:root {
  --bg: #10141b;
  --panel: #182029;
  --panel-2: #1f2933;
  --text: #e8eef5;
  --muted: #93a3b5;
  --accent: #4aa3ff;
  --ok: #34d399;
  --warn: #fbbf24;
  --bad: #f87171;
  --border: #2a3644;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #0c1117; padding: 1px 5px; border-radius: 4px; font-size: 13px; }

.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 22px; background: var(--panel); border-bottom: 1px solid var(--border);
}
.brand a { font-weight: 700; font-size: 17px; color: var(--text); }
.brand .note { color: var(--muted); font-size: 13px; margin-left: 10px; }
.topbar nav { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.who { color: var(--muted); }

main { padding: 22px; max-width: 1500px; margin: 0 auto; }
footer {
  display: flex; justify-content: space-between; color: var(--muted);
  border-top: 1px solid var(--border); padding: 14px 22px; margin-top: 30px; font-size: 13px;
}

h1 { font-size: 22px; margin: 0 0 6px; }
h2 { font-size: 16px; margin: 0 0 10px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 18px; margin-bottom: 18px;
}
.card.notice { border-color: var(--accent); }
.card.error { border-color: var(--bad); }

.flash {
  background: #14304a; border: 1px solid var(--accent); color: var(--text);
  padding: 10px 14px; border-radius: 8px; margin-bottom: 16px;
}

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 14px; }
.ticket { background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 14px; }
.ticket-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.ticket p { margin: 8px 0; }

.layout { display: grid; grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr); gap: 18px; }
@media (max-width: 1100px) { .layout { grid-template-columns: 1fr; } }

#console {
  width: 100%; height: 62vh; min-height: 420px; border: 1px solid var(--border);
  border-radius: 8px; background: #000;
}

.session-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; }
.session-meta { display: flex; align-items: center; gap: 12px; }
.timer.low, .timer .low { color: var(--bad); }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 9px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
table.kv th { width: 30%; color: var(--muted); font-weight: 500; }

.badge {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px;
  background: var(--panel-2); border: 1px solid var(--border); color: var(--muted);
}
.badge.ok { color: var(--ok); border-color: var(--ok); }
.badge.warn { color: var(--warn); border-color: var(--warn); }
.badge.state-ready, .badge.state-in_use, .badge.state-passed { color: var(--ok); border-color: var(--ok); }
.badge.state-error, .badge.state-destroyed { color: var(--bad); border-color: var(--bad); }
.badge.state-requested, .badge.state-allocating, .badge.state-provisioning, .badge.state-checking { color: var(--warn); border-color: var(--warn); }
.badge.diff-1 { color: var(--ok); border-color: var(--ok); }
.badge.diff-2 { color: var(--accent); border-color: var(--accent); }
.badge.diff-3 { color: var(--warn); border-color: var(--warn); }
.badge.diff-4 { color: var(--bad); border-color: var(--bad); }

button, .button {
  background: var(--accent); color: #05121f; border: 0; border-radius: 7px;
  padding: 8px 14px; font-size: 14px; font-weight: 600; cursor: pointer; display: inline-block;
}
button:hover, .button:hover { filter: brightness(1.08); text-decoration: none; }
button.secondary, .button.secondary { background: var(--panel-2); color: var(--text); border: 1px solid var(--border); }
button.danger { background: #7f1d1d; color: #fecaca; }
button.small, .button.small { padding: 5px 10px; font-size: 13px; }
button.link { background: none; border: 0; color: var(--accent); padding: 0; font-weight: 500; }
.inline { display: inline; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }

form label { display: block; margin: 12px 0 4px; font-size: 13px; color: var(--muted); }
input[type=text], input[type=password], input:not([type]) {
  width: 100%; padding: 9px 11px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 14px;
}

.login-card { max-width: 380px; margin: 8vh auto; background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px; }
.login-card button { width: 100%; margin-top: 18px; }
.error { color: var(--bad); }

.briefing { white-space: pre-wrap; font-size: 14px; margin-top: 10px; }

ul.objectives { list-style: none; padding: 0; margin: 0; }
ul.objectives li { border-top: 1px solid var(--border); padding: 9px 0; }
ul.objectives li:first-child { border-top: 0; }
.objective-head { display: flex; gap: 8px; align-items: baseline; }
.objective-head .mark { width: 16px; }
.objective-head .weight { margin-left: auto; color: var(--muted); font-size: 12px; white-space: nowrap; }
li.done .mark { color: var(--ok); }
li.failed .mark { color: var(--bad); }
li.done span:nth-child(2) { text-decoration: line-through; opacity: .8; }
.detail { color: var(--muted); font-size: 13px; margin: 4px 0 0 24px; }
.hint { color: var(--warn); font-size: 13px; margin: 6px 0 0 24px; }
.score { margin-top: 12px; }

ul.timeline { list-style: none; padding: 0; margin: 8px 0 0; font-size: 13px; }
ul.timeline li { padding: 3px 0; border-bottom: 1px dashed var(--border); }

.spinner {
  width: 26px; height: 26px; border: 3px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

details summary { cursor: pointer; color: var(--muted); font-size: 13px; margin-top: 8px; }

/* ------------------------------------------------------------------ admin -- */
.admin-nav { display: flex; flex-wrap: wrap; gap: 4px; margin: 14px 0 22px; }
.admin-nav a {
  padding: 6px 11px; border: 1px solid var(--border); border-radius: 999px;
  font-size: 13px; color: var(--muted); text-decoration: none;
}
.admin-nav a:hover { color: var(--text); }
.admin-nav a.active { color: var(--text); border-color: var(--accent); background: var(--panel-2); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; margin: 16px 0; }
.tile {
  display: block; background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px; text-decoration: none; color: inherit;
}
a.tile:hover { border-color: var(--accent); }
.tile h3 { margin: 0 0 6px; font-size: 14px; color: var(--muted); font-weight: 600; }
.tile .big { font-size: 26px; margin: 4px 0; font-weight: 600; }
.tile p { margin: 4px 0; }
.tile .muted, .tile .small { font-size: 12px; }

.filters { display: flex; gap: 14px; flex-wrap: wrap; align-items: flex-end; }
.filters label { margin: 0; }
.filters input, .filters select { width: auto; }
form { margin: 0; }
form label { margin: 12px 0 4px; }
.kv { width: 100%; border-collapse: collapse; font-size: 13px; }
.kv th { text-align: left; color: var(--muted); font-weight: 500; padding: 5px 10px 5px 0; vertical-align: top; }
.kv td { padding: 5px 0; }
select, textarea, input[type=number] {
  width: 100%; padding: 9px 11px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text); font-size: 14px; font-family: inherit;
}
textarea { resize: vertical; }
button.danger, .link.danger { color: var(--bad); }

/* ---------------------------------------------------------------- lessons -- */
.tags { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0 0; }
.tag { font-size: 11px; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 1px 7px; }
.step, .exercise, .field { border-top: 1px solid var(--border); padding: 12px 0; }
.step:first-child, .exercise:first-child, .field:first-child { border-top: 0; }
.step h3, .exercise h3, .field h3 { font-size: 14px; margin: 0 0 6px; }
pre.cmd, pre.answer {
  background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px;
  padding: 10px 12px; overflow-x: auto; font-size: 13px; white-space: pre-wrap;
}
pre.answer { white-space: pre-wrap; }
.field.done .mark { color: var(--ok); }
.field.failed .mark { color: var(--bad); }

/* ------------------------------------------------------------- write-up --- */
.ticket-card label.ticket-field { margin: 14px 0 0; }
.ticket-card label.ticket-field > .label { display: block; color: var(--text); font-size: 14px; }
.ticket-card label.ticket-field > .weight { color: var(--muted); font-size: 12px; }
.ticket-card textarea { min-height: 80px; }
.danger.small { font-size: 12px; }