:root {
  /* Nen sang, chu toi mau - de doc hon nen toi truoc day */
  --bg: #f3f5fa;
  --bg-elev: #ffffff;
  --bg-elev-2: #eef1f8;
  --border: #dfe3ee;
  --text: #1a2033;
  --text-dim: #667085;
  --accent: #2f6fed;
  --accent-dark: #1d4ed8;
  --accent-tint: #e8effe;
  --green: #0e9f6e;
  --green-tint: #e5f8f1;
  --red: #e02424;
  --red-tint: #fdeced;
  --yellow: #b54708;
  --yellow-tint: #fef3e0;
  --radius: 10px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06);
  --shadow-md: 0 2px 8px rgba(16, 24, 40, .08);
  --shadow-lg: 0 8px 24px rgba(16, 24, 40, .12);
}

* { box-sizing: border-box; }

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; color: var(--accent-dark); }

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar .brand { font-weight: 700; font-size: 16px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.topbar .brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px var(--green-tint); }
.topbar nav { display: flex; gap: 6px; align-items: center; }
.topbar nav a { color: var(--text-dim); font-size: 13.5px; font-weight: 600; padding: 7px 10px; border-radius: 7px; transition: background .15s, color .15s; }
.topbar nav a.active { color: var(--accent); background: var(--accent-tint); }
.topbar nav a:hover { color: var(--text); text-decoration: none; background: var(--bg-elev-2); }
.topbar nav a.active:hover { color: var(--accent); background: var(--accent-tint); }
.topbar .user { display: flex; align-items: center; gap: 10px; font-size: 13px; color: var(--text-dim); }

.role-badge { padding: 2px 9px; border-radius: 20px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.role-admin { background: var(--red-tint); color: var(--red); }
.role-operator { background: var(--accent-tint); color: var(--accent-dark); }
.role-viewer { background: var(--bg-elev-2); color: var(--text-dim); }

.container { max-width: 1180px; margin: 0 auto; padding: 28px 24px 60px; }
h1 { font-size: 21px; margin: 0 0 18px; color: var(--text); font-weight: 700; }
h2 { font-size: 15px; margin: 0 0 12px; color: var(--text); }
h3 { font-size: 12.5px; margin: 0 0 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .05em; font-weight: 700; }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 18px 20px;
  margin-bottom: 18px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

.server-card { display: block; color: var(--text); transition: border-color .15s, box-shadow .15s, transform .15s; }
.server-card:hover { border-color: var(--accent); text-decoration: none; box-shadow: var(--shadow-md); transform: translateY(-2px); }
.server-card .row1 { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; gap: 10px; }
.server-card .name { font-weight: 700; font-size: 15px; }
.server-card .env { font-size: 11px; color: var(--text-dim); text-transform: uppercase; letter-spacing: .03em; font-weight: 600; }
.server-card .desc { font-size: 12.5px; color: var(--text-dim); margin-top: 4px; }

.status-pill { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; padding: 3px 10px; border-radius: 20px; font-weight: 700; white-space: nowrap; }
.status-up { background: var(--green-tint); color: var(--green); }
.status-down { background: var(--red-tint); color: var(--red); }
.status-pill .dot { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 10px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { color: var(--text-dim); font-weight: 700; font-size: 11px; text-transform: uppercase; letter-spacing: .04em; background: var(--bg-elev-2); }
th:first-child { border-top-left-radius: 8px; }
th:last-child { border-top-right-radius: 8px; }
tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--bg-elev-2); }

button, .btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent); color: #fff; border: none;
  padding: 9px 15px; border-radius: 7px; font-size: 13px; font-weight: 700;
  cursor: pointer; transition: background .15s, box-shadow .15s;
  box-shadow: var(--shadow-sm);
}
button:hover, .btn:hover { background: var(--accent-dark); text-decoration: none; }
button:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; }
.btn-danger { background: var(--red); }
.btn-danger:hover { background: #b91c1c; }
.btn-secondary { background: var(--bg-elev); color: var(--text); border: 1px solid var(--border); box-shadow: none; }
.btn-secondary:hover { background: var(--bg-elev-2); }
.btn-sm { padding: 5px 11px; font-size: 12px; }

input[type=text], input[type=password], input[type=number], select, textarea {
  width: 100%; background: var(--bg-elev); color: var(--text);
  border: 1px solid var(--border); border-radius: 7px;
  padding: 9px 11px; font-size: 13.5px; font-family: inherit;
  transition: border-color .15s, box-shadow .15s;
}
textarea { font-family: "SF Mono", Consolas, Monaco, monospace; font-size: 12.5px; }
label { display: block; font-size: 12.5px; color: var(--text-dim); font-weight: 600; margin: 12px 0 5px; }
.field-hint { font-size: 11.5px; color: var(--text-dim); margin-top: 4px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; }
.tab-btn { background: none; border: none; box-shadow: none; color: var(--text-dim); padding: 10px 16px; font-size: 13.5px; font-weight: 700; border-bottom: 2px solid transparent; border-radius: 0; }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-btn:hover { background: none; color: var(--text); }
.tab-btn.active:hover { color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

pre.log-view {
  background: #1a2033; color: #e7eaf3; border: 1px solid var(--border); border-radius: 8px;
  padding: 14px; font-size: 12px; line-height: 1.6; max-height: 560px; overflow: auto;
  white-space: pre-wrap; word-break: break-all; font-family: "SF Mono", Consolas, Monaco, monospace;
}

.alert { padding: 11px 14px; border-radius: 8px; font-size: 13px; margin-bottom: 14px; font-weight: 500; }
.alert-error { background: var(--red-tint); color: #9b1c1c; border: 1px solid #f7c2c2; }
.alert-success { background: var(--green-tint); color: #0a6b4b; border: 1px solid #b8ecd9; }
.alert-info { background: var(--accent-tint); color: var(--accent-dark); border: 1px solid #c3d7fc; }

.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.muted { color: var(--text-dim); }
.kv { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; font-size: 13px; }
.kv div:nth-child(odd) { color: var(--text-dim); font-weight: 600; }
code { background: var(--bg-elev-2); color: #b5313e; padding: 1px 6px; border-radius: 5px; font-size: 12px; font-family: "SF Mono", Consolas, Monaco, monospace; }

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: linear-gradient(180deg, #eef2fb, var(--bg)); }
.login-box { width: 360px; box-shadow: var(--shadow-lg); }
.login-box h1 { text-align: center; }

/* ===== Page header, empty state, tag/chip, checkbox-card (phan quyen server) ===== */
.page-header { margin-bottom: 22px; }
.page-header h1 { margin-bottom: 6px; }
.page-header .muted { margin: 0; font-size: 13px; max-width: 720px; line-height: 1.6; }

.empty-state { text-align: center; padding: 44px 20px; }
.empty-state p { margin: 0 0 6px; font-size: 14px; }
.empty-state p:last-child { margin-bottom: 0; }
.empty-state p:first-child { font-weight: 700; color: var(--text); font-size: 15px; }

.tag {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--bg-elev-2); color: var(--text-dim);
  border: 1px solid var(--border); border-radius: 20px;
  padding: 3px 10px; font-size: 11.5px; font-weight: 700;
}
.tag-accent { background: var(--accent-tint); color: var(--accent-dark); border-color: #c3d7fc; }
.tag-warn { background: var(--yellow-tint); color: var(--yellow); border-color: #fadfa8; }
.tag-green { background: var(--green-tint); color: var(--green); border-color: #b8ecd9; }

.section-sub {
  font-size: 11.5px; font-weight: 700; text-transform: uppercase; letter-spacing: .05em;
  color: var(--text-dim); margin: 18px 0 10px; display: flex; align-items: center; gap: 8px;
}
.section-sub:first-child { margin-top: 2px; }
.section-sub::after { content: ""; flex: 1; height: 1px; background: var(--border); }

.check-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 10px; margin-top: 4px; }
.server-check {
  display: flex; align-items: flex-start; gap: 10px;
  background: var(--bg-elev); border: 1px solid var(--border); border-radius: 9px;
  padding: 11px 12px; cursor: pointer; transition: border-color .15s, background .15s, box-shadow .15s;
}
.server-check:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.server-check input[type=checkbox] { width: 17px; height: 17px; margin-top: 2px; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; }
.server-check:has(input:checked) { border-color: var(--accent); background: var(--accent-tint); }
.server-check-name { font-weight: 700; font-size: 13.5px; color: var(--text); }
.server-check-env { font-size: 11.5px; color: var(--text-dim); margin-top: 2px; }

.perm-summary {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--accent-tint); border: 1px solid #c3d7fc; border-radius: 9px;
  padding: 10px 14px; margin-bottom: 16px; font-size: 13px; color: var(--accent-dark); font-weight: 600;
}

input[type=text]:focus, input[type=password]:focus, input[type=number]:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-tint);
}
button:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

@media (max-width: 640px) {
  .topbar { flex-wrap: wrap; gap: 10px; }
  .container { padding: 18px 14px 40px; }
  .kv { grid-template-columns: 110px 1fr; }
  .check-grid { grid-template-columns: 1fr; }
}