:root {
  --bg: var(--tg-theme-bg-color, #18181b);
  --bg2: var(--tg-theme-secondary-bg-color, #27272a);
  --text: var(--tg-theme-text-color, #fafafa);
  --hint: var(--tg-theme-hint-color, #a1a1aa);
  --link: var(--tg-theme-link-color, #818cf8);
  --btn-bg: var(--tg-theme-button-color, #6366f1);
  --btn-text: var(--tg-theme-button-text-color, #ffffff);
  --danger: #ef4444;
  --border: rgba(255,255,255,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --pad: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  min-height: 100vh;
  overscroll-behavior: none;
}

#app { display: flex; flex-direction: column; min-height: 100vh; }

.hidden { display: none !important; }

.center {
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  min-height: 80vh; gap: 12px;
  color: var(--hint);
}

.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--btn-bg);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── TABS ── */
.tabs {
  display: flex;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  position: sticky; top: 0; z-index: 10;
}

.tab {
  flex: 1; min-width: 70px;
  padding: 12px 8px;
  background: none; border: none;
  color: var(--hint);
  font-size: 13px; font-weight: 500;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
  white-space: nowrap;
}
.tab.active { color: var(--btn-bg); border-bottom-color: var(--btn-bg); }

/* ── TAB CONTENT ── */
.tab-content { padding: var(--pad); flex: 1; }
.tab-content h2 { font-size: 17px; margin-bottom: 12px; }
.tab-content h3 { font-size: 14px; color: var(--hint); margin-bottom: 8px; }

/* ── CARDS ── */
.card {
  background: var(--bg2);
  border-radius: var(--radius);
  padding: var(--pad);
  margin-bottom: 12px;
  border: 1px solid var(--border);
}

/* ── TEXTAREA ── */
textarea, input[type="text"], input[type="number"], select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 12px;
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color .2s;
}
textarea:focus, input:focus, select:focus {
  border-color: var(--btn-bg);
}
select { cursor: pointer; appearance: none; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 11px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 600;
  border: none; cursor: pointer;
  transition: opacity .15s;
  width: 100%; margin-top: 10px;
}
.btn:active { opacity: .75; }
.btn-primary  { background: var(--btn-bg); color: var(--btn-text); }
.btn-secondary { background: rgba(255,255,255,.08); color: var(--text); }
.btn-danger   { background: var(--danger); color: #fff; }
.btn-back {
  background: none; border: none; color: var(--link);
  font-size: 14px; cursor: pointer; padding: 0;
}

.btn-row { display: flex; gap: 8px; }
.btn-row .btn { flex: 1; }

/* ── LIST ── */
.list { display: flex; flex-direction: column; gap: 8px; }

.list-item {
  background: var(--bg2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  border: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  transition: border-color .15s;
}
.list-item:active { border-color: var(--btn-bg); }
.list-item .item-name { font-weight: 500; }
.list-item .item-meta { font-size: 12px; color: var(--hint); }

/* ── TOGGLE ── */
.toggle-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0;
  cursor: pointer;
}
.toggle-row + .toggle-row { border-top: 1px solid var(--border); }
input[type="checkbox"] {
  width: 44px; height: 26px;
  appearance: none;
  background: rgba(255,255,255,.1);
  border-radius: 13px;
  cursor: pointer;
  position: relative;
  transition: background .2s;
  flex-shrink: 0;
  border: none; padding: 0;
}
input[type="checkbox"]::after {
  content: '';
  position: absolute;
  top: 3px; left: 3px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: #fff;
  transition: transform .2s;
}
input[type="checkbox"]:checked { background: var(--btn-bg); }
input[type="checkbox"]:checked::after { transform: translateX(18px); }

/* ── FIELD ROW ── */
.field-row { padding: 8px 0; border-top: 1px solid var(--border); }
.field-row label { display: block; font-size: 12px; color: var(--hint); margin-bottom: 6px; }
.field-row input { margin-top: 0; }

/* ── BACK ROW ── */
.back-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.back-row h2 { font-size: 16px; }

/* ── SECTION HEADER ── */
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }

/* ── BADGE ── */
.badge {
  font-size: 11px; color: var(--hint);
  background: rgba(255,255,255,.06);
  padding: 2px 8px; border-radius: 20px;
}

/* ── CHAR COUNT ── */
.char-count { font-size: 12px; color: var(--hint); }

/* ── STAT ROW ── */
.stat-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}
.stat-row:last-child { border-bottom: none; }
.stat-row span { color: var(--hint); font-size: 13px; }
.stat-row strong { font-size: 14px; }

/* ── FACTS ── */
.facts-container { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; min-height: 24px; }
.fact-tag {
  display: inline-flex; align-items: center; gap: 4px;
  background: rgba(99,102,241,.18);
  border: 1px solid rgba(99,102,241,.35);
  border-radius: 20px;
  padding: 4px 10px;
  font-size: 13px;
}
.fact-tag .rm { background: none; border: none; color: var(--hint); cursor: pointer; font-size: 15px; padding: 0 2px; }

.add-fact-row { display: flex; gap: 8px; margin-bottom: 8px; }
.add-fact-row input { flex: 1; }
.add-fact-row .btn { width: auto; margin-top: 0; padding: 10px 16px; }

/* ── SUB-TABS ── */
.sub-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 12px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.sub-tab {
  flex: 1; min-width: 60px;
  padding: 8px 6px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--hint);
  font-size: 12px; font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all .2s;
}
.sub-tab.active { background: var(--btn-bg); color: var(--btn-text); border-color: var(--btn-bg); }

.sub-content { }

/* ── CONTEXT VIEWER ── */
.ctx-entry {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  overflow: hidden;
}
.ctx-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 8px 12px;
  cursor: pointer;
  user-select: none;
}
.ctx-role {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px;
}
.ctx-role.user { color: #60a5fa; }
.ctx-role.model, .ctx-role.assistant { color: #a78bfa; }
.ctx-preview { font-size: 12px; color: var(--hint); max-width: 70%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ctx-del { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 16px; padding: 0 4px; flex-shrink: 0; }
.ctx-body { padding: 0 12px 10px; font-size: 13px; color: var(--text); white-space: pre-wrap; word-break: break-word; display: none; }
.ctx-entry.expanded .ctx-body { display: block; }
.ctx-entry.expanded .ctx-header { border-bottom: 1px solid var(--border); }

/* ── TIME GRID ── */
.time-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin: 8px 0; }
.time-btn {
  padding: 10px 4px; background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text); font-size: 13px;
  cursor: pointer; transition: all .15s; text-align: center;
}
.time-btn.selected { background: var(--btn-bg); color: var(--btn-text); border-color: var(--btn-bg); }
.time-btn:active { opacity: .7; }

/* ── HINT TEXT ── */
.hint-text { font-size: 12px; color: var(--hint); }

/* ── ACCESS LIST ── */
.access-item {
  background: var(--bg2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 10px 12px;
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 6px;
}
.access-item .item-name { font-size: 14px; font-weight: 500; }
.access-item .item-meta { font-size: 11px; color: var(--hint); }
.access-actions { display: flex; gap: 6px; flex-shrink: 0; }
.icon-btn {
  background: none; border: 1px solid var(--border);
  border-radius: 6px; padding: 4px 10px;
  font-size: 13px; cursor: pointer; color: var(--text);
  transition: all .15s;
}
.icon-btn.approve { color: #22c55e; border-color: #22c55e33; }
.icon-btn.deny, .icon-btn.revoke { color: var(--danger); border-color: #ef444433; }

/* ── PENDING SECTION ── */
#pending-section { margin-bottom: 16px; }

/* ── MODEL SELECT optgroup ── */
#model-select { font-size: 13px; }