:root {
  --bg: #f6f8fc;
  --surface: #ffffff;
  --text: #1f1f1f;
  --muted: #5f6368;
  --line: #e3e6ea;
  --accent: #0b57d0;
  --accent-soft: #d3e3fd;
  --hover: #f2f6fc;
  --danger: #b3261e;
  --notice: #e6f4ea;
  --notice-text: #0d652d;
  --error: #fce8e6;
  --radius: 16px;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.45; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; font-weight: 400; margin: 0; }
h2 { font-size: 18px; font-weight: 500; margin: 0 0 12px; }
code { font-family: ui-monospace, Menlo, Consolas, monospace; }

/* --- кнопки и формы --- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line); background: var(--surface); color: var(--text);
  border-radius: 999px; padding: 7px 16px; font: inherit; cursor: pointer;
}
.btn:hover { background: var(--hover); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: #0842a0; }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-danger { color: var(--danger); }
.form { display: grid; gap: 14px; max-width: 420px; }
.form label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; }
.form input {
  font: inherit; font-size: 15px; color: var(--text); padding: 10px 12px;
  border: 1px solid #c4c7c5; border-radius: 8px; background: #fff;
}
.form input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.form .btn { justify-self: start; }
.hint, .muted { color: var(--muted); font-size: 13px; }
.notice { background: var(--notice); color: var(--notice-text); padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; }
.error { background: var(--error); color: var(--danger); padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; }

/* --- страница входа и восстановления --- */
body.auth { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.auth-card {
  width: 100%; max-width: 440px; background: var(--surface); border-radius: 24px;
  padding: 36px 32px; box-shadow: 0 1px 3px rgba(0,0,0,.08);
}
.auth-brand { font-size: 20px; color: var(--accent); margin-bottom: 18px; }
.auth-card h1 { margin-bottom: 16px; }
.auth-card .form { max-width: none; }
.links { margin-top: 18px; }
.support { margin-top: 24px; color: var(--muted); font-size: 13px; }
.question { font-size: 16px; margin: 0; padding: 12px 14px; background: var(--bg); border-radius: 8px; }
.password-once code {
  display: inline-block; font-size: 22px; letter-spacing: 1px; padding: 10px 14px;
  background: var(--bg); border-radius: 8px; user-select: all;
}

/* --- каркас кабинета --- */
.topbar {
  display: flex; align-items: center; gap: 16px; height: 64px; padding: 0 16px;
  position: sticky; top: 0; background: var(--bg); z-index: 2;
}
.brand { font-size: 22px; color: var(--muted); min-width: 200px; padding-left: 8px; }
.brand:hover { text-decoration: none; }
.search { flex: 1; max-width: 720px; }
.search input {
  width: 100%; font: inherit; font-size: 16px; padding: 12px 20px; border: none;
  border-radius: 999px; background: #e9eef6;
}
.search input:focus { outline: none; background: #fff; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.account { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.account form { margin: 0; }
.account-address { color: var(--muted); margin-right: 8px; }

.layout { display: grid; grid-template-columns: 256px 1fr; gap: 0 16px; padding: 0 16px 16px 0; }
.sidebar { padding: 8px 0; }
.folder {
  display: flex; justify-content: space-between; align-items: center;
  height: 36px; padding: 0 16px 0 26px; border-radius: 0 999px 999px 0; color: var(--text);
}
.folder:hover { background: #e8eaed; text-decoration: none; }
.folder.active { background: var(--accent-soft); font-weight: 600; }
.count { font-size: 12px; font-weight: 600; }
.quota { padding: 18px 16px 0 26px; color: var(--muted); font-size: 12px; }
.quota progress { width: 100%; height: 4px; accent-color: var(--accent); }

.content { background: var(--surface); border-radius: var(--radius); min-height: calc(100vh - 80px); padding: 8px 0 16px; overflow: hidden; }
.content > .notice, .content > .error { margin: 8px 16px; }
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 8px 16px; border-bottom: 1px solid var(--line);
}
.toolbar-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.toolbar-actions form { margin: 0; }
.pager { color: var(--muted); display: inline-flex; align-items: center; gap: 4px; }

/* --- список писем --- */
.mail-list { list-style: none; margin: 0; padding: 0; }
.mail-list li { border-bottom: 1px solid var(--line); }
.mail-list a {
  display: grid; grid-template-columns: 200px 1fr auto; gap: 16px; align-items: center;
  padding: 10px 16px; color: var(--text);
}
.mail-list a:hover { background: var(--hover); box-shadow: inset 0 -1px 0 var(--line); text-decoration: none; }
.mail-list li:not(.unread) a { background: #f8fafd; }
.mail-list .from, .mail-list .line { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mail-list .preview, .mail-list .date { color: var(--muted); }
.mail-list .unread .from, .mail-list .unread .subject, .mail-list .unread .date { font-weight: 700; color: var(--text); }
.mail-list .meta { display: flex; gap: 8px; align-items: center; font-size: 12px; }
.empty { padding: 48px 16px; color: var(--muted); text-align: center; }

/* --- письмо --- */
.message { padding: 8px 16px 16px; }
.message-subject { font-size: 22px; margin: 12px 0 16px; overflow-wrap: anywhere; }
.message-head { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0 0 16px; }
.message-head dt { color: var(--muted); }
.message-head dd { margin: 0; overflow-wrap: anywhere; }
.attachments { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; padding: 0; margin: 0 0 16px; }
.attachments li { border: 1px solid var(--line); border-radius: 8px; padding: 8px 12px; }
.attachments .size { color: var(--muted); font-size: 12px; }
.message-body { display: block; width: 100%; min-height: 200px; height: 480px; border: 0; border-top: 1px solid var(--line); }

/* --- настройки --- */
.panel { padding: 20px 16px; border-bottom: 1px solid var(--line); }
.panel:last-child { border-bottom: none; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.suggest { user-select: all; background: var(--bg); padding: 2px 6px; border-radius: 4px; }

/* --- телефоны --- */
@media (max-width: 760px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 8px 12px; gap: 8px; }
  .brand { min-width: 0; font-size: 18px; }
  .account-address { display: none; }
  .search { order: 3; flex-basis: 100%; max-width: none; }
  .layout { grid-template-columns: 1fr; padding: 0 8px 8px; }
  .sidebar { display: flex; gap: 4px; overflow-x: auto; padding: 0 0 8px; }
  .folder { border-radius: 999px; padding: 0 14px; height: 32px; gap: 8px; flex: none; }
  .quota { display: none; }
  .mail-list a { grid-template-columns: 1fr auto; grid-template-areas: "from meta" "line line"; gap: 2px 8px; }
  .mail-list .from { grid-area: from; }
  .mail-list .meta { grid-area: meta; }
  .mail-list .line { grid-area: line; }
  .auth-card { padding: 28px 20px; }
}