:root{--navy:#1A1A2E;--orange:#E85D26;--orange-d:#C74A18;--bg:#F5F5F8;--card:#fff;--line:#E3E3EA;--muted:#6B6B7B;--ok:#1F7A4D;--err:#B3261E;--unread:#fff}
@media (prefers-color-scheme:dark){:root{--bg:#12121E;--card:#1C1C2D;--line:#2E2E44;--muted:#9A9AB0;--navy:#ECECF3;--unread:#232338;--err:#FF8A80}body.app .topbar{background:#0B0B16}}
*{box-sizing:border-box}
html,body{margin:0}
body{font-family:Arial,Helvetica,sans-serif;font-size:15px;line-height:1.5;color:var(--navy);background:var(--bg)}
a{color:var(--orange-d);text-decoration:none}a:hover{text-decoration:underline}
h1{font-size:22px;margin:0 0 .5rem}h2{font-size:17px;margin:1.2rem 0 .6rem}
.muted{color:var(--muted)}.small{font-size:13px}.err-text{color:var(--err)}.pad{padding:2px 14px}
hr{border:0;border-top:1px solid var(--line);margin:1.5rem 0}
.spacer{flex:1}.inline{display:inline;margin:0}.only-mobile,.only-narrow{display:none!important}

/* top bar */
.topbar{display:flex;align-items:center;gap:12px;padding:0 16px;height:60px;background:#1A1A2E;color:#fff;position:sticky;top:0;z-index:5}
.topbar a{color:#fff}.brand{display:flex;align-items:center;gap:8px;font-weight:700;font-size:18px;letter-spacing:.2px}
.brand.big{justify-content:center;font-size:26px;color:var(--navy);margin-bottom:1rem}
.logo{width:22px;height:22px;border-radius:6px;background:var(--orange);display:inline-block}
.search{flex:1;max-width:520px}.search input{width:100%;padding:8px 12px;border-radius:8px;border:0;background:#2B2B45;color:#fff}
.search input::placeholder{color:#a9a9c4}
.topnav{display:flex;align-items:center;gap:14px;font-size:14px}
button.link{background:none;border:0;color:#fff;cursor:pointer;font:inherit;padding:0}
button.link:hover{text-decoration:underline}
.icon-btn{background:none;border:0;color:#fff;cursor:pointer;padding:6px;border-radius:8px;display:inline-flex}.icon-btn:hover{background:#ffffff1f}

/* buttons and forms */
.btn{display:inline-block;padding:8px 14px;border-radius:8px;border:1px solid var(--line);background:var(--card);color:var(--navy);font:inherit;font-size:14px;cursor:pointer;text-decoration:none}
.btn:hover{border-color:var(--orange);text-decoration:none}
.btn.primary{background:var(--orange);border-color:var(--orange);color:#fff;font-weight:700}.btn.primary:hover{background:var(--orange-d)}
.btn.danger{color:var(--err)}.btn.small{padding:5px 10px;font-size:13px}.btn.wide{width:100%;margin-top:6px}
.btn[disabled]{opacity:.6;cursor:wait}
label{display:block;font-size:13px;font-weight:700;margin-bottom:12px}
label.check{font-weight:400;font-size:14px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=search],select,textarea{width:100%;margin-top:4px;padding:9px 11px;border:1px solid var(--line);border-radius:8px;font:inherit;font-weight:400;background:var(--card);color:var(--navy)}
input[type=color]{display:block;margin-top:4px;height:38px;width:70px;padding:2px;border:1px solid var(--line);border-radius:8px;background:var(--card)}
input:focus,select:focus,textarea:focus{outline:2px solid var(--orange);outline-offset:0}
textarea{resize:vertical;line-height:1.5}
fieldset{border:1px solid var(--line);border-radius:10px;margin:0 0 14px;padding:10px 14px 2px}legend{font-size:13px;font-weight:700;padding:0 6px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:14px}.three{display:grid;grid-template-columns:2fr 1fr 1fr;gap:14px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.presets{margin-bottom:1rem;display:flex;gap:8px;align-items:center}
.narrow-form{max-width:380px}

/* cards and pages */
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;margin-bottom:16px}
.card.narrow{max-width:420px;margin:8vh auto}
body.bare{padding:16px}
.page{max-width:900px;margin:0 auto;padding:16px}
.narrow-page{max-width:560px}
.flash{padding:10px 14px;border-radius:8px;margin:12px 0;font-size:14px}
.toast{position:fixed;top:64px;left:50%;transform:translateX(-50%);z-index:30;margin:0;max-width:min(560px,92vw);box-shadow:0 6px 24px #0003;transition:opacity .4s}.toast.gone{opacity:0;pointer-events:none}
.flash.ok{background:#E6F4EC;color:#14532D}.flash.err{background:#FDECEA;color:#7A1510}
.app-flash{max-width:900px;margin:12px auto 0}
@media (prefers-color-scheme:dark){.flash.ok{background:#16352A;color:#B9F0D0}.flash.err{background:#3B1A18;color:#FFC9C4}}
.notice{background:#FFF4E5;border:1px solid #F5D9A8;color:#6B4200;border-radius:8px;padding:10px 12px;margin:12px 0;font-size:14px}
@media (prefers-color-scheme:dark){.notice{background:#33280F;border-color:#5C4720;color:#F2D9A2}}
.steps{padding-left:20px}.steps li{margin-bottom:10px}
.keybox{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:18px;letter-spacing:1px;background:var(--bg);border:1px dashed var(--orange);padding:10px;border-radius:8px;margin-top:8px;word-break:break-all}
.codes{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:1rem 0}.codes code{background:var(--bg);padding:8px;border-radius:6px;text-align:center;font-size:15px}
.tag{background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:1px 8px;font-size:12px}
.tbl{width:100%;border-collapse:collapse;font-size:13px;margin-bottom:1rem}.tbl th,.tbl td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--line)}
.dot{display:inline-block;width:10px;height:10px;border-radius:50%;flex:none}.dot.big{width:16px;height:16px}
.acct-head{display:flex;gap:12px;align-items:center;margin-bottom:6px}

/* icons and avatars */
.ico{width:18px;height:18px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.av{width:36px;height:36px;border-radius:50%;color:#fff;font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;flex:none;letter-spacing:.3px}

/* top bar extras */
.search{position:relative}.search .ico{position:absolute;left:10px;top:50%;transform:translateY(-50%);color:#9A9AB0;width:16px;height:16px}.search input{padding-left:32px}
.compose-btn{display:inline-flex;align-items:center;gap:6px}.compose-btn .ico{width:16px;height:16px}

/* three panes */
body.app{min-height:100vh}
.shell{display:grid;grid-template-columns:240px 372px minmax(0,1fr);height:calc(100vh - 60px);height:calc(100dvh - 60px);overflow:hidden}

/* 1. sidebar (Apple Mail style source list) */
.sidebar{background:var(--bg);border-right:1px solid var(--line);padding:10px 8px;overflow-y:auto}
.side-link{display:flex;align-items:center;gap:10px;padding:6px 10px;border-radius:8px;color:var(--navy);font-size:14px;width:100%;text-align:left}
.side-link .ico{color:var(--orange);width:17px;height:17px}
.side-link span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.side-link:hover{background:#00000010;text-decoration:none}
.side-link.on{background:var(--orange);color:#fff}.side-link.on .ico{color:#fff}
.side-link.sub{padding-left:28px;font-size:13.5px}
.side-link.plain{background:none;border:0;font:inherit;cursor:pointer}
.badge{background:transparent;color:var(--muted);border-radius:20px;padding:0 4px;font-size:12px;font-weight:700;min-width:18px;text-align:right}
.side-link.on .badge{color:#fff}
.side-acct{margin-top:12px}
.side-acct>summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:8px;padding:4px 10px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted)}
.side-acct>summary::-webkit-details-marker{display:none}
.side-acct>summary span{flex:1}.side-acct>summary .ico{width:14px;height:14px;transition:transform .15s}
.side-acct:not([open])>summary .ico{transform:rotate(-90deg)}
details.more summary{cursor:pointer;font-size:12px;color:var(--muted);padding:4px 28px}
.side-foot{margin-top:18px;border-top:1px solid var(--line);padding-top:10px}
.side-close{color:var(--navy)!important;margin-left:auto}

/* 2. list (Outlook style rows) */
.listcol{background:var(--card);border-right:1px solid var(--line);display:flex;flex-direction:column;min-width:0;min-height:0}
.list-head{padding:12px 14px 8px;border-bottom:1px solid var(--line)}
.lh-top{display:flex;align-items:center;gap:8px}.lh-top h1{margin:0;font-size:20px}
.lh-bottom{display:flex;align-items:center;justify-content:space-between;margin-top:8px}
.icon-btn-sq{background:none;border:1px solid transparent;border-radius:8px;padding:6px;cursor:pointer;color:var(--navy);display:inline-flex}.icon-btn-sq:hover{background:var(--bg);border-color:var(--line)}
.seg{display:inline-flex;background:var(--bg);border-radius:8px;padding:2px}
.seg a{padding:3px 12px;border-radius:6px;font-size:13px;color:var(--muted)}.seg a:hover{text-decoration:none}
.seg a.on{background:var(--card);color:var(--navy);font-weight:700;box-shadow:0 1px 2px #0002}
.list-scroll{overflow-y:auto;flex:1;min-height:0}
.grp{position:sticky;top:0;z-index:1;background:var(--card);padding:8px 14px 4px;font-size:12px;font-weight:700;color:var(--orange-d);text-transform:uppercase;letter-spacing:.4px}
.list-scroll a.row{display:flex;flex-wrap:nowrap;align-items:flex-start;gap:8px;padding:10px 14px 10px 6px;border-left:3px solid transparent;border-bottom:1px solid var(--line);color:inherit}
.list-scroll a.row:hover{background:var(--bg);text-decoration:none}
.list-scroll a.row.sel{background:#E85D2619;border-left-color:var(--orange)}
.udot{width:8px;height:8px;border-radius:50%;flex:none;margin-top:14px;background:transparent}
.row.unread .udot{background:var(--orange)}
.rbody{flex:1;min-width:0;display:flex;flex-direction:column;gap:1px}
.r1,.r2,.r3{display:flex;align-items:center;gap:6px;min-width:0}
.who{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}
.row.unread .who,.row.unread .subj{font-weight:700}
.when{font-size:12px;color:var(--muted);flex:none}
.tcount{font-size:11px;font-weight:700;background:var(--bg);border:1px solid var(--line);color:var(--muted);border-radius:10px;padding:0 6px;flex:none}
.subj{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13.5px}
.r3{color:var(--muted);font-size:13px;display:block;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;white-space:normal}
.star{color:var(--orange);display:inline-flex}.star .ico{width:13px;height:13px;fill:currentColor}
.empty{text-align:center;padding:48px 16px;color:var(--muted)}.empty .ico{width:34px;height:34px;opacity:.5}
.pager{display:flex;gap:12px;align-items:center;justify-content:center;padding:14px}
.btn.small{padding:4px 10px;font-size:13px}

/* 3. reading pane */
.pane{display:flex;flex-direction:column;min-width:0;min-height:0;background:var(--bg)}
.pane-empty{margin:auto;text-align:center;color:var(--muted)}.pane-empty .ico{width:56px;height:56px;opacity:.35}
.pane-toolbar{display:flex;align-items:center;gap:6px;padding:8px 14px;background:var(--card);border-bottom:1px solid var(--line);flex-wrap:wrap}
.tb-group{display:flex;gap:2px}
.tb-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:8px;border:0;background:none;color:var(--navy);font:inherit;font-size:13.5px;cursor:pointer}
.tb-btn .ico{color:var(--orange)}.tb-btn:hover{background:var(--bg);text-decoration:none}
.pane-scroll{overflow-y:auto;flex:1;min-height:0;padding:18px 22px 40px}
.conv{max-width:860px;margin:0 auto}
.conv-head h2{font-size:22px;margin:0 0 2px}
.conv-head{margin-bottom:14px}
.mcard{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:10px;overflow:hidden}
.mc-head{display:flex;align-items:center;gap:10px;padding:12px 14px;cursor:pointer}
.mc-who{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.3}
.mc-who strong{font-size:14.5px}.mc-to{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mc-head>.ico{color:var(--muted);transition:transform .15s}
.mcard.open .mc-head>.ico{transform:rotate(180deg)}
.mc-snippet{padding:0 14px 12px 60px;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.mcard.open .mc-snippet{display:none}
.mc-body{display:none;padding:0 14px 14px}
.mcard.open .mc-body{display:block}
.mcard.mine{border-left:3px solid var(--orange)}
.meta{display:grid;grid-template-columns:48px 1fr;gap:2px 10px;font-size:13px;margin:0 0 10px 46px}.meta dt{color:var(--muted)}.meta dd{margin:0;word-break:break-word}
.body-frame{width:100%;border:0;min-height:80px;background:#fff;border-radius:8px;display:block}
.atts{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.att{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);border-radius:8px;padding:6px 10px;color:var(--navy);font-size:13px;background:var(--bg)}.att small{color:var(--muted)}.att .ico{color:var(--orange)}
.mc-actions{display:flex;gap:4px;margin-top:12px;padding-top:10px;border-top:1px solid var(--line)}
.mc-loading{padding:16px;color:var(--muted);font-size:13px}

/* tablet: folders slide in from the left */
@media (max-width:1100px){
  .only-mobile{display:inline-flex!important}
  .shell{grid-template-columns:340px minmax(0,1fr)}
  .sidebar{position:fixed;top:0;left:0;bottom:0;width:280px;z-index:40;transform:translateX(-102%);transition:transform .2s;background:var(--card);border-right:0}
  .sidebar.open{transform:none;box-shadow:4px 0 24px #0004}
  body.nav-open::after{content:"";position:fixed;inset:0;background:#0006;z-index:39}
}
/* phone: one pane at a time */
@media (max-width:760px){
  .topbar{flex-wrap:wrap;gap:8px 10px;height:auto;padding:10px 16px;position:static}
  .pane-toolbar{position:sticky;top:0;z-index:3}
  .compose-btn{margin-left:auto}.compose-btn span{display:none}
  .topnav{order:5;width:100%;gap:18px;font-size:13px}
  .side-foot{display:none}
  .search{order:6;flex:1 1 100%;max-width:none}
  .brand{order:0}
  .shell{grid-template-columns:minmax(0,1fr);height:auto;min-height:calc(100vh - 100px);overflow:visible}
  .listcol,.pane{min-height:60vh}
  .shell.has-open .listcol{display:none}
  .shell:not(.has-open) .pane{display:none}
  .only-narrow{display:inline-flex!important}
  .tb-btn span{display:none}.pane-toolbar .only-narrow span{display:inline}
  .pane-scroll{padding:12px 10px 40px}
  .meta{margin-left:0}
  .mc-snippet{padding-left:14px}
  .two,.three{grid-template-columns:1fr}
  .page{padding:12px}
  .card.narrow{margin:4vh auto}
  .tbl{display:block;overflow-x:auto}
}
@media (prefers-color-scheme:dark){.list-scroll a.row.sel{background:#E85D2633}.side-link:hover{background:#ffffff14}.side-close{color:#fff!important}}

/* settings: layout picker */
.styles{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:14px 0}
.style-opt{cursor:pointer;display:block;margin:0;font-weight:400}
.style-opt input{position:absolute;opacity:0;pointer-events:none}
.style-box{display:flex;flex-direction:column;gap:6px;border:2px solid var(--line);border-radius:12px;padding:14px;background:var(--card);height:100%}
.style-opt input:checked+.style-box{border-color:var(--orange);box-shadow:0 0 0 3px #E85D2626}
.style-opt input:focus-visible+.style-box{outline:2px solid var(--navy);outline-offset:2px}
.style-box small{color:var(--muted);font-size:13px;line-height:1.4}
.wire{display:flex;gap:4px;height:84px;background:var(--bg);border-radius:8px;padding:6px;margin-bottom:6px}
.wire i{display:block;border-radius:4px;background:var(--card);border:1px solid var(--line);padding:4px;font-style:normal}
.wire b{display:block;height:7px;border-radius:3px;background:var(--line);margin-bottom:5px}
.wire em{display:block;height:5px;border-radius:3px;background:var(--line);margin-bottom:4px;width:80%}
.w-side{width:18%}.w-list{width:30%}.w-pane{flex:1}.w-glist{flex:1}
.wire-outlook .w-list b:first-child,.wire-gmail .w-glist b:nth-child(2){background:var(--orange)}
.wire-gmail .w-glist b{height:6px;margin-bottom:6px}

/* compose button inside the folder list (Gmail style only) */
.side-compose{display:none;align-items:center;gap:10px;margin:4px 4px 12px;padding:12px 20px;border-radius:16px;background:var(--orange);color:#fff;font-weight:700;font-size:14px;box-shadow:0 1px 3px #0003;width:max-content}
.side-compose:hover{background:var(--orange-d);text-decoration:none}.side-compose .ico{color:#fff}

/* ===== Gmail style: compact full-width list, message opens on its own ===== */
.layout-gmail .compose-btn{display:none}
.layout-gmail .side-compose{display:inline-flex}
.layout-gmail .search input{border-radius:24px}
.shell.gmail{grid-template-columns:240px minmax(0,1fr)}
.shell.gmail .pane{display:none}
.shell.gmail.has-open .listcol{display:none}
.shell.gmail.has-open .pane{display:flex}
.shell.gmail .listcol{border-right:0}
.shell.gmail .side-link{border-radius:0 20px 20px 0;margin-left:-8px;padding-left:18px;width:calc(100% + 8px)}
.shell.gmail .side-link.sub{padding-left:34px}
.shell.gmail .side-link.on{background:#E85D2626;color:var(--navy);font-weight:700}
.shell.gmail .side-link.on .ico{color:var(--orange)}.shell.gmail .side-link.on .badge{color:var(--navy)}
.shell.gmail .list-head{padding:8px 16px;border-bottom:1px solid var(--line)}
.shell.gmail .lh-top h1{font-size:18px}
.shell.gmail .lh-bottom{margin-top:4px}
.grow{display:flex;align-items:center;gap:10px;padding:0 16px 0 12px;height:40px;border-bottom:1px solid var(--line);color:inherit;background:var(--bg);font-size:14px}
.grow.unread{background:var(--card)}
.grow:hover{text-decoration:none;box-shadow:inset 3px 0 0 var(--orange),0 1px 3px #0002;position:relative;z-index:1}
.g-star{color:var(--line);display:inline-flex;flex:none}.g-star .ico{width:18px;height:18px}
.g-star.on{color:var(--orange)}.g-star.on .ico{fill:currentColor}
.g-who{width:200px;flex:none;display:flex;align-items:center;gap:6px;min-width:0}
.g-who>span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.g-main{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.g-subj{font-weight:400}.g-snip{color:var(--muted)}
.grow.unread .g-who>span:first-child,.grow.unread .g-subj{font-weight:700}
.g-when{flex:none;width:64px;text-align:right;font-size:12px;color:var(--muted)}
.grow.unread .g-when{color:var(--navy);font-weight:700}
.shell.gmail .conv{max-width:none}
.shell.gmail .pane{background:var(--card)}
.shell.gmail .pane-scroll{padding:16px 32px 40px}
.shell.gmail .mcard{border:0;border-radius:0;border-bottom:1px solid var(--line);margin-bottom:0;background:transparent}
.shell.gmail .mcard.mine{border-left:0}
.shell.gmail .conv-head h2{font-size:22px;font-weight:400}
@media (max-width:1100px){.shell.gmail{grid-template-columns:minmax(0,1fr)}.layout-gmail .compose-btn{display:inline-flex}.side-compose{margin-top:8px}}
@media (max-width:760px){
  .grow{height:auto;flex-wrap:wrap;padding:8px 12px;row-gap:0}
  .g-who{width:calc(100% - 140px);order:1}.g-when{order:2;margin-left:auto}.g-star{order:0}
  .g-main{order:3;flex:1 1 100%;padding-left:28px}
  .grow .dot{order:2}
  .shell.gmail .pane-scroll{padding:12px 10px 40px}
  .styles{grid-template-columns:1fr}
}
@media (prefers-color-scheme:dark){.shell.gmail .side-link.on{background:#E85D2640;color:#fff}.shell.gmail .side-link.on .badge{color:#fff}}