:root{
  --ibh-red:#e30613;
  --ibh-red-2:#b8000a;
  --ok:#2ecc71;
  --warn:#f39c12;
  --crit:#e74c3c;
  --belegt:#1576bb;
  --font:"Aptos", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --sidebar-width:300px;
  --topbar-height:76px;
  --page-padding:clamp(18px, 2.2vw, 34px);
  --tile-min-width:260px;
  --tile-min-height:250px;
  --tile-radius:20px;
  --anim:.2s ease;

  --bg:#f4f6fb;
  --surface:#ffffff;
  --surface-2:#f0f2f6;
  --text:#111827;
  --muted:rgba(17,24,39,0.60);
  --divider:rgba(17,24,39,0.10);
  --tile-shadow:0 18px 55px rgba(17,24,39,0.12);
  --topbar:#eef0f4;
  --topbar-border:rgba(17,24,39,0.10);
  --sb-bg:#0f1220;
  --sb-border:rgba(255,255,255,0.10);
  --sb-surface:rgba(255,255,255,0.08);
  --sb-surface-2:rgba(255,255,255,0.06);
  --sb-text:rgba(255,255,255,0.92);
  --sb-muted:rgba(255,255,255,0.70);
  --sb-hover:rgba(255,255,255,0.10);
  --sb-active:rgba(255,255,255,0.14);
  --sb-icon:rgba(255,255,255,0.88);
}

body.dark-mode{
  --bg:#0b1220;
  --surface:#121b2d;
  --surface-2:#192438;
  --text:#edf2ff;
  --muted:rgba(237,242,255,0.72);
  --divider:rgba(148,163,184,0.18);
  --tile-shadow:0 22px 60px rgba(2,8,23,0.45);
  --topbar:#101a2c;
  --topbar-border:rgba(148,163,184,0.14);
  --sb-bg:#070b14;
  --sb-border:rgba(255,255,255,0.09);
  --sb-surface:rgba(255,255,255,0.05);
  --sb-surface-2:rgba(255,255,255,0.04);
  --sb-text:rgba(241,245,249,0.96);
  --sb-muted:rgba(226,232,240,0.70);
  --sb-hover:rgba(255,255,255,0.09);
  --sb-active:rgba(255,255,255,0.12);
  --sb-icon:rgba(248,250,252,0.92);
}

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);overflow:hidden}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}

.app{
  height:100vh;
  display:grid;
  grid-template-columns:var(--sidebar-width) minmax(0,1fr);
  grid-template-rows:var(--topbar-height) minmax(0,1fr);
  grid-template-areas:"sidebar topbar" "sidebar main";
  overflow:hidden;
}

.sidebar{
  grid-area:sidebar;
  color:var(--sb-text);
  background:
    radial-gradient(800px 600px at 0% 0%, rgba(227,6,19,0.38), transparent 65%),
    radial-gradient(900px 700px at 0% 100%, rgba(227,6,19,0.18), transparent 70%),
    linear-gradient(180deg, #0b0f1a 0%, #0a0e18 40%, #070a14 100%);
  border-right:1px solid rgba(227,6,19,0.15);
  display:flex;
  flex-direction:column;
  padding:16px 14px 14px;
  gap:14px;
  position:sticky;
  top:0;
  align-self:start;
  height:100vh;
  overflow:auto;
}
body.dark-mode .sidebar{
  background:
    radial-gradient(800px 600px at 0% 0%, rgba(227,6,19,0.24), transparent 65%),
    radial-gradient(900px 700px at 0% 100%, rgba(21,118,187,0.14), transparent 70%),
    linear-gradient(180deg, #060913 0%, #09101d 42%, #0b1424 100%);
  border-right:1px solid rgba(148,163,184,0.14);
}
.sidebar::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg, rgba(227,6,19,0.25) 0px, transparent 120px);
  mix-blend-mode:screen;opacity:.35;
}
.brand,.nav-card,.sidebar-footer{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);z-index:1}
.brand{
  padding:10px 12px 10px 14px;
  border-radius:14px;background:var(--sb-surface);border:1px solid var(--sb-border);margin-left:6px;
}
.brand-row{display:flex;align-items:center;gap:12px}
.brand-stack{display:flex;flex-direction:column;gap:10px}
.hamburger,.nav-ico,.avatar{display:grid;place-items:center;border:1px solid var(--sb-border);background:var(--sb-surface-2);color:var(--sb-icon);flex:0 0 auto}
.hamburger{width:40px;height:40px;border-radius:12px;cursor:pointer;padding:0}
.brand h1{margin:0;font-size:16px;letter-spacing:.08em;font-weight:650}
.nav{margin-left:6px;display:flex;flex-direction:column;gap:10px;z-index:1}
.nav-card{background:var(--sb-surface);border:1px solid var(--sb-border);border-radius:16px;padding:10px}
.nav-title,.nav-subpanel__label{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--sb-muted);font-weight:650}
.nav-title{padding:6px 10px 10px}
.nav-item,.nav-subitem,.sidebar-button{
  display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:10px;border:0;border-radius:14px;
  background:transparent;color:inherit;text-align:left;cursor:pointer;user-select:none;transition:background var(--anim), transform var(--anim);position:relative;
}
.nav-item:hover,.nav-subitem:hover,.sidebar-button:hover{background:var(--sb-hover);transform:translateY(-1px)}
.nav-item.active,.nav-subitem.active,.sidebar-button.active{background:var(--sb-active)}
.nav-item.active::before,.nav-subitem.active::before,.sidebar-button.active::before{
  content:"";position:absolute;left:-10px;top:10px;bottom:10px;width:3px;border-radius:999px;background:var(--ibh-red);box-shadow:0 0 0 4px rgba(227,6,19,0.14)
}
.nav-left{display:flex;align-items:center;gap:12px;min-width:0}
.nav-ico{width:30px;height:30px;border-radius:12px;font-weight:600}
.nav-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-weight:450}
.chev{opacity:.8;color:var(--sb-muted);transition:transform .18s ease}
.nav-toggle[aria-expanded="false"] .chev{transform:rotate(-90deg)}
.nav-sub{margin-top:6px;margin-left:6px;padding-left:10px;border-left:1px solid rgba(255,255,255,0.10);display:flex;flex-direction:column;gap:8px;overflow:hidden;max-height:0;opacity:0;transition:max-height .22s ease, opacity .18s ease}
.nav-sub.is-open{opacity:1}
body.tools-open .brand-sub{max-height:none;opacity:1;overflow:visible}
.brand-sub{margin-top:0;margin-left:0;padding-left:0;border-left:0}
.brand-sub .nav-item.active::before{left:-4px}
.sidebar-footer{margin-top:auto;margin-left:6px;padding:10px 12px;border-radius:16px;background:var(--sb-surface);border:1px solid var(--sb-border);display:flex;align-items:flex-end;justify-content:space-between;gap:12px}
.sidebar-footer-main{display:flex;flex-direction:column;gap:12px;min-width:0;flex:1}
.sidebar-meta{display:flex;flex-direction:column;gap:4px}
.sidebar-meta strong{font-size:14px}
.sidebar-meta span{font-size:12px;color:var(--sb-muted)}
.avatar{width:28px;height:28px;border-radius:999px;color:#fff;font-weight:600}
.theme-toggle{padding-inline:12px}
.theme-toggle .nav-label{font-weight:550}
.logout-link{width:44px;min-width:44px;justify-content:center;align-self:stretch}

.topbar{grid-area:topbar;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px var(--page-padding);background:var(--topbar);border-bottom:1px solid var(--topbar-border);position:relative;z-index:2}
.topbar-copy h1{margin:0;font-size:1.5rem}
.subtitle{color:var(--muted);margin:4px 0 0 0}
.topbar-brand{display:flex;flex-direction:column;align-items:flex-end;gap:6px;margin-left:auto}
.topbar-logo{height:42px;max-width:100%;object-fit:contain;display:block}

.main{grid-area:main;padding:28px var(--page-padding);overflow:auto;min-height:0}
.toolbar{display:flex;justify-content:flex-end;gap:12px;margin-bottom:18px}
.button{padding:10px 16px;border:0;border-radius:10px;background:var(--ibh-red);color:#fff;cursor:pointer}
.button:hover{background:var(--ibh-red-2)}
.button.secondary{background:var(--surface);color:var(--text);border:1px solid var(--divider)}

.tiles-grid{display:grid;gap:26px;padding-top:14px;grid-template-columns:repeat(auto-fit, minmax(min(100%, var(--tile-min-width)), 1fr));align-items:stretch}
.tile{
  position:relative;min-width:0;min-height:var(--tile-min-height);border-radius:var(--tile-radius);background:var(--surface);
  border:1px solid var(--divider);box-shadow:var(--tile-shadow);padding:24px 24px 20px 26px;overflow:hidden;display:flex;flex-direction:column;gap:18px;justify-content:space-between
}
.tile::before{content:"";position:absolute;left:0;top:0;bottom:0;width:8px;border-radius:var(--tile-radius) 0 0 var(--tile-radius);background:var(--ok)}
body.dark-mode .tile{background:linear-gradient(180deg, color-mix(in srgb, var(--surface) 94%, white 6%), color-mix(in srgb, var(--surface-2) 88%, black 12%))}
.tile[data-status="warn"]::before{background:var(--warn)}
.tile[data-status="crit"]::before{background:var(--crit)}
.tile[data-status="ok"]::before{background:var(--ok)}
.tile[data-status="belegt"]::before{background:var(--belegt)}
.tile-head{display:flex;flex-direction:column;gap:12px;min-width:0}
.room{font-size:clamp(12px, 2.4cqi, 14px);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);font-weight:600;margin:0;line-height:1.35;overflow-wrap:anywhere}
.metric{font-size:clamp(18px, 5cqi, 22px);font-weight:650;margin:0;line-height:1.2;overflow-wrap:anywhere}
.divider{height:1px;background:var(--divider);margin:0}
.value-row{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap;min-width:0;flex:1}
.value{font-size:clamp(3.4rem, 22cqi, 6.2rem);font-weight:700;letter-spacing:-0.05em;line-height:.88;margin:0;min-width:0;overflow-wrap:anywhere;word-break:break-word}
.unit{font-size:clamp(1.1rem, 6cqi, 1.75rem);font-weight:650;color:var(--muted);line-height:1.05;overflow-wrap:anywhere;padding-bottom:0.35em}
.footer{display:flex;align-items:flex-start;gap:10px;color:var(--muted);font-weight:700;min-width:0}
.status-text{min-width:0;line-height:1.35;overflow-wrap:anywhere;word-break:break-word}
.tile[data-status="ok"] .status-text{color:var(--ok)}
.tile[data-status="warn"] .status-text{color:var(--warn)}
.tile[data-status="crit"] .status-text{color:var(--crit)}
.tile[data-status="belegt"] .status-text{color:var(--belegt)}
.dot{width:12px;height:12px;margin-top:3px;border-radius:999px;background:var(--ok);box-shadow:0 0 0 4px color-mix(in srgb, var(--ok) 18%, transparent);flex:0 0 auto}
.tile[data-status="warn"] .dot{background:var(--warn);box-shadow:0 0 0 4px color-mix(in srgb, var(--warn) 18%, transparent)}
.tile[data-status="crit"] .dot{background:var(--crit);box-shadow:0 0 0 4px color-mix(in srgb, var(--crit) 18%, transparent)}
.tile[data-status="belegt"] .dot{background:var(--belegt);box-shadow:0 0 0 4px color-mix(in srgb, var(--belegt) 18%, transparent)}
.tile{cursor:pointer}

.empty-state,.panel{background:var(--surface);border:1px solid var(--divider);border-radius:16px}
.empty-state{padding:24px;text-align:center;color:var(--muted)}
.hidden{display:none}
.panel{padding:16px;overflow-x:auto;max-width:100%}
.detail-overlay{
  position:fixed;inset:0;z-index:1000;background:rgba(15,23,42,0.38);
  display:flex;align-items:center;justify-content:center;padding:24px
}
body.dark-mode .detail-overlay{background:rgba(2,6,23,0.66)}
.detail-overlay.hidden{display:none}
.detail-dialog{
  width:min(100%, 760px);min-height:auto;max-height:min(100vh - 48px, 760px);
  overflow:auto;cursor:default;padding:30px 30px 28px 32px
}
.detail-close{
  position:absolute;top:20px;right:20px;border:1px solid var(--divider);background:var(--surface-2);
  color:var(--text);border-radius:999px;width:36px;height:36px;font-size:18px;line-height:1;cursor:pointer
}
.detail-grid{
  display:grid;grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));gap:14px;margin-top:8px
}
.detail-item{
  background:linear-gradient(180deg, color-mix(in srgb, var(--surface-2) 88%, white 12%), var(--surface-2));
  border:1px solid var(--divider);border-radius:16px;padding:16px 18px;box-shadow:0 10px 24px rgba(15,23,42,0.06)
}
.detail-item .nav-title{color:var(--muted);font-size:12px;letter-spacing:.08em;text-transform:uppercase;margin-bottom:8px}
.detail-value{font-size:17px;font-weight:600;line-height:1.5;color:var(--text);overflow-wrap:anywhere}
.detail-item--hero{
  grid-column:span 2;
  background:
    radial-gradient(circle at top right, rgba(227,6,19,0.10), transparent 36%),
    linear-gradient(180deg, color-mix(in srgb, var(--surface) 72%, white 28%), color-mix(in srgb, var(--surface-2) 92%, white 8%));
  padding:20px 22px
}
.detail-item--hero .detail-value{font-size:clamp(2rem, 4vw, 3rem);font-weight:700;letter-spacing:-0.04em;line-height:1}
.detail-item--wide{grid-column:span 2}
.detail-item--accent{
  background:linear-gradient(180deg, rgba(21,118,187,0.10), rgba(21,118,187,0.04));
  border-color:color-mix(in srgb, var(--accent) 26%, var(--divider))
}
body.dark-mode .detail-item{
  box-shadow:0 14px 28px rgba(2,8,23,0.28)
}
.config-table{width:100%;border-collapse:collapse}
.config-table th,.config-table td{padding:12px;border-bottom:1px solid var(--divider);text-align:left;vertical-align:middle}
select,input{width:100%;padding:10px 12px;background:var(--surface-2);color:var(--text);border:1px solid var(--divider);border-radius:10px}
.status{margin-bottom:16px;padding:12px;border-radius:10px;display:none}
.status.success,.status.error{display:block}
.status.success{background:rgba(22,101,52,0.12);border:1px solid var(--ok)}
.status.error{background:rgba(153,27,27,0.12);border:1px solid var(--crit)}

.room-group + .room-group{margin-top:8px}
.room-group .nav-sub{margin-top:6px}
@media (max-width:1080px){:root{--sidebar-width:260px}.tiles-grid{gap:20px}}
@media (max-width:900px){
  body{overflow:auto}
  .app{grid-template-columns:1fr;grid-template-rows:auto auto minmax(0,1fr);grid-template-areas:"topbar" "sidebar" "main"}
  .sidebar{
    border-right:0;border-bottom:1px solid rgba(227,6,19,0.15);position:sticky;top:0;align-self:stretch;height:auto;
    max-height:76px;overflow:hidden;z-index:3;transition:max-height .24s ease, box-shadow .24s ease
  }
  body.mobile-sidebar-open .sidebar{
    max-height:min(calc(100vh - var(--topbar-height) - 12px), 720px);
    overflow:auto;
    box-shadow:0 16px 40px rgba(15,23,42,0.18)
  }
  .brand{margin-left:0}
  .nav,.sidebar-footer{margin-left:0}
  .nav,.sidebar-footer{
    opacity:0;transform:translateY(-8px);pointer-events:none;transition:opacity .18s ease, transform .18s ease
  }
  body.mobile-sidebar-open .nav,
  body.mobile-sidebar-open .sidebar-footer{
    opacity:1;transform:translateY(0);pointer-events:auto
  }
  .topbar-brand{align-items:flex-start;margin-left:0}
  .main{padding-top:22px}
  .sidebar-footer{margin-left:0}
}
@media (max-width:520px){
  :root{--tile-min-width:100%;--tile-min-height:220px}
  .topbar,.main{padding-inline:18px}
  .brand,.nav,.sidebar-footer{margin-left:0}
  .detail-overlay{padding:16px}
  .detail-dialog{padding:24px 20px 20px}
  .detail-item--hero,.detail-item--wide{grid-column:span 1}
}

/* ── Login page ────────────────────────────────────────── */
.login-body{
  display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:
    radial-gradient(800px 600px at 30% 20%, rgba(227,6,19,0.12), transparent 65%),
    radial-gradient(600px 400px at 70% 80%, rgba(21,118,187,0.08), transparent 60%),
    var(--bg);
}
.login-wrapper{width:100%;max-width:420px;padding:24px}
.login-card{
  background:var(--surface);border:1px solid var(--divider);border-radius:20px;
  padding:40px 36px;box-shadow:0 24px 64px rgba(17,24,39,0.10);
}
.login-brand{text-align:center;margin-bottom:28px}
.login-logo{height:48px;margin:0 auto 12px}
.login-brand h1{margin:0;font-size:1.4rem;letter-spacing:.08em;font-weight:700}
.login-subtitle{color:var(--muted);margin:6px 0 0;font-size:.9rem}
.login-card .form-group{margin-bottom:18px}
.login-card label{display:block;margin-bottom:6px;font-weight:600;font-size:.85rem;color:var(--muted)}
.login-card input[type="text"],
.login-card input[type="password"]{width:100%;padding:12px 14px;font-size:1rem}
.login-button{width:100%;padding:14px;font-size:1rem;font-weight:600;margin-top:6px}

.flash{padding:12px;border-radius:10px;margin-bottom:18px;font-size:.9rem}
.flash-error{background:rgba(153,27,27,0.12);border:1px solid var(--crit);color:var(--crit)}
.flash-info{background:rgba(21,118,187,0.10);border:1px solid var(--belegt);color:var(--belegt)}
.flash-success{background:rgba(22,101,52,0.12);border:1px solid var(--ok);color:#166534}

/* ── Sidebar footer with logout ────────────────────────── */
.sidebar-footer{display:flex;align-items:center;justify-content:space-between;gap:12px}
.logout-link{
  flex:0 0 auto;width:34px;height:34px;display:grid;place-items:center;
  border-radius:10px;font-size:1.1rem;cursor:pointer;
  background:var(--sb-surface-2);border:1px solid var(--sb-border);color:var(--sb-muted);
  transition:background var(--anim);text-decoration:none;
}
.logout-link:hover{background:rgba(227,6,19,0.25);color:#fff}

/* ── Admin users page ──────────────────────────────────── */
.form-row{display:flex;flex-wrap:wrap;gap:14px;align-items:flex-end}
.form-row .form-group{flex:1 1 180px;min-width:0}
.form-group{margin-bottom:0}
.form-group label{display:block;margin-bottom:6px;font-weight:600;font-size:.85rem;color:var(--muted)}
.form-actions{display:flex;gap:10px;align-items:flex-end;padding-bottom:1px}

.action-cell{white-space:nowrap}
.button.small{padding:6px 12px;font-size:.85rem;border-radius:8px}
.button.danger{background:#b91c1c;color:#fff}
.button.danger:hover{background:#991b1b}

.toggle-label{display:flex;align-items:center;gap:8px;cursor:pointer}
.toggle-text{font-size:.9rem}

.role-select{width:auto;min-width:100px}
select{appearance:auto}