/* ==========================================================================
   SAME DREAM — staff portal (sign-in + upload channels)
   Loaded only by staff.html and portal.html.
   ========================================================================== */

/* ------------------------------------------------------------ sign-in --- */
.staff-shell {
  min-height: 72vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-block: clamp(3rem, 9vw, 7rem);
}

.staff-card {
  width: min(30rem, 100%);
  background: var(--paper-frame);
  border: 1px solid var(--ink-line);
  border-radius: 3px;
  padding: clamp(1.8rem, 4vw, 2.8rem);
  box-shadow: 0 24px 60px -34px rgba(27, 24, 21, 0.35);
  position: relative;
}
.staff-card::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--paint-vermilion), var(--paint-yellow) 55%, var(--paint-cobalt));
  opacity: 0.85;
}

.staff-card__mark {
  display: block;
  width: 2.6rem;
  height: 2.6rem;
  color: var(--ink);
  margin-bottom: 1.4rem;
}
.staff-card h1 { margin: 0.5rem 0 0.9rem; }
.staff-card .lede { font-size: 0.98rem; }

.staff-form { margin-top: 1.9rem; display: grid; gap: 1.15rem; }
.staff-field { display: grid; gap: 0.45rem; }
.staff-field label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.staff-field input {
  font: inherit;
  font-size: 1rem;
  padding: 0.8rem 0.9rem;
  background: var(--paper);
  border: 1px solid var(--ink-line);
  border-radius: 2px;
  color: var(--ink);
  transition: border-color var(--dur-1), background var(--dur-1);
}
.staff-field input:focus {
  outline: none;
  border-color: var(--paint-vermilion);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(212, 83, 43, 0.13);
}
.staff-field input[name='pin'] {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.55em;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.staff-error {
  margin: 0;
  font-size: 0.88rem;
  color: var(--paint-vermilion);
  background: rgba(212, 83, 43, 0.07);
  border-left: 2px solid var(--paint-vermilion);
  padding: 0.6rem 0.8rem;
}
.staff-error[hidden] { display: none; }

.staff-form .btn { width: 100%; justify-content: center; }
.staff-form .btn[disabled] { opacity: 0.6; cursor: progress; }

.staff-hint {
  margin-top: 1.4rem;
  font-size: 0.82rem;
  color: var(--ink-mute);
  line-height: 1.6;
}
.staff-back { margin-top: 1.2rem; font-size: 0.85rem; }
.staff-back a { color: var(--ink-mute); }

/* --------------------------------------------------------------- portal --- */
.portal {
  padding-block: clamp(1.6rem, 4vw, 3rem) clamp(3rem, 7vw, 6rem);
}

.portal-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--ink-line);
}
.portal-bar__id { font-size: 0.9rem; color: var(--ink-mute); }
.portal-bar__id strong { color: var(--ink); font-weight: 700; }
.portal-bar__actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.portal-btn {
  font: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  background: transparent;
  border: 1px solid var(--ink-line);
  border-radius: 2px;
  color: var(--ink-soft);
  cursor: pointer;
  transition: border-color var(--dur-1), color var(--dur-1), background var(--dur-1);
}
.portal-btn:hover { border-color: var(--ink-mute); color: var(--ink); background: var(--paper-warm); }
.portal-btn--accent { border-color: var(--paint-vermilion); color: var(--paint-vermilion); }
.portal-btn--accent:hover { background: var(--paint-vermilion); color: #fff; border-color: var(--paint-vermilion); }
.portal-btn--danger { border-color: rgba(212, 83, 43, 0.5); color: var(--paint-vermilion); }
.portal-btn--danger:hover { background: var(--paint-vermilion); color: #fff; }
.portal-btn[disabled] { opacity: 0.5; cursor: not-allowed; }

.portal-head { margin-top: clamp(1.8rem, 4vw, 2.8rem); }
.portal-head h1 { margin: 0.4rem 0 0.7rem; }

/* overall progress */
.portal-meter {
  margin-top: 1.6rem;
  display: flex;
  align-items: center;
  gap: 1.1rem;
  flex-wrap: wrap;
}
.portal-meter__track {
  flex: 1 1 14rem;
  height: 4px;
  background: var(--ink-line);
  border-radius: 999px;
  overflow: hidden;
}
.portal-meter__fill {
  height: 100%;
  width: 0;
  background: var(--paint-vermilion);
  transition: width var(--dur-2) var(--ease-out);
}
.portal-meter__label {
  font-size: 0.82rem;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
}

/* breadcrumb / view switching */
.portal-crumbs {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
  font-size: 0.85rem;
  color: var(--ink-mute);
}
.portal-crumbs button {
  font: inherit;
  font-size: 0.85rem;
  background: none;
  border: none;
  padding: 0;
  color: var(--paint-vermilion);
  cursor: pointer;
  border-bottom: 1px solid currentColor;
}
.portal-crumbs .sep { color: var(--ink-faint); }

/* unit grid */
.unit-grid {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1rem;
}
.unit-card {
  display: grid;
  align-content: start;
  gap: 0.3rem;
  text-align: left;
  font: inherit;
  background: var(--paper-frame);
  border: 1px solid var(--ink-line);
  border-top: 3px solid var(--unit, var(--ink-line));
  border-radius: 2px;
  padding: 1.15rem 1.25rem 1.25rem;
  cursor: pointer;
  transition: transform var(--dur-1) var(--ease-out), box-shadow var(--dur-1), border-color var(--dur-1);
}
.unit-card:hover { transform: translateY(-3px); box-shadow: 0 18px 34px -26px rgba(27, 24, 21, 0.6); }
.unit-card__n {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
}
.unit-card__t { font-weight: 700; font-size: 1.02rem; margin-top: 0.35rem; }
.unit-card__s { font-size: 0.78rem; color: var(--ink-mute); margin-top: 0.2rem; }
.unit-card__bar {
  margin-top: 0.9rem;
  height: 3px;
  background: var(--ink-line);
  border-radius: 999px;
  overflow: hidden;
}
.unit-card__bar span { display: block; height: 100%; background: var(--unit, var(--ink)); width: 0; }

/* lesson list */
.lesson-list { margin-top: 1.6rem; border-top: 1px solid var(--ink-line); }
.lesson-item {
  width: 100%;
  text-align: left;
  font: inherit;
  background: none;
  border: none;
  border-bottom: 1px solid var(--ink-line);
  padding: 1rem 0.4rem;
  display: grid;
  grid-template-columns: 2.6rem 1fr auto;
  gap: 1rem;
  align-items: center;
  cursor: pointer;
  transition: background var(--dur-1), padding-inline var(--dur-1) var(--ease-out);
}
.lesson-item:hover { background: var(--paper-warm); padding-inline: 0.9rem 0.4rem; }
.lesson-item__n {
  font-family: var(--font-display);
  font-variant-numeric: tabular-nums;
  color: var(--ink-faint);
  font-weight: 600;
}
.lesson-item__t { display: block; font-weight: 700; font-size: 0.98rem; }
.lesson-item__sub { display: block; font-size: 0.82rem; color: var(--ink-mute); margin-top: 0.1rem; max-width: 62ch; }
.lesson-item__count {
  font-size: 0.78rem;
  color: var(--ink-mute);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.lesson-item__count.is-done { color: var(--paint-green); font-weight: 700; }

/* slot cards */
.slot-list { margin-top: 1.6rem; display: grid; gap: 0.9rem; }
.slot {
  background: var(--paper-frame);
  border: 1px solid var(--ink-line);
  border-radius: 2px;
  padding: 1.1rem 1.25rem 1.2rem;
  display: grid;
  gap: 0.8rem;
}
.slot.is-filled { border-left: 3px solid var(--paint-green); }
.slot__top { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; }
.slot__n {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}
.slot__t { font-weight: 700; font-size: 1rem; }
.slot__state {
  margin-left: auto;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
}
.slot__state--empty { background: var(--paper-deep); color: var(--ink-mute); }
.slot__state--filled { background: rgba(110, 156, 99, 0.16); color: #4c7144; }

.slot__file {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem 1rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px dashed var(--ink-line);
  border-radius: 2px;
  padding: 0.7rem 0.85rem;
}
.slot__file a { color: var(--paint-cobalt); font-weight: 600; }
.slot__meta { font-size: 0.78rem; color: var(--ink-mute); }
.slot__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.slot__hint { font-size: 0.76rem; color: var(--ink-faint); }
.slot__note { font-size: 0.78rem; color: var(--ink-mute); }

.slot__flash {
  font-size: 0.82rem;
  padding: 0.45rem 0.7rem;
  border-radius: 2px;
}
.slot__flash--ok { background: rgba(110, 156, 99, 0.15); color: #4c7144; }
.slot__flash--err { background: rgba(212, 83, 43, 0.1); color: var(--paint-vermilion); }

input[type='file'].visually-hidden-input {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

/* activity feed */
.portal-activity { margin-top: clamp(2.5rem, 6vw, 4rem); }
.portal-activity h2 { margin-bottom: 0.9rem; }
.activity-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ink-line); }
.activity-list li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.4rem 1rem;
  align-items: baseline;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--ink-line);
  font-size: 0.85rem;
}
.activity-list .who { font-weight: 700; }
.activity-list .what { color: var(--ink-soft); }
.activity-list .when { color: var(--ink-faint); font-size: 0.78rem; white-space: nowrap; }

.portal-empty { color: var(--ink-mute); font-size: 0.9rem; padding: 1.2rem 0; }

/* --------------------------------------------------- staff link in chrome --- */
.staff-entry {
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid color-mix(in srgb, var(--paper) 20%, transparent);
}
.staff-entry__note {
  margin-top: 0.8rem;
  font-size: 0.78rem !important;
  color: color-mix(in srgb, var(--paper) 55%, transparent) !important;
}

@media (max-width: 640px) {
  .lesson-item { grid-template-columns: 2rem 1fr; }
  .lesson-item__count { grid-column: 2; }
  .slot__state { margin-left: 0; }
  .activity-list li { grid-template-columns: 1fr; }
  .activity-list .when { justify-self: start; }
}