.mailbox-wrap {
  max-width: 680px;
  margin: 32px auto;
}

.mailbox-wrap [hidden] {
  display: none;
}

#mailbox-status {
  margin-bottom: 16px;
  line-height: 1.7;
}

.mailbox-heading {
  text-align: center;
  margin-bottom: 28px;
}

.mailbox-heading h1 {
  font-size: 1.6rem;
  margin-bottom: 12px;
}

.mailbox-heading p,
.mailbox-hint,
.mailbox-date {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.7;
}

.mailbox-card {
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow-wrap: anywhere;
}

.mailbox-card h2 {
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.mailbox-card fieldset {
  border: 0;
  min-width: 0;
}

.mailbox-card label {
  display: block;
  margin: 12px 0 6px;
}

.mailbox-card select,
.mailbox-card input {
  width: 100%;
  min-width: 0;
  padding: 10px;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
}

.mailbox-card .btn,
.mailbox-card [role="status"] {
  margin-top: 12px;
}

.mailbox-photo {
  display: block;
  width: 100%;
  max-height: 520px;
  object-fit: contain;
  margin-top: 14px;
  border-radius: 8px;
}

.mailbox-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 14px;
}

.mailbox-toolbar .btn {
  width: auto;
  flex: 1;
  white-space: nowrap;
}

.mailbox-toolbar [aria-pressed="true"] {
  color: #fff;
  background: var(--primary);
}

.mailbox-wrap button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.mailbox-feed {
  display: grid;
  gap: 16px;
  margin: 16px 0;
}

.mailbox-error {
  color: var(--error);
}