:root {
  color-scheme: light;
  --paper: #e7eeea;
  --panel: #f7faf8;
  --ink: #17211c;
  --muted: #5c6b63;
  --line: #d3ddd6;
  --green: #0c6a4c;
  --green-ink: #084833;
  --wash: #e4f3ec;
  --danger: #8e2e2e;
  --shadow: 0 18px 50px rgba(23, 33, 28, 0.08);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--paper);
  color: var(--ink);
}
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }
.hidden { display: none !important; }

.mark {
  font-family: "Iowan Old Style", Palatino, Georgia, serif;
  font-size: 1.45rem;
  letter-spacing: -0.03em;
  margin: 0;
}
.mono { font-family: ui-monospace, "SFMono-Regular", Menlo, monospace; font-size: 0.86rem; }

.login {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login form {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 28px;
  box-shadow: var(--shadow);
}
.lede { color: var(--muted); margin: 6px 0 22px; }
label { display: grid; gap: 6px; font-size: 0.86rem; color: var(--muted); }
input, button.primary, button.secondary {
  border: 1px solid var(--line);
  background: white;
  border-radius: 0;
  padding: 10px 12px;
}
input:focus, button:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
button.primary {
  background: var(--green);
  color: white;
  border-color: var(--green-ink);
  margin-top: 16px;
}
.error { color: var(--danger); min-height: 1.2em; }

.app { height: 100%; display: grid; grid-template-rows: auto 1fr; }
header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
header input[type="search"] { flex: 1; max-width: 420px; }

.panes {
  min-height: 0;
  display: grid;
  grid-template-columns: 280px minmax(260px, 340px) 1fr;
}
aside, #list-pane, #message-pane {
  min-height: 0;
  overflow: auto;
  background: var(--panel);
}
aside, #list-pane { border-right: 1px solid var(--line); }
.pane-label, .pane-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 14px 8px;
}
.pane-label {
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
#inbox-list, #message-list { list-style: none; margin: 0; padding: 0 8px 12px; }
.row, .message-row {
  width: 100%;
  text-align: left;
  border: 0;
  background: transparent;
  padding: 10px;
  display: grid;
  gap: 2px;
}
.row[aria-current="true"], .message-row[aria-current="true"] { background: var(--wash); }
.row .email { font-family: ui-monospace, Menlo, monospace; font-size: 0.78rem; }
.row .name { font-weight: 600; }
.unread-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 6px;
  background: var(--green);
  border-radius: 50%;
}
#new-email, .text-button, .danger {
  border: 0;
  background: transparent;
  padding: 12px 14px;
}
#new-email { color: var(--green-ink); font-weight: 650; }
.danger, .text-danger { color: var(--danger); }
h1 { font-size: 1rem; margin: 0; font-weight: 650; }
.meta, .quiet { color: var(--muted); margin: 0; }
.message-row strong { font-weight: 650; }
.message-row .subject { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.message-row.unread .subject { font-weight: 700; }

#message-pane { padding: 8px 18px 28px; }
.letter-head { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
.letter-head h2 { margin: 0 0 8px; font-size: 1.35rem; letter-spacing: -0.02em; }
dl { display: grid; grid-template-columns: 64px 1fr; gap: 4px 10px; margin: 12px 0; }
dt { color: var(--muted); }
dd { margin: 0; }
.urls { display: flex; flex-direction: column; gap: 6px; margin: 8px 0 16px; }
.urls a { color: var(--green-ink); overflow-wrap: anywhere; }
iframe {
  width: 100%;
  min-height: 420px;
  border: 1px solid var(--line);
  background: white;
}
pre.body {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  margin: 0;
}
.tabs { display: flex; gap: 8px; margin: 8px 0; }
.tabs button[aria-pressed="true"] { background: var(--wash); }
.empty { color: var(--muted); padding: 18px 14px; }

dialog {
  border: 1px solid var(--line);
  padding: 0;
  width: min(440px, calc(100% - 32px));
  box-shadow: var(--shadow);
}
dialog form { display: grid; gap: 12px; padding: 20px; }
.dialog-actions, .local-row { display: flex; gap: 8px; }
.local-row input { flex: 1; }
.suffix { align-self: center; color: var(--muted); }

.only-mobile { display: none; }

@media (max-width: 960px) {
  .only-mobile { display: inline; }
  .panes { grid-template-columns: 1fr; }
  .panes[data-view="inboxes"] #list-pane,
  .panes[data-view="inboxes"] #message-pane,
  .panes[data-view="messages"] aside,
  .panes[data-view="messages"] #message-pane,
  .panes[data-view="letter"] aside,
  .panes[data-view="letter"] #list-pane { display: none; }
  header { align-items: stretch; flex-wrap: wrap; }
}