:root{--night:#0E2235;--bg:#F4F6F8;--surface:#fff;--line:#C9D4DC;--muted:#53606B;--accent:#F2994A;--accent-ink:#A3470C;--ok:#1E6B52;color-scheme:light}
@media (prefers-color-scheme:dark){:root{--bg:#0B1A28;--surface:#11263A;--line:#2A4560;--muted:#9DB0BF;--night:#E9EEF2;--accent-ink:#F2A35E;--ok:#6FCF9F;color-scheme:dark}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--night);font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif}
a{color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.top{display:flex;gap:20px;align-items:center;flex-wrap:wrap;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--line)}
.top .brand{font-weight:800;text-decoration:none;color:var(--night)}
.top nav{display:flex;gap:16px;flex-wrap:wrap}
.top nav a{text-decoration:none;color:var(--night);font-weight:600}
.top nav a[aria-current]{color:var(--accent-ink)}
.top form{margin-left:auto}
main{max-width:1000px;margin:0 auto;padding:20px 16px 64px}
h1{font-size:24px;margin:0}h1 small{font-size:14px;color:var(--muted);font-weight:400}
h2{font-size:18px;margin:0 0 10px}
.bar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.acts{display:flex;gap:8px;flex-wrap:wrap}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:20px;margin-bottom:16px}
.card.narrow{max-width:420px;margin:10vh auto}
.btn{display:inline-block;background:var(--night);color:var(--bg);border:0;border-radius:6px;padding:10px 18px;font:inherit;font-weight:700;cursor:pointer;text-decoration:none}
.btn.sm{padding:7px 12px;font-size:14px}.btn.ghost{background:none;color:var(--night);border:1px solid var(--line)}
button.link{background:none;border:0;color:var(--accent-ink);font:inherit;cursor:pointer;text-decoration:underline}
input,textarea{font:inherit;color:inherit;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:8px 10px;width:100%}
textarea{font-family:ui-monospace,Menlo,monospace;font-size:14px}
label{display:block;font-weight:600;margin:12px 0 4px}
.search{display:flex;gap:8px;min-width:min(420px,100%)}
.mails{list-style:none;margin:0;padding:0;background:var(--surface);border:1px solid var(--line);border-radius:10px}
.mails li+li{border-top:1px solid var(--line)}
.mails a{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr) auto;gap:4px 16px;padding:12px 16px;text-decoration:none;color:var(--night)}
.mails .from{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mails .subj{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mails .prev{grid-column:2;color:var(--muted);font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mails time{grid-row:1;grid-column:3;font-size:13px;color:var(--muted);white-space:nowrap}
.mails .att{grid-column:3;font-size:12px;color:var(--muted)}
.mails li.unread .from,.mails li.unread .subj{font-weight:800}
.mails li.unread a{box-shadow:inset 3px 0 0 var(--accent)}
@media (max-width:640px){.mails a{grid-template-columns:minmax(0,1fr) auto}.mails .subj,.mails .prev{grid-column:1/-1}.mails time{grid-column:2}}
.msg{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:12px}
.msg header{display:flex;gap:4px 12px;flex-wrap:wrap;align-items:baseline;margin-bottom:10px}
.msg header time,.msg .to{font-size:13px;color:var(--muted)}.msg .to{flex-basis:100%}
pre.body{white-space:pre-wrap;font:15px/1.55 Georgia,serif;margin:0;overflow-wrap:anywhere}
iframe.body{width:100%;min-height:420px;border:1px solid var(--line);border-radius:6px;background:#fff}
.note,.muted{font-size:14px;color:var(--muted)}
.atts{font-size:14px;margin:10px 0 0;padding-left:18px}
.ok{color:var(--ok);font-weight:600}.err{color:#B23A2E;font-weight:600;min-height:1.2em}
.empty{color:var(--muted)}
.pager{display:flex;gap:16px}
table{border-collapse:collapse;width:100%;font-size:14px}td,th{text-align:left;padding:6px 8px;border-bottom:1px solid var(--line)}