, .seed-table td.none { color: var(--muted); font-style: italic; }
.seed-table td.expr { color: var(--fk); font-family: var(--mono); }
.seed-note { margin-top: 8px; color: var(--muted); font-size: 12.5px; overflow-wrap: anywhere; }

/* ---------- Dialogs and toast ---------- */
.dialog {
  width: min(420px, calc(100vw - 32px));
  max-height: calc(100dvh - 48px);
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow);
}
.dialog.wide { width: min(640px, calc(100vw - 32px)); }
.dialog::backdrop { background: rgb(0 0 0 / 35%); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.dialog-head h2 { margin: 0; font-size: 17px; }
.file-list { margin: 8px 0; padding: 0; list-style: none; }
.file-list label { display: flex; align-items: center; gap: 10px; padding: 6px 0; overflow-wrap: anywhere; cursor: pointer; }
.file-list input { width: 16px; height: 16px; flex-shrink: 0; }
.warn-list { margin: 6px 0 0; padding-left: 18px; color: var(--warn); font-size: 13px; }
.warn-list li { overflow-wrap: anywhere; }
#warnings h3 { margin: 14px 0 0; font-size: 14px; }

.gh-form { display: flex; flex-direction: column; gap: 10px; }
.gh-form .hint { margin: -4px 0 0; }
.field { display: flex; flex-direction: column; gap: 4px; font-weight: 600; font-size: 13px; }
.field .muted { font-weight: 400; }
.field input {
  width: 100%;
  min-height: 38px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: 400 15px var(--font);
}
.field input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: var(--accent); }
#ghTokenEntry { display: flex; flex-direction: column; gap: 8px; }
.check { display: flex; align-items: center; gap: 8px; font-size: 13.5px; cursor: pointer; }
.check input { width: 16px; height: 16px; }
.token-saved { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; padding: 10px 12px; border-radius: 8px; background: var(--accent-soft); font-size: 13.5px; }
.token-help { color: var(--muted); font-size: 13px; }
.token-help summary { color: var(--accent); cursor: pointer; }
.token-help ol { margin: 8px 0; padding-left: 20px; }
.token-help li { margin: 3px 0; }
.token-help a { color: var(--accent); }
.token-help p { margin: 0; }
.gh-status { min-height: 1.4em; margin: 0; color: var(--muted); font-size: 13.5px; overflow-wrap: anywhere; }
.gh-status.error { color: var(--warn); }
.dialog-actions { display: flex; justify-content: flex-end; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  max-width: calc(100vw - 32px);
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--text);
  color: var(--bg);
  transform: translateX(-50%);
  box-shadow: var(--shadow);
}

.only-mobile { display: none; }

/* ---------- Phones ---------- */
@media (max-width: 767px) {
  .topbar { gap: 8px; padding-left: 12px; padding-right: 12px; }
  .only-mobile { display: inline-flex; }
  .brand { font-size: 14px; }
  .project-name { font-size: 13px; }
  .btn { padding: 0 10px; }

  .tables-panel {
    position: absolute;
    inset: 0 auto 0 0;
    z-index: 5;
    width: min(320px, 86vw);
    box-shadow: var(--shadow);
    transform: translateX(-102%);
    transition: transform 0.18s ease;
  }
  .tables-panel.open { transform: none; }

  .details {
    position: absolute;
    inset: auto 0 0 0;
    z-index: 6;
    width: auto;
    max-height: 68%;
    border-left: 0;
    border-top: 1px solid var(--line);
    border-radius: 14px 14px 0 0;
    box-shadow: 0 -4px 20px rgb(0 0 0 / 18%);
    padding-bottom: env(safe-area-inset-bottom);
  }
  .zoom { right: 12px; bottom: 12px; }
}