/* TB-Briefing */
[data-tb-briefing] {
  max-width: 760px;
  margin: 0 auto;
}
.tb-br-progress {
  display: flex; gap: .25rem;
  margin-bottom: 1.5rem;
}
.tb-br-progress span {
  flex: 1; height: 6px;
  background: var(--tb-line);
  border-radius: 999px;
  transition: background 200ms;
}
.tb-br-progress span.active { background: var(--tb-primary-700); }

.tb-br-step { display: none; animation: tbbr-fade 200ms ease both; }
.tb-br-step.active { display: block; }
@keyframes tbbr-fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }

.tb-br-step h2 { margin-top: 0; }
.tb-br-field { margin-bottom: 1rem; }
.tb-br-field label { display: block; font-weight: 600; margin-bottom: .35rem; }
.tb-br-field input, .tb-br-field select, .tb-br-field textarea {
  width: 100%;
  padding: .65rem .75rem;
  border: 1px solid var(--tb-line);
  border-radius: var(--radius-md);
  background: var(--tb-bg-card);
  color: var(--tb-ink-900);
  font: inherit;
}
.tb-br-field textarea { min-height: 120px; resize: vertical; }
.tb-br-field input:focus, .tb-br-field select:focus, .tb-br-field textarea:focus {
  outline: 2px solid var(--tb-primary-500); border-color: var(--tb-primary-500);
}
.tb-br-checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .5rem; }
.tb-br-checks label {
  padding: .65rem .85rem;
  border: 1px solid var(--tb-line);
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex; align-items: center; gap: .5rem;
  background: var(--tb-bg-card);
}
.tb-br-checks input { margin: 0; }
.tb-br-checks label:hover { border-color: var(--tb-primary-500); }
.tb-br-checks input:checked + span { font-weight: 700; color: var(--tb-primary-700); }

.tb-br-radios { display: flex; gap: .5rem; flex-wrap: wrap; }
.tb-br-radios label {
  padding: .55rem 1rem;
  border: 1px solid var(--tb-line);
  border-radius: var(--radius-pill);
  cursor: pointer;
  background: var(--tb-bg-card);
}
.tb-br-radios label.is-active { background: var(--tb-primary-700); color: #fff; border-color: var(--tb-primary-700); }

.tb-br-actions { display: flex; justify-content: space-between; gap: .5rem; margin-top: 2rem; }
.tb-br-suggestions { margin-top: .75rem; display: grid; gap: .5rem; }
.tb-br-suggestion {
  border: 1px dashed var(--tb-accent-cyan);
  background: color-mix(in srgb, var(--tb-accent-cyan) 6%, var(--tb-bg-card));
  padding: .65rem .85rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: .95rem;
}
.tb-br-suggestion:hover { background: color-mix(in srgb, var(--tb-accent-cyan) 12%, var(--tb-bg-card)); }

/* Honeypot */
.tb-br-hp { position: absolute; left: -9999px; opacity: 0; pointer-events: none; height: 0; overflow: hidden; }

.tb-br-success {
  text-align: center; padding: 3rem 1rem;
}
.tb-br-success h2 { color: var(--tb-accent-emerald); }

/* Intro-Hinweis am Anfang des ersten Steps (Email-Erstkontakt-Policy) */
.tb-br-intro {
  background: color-mix(in srgb, var(--tb-primary-50) 60%, var(--tb-bg-card));
  border: 1px solid color-mix(in srgb, var(--tb-primary-700) 18%, transparent);
  border-left: 4px solid var(--tb-primary-700);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--tb-ink-700);
  margin: 0 0 1.5rem;
}
.tb-br-intro strong { color: var(--tb-ink-900); }
.tb-br-intro em { color: var(--tb-primary-700); font-style: normal; font-weight: 600; }

/* Validation-Error: rote dezente Pille direkt über den Action-Buttons */
.tb-br-error {
  background: color-mix(in srgb, #ef4444 8%, var(--tb-bg-card));
  border: 1px solid color-mix(in srgb, #ef4444 35%, transparent);
  border-left: 4px solid #ef4444;
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 14px;
  line-height: 1.5;
  color: #991b1b;
  margin: 1rem 0;
  font-weight: 500;
}

/* ── Modus-Toggle (Form ↔ KI-Chat) ───────────────────────────────── */
.tb-br-modes {
  display: flex;
  gap: 8px;
  margin: 0 0 1.5rem;
  flex-wrap: wrap;
}
.tb-br-mode {
  flex: 1 1 220px;
  appearance: none;
  background: var(--tb-bg-card);
  border: 1px solid var(--tb-line);
  border-radius: 12px;
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--tb-ink-700);
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  transition: border-color .15s, background .15s, color .15s;
}
.tb-br-mode:hover { border-color: var(--tb-primary-200); }
.tb-br-mode.is-active {
  background: color-mix(in srgb, var(--tb-primary-700) 8%, var(--tb-bg-card));
  border-color: var(--tb-primary-700);
  color: var(--tb-primary-700);
}
.tb-br-mode__hint {
  font-weight: 400;
  color: var(--tb-ink-500);
  font-size: 0.85em;
}

/* ── Chat-Modus ──────────────────────────────────────────────────── */
.tb-br-chat {
  background: var(--tb-bg-card);
  border: 1px solid var(--tb-line);
  border-radius: 14px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.tb-br-chat__head h2 { margin: 0 0 6px; font-size: 1.25rem; }
.tb-br-chat__head p { margin: 0; color: var(--tb-ink-500); font-size: 14px; line-height: 1.55; }

.tb-br-extracted {
  background: color-mix(in srgb, var(--tb-primary-50) 50%, var(--tb-bg-card));
  border: 1px solid color-mix(in srgb, var(--tb-primary-700) 12%, transparent);
  border-radius: 10px;
  padding: 8px 14px;
}
.tb-br-extracted summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  color: var(--tb-ink-900);
  list-style: revert;
}
.tb-br-extracted__count {
  color: var(--tb-primary-700);
  font-weight: 700;
  margin-left: 4px;
}
.tb-br-extracted__list {
  display: grid;
  grid-template-columns: minmax(120px, max-content) 1fr;
  gap: 4px 18px;
  margin: 10px 0 4px;
  font-size: 13.5px;
}
.tb-br-extracted__list dt {
  font-weight: 700;
  color: var(--tb-ink-500);
  text-transform: uppercase;
  font-size: 11px;
  letter-spacing: 0.05em;
  align-self: center;
}
.tb-br-extracted__list dd {
  margin: 0;
  color: var(--tb-ink-700);
  align-self: center;
}

.tb-br-cost {
  background: color-mix(in srgb, #16a34a 8%, var(--tb-bg-card));
  border: 1px solid color-mix(in srgb, #16a34a 35%, transparent);
  border-left: 4px solid #16a34a;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--tb-ink-700);
}
.tb-br-cost strong { color: #15803d; }
.tb-br-cost small {
  display: block;
  margin-top: 4px;
  color: var(--tb-ink-500);
  font-size: 12px;
  line-height: 1.4;
}

.tb-br-chat__log {
  min-height: 180px;
  max-height: 420px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 10px 0;
}
.tb-br-chat__msg {
  display: flex;
}
.tb-br-chat__msg--user { justify-content: flex-end; }
.tb-br-chat__msg--assistant { justify-content: flex-start; }
.tb-br-chat__bubble {
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 12px;
  line-height: 1.55;
  font-size: 14.5px;
}
.tb-br-chat__msg--user .tb-br-chat__bubble {
  background: var(--tb-primary-700);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.tb-br-chat__msg--assistant .tb-br-chat__bubble {
  background: var(--tb-bg);
  color: var(--tb-ink-900);
  border: 1px solid var(--tb-line);
  border-bottom-left-radius: 4px;
}
.tb-br-chat__loading .tb-br-chat__bubble { color: var(--tb-ink-500); font-style: italic; }

.tb-br-chat__form {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.tb-br-chat__form textarea {
  resize: vertical;
  min-height: 60px;
  padding: 12px;
  border: 1px solid var(--tb-line);
  border-radius: 10px;
  font: inherit;
  font-size: 14.5px;
  line-height: 1.5;
}
.tb-br-chat__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.tb-br-chat__actions .tb-btn { font-size: 14px; }
.tb-br-chat__hint {
  margin: 0;
  font-size: 12.5px;
  color: var(--tb-ink-500);
  line-height: 1.5;
}

/* E-Mail-Preview nach Done, editierbarer Text + Mailto-Open */
.tb-br-email-preview {
  background: color-mix(in srgb, var(--tb-primary-50) 35%, var(--tb-bg-card));
  border: 2px solid var(--tb-primary-700);
  border-radius: 14px;
  padding: 1.5rem;
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.tb-br-email-preview__head h3 { margin: 0 0 6px; font-size: 1.15rem; color: var(--tb-primary-700); }
.tb-br-email-preview__head p { margin: 0; color: var(--tb-ink-700); font-size: 14px; line-height: 1.55; }
.tb-br-email-preview__head strong { color: var(--tb-ink-900); }
.tb-br-email-preview__label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--tb-ink-500);
  margin-bottom: 4px;
}
.tb-br-email-preview__label small {
  display: block;
  font-weight: 400;
  font-size: 11px;
  color: var(--tb-ink-500);
  letter-spacing: 0;
  text-transform: none;
  margin-top: 2px;
}
.tb-br-email-preview__from,
.tb-br-email-preview__subject {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--tb-line);
  border-radius: 8px;
  font: inherit;
  font-size: 14.5px;
  background: var(--tb-bg-card);
}
.tb-br-email-preview__body {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--tb-line);
  border-radius: 8px;
  font: 13.5px/1.55 ui-monospace, 'SF Mono', Consolas, monospace;
  resize: vertical;
  background: var(--tb-bg-card);
  color: var(--tb-ink-900);
  white-space: pre;
}
.tb-br-email-preview__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.tb-br-email-preview__legal {
  margin: 0;
  font-size: 11.5px;
  color: var(--tb-ink-500);
  line-height: 1.45;
  font-style: italic;
}

/* Aktiver Step bekommt visuellen Hint wenn ungültig */
.tb-br-step--invalid {
  animation: tb-br-shake 0.4s cubic-bezier(.36,.07,.19,.97);
}
.tb-br-step--invalid input:invalid:required,
.tb-br-step--invalid textarea:invalid:required,
.tb-br-step--invalid select:invalid {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.10);
}
@keyframes tb-br-shake {
  10%, 90% { transform: translateX(-1px); }
  20%, 80% { transform: translateX(2px); }
  30%, 50%, 70% { transform: translateX(-3px); }
  40%, 60% { transform: translateX(3px); }
}
@media (prefers-reduced-motion: reduce) {
  .tb-br-step--invalid { animation: none; }
}