/* PartQ UI — shadcn/ui-style components in plain CSS.
   Brand palette from the rbx design system (Colors.swift): brand 50–800, neutral 50–900. */

:root {
  /* rbx brand */
  --brand-50:  #EEF0FA;
  --brand-100: #E1E5F6;
  --brand-500: #647DCF;
  --brand-600: #4A64B2;
  --brand-700: #3A4F8F;
  --brand-800: #2B3B6D;
  /* rbx neutral */
  --n-50: #FAFAFA; --n-100: #F5F5F5; --n-200: #E5E5E5; --n-300: #D4D4D4; --n-400: #A3A3A3;
  --n-500: #737373; --n-600: #525252; --n-700: #404040; --n-800: #262626; --n-900: #171717;

  /* shadcn semantic tokens */
  --background: #ffffff;
  --foreground: var(--n-900);
  --card: #ffffff;
  --card-foreground: var(--n-900);
  --popover: #ffffff;
  --primary: var(--brand-600);
  --primary-hover: var(--brand-700);
  --primary-foreground: #ffffff;
  --secondary: var(--n-100);
  --secondary-foreground: var(--n-900);
  --muted: var(--n-100);
  --muted-foreground: var(--n-500);
  --accent: var(--brand-50);
  --accent-foreground: var(--brand-800);
  --destructive: #DC2626;
  --destructive-foreground: #ffffff;
  --success: #15803d;
  --warning: #b45309;
  --warning-bg: #fffbeb;
  --warning-border: #fde68a;
  --border: var(--n-200);
  --input: var(--n-200);
  --ring: var(--brand-500);
  --radius: 0.5rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.08), 0 1px 2px -1px rgb(0 0 0 / 0.08);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0a0a0a;
    --foreground: var(--n-50);
    --card: var(--n-900);
    --card-foreground: var(--n-50);
    --popover: var(--n-900);
    --primary: var(--brand-500);
    --primary-hover: var(--brand-600);
    --primary-foreground: #ffffff;
    --secondary: var(--n-800);
    --secondary-foreground: var(--n-50);
    --muted: var(--n-800);
    --muted-foreground: var(--n-400);
    --accent: rgb(74 100 178 / 0.18);
    --accent-foreground: var(--brand-100);
    --destructive: #EF4444;
    --success: #4ade80;
    --warning: #fbbf24;
    --warning-bg: rgb(180 83 9 / 0.12);
    --warning-border: rgb(251 191 36 / 0.35);
    --border: var(--n-800);
    --input: var(--n-700);
    --ring: var(--brand-500);
  }
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  background: var(--background);
  color: var(--foreground);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.85em; }
code { background: var(--muted); padding: 0.1rem 0.35rem; border-radius: calc(var(--radius) - 4px); }
h1, h2, h3 { margin: 0; letter-spacing: -0.01em; }
:focus-visible { outline: none; box-shadow: 0 0 0 2px var(--background), 0 0 0 4px var(--ring); }

/* ---------- layout ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 1.5rem;
  height: 3.5rem; padding: 0 1.5rem;
  background: color-mix(in srgb, var(--background) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 0.5rem; font-weight: 600; font-size: 1rem; }
.brand-mark {
  width: 1.5rem; height: 1.5rem; border-radius: 0.375rem;
  background: var(--primary); color: var(--primary-foreground);
  display: grid; place-items: center; font-size: 0.75rem; font-weight: 700;
}
.topbar .spacer { flex: 1; }
.topbar .meta { color: var(--muted-foreground); font-size: 0.8125rem; }
main { max-width: 1200px; margin: 0 auto; padding: 1.5rem; }
.panel { display: none; }
.panel.active { display: block; }
.page-title { font-size: 1.5rem; font-weight: 600; }
.page-desc { color: var(--muted-foreground); margin: 0.25rem 0 1.25rem; }

/* ---------- tabs (shadcn Tabs) ---------- */
.tabs-list {
  display: inline-flex; align-items: center; gap: 0.125rem;
  height: 2.25rem; padding: 0.25rem;
  background: var(--muted); color: var(--muted-foreground);
  border-radius: var(--radius);
}
.tabs-trigger {
  all: unset; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  height: 100%; padding: 0 0.875rem;
  border-radius: calc(var(--radius) - 2px);
  font-size: 0.875rem; font-weight: 500; color: inherit;
  transition: background .15s, color .15s;
}
.tabs-trigger:hover { color: var(--foreground); }
.tabs-trigger[aria-selected="true"] {
  background: var(--background); color: var(--foreground); box-shadow: var(--shadow-sm);
}
.tabs-trigger:focus-visible { box-shadow: 0 0 0 2px var(--ring); }

/* ---------- card ---------- */
.card {
  background: var(--card); color: var(--card-foreground);
  border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.card-header { padding: 1.25rem 1.25rem 0; }
.card-title { font-size: 1rem; font-weight: 600; }
.card-description { color: var(--muted-foreground); font-size: 0.875rem; margin-top: 0.25rem; }
.card-content { padding: 1.25rem; }
.card-footer { padding: 0 1.25rem 1.25rem; display: flex; gap: 0.5rem; align-items: center; }

/* ---------- form controls (shadcn Input / Select / Textarea / Label) ---------- */
.label { display: block; font-size: 0.875rem; font-weight: 500; line-height: 1; margin-bottom: 0.5rem; }
.label .opt { color: var(--muted-foreground); font-weight: 400; }
.input, .select, .textarea {
  display: block; width: 100%;
  height: 2.5rem; padding: 0 0.75rem;
  font: inherit; font-size: 0.875rem; color: var(--foreground);
  background: var(--background);
  border: 1px solid var(--input); border-radius: calc(var(--radius) - 2px);
  box-shadow: var(--shadow-sm);
  transition: border-color .15s, box-shadow .15s;
}
.input::placeholder, .textarea::placeholder { color: var(--muted-foreground); }
.input:focus, .select:focus, .textarea:focus {
  outline: none; border-color: var(--ring);
  box-shadow: 0 0 0 1px var(--ring);
}
.input:disabled, .select:disabled { opacity: .5; cursor: not-allowed; }
.textarea { height: auto; min-height: 5rem; padding: 0.5rem 0.75rem; resize: vertical; }
.select {
  appearance: none; padding-right: 2rem; cursor: pointer;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23737373' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'><path d='m6 9 6 6 6-6'/></svg>");
  background-repeat: no-repeat; background-position: right 0.6rem center;
}
.input[type="file"] { padding: 0.45rem 0.75rem; cursor: pointer; }
.input[type="file"]::file-selector-button {
  font: inherit; font-size: 0.8125rem; font-weight: 500; margin-right: 0.75rem;
  border: 0; background: transparent; color: var(--foreground); cursor: pointer;
}
.input-sm, .select-sm { height: 2.25rem; }
.field { display: flex; flex-direction: column; }
.field .hint { min-height: 1rem; margin-top: 0.375rem; font-size: 0.75rem; color: var(--muted-foreground); }
.hint.err { color: var(--destructive); }
.hint.warn { color: var(--warning); }
.hint.ok { color: var(--success); }

/* search input with icon */
.search-wrap { position: relative; flex: 1; }
.search-wrap svg { position: absolute; left: 0.75rem; top: 50%; transform: translateY(-50%); color: var(--muted-foreground); pointer-events: none; }
.search-wrap .input { padding-left: 2.25rem; height: 2.75rem; font-size: 0.9375rem; }

/* ---------- buttons (shadcn Button) ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  height: 2.5rem; padding: 0 1rem; white-space: nowrap;
  font: inherit; font-size: 0.875rem; font-weight: 500; line-height: 1;
  border-radius: calc(var(--radius) - 2px); border: 1px solid transparent;
  cursor: pointer; user-select: none;
  transition: background .15s, color .15s, border-color .15s, opacity .15s;
}
.btn:disabled { opacity: .5; pointer-events: none; }
.btn-primary { background: var(--primary); color: var(--primary-foreground); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: var(--secondary); color: var(--secondary-foreground); }
.btn-secondary:hover { background: color-mix(in srgb, var(--secondary) 80%, var(--foreground) 6%); }
.btn-outline { background: var(--background); color: var(--foreground); border-color: var(--input); box-shadow: var(--shadow-sm); }
.btn-outline:hover { background: var(--accent); color: var(--accent-foreground); }
.btn-ghost { background: transparent; color: var(--foreground); }
.btn-ghost:hover { background: var(--accent); color: var(--accent-foreground); }
.btn-destructive { background: var(--destructive); color: var(--destructive-foreground); }
.btn-destructive:hover { filter: brightness(0.92); }
.btn-sm { height: 2.25rem; padding: 0 0.75rem; font-size: 0.8125rem; }
.btn-icon { width: 2.25rem; padding: 0; }
.btn svg { width: 1rem; height: 1rem; }

/* ---------- badge ---------- */
.badge {
  display: inline-flex; align-items: center;
  padding: 0.125rem 0.625rem; border-radius: 9999px;
  font-size: 0.75rem; font-weight: 600; line-height: 1.25rem; white-space: nowrap;
  border: 1px solid transparent;
}
.badge-default { background: var(--primary); color: var(--primary-foreground); }
.badge-secondary { background: var(--secondary); color: var(--secondary-foreground); }
.badge-outline { border-color: var(--border); color: var(--foreground); }
.badge-accent { background: var(--accent); color: var(--accent-foreground); }

/* ---------- table (shadcn Table) ---------- */
.table-wrap { position: relative; width: 100%; overflow: auto; border: 1px solid var(--border); border-radius: var(--radius); background: var(--card); }
.table { width: 100%; caption-side: bottom; border-collapse: collapse; font-size: 0.875rem; }
.table thead tr { border-bottom: 1px solid var(--border); }
.table th {
  height: 2.75rem; padding: 0 1rem; text-align: left; vertical-align: middle;
  font-weight: 500; color: var(--muted-foreground); white-space: nowrap;
}
.table td { padding: 0.75rem 1rem; vertical-align: middle; }
.table tbody tr { border-bottom: 1px solid var(--border); transition: background .1s; }
.table tbody tr:last-child { border-bottom: 0; }
.table tbody tr:hover { background: color-mix(in srgb, var(--muted) 60%, transparent); }
.table td.pn { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.8125rem; white-space: nowrap; font-weight: 500; }
.table td.desc { max-width: 24rem; color: var(--muted-foreground); }
.table td.links { white-space: nowrap; }
.table td.links a { margin-right: 0.75rem; font-weight: 500; }
.table td.empty { text-align: center; color: var(--muted-foreground); padding: 3rem 1rem; }
.table .muted { color: var(--muted-foreground); }
.table .sub-line { font-size: 0.75rem; margin-top: 0.125rem; white-space: nowrap; }
.chips { display: flex; flex-wrap: wrap; gap: 0.25rem; margin-top: 0.25rem; }
.chip { font-size: 0.6875rem; line-height: 1.4; padding: 0.0625rem 0.375rem; border-radius: var(--radius);
  background: var(--muted); color: var(--muted-foreground); white-space: nowrap; }
.chip b { font-weight: 600; }

/* ---------- expandable result rows ---------- */
.table th.expander, .table td.expander { width: 2rem; padding-right: 0; text-align: center; }
.table tbody tr.row-summary { cursor: pointer; }
.table tbody tr.row-summary:focus-visible { outline: 2px solid var(--ring, currentColor); outline-offset: -2px; }
.table tbody tr.row-summary.open { background: color-mix(in srgb, var(--muted) 60%, transparent); border-bottom: 0; }
.chevron { display: inline-block; width: 0; height: 0; border-style: solid;
  border-width: 0.3125rem 0 0.3125rem 0.375rem; border-color: transparent transparent transparent var(--muted-foreground);
  transition: transform .12s ease; }
.row-summary.open .chevron { transform: rotate(90deg); }
.table tbody tr.row-detail[hidden] { display: none; }
.table tbody tr.row-detail:hover { background: none; }
.table tbody tr.row-detail > td { padding: 0 1rem 1rem 3rem;
  background: color-mix(in srgb, var(--muted) 60%, transparent); }
.detail { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 0.75rem 1.5rem; }
.detail-group.detail-wide { grid-column: 1 / -1; }
.detail-group h4 { margin: 0 0 0.25rem; font-size: 0.6875rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted-foreground); }
.detail-group dl { margin: 0; }
.detail-item { display: flex; gap: 0.5rem; align-items: baseline; padding: 0.0625rem 0; font-size: 0.8125rem; }
.detail-item dt { flex: 0 0 7.5rem; color: var(--muted-foreground); }
.detail-item dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
.detail-item dd code { font-size: 0.75rem; }
/* a timestamp reads as one value: never broken across lines */
.when { white-space: nowrap; overflow-wrap: normal; }
.detail-wide .detail-item dt { flex-basis: 9rem; }

/* ---------- toolbar / filters ---------- */
.toolbar { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1rem; }
.toolbar-row { display: flex; gap: 0.5rem; }
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.filters .select, .filters .input { width: auto; min-width: 9rem; }
.filters .field-inline { display: flex; align-items: center; gap: 0.375rem; font-size: 0.8125rem; color: var(--muted-foreground); }
.results-meta { display: flex; align-items: center; justify-content: space-between; margin: 0 0 0.75rem; color: var(--muted-foreground); font-size: 0.875rem; min-height: 1.5rem; }
.results-meta.err { color: var(--destructive); }

/* ---------- pagination ---------- */
.pagination { display: flex; align-items: center; justify-content: flex-end; gap: 0.5rem; margin-top: 1rem; color: var(--muted-foreground); font-size: 0.875rem; }
.pagination span { margin: 0 0.5rem; }

/* ---------- alerts (shadcn Alert) ---------- */
.alert {
  position: relative; display: grid; grid-template-columns: 1.25rem 1fr; gap: 0.25rem 0.75rem;
  width: 100%; padding: 0.875rem 1rem;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--card); font-size: 0.875rem;
}
.alert svg { width: 1rem; height: 1rem; margin-top: 0.125rem; grid-row: span 2; }
.alert-title { font-weight: 600; line-height: 1.25rem; }
.alert-desc { color: var(--muted-foreground); grid-column: 2; }
.alert-success { border-color: color-mix(in srgb, var(--success) 40%, transparent); color: var(--success); }
.alert-success .alert-desc { color: var(--success); }
.alert-destructive { border-color: color-mix(in srgb, var(--destructive) 50%, transparent); color: var(--destructive); }
.alert-destructive .alert-desc { color: var(--destructive); }
.alert-warning { background: var(--warning-bg); border-color: var(--warning-border); color: var(--warning); }
.alert-warning .alert-desc { color: inherit; }
.alert-list { margin: 0.5rem 0 0; padding-left: 1.125rem; }
.alert-list li { margin: 0.25rem 0; color: var(--foreground); }
.alert .actions { grid-column: 2; margin-top: 0.75rem; display: flex; gap: 0.5rem; }
.status { margin-top: 1rem; }
.status:empty { display: none; }

/* ---------- modal (shadcn Dialog) ---------- */
.modal {
  padding: 0; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--popover); color: var(--foreground);
  width: min(28rem, calc(100vw - 2rem)); box-shadow: var(--shadow);
}
.modal::backdrop { background: rgb(0 0 0 / 0.5); }
.modal-body { display: grid; grid-template-columns: 1.5rem 1fr; gap: 0.25rem 0.75rem; padding: 1.25rem 1.25rem 0; }
.modal-icon { grid-row: span 2; display: flex; }
.modal-icon svg { width: 1.5rem; height: 1.5rem; }
.modal-title { font-size: 1rem; font-weight: 600; line-height: 1.5rem; }
.modal-desc { grid-column: 2; margin: 0; font-size: 0.875rem; color: var(--muted-foreground); overflow-wrap: anywhere; }
.modal-desc:empty { display: none; }
.modal-footer { display: flex; justify-content: flex-end; padding: 1.25rem; }
.modal-ok .modal-title, .modal-ok .modal-icon { color: var(--success); }
.modal-err .modal-title, .modal-err .modal-icon { color: var(--destructive); }

/* ---------- progress (shadcn Progress) ---------- */
.progress { position: relative; height: 0.5rem; width: 100%; overflow: hidden; border-radius: 9999px; background: var(--secondary); }
.progress-indicator { height: 100%; width: 0; background: var(--primary); transition: width .3s ease; border-radius: 9999px; }
.progress-indicator.done { background: var(--success); }
.progress-indicator.failed { background: var(--destructive); }
.progress-text { margin-top: 0.5rem; font-size: 0.8125rem; color: var(--muted-foreground); }
.error-list { margin: 0.5rem 0 0; padding-left: 1.125rem; font-size: 0.75rem; color: var(--destructive); max-height: 10rem; overflow: auto; }

/* ---------- upload layout ---------- */
.upload-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); gap: 1.25rem; align-items: start; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-grid .span2 { grid-column: 1 / -1; }
.separator { height: 1px; background: var(--border); margin: 1.25rem 0; }
.kbd { font-family: ui-monospace, monospace; font-size: 0.75rem; border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 0.25rem; padding: 0 0.375rem; color: var(--muted-foreground); }
.text-muted { color: var(--muted-foreground); }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .upload-grid, .form-grid { grid-template-columns: 1fr; }
  main { padding: 1rem; }
  .topbar { padding: 0 1rem; }
  .filters .select, .filters .input { flex: 1 1 8rem; }
}

/* ---------- DigiKey ---------- */
.dk-card { margin-bottom: 1.25rem; }
.dk-facts { display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; margin: 0.875rem 0 0; }
.dk-fact dt { font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted-foreground); margin: 0; }
.dk-fact dd { margin: 0.125rem 0 0; font-size: 0.8125rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
/* the DigiKey part number sits under the manufacturer's, which is the one people quote */
.dk-pn { display: block; font-weight: 400; color: var(--muted-foreground); font-size: 0.6875rem; }
.table td.num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.table td.num.in-stock { color: var(--success); }

/* ---------- OAuth callback page ---------- */
/* Rendered outside the SPA, mid-redirect, so it centres itself on a bare body. */
.callback-page { display: grid; place-items: center; min-height: 100vh; margin: 0; }
.callback-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 2rem 2.5rem; max-width: 30rem; text-align: center; }
.callback-card h1 { font-size: 1.125rem; margin: 0 0 0.5rem; }
.callback-card p { color: var(--muted-foreground); font-size: 0.875rem; margin: 0 0 1.25rem; }
.callback-card.is-err h1 { color: var(--destructive); }