:root {
  color-scheme: light;
  font-family: Inter, "Microsoft YaHei", Arial, sans-serif;
  background: #f5f7fb;
  color: #182033;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.shell {
  width: min(980px, calc(100vw - 32px));
  margin: 36px auto;
}

.hero {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #0a8f55;
  font-size: 13px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: 32px;
  line-height: 1.2;
}

.hint {
  margin: 10px 0 0;
  color: #667085;
}

.panel,
.saved-panel,
.status,
.mailbox {
  background: #fff;
  border: 1px solid #e3e8ef;
  border-radius: 8px;
  box-shadow: 0 10px 28px rgba(16, 24, 40, 0.06);
}

.panel {
  padding: 20px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 700;
}

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

input {
  width: 100%;
  height: 44px;
  border: 1px solid #cfd8e3;
  border-radius: 6px;
  padding: 0 12px;
  font-size: 15px;
}

button {
  height: 44px;
  border: 0;
  border-radius: 6px;
  padding: 0 18px;
  background: #0a8f55;
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
}

button:disabled {
  opacity: 0.58;
  cursor: not-allowed;
}

.icon-btn {
  background: #182033;
}

.muted {
  margin: 10px 0 0;
  color: #667085;
  font-size: 13px;
}

.saved-panel {
  margin-top: 14px;
  overflow: hidden;
}

.compact {
  padding: 12px 14px;
}

.text-btn {
  width: auto;
  height: 32px;
  margin: 0;
  padding: 0 10px;
  background: transparent;
  color: #667085;
  border: 1px solid #d0d5dd;
}

.saved-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 50px;
  padding: 12px 14px;
}

.saved-item {
  height: 34px;
  max-width: 100%;
  border: 1px solid #d0d5dd;
  border-radius: 6px;
  background: #fff;
  color: #344054;
  padding: 0 10px;
  font-size: 13px;
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.saved-item.active {
  border-color: #0a8f55;
  background: #e9f8f1;
  color: #067647;
}

.saved-empty {
  color: #667085;
  font-size: 13px;
  padding: 8px 0;
}

.status {
  margin-top: 14px;
  padding: 12px 14px;
  color: #475467;
}

.status.ok {
  color: #067647;
  border-color: #9ddbbf;
}

.status.error {
  color: #b42318;
  border-color: #fda29b;
}

.mailbox {
  margin-top: 16px;
  overflow: hidden;
}

.mailbox-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid #e3e8ef;
}

h2 {
  margin: 0;
  font-size: 18px;
}

#currentEmail {
  color: #667085;
  font-size: 13px;
  word-break: break-all;
}

.mail-list {
  min-height: 220px;
}

.empty {
  padding: 48px 18px;
  text-align: center;
  color: #667085;
}

.mail-item {
  padding: 16px 18px;
  border-bottom: 1px solid #edf1f5;
}

.mail-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  font-weight: 700;
}

.mail-meta {
  color: #667085;
  font-size: 13px;
  margin-bottom: 10px;
}

.code {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 10px;
  border-radius: 6px;
  background: #e9f8f1;
  color: #067647;
  font-weight: 800;
  letter-spacing: 0;
}

.body {
  margin-top: 10px;
  white-space: pre-wrap;
  color: #344054;
  font-size: 14px;
  line-height: 1.55;
  word-break: break-word;
}

@media (max-width: 640px) {
  .hero,
  .row,
  .mailbox-head,
  .mail-title {
    display: block;
  }

  button {
    width: 100%;
    margin-top: 10px;
  }

  .text-btn,
  .saved-item {
    width: auto;
    margin-top: 0;
  }
}