/* EPerf UI: dark gradient, glass cards, blue accent (same tokens as eperf_ui.php) */
:root{
  --bg0:#0f1216;--bg1:#151a21;--card:#1b2230;--ink:#e9eef7;--muted:#a7b3c7;
  --line:rgba(255,255,255,.08);--line2:rgba(255,255,255,.14);
  --accent:#5aa7ff;--accent-fg:#06121f;--good:#40d39c;--warn:#ffd166;--bad:#ff5c7a;
  --glass:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.02));
  --unread:rgba(90,167,255,.09);--hover:rgba(255,255,255,.04);
  --shadow:0 10px 30px rgba(0,0,0,.35);--radius:16px;
  --mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono",monospace;
  --sans:system-ui,-apple-system,"Segoe UI",Roboto,Ubuntu,Cantarell,"Helvetica Neue",Arial,sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
body{margin:0;font:14px/1.45 var(--sans);color:var(--ink);min-height:100vh;
  background:
    radial-gradient(1200px 600px at 20% 0%,rgba(90,167,255,.18),transparent 60%),
    radial-gradient(900px 500px at 90% 10%,rgba(64,211,156,.12),transparent 55%),
    linear-gradient(180deg,var(--bg0),#0b0e12 70%) fixed;
  background-color:var(--bg0)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
code{font-family:var(--mono);font-size:12px;padding:1px 6px;border-radius:8px;background:rgba(0,0,0,.25);border:1px solid rgba(255,255,255,.06)}

/* top bar */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:16px 18px 0;padding:12px 16px;
  background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);backdrop-filter:blur(6px)}
.brand{display:flex;align-items:center;gap:12px;color:var(--ink)}
.brand:hover{text-decoration:none}
.logo{width:38px;height:38px;border-radius:12px;flex:none;position:relative;
  background:radial-gradient(circle at 30% 25%,rgba(90,167,255,.9),rgba(90,167,255,.25) 45%,rgba(0,0,0,0) 70%),var(--glass);
  border:1px solid rgba(90,167,255,.35);box-shadow:0 10px 25px rgba(0,0,0,.35)}
.logo:after{content:"E";position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-weight:800;color:rgba(233,238,247,.92)}
.brand-name{display:block;font-size:16px;font-weight:700;letter-spacing:.02em;line-height:1.2}
.brand .sub{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* layout */
.layout{display:grid;grid-template-columns:240px 1fr;gap:16px;padding:16px 18px;align-items:start}
.side{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:14px 10px;display:flex;flex-direction:column;gap:8px;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}
.compose-btn{text-align:center;justify-content:center;margin-bottom:6px}
.nav{display:block;padding:7px 10px;border-radius:10px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.nav:hover{background:var(--hover);text-decoration:none}
.nav.active{background:rgba(90,167,255,.16);color:var(--ink);box-shadow:inset 0 0 0 1px rgba(90,167,255,.35)}
.nav.sub{padding-left:24px;font-size:13px;color:var(--muted)}
.nav.sub.active{color:var(--ink)}
.acct-name{font-weight:600;margin-top:6px}
.settings{margin-top:auto;color:var(--muted);border-top:1px solid var(--line);border-radius:0;padding-top:10px}
.main{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);
  padding:16px 20px 20px;min-width:0}
h1{font-size:16px;margin:0;letter-spacing:.02em}
h2{font-size:14px;letter-spacing:.02em}
.footer{display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:12px;padding:0 22px 22px}

/* controls */
.toolbar{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin:-16px -20px 14px;
  padding:14px 20px;border-bottom:1px solid var(--line);background:rgba(0,0,0,.14);border-radius:var(--radius) var(--radius) 0 0}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.inline{display:inline}
.search input{width:300px;max-width:100%}
input,select,textarea{font:inherit;color:var(--ink);background:rgba(0,0,0,.25);border:1px solid var(--line2);border-radius:12px;padding:8px 12px}
input:focus,select:focus,textarea:focus{outline:none;border-color:rgba(90,167,255,.6);box-shadow:0 0 0 3px rgba(90,167,255,.15)}
input[type=checkbox]{accent-color:var(--accent);width:16px;height:16px;padding:0}
input[type=file]{padding:6px;border-style:dashed}
select option{background:var(--bg1)}
button,.btn{font:600 13px/1.2 var(--sans);color:var(--ink);background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.03));
  border:1px solid var(--line);border-radius:14px;padding:9px 12px;cursor:pointer;display:inline-flex;align-items:center;gap:8px;
  transition:transform .06s ease,border-color .12s ease,background .12s ease}
button:hover,.btn:hover{transform:translateY(-1px);border-color:rgba(90,167,255,.35);text-decoration:none}
button:active,.btn:active{transform:none}
button:disabled{opacity:.6;cursor:default;transform:none}
.primary{background:linear-gradient(180deg,#6fb3ff,#4a96f0);color:var(--accent-fg);border-color:rgba(90,167,255,.8)}
.primary:hover{border-color:#9ccaff;filter:brightness(1.06)}
.danger{color:var(--bad)}
button.danger:hover{border-color:rgba(255,92,122,.45)}
.bulkbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:10px}
.chk{display:flex;gap:8px;align-items:center}

/* message list */
.list{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:rgba(0,0,0,.12)}
.row{display:flex;align-items:center;gap:10px;padding:0 12px;border-bottom:1px solid var(--line)}
.row:last-child{border-bottom:0}
.row:hover{background:var(--hover)}
.row.unread{background:var(--unread);font-weight:650}
.row.unread .from:before{content:"";display:inline-block;width:7px;height:7px;border-radius:9px;background:var(--accent);margin-right:7px;vertical-align:middle}
.rowlink{display:grid;grid-template-columns:200px 1fr 80px;gap:12px;flex:1;padding:10px 0;color:inherit;min-width:0}
.rowlink:hover{text-decoration:none}
.rowlink>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.date{text-align:right;color:var(--muted);font-weight:400;font-size:13px}
.tag{font-size:11px;border:1px solid var(--line2);border-radius:999px;padding:1px 8px;margin-right:6px;color:var(--muted);font-weight:700}
.star{color:var(--warn);margin-right:4px}
.empty{padding:34px;text-align:center;color:var(--muted)}
.pager{display:flex;gap:12px;align-items:center;justify-content:center;margin:16px 0 0;color:var(--muted)}

/* notices */
.flash{padding:10px 14px;border-radius:12px;margin-bottom:12px;border:1px solid var(--line);background:rgba(255,255,255,.03)}
.flash.error{border-color:rgba(255,92,122,.45);color:#ffb3c1;background:rgba(255,92,122,.08)}
.flash.ok{border-color:rgba(64,211,156,.45);color:#9eecc9;background:rgba(64,211,156,.08)}
.notice{background:rgba(255,209,102,.07);border:1px solid rgba(255,209,102,.3);padding:9px 14px;border-radius:12px;margin:10px 0;font-size:13px}
.muted{color:var(--muted);font-size:13px}

/* reading */
.msg h2{margin:4px 0 12px;font-size:20px}
.hdr{padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:12px;display:grid;gap:3px}
.attachments{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.chip{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:999px;padding:6px 12px;background:rgba(255,255,255,.03);color:var(--ink);font-size:13px}
.chip:hover{border-color:rgba(90,167,255,.35);text-decoration:none}
.chip small{color:var(--muted)}
/* mail bodies are authored for a light page, so the frame stays white */
.body-frame{width:100%;border:1px solid var(--line);border-radius:12px;min-height:200px;background:#fff}
.plain{white-space:pre-wrap;word-wrap:break-word;font:13px/1.55 var(--mono);margin:0;padding:14px;border-radius:14px;background:rgba(0,0,0,.28);border:1px solid rgba(255,255,255,.06)}

/* forms */
.compose{display:flex;flex-direction:column;gap:10px;max-width:820px}
.compose label{display:grid;grid-template-columns:90px 1fr;gap:10px;align-items:center;color:var(--muted);font-size:12px;font-weight:700}
.compose label.chk{display:flex;font-size:13px;font-weight:400}
.compose textarea{width:100%;resize:vertical;font-family:inherit;line-height:1.5}
.row-actions{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
fieldset{border:1px solid var(--line);border-radius:14px;display:flex;gap:8px;flex-wrap:wrap;padding:10px 12px 12px}
legend{color:var(--muted);font-size:12px;font-weight:700;padding:0 6px}
fieldset input[name$=host]{flex:1;min-width:180px}
.port{width:90px}
.accts{margin-bottom:18px}
.accts .row{padding:10px 12px;gap:14px}
.accts .subj{flex:1;color:var(--muted)}

/* login */
.login-page{display:flex;align-items:center;justify-content:center;padding:16px}
.card{background:var(--glass);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.card .hd{padding:14px 16px;border-bottom:1px solid var(--line);background:rgba(0,0,0,.14)}
.card .bd{padding:16px;display:flex;flex-direction:column;gap:12px}
.login{width:100%;max-width:380px}
.login label{display:flex;flex-direction:column;gap:6px;color:var(--muted);font-size:12px;font-weight:700}
.login .btn{justify-content:center}

@media (max-width:760px){
  .topbar{margin:12px 12px 0}.layout{grid-template-columns:1fr;padding:12px}
  .side{position:static;max-height:none}.main{padding:14px}.toolbar{margin:-14px -14px 12px;padding:12px 14px}
  .rowlink{grid-template-columns:1fr 70px}.rowlink .from{grid-column:1/-1}
  .brand .sub{display:none}
}