/* ==========================================================================
   KILN · course manager
   Product register: design serves the task. Same tokens as the brand site,
   but this is a tool used in daylight, so it is light, dense and quiet.
   Loaded after site.css.
   ========================================================================== */

body.admin {
  background: var(--wash);
  min-height: 100vh;
}

/* ---------- login ---------- */
.login-screen {
  min-height: 100vh;
  display: grid; place-items: center;
  padding: var(--sp-5);
  background: var(--char);
}
.login-card {
  width: min(100%, 400px);
  background: var(--on-dark);
  border-radius: var(--radius);
  padding: clamp(1.75rem, 4vw, 2.5rem);
}
.login-card .mark { color: var(--ink); margin-bottom: var(--sp-6); }
.login-card .mark__glyph { color: var(--ember); }
.login-card h1 { font-size: 1.5rem; margin-bottom: var(--sp-2); }
.login-card > p { font-size: var(--fs-sm); color: var(--ink-muted); margin-bottom: var(--sp-6); }
.login-hint {
  margin-top: var(--sp-5); padding: var(--sp-3) var(--sp-4);
  background: var(--wash); border: 1px dashed var(--rule); border-radius: var(--radius);
  font-size: 0.8125rem; color: var(--ink-muted);
}
.login-hint code { font-family: ui-monospace, monospace; color: var(--ink); font-weight: 600; }

/* ---------- shell ---------- */
.app { display: none; min-height: 100vh; grid-template-columns: 232px 1fr; }
body.admin[data-auth="true"] .app { display: grid; }
body.admin[data-auth="true"] .login-screen { display: none; }

@media (max-width: 860px) { .app { grid-template-columns: 1fr; } }

.side {
  background: var(--char); color: var(--on-dark);
  padding: var(--sp-5) var(--sp-4);
  display: flex; flex-direction: column; gap: var(--sp-6);
  position: sticky; top: 0; height: 100vh;
}
@media (max-width: 860px) { .side { position: static; height: auto; gap: var(--sp-4); } }

.side .mark { color: var(--on-dark); }
.side .mark__glyph { color: var(--flame); }
.side__role { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--sand); margin-top: var(--sp-2); }

.side__nav { display: flex; flex-direction: column; gap: 2px; }
@media (max-width: 860px) { .side__nav { flex-direction: row; flex-wrap: wrap; } }

.side__link {
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3);
  min-height: 44px; padding: 0 var(--sp-4);
  border: none; background: transparent; color: var(--on-dark-muted);
  border-radius: var(--radius); font-size: var(--fs-sm); text-align: left;
  cursor: pointer; width: 100%;
  transition: background-color var(--t-state) var(--ease-soft), color var(--t-state) var(--ease-soft);
}
@media (max-width: 860px) { .side__link { width: auto; } }
.side__link:hover { background: rgba(255,255,255,0.07); color: var(--on-dark); }
.side__link[aria-current="true"] { background: var(--ash); color: var(--on-dark); font-weight: 500; }
.side__count {
  font-size: 0.75rem; font-variant-numeric: tabular-nums;
  background: rgba(255,255,255,0.12); color: var(--on-dark);
  border-radius: 2px; padding: 1px 6px;
}

.side__foot { margin-top: auto; display: grid; gap: var(--sp-2); font-size: 0.8125rem; }
@media (max-width: 860px) { .side__foot { margin-top: 0; } }
.side__foot a, .side__foot button {
  color: var(--sand); text-decoration: none; background: none; border: none;
  padding: var(--sp-2) 0; text-align: left; cursor: pointer; font-size: 0.8125rem;
}
.side__foot a:hover, .side__foot button:hover { color: var(--flame); }

/* ---------- main ---------- */
.main { padding: clamp(1.25rem, 3vw, 2.5rem); min-width: 0; }
.view { display: none; }
.view[data-active="true"] { display: block; }

.head {
  display: flex; flex-wrap: wrap; gap: var(--sp-4);
  align-items: end; justify-content: space-between;
  margin-bottom: var(--sp-6);
}
.head h1 { font-size: clamp(1.6rem, 3vw, 2.1rem); }
.head p { font-size: var(--fs-sm); color: var(--ink-muted); margin-top: var(--sp-2); }

.panel {
  background: var(--on-dark);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
}
.panel + .panel { margin-top: var(--sp-5); }
.panel__head {
  display: flex; flex-wrap: wrap; gap: var(--sp-3);
  align-items: center; justify-content: space-between;
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--rule);
}
.panel__head h2 { font-family: var(--font-sans); font-size: 1rem; font-weight: 600; letter-spacing: 0; }
.panel__body { padding: var(--sp-5); }

/* ---------- table ----------
   position:relative matters: it makes .tablewrap the containing block for
   absolutely-positioned descendants (the .visually-hidden action-column
   label), so they scroll with the table instead of escaping and widening
   the whole document. */
.tablewrap { overflow-x: auto; position: relative; }
table.t { width: 100%; border-collapse: collapse; font-size: var(--fs-sm); min-width: 600px; }

/* secondary columns drop away on small screens so the table fits a phone */
@media (max-width: 640px) {
  .col-opt { display: none; }
  table.t { min-width: 460px; }
}
table.t th {
  text-align: left; font-weight: 500; font-size: var(--fs-label);
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint);
  padding: var(--sp-3) var(--sp-4); border-bottom: 1px solid var(--rule); white-space: nowrap;
}
table.t td { padding: var(--sp-4); border-bottom: 1px solid var(--rule); vertical-align: middle; }
table.t tr:last-child td { border-bottom: none; }
table.t tbody tr { transition: background-color var(--t-state) var(--ease-soft); }
table.t tbody tr:hover { background: var(--bone); }
.t__title { font-weight: 500; }
.t__sub { font-size: 0.8125rem; color: var(--ink-faint); margin-top: 2px; }
.t__num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.t__actions { display: flex; gap: var(--sp-2); justify-content: flex-end; }

.iconbtn {
  min-height: 34px; padding: 0 0.7em;
  background: transparent; border: 1px solid var(--rule); border-radius: var(--radius);
  font-size: 0.8125rem; cursor: pointer; white-space: nowrap;
  transition: all var(--t-state) var(--ease-soft);
}
.iconbtn:hover { border-color: var(--ink); }
.iconbtn--danger:hover { border-color: #B3261E; color: #9F2119; }

/* ---------- editor ---------- */
.editor { display: grid; grid-template-columns: 1fr 320px; gap: var(--sp-5); align-items: start; }
@media (max-width: 1080px) { .editor { grid-template-columns: 1fr; } }

.fieldset { display: grid; gap: var(--sp-5); }
.grid2 { display: grid; gap: var(--sp-4); grid-template-columns: 1fr 1fr; }
.grid3 { display: grid; gap: var(--sp-4); grid-template-columns: repeat(3, 1fr); }
@media (max-width: 620px) { .grid2, .grid3 { grid-template-columns: 1fr; } }

.seg { display: inline-flex; border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; }
.seg button {
  min-height: 42px; padding: 0 1.1em; border: none; background: var(--on-dark);
  font-size: var(--fs-sm); cursor: pointer;
  transition: background-color var(--t-state) var(--ease-soft), color var(--t-state) var(--ease-soft);
}
.seg button + button { border-left: 1px solid var(--rule); }
.seg button:hover { background: var(--wash); }
.seg button[aria-pressed="true"] { background: var(--graphite); color: var(--on-dark); font-weight: 500; }

/* module repeater */
.mods { display: grid; gap: var(--sp-3); }
.mod {
  display: grid; grid-template-columns: auto 1fr auto; gap: var(--sp-3);
  align-items: start;
  padding: var(--sp-4);
  background: var(--bone);
  border: 1px solid var(--rule); border-radius: var(--radius);
}
.mod__n {
  font-family: var(--font-display); font-weight: 700; font-size: 0.9375rem;
  color: var(--ink-faint); font-variant-numeric: tabular-nums; padding-top: 12px; min-width: 2.4ch;
}
.mod__fields { display: grid; gap: var(--sp-3); min-width: 0; }
.mod__row { display: grid; grid-template-columns: 1fr 110px; gap: var(--sp-3); }
@media (max-width: 620px) { .mod__row { grid-template-columns: 1fr; } }
.mod__side { display: grid; gap: var(--sp-2); justify-items: end; }

.switch {
  display: inline-flex; align-items: center; gap: 0.5em;
  font-size: 0.8125rem; cursor: pointer; white-space: nowrap;
  padding: var(--sp-2) 0;
}
.switch input { width: 18px; height: 18px; accent-color: #C24A1F; cursor: pointer; margin: 0; }

.editor__aside { position: sticky; top: var(--sp-5); display: grid; gap: var(--sp-4); }
@media (max-width: 1080px) { .editor__aside { position: static; } }

.preview-card {
  border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; background: var(--on-dark);
}
.preview-card__cover { aspect-ratio: 16/9; background: var(--graphite); position: relative; overflow: hidden; }
.preview-card__cover img { width: 100%; height: 100%; object-fit: cover; }
.preview-card__veil { position: absolute; inset: 0; background: linear-gradient(0deg, rgba(18,14,12,.55), transparent 70%); }
.preview-card__body { padding: var(--sp-4); }
.preview-card__body h3 { font-family: var(--font-sans); font-size: 1rem; font-weight: 600; letter-spacing: 0; margin-bottom: var(--sp-2); }
.preview-card__body p { font-size: 0.8125rem; color: var(--ink-muted); }

.savebar {
  position: sticky; bottom: 0;
  display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center;
  background: var(--on-dark);
  border: 1px solid var(--rule); border-radius: var(--radius);
  padding: var(--sp-4) var(--sp-5);
  margin-top: var(--sp-5);
  box-shadow: 0 -8px 24px -18px rgba(22,18,15,0.6);
}
.savebar__note { font-size: 0.8125rem; color: var(--ink-faint); margin-right: auto; }

/* ---------- stats ---------- */
.stats { display: grid; gap: var(--sp-4); grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); margin-bottom: var(--sp-5); }
.stat { background: var(--on-dark); border: 1px solid var(--rule); border-radius: var(--radius); padding: var(--sp-4) var(--sp-5); }
.stat__v { font-family: var(--font-display); font-size: 1.75rem; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
.stat__k { font-size: 0.8125rem; color: var(--ink-faint); margin-top: 2px; }

/* ---------- misc ---------- */
.danger-zone { border-color: #E8C4B4; }
.danger-zone .panel__head { border-color: #EFD3C6; }

.hint { font-size: 0.8125rem; color: var(--ink-faint); }
.stack { display: grid; gap: var(--sp-4); }
.row-end { display: flex; gap: var(--sp-3); flex-wrap: wrap; justify-content: flex-end; }