:root {
  --sidebar-w: 268px;
  --sidebar-w-collapsed: 66px;
  --topbar-h: 52px;

  --sidebar-bg: #1b2138;
  --sidebar-bg-2: #151a2e;
  --sidebar-fg: #c7cee0;
  --sidebar-fg-dim: #8b93ac;
  --sidebar-hover: #262d48;
  --accent: #4f7cff;
  --accent-soft: rgba(79, 124, 255, 0.16);
  --danger: #e2564d;
  --badge-bg: #e2564d;

  /* Cores da área de conteúdo (temáveis: claro/escuro) */
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #f7f9fd;
  --topbar-bg: #ffffff;
  --border: #e5e8f0;
  --text: #1f2437;
  --muted: #6b7288;
  --input-bg: #ffffff;
}

html[data-theme="dark"] {
  --bg: #0f1421;
  --surface: #171d2b;
  --surface-2: #1c2333;
  --topbar-bg: #171d2b;
  --border: #2a3346;
  --text: #e6eaf2;
  --muted: #94a0b8;
  --input-bg: #1c2333;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
}
button { font-family: inherit; }

/* ============ LOGIN (ecrã dividido) ============ */
.hauth { position: fixed; inset: 0; display: grid; grid-template-columns: 1fr 1fr; background: #fff; }
.hauth-form { display: flex; flex-direction: column; justify-content: center; padding: 40px 6vw; overflow-y: auto; }
.hauth-form .inner { width: 100%; max-width: 360px; margin: 0 auto; }
.hauth-brandmark { display: flex; align-items: center; gap: 10px; margin-bottom: 26px; }
.hauth-brandmark .mk { width: 40px; height: 40px; border-radius: 11px;
  background: linear-gradient(135deg, #3b82f6, #1e5fd0); display: flex; align-items: center; justify-content: center; color: #fff; }
.hauth-brandmark .wm { font-size: 19px; font-weight: 800; color: var(--text); }
.hauth-brandmark .wm span { color: var(--accent); font-weight: 700; }
.hauth-form h1 { font-size: 26px; margin: 4px 0 6px; }
.hauth-form .sub { color: #6b7288; font-size: 14px; margin: 0 0 22px; }
.pwwrap { position: relative; }
.pwwrap .eye { position: absolute; right: 8px; top: 50%; transform: translateY(-50%);
  background: transparent; border: none; cursor: pointer; font-size: 15px; opacity: 0.6; }
.pwwrap .eye:hover { opacity: 1; }
.hauth-foot { font-size: 12px; color: #99a1b3; text-align: center; margin-top: 18px; }

.hauth-brand { position: relative; overflow: hidden; color: #eaf1fb;
  padding: 56px 5vw; display: flex; flex-direction: column; justify-content: center;
  background: linear-gradient(150deg, #1b2138 0%, #10142a 100%); }
.hauth-brand::before { content: ""; position: absolute; inset: 0; opacity: 0.5;
  background: radial-gradient(60% 60% at 80% 10%, rgba(79,124,255,0.18), transparent 60%); }
.hauth-brand > * { position: relative; }
.hauth-brand .eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 11px; color: #8ba3cc; margin-bottom: 14px; }
.hauth-brand h2 { font-size: 38px; line-height: 1.12; font-weight: 800; margin: 0 0 18px; color: #fff; }
.hauth-brand h2 .hl { color: var(--accent); }
.hauth-brand p.lead { font-size: 15px; line-height: 1.6; color: #b7c8e0; max-width: 34ch; margin: 0; }
.hauth-brand .pulse { margin: 34px 0; height: 44px; width: 100%; max-width: 360px; }
.hauth-brand ul.feat { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 12px; }
.hauth-brand ul.feat li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: #d5e2f4; }
.hauth-brand .statuspill { position: absolute; top: 26px; right: 5vw; display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.12); border-radius: 999px;
  padding: 6px 13px; font-size: 12px; color: #cfe0f5; }
.hauth-brand .statuspill .dot { width: 8px; height: 8px; border-radius: 50%; background: #34d399; box-shadow: 0 0 0 3px rgba(52,211,153,0.2); }
.hauth-brand .citytag { position: absolute; bottom: 34px; left: 5vw; font-size: 12px; color: #6f88ab; }
@media (max-width: 860px) { .hauth { grid-template-columns: 1fr; } .hauth-brand { display: none; } }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; color: #556; margin-bottom: 6px; font-weight: 600; }
.field input {
  width: 100%; padding: 11px 12px; border: 1px solid var(--border);
  border-radius: 9px; font-size: 14px; background: #fbfcfe;
}
.field input:focus { outline: none; border-color: var(--accent); background: #fff; }
.btn {
  width: 100%; padding: 11px; border: none; border-radius: 9px;
  background: var(--accent); color: #fff; font-size: 15px; font-weight: 600;
  cursor: pointer; margin-top: 4px;
}
.btn:hover { filter: brightness(1.05); }
.btn:disabled { opacity: 0.6; cursor: default; }
.auth-err { background: #fdecea; color: #b3261e; border-radius: 8px; padding: 9px 12px;
  font-size: 13px; margin-bottom: 14px; }

/* ============ APP SHELL ============ */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  height: 100vh;
  transition: grid-template-columns 0.2s ease;
}
.app.collapsed { grid-template-columns: var(--sidebar-w-collapsed) 1fr; }

.sidebar {
  background: linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-2) 100%);
  color: var(--sidebar-fg);
  display: flex; flex-direction: column; overflow: hidden;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 16px; min-height: var(--topbar-h);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.brand-logo { color: var(--accent); display: flex; flex-shrink: 0; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; overflow: hidden; }
.brand-name { font-weight: 700; font-size: 15px; color: #fff; white-space: nowrap; }
.brand-tag { font-size: 11px; color: var(--sidebar-fg-dim); letter-spacing: 1px; text-transform: uppercase; }
.collapse-btn { margin-left: auto; background: transparent; border: none;
  color: var(--sidebar-fg-dim); cursor: pointer; padding: 4px; border-radius: 6px; display: flex; }
.collapse-btn:hover { color: #fff; background: rgba(255,255,255,0.08); }

.nav { flex: 1; overflow-y: auto; padding: 8px; }
.nav::-webkit-scrollbar { width: 6px; }
.nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.12); border-radius: 3px; }

/* App entry (top-level) */
.app-entry {
  display: flex; align-items: center; gap: 11px; width: 100%;
  padding: 11px 12px; background: transparent; border: none;
  color: var(--sidebar-fg); font-size: 14px; font-weight: 600;
  cursor: pointer; border-radius: 9px; text-align: left; margin-bottom: 2px;
}
.app-entry:hover { background: var(--sidebar-hover); color: #fff; }
.app-entry.active { background: var(--accent-soft); color: #fff; }
.app-entry .ico { flex-shrink: 0; display: flex; font-size: 17px; width: 20px; justify-content: center; }
.app-entry .lbl { flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.app-entry .chev { flex-shrink: 0; transition: transform 0.18s ease; color: var(--sidebar-fg-dim); display: flex; }
.app-entry.open .chev { transform: rotate(90deg); }
.app-entry .ext { flex-shrink: 0; color: var(--sidebar-fg-dim); display: flex; }

/* Sub-items (e.g. Backup Monitor categories) — bloco encaixado com barra
   vertical à esquerda, para se lerem como filhos da app. */
.subnav { display: none; flex-direction: column; }
.subnav.open {
  display: flex; position: relative;
  background: rgba(0,0,0,0.22);
  border-radius: 10px;
  margin: 0 2px 10px 14px;
  padding: 7px 5px 7px 0;
}
.subnav.open::before {
  content: ""; position: absolute; left: 15px; top: 10px; bottom: 10px;
  width: 2px; background: rgba(255,255,255,0.12); border-radius: 2px;
}
.subitem {
  display: flex; align-items: center; gap: 9px;
  padding: 7px 10px 7px 30px; border-radius: 7px; margin: 0 4px;
  color: var(--sidebar-fg-dim); font-size: 13px; cursor: pointer;
  border: none; background: transparent; text-align: left; width: calc(100% - 8px);
  white-space: nowrap; position: relative;
}
.subitem:hover { background: var(--sidebar-hover); color: #fff; }
.subitem.active { background: rgba(79,124,255,0.14); color: #fff; }
.subitem.active::before {
  content: ""; position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  width: 8px; height: 8px; border-radius: 50%; background: var(--accent);
  box-shadow: 0 0 0 3px var(--sidebar-bg-2);
}
.subitem .ico { flex-shrink: 0; width: 18px; text-align: center; font-size: 14px; }
.subitem .lbl { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.subitem .badge { flex-shrink: 0; background: var(--badge-bg); color: #fff;
  font-size: 11px; font-weight: 700; border-radius: 10px; padding: 1px 7px; min-width: 18px; text-align: center; }
.subitem .badge.blue { background: var(--accent); }
.subitem .subext { flex-shrink: 0; color: var(--sidebar-fg-dim); display: flex; }
.sub-sep { height: 1px; background: rgba(255,255,255,0.10); margin: 6px 14px 6px 30px; }
.subnav-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; font-weight: 700;
  color: var(--sidebar-fg-dim); padding: 10px 14px 5px 30px; border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 4px; }

/* Área de gestão ao fundo da sidebar (Definições) */
.nav-bottom { padding: 6px 8px; border-top: 1px solid rgba(255,255,255,0.06); }
.nav-bottom .app-entry { font-weight: 600; }

.subnav-loading { padding: 8px 10px 8px 30px; font-size: 12px; color: var(--sidebar-fg-dim); font-style: italic; }

.sidebar-footer { padding: 8px; border-top: 1px solid rgba(255,255,255,0.06); position: relative; }
.footer-row { display: flex; align-items: center; gap: 6px; }
.footer-row .user-btn { flex: 1; }
.theme-toggle { flex-shrink: 0; width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  background: transparent; border: 1px solid rgba(255,255,255,0.12); border-radius: 9px;
  color: var(--sidebar-fg); cursor: pointer; }
.theme-toggle:hover { background: var(--sidebar-hover); color: #fff; }
.app.collapsed .footer-row { flex-direction: column; }
.user-btn {
  display: flex; align-items: center; gap: 10px; width: 100%;
  background: transparent; border: none; color: var(--sidebar-fg);
  padding: 9px 10px; border-radius: 9px; cursor: pointer; text-align: left;
}
.user-btn:hover { background: var(--sidebar-hover); color: #fff; }
.user-avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--accent);
  color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 13px; flex-shrink: 0; }
.user-meta { flex: 1; overflow: hidden; }
.user-name { font-size: 13px; font-weight: 600; color: #fff; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 11px; color: var(--sidebar-fg-dim); }
.user-menu {
  position: absolute; bottom: 62px; left: 8px; right: 8px;
  background: #232a45; border: 1px solid rgba(255,255,255,0.1); border-radius: 10px;
  overflow: hidden; box-shadow: 0 12px 30px rgba(0,0,0,0.4); display: none;
}
.user-menu.open { display: block; }
.user-menu button {
  display: block; width: 100%; text-align: left; background: transparent; border: none;
  color: var(--sidebar-fg); padding: 10px 14px; font-size: 13px; cursor: pointer;
}
.user-menu button:hover { background: var(--sidebar-hover); color: #fff; }
.theme-row { display: flex; align-items: center; gap: 6px; padding: 9px 12px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.theme-row > span { font-size: 12px; color: var(--sidebar-fg-dim); margin-right: auto; }
.theme-row button { background: transparent; border: 1px solid rgba(255,255,255,0.14); color: var(--sidebar-fg);
  font-size: 11px; padding: 3px 9px; border-radius: 6px; cursor: pointer; width: auto; }
.theme-row button:hover { background: var(--sidebar-hover); color: #fff; }
.theme-row button.on { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Collapsed */
.app.collapsed .brand-text, .app.collapsed .brand-logo,
.app.collapsed .app-entry .lbl, .app.collapsed .app-entry .chev, .app.collapsed .app-entry .ext,
.app.collapsed .subnav, .app.collapsed .user-meta { display: none; }
.app.collapsed .app-entry { justify-content: center; padding: 11px 0; }
.app.collapsed .user-btn { justify-content: center; }
/* Mantém o botão de recolher visível e centrado, com a seta a apontar p/ reabrir. */
.app.collapsed .brand { justify-content: center; }
.app.collapsed .collapse-btn { margin-left: 0; }
.app.collapsed .collapse-btn svg { transform: rotate(180deg); }

/* ============ MAIN ============ */
.main { display: flex; flex-direction: column; min-width: 0; height: 100vh; }
/* Barra de topo escondida no desktop (a app tem o seu próprio cabeçalho e a
   sidebar já mostra o que está selecionado). Só aparece em ecrã pequeno, para
   o botão de menu. */
.topbar {
  height: var(--topbar-h); background: var(--topbar-bg);
  border-bottom: 1px solid var(--border); display: none; align-items: center;
  gap: 12px; padding: 0 16px; flex-shrink: 0;
}
.menu-toggle { background: transparent; border: none; cursor: pointer; color: var(--text);
  display: flex; padding: 4px; border-radius: 6px; }
.topbar-title, .topbar-sub { display: none; }
.content { flex: 1; position: relative; background: var(--bg); min-height: 0; }
.frame { width: 100%; height: 100%; border: none; display: block; background: #fff; }

.welcome { position: absolute; inset: 0; overflow: auto; }
.home { max-width: 960px; margin: 0 auto; padding: 46px 28px 40px; }
.home-hero { text-align: center; position: relative; padding: 26px 20px 30px; border-radius: 18px;
  background: radial-gradient(120% 140% at 50% -20%, var(--accent-soft), transparent 60%); }
.home-logo { color: var(--accent); display: flex; justify-content: center; margin-bottom: 10px; }
.home-eyebrow { text-transform: uppercase; letter-spacing: 0.18em; font-size: 11px; color: var(--accent); font-weight: 700; margin-bottom: 8px; }
.home-hero h1 { font-size: 34px; font-weight: 800; color: var(--text); }
.home-hero h1 span { color: var(--accent); }
.home-hero p { max-width: 620px; margin: 10px auto 0; color: var(--muted); font-size: 15px; line-height: 1.6; }
.home-badges { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-top: 18px; }
.home-badges span { font-size: 12px; font-weight: 600; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 999px; padding: 5px 12px; }
.home-section-title { text-transform: uppercase; letter-spacing: 0.5px; font-size: 12px; color: var(--muted);
  font-weight: 700; margin: 26px 4px 12px; }
.home-apps { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.home-card { display: flex; align-items: center; gap: 14px; text-align: left; cursor: pointer; width: 100%;
  background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease; }
.home-card:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(0,0,0,0.10); border-color: var(--accent); }
.home-card-ico { flex-shrink: 0; width: 42px; height: 42px; border-radius: 11px; display: flex; align-items: center;
  justify-content: center; background: var(--accent-soft); color: var(--accent); }
.home-card-body { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.home-card-name { font-weight: 700; font-size: 15px; color: var(--text); }
.home-card-tag { font-size: 12px; color: var(--muted); margin-top: 2px; }
.home-card-ext { color: var(--muted); flex-shrink: 0; display: flex; }
.home-empty { color: var(--muted); padding: 20px 4px; }

/* ============ PAINEL DE GESTÃO ============ */
.admin { position: absolute; inset: 0; overflow-y: auto; padding: 22px 26px; }
.admin-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; }
.admin-head h2 { font-size: 19px; }
.admin-loading, .admin-err { color: #8892a6; padding: 20px 0; }
.admin-err { color: #b3261e; }
.btn-sm { border: 1px solid var(--border); background: #fff; color: var(--text);
  padding: 7px 12px; border-radius: 8px; font-size: 13px; cursor: pointer; }
.btn-sm:hover { background: #f2f5fb; }
.btn-sm.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-sm.primary:hover { filter: brightness(1.05); }
.btn-sm.danger { color: var(--danger); border-color: #f0c9c6; }
.btn-sm.danger:hover { background: #fdecea; }

.ucard { background: #fff; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; margin-bottom: 14px; }
.ucard.collapsible { padding: 0; overflow: hidden; }
.ucard.collapsible .urow { padding: 14px 18px; cursor: pointer; user-select: none; }
.ucard.collapsible .urow:hover { background: var(--surface-2); }
.ucard-chev { flex-shrink: 0; display: flex; color: var(--muted); transition: transform 0.15s ease; }
.ucard.collapsible.open .ucard-chev { transform: rotate(90deg); }
.ucard-details { display: none; padding: 0 18px 16px; }
.ucard.collapsible.open .ucard-details { display: block; }
.urow { display: flex; align-items: center; gap: 13px; }
.urow .user-avatar { background: var(--accent); }
.uinfo { flex: 1; min-width: 0; }
.uname { font-weight: 600; font-size: 15px; }
.umuted { color: #99a1b3; font-weight: 400; font-size: 13px; }
.uhub { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: #556; margin-top: 3px; cursor: pointer; }
.uhint { color: #99a1b3; }
.uactions { display: flex; gap: 8px; flex-shrink: 0; }

.uaccess { margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--border); }
.uaccess-title { font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; color: #8892a6; margin-bottom: 10px; font-weight: 600; }
.agrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; }
.arow { display: flex; align-items: center; gap: 10px; justify-content: space-between;
  background: #f7f9fd; border: 1px solid var(--border); border-radius: 9px; padding: 8px 11px; }
.alabel { font-size: 14px; font-weight: 500; }
.asel { border: 1px solid var(--border); border-radius: 7px; padding: 5px 8px; font-size: 13px; background: #fff; }

.newform { border-color: var(--accent); }
.nugrid { display: grid; grid-template-columns: 1fr 1fr; gap: 13px 18px; margin-bottom: 6px; }
.nufield { display: flex; flex-direction: column; }
.nufield label { font-size: 13px; font-weight: 600; color: #556; margin-bottom: 6px; }
.nufield label .uhint { font-weight: 400; color: #99a1b3; }
.nufield input, .nufield select { padding: 9px 11px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px; background: #fff; }
.nufield input:focus, .nufield select:focus { outline: none; border-color: var(--accent); }
.pwrow { display: flex; gap: 8px; }
.pwrow .pwwrap { flex: 1; }
.pwrow .pwwrap input { width: 100%; padding-right: 34px; }
.pwrow .gen { white-space: nowrap; }
.ck { display: flex; align-items: center; gap: 8px; font-size: 13px; color: #445; margin: 9px 0; cursor: pointer; }
.ck input { width: 16px; height: 16px; }
.ck.disabled { opacity: 0.5; cursor: default; }
.nuactions { display: flex; align-items: center; gap: 12px; margin-top: 12px; }
.uemailrow { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.uemailrow .lbl { font-size: 13px; color: #667; font-weight: 600; width: 46px; flex-shrink: 0; }
.uemailrow input { flex: 1; max-width: 340px; padding: 8px 11px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 13px; background: #fff; color: var(--text); }
.uemailrow input:focus { outline: none; border-color: var(--accent); }
@media (max-width: 700px) { .nugrid { grid-template-columns: 1fr; } }

/* ---- modal ---- */
.modal-ov { position: fixed; inset: 0; background: rgba(15,20,42,0.55); z-index: 200;
  display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal-card { background: #fff; border-radius: 14px; width: 100%; max-width: 460px;
  box-shadow: 0 24px 60px rgba(0,0,0,0.3); overflow: hidden; }
.modal-head { display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid var(--border); }
.modal-head h3 { font-size: 16px; }
.modal-x { background: transparent; border: none; font-size: 16px; cursor: pointer; color: #99a1b3; }
.modal-x:hover { color: var(--text); }
.modal-body { padding: 18px; }

/* ---- tabela de registo de acessos ---- */
.logtbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.logtbl th { text-align: left; padding: 10px 14px; color: var(--muted); font-weight: 600;
  border-bottom: 1px solid var(--border); white-space: nowrap; }
.logtbl td { padding: 9px 14px; border-bottom: 1px solid var(--border); color: var(--text); }
.logtbl tr:last-child td { border-bottom: none; }
.logtbl .ua { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }
.pill { font-size: 11px; font-weight: 700; border-radius: 999px; padding: 2px 9px; }
.pill.ok { background: rgba(52,211,153,0.18); color: #0b8457; }
.pill.bad { background: #fdecea; color: #b3261e; }
.pill.warn { background: #fef3c7; color: #92600a; }
html[data-theme="dark"] .pill.ok { color: #34d399; }
html[data-theme="dark"] .pill.bad { background: rgba(248,113,113,0.16); color: #f87171; }
html[data-theme="dark"] .pill.warn { background: rgba(251,191,36,0.18); color: #fbbf24; }
.ucard.inactive { opacity: 0.72; }

/* ===== Tema escuro — overrides da área de conteúdo ===== */
html[data-theme="dark"] .hauth,
html[data-theme="dark"] .ucard,
html[data-theme="dark"] .modal-card,
html[data-theme="dark"] .asel,
html[data-theme="dark"] .frame { background: var(--surface); }
html[data-theme="dark"] .arow { background: var(--surface-2); }
html[data-theme="dark"] input,
html[data-theme="dark"] select,
html[data-theme="dark"] textarea,
html[data-theme="dark"] input:focus,
html[data-theme="dark"] select:focus { background: var(--input-bg); color: var(--text); border-color: var(--border); }
html[data-theme="dark"] .btn-sm { background: var(--surface); color: var(--text); border-color: var(--border); }
html[data-theme="dark"] .btn-sm:hover { background: var(--surface-2); }
html[data-theme="dark"] .field label,
html[data-theme="dark"] .hauth-form .sub,
html[data-theme="dark"] .nufield label,
html[data-theme="dark"] .uhub,
html[data-theme="dark"] .uemailrow .lbl,
html[data-theme="dark"] .uaccess-title,
html[data-theme="dark"] .admin-loading,
html[data-theme="dark"] .umuted,
html[data-theme="dark"] .uhint,
html[data-theme="dark"] .topbar-sub,
html[data-theme="dark"] .welcome-card,
html[data-theme="dark"] .hauth-foot,
html[data-theme="dark"] .modal-x { color: var(--muted); }
html[data-theme="dark"] .uname,
html[data-theme="dark"] .alabel,
html[data-theme="dark"] .admin-head h2,
html[data-theme="dark"] .topbar-title { color: var(--text); }

@media (max-width: 820px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: fixed; z-index: 50; top: 0; bottom: 0; left: 0; width: var(--sidebar-w);
    transform: translateX(-100%); transition: transform 0.2s ease; }
  .app.mobile-open .sidebar { transform: translateX(0); box-shadow: 0 0 40px rgba(0,0,0,0.4); }
  .topbar { display: flex; }
  .collapse-btn { display: none; }
}