/* ===== shell ===== */
.app{display:grid;grid-template-columns:var(--rail) minmax(0,1fr);height:100dvh;overflow:hidden}
.rail{background:var(--wall);border-right:1px solid var(--line);display:flex;flex-direction:column;min-height:0;z-index:30}
.rail-head{display:flex;align-items:center;gap:11px;padding:16px 16px 6px}
.wordmark{font:650 21px/1 var(--ui);letter-spacing:-.025em;color:var(--ink)}
.rail-head .stamp{transform:rotate(-4deg)}
.compose-btn{margin:10px 14px 6px;height:46px;border-radius:12px;font-size:16px;font-weight:600;gap:10px;box-shadow:0 1px 0 rgba(255,255,255,.2) inset,0 6px 14px -6px color-mix(in srgb,var(--blue) 70%,transparent)}
.rail-scroll{flex:1;overflow:auto;padding:4px 8px 12px;min-height:0}
.rail h4{font-size:13px;color:var(--ink-3);font-weight:600;padding:16px 10px 6px;display:flex;align-items:center;gap:6px}
.rail h4 .icon-btn{width:24px;height:24px;margin-left:auto}
.nav{display:flex;align-items:center;gap:10px;width:100%;height:36px;padding:0 10px;border-radius:8px;color:var(--ink-2);font-weight:520;text-align:left;text-decoration:none;position:relative}
.nav:hover{background:var(--wall-2);color:var(--ink)}
.nav.active{background:var(--surface);color:var(--ink);font-weight:620;box-shadow:0 1px 2px rgba(16,24,40,.1)}
.nav.active>svg:first-child{color:var(--blue)}
.nav .count{margin-left:auto}
.nav .grow{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* each domain is a shelf with its stamp colour; mailboxes sit in it like cubbies */
.shelf{margin:6px 0 10px;border-radius:10px;background:color-mix(in srgb,var(--c) 7%,var(--wall));border:1px solid color-mix(in srgb,var(--c) 18%,var(--line));overflow:hidden}
.shelf-head,.cubby,.nav{text-decoration:none}
.shelf-head{display:flex;align-items:center;gap:8px;width:100%;height:36px;padding:0 6px 0 0;font-weight:640;text-align:left;color:var(--ink);position:relative}
.shelf-head::before{content:"";align-self:stretch;width:5px;background:var(--c);margin-right:6px}
.shelf-head .chev{margin-left:auto;color:var(--ink-3);transition:transform .15s}
.shelf.closed .chev{transform:rotate(-90deg)}
.shelf.closed .cubbies{display:none}
.shelf-head:hover{background:color-mix(in srgb,var(--c) 12%,transparent)}
.shelf-head.active{background:color-mix(in srgb,var(--c) 16%,var(--surface))}
.cubbies{padding:2px 6px 6px;display:flex;flex-direction:column;gap:1px}
.cubby{display:flex;align-items:center;gap:9px;height:36px;padding:0 8px;border-radius:7px;color:var(--ink-2);font-weight:520;text-align:left;width:100%}
.cubby:hover{background:color-mix(in srgb,var(--c) 12%,transparent);color:var(--ink)}
.cubby.active{background:var(--surface);color:var(--ink);font-weight:630;box-shadow:0 1px 2px rgba(16,24,40,.1)}
.cubby .stamp{margin:0 1px}
.cubby .count{margin-left:auto}
.cubby small{margin-left:auto;font-size:12px;color:var(--ink-3);font-weight:520}
.cubby.problem small{color:var(--red)}
.rail-foot{border-top:1px solid var(--line);padding:8px;display:flex;flex-direction:column;gap:2px}
.setup-note{margin:8px;padding:10px 12px;border-radius:10px;background:var(--amber-soft);color:var(--amber);font-size:13.5px;line-height:1.35;text-align:left;font-weight:520}
.setup-note b{display:block;font-weight:650;margin-bottom:2px}
.rail-user{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:8px;color:var(--ink-2);width:100%;text-align:left}
.rail-user:hover{background:var(--wall-2)}
.live{width:8px;height:8px;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 25%,transparent);flex:none}
.live.off{background:var(--ink-3);box-shadow:none}

.main{min-width:0;min-height:0;position:relative;display:flex;flex-direction:column}
.view{flex:1;min-height:0;display:flex}
.scrim-rail{display:none}
.mobile-bar{display:none}

/* ===== mail: list + reader ===== */
.mailview{display:grid;grid-template-columns:var(--list) minmax(0,1fr);width:100%;min-height:0}
.listpane{display:flex;flex-direction:column;min-height:0;background:var(--surface);border-right:1px solid var(--line);min-width:0}
.list-head{padding:14px 14px 8px;display:flex;flex-direction:column;gap:10px;border-bottom:1px solid var(--line-2)}
.list-title{display:flex;align-items:center;gap:8px}
.list-title h2{font-size:20px;letter-spacing:-.02em}
.list-title .sub{color:var(--ink-3);font-size:14px;font-weight:520}
.search{position:relative}
.search svg{position:absolute;left:11px;top:10px;color:var(--ink-3);pointer-events:none}
.search input{height:38px;width:100%;padding:0 34px 0 36px;border-radius:99px;border:1px solid var(--line);background:var(--paper);transition:border-color .12s,box-shadow .12s}
.search input:focus{outline:none;border-color:var(--blue);background:var(--surface);box-shadow:0 0 0 3px color-mix(in srgb,var(--blue) 20%,transparent)}
.search .clear{position:absolute;right:4px;top:3px;width:30px;height:30px}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{height:28px;padding:0 11px;border-radius:99px;border:1px solid var(--line);background:var(--surface);font-size:13.5px;font-weight:540;color:var(--ink-2)}
.chip:hover{background:var(--hover)}
.chip.on{background:var(--ink);border-color:var(--ink);color:var(--surface)}
.bulkbar{display:flex;align-items:center;gap:2px;padding:6px 8px;background:var(--blue-soft);border-bottom:1px solid var(--line-2);min-height:46px}
.bulkbar .n{font-weight:640;margin:0 8px;color:var(--blue)}
.listtools{display:flex;align-items:center;gap:4px;padding:2px 8px 2px 14px;min-height:38px;color:var(--ink-3);font-size:13.5px}
.msgs{flex:1;overflow:auto;min-height:0;position:relative}
.group{position:sticky;top:0;z-index:2;padding:7px 16px 5px;font-size:13px;font-weight:620;color:var(--ink-3);background:color-mix(in srgb,var(--surface) 92%,transparent);backdrop-filter:blur(6px)}
.msg{position:relative;display:grid;grid-template-columns:34px minmax(0,1fr) auto;gap:2px 12px;padding:var(--row-pad) 14px var(--row-pad) 16px;border-bottom:1px solid var(--line-2);cursor:pointer;content-visibility:auto;contain-intrinsic-size:auto 78px}
.msg:hover{background:var(--hover)}
.msg.selected{background:var(--sel)}
.msg.active{background:var(--sel);box-shadow:inset 3px 0 0 var(--blue)}
.msg.focus{outline:2px solid color-mix(in srgb,var(--blue) 60%,transparent);outline-offset:-2px}
.msg.unread::before{content:"";position:absolute;left:5px;top:50%;width:7px;height:7px;margin-top:-3.5px;border-radius:50%;background:var(--blue)}
.msg .lead{grid-row:1/4;display:grid;place-items:start center;padding-top:2px;position:relative}
.msg .lead .check{position:absolute;inset:0;display:none;place-items:center;background:var(--surface);border-radius:6px}
.msg:hover .lead .check,.msg.selecting .lead .check,.msg.selected .lead .check{display:grid}
.msg:hover .lead .check,.msg.selecting .lead .check{background:var(--hover)}
.msg.selected .lead .check{background:var(--sel)}
.msg .top{display:flex;align-items:baseline;gap:8px;min-width:0}
.msg .who{font-weight:520;color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.msg.unread .who{font-weight:680}
.msg .when{font-size:12.5px;color:var(--ink-3);white-space:nowrap;font-variant-numeric:tabular-nums}
.msg.unread .when{color:var(--blue);font-weight:620}
.msg .subj{color:var(--ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;grid-column:2/4}
.msg.unread .subj{font-weight:600}
.msg .snip{color:var(--ink-3);font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;grid-column:2/4}
.msg .meta{display:flex;align-items:center;gap:6px;color:var(--ink-3)}
.msg .meta .star{color:var(--ink-3);opacity:0;width:24px;height:24px}
.msg:hover .meta .star,.msg .meta .star.on{opacity:1}
.msg .meta .star.on{color:#e0a100}
.msg .meta .star.on svg{fill:currentColor}
.msg .to-mailbox{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--ink-2);font-weight:560;margin-right:6px;vertical-align:baseline}
.msg .to-mailbox .dot{width:7px;height:7px}
.msg .hover-actions{position:absolute;right:10px;bottom:6px;display:none;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:2px}
.msg:hover .hover-actions{display:flex}
.msg .hover-actions .icon-btn{width:30px;height:28px}
:root[data-density="compact"] .msg .snip{display:none}
.more-row{padding:14px;display:grid;place-items:center}
.list-error{margin:10px 12px;padding:10px 12px;border-radius:8px;background:var(--amber-soft);color:var(--amber);font-size:13.5px;display:flex;gap:10px;align-items:flex-start}
.list-error button{font-weight:650;text-decoration:underline;color:inherit}

/* reader */
.readerpane{min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--paper)}
.reader{display:flex;flex-direction:column;min-height:0;height:100%}
.r-tools{display:flex;align-items:center;gap:2px;padding:8px 12px;background:var(--surface);border-bottom:1px solid var(--line);flex-wrap:wrap}
.r-tools .sep{width:1px;height:20px;background:var(--line);margin:0 6px}
.r-scroll{flex:1;overflow:auto;min-height:0;padding:20px 24px 40px}
.letter{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.r-subject{font:560 clamp(24px,2.4vw,32px)/1.18 var(--letter);letter-spacing:-.012em;font-variation-settings:"opsz" 48;overflow-wrap:anywhere}
.r-from{display:flex;gap:12px;align-items:flex-start}
.avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font-weight:650;color:#fff;flex:none;font-size:15px;letter-spacing:.02em}
.r-from .who{font-weight:650;font-size:16px}
.r-from .addr{color:var(--ink-3);font-size:14px}
.r-from .when{margin-left:auto;color:var(--ink-3);font-size:13.5px;text-align:right;white-space:nowrap}
.r-line{display:flex;align-items:center;gap:8px;color:var(--ink-2);font-size:14px;flex-wrap:wrap}
.r-line button.link{color:var(--ink-3);text-decoration:underline;text-underline-offset:3px}
.details{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:10px;font-size:14px}
.details dt{color:var(--ink-3)} .details dd{margin:0;overflow-wrap:anywhere}
.received{display:inline-flex;align-items:center;gap:8px;padding:3px 10px 3px 4px;border-radius:99px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2);font-size:13.5px;width:fit-content}
.banner{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;background:var(--amber-soft);color:var(--amber);font-size:14px;flex-wrap:wrap}
.banner.info{background:var(--blue-soft);color:var(--blue)}
.banner.bad{background:var(--red-soft);color:var(--red)}
.banner .btn{height:28px;font-size:13px;background:var(--surface);color:var(--ink)}
.atts{display:flex;gap:8px;flex-wrap:wrap}
.att{display:flex;align-items:center;gap:10px;padding:8px 12px 8px 8px;border:1px solid var(--line);background:var(--surface);border-radius:10px;max-width:280px;text-align:left}
.att:hover{border-color:var(--ink-3)}
.att .ft{width:36px;height:36px;border-radius:7px;background:var(--hover);display:grid;place-items:center;color:var(--ink-2);overflow:hidden;flex:none}
.att .ft img{width:100%;height:100%;object-fit:cover}
.att .nm{font-weight:560;font-size:14px}
.att .sz{font-size:12.5px;color:var(--ink-3)}
.paper{background:#fff;border-radius:12px;box-shadow:var(--shadow);border:1px solid var(--line);overflow:hidden}
.paper iframe{display:block;width:100%;border:0;min-height:120px;background:#fff;color-scheme:light}
.r-actions{display:flex;gap:8px;flex-wrap:wrap}
.r-empty{display:grid;place-items:center;align-content:center;height:100%;text-align:center;color:var(--ink-3);gap:12px;padding:24px}
.r-empty .stamps{display:flex;gap:-10px}
.r-empty .stamps .stamp{margin-left:-8px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.18))}
.r-empty .stamps .stamp:nth-child(odd){transform:rotate(-6deg)}
.r-empty .stamps .stamp:nth-child(even){transform:rotate(5deg) translateY(4px)}
.r-empty h3{color:var(--ink);font:560 22px var(--letter)}

/* generic page (admin, settings, contacts, outbox) */
.page{flex:1;overflow:auto;min-width:0}
.page-in{max-width:1040px;margin:0 auto;padding:28px 28px 64px;display:flex;flex-direction:column;gap:22px}
.page-head{display:flex;align-items:flex-start;gap:14px;flex-wrap:wrap}
.page-head h1{font-size:28px;letter-spacing:-.025em}
.page-head p{color:var(--ink-2);margin-top:2px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:12px}
.card.pad{padding:18px}
.card>header{padding:14px 18px;border-bottom:1px solid var(--line-2);display:flex;align-items:center;gap:10px}
.card>header h3{font-size:16.5px}
.card .body{padding:18px}
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--line);overflow:auto;scrollbar-width:none}
.tab{padding:10px 14px;font-weight:560;color:var(--ink-2);border-bottom:2px solid transparent;margin-bottom:-1px;white-space:nowrap}
.tab:hover{color:var(--ink)}
.tab.on{color:var(--ink);border-bottom-color:var(--blue)}

/* ===== responsive ===== */
@media (max-width:1240px){:root{--list:360px}}
@media (max-width:1040px){
  .app{grid-template-columns:minmax(0,1fr)}
  .rail{position:fixed;inset:0 auto 0 0;width:min(320px,88vw);transform:translateX(-102%);transition:transform .2s ease;box-shadow:var(--shadow-lg)}
  .app.rail-open .rail{transform:none}
  .scrim-rail{position:fixed;inset:0;z-index:25;background:rgba(10,15,28,.4)}
  .app.rail-open .scrim-rail{display:block}
  .mobile-bar{display:flex;align-items:center;gap:6px;height:52px;padding:0 8px;background:var(--surface);border-bottom:1px solid var(--line);flex:none}
  .mobile-bar .wordmark{font-size:18px}
  .mailview{grid-template-columns:minmax(0,1fr)}
  .mailview .readerpane{display:none}
  .mailview.reading .listpane{display:none}
  .mailview.reading .readerpane{display:flex}
  .listpane{border-right:0}
  .page-in{padding:20px 16px 56px}
}
@media (max-width:560px){
  .r-scroll{padding:14px 12px 32px}
  .r-from{flex-wrap:wrap}.r-from .when{margin-left:54px;text-align:left;width:100%}
  .msg{grid-template-columns:34px minmax(0,1fr) auto}
  .msg .hover-actions{display:none!important}
}