*{box-sizing:border-box}
:root{
  --bg:#f4f7fb;
  --panel:#ffffff;
  --navy:#0f2747;
  --navy-2:#18395f;
  --text:#162033;
  --muted:#6c7890;
  --line:#e6ebf2;
  --accent:#2f6fed;
  --danger-bg:#fff1f2;
  --danger:#b42318;
  --shadow:0 14px 40px rgba(15,39,71,.12)
}
html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
.auth-page{min-height:100vh;background:linear-gradient(145deg,#0f2747 0,#18395f 42%,#f4f7fb 42%) no-repeat}
.auth-shell{width:min(100% - 32px,460px);margin:0 auto;padding:48px 0 24px}
.brand-block{display:flex;align-items:center;gap:14px;color:#fff;margin-bottom:28px}
.brand-mark{width:54px;height:54px;border-radius:16px;background:#fff;color:var(--navy);display:grid;place-items:center;font-size:28px;font-weight:800;box-shadow:var(--shadow)}
.brand-block h1{font-size:29px;line-height:1;margin:0 0 5px}
.brand-block p{margin:0;opacity:.82}
.card{background:var(--panel);border-radius:22px;box-shadow:var(--shadow)}
.login-card{padding:28px}
.login-card h2{margin:0 0 8px;font-size:24px}
.muted{color:var(--muted);line-height:1.5;margin:0 0 22px}
label{display:block;font-weight:700;font-size:14px;margin:16px 0 7px}
input{width:100%;min-height:50px;border:1px solid #d9e0ea;border-radius:13px;padding:0 14px;background:#fff;outline:none}
input:focus{border-color:#6f9bf5;box-shadow:0 0 0 4px rgba(47,111,237,.10)}
.password-wrap{position:relative}
.password-wrap input{padding-right:88px}
.ghost-btn{position:absolute;right:8px;top:7px;height:36px;border:0;background:#eef3fb;color:var(--navy);border-radius:9px;padding:0 10px;font-weight:700}
.primary-btn{width:100%;min-height:52px;border:0;border-radius:13px;background:var(--navy);color:#fff;font-weight:800;margin-top:22px;cursor:pointer}
.server-note{font-size:12px;color:var(--muted);text-align:center;margin-top:16px}
.alert{background:var(--danger-bg);color:var(--danger);border:1px solid #ffd1d5;border-radius:12px;padding:12px 14px;margin:14px 0}
.auth-shell footer{text-align:center;color:#fff;margin-top:24px;font-size:13px;opacity:.78}

.topbar{height:64px;background:var(--navy);color:#fff;position:sticky;top:0;z-index:20}
.topbar-inner{height:64px;display:flex;align-items:center;max-width:1440px;margin:0 auto;padding:0 16px;gap:12px}
.icon-btn{width:42px;height:42px;border-radius:11px;border:0;background:rgba(255,255,255,.10);color:#fff;display:grid;place-items:center;font-size:20px;cursor:pointer}
.topbar-brand{display:flex;flex-direction:column;line-height:1.2}
.topbar-brand span{font-size:12px;opacity:.75}
.link-btn{margin-left:auto}
.mail-layout{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:calc(100vh - 64px)}
.sidebar{background:#fff;border-right:1px solid var(--line);padding:18px 14px;z-index:25}
.account-box{display:flex;gap:10px;align-items:center;padding:10px 8px 18px;border-bottom:1px solid var(--line);margin-bottom:10px}
.avatar{width:40px;height:40px;flex:0 0 40px;border-radius:50%;background:#e8eef8;color:var(--navy);display:grid;place-items:center;font-weight:800}
.account-box strong{display:block;max-width:175px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}
.account-box small{color:var(--muted)}
.sidebar nav{display:flex;flex-direction:column;gap:5px}
.sidebar nav a{display:grid;grid-template-columns:25px 1fr auto;align-items:center;gap:8px;padding:11px 12px;border-radius:11px;color:#334057;font-size:14px}
.sidebar nav a.active{background:#eaf1ff;color:#144da7;font-weight:800}
.sidebar nav a:hover{background:#f3f6fa}
.sidebar nav a.disabled{opacity:.55;cursor:not-allowed}
.sidebar nav em{font-style:normal;font-size:10px;color:var(--muted)}
.mail-main{min-width:0;padding:24px}
.mail-main-head{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:18px}
.mail-main-head h1{font-size:26px;margin:0 0 4px}
.mail-main-head p{margin:0;color:var(--muted);font-size:13px}
.compose-btn{border:0;border-radius:12px;padding:11px 15px;background:var(--accent);color:#fff;font-weight:800;opacity:.55}
.message-list{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}
.message-row{display:grid;grid-template-columns:minmax(150px,220px) minmax(0,1fr) auto;align-items:center;gap:16px;padding:14px 16px;border-bottom:1px solid var(--line);background:#fff}
.message-row:last-child{border-bottom:0}
.message-row.unread{background:#f7faff}
.message-row.unread .sender,.message-row.unread .subject{font-weight:800}
.sender{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.subject{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:#46526a}
.message-row time{font-size:12px;color:var(--muted);white-space:nowrap}
.empty-state{text-align:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:60px 20px}
.empty-state>div{font-size:40px}
.empty-state h2{margin:12px 0 5px}
.empty-state p{margin:0;color:var(--muted)}
.sidebar-backdrop{display:none}

@media (max-width:760px){
  .auth-page{background:linear-gradient(180deg,#0f2747 0,#18395f 28%,#f4f7fb 28%) no-repeat}
  .auth-shell{padding-top:30px;width:min(100% - 24px,460px)}
  .login-card{padding:22px}
  .mail-layout{display:block}
  .sidebar{position:fixed;top:64px;left:0;bottom:0;width:min(84vw,300px);transform:translateX(-105%);transition:transform .2s ease;box-shadow:20px 0 40px rgba(0,0,0,.16)}
  .menu-open .sidebar{transform:translateX(0)}
  .sidebar-backdrop{position:fixed;inset:64px 0 0;background:rgba(0,0,0,.35);z-index:22}
  .menu-open .sidebar-backdrop{display:block}
  .mail-main{padding:16px 12px 90px}
  .mail-main-head{align-items:flex-start}
  .mail-main-head h1{font-size:22px}
  .compose-btn{display:none}
  .message-list{border-radius:14px}
  .message-row{grid-template-columns:minmax(0,1fr) auto;gap:3px 10px;padding:13px 14px}
  .sender{grid-column:1}
  .subject{grid-column:1/3;grid-row:2}
  .message-row time{grid-column:2;grid-row:1}
}

.compose-link{display:inline-flex;align-items:center;justify-content:center;text-decoration:none}
.message-link{color:inherit;text-decoration:none}
.message-link:hover{background:#f3f7fd}
.reader-wrap,.compose-wrap{width:min(100% - 28px,980px);margin:24px auto}
.reader-card,.compose-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 34px rgba(15,39,71,.08);overflow:hidden}
.reader-head{padding:22px 24px;border-bottom:1px solid var(--line)}
.reader-head h1{margin:0 0 16px;font-size:25px;line-height:1.25}
.reader-meta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:#45526a}
.reader-meta strong{color:#162033}
.reader-meta time{margin-left:auto;color:var(--muted);font-size:13px}
.reader-to{margin-top:6px;font-size:13px;color:var(--muted)}
.reader-body{padding:26px 24px;line-height:1.65;min-height:180px;overflow-wrap:anywhere}
.reader-actions{display:flex;gap:10px;padding:18px 24px;border-top:1px solid var(--line)}
.primary-action,.secondary-action{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border-radius:11px;font-weight:800;text-decoration:none}
.primary-action{background:var(--navy);color:#fff}
.secondary-action{background:#eef3f8;color:var(--navy)}
.mail-html-frame{width:100%;min-height:500px;border:0;background:#fff}
.compose-card{padding:24px}
.compose-card h1{margin:0 0 12px}
.compose-card textarea{width:100%;resize:vertical;border:1px solid #d9e0ea;border-radius:13px;padding:14px;outline:none;line-height:1.5}
.compose-card textarea:focus{border-color:#6f9bf5;box-shadow:0 0 0 4px rgba(47,111,237,.10)}
.compose-actions{display:flex;align-items:center;gap:10px;margin-top:18px}
.send-btn{width:auto;min-width:180px;margin:0}
.success{background:#ecfdf3;color:#067647;border:1px solid #abefc6;border-radius:12px;padding:12px 14px;margin:14px 0}
.link-btn-left{flex:0 0 42px}
@media (max-width:760px){
  .reader-wrap,.compose-wrap{width:100%;margin:0;padding:12px}
  .reader-card,.compose-card{border-radius:14px}
  .reader-head{padding:18px 16px}
  .reader-head h1{font-size:21px}
  .reader-meta{display:block}
  .reader-meta span,.reader-meta time{display:block;margin:4px 0 0}
  .reader-body{padding:20px 16px}
  .reader-actions{padding:14px 16px;position:sticky;bottom:0;background:#fff}
  .reader-actions .primary-action,.reader-actions .secondary-action{flex:1}
  .compose-card{padding:18px 16px}
  .compose-actions{flex-direction:column}
  .send-btn,.compose-actions .secondary-action{width:100%}
  .mail-html-frame{min-height:65vh}
}

.sidebar-compose{display:flex;align-items:center;justify-content:center;background:var(--navy);color:#fff;border-radius:11px;padding:11px;margin:4px 4px 14px;font-weight:800}
.search-bar{display:flex;gap:8px;align-items:center;margin-bottom:14px}
.search-bar input{flex:1;min-width:0;margin:0}
.search-bar button{border:0;background:var(--navy);color:#fff;border-radius:11px;padding:0 16px;min-height:48px;font-weight:800}
.search-bar a{padding:10px;color:var(--navy);font-weight:700}
.attachments-box{padding:14px 24px;background:#f8fafc;border-bottom:1px solid var(--line)}
.attachments-list{display:flex;flex-wrap:wrap;gap:8px;margin-top:9px}
.attachments-list a{display:inline-flex;align-items:center;gap:6px;padding:9px 11px;background:#fff;border:1px solid var(--line);border-radius:10px;font-size:13px}
.attachments-list small{color:var(--muted)}
.reader-actions-wrap{flex-wrap:wrap;align-items:center}
.inline-action{margin:0}
.danger-action{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border:0;border-radius:11px;background:#fff1f2;color:#b42318;font-weight:800;cursor:pointer}
.move-form{display:flex;gap:8px;align-items:center;margin-left:auto}
.move-form select{min-height:42px;border:1px solid #d9e0ea;border-radius:10px;padding:0 10px;background:#fff;max-width:210px}
.form-help{display:block;color:var(--muted);margin-top:6px}
@media(max-width:760px){
  .search-bar{display:grid;grid-template-columns:1fr auto}
  .search-bar a{grid-column:1/3;text-align:center;padding:5px}
  .attachments-box{padding:12px 16px}
  .attachments-list{display:grid}
  .attachments-list a{width:100%}
  .reader-actions-wrap{display:grid;grid-template-columns:1fr 1fr}
  .inline-action,.inline-action button{width:100%}
  .move-form{grid-column:1/3;margin:0;display:grid;grid-template-columns:1fr auto}
  .move-form select{max-width:none;width:100%}
}

.install-bar{
  position:fixed;left:50%;bottom:18px;transform:translateX(-50%);
  width:min(92vw,680px);z-index:60;background:#fff;border:1px solid var(--line);
  box-shadow:0 18px 45px rgba(15,39,71,.22);border-radius:16px;padding:12px;
  display:grid;grid-template-columns:44px 1fr auto auto;gap:10px;align-items:center
}
.install-bar[hidden]{display:none!important}
.install-bar-icon img{width:44px;height:44px;border-radius:11px;display:block}
.install-bar-text{min-width:0}
.install-bar-text strong{display:block;color:var(--navy)}
.install-bar-text span{display:block;color:var(--muted);font-size:12px;margin-top:2px}
.install-now{border:0;background:var(--navy);color:#fff;border-radius:10px;padding:10px 14px;font-weight:800;cursor:pointer}
.install-close{border:0;background:#eef3f8;color:var(--navy);width:34px;height:34px;border-radius:9px;font-size:20px;cursor:pointer}
@media(max-width:600px){
  .install-bar{bottom:12px;width:calc(100vw - 20px);grid-template-columns:40px 1fr auto;padding:10px}
  .install-bar-icon img{width:40px;height:40px}
  .install-bar-text span{font-size:11px}
  .install-close{position:absolute;top:-10px;right:-6px;width:28px;height:28px;border-radius:50%;box-shadow:0 4px 12px rgba(0,0,0,.15)}
}

.client-accent-bg{background:var(--client-accent,var(--navy))!important}
.settings-top{margin-left:auto}
.link-btn.settings-top{margin-left:auto}
.topbar .settings-top + .link-btn{margin-left:0}
.avatar-logo{overflow:hidden;background:#fff;border:1px solid var(--line)}
.avatar-logo img{width:100%;height:100%;object-fit:contain}
.settings-wrap{width:min(100% - 28px,1180px);margin:24px auto;display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.settings-card,.signature-preview{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 34px rgba(15,39,71,.08);padding:24px}
.settings-head h1,.signature-preview h2{margin:0 0 7px}
.settings-head p{margin:0 0 20px;color:var(--muted)}
.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.settings-grid .span-2{grid-column:1/3}
.settings-grid textarea{width:100%;border:1px solid #d9e0ea;border-radius:13px;padding:12px;resize:vertical;line-height:1.5}
.color-row{display:flex;align-items:center;gap:10px}
.color-row input[type=color]{width:62px;height:50px;padding:4px}
.settings-actions{display:flex;gap:10px;align-items:center;margin-top:20px}
.save-settings{width:auto;min-width:210px;margin:0}
.remove-logo-form{margin-top:12px}
.signature-preview{position:sticky;top:86px}
.preview-card{border-top:4px solid var(--navy);padding-top:14px;font-size:13px;line-height:1.5}
.preview-logo{max-width:180px;max-height:80px;object-fit:contain;margin-bottom:10px}
.preview-note{margin-bottom:10px}
@media(max-width:900px){
  .settings-wrap{grid-template-columns:1fr}
  .signature-preview{position:static}
}
@media(max-width:640px){
  .settings-wrap{width:100%;margin:0;padding:12px}
  .settings-card,.signature-preview{border-radius:14px;padding:18px 16px}
  .settings-grid{grid-template-columns:1fr}
  .settings-grid .span-2{grid-column:auto}
  .settings-actions{flex-direction:column}
  .save-settings,.settings-actions .secondary-action{width:100%}
}

.admin-page{background:var(--bg);min-height:100vh}
.admin-wrap{width:min(100% - 28px,1180px);margin:24px auto 60px}
.admin-form-wrap{width:min(100% - 28px,900px);margin:24px auto 60px}
.admin-title-row{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:18px}
.admin-title-row h1,.admin-panel h1{margin:0 0 5px}
.admin-title-row p{margin:0;color:var(--muted)}
.admin-top-link{color:#fff;font-size:13px;font-weight:700;padding:8px 10px;border-radius:8px;background:rgba(255,255,255,.10)}
.admin-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:18px}
.admin-stats>div{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;display:flex;flex-direction:column;box-shadow:0 8px 24px rgba(15,39,71,.06)}
.admin-stats strong{font-size:28px;color:var(--navy)}
.admin-stats span{color:var(--muted);font-size:13px}
.admin-panel{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;margin-bottom:18px;box-shadow:0 8px 24px rgba(15,39,71,.06)}
.panel-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}
.panel-head h2{margin:0}
.admin-table-wrap{overflow:auto}
.admin-table{width:100%;border-collapse:collapse;min-width:650px}
.admin-table th,.admin-table td{padding:12px 10px;border-bottom:1px solid var(--line);text-align:left;font-size:13px}
.admin-table th{color:var(--muted);font-weight:700}
.admin-table a{color:#2459a9;font-weight:700}
.status-pill{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:11px;font-weight:800}
.status-pill.on{background:#ecfdf3;color:#067647}
.status-pill.off{background:#f2f4f7;color:#667085}
.switch-row{display:flex;align-items:center;gap:10px;margin:14px 0;padding:12px;background:#f8fafc;border:1px solid var(--line);border-radius:11px}
.switch-row input{width:auto;min-height:auto}
.switch-row span{font-weight:700;font-size:13px}
.danger-check{background:#fff5f5}
.admin-logo-preview{margin:14px 0;padding:12px;border:1px solid var(--line);border-radius:12px;background:#fafafa}
.admin-logo-preview img{max-width:220px;max-height:90px;object-fit:contain}
.domain-summary{display:flex;justify-content:space-between;gap:10px;align-items:center;padding:12px 14px;border-radius:11px;background:#eef4ff;color:#243b67;margin:14px 0}
.domain-summary span{font-size:12px}
.effective-preview{margin-top:24px;padding:16px;border:1px solid var(--line);border-radius:12px;background:#fafcff}
.effective-preview h2{margin-top:0}
.effective-preview p{margin:8px 0}
@media(max-width:760px){
  .admin-wrap,.admin-form-wrap{width:100%;margin:0;padding:12px}
  .admin-title-row{align-items:flex-start;flex-direction:column}
  .admin-stats{grid-template-columns:1fr}
  .admin-top-link{display:none}
  .domain-summary{align-items:flex-start;flex-direction:column}
}