:root {
  --mkai-bg: #ffffff;
  --mkai-text: #111827;
  --mkai-muted: #6b7280;
  --mkai-border: #d1d5db;
  --mkai-primary: #2563eb;
  --mkai-primary-text: #ffffff;
  --mkai-shadow: 0 20px 45px rgba(15, 23, 42, 0.18);
}

.mkai-button {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 2147483000;
  width: 56px;
  height: 56px;
  border: 0;
  border-radius: 50%;
  background: var(--mkai-primary);
  color: var(--mkai-primary-text);
  box-shadow: var(--mkai-shadow);
  cursor: pointer;
  font: 700 14px/1 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.mkai-button-has-icon {
  padding: 0;
  background: #ffffff;
  overflow: hidden;
}

.mkai-button-icon {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mkai-panel {
  position: fixed;
  right: 24px;
  bottom: 92px;
  z-index: 2147483000;
  display: none;
  width: min(380px, calc(100vw - 32px));
  height: min(560px, calc(100vh - 128px));
  background: var(--mkai-bg);
  color: var(--mkai-text);
  border: 1px solid var(--mkai-border);
  border-radius: 8px;
  box-shadow: var(--mkai-shadow);
  overflow: hidden;
  font: 14px/1.5 system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.mkai-panel[data-open="true"] {
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.mkai-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--mkai-border);
  font-weight: 700;
}

.mkai-close {
  width: 30px;
  height: 30px;
  border: 0;
  background: transparent;
  color: var(--mkai-muted);
  cursor: pointer;
  font-size: 22px;
  line-height: 1;
}

.mkai-messages {
  overflow: auto;
  padding: 14px;
  background: #f9fafb;
}

.mkai-message {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: 8px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  white-space: normal;
}

.mkai-message[data-role="user"] {
  margin-left: 34px;
  background: #eff6ff;
  border-color: #bfdbfe;
  white-space: pre-wrap;
}

.mkai-message[data-role="assistant"] {
  margin-right: 24px;
}

.mkai-message pre {
  overflow: auto;
  padding: 10px;
  margin: 10px 0;
  border-radius: 6px;
  background: #111827;
  color: #f9fafb;
}

.mkai-message p {
  margin: 0 0 10px;
}

.mkai-message p:last-child {
  margin-bottom: 0;
}

.mkai-message h1,
.mkai-message h2,
.mkai-message h3,
.mkai-message h4 {
  margin: 12px 0 8px;
  color: var(--mkai-text);
  line-height: 1.3;
}

.mkai-message h1 {
  font-size: 20px;
}

.mkai-message h2 {
  font-size: 18px;
}

.mkai-message h3 {
  font-size: 16px;
}

.mkai-message h4 {
  font-size: 15px;
}

.mkai-message ul,
.mkai-message ol {
  margin: 8px 0 10px 20px;
  padding: 0;
}

.mkai-message li {
  margin: 4px 0;
}

.mkai-table-wrap {
  overflow-x: auto;
  margin: 10px 0;
}

.mkai-message table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  white-space: normal;
}

.mkai-message th,
.mkai-message td {
  border: 1px solid #d1d5db;
  padding: 6px 8px;
  vertical-align: top;
}

.mkai-message th {
  background: #f3f4f6;
  font-weight: 700;
}

.mkai-math {
  font-family: ui-serif, "Times New Roman", Times, serif;
}

.mkai-math-inline {
  display: inline;
  white-space: nowrap;
}

.mkai-math-display {
  display: block;
  overflow-x: auto;
  margin: 10px 0;
  padding: 8px 10px;
  border-radius: 6px;
  background: #f3f4f6;
  white-space: nowrap;
}

.mkai-sources {
  margin-top: 8px;
  display: grid;
  gap: 4px;
}

.mkai-sources a {
  color: var(--mkai-primary);
  text-decoration: none;
  font-size: 13px;
}

.mkai-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--mkai-border);
  background: #ffffff;
}

.mkai-input {
  min-width: 0;
  min-height: 40px;
  max-height: 100px;
  resize: vertical;
  border: 1px solid var(--mkai-border);
  border-radius: 6px;
  padding: 9px 10px;
  color: var(--mkai-text);
  font: inherit;
}

.mkai-submit {
  width: 44px;
  height: 40px;
  border: 0;
  border-radius: 6px;
  background: var(--mkai-primary);
  color: var(--mkai-primary-text);
  cursor: pointer;
  font-size: 18px;
}

.mkai-submit:disabled {
  cursor: wait;
  opacity: 0.55;
}

@media (max-width: 767px) {
  .mkai-button {
    right: auto;
    left: 20px;
    bottom: 20px;
  }

  .mkai-panel {
    right: auto;
    left: 12px;
    bottom: 84px;
    width: calc(100vw - 24px);
    height: min(560px, calc(100vh - 112px));
  }
}