/* =========================================================
   FRAG OPA SCHLAU – gekapselte Chatbot-Erweiterung
   Bestehende Website-Styles werden nicht überschrieben.
========================================================= */

.opa-chat,
.opa-chat * {
  box-sizing: border-box;
}

.opa-chat {
  --opa-blue: #164E70;
  --opa-blue-dark: #0F3953;
  --opa-pink: #C63D78;
  --opa-gold: #F4C44E;
  --opa-green: #0B6B43;
  --opa-text: #1B2730;
  --opa-muted: #59666D;
  --opa-border: #D9E2E5;
  --opa-bg: #FFF9EF;

  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 10000;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--opa-text);
}

.opa-chat-toggle {
  display: flex;
  align-items: center;
  gap: .65rem;
  min-height: 3.5rem;
  padding: .4rem 1rem .4rem .4rem;
  border: 0;
  border-radius: 999px;
  background: var(--opa-blue);
  color: #fff;
  font: inherit;
  font-weight: 800;
  line-height: 1.1;
  cursor: pointer;
  box-shadow: 0 14px 38px rgba(15,57,83,.25);
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.opa-chat-toggle:hover {
  transform: translateY(-2px);
  background: var(--opa-blue-dark);
  box-shadow: 0 17px 42px rgba(15,57,83,.30);
}

.opa-chat-toggle:focus-visible,
.opa-chat-close:focus-visible,
.opa-chat-send:focus-visible,
.opa-chat-form textarea:focus-visible {
  outline: 3px solid var(--opa-gold);
  outline-offset: 3px;
}

.opa-chat-avatar,
.opa-chat-header-avatar {
  display: grid;
  place-items: center;
  overflow: hidden;
  flex: 0 0 auto;
  border-radius: 50%;
  background: #fff;
}

.opa-chat-avatar {
  width: 2.7rem;
  height: 2.7rem;
  border: 2px solid rgba(255,255,255,.9);
}

.opa-chat-header-avatar {
  width: 3rem;
  height: 3rem;
  border: 2px solid rgba(255,255,255,.82);
}

.opa-chat-avatar img,
.opa-chat-header-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 18%;
}

.opa-chat-panel {
  position: absolute;
  right: 0;
  bottom: 4.65rem;
  width: min(25rem, calc(100vw - 2rem));
  height: min(38rem, calc(100vh - 7rem));
  min-height: 28rem;
  overflow: hidden;
  border: 1px solid var(--opa-border);
  border-radius: 1.35rem;
  background: #fff;
  box-shadow: 0 24px 72px rgba(27,39,48,.23);
}

.opa-chat-panel:not([hidden]) {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.opa-chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.7rem;
  padding: .8rem .85rem .8rem 1rem;
  background: linear-gradient(135deg, var(--opa-blue), var(--opa-green));
  color: #fff;
}

.opa-chat-identity {
  display: flex;
  align-items: center;
  gap: .75rem;
  min-width: 0;
}

.opa-chat-identity strong,
.opa-chat-identity span {
  display: block;
}

.opa-chat-identity strong {
  font-size: 1rem;
  line-height: 1.2;
}

.opa-chat-identity span {
  margin-top: .15rem;
  color: rgba(255,255,255,.82);
  font-size: .76rem;
}

.opa-chat-close {
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  flex: 0 0 2.4rem;
  border: 0;
  border-radius: 50%;
  background: rgba(255,255,255,.12);
  color: #fff;
  font: inherit;
  font-size: 1.65rem;
  line-height: 1;
  cursor: pointer;
}

.opa-chat-close:hover {
  background: rgba(255,255,255,.22);
}

.opa-chat-messages {
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1rem;
  background:
    radial-gradient(circle at 100% 0, rgba(83,183,211,.12), transparent 11rem),
    linear-gradient(180deg, #fff, var(--opa-bg));
  scrollbar-width: thin;
}

.opa-chat-message {
  width: fit-content;
  max-width: 88%;
  margin: 0 0 .75rem;
  padding: .72rem .88rem;
  border-radius: 1rem;
  font-size: .92rem;
  line-height: 1.48;
  overflow-wrap: anywhere;
}

.opa-chat-message p,
.opa-chat-note p,
.opa-chat-legal {
  margin: 0;
}

.opa-chat-message-bot {
  margin-right: auto;
  border: 1px solid var(--opa-border);
  border-bottom-left-radius: .3rem;
  background: #fff;
}

.opa-chat-message-user {
  margin-left: auto;
  border-bottom-right-radius: .3rem;
  background: var(--opa-blue);
  color: #fff;
}

.opa-chat-message-error {
  margin-right: auto;
  border: 1px solid #f1b7b7;
  background: #fff0f0;
  color: #7a2525;
}

.opa-chat-message-thinking {
  color: var(--opa-muted);
  font-style: italic;
}

.opa-chat-note {
  margin: .2rem 0 .8rem;
  padding: .65rem .75rem;
  border-radius: .8rem;
  background: #fff3c8;
  color: var(--opa-muted);
  font-size: .72rem;
  line-height: 1.4;
}

.opa-chat-form {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: .55rem;
  padding: .75rem;
  border-top: 1px solid var(--opa-border);
  background: #fff;
}

.opa-chat-form textarea {
  width: 100%;
  min-width: 0;
  min-height: 3rem;
  max-height: 8rem;
  resize: vertical;
  border: 1px solid #bdcbd1;
  border-radius: .85rem;
  background: #fff;
  color: var(--opa-text);
  padding: .72rem .8rem;
  font: inherit;
  font-size: .9rem;
  line-height: 1.35;
}

.opa-chat-form textarea::placeholder {
  color: #78868c;
}

.opa-chat-send {
  align-self: end;
  min-height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border: 0;
  border-radius: .85rem;
  padding: .7rem .9rem;
  background: var(--opa-pink);
  color: #fff;
  font: inherit;
  font-size: .86rem;
  font-weight: 800;
  cursor: pointer;
}

.opa-chat-send:hover {
  filter: brightness(.94);
}

.opa-chat-send:disabled,
.opa-chat-form textarea:disabled {
  cursor: wait;
  opacity: .65;
}

.opa-chat-legal {
  grid-column: 1 / -1;
  color: var(--opa-muted);
  font-size: .66rem;
  line-height: 1.35;
}

.opa-chat-legal a {
  color: var(--opa-blue);
}

@media (max-width: 40rem) {
  .opa-chat {
    right: .75rem;
    bottom: .75rem;
  }

  .opa-chat-toggle-text {
    font-size: .88rem;
  }

  .opa-chat-panel {
    position: fixed;
    inset: .65rem;
    width: auto;
    height: auto;
    min-height: 0;
    max-height: none;
    border-radius: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .opa-chat-toggle {
    transition: none;
  }
}