/* ============================================================
   XuHoan Mail Admin — Black / White Design System
   ============================================================ */
:root {
  --black:    #000;
  --white:    #fff;
  --bg:       #0a0a0a;
  --bg-s:     #111;
  --bg-card:  #161616;
  --bg-hover: #1e1e1e;
  --border:   #222;
  --border-m: #2e2e2e;
  --text:     #f0f0f0;
  --muted:    #888;
  --dim:      #4a4a4a;
  --ok:       #4ade80;
  --warn:     #facc15;
  --err:      #f87171;
  --info:     #60a5fa;
  --font:     'Inter', system-ui, -apple-system, sans-serif;
  --mono:     'JetBrains Mono', 'Courier New', monospace;
  --sw:       240px;
  --th:       52px;
  --r:        6px;
  --rl:       10px;
}

*,*::before,*::after { box-sizing:border-box; margin:0; padding:0; }
html { font-size:14px; }
body { font-family:var(--font); background:var(--bg); color:var(--text); line-height:1.6; min-height:100vh; -webkit-font-smoothing:antialiased; }
a { color:inherit; text-decoration:none; }
button { font-family:var(--font); cursor:pointer; }
::-webkit-scrollbar { width:4px; height:4px; }
::-webkit-scrollbar-track { background:transparent; }
::-webkit-scrollbar-thumb { background:var(--border-m); border-radius:2px; }
::-webkit-scrollbar-thumb:hover { background:#555; }

/* ── Layout ── */
#app { display:flex; height:100vh; overflow:hidden; }
.main-content { flex:1; display:flex; flex-direction:column; overflow:hidden; min-width:0; }
.view-container { flex:1; overflow-y:auto; padding:24px; }

/* ── Sidebar ── */
.sidebar { width:var(--sw); min-width:var(--sw); background:var(--bg-s); border-right:1px solid var(--border); display:flex; flex-direction:column; height:100vh; overflow-y:auto; flex-shrink:0; transition:transform .25s ease; }
.sidebar.collapsed { transform:translateX(calc(-1 * var(--sw))); position:fixed; z-index:200; }

.sidebar-brand { padding:16px; border-bottom:1px solid var(--border); display:flex; align-items:center; gap:11px; }
.brand-icon { width:34px; height:34px; background:var(--white); color:var(--black); border-radius:var(--r); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.brand-title { font-size:.95rem; font-weight:700; display:block; }
.brand-title span { font-weight:400; color:var(--muted); }
.brand-sub { font-size:.7rem; color:var(--dim); font-family:var(--mono); display:block; margin-top:1px; }

.sidebar-nav { flex:1; padding:10px 8px; display:flex; flex-direction:column; gap:2px; }
.nav-group-label { font-size:.66rem; font-weight:700; color:var(--dim); letter-spacing:.08em; padding:14px 8px 5px; }
.nav-item { display:flex; align-items:center; gap:10px; padding:8px 10px; border-radius:var(--r); color:var(--muted); font-size:.86rem; font-weight:500; transition:all .15s ease; border:1px solid transparent; }
.nav-item:hover { background:var(--bg-hover); color:var(--text); }
.nav-item.active { background:var(--white); color:var(--black); }
.nav-item svg { flex-shrink:0; opacity:.7; }
.nav-item.active svg { opacity:1; }

.sidebar-footer { padding:14px 16px; border-top:1px solid var(--border); display:flex; flex-direction:column; gap:10px; }
.status-indicator { display:flex; align-items:center; gap:7px; font-size:.76rem; color:var(--muted); }
.status-indicator.online { color:var(--ok); }
.status-indicator.online .dot { width:7px; height:7px; border-radius:50%; background:var(--ok); animation:blink 2s ease infinite; flex-shrink:0; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }
.user-row { display:flex; align-items:center; gap:9px; }
.user-avatar { width:30px; height:30px; border-radius:50%; background:var(--bg-hover); border:1px solid var(--border-m); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:.78rem; flex-shrink:0; }
.user-name  { font-size:.8rem; font-weight:600; }
.user-email { font-size:.7rem; color:var(--dim); font-family:var(--mono); }

/* ── Topbar ── */
.topbar { height:var(--th); background:var(--bg-s); border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; padding:0 18px; flex-shrink:0; }
.topbar-left,.topbar-right { display:flex; align-items:center; gap:10px; }
.breadcrumb { font-size:.88rem; font-weight:600; }
.clock-widget { font-family:var(--mono); font-size:.8rem; color:var(--muted); }
.btn-icon { width:32px; height:32px; border:1px solid var(--border); background:transparent; color:var(--muted); border-radius:var(--r); display:flex; align-items:center; justify-content:center; transition:all .15s ease; }
.btn-icon:hover { background:var(--bg-hover); color:var(--text); border-color:var(--border-m); }

/* ── Page header ── */
.page-header { margin-bottom:22px; }
.page-header h1 { font-size:1.3rem; font-weight:700; letter-spacing:-.01em; }
.page-header p  { font-size:.83rem; color:var(--muted); margin-top:4px; }

/* ── Cards ── */
.card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--rl); overflow:hidden; }
.card-header { padding:14px 18px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.card-title { font-size:.88rem; font-weight:600; display:flex; align-items:center; gap:8px; }
.card-title svg { color:var(--muted); }
.card-body { padding:18px; }

/* ── Grid ── */
.grid-2 { display:grid; grid-template-columns:repeat(2,1fr); gap:16px; }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.grid-4 { display:grid; grid-template-columns:repeat(4,1fr); gap:16px; }
@media(max-width:1100px){ .grid-4{grid-template-columns:repeat(2,1fr)} }
@media(max-width:800px){ .grid-2,.grid-3,.grid-4{grid-template-columns:1fr} }

/* ── Stat Cards ── */
.stat-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--rl); padding:18px; display:flex; flex-direction:column; gap:9px; }
.stat-card:hover { border-color:var(--border-m); }
.stat-label { font-size:.72rem; color:var(--dim); letter-spacing:.05em; font-weight:600; text-transform:uppercase; display:flex; align-items:center; justify-content:space-between; }
.stat-value { font-size:1.55rem; font-weight:700; font-family:var(--mono); line-height:1; }
.stat-sub   { font-size:.74rem; color:var(--dim); }

/* ── Badges ── */
.stat-badge { display:inline-flex; align-items:center; gap:3px; font-size:.7rem; padding:2px 8px; border-radius:20px; font-family:var(--mono); font-weight:600; }
.badge-up      { background:rgba(74,222,128,.08); color:var(--ok);   border:1px solid rgba(74,222,128,.2); }
.badge-warn    { background:rgba(250,204,21,.08); color:var(--warn); border:1px solid rgba(250,204,21,.2); }
.badge-down    { background:rgba(248,113,113,.08);color:var(--err);  border:1px solid rgba(248,113,113,.2); }
.badge-info    { background:rgba(96,165,250,.08); color:var(--info); border:1px solid rgba(96,165,250,.2); }
.badge-neutral { background:var(--bg-hover); color:var(--muted); border:1px solid var(--border); }

/* ── Service rows ── */
.service-row { display:flex; align-items:center; justify-content:space-between; padding:13px 0; border-bottom:1px solid var(--border); }
.service-row:last-child { border-bottom:none; }
.service-info { display:flex; align-items:center; gap:11px; }
.svc-dot { width:7px; height:7px; border-radius:50%; flex-shrink:0; }
.svc-dot.up   { background:var(--ok); box-shadow:0 0 5px rgba(74,222,128,.4); }
.svc-dot.down { background:var(--err); }
.svc-name { font-size:.86rem; font-weight:600; }
.svc-desc { font-size:.76rem; color:var(--dim); }
.svc-meta { font-size:.74rem; color:var(--dim); font-family:var(--mono); text-align:right; }

/* ── Table ── */
.table-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; }
thead th { text-align:left; font-size:.71rem; font-weight:600; color:var(--dim); letter-spacing:.06em; text-transform:uppercase; padding:10px 16px; border-bottom:1px solid var(--border); background:var(--bg-s); }
tbody td { padding:12px 16px; font-size:.85rem; border-bottom:1px solid var(--border); vertical-align:middle; }
tbody tr:last-child td { border-bottom:none; }
tbody tr:hover td { background:rgba(255,255,255,.015); }
.td-mono { font-family:var(--mono); font-size:.8rem; color:var(--muted); }
.td-bold { font-weight:600; }

/* ── Progress ── */
.progress-wrap { width:100%; height:3px; background:var(--border); border-radius:2px; overflow:hidden; }
.progress-bar  { height:100%; border-radius:2px; background:var(--white); transition:width .5s ease; }
.progress-bar.warn   { background:var(--warn); }
.progress-bar.danger { background:var(--err); }

/* ── Code block ── */
.code-block { background:#000; border:1px solid var(--border); border-radius:var(--r); padding:14px 16px; font-family:var(--mono); font-size:.8rem; line-height:1.75; color:#ccc; overflow-x:auto; white-space:pre; }
.code-tabs { display:flex; border-bottom:1px solid var(--border); }
.code-tab-btn { padding:9px 14px; font-size:.8rem; font-family:var(--mono); border:none; background:transparent; color:var(--muted); border-bottom:2px solid transparent; margin-bottom:-1px; cursor:pointer; transition:all .15s; }
.code-tab-btn:hover { color:var(--text); }
.code-tab-btn.active { color:var(--text); border-bottom-color:var(--white); }

/* ── DNS cards ── */
.dns-card { background:var(--bg-card); border:1px solid var(--border); border-radius:var(--rl); overflow:hidden; }
.dns-card:hover { border-color:var(--border-m); }
.dns-card-head { padding:13px 16px; border-bottom:1px solid var(--border); display:flex; align-items:center; justify-content:space-between; }
.dns-type-tag { font-family:var(--mono); font-size:.72rem; font-weight:700; padding:2px 8px; border-radius:4px; background:var(--bg-hover); color:var(--muted); border:1px solid var(--border-m); letter-spacing:.04em; }
.dns-host { font-family:var(--mono); font-size:.82rem; font-weight:500; }
.dns-card-body { padding:13px 16px; display:flex; flex-direction:column; gap:9px; }
.dns-desc { font-size:.8rem; color:var(--dim); line-height:1.6; }

/* ── Log stream ── */
.log-stream { background:#000; border:1px solid var(--border); border-radius:var(--r); padding:12px; font-family:var(--mono); font-size:.78rem; height:260px; overflow-y:auto; display:flex; flex-direction:column; gap:2px; }
.log-line { display:flex; gap:8px; line-height:1.55; }
.log-ts  { color:var(--dim); flex-shrink:0; }
.log-svc { color:var(--info); flex-shrink:0; min-width:140px; }
.log-msg { color:#bbb; }
.log-msg.ok  { color:var(--ok); }
.log-msg.err { color:var(--err); }

/* ── Buttons ── */
.btn { display:inline-flex; align-items:center; gap:6px; padding:7px 14px; border-radius:var(--r); font-size:.84rem; font-weight:500; border:1px solid transparent; cursor:pointer; transition:all .15s; }
.btn-white   { background:var(--white); color:var(--black); }
.btn-white:hover { background:#ddd; }
.btn-outline { background:transparent; color:var(--muted); border-color:var(--border-m); }
.btn-outline:hover { background:var(--bg-hover); color:var(--text); }
.btn-danger  { background:transparent; color:var(--err); border-color:rgba(248,113,113,.3); }
.btn-danger:hover { background:rgba(248,113,113,.08); }

/* ── Form ── */
.form-field { display:flex; flex-direction:column; gap:5px; }
.form-label { font-size:.75rem; font-weight:600; color:var(--muted); letter-spacing:.04em; }
.form-input { background:var(--bg); border:1px solid var(--border-m); border-radius:var(--r); color:var(--text); font-family:var(--font); font-size:.86rem; padding:8px 11px; width:100%; outline:none; transition:border-color .15s; }
.form-input:focus { border-color:#555; }
select.form-input { cursor:pointer; }
textarea.form-input { resize:vertical; min-height:90px; }

/* ── Modal ── */
.modal-overlay { position:fixed; inset:0; background:rgba(0,0,0,.78); display:flex; align-items:center; justify-content:center; z-index:1000; }
.modal { background:var(--bg-s); border:1px solid var(--border-m); border-radius:var(--rl); width:460px; max-width:95vw; }
.modal-head { padding:16px 18px; border-bottom:1px solid var(--border); display:flex; justify-content:space-between; align-items:center; }
.modal-title { font-size:.92rem; font-weight:700; }
.modal-body  { padding:18px; display:flex; flex-direction:column; gap:13px; }
.modal-foot  { padding:12px 18px; border-top:1px solid var(--border); display:flex; justify-content:flex-end; gap:8px; }

/* ── Toast ── */
#toast-root { position:fixed; bottom:22px; right:22px; display:flex; flex-direction:column; gap:7px; z-index:2000; }
.toast { background:var(--bg-s); border:1px solid var(--border-m); border-radius:var(--rl); padding:11px 14px; display:flex; align-items:flex-start; gap:9px; min-width:270px; max-width:340px; box-shadow:0 8px 24px rgba(0,0,0,.6); animation:toast-in .3s cubic-bezier(.34,1.56,.64,1); }
@keyframes toast-in { from{transform:translateX(22px);opacity:0} to{transform:translateX(0);opacity:1} }
.toast-icon { flex-shrink:0; margin-top:1px; }
.toast-content { display:flex; flex-direction:column; gap:2px; }
.toast-title { font-size:.84rem; font-weight:600; }
.toast-desc  { font-size:.76rem; color:var(--muted); }
.toast.success .toast-icon { color:var(--ok); }
.toast.error   .toast-icon { color:var(--err); }
.toast.info    .toast-icon { color:var(--info); }
.toast.warn    .toast-icon { color:var(--warn); }

/* ── Nav badge ── */
.nav-item { position:relative; }
.nav-badge { margin-left:auto; background:var(--white); color:var(--black); font-size:.66rem; font-weight:700; padding:1px 6px; border-radius:20px; font-family:var(--mono); }
.nav-item.active .nav-badge { background:var(--black); color:var(--white); }

/* ── Quick Create Card ── */
.quick-create-card {
  background:var(--bg-card);
  border:1px solid var(--border-m);
  border-radius:var(--rl);
  padding:18px 20px;
  margin-bottom:18px;
}
.qc-title {
  font-size:.9rem;
  font-weight:700;
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  color:var(--text);
}
.qc-row {
  display:flex;
  gap:10px;
  align-items:flex-end;
  flex-wrap:wrap;
}
.qc-field {
  display:flex;
  flex-direction:column;
  gap:5px;
  min-width:130px;
}
.qc-hint {
  margin-top:10px;
  font-size:.76rem;
  color:var(--dim);
  display:flex;
  align-items:flex-start;
  gap:6px;
  line-height:1.5;
}
.qc-hint svg { flex-shrink:0; margin-top:1px; }

/* ── Email prefix input ── */
.email-input-wrap { display:flex; align-items:center; background:var(--bg); border:1px solid var(--border-m); border-radius:var(--r); overflow:hidden; }
.email-input-wrap .form-input { border:none; background:transparent; flex:1; }
.email-input-wrap .form-input:focus { border:none; outline:none; }
.email-domain { padding:0 10px; font-family:var(--mono); font-size:.8rem; color:var(--dim); white-space:nowrap; border-left:1px solid var(--border-m); height:36px; display:flex; align-items:center; }
.email-input-wrap:focus-within { border-color:#555; }

/* ── Password wrap ── */
.pass-wrap { display:flex; align-items:center; background:var(--bg); border:1px solid var(--border-m); border-radius:var(--r); overflow:hidden; }
.pass-wrap .form-input { border:none; background:transparent; flex:1; }
.pass-wrap .form-input:focus { border:none; outline:none; }
.pass-wrap:focus-within { border-color:#555; }
.pass-toggle { background:transparent; border:none; border-left:1px solid var(--border-m); padding:0 10px; color:var(--dim); height:36px; cursor:pointer; flex-shrink:0; }
.pass-toggle:hover { color:var(--text); background:var(--bg-hover); }

/* ── Mini avatar ── */
.mini-avatar {
  width:28px; height:28px; border-radius:50%;
  background:var(--bg-hover); border:1px solid var(--border-m);
  display:flex; align-items:center; justify-content:center;
  font-weight:700; font-size:.76rem; flex-shrink:0;
  font-family:var(--mono);
}

/* ── Danger icon button ── */
.btn-icon-danger { color:var(--dim); }
.btn-icon-danger:hover { color:var(--err); border-color:rgba(248,113,113,.3); background:rgba(248,113,113,.06); }

/* ── Topbar back button ── */
.topbar-back { display:inline-flex; align-items:center; gap:4px; font-size:.84rem; color:var(--muted); font-weight:500; transition:color .15s; }
.topbar-back:hover { color:var(--text); }
.topbar-sep { color:var(--dim); font-size:.84rem; }

/* ── Skeleton loader ── */
.skeleton-wrap { display:flex; flex-direction:column; gap:12px; }
.skel { background:linear-gradient(90deg, #161616 25%, #222222 50%, #161616 75%); background-size:200% 100%; animation:skel-pulse 1.5s infinite; border-radius:var(--r); }
@keyframes skel-pulse { 0%{background-position:200% 0} 100%{background-position:-200% 0} }
.skel-title { height:24px; width:200px; }
.skel-sub   { height:14px; width:340px; }
.skel-card  { height:80px; flex:1; }
.skel-table { height:220px; width:100%; }

.fade-in { animation:fadeIn .2s ease forwards; }
@keyframes fadeIn { from{opacity:0;transform:translateY(4px)} to{opacity:1;transform:translateY(0)} }
@keyframes slideDown { from{opacity:0;transform:translateY(-8px)} to{opacity:1;transform:translateY(0)} }

/* ── Plan Options & Badges ── */
.plan-option { display:flex; align-items:center; gap:6px; background:var(--bg); border:1px solid var(--border-m); border-radius:var(--r); padding:8px 12px; cursor:pointer; font-size:.82rem; font-family:var(--mono); flex:1; transition:all .15s; }
.plan-option:hover { border-color:#555; }
.plan-option input[type="radio"] { accent-color:var(--white); cursor:pointer; }

.plan-badge { font-family:var(--mono); font-size:.72rem; font-weight:700; padding:2px 8px; border-radius:4px; background:var(--white); color:var(--black); letter-spacing:.02em; }
.plan-badge-lg { font-size:.8rem; padding:4px 10px; }

/* ── Account Cards ── */
.account-card { background:var(--bg-card); border:1px solid var(--border-m); border-radius:var(--rl); padding:16px 20px; display:flex; align-items:center; justify-content:space-between; gap:16px; transition:border-color .15s; }
.account-card:hover { border-color:#444; }
.account-card.inactive { opacity:.6; }
.account-card-left { display:flex; align-items:center; gap:14px; min-width:200px; }
.account-avatar { width:38px; height:38px; border-radius:50%; background:var(--bg-s); border:1px solid var(--border-m); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:1rem; font-family:var(--mono); flex-shrink:0; }
.account-avatar-lg { width:48px; height:48px; border-radius:50%; background:var(--white); color:var(--black); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:1.3rem; font-family:var(--mono); flex-shrink:0; }
.account-name { font-size:.92rem; font-weight:700; }
.account-meta { font-size:.76rem; color:var(--muted); margin-top:2px; }

.account-card-mid { display:flex; flex-direction:column; align-items:flex-start; }
.account-card-right { display:flex; align-items:center; gap:10px; }

.account-header { background:var(--bg-card); border:1px solid var(--border-m); border-radius:var(--rl); padding:20px; display:flex; align-items:center; justify-content:space-between; gap:20px; margin-bottom:20px; }

/* ── Mailbox Cards ── */
.mailbox-card { background:var(--bg-card); border:1px solid var(--border-m); border-radius:var(--rl); padding:14px 18px; display:flex; align-items:center; justify-content:space-between; gap:16px; transition:border-color .15s; }
.mailbox-card:hover { border-color:#444; }
.mailbox-card.inactive { opacity:.55; }
.mailbox-left { display:flex; align-items:center; gap:14px; min-width:260px; }
.mail-avatar { width:32px; height:32px; border-radius:50%; background:var(--bg-s); border:1px solid var(--border-m); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:.82rem; font-family:var(--mono); flex-shrink:0; }
.mail-avatar.primary { background:var(--white); color:var(--black); border-color:var(--white); }

.mail-address { display:flex; align-items:center; gap:5px; font-family:var(--mono); font-size:.78rem; color:var(--muted); margin-top:2px; }
.primary-tag { font-size:.66rem; font-family:var(--mono); font-weight:700; background:rgba(255,255,255,.1); color:var(--text); padding:1px 6px; border-radius:3px; border:1px solid var(--border-m); margin-left:6px; }

.mailbox-mid { text-align:right; font-family:var(--mono); min-width:100px; }
.mailbox-right { display:flex; align-items:center; gap:8px; }

/* ── Inline Nickname Editing ── */
.nick-wrap { display:flex; align-items:center; gap:6px; }
.nick-text { font-size:.88rem; font-weight:700; color:var(--text); }
.nick-edit-btn { background:transparent; border:none; color:var(--dim); padding:2px; cursor:pointer; display:inline-flex; align-items:center; border-radius:3px; transition:color .15s; }
.nick-edit-btn:hover { color:var(--text); }

.nick-wrap.editing .nick-input { background:var(--bg); border:1px solid var(--border-m); border-radius:var(--r); color:var(--text); font-family:var(--font); font-size:.86rem; padding:3px 8px; outline:none; width:160px; }
.nick-wrap.editing .nick-input:focus { border-color:#666; }
.nick-btn-save { background:var(--white); color:var(--black); border:none; border-radius:var(--r); padding:3px 8px; font-size:.76rem; font-weight:600; cursor:pointer; }
.nick-btn-cancel { background:transparent; color:var(--muted); border:1px solid var(--border-m); border-radius:var(--r); padding:3px 8px; font-size:.76rem; cursor:pointer; }

/* ── Empty state ── */
.empty-state { background:var(--bg-card); border:1px dashed var(--border-m); border-radius:var(--rl); padding:40px 20px; text-align:center; display:flex; flex-direction:column; align-items:center; gap:10px; color:var(--dim); }
.empty-title { font-size:.95rem; font-weight:600; color:var(--muted); }
.empty-sub { font-size:.8rem; }