:root{
  --navy:#17335f; --navy-2:#0f2447; --teal:#1f7a8c; --green:#2b8a76; --gold:#c9a24a; --red:#b42318;
  --ink:#1d2738; --muted:#5b6678; --line:#e3e8ef; --bg:#f4f7fa; --card:#fff;
  --radius:14px; --shadow:0 6px 20px rgba(23,51,95,.06);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Sarabun",system-ui,sans-serif;font-size:16px;line-height:1.6;color:var(--ink);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}
h1,h2,h3{font-family:"Prompt","Sarabun",sans-serif;color:var(--navy);line-height:1.3;margin:0 0 .6em}
h1{font-size:1.6rem}h2{font-size:1.15rem}h3{font-size:1rem}
a{color:var(--teal)}
code{font-size:.85em;background:var(--bg);padding:1px 6px;border-radius:5px}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px;width:100%}
.main{padding:28px 20px 40px;flex:1}
.muted{color:var(--muted)}.small{font-size:.88rem}.center{text-align:center}.nowrap{white-space:nowrap}.pad{padding:20px 22px 0}

/* header */
.top{background:#fff;border-bottom:1px solid var(--line)}
.top-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:66px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;min-width:0}
.brand img{height:42px;flex:none}
.brand b{display:block;font-family:"Prompt";color:var(--navy);font-weight:600;line-height:1.2}
.brand small{display:block;color:var(--muted);font-size:.8rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.top-right{display:flex;align-items:center;gap:14px;flex:none}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden}
.lang a{padding:4px 10px;font:600 .8rem "Prompt";text-decoration:none;color:var(--muted)}
.lang a.on{background:var(--navy);color:#fff}
.usermenu{position:relative}
.usermenu summary{cursor:pointer;list-style:none;font-weight:600;color:var(--navy);padding:6px 10px;border-radius:8px}
.usermenu summary::-webkit-details-marker{display:none}
.usermenu summary:hover{background:var(--bg)}
.usermenu>div{position:absolute;right:0;top:calc(100% + 6px);background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:8px;min-width:200px;z-index:20;display:grid}
.usermenu small{color:var(--muted);padding:4px 10px}
.usermenu a,.usermenu button{display:block;text-align:left;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--ink);background:none;border:0;font:inherit;cursor:pointer;width:100%}
.usermenu a:hover,.usermenu button:hover{background:var(--bg)}
.tabs{display:flex;gap:4px;overflow-x:auto}
.tabs a{padding:10px 14px;text-decoration:none;color:var(--muted);font:500 .95rem "Prompt";border-bottom:3px solid transparent;white-space:nowrap}
.tabs a.on{color:var(--navy);border-bottom-color:var(--gold)}
.foot{color:var(--muted);font-size:.82rem;padding:18px 20px 26px;text-align:center}

/* cards & layout */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-bottom:20px}
.card.flush{padding:0;overflow:hidden}
.card.narrow{max-width:480px;margin:20px auto}
.card.success{border-color:#b7e2d0;background:#f3fbf7}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.grid2>*{min-width:0}
.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.page-head.tight{margin-bottom:8px;align-items:center}
.page-head p{margin:0}
.btns{display:flex;gap:8px;flex-wrap:wrap}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:20px}
.stat{background:linear-gradient(135deg,var(--navy),var(--teal));color:#fff;border-radius:var(--radius);padding:18px 22px;text-decoration:none}
.stat b{display:block;font:600 2rem "Prompt";line-height:1.1}
.stat span{opacity:.9}
.usage{background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 16px;font-weight:600;color:var(--navy);min-width:220px}
.usage.full{border-color:#f3c6c2;color:var(--red)}
.usage progress{display:block;width:100%;height:8px;margin-top:6px;accent-color:var(--teal)}

/* forms */
.form{display:grid;gap:14px}
label{display:grid;gap:4px;font-weight:600;color:var(--navy);font-size:.92rem}
label small{font-weight:400;color:var(--muted);font-size:.82rem}
label.check{display:flex;align-items:center;gap:8px;font-weight:500}
label.check input{width:18px;height:18px;accent-color:var(--teal)}
input,select,textarea{font:inherit;font-weight:400;color:var(--ink);padding:10px 12px;border:1px solid #cfd8e3;border-radius:10px;background:#fff;width:100%;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid var(--teal);outline-offset:0;border-color:transparent}
input[readonly]{background:var(--bg);color:var(--muted)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.addr{display:flex;align-items:stretch}
.addr input{border-radius:10px 0 0 10px}
.addr span{display:flex;align-items:center;padding:0 12px;background:var(--bg);border:1px solid #cfd8e3;border-left:0;border-radius:0 10px 10px 0;font-weight:500;color:var(--muted);white-space:nowrap;max-width:55%;overflow:hidden;text-overflow:ellipsis}
.pw{display:flex;gap:6px}
.pw input{flex:1}
.pw button{flex:none;border:1px solid #cfd8e3;background:var(--bg);border-radius:10px;padding:0 10px;font:500 .82rem "Prompt";color:var(--navy);cursor:pointer}
.inline{display:flex;gap:8px;flex-wrap:wrap}
.inline input{flex:1;min-width:160px}
.search{margin-bottom:16px;max-width:520px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 18px;border-radius:999px;border:1px solid #cfd8e3;background:#fff;color:var(--navy);font:500 .95rem "Prompt";text-decoration:none;cursor:pointer;white-space:nowrap}
.btn:hover{border-color:var(--teal)}
.btn.primary{background:var(--navy);border-color:var(--navy);color:#fff}
.btn.primary:hover{background:var(--navy-2)}
.btn.danger{color:var(--red);border-color:#f3c6c2}
.btn.danger:hover{background:#fdecec}
.btn.small{padding:5px 12px;font-size:.85rem}
.btn.block{width:100%;padding:12px}
.btn[disabled]{opacity:.6;cursor:wait}

/* alerts & badges */
.alert{border-radius:10px;padding:12px 16px;margin-bottom:16px;border:1px solid}
.alert.ok{background:#e9f7f0;border-color:#b7e2d0;color:#185c41}
.alert.err{background:#fdecec;border-color:#f3c6c2;color:#8a1c12}
.alert.info{background:#eef5fb;border-color:#c9dcef;color:#1d4a73}
.alert.secret{background:#fff8e6;border-color:#f0d58a;color:#6b4e00;font-weight:600;word-break:break-all}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.78rem;font-weight:600;background:var(--bg);color:var(--muted);vertical-align:middle}
.badge.ok{background:#e9f7f0;color:#185c41}.badge.off{background:#fdecec;color:#8a1c12}.badge.warn{background:#fff3d6;color:#7a5800}
code.act.bad{background:#fdecec;color:#8a1c12}

/* tables & lists */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.93rem}
th{text-align:left;font:600 .8rem "Prompt";color:var(--muted);text-transform:uppercase;letter-spacing:.03em;padding:12px 14px;border-bottom:1px solid var(--line);background:#fafbfd}
td{padding:11px 14px;border-bottom:1px solid var(--line);vertical-align:top}
tr:last-child td{border-bottom:0}
.card:not(.flush) th{background:none;padding-left:0}
.card:not(.flush) td{padding-left:0}
.mblist{list-style:none;margin:0 0 12px;padding:0;display:grid;gap:2px}
.mblist li{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline;padding:9px 0;border-bottom:1px solid var(--line)}
.mblist li b{word-break:break-all}
.mblist span{color:var(--muted);font-size:.9rem}
.mblist small{margin-left:auto;color:var(--muted)}
.settings{background:var(--bg);border-radius:12px;padding:14px 16px;margin-top:12px}
.settings h3{margin-bottom:6px}
.settings p{margin:4px 0}
table.mini{font-size:.85rem}
table.mini th,table.mini td{padding:5px 8px 5px 0;background:none;border-bottom:1px solid var(--line)}

@media (max-width:860px){
  .grid2,.stats{grid-template-columns:1fr}
  .brand small{display:none}
}
@media (max-width:520px){
  .row2{grid-template-columns:1fr}
  .main{padding:20px 16px 32px}
  .wrap{padding:0 16px}
  .card{padding:18px}
  .card.narrow{margin:8px auto}
  .brand b{font-size:.9rem}
}

/* header fits on small phones */
.brand>span{min-width:0}
.brand b{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.usermenu summary{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
@media (max-width:420px){
  .top-row{gap:8px}
  .brand img{height:34px}
  .brand b{font-size:.85rem}
  .top-right{gap:8px}
  .usermenu summary{max-width:96px;padding:6px 4px;font-size:.88rem}
  .lang a{padding:3px 7px}
}

/* open-mailbox buttons */
.mblist li .btn{margin-left:8px}
.mblist li small{margin-left:auto}
.row-actions{display:flex;gap:6px;justify-content:flex-end;flex-wrap:wrap}
.row-actions form{margin:0}

/* ===== v4: page layout ===== */
.crumb{margin:0 0 6px}
.crumb a{text-decoration:none;font-size:.9rem}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 0}
.chip{display:inline-flex;align-items:center;gap:4px;background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:.85rem;color:var(--muted)}
.head-right{display:flex;flex-direction:column;align-items:flex-end;gap:10px}
.layout-main{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(300px,1fr);gap:20px;align-items:start}
.layout-main>aside{display:grid;gap:0}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap}
.card-head h2{margin:0}
.count{display:inline-grid;place-items:center;min-width:26px;height:22px;padding:0 7px;border-radius:999px;background:var(--bg);color:var(--muted);font:600 .78rem "Prompt";vertical-align:middle;margin-left:4px}
.card.accent{border-top:4px solid var(--gold)}

/* usage meter */
.usage{display:grid;grid-template-columns:auto 1fr;align-items:center;gap:2px 12px;min-width:230px;padding:10px 16px}
.usage-num{grid-row:span 2;display:flex;align-items:baseline;gap:3px}
.usage-num b{font:600 1.8rem "Prompt";color:var(--navy);line-height:1}
.usage-num span{color:var(--muted);font-weight:600}
.usage-label{font-size:.85rem;font-weight:500;color:var(--muted)}
.usage progress{margin-top:0}
.usage.full .usage-num b{color:var(--red)}

/* mailbox rows */
.mbrows{list-style:none;margin:0;padding:0}
.mbrow{display:flex;align-items:center;gap:14px;padding:12px 4px;border-bottom:1px solid var(--line)}
.mbrow:last-child{border-bottom:0}
.mbrow:hover{background:#fafbfd}
.avatar{flex:none;width:40px;height:40px;border-radius:50%;display:grid;place-items:center;background:linear-gradient(135deg,var(--navy),var(--teal));color:#fff;font:600 1rem "Prompt"}
.avatar.sm{width:32px;height:32px;font-size:.85rem}
.mbinfo{flex:1;min-width:0}
.mbaddr{display:flex;align-items:center;gap:2px;min-width:0}
.mbaddr b{color:var(--ink);font-size:1rem}
.mbaddr .muted{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.copy{border:0;background:none;color:var(--muted);cursor:pointer;font-size:1rem;padding:2px 6px;border-radius:6px;flex:none}
.copy:hover{background:var(--bg);color:var(--teal)}
.copy.done{color:var(--green)}
.mbmeta{display:flex;flex-wrap:wrap;gap:2px 14px;font-size:.82rem;color:var(--muted);margin-top:2px}
.mbactions{display:flex;gap:6px;flex:none}
.mbactions form{margin:0}
.mb-filter{margin-bottom:8px}
.empty{text-align:center;padding:28px 10px}
.empty-icon{font-size:2.2rem;opacity:.6}
.howto{margin-top:14px;border-top:1px solid var(--line);padding-top:10px}
.howto summary{cursor:pointer;font:500 .92rem "Prompt";color:var(--teal)}
.howto .settings{margin-top:10px}

/* users of a company */
.userlist{list-style:none;margin:0;padding:0}
.userlist li{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line)}
.userlist li:last-child{border-bottom:0}
.userlist li div{flex:1;min-width:0}
.userlist small{display:block;color:var(--muted)}
.userlist a{text-decoration:none}

@media (max-width:960px){
  .layout-main{grid-template-columns:1fr}
  .head-right{align-items:stretch;width:100%}
}
@media (max-width:520px){
  .mbrow{flex-wrap:wrap;gap:10px}
  .mbactions{width:100%;padding-left:54px}
  .mbactions .btn{flex:1}
  .avatar{width:36px;height:36px}
}

/* link back to the main website */
.mainsite{font:500 .85rem "Prompt";color:var(--muted);text-decoration:none;padding:5px 10px;border-radius:999px;white-space:nowrap}
.mainsite:hover{background:var(--bg);color:var(--teal)}
.foot a{color:inherit;text-decoration:none}
.foot a:hover{color:var(--teal);text-decoration:underline}
@media (max-width:620px){.mainsite span{display:none}.mainsite{padding:5px 6px;font-size:1rem}}
@media (max-width:520px){
  .tabs{gap:0;padding:0 8px}
  .tabs a{padding:10px 8px;font-size:.84rem}
}
.small,.muted{overflow-wrap:anywhere}

/* live preview of the new address (long domains wrap instead of being cut) */
.addr-preview{display:block;background:var(--bg);border:1px dashed #cfd8e3;border-radius:10px;padding:8px 12px;font-weight:500;color:var(--navy);overflow-wrap:anywhere;line-height:1.5}
.addr-preview b{color:var(--teal)}
.addr-preview b.ph:empty::before{content:"…"}
.addr-preview span{color:var(--muted)}
.mbaddr{flex-wrap:wrap}
.mbaddr .muted{white-space:normal;overflow-wrap:anywhere}