:root {
  color-scheme: light;
  --page: #f9f9f7;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d68;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.10);
  --accent: #2a78d6;
  --accent-ink: #fff;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --good: #0ca30c;
  --good-text: #006300;
  --warning: #fab219;
  --critical: #d03b3b;
  --critical-text: #b42f2f;
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --surface-2: #262624;
    --ink: #f0efec;
    --ink-2: #c3c2b7;
    --muted: #9a988f;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, 0.10);
    --accent: #3987e5;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --good-text: #0ca30c;
    --critical-text: #e66767;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #262624;
  --ink: #f0efec;
  --ink-2: #c3c2b7;
  --muted: #9a988f;
  --grid: #2c2c2a;
  --axis: #383835;
  --border: rgba(255, 255, 255, 0.10);
  --accent: #3987e5;
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --good-text: #0ca30c;
  --critical-text: #e66767;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.4 var(--font);
}

h1, h2, h3 { margin: 0; font-weight: 600; }

a { color: var(--accent); }

/* ---- Buttons ---- */

.btn {
  font: inherit;
  font-size: 14px;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--ink-2); }
.btn[aria-pressed="true"] { background: var(--ink); color: var(--page); border-color: var(--ink); }
.btn:focus-visible, .icon-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.icon-btn {
  font: inherit;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 0;
  background: transparent;
  color: var(--ink-2);
  cursor: pointer;
  display: inline-grid;
  place-items: center;
}
.icon-btn:hover { background: var(--surface-2); color: var(--ink); }
.icon-btn svg { width: 16px; height: 16px; }

/* ---- Top bar ---- */

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 16px;
}
.topbar h1 { font-size: 20px; }
.topbar .actions { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.topbar form { margin: 0; }

main { padding: 0 8px 24px; }

.empty { text-align: center; color: var(--ink-2); padding: 48px 16px; }

/* ---- Tiles ---- */

.grid-stack-item-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.tile-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px 4px 14px;
  min-height: 40px;
}
.tile-title { font-size: 14px; font-weight: 600; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tile-meta { font-size: 12px; color: var(--muted); white-space: nowrap; }
.tile-meta.stale { color: var(--critical-text); }
.tile-tools { display: none; gap: 2px; }
.editing .tile-tools { display: inline-flex; }
.editing .grid-stack-item-content { cursor: move; border-style: dashed; }

.tile-body {
  flex: 1;
  min-height: 0;
  overflow: auto;
  padding: 4px 14px 14px;
}

.tile-state { color: var(--ink-2); font-size: 14px; padding: 8px 0; }
.tile-state.error { color: var(--critical-text); }
.tile-state.error::before { content: "⚠ "; }

/* GridStack placeholder while dragging */
.grid-stack > .grid-stack-placeholder > .placeholder-content {
  background: var(--surface-2);
  border: 1px dashed var(--axis);
  border-radius: var(--radius);
}

/* ---- Shared widget building blocks (usable from any widget.js) ---- */

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 12px; }
.stat-label { font-size: 12px; color: var(--ink-2); }
.stat-value { font-size: 28px; font-weight: 600; line-height: 1.15; }
.stat-sub { font-size: 12px; color: var(--muted); }

.big-stat { line-height: 1.15; }
.big-value { font-size: 44px; font-weight: 600; letter-spacing: -0.01em; }
.big-label { font-size: 13px; color: var(--ink-2); margin-top: 2px; }
.big-sub { font-size: 13px; color: var(--muted); }
.big-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)); gap: 12px; }
.big-row .big-value { font-size: 36px; }
.tile-body > .chart-caption { margin-top: 2px; }

.tile-body > * + * { margin-top: 18px; }
.section-title { font-size: 12px; font-weight: 600; color: var(--ink-2); text-transform: uppercase; letter-spacing: 0.04em; margin: 0 0 8px; }

.split { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px 24px; }

.chart-box { position: relative; width: 100%; }

.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: 12px; color: var(--ink-2); margin-bottom: 6px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-key { width: 14px; height: 2px; border-radius: 1px; }

.note { font-size: 12px; color: var(--muted); }

table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th { text-align: left; font-weight: 600; color: var(--ink-2); font-size: 12px; padding: 4px 6px 4px 0; border-bottom: 1px solid var(--grid); }
table.data td { padding: 5px 6px 5px 0; border-bottom: 1px solid var(--grid); vertical-align: top; }
table.data .num { text-align: right; font-variant-numeric: tabular-nums; }

.muted { color: var(--muted); }

/* ---- Dialogs ---- */

dialog {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
  padding: 20px;
  width: min(440px, calc(100vw - 32px));
}
dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
dialog h2 { font-size: 17px; margin-bottom: 12px; }
dialog form { margin: 0; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.picker-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.picker-list button {
  width: 100%;
  text-align: left;
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
}
.picker-list button:hover { background: var(--surface-2); }
.picker-list strong { display: block; }
.picker-list span { font-size: 13px; color: var(--ink-2); }

.field { display: grid; gap: 4px; margin-bottom: 12px; }
.field label { font-size: 13px; font-weight: 600; }
.field input, .field select, .login input {
  font: inherit;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--axis);
  background: var(--page);
  color: var(--ink);
}
.field .hint { font-size: 12px; color: var(--muted); }
.field .hint.error { color: var(--critical-text); }
.field input:not([type="checkbox"]), .field select { width: 100%; min-width: 0; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  background: var(--ink);
  color: var(--page);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  max-width: calc(100vw - 32px);
}

/* ---- Login ---- */

.login-page { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.login { width: min(340px, 100%); background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 24px; }
.login h1 { font-size: 20px; margin-bottom: 16px; }
.login form { display: grid; gap: 8px; }
.login label { font-size: 13px; font-weight: 600; }
.login button { margin-top: 8px; }
.form-error { color: var(--critical-text); font-size: 14px; margin: 0; }

@media (max-width: 700px) {
  .topbar h1 { font-size: 18px; }
  .stat-value { font-size: 24px; }
}