/* ============================================================
   admin-subscription-promo.css
   Self-contained styling for /admin/subscriptions/.
   Mirrors the `rf-*` palette used by /admin/refunds/ but with
   a `sub-*` prefix to avoid any class clash, and a green-blue
   accent (vs refunds' gold) to visually signal a different domain.
   ============================================================ */

:root {
  --sub-bg-deep:      #0a0a0f;
  --sub-bg-1:         #14141c;
  --sub-bg-2:         #1c1c28;
  --sub-bg-3:         #242432;
  --sub-border:       rgba(255, 255, 255, 0.08);
  --sub-border-soft:  rgba(255, 255, 255, 0.05);
  --sub-text:         #f0f0f5;
  --sub-text-muted:   #9a9aab;
  --sub-text-dim:     #6a6a78;

  /* Accent — teal/cyan to differentiate from courses (gold) and refunds (gold) */
  --sub-accent:       #06b6d4;
  --sub-accent-soft:  #0891b2;
  --sub-accent-glow:  rgba(6, 182, 212, 0.25);

  --sub-success:      #10b981;
  --sub-warn:         #fbbf24;
  --sub-danger:       #ef4444;
  --sub-info:         #60a5fa;

  --sub-radius:       10px;
  --sub-radius-sm:    6px;
}

body.admin-page {
  background: var(--sub-bg-deep);
  color: var(--sub-text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  min-height: 100vh;
}

/* ────────── Layout ────────── */
.sub-main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 28px 24px 80px;
}

.sub-page-header { margin-bottom: 24px; }
.sub-back {
  display: inline-block;
  color: var(--sub-text-muted);
  text-decoration: none;
  font-size: 13px;
  margin-bottom: 12px;
  transition: color 0.15s;
}
.sub-back:hover { color: var(--sub-accent); }

.sub-page-header h1 {
  font-family: 'Playfair Display', serif;
  font-size: 32px;
  font-weight: 700;
  color: var(--sub-text);
  margin: 0 0 8px;
}
.sub-subtitle {
  color: var(--sub-text-muted);
  font-size: 14px;
  line-height: 1.6;
  max-width: 800px;
  margin: 0;
}
.sub-subtitle code {
  background: var(--sub-bg-2);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--sub-accent);
}

/* ────────── Toolbar ────────── */
.sub-toolbar {
  background: var(--sub-bg-1);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius);
  padding: 14px 18px;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.sub-filters {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
  flex: 1;
}
.sub-filter {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
}
.sub-filter-grow { flex: 1; min-width: 200px; }
.sub-filter label {
  font-size: 11px;
  font-weight: 600;
  color: var(--sub-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sub-filter select,
.sub-filter input {
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius-sm);
  padding: 8px 10px;
  color: var(--sub-text);
  font-size: 13px;
  font-family: inherit;
}
.sub-filter input:focus,
.sub-filter select:focus {
  outline: none;
  border-color: var(--sub-accent);
  box-shadow: 0 0 0 3px var(--sub-accent-glow);
}
.sub-meta {
  display: flex;
  align-items: center;
  margin-left: auto;
}
.sub-count {
  font-size: 12px;
  color: var(--sub-text-muted);
  font-variant-numeric: tabular-nums;
}

/* ────────── Buttons ────────── */
.sub-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--sub-radius-sm);
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-border);
  color: var(--sub-text);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.sub-btn:hover:not(:disabled) {
  background: var(--sub-bg-3);
  border-color: rgba(255, 255, 255, 0.15);
}
.sub-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.sub-btn-primary {
  background: linear-gradient(180deg, var(--sub-accent), var(--sub-accent-soft));
  border-color: var(--sub-accent);
  color: #021a1f;
  box-shadow: 0 2px 10px var(--sub-accent-glow);
}
.sub-btn-primary:hover:not(:disabled) {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.sub-btn-danger {
  background: var(--sub-danger);
  border-color: var(--sub-danger);
  color: #fff;
}
.sub-btn-danger:hover:not(:disabled) { filter: brightness(1.1); }

.sub-btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

/* ────────── Loading state ────────── */
.sub-loading {
  text-align: center;
  padding: 60px 20px;
  color: var(--sub-text-muted);
}
.sub-spinner {
  display: inline-block;
  width: 36px;
  height: 36px;
  border: 3px solid var(--sub-border);
  border-top-color: var(--sub-accent);
  border-radius: 50%;
  animation: sub-spin 0.8s linear infinite;
  margin-bottom: 14px;
}
@keyframes sub-spin { to { transform: rotate(360deg); } }

.sub-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--sub-text-muted);
}
.sub-empty-icon { font-size: 48px; opacity: 0.4; margin-bottom: 12px; }
.sub-empty p { margin: 0 0 16px; }

/* ────────── Codes list ────────── */
.sub-codes-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sub-code-card {
  background: var(--sub-bg-1);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius);
  overflow: hidden;
  transition: border-color 0.15s;
}
.sub-code-card:hover { border-color: rgba(255, 255, 255, 0.15); }
.sub-code-card.is-inactive { opacity: 0.6; }
.sub-code-card.is-expired { border-color: rgba(239, 68, 68, 0.25); }

.sub-code-row {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) auto auto auto auto;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
}

.sub-code-main { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.sub-code-name {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 15px;
  font-weight: 700;
  color: var(--sub-text);
  letter-spacing: 0.5px;
}
.sub-code-desc {
  font-size: 12px;
  color: var(--sub-text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sub-code-discount {
  font-size: 18px;
  font-weight: 800;
  color: var(--sub-accent);
  font-variant-numeric: tabular-nums;
}

.sub-code-tiers { display: flex; gap: 4px; flex-wrap: wrap; }

.sub-tier-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sub-tier-basic   { background: rgba(96, 165, 250, 0.15); color: #60a5fa; }
.sub-tier-premium { background: rgba(251, 191, 36, 0.15); color: #fbbf24; }
.sub-tier-elite   { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.sub-tier-all     { background: rgba(154, 154, 171, 0.15); color: var(--sub-text-muted); }

.sub-code-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  text-align: right;
}
.sub-stat-num {
  font-size: 14px;
  font-weight: 700;
  color: var(--sub-text);
  font-variant-numeric: tabular-nums;
}
.sub-stat-label {
  font-size: 10px;
  color: var(--sub-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.sub-code-actions { display: flex; gap: 6px; align-items: center; }

.sub-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sub-status-pill::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  display: inline-block;
}
.sub-status-active   { background: rgba(16, 185, 129, 0.12); color: var(--sub-success); }
.sub-status-active::before   { background: var(--sub-success); }
.sub-status-inactive { background: rgba(154, 154, 171, 0.12); color: var(--sub-text-muted); }
.sub-status-inactive::before { background: var(--sub-text-muted); }
.sub-status-expired  { background: rgba(239, 68, 68, 0.12); color: var(--sub-danger); }
.sub-status-expired::before  { background: var(--sub-danger); }

/* Expanded row — redemptions */
.sub-code-details {
  display: none;
  border-top: 1px solid var(--sub-border-soft);
  padding: 14px 18px;
  background: var(--sub-bg-2);
}
.sub-code-card.is-expanded .sub-code-details { display: block; }

.sub-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}
.sub-meta-cell {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sub-meta-key {
  font-size: 10px;
  color: var(--sub-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sub-meta-val {
  font-size: 13px;
  color: var(--sub-text);
}

.sub-redemptions-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.sub-redemptions-table th,
.sub-redemptions-table td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--sub-border-soft);
}
.sub-redemptions-table th {
  font-size: 10px;
  font-weight: 700;
  color: var(--sub-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--sub-bg-1);
}
.sub-redemptions-table td { color: var(--sub-text-muted); }
.sub-redemptions-table td:first-child { color: var(--sub-text); }
.sub-redemptions-empty {
  text-align: center;
  padding: 24px;
  color: var(--sub-text-dim);
  font-size: 12px;
  font-style: italic;
}

/* ────────── Modal ────────── */
.sub-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: sub-fade-in 0.18s ease-out;
}
@keyframes sub-fade-in { from { opacity: 0; } to { opacity: 1; } }

.sub-modal {
  background: var(--sub-bg-1);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius);
  width: 100%;
  max-width: 720px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.sub-modal-small { max-width: 440px; }

.sub-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--sub-border);
}
.sub-modal-header h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0;
  color: var(--sub-text);
}
.sub-modal-close {
  background: none;
  border: none;
  color: var(--sub-text-muted);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 4px;
}
.sub-modal-close:hover { background: var(--sub-bg-3); color: var(--sub-text); }

.sub-modal-body {
  padding: 18px 22px;
  overflow-y: auto;
  flex: 1;
}

.sub-modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  padding: 14px 22px;
  border-top: 1px solid var(--sub-border);
  background: var(--sub-bg-deep);
}

/* ────────── Form ────────── */
.sub-form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 14px;
}
.sub-form-row {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-bottom: 14px;
}
.sub-form-row label,
.sub-form-row > label:first-child {
  font-size: 12px;
  font-weight: 600;
  color: var(--sub-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.sub-form-row input[type="text"],
.sub-form-row input[type="number"],
.sub-form-row input[type="datetime-local"],
.sub-form-row textarea,
.sub-form-row select {
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius-sm);
  padding: 9px 12px;
  color: var(--sub-text);
  font-size: 13px;
  font-family: inherit;
  width: 100%;
  box-sizing: border-box;
}
.sub-form-row input:focus,
.sub-form-row textarea:focus,
.sub-form-row select:focus {
  outline: none;
  border-color: var(--sub-accent);
  box-shadow: 0 0 0 3px var(--sub-accent-glow);
}
.sub-form-row textarea {
  resize: vertical;
  min-height: 60px;
  font-family: inherit;
}

.sub-req { color: var(--sub-danger); }
.sub-hint {
  font-size: 11px;
  color: var(--sub-text-dim);
  line-height: 1.5;
}
.sub-hint code {
  background: var(--sub-bg-2);
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 10px;
  color: var(--sub-accent);
}

.sub-form-row-checks {
  flex-direction: column;
  gap: 12px;
}

.sub-check {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  padding: 10px 12px;
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius-sm);
  transition: border-color 0.15s;
}
.sub-check:hover { border-color: rgba(255,255,255,0.15); }
.sub-check > input[type="checkbox"] { display: none; }
.sub-check > span {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--sub-text);
  text-transform: none;
  letter-spacing: 0;
}
.sub-check > span::before {
  content: '';
  width: 16px;
  height: 16px;
  border-radius: 3px;
  border: 1.5px solid var(--sub-border);
  background: var(--sub-bg-deep);
  flex-shrink: 0;
  display: inline-block;
  transition: all 0.15s;
}
.sub-check > input:checked + span::before {
  background: var(--sub-accent);
  border-color: var(--sub-accent);
  box-shadow: inset 0 0 0 2px var(--sub-bg-deep);
}
.sub-check .sub-hint { margin-top: 4px; margin-left: 24px; }

/* Radio group */
.sub-radio-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.sub-radio {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius-sm);
  cursor: pointer;
  transition: border-color 0.15s;
}
.sub-radio:hover { border-color: rgba(255,255,255,0.15); }
.sub-radio input { margin-top: 2px; accent-color: var(--sub-accent); }
.sub-radio span {
  font-size: 13px;
  color: var(--sub-text);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}
.sub-radio strong { font-weight: 600; }

.sub-usage-detail {
  margin-top: 8px;
  padding: 10px 12px;
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-accent-glow);
  border-radius: var(--sub-radius-sm);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.sub-usage-detail label {
  font-size: 11px;
  color: var(--sub-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Tier picker */
.sub-tier-picker {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.sub-tier-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--sub-bg-2);
  border: 1px solid var(--sub-border);
  border-radius: var(--sub-radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}
.sub-tier-chip:hover { border-color: rgba(255,255,255,0.15); }
.sub-tier-chip input { accent-color: var(--sub-accent); }
.sub-tier-chip:has(input:checked) {
  border-color: var(--sub-accent);
  background: rgba(6, 182, 212, 0.06);
}

.sub-modal-error {
  margin-top: 12px;
  padding: 10px 12px;
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--sub-radius-sm);
  color: #fca5a5;
  font-size: 13px;
}

/* ────────── Toast ────────── */
.sub-toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 18px;
  border-radius: var(--sub-radius-sm);
  background: var(--sub-bg-1);
  border: 1px solid var(--sub-border);
  color: var(--sub-text);
  font-size: 13px;
  font-weight: 500;
  z-index: 2000;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
  max-width: 380px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
.sub-toast.show {
  opacity: 1;
  transform: translateY(0);
}
.sub-toast.t-success { border-color: var(--sub-success); color: var(--sub-success); }
.sub-toast.t-error   { border-color: var(--sub-danger);  color: #fca5a5; }
.sub-toast.t-warn    { border-color: var(--sub-warn);    color: var(--sub-warn); }
.sub-toast.t-info    { border-color: var(--sub-info);    color: var(--sub-info); }

/* ────────── Mobile ────────── */
@media (max-width: 720px) {
  .sub-main { padding: 18px 14px 60px; }
  .sub-page-header h1 { font-size: 24px; }
  .sub-code-row {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .sub-code-stats { align-items: flex-start; flex-direction: row; gap: 16px; }
  .sub-form-grid { grid-template-columns: 1fr; }
  .sub-toolbar { flex-direction: column; align-items: stretch; }
  .sub-meta { margin-left: 0; justify-content: flex-end; }
}