:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --border: #d9dce1;
  --text: #1f2430;
  --muted: #6b7280;
  --accent: #2563eb;
  --ok: #16a34a;
  --warn: #d97706;
  --err: #dc2626;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.5rem;
  background: #111827;
  color: #fff;
}

header .brand { font-weight: 700; letter-spacing: 0.02em; }

nav { display: flex; align-items: center; gap: 1rem; }
nav a { color: #d1d5db; text-decoration: none; }
nav a:hover { color: #fff; }

main { max-width: 960px; margin: 1.5rem auto; padding: 0 1rem; }

h1 { font-size: 1.4rem; }
h2 { font-size: 1.05rem; margin-top: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.25rem;
}

.card.danger { border-color: #fecaca; }

.narrow { max-width: 380px; }

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

code {
  background: #eef0f3;
  padding: 0.1em 0.35em;
  border-radius: 4px;
  font-size: 0.9em;
}

.flash {
  padding: 0.65rem 1rem;
  border-radius: 6px;
  margin-bottom: 1rem;
  border: 1px solid var(--border);
}
.flash.ok { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.flash.error { background: #fef2f2; border-color: #fecaca; color: #991b1b; }

form.row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
form.inline { display: inline; }

input[type="text"],
input[type="password"],
input[type="number"] {
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.95rem;
  min-width: 220px;
}

input[type="password"] { min-width: 220px; }

button {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
}

button:hover { background: #f3f4f6; }

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button.primary:hover { background: #1d4ed8; }

button.danger {
  background: var(--err);
  border-color: var(--err);
  color: #fff;
}
button.danger:hover { background: #b91c1c; }

button.link {
  background: none;
  border: none;
  color: #d1d5db;
  padding: 0;
  font-size: 0.95rem;
}
button.link:hover { color: #fff; background: none; }

table { width: 100%; border-collapse: collapse; }

th, td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th { font-size: 0.8rem; text-transform: uppercase; color: var(--muted); }

td.actions { white-space: nowrap; }

.badge {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: capitalize;
}

.badge.running { background: #dcfce7; color: #166534; }
.badge.stopped { background: #fee2e2; color: #991b1b; }
.badge.absent { background: #e5e7eb; color: #374151; }
.badge.unknown { background: #fef3c7; color: #92400e; }

label.checkbox { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.6rem; }

/* Link con aspetto da bottone (es. "Terminale" in dashboard/istanza) */
a.button {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font-size: 0.9rem;
  text-decoration: none;
  cursor: pointer;
}
a.button:hover { background: #f3f4f6; }

/* Pagina terminale: occupa tutto il viewport sotto l'header */
html.term, html.term body { height: 100%; }
body.term { display: flex; flex-direction: column; }
body.term main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  max-width: none;
  width: 100%;
  margin: 0;
  padding: 0;
}
.term-toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: #111827;
  color: #d1d5db;
  border-bottom: 1px solid #1f2937;
}
.term-toolbar a { color: #93c5fd; text-decoration: none; }
.term-toolbar a:hover { text-decoration: underline; }
.term-toolbar button { margin-left: auto; }
#terminal {
  flex: 1;
  min-height: 0;
  padding: 8px;
  background: #0d1117;
}