.smcb-root {
  --smcb-bg: #ffffff;
  --smcb-border: #d6dde6;
  --smcb-text: #1f2933;
  --smcb-muted: #5f6b7a;
  --smcb-accent: #0f766e;
  --smcb-accent-dark: #115e59;
  --smcb-user: #e7f5f3;
  --smcb-bot: #f4f6f8;
  bottom: 24px;
  color: var(--smcb-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  position: fixed;
  right: 24px;
  z-index: 99999;
}

.smcb-root * {
  box-sizing: border-box;
}

.smcb-toggle {
  align-items: center;
  background: var(--smcb-accent);
  border: 0;
  border-radius: 999px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.22);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  font-size: 26px;
  font-weight: 700;
  height: 56px;
  justify-content: center;
  line-height: 1;
  width: 56px;
}

.smcb-toggle:hover,
.smcb-toggle:focus {
  background: var(--smcb-accent-dark);
}

.smcb-panel {
  background: var(--smcb-bg);
  border: 1px solid var(--smcb-border);
  border-radius: 8px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.2);
  display: flex;
  flex-direction: column;
  height: min(620px, calc(100vh - 112px));
  margin-bottom: 12px;
  overflow: hidden;
  width: min(380px, calc(100vw - 32px));
}

.smcb-panel[hidden] {
  display: none;
}

.smcb-header {
  align-items: center;
  background: #0f172a;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  min-height: 52px;
  padding: 12px 14px;
}

.smcb-title {
  font-size: 15px;
  font-weight: 700;
}

.smcb-close {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 6px;
  color: #ffffff;
  cursor: pointer;
  font-size: 12px;
  min-height: 30px;
  padding: 4px 8px;
}

.smcb-messages {
  background: #fbfcfd;
  flex: 1;
  overflow-y: auto;
  padding: 14px;
}

.smcb-message {
  display: flex;
  margin: 0 0 10px;
}

.smcb-message-user {
  justify-content: flex-end;
}

.smcb-message-bot {
  justify-content: flex-start;
}

.smcb-bubble {
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.65;
  max-width: 86%;
  overflow-wrap: anywhere;
  padding: 10px 12px;
  white-space: pre-wrap;
}

.smcb-message-user .smcb-bubble {
  background: var(--smcb-user);
  border: 1px solid #b7ddd8;
}

.smcb-message-bot .smcb-bubble {
  background: var(--smcb-bot);
  border: 1px solid #e3e7ec;
}

.smcb-link {
  color: var(--smcb-accent-dark);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 2px;
}

.smcb-link:focus,
.smcb-link:hover {
  color: var(--smcb-accent);
}

.smcb-warning {
  background: #fff7ed;
  border-top: 1px solid #fed7aa;
  color: #9a3412;
  font-size: 12px;
  line-height: 1.5;
  padding: 9px 12px;
}

.smcb-warning[hidden] {
  display: none;
}

.smcb-form {
  align-items: flex-end;
  background: #ffffff;
  border-top: 1px solid var(--smcb-border);
  display: flex;
  gap: 8px;
  padding: 10px;
}

.smcb-input {
  border: 1px solid #c9d2dd;
  border-radius: 6px;
  color: var(--smcb-text);
  flex: 1;
  font: inherit;
  font-size: 14px;
  line-height: 1.5;
  max-height: 112px;
  min-height: 42px;
  padding: 9px 10px;
  resize: vertical;
}

.smcb-input:focus {
  border-color: var(--smcb-accent);
  box-shadow: 0 0 0 2px rgba(15, 118, 110, 0.14);
  outline: none;
}

.smcb-submit {
  background: var(--smcb-accent);
  border: 0;
  border-radius: 6px;
  color: #ffffff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  min-height: 42px;
  padding: 0 14px;
  white-space: nowrap;
}

.smcb-submit:hover,
.smcb-submit:focus {
  background: var(--smcb-accent-dark);
}

.smcb-submit:disabled,
.smcb-input:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

@media (max-width: 480px) {
  .smcb-root {
    bottom: 16px;
    right: 16px;
  }

  .smcb-panel {
    height: min(560px, calc(100vh - 96px));
  }
}