.gptalk-support-root {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 2147482000;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #102033;
}

.gptalk-support-button {
  width: 58px;
  height: 58px;
  border: 0;
  border-radius: 50%;
  background: #2563eb;
  color: #ffffff;
  box-shadow: 0 18px 36px rgba(37, 99, 235, 0.28);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.gptalk-support-button:hover {
  background: #1d4ed8;
}

.gptalk-support-badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: 999px;
  background: #ef4444;
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  line-height: 20px;
  text-align: center;
  box-shadow: 0 0 0 3px #ffffff;
}

.gptalk-support-badge:empty,
.gptalk-support-badge.is-hidden {
  display: none;
}

.gptalk-support-panel {
  position: absolute;
  right: 0;
  bottom: 72px;
  width: min(360px, calc(100vw - 28px));
  height: min(560px, calc(100vh - 118px));
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  overflow: hidden;
  border: 1px solid #d9e2f2;
  border-radius: 18px;
  background: #ffffff;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.22);
  transform-origin: bottom right;
}

.gptalk-support-panel.is-hidden {
  display: none;
}

.gptalk-support-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 16px 12px;
  border-bottom: 1px solid #e5ebf5;
  background: #f8fbff;
}

.gptalk-support-title {
  display: grid;
  gap: 2px;
}

.gptalk-support-title strong {
  color: #0f172a;
  font-size: 16px;
}

.gptalk-support-title span {
  color: #64748b;
  font-size: 12px;
}

.gptalk-support-close {
  width: 32px;
  height: 32px;
  border: 1px solid #d7e0ef;
  border-radius: 50%;
  background: #ffffff;
  color: #334155;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.gptalk-support-messages {
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow-y: auto;
  padding: 14px;
  background: #f6f9fd;
}

.gptalk-support-empty {
  margin: auto;
  max-width: 240px;
  color: #64748b;
  font-size: 13px;
  line-height: 1.45;
  text-align: center;
}

.gptalk-support-message {
  max-width: 86%;
  display: grid;
  gap: 4px;
}

.gptalk-support-message.is-user {
  align-self: flex-end;
}

.gptalk-support-message.is-operator {
  align-self: flex-start;
}

.gptalk-support-bubble {
  padding: 10px 12px;
  border-radius: 15px;
  font-size: 14px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.gptalk-support-message.is-user .gptalk-support-bubble {
  border-bottom-right-radius: 5px;
  background: #2563eb;
  color: #ffffff;
}

.gptalk-support-message.is-operator .gptalk-support-bubble {
  border: 1px solid #dde6f4;
  border-bottom-left-radius: 5px;
  background: #ffffff;
  color: #172033;
}

.gptalk-support-meta {
  color: #7b8798;
  font-size: 11px;
}

.gptalk-support-message.is-user .gptalk-support-meta {
  text-align: right;
}

.gptalk-support-form {
  display: grid;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid #e5ebf5;
  background: #ffffff;
}

.gptalk-support-status {
  min-height: 16px;
  color: #64748b;
  font-size: 12px;
}

.gptalk-support-input-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 68px;
  gap: 8px;
}

.gptalk-support-input {
  min-height: 42px;
  max-height: 110px;
  resize: vertical;
  border: 1px solid #ccd8e8;
  border-radius: 12px;
  padding: 10px 12px;
  color: #111827;
  font-size: 14px;
  outline: none;
}

.gptalk-support-input:focus {
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.gptalk-support-send {
  border: 0;
  border-radius: 12px;
  background: #0f172a;
  color: #ffffff;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
}

.gptalk-support-send:disabled {
  cursor: default;
  opacity: 0.45;
}

@media (max-width: 640px) {
  .gptalk-support-root {
    right: 14px;
    bottom: 14px;
  }

  .gptalk-support-panel {
    right: -2px;
    bottom: 68px;
    height: min(540px, calc(100vh - 96px));
  }
}