/*
 * The admin pages.
 *
 * These are the author's side of the server, so they borrow the look of the
 * course viewer the builder skill ships: grey paper rather than white, white
 * cards held by a single hairline, one blue accent, monospace for ids and
 * storage keys, serif for anything meant to be read. Students never see these
 * pages -- they only ever see the player.
 */

:root {
  --paper:   #E9EDF0;
  --ink:     #16212B;
  --muted:   #5C6E7E;
  --hair:    #D3DBE2;
  --surface: #FFFFFF;
  --select:  #1F5FA8;
  --warn:    #B4641E;
  --ok:      #2E7D5B;
  --bad:     #B03A48;

  /* the node type colours of the viewer, so a type reads the same in both */
  --t-static-md:    #4A6E8A;
  --t-static-html:  #3F7F76;
  --t-dynamic-md:   #7A4FB0;
  --t-dynamic-html: #A24897;
  --t-quiz:         #2E7D5B;
  --t-form:         #1F6FA8;
  --t-bool:         #B03A48;
  --t-choice:       #5B5BA8;
  --t-score:        #8A7A1E;
  --t-noul:         #1F7A8C;

  --sans:  system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono:  ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --serif: Charter, "Bitstream Charter", "Iowan Old Style", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 14px/1.55 var(--sans);
  -webkit-font-smoothing: antialiased;
}

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

header {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 14px;
  height: 54px; padding: 0 16px;
  background: rgba(233, 237, 240, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--hair);
}
header h1 { margin: 0; font-size: 15px; font-weight: 600; }
header .meta { font: 11px var(--mono); color: var(--muted); }
header nav { margin-left: auto; display: flex; gap: 8px; align-items: center; }

main { max-width: 1040px; margin: 0 auto; padding: 22px 16px 60px; }

h2 { margin: 0 0 4px; font-size: 19px; font-weight: 600; }
h3 { margin: 0 0 10px; font-size: 11.5px; font-weight: 600; color: var(--muted);
     text-transform: uppercase; letter-spacing: .06em; }
p.lead { margin: 0 0 18px; color: var(--muted); }

.btn {
  display: inline-block;
  padding: 7px 11px;
  font: 13px var(--sans);
  color: var(--ink); text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--hair); border-radius: 7px;
  cursor: pointer;
}
.btn:hover { border-color: #B4C2CD; }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--select); border-color: var(--select); color: #fff; }
.btn.danger  { color: var(--bad); }

.card {
  background: var(--surface);
  border: 1px solid var(--hair); border-radius: 9px;
  padding: 14px 15px;
  margin-bottom: 12px;
}
.card > :last-child { margin-bottom: 0; }

table { width: 100%; border-collapse: collapse; background: var(--surface);
        border: 1px solid var(--hair); border-radius: 9px; overflow: hidden; }
th { text-align: left; font: 11.5px var(--sans); font-weight: 600; color: var(--muted);
     text-transform: uppercase; letter-spacing: .05em;
     padding: 9px 12px; border-bottom: 1px solid var(--hair); }
td { padding: 10px 12px; border-bottom: 1px solid #EDF1F4; vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td.num { font: 12.5px var(--mono); font-variant-numeric: tabular-nums; }

/* action icons: edit at the end of a course's row; map, play, json beside its title */
td.actions { white-space: nowrap; padding-top: 5px; padding-bottom: 5px; }
p.back { margin: 0 0 14px; }
.head { display: flex; align-items: center; gap: 12px; margin: 0 0 4px; }
.head h2 { margin: 0; }
.head .actions { display: flex; gap: 2px; margin-left: auto; }
.action {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  color: var(--muted);
  border: 1px solid transparent; border-radius: 8px;
  text-decoration: none;
}
.action:hover, .action:focus-visible {
  color: var(--select);
  background: var(--paper);
  border-color: var(--hair);
}
.action svg { width: 18px; height: 18px; display: block; }

.key, .nid {
  display: inline-block;
  font: 11.5px var(--mono);
  padding: 2px 6px; border-radius: 5px;
  background: #F1F4F7; border: 1px solid #E1E8ED;
}
button.key { color: inherit; text-align: left; word-break: break-all; }
.copy { cursor: copy; }
.copy:hover, .copy:focus-visible { border-color: var(--select); }
.copy.copied::after { content: "  copied"; color: var(--ok); }
.tag {
  display: inline-block; font: 10.5px var(--mono);
  padding: 2px 6px; border-radius: 5px;
  background: #EEF2F5; color: #42576a;
}
.tag.published { background: #E6F2EB; color: var(--ok); }
.tag.draft     { background: #EEF2F5; color: #42576a; }
.tag.archived  { background: #F3EFEA; color: var(--warn); }

.chip {
  display: inline-block; font: 11px var(--mono);
  padding: 2px 7px; border-radius: 5px;
  color: #fff;
}

.meter { height: 6px; background: #E4EAEF; border-radius: 3px; overflow: hidden; min-width: 90px; }
.meter > i { display: block; height: 100%; background: var(--select); }

.prose { font: 15px/1.62 var(--serif); color: #1B2932; white-space: pre-wrap; }
.code  { font: 12px/1.55 var(--mono); background: #F4F7F9; border: 1px solid #E4EAEF;
         border-radius: 8px; padding: 10px 12px; color: #25323D;
         white-space: pre-wrap; overflow-x: auto; }

.notice { border: 1px solid #E7D6C3; border-left: 3px solid var(--warn);
          background: #FDF8F3; border-radius: 9px; padding: 11px 13px;
          font-size: 12.5px; margin-bottom: 14px; }
.notice.bad { border-color: #E7C3C7; border-left-color: var(--bad); background: #FDF4F5; }
.notice.ok  { border-color: #C9E2D5; border-left-color: var(--ok);  background: #F2F9F5; }
.notice ul { margin: 6px 0 0; padding-left: 18px; }
.notice li { margin-bottom: 3px; }

label { display: block; margin: 12px 0 5px; font-size: 12.5px; font-weight: 600; }
input[type=text], input[type=password], input[type=url], input[type=file],
input[type=number], select, textarea {
  width: 100%; padding: 8px 10px;
  font: 13px var(--sans); color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--hair); border-radius: 7px;
}
textarea { font-family: var(--mono); font-size: 12px; min-height: 160px; }
.row { display: flex; gap: 12px; flex-wrap: wrap; }
.row > * { flex: 1 1 220px; }

td.shelf { padding-top: 18px; font-size: 12.5px; font-weight: 600;
           letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }

.empty { color: var(--muted); font-style: italic; padding: 18px 0; }
.muted { color: var(--muted); }

:focus-visible { outline: 2px solid var(--select); outline-offset: 2px; }

.login { max-width: 320px; margin: 12vh auto; }