/* ═══════════════════════════════════════════════════════════
   packs.css — Redeem modal + admin dashboard + locked-card
   visual treatments. Pulls in the existing design tokens
   from style.css (--dark, --gray-*, --blue, etc.).
   ═══════════════════════════════════════════════════════════ */

/* ──────────────────────────────────────────────────────────
   1. REDEEM MODAL  (.rd-*)
   Opens from the hub, settings, or teacher class detail.
   ────────────────────────────────────────────────────────── */
.rd-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  padding: 16px;
  animation: rd-fade-in .22s ease-out;
}
@keyframes rd-fade-in { from { opacity: 0; } to { opacity: 1; } }

.rd-modal {
  position: relative;
  background: #fff;
  border: 3px solid var(--dark, #1D1D1F);
  border-radius: 14px;
  box-shadow: 6px 6px 0 0 var(--dark, #1D1D1F);
  padding: 28px 24px 22px;
  width: min(440px, 100%);
  max-width: 100%;
  animation: rd-pop .28s cubic-bezier(.34, 1.56, .64, 1);
}
@keyframes rd-pop {
  0%   { transform: translateY(20px) scale(.96); opacity: 0; }
  100% { transform: translateY(0)    scale(1);   opacity: 1; }
}
.rd-close {
  position: absolute;
  top: 8px; right: 12px;
  background: none;
  border: none;
  font-size: 1.6rem;
  color: var(--gray-2, #555);
  cursor: pointer;
  line-height: 1;
}
.rd-close:hover { color: var(--dark, #1D1D1F); }

.rd-title {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--dark, #1D1D1F);
  margin: 0 0 10px;
  letter-spacing: -.02em;
}
.rd-hint {
  font-size: .85rem;
  color: var(--gray-2, #555);
  line-height: 1.45;
  margin: 0 0 18px;
}

.rd-input {
  width: 100%;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: .15em;
  text-align: center;
  text-transform: uppercase;
  padding: 14px 12px;
  border: 3px solid var(--dark, #1D1D1F);
  border-radius: 8px;
  background: #fafafa;
  color: var(--dark, #1D1D1F);
  outline: none;
  transition: background .15s ease, border-color .15s ease;
}
.rd-input:focus {
  background: #fff;
  border-color: var(--blue, #049CD8);
  box-shadow: 0 0 0 3px rgba(4, 156, 216, .15);
}

.rd-status {
  margin-top: 12px;
  min-height: 22px;
  font-size: .85rem;
  text-align: center;
}
.rd-status-ok  { color: var(--green, #43B047); font-weight: 700; }
.rd-status-err { color: var(--red, #E52521);   font-weight: 700; }

.rd-actions {
  margin-top: 16px;
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ──────────────────────────────────────────────────────────
   2. LOCKED SUBJECT CARDS / UNIT CARDS / GRAMMAR WORLD CARDS
   Greyed-out variant + small "Code needed" badge.
   ────────────────────────────────────────────────────────── */
.subj-locked {
  opacity: .58;
  position: relative;
  filter: saturate(.5);
}
.subj-locked:hover  { opacity: .75; }
.subj-locked:active { transform: translate(2px, 2px); }

.subj-lock-badge {
  position: absolute;
  top: 8px; right: 10px;
  font-size: .55rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--dark, #1D1D1F);
  color: #fff;
  padding: 3px 8px;
  border-radius: 12px;
}

/* Vocab unit card pack-locked variant */
.unit-card-pack-locked {
  opacity: .55;
  position: relative;
  filter: saturate(.4);
}
.unit-card-pack-locked:hover  { opacity: .75; }
.unit-card-pack-badge {
  position: absolute;
  top: 6px; right: 8px;
  z-index: 2;
  font-size: .5rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--dark, #1D1D1F);
  color: #fff;
  padding: 2px 7px;
  border-radius: 10px;
}

/* Grammar world card pack-locked variant */
.gw-card-pack-locked {
  opacity: .55;
  position: relative;
  filter: saturate(.4);
}
.gw-card-pack-locked:hover  { opacity: .75; }
.gw-card-pack-badge {
  position: absolute;
  top: 6px; right: 8px;
  z-index: 2;
  font-size: .5rem;
  font-weight: 900;
  letter-spacing: .06em;
  text-transform: uppercase;
  background: var(--dark, #1D1D1F);
  color: #fff;
  padding: 2px 7px;
  border-radius: 10px;
}

/* ──────────────────────────────────────────────────────────
   3. HUB-LEVEL "REDEEM CODE" ENTRY ROW
   Sits above the subject cards as a small affordance.
   ────────────────────────────────────────────────────────── */
.hub-redeem-entry {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  margin-bottom: 4px;
  background: #FFFCED;
  border: 2px dashed var(--dark, #1D1D1F);
  border-radius: 10px;
  cursor: pointer;
  font-weight: 700;
  font-size: .85rem;
  color: var(--dark, #1D1D1F);
  transition: background .15s ease;
}
.hub-redeem-entry:hover  { background: #FFF7C5; }
.hub-redeem-entry:active { transform: translate(1px, 1px); }
.hub-redeem-icon { font-size: 1.1rem; }

/* ──────────────────────────────────────────────────────────
   4. ADMIN DASHBOARD  (.ad-*)
   Three-tab single-screen admin UI.
   ────────────────────────────────────────────────────────── */
.ad-header {
  padding: 18px 4px 8px;
}
.ad-title {
  font-size: 1.5rem;
  font-weight: 900;
  margin: 0 0 4px;
  letter-spacing: -.02em;
}
.ad-subtitle {
  font-size: .85rem;
  color: var(--gray-2, #555);
  margin: 0;
}

.ad-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--gray-4, #ccc);
  margin: 14px 0 18px;
}
.ad-tab {
  padding: 10px 18px;
  background: none;
  border: none;
  font-size: .9rem;
  font-weight: 800;
  color: var(--gray-2, #555);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: color .15s ease, border-color .15s ease;
}
.ad-tab:hover { color: var(--dark, #1D1D1F); }
.ad-tab-active {
  color: var(--dark, #1D1D1F);
  border-bottom-color: var(--blue, #049CD8);
}

.ad-card {
  background: #fff;
  border: 2px solid var(--dark, #1D1D1F);
  border-radius: 10px;
  box-shadow: 3px 3px 0 0 var(--dark, #1D1D1F);
  padding: 18px;
  margin-bottom: 18px;
}
.ad-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  margin: 0 0 8px;
  letter-spacing: -.01em;
}
.ad-card-hint {
  font-size: .78rem;
  color: var(--gray-2, #555);
  margin: 0 0 12px;
  line-height: 1.4;
}
.ad-loading, .ad-empty {
  font-size: .85rem;
  color: var(--gray-2, #555);
  padding: 12px;
  text-align: center;
}

/* ── Form controls ── */
.ad-form-label {
  display: block;
  font-size: .8rem;
  font-weight: 800;
  color: var(--dark, #1D1D1F);
  margin: 14px 0 6px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.ad-form-hint {
  font-size: .72rem;
  color: var(--gray-2, #555);
  margin-top: 4px;
  line-height: 1.4;
}
.ad-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 8px;
}
@media (max-width: 600px) {
  .ad-form-row { grid-template-columns: 1fr; }
}
.ad-input {
  width: 100%;
  padding: 8px 10px;
  border: 2px solid var(--dark, #1D1D1F);
  border-radius: 6px;
  font-size: .9rem;
  background: #fff;
  outline: none;
}
.ad-input:focus { border-color: var(--blue, #049CD8); box-shadow: 0 0 0 2px rgba(4,156,216,.15); }

.ad-radio-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: .85rem;
}
.ad-radio-row label {
  cursor: pointer;
  padding: 4px 0;
}

/* Pack checkbox grid */
.ad-pack-checkboxes {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 240px;
  overflow-y: auto;
  padding: 8px;
  background: #fafafa;
  border: 1px solid var(--gray-4, #ccc);
  border-radius: 6px;
}
.ad-pack-checkbox {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 4px;
  cursor: pointer;
  font-size: .85rem;
  transition: background .12s ease;
}
.ad-pack-checkbox:hover { background: #f0f0f0; }
.ad-pack-checkbox-skill {
  display: inline-block;
  font-size: .65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
  background: var(--gray-5, #eee);
  color: var(--gray-2, #555);
  padding: 2px 7px;
  border-radius: 8px;
  min-width: 64px;
  text-align: center;
}
.ad-pack-checkbox-name { flex: 1; font-weight: 600; }
.ad-pack-checkbox-free {
  font-size: .6rem;
  font-weight: 900;
  background: var(--green, #43B047);
  color: #fff;
  padding: 2px 6px;
  border-radius: 8px;
  letter-spacing: .04em;
}

.ad-generate-btn { margin-top: 16px; }
.ad-generate-status {
  margin-top: 10px;
  font-size: .85rem;
  min-height: 20px;
}
.ad-status-ok  { color: var(--green, #43B047); font-weight: 700; }
.ad-status-err { color: var(--red, #E52521);   font-weight: 700; }
.ad-status-copy {
  text-decoration: underline;
  cursor: pointer;
  color: var(--blue, #049CD8);
  font-weight: 700;
}

/* ── Codes list rows ── */
.ad-codes-list { display: flex; flex-direction: column; gap: 8px; }
.ad-code-row {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 12px;
  border: 2px solid var(--dark, #1D1D1F);
  border-radius: 8px;
  background: #fff;
}
.ad-code-row-dead { opacity: .5; background: #f5f5f5; }
.ad-code-left  { flex: 1; min-width: 0; }
.ad-code-right { flex-shrink: 0; }
.ad-code-string {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 1.1rem;
  font-weight: 900;
  letter-spacing: .12em;
  background: #FFFCED;
  border: 2px dashed var(--dark, #1D1D1F);
  padding: 4px 12px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--dark, #1D1D1F);
}
.ad-code-string:hover { background: #FFF7C5; }
.ad-code-meta {
  font-size: .7rem;
  color: var(--gray-2, #555);
  margin-top: 6px;
}
.ad-code-packs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-top: 6px;
}
.ad-code-pack-pill {
  font-size: .65rem;
  font-weight: 700;
  background: var(--gray-5, #eee);
  color: var(--gray-1, #333);
  padding: 2px 7px;
  border-radius: 8px;
}
.ad-code-dead-badge {
  font-size: .6rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--gray-2, #555);
  background: var(--gray-5, #eee);
  padding: 4px 8px;
  border-radius: 6px;
}

/* ── Packs tab rows ── */
.ad-pack-list { display: flex; flex-direction: column; gap: 8px; }
.ad-pack-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 12px;
  border: 2px solid var(--gray-4, #ccc);
  border-radius: 8px;
  background: #fff;
}
.ad-pack-row-info { flex: 1; min-width: 0; }
.ad-pack-row-name { font-weight: 800; font-size: .95rem; }
.ad-pack-row-meta { font-size: .7rem; color: var(--gray-2, #555); margin-top: 3px; }
.ad-pack-row-meta code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  background: var(--gray-5, #eee);
  padding: 1px 4px;
  border-radius: 3px;
}
.ad-pack-row-desc { font-size: .75rem; color: var(--gray-2, #555); margin-top: 4px; }
.ad-pack-row-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

/* ── Users tab ── */
.ad-user-results {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 14px;
}
.ad-user-row {
  border: 2px solid var(--dark, #1D1D1F);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}
.ad-user-head { margin-bottom: 10px; }
.ad-user-name { font-size: 1rem; font-weight: 800; }
.ad-user-email { font-size: .75rem; color: var(--gray-2, #555); margin-top: 2px; }
.ad-user-class { font-size: .75rem; color: var(--gray-1, #333); margin-top: 4px; }
.ad-user-hearts { font-size: .75rem; color: var(--red, #E52521); margin-top: 4px; font-weight: 700; }
.ad-user-packs {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: #fafafa;
  border-radius: 6px;
  padding: 8px;
}
.ad-user-pack-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 4px 6px;
  font-size: .8rem;
}
.ad-user-pack-name { flex: 1; font-weight: 600; }
.ad-user-pack-source {
  font-size: .65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 2px 7px;
  border-radius: 8px;
  background: var(--gray-5, #eee);
  color: var(--gray-2, #555);
}
.ad-user-pack-personal .ad-user-pack-source { background: var(--blue, #049CD8); color: #fff; }
.ad-user-pack-class    .ad-user-pack-source { background: var(--yellow, #F8B800); color: var(--dark, #1D1D1F); }
.ad-user-pack-free     .ad-user-pack-source { background: var(--green, #43B047); color: #fff; }

/* ──────────────────────────────────────────────────────────
   5. TEACHER CLASS-DETAIL "UNLOCKED CONTENT" BLOCK
   ────────────────────────────────────────────────────────── */
.teacher-pack-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.teacher-pack-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  background: #fafafa;
  border: 1px solid var(--gray-4, #ccc);
  border-radius: 6px;
}
.teacher-pack-name {
  flex: 1;
  font-weight: 700;
  font-size: .85rem;
  color: var(--dark, #1D1D1F);
}
.teacher-pack-skill {
  font-size: .65rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .05em;
  background: var(--gray-5, #eee);
  color: var(--gray-2, #555);
  padding: 2px 8px;
  border-radius: 8px;
}

/* btn-small reuse if not already in style.css */
.btn-small {
  font-size: .72rem;
  padding: 6px 10px;
}
.btn-danger {
  background: var(--red, #E52521);
  color: #fff;
  border: 2px solid var(--dark, #1D1D1F);
  font-weight: 800;
  cursor: pointer;
  border-radius: 6px;
}
.btn-danger:hover { filter: brightness(.95); }