:root {
  --bg: #0f1620;
  --bg-raised: #16202c;
  --bg-input: #0c131c;
  --line: #24313f;
  --line-soft: #1c2734;
  --text: #e6edf5;
  --text-dim: #8fa3b8;
  --text-faint: #5f7386;
  --accent: #3ba9f5;
  --accent-dark: #1d84cc;
  --ok: #35c77a;
  --warn: #f0b23c;
  --bad: #ef5b62;
  --radius: 10px;
  --radius-sm: 7px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

/* The browser's own `[hidden] { display: none }` is a plain element rule, so any
   class below that sets `display` beats it — a hidden modal backdrop would still
   be a full-screen layer swallowing every click on the page. This makes `hidden`
   mean hidden, everywhere, whatever else is declared. */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0; }
a { color: var(--accent); }

/* ------------------------------------------------------------------ */
/* Login                                                               */
/* ------------------------------------------------------------------ */
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(1000px 600px at 50% -10%, #1b2c3e 0%, var(--bg) 62%);
}

.login-card {
  width: 340px;
  padding: 30px 28px 26px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
}

.login-logo { color: var(--accent); margin-bottom: 12px; }
.login-card h1 { font-size: 19px; }
.login-card .muted { color: var(--text-dim); margin: 4px 0 20px; font-size: 13px; }
.login-card label { display: block; font-size: 12px; color: var(--text-dim); margin: 14px 0 5px; }

/* ------------------------------------------------------------------ */
/* Form controls                                                       */
/* ------------------------------------------------------------------ */
input[type="text"],
input[type="password"],
input[type="number"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 9px 11px;
  background: var(--bg-input);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  font: inherit;
  outline: none;
  transition: border-color 0.12s, box-shadow 0.12s;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 169, 245, 0.16);
}

input::placeholder, textarea::placeholder { color: var(--text-faint); }
textarea { resize: vertical; }

.btn {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s, border-color 0.12s, opacity 0.12s;
}
.btn:hover { background: rgba(255, 255, 255, 0.05); }
.btn:disabled { opacity: 0.5; cursor: default; }
.btn-primary { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-ghost { border-color: transparent; color: var(--text-dim); }
.btn-ghost:hover { color: var(--text); }
.btn-danger { border-color: #5a2b2f; color: #f6989c; }
.btn-danger:hover { background: rgba(239, 91, 98, 0.12); }
.btn-block { display: block; width: 100%; margin-top: 22px; padding: 10px; }
.btn-sm { padding: 5px 10px; font-size: 12.5px; }

.icon-btn {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 0 4px;
}
.icon-btn:hover { color: var(--text); }

.error {
  margin-top: 14px;
  padding: 9px 12px;
  background: rgba(239, 91, 98, 0.12);
  border: 1px solid rgba(239, 91, 98, 0.35);
  border-radius: var(--radius-sm);
  color: #ffb9bc;
  font-size: 13px;
}

.hint { font-size: 12px; color: var(--text-faint); margin-top: 5px; }
.hint.bad { color: #f6989c; }
.hint.good { color: #82dcaa; }
.req { color: var(--bad); }

/* ------------------------------------------------------------------ */
/* Top bar                                                             */
/* ------------------------------------------------------------------ */
.topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 18px;
  height: 56px;
  background: var(--bg-raised);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand { display: flex; align-items: center; gap: 9px; font-weight: 600; color: var(--text); }
.brand svg { color: var(--accent); }

.server-chips { display: flex; gap: 8px; flex: 1; overflow: hidden; flex-wrap: wrap; max-height: 46px; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  background: var(--bg-input);
  border: 1px solid var(--line-soft);
  border-radius: 20px;
  font-size: 12px;
  color: var(--text-dim);
  white-space: nowrap;
}
.chip b { color: var(--text); font-weight: 500; font-family: var(--mono); font-size: 11.5px; }
.chip.bad { border-color: rgba(239, 91, 98, 0.45); color: #f6989c; }
.chip.warn { border-color: rgba(240, 178, 60, 0.45); color: #f3cd8a; }

.topbar-actions { display: flex; gap: 4px; }

.banner {
  padding: 10px 18px;
  font-size: 13px;
  background: rgba(240, 178, 60, 0.12);
  border-bottom: 1px solid rgba(240, 178, 60, 0.3);
  color: #f3cd8a;
}
.banner.ok { background: rgba(53, 199, 122, 0.12); border-color: rgba(53, 199, 122, 0.3); color: #92e3b6; }
.banner.bad { background: rgba(239, 91, 98, 0.12); border-color: rgba(239, 91, 98, 0.3); color: #ffb9bc; }

/* ------------------------------------------------------------------ */
/* Layout                                                              */
/* ------------------------------------------------------------------ */
.layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 0;
  height: calc(100vh - 56px);
}

.pane { overflow-y: auto; }
.pane-list { border-right: 1px solid var(--line); }
.pane-detail { padding: 22px 26px 60px; }

.pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 16px 16px 12px;
  position: sticky;
  top: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--line-soft);
  z-index: 5;
  flex-wrap: wrap;
}
.pane-head h2 { font-size: 15px; }
.pane-head-actions { display: flex; gap: 8px; align-items: center; }
.pane-head-actions input[type="search"] { width: 120px; padding: 6px 9px; font-size: 13px; }
.count { color: var(--text-faint); font-weight: 400; font-size: 13px; }

/* ------------------------------------------------------------------ */
/* Site list                                                           */
/* ------------------------------------------------------------------ */
.site-list { padding: 8px; }

.site-card {
  padding: 11px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  margin-bottom: 4px;
  transition: background 0.1s, border-color 0.1s;
}
.site-card:hover { background: var(--bg-raised); }
.site-card.active { background: var(--bg-raised); border-color: var(--accent-dark); }

.site-card-top { display: flex; align-items: center; gap: 8px; }
.site-card-name { font-weight: 600; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.site-card-meta { color: var(--text-faint); font-size: 12px; margin-top: 3px; font-family: var(--mono); }
.site-card-client { color: var(--text-dim); font-size: 12px; }

.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-faint);
  flex: 0 0 auto;
}
.dot.on { background: var(--ok); box-shadow: 0 0 0 3px rgba(53, 199, 122, 0.16); }
.dot.off { background: #46586b; }
.dot.missing { background: var(--warn); box-shadow: 0 0 0 3px rgba(240, 178, 60, 0.14); }
.dot.disabled { background: transparent; border: 1.5px solid #46586b; }

.empty {
  padding: 24px 16px;
  color: var(--text-faint);
  font-size: 13px;
  text-align: center;
}
.empty.tall { padding-top: 80px; }
.empty h3 { color: var(--text-dim); font-size: 15px; margin-bottom: 6px; }

/* ------------------------------------------------------------------ */
/* Detail                                                              */
/* ------------------------------------------------------------------ */
.detail-head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 4px; flex-wrap: wrap; }
.detail-head h2 { font-size: 21px; }
.detail-sub { color: var(--text-dim); font-size: 13px; margin-bottom: 20px; }
.detail-actions { margin-left: auto; display: flex; gap: 6px; flex-wrap: wrap; }

.card {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 16px;
}
.card > h3 {
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.kv { display: grid; grid-template-columns: 170px 1fr; gap: 7px 14px; font-size: 13px; }
.kv dt { color: var(--text-dim); }
.kv dd { margin: 0; font-family: var(--mono); font-size: 12.5px; word-break: break-all; }

pre.code {
  margin: 0;
  padding: 13px 15px;
  background: var(--bg-input);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: #cfe0f0;
  overflow-x: auto;
  white-space: pre;
}

.card-toolbar { display: flex; gap: 8px; margin-bottom: 11px; flex-wrap: wrap; align-items: center; }
.spacer { flex: 1; }

.qr-wrap { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.qr-wrap img { background: #fff; padding: 8px; border-radius: var(--radius-sm); width: 200px; height: 200px; }

table.grid { width: 100%; border-collapse: collapse; font-size: 13px; }
table.grid th {
  text-align: left;
  font-weight: 500;
  color: var(--text-dim);
  font-size: 12px;
  padding: 0 10px 8px 0;
  border-bottom: 1px solid var(--line-soft);
}
table.grid td { padding: 9px 10px 9px 0; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }
table.grid tr:last-child td { border-bottom: none; }
table.grid td.mono { font-family: var(--mono); font-size: 12.5px; }
table.grid td.actions { text-align: right; white-space: nowrap; }

.badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 20px;
  font-size: 11.5px;
  background: var(--bg-input);
  border: 1px solid var(--line-soft);
  color: var(--text-dim);
}
.badge.ok { color: #92e3b6; border-color: rgba(53, 199, 122, 0.35); }
.badge.warn { color: #f3cd8a; border-color: rgba(240, 178, 60, 0.35); }
.badge.bad { color: #f6989c; border-color: rgba(239, 91, 98, 0.35); }

.note {
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: rgba(240, 178, 60, 0.1);
  border: 1px solid rgba(240, 178, 60, 0.28);
  color: #f3cd8a;
  font-size: 12.5px;
  margin-bottom: 12px;
}

.inline-form { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; margin-top: 14px; }
.inline-form .field { margin: 0; }
.inline-form input { width: 100%; }
.w-sm { width: 110px; }
.w-md { width: 160px; }

/* ------------------------------------------------------------------ */
/* Modal                                                               */
/* ------------------------------------------------------------------ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(6, 10, 15, 0.72);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 60px 20px;
  z-index: 50;
  overflow-y: auto;
}

.modal {
  width: 100%;
  max-width: 640px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.modal-head h2 { font-size: 16px; }
.modal-body { padding: 20px; }
.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding-top: 18px;
  margin-top: 4px;
  border-top: 1px solid var(--line-soft);
}

.field { margin-bottom: 15px; }
.field > label { display: block; font-size: 12px; color: var(--text-dim); margin-bottom: 5px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.checkline { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--text); margin-bottom: 8px; }
.checkline input { width: auto; }

.advanced { margin-bottom: 6px; }
.advanced summary {
  cursor: pointer;
  color: var(--text-dim);
  font-size: 13px;
  padding: 6px 0 12px;
  user-select: none;
}
.advanced summary:hover { color: var(--text); }

/* ------------------------------------------------------------------ */
/* Toast                                                               */
/* ------------------------------------------------------------------ */
.toast-stack { position: fixed; right: 18px; bottom: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 90; }
.toast {
  padding: 11px 15px;
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  font-size: 13px;
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.45);
  max-width: 380px;
  animation: slide-in 0.16s ease-out;
}
.toast.ok { border-left-color: var(--ok); }
.toast.bad { border-left-color: var(--bad); }

@keyframes slide-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; height: auto; }
  .pane-list { border-right: none; border-bottom: 1px solid var(--line); }
  .server-chips { display: none; }
  .row { grid-template-columns: 1fr; }
}