/* ============================================================================
   Piko — Network Operations Console (prototype)
   Dark operator theme. Trade-dress-distinct from any commercial vendor.
   Design tokens: deep-navy operator surface, muted teal brand accent, and a
   semantic status palette (status color carries information, not decoration).
   ========================================================================== */

:root {
  /* base surfaces */
  --bg:        #0d1524;
  --surface:   #131d31;
  --surface-2: #17223a;
  --elev:      #1e2b49;
  --border:    #27365b;
  --border-soft:#1d2b4b;

  /* text */
  --text:  #e7edf8;
  --muted: #93a4c4;
  --faint: #63759a;

  /* brand accent (muted teal — used sparingly for actions/active state) */
  --accent:    #37b3a7;
  --accent-2:  #2b8d84;
  --accent-ink:#04120f;

  /* semantic status */
  --ok:   #46cf8b;
  --warn: #e6b24c;
  --crit: #e46a6a;
  --info: #5aa6e6;

  --ok-bg:  rgba(70,207,139,.14);
  --warn-bg:rgba(230,178,76,.14);
  --crit-bg:rgba(228,106,106,.15);
  --info-bg:rgba(90,166,230,.14);
  --accent-bg:rgba(55,179,167,.14);

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;

  --radius: 8px;
  --radius-sm: 5px;
  --gap: 16px;
  --sidebar-w: 216px;
  --topbar-h: 56px;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
h1,h2,h3,h4 { margin: 0; font-weight: 600; letter-spacing: -0.01em; }
::selection { background: var(--accent-bg); }

/* ---- App shell -------------------------------------------------------- */
.app-shell { display: flex; flex-direction: column; height: 100vh; }

.topbar {
  height: var(--topbar-h);
  display: flex; align-items: center; gap: 20px;
  padding: 0 18px;
  background: linear-gradient(180deg, #16223b, #121c31);
  border-bottom: 1px solid var(--border);
  flex: 0 0 auto;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand .mark { width: 26px; height: 26px; display: block; }
.brand .name { font-size: 16px; font-weight: 700; letter-spacing: 0.2px; }
.brand .name small { color: var(--faint); font-weight: 500; font-size: 11px; display:block; letter-spacing: 0.3px; margin-top:-3px; }

.site-select {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 6px 10px; color: var(--muted); font-size: 13px;
}
.site-select strong { color: var(--text); font-weight: 600; }

.searchbox {
  flex: 1 1 auto; max-width: 420px;
  display: flex; align-items: center; gap: 8px;
  background: var(--surface-2); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 7px 11px; color: var(--faint);
}
.searchbox input {
  border: 0; background: transparent; color: var(--text); font-family: inherit;
  font-size: 13px; width: 100%; outline: none;
}
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 14px; }
.conn-pill {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--ok-bg); color: var(--ok);
  border: 1px solid rgba(70,207,139,.3);
  padding: 5px 10px; border-radius: 999px; font-size: 12px; font-weight: 600;
}
.dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.user-badge { display:flex; align-items:center; gap:9px; }
.avatar { width: 30px; height: 30px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: var(--accent-ink); display:grid; place-items:center; font-weight:700; font-size:12px; }
.user-badge .who { font-size: 12px; line-height: 1.2; }
.user-badge .who span { display:block; color: var(--faint); }

.layout { display: flex; flex: 1 1 auto; min-height: 0; }

/* ---- Sidebar ---------------------------------------------------------- */
.sidebar {
  width: var(--sidebar-w); flex: 0 0 auto;
  background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 10px 8px;
}
.nav-group-label { color: var(--faint); font-size: 11px; padding: 12px 10px 6px; letter-spacing: .04em; }
.nav-item {
  display: flex; align-items: center; gap: 11px;
  padding: 9px 11px; border-radius: var(--radius-sm);
  color: var(--muted); cursor: pointer; font-size: 13.5px; font-weight: 500;
  border: 1px solid transparent; user-select: none;
}
.nav-item svg { width: 18px; height: 18px; flex: 0 0 auto; opacity: .85; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active {
  background: var(--accent-bg); color: var(--text);
  border-color: rgba(55,179,167,.35);
}
.nav-item.active svg { color: var(--accent); opacity: 1; }
.nav-item .badge-count {
  margin-left: auto; background: var(--crit-bg); color: var(--crit);
  border-radius: 999px; font-size: 11px; padding: 1px 7px; font-weight: 700;
}
.sidebar-foot { margin-top: auto; padding: 10px; color: var(--faint); font-size: 11px; border-top: 1px solid var(--border-soft); }
.sidebar-foot .tag { color: var(--warn); font-weight: 600; }

/* ---- Content ---------------------------------------------------------- */
.content { flex: 1 1 auto; min-width: 0; overflow-y: auto; padding: 22px 26px 40px; }
.view { display: none; }
.view.active { display: block; }
.view-head { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 18px; gap: 16px; }
.view-head h1 { font-size: 21px; }
.view-head p { margin: 4px 0 0; color: var(--muted); font-size: 13px; max-width: 70ch; }

/* ---- Panels & grid ---------------------------------------------------- */
.grid { display: grid; gap: var(--gap); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-2 { grid-template-columns: 1.4fr 1fr; }
.panel {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.panel > .panel-head { display:flex; align-items:center; justify-content:space-between; margin: -2px 0 12px; }
.panel-head h3 { font-size: 14px; }
.panel-head .hint { color: var(--faint); font-size: 12px; }

/* stat / health cards */
.stat { display: flex; flex-direction: column; gap: 6px; }
.stat .label { color: var(--muted); font-size: 12px; }
.stat .value { font-size: 30px; font-weight: 700; letter-spacing: -0.02em; line-height: 1; }
.stat .value.mono { font-family: var(--mono); }
.stat .sub { font-size: 12px; color: var(--faint); }
.stat.accent .value { color: var(--accent); }
.stat.ok .value { color: var(--ok); }
.stat.warn .value { color: var(--warn); }
.stat.crit .value { color: var(--crit); }

/* health hero */
.hero {
  display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: center;
  background: linear-gradient(135deg, #15223c 0%, #121b30 60%);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 22px; margin-bottom: var(--gap);
}
.gauge { width: 118px; height: 118px; position: relative; display:grid; place-items:center; }
.gauge svg { transform: rotate(-90deg); }
.gauge .score { position: absolute; text-align: center; }
.gauge .score b { font-size: 30px; font-weight: 700; display:block; line-height: 1; }
.gauge .score span { font-size: 11px; color: var(--muted); }
.hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }

/* ---- Tables ----------------------------------------------------------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th {
  text-align: left; color: var(--muted); font-weight: 600; font-size: 12px;
  padding: 9px 12px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.data td { padding: 10px 12px; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
table.data tr:last-child td { border-bottom: 0; }
table.data tbody tr { cursor: pointer; }
table.data tbody tr:hover { background: var(--surface-2); }
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.faint { color: var(--faint); }

/* ---- Badges ----------------------------------------------------------- */
.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600;
  border: 1px solid transparent;
}
.badge .dot { width: 7px; height: 7px; }
.badge.ok   { background: var(--ok-bg);   color: var(--ok);   border-color: rgba(70,207,139,.28); }
.badge.warn { background: var(--warn-bg); color: var(--warn); border-color: rgba(230,178,76,.28); }
.badge.crit { background: var(--crit-bg); color: var(--crit); border-color: rgba(228,106,106,.3); }
.badge.info { background: var(--info-bg); color: var(--info); border-color: rgba(90,166,230,.28); }
.badge.neutral { background: var(--surface-2); color: var(--muted); border-color: var(--border); }

/* ---- Buttons ---------------------------------------------------------- */
.btn {
  font-family: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
  border-radius: var(--radius-sm); padding: 8px 14px; border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text);
}
.btn:hover { border-color: var(--faint); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover { background: #40c3b6; }
.btn.ghost { background: transparent; }
.btn.small { padding: 5px 10px; font-size: 12px; }

/* ---- Alerts list ------------------------------------------------------ */
.alert-row {
  display: grid; grid-template-columns: 120px 1fr auto; gap: 14px; align-items: center;
  padding: 12px 14px; border: 1px solid var(--border-soft); border-radius: var(--radius-sm);
  background: var(--surface); margin-bottom: 10px; cursor: pointer;
}
.alert-row:hover { background: var(--surface-2); }
.alert-row .sev { font-weight: 700; font-size: 12px; }
.alert-row .msg { font-size: 13.5px; }
.alert-row .msg small { display:block; color: var(--faint); font-family: var(--mono); font-size: 12px; margin-top: 2px; }
.alert-row .when { color: var(--faint); font-size: 12px; text-align: right; }
.sev-crit { color: var(--crit); } .sev-warn { color: var(--warn); }
.sev-info { color: var(--info); } .sev-ok { color: var(--ok); }

/* ---- Drawer / detail -------------------------------------------------- */
.drawer-scrim { position: fixed; inset: 0; background: rgba(6,10,18,.6); display:none; z-index: 40; }
.drawer-scrim.open { display: block; }
.drawer {
  position: fixed; top: 0; right: 0; height: 100vh; width: 460px; max-width: 92vw;
  background: var(--surface); border-left: 1px solid var(--border);
  transform: translateX(100%); transition: transform .18s ease; z-index: 41;
  display: flex; flex-direction: column;
}
.drawer.open { transform: translateX(0); }
.drawer-head { display:flex; align-items:center; justify-content: space-between; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.drawer-head h3 { font-size: 15px; }
.drawer-body { padding: 18px; overflow-y: auto; }
.drawer .close { cursor: pointer; color: var(--muted); background: none; border: 0; font-size: 20px; line-height: 1; }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 8px 12px; font-size: 13px; margin: 4px 0 12px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }

/* ---- Config viewer ---------------------------------------------------- */
.cfg-toolbar { display:flex; align-items:center; gap: 12px; margin-bottom: 12px; }
select.field {
  background: var(--surface-2); color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: 7px 10px; font-family: inherit; font-size: 13px;
}
pre.config {
  background: #0a1120; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; overflow: auto; font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
  color: #c9d6ee; max-height: 62vh; margin: 0;
}
pre.config .cmt { color: var(--faint); }

/* ---- Terminal --------------------------------------------------------- */
.cli-bar { display:flex; align-items:center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.cli-backend {
  display:inline-flex; align-items:center; gap:7px; font-size:12px; font-weight:600;
  padding: 5px 10px; border-radius: 999px; background: var(--warn-bg); color: var(--warn);
  border: 1px solid rgba(230,178,76,.3);
}
.terminal {
  background: #070c17; border: 1px solid var(--border); border-radius: var(--radius);
  height: 60vh; display: flex; flex-direction: column; overflow: hidden;
}
.terminal .term-out {
  flex: 1 1 auto; overflow-y: auto; padding: 14px 16px;
  font-family: var(--mono); font-size: 13px; line-height: 1.55; color: #cfe0d8;
  white-space: pre-wrap; word-break: break-word;
}
.term-out .echo { color: #eaf2ee; }
.term-out .err  { color: var(--crit); }
.term-out .flag { color: var(--ok); font-weight: 700; }
.term-out .sys  { color: var(--faint); }
.terminal .term-inline { display:flex; align-items:center; padding: 10px 16px; border-top: 1px solid #12203a; background:#0a1223; }
.terminal .term-prompt { font-family: var(--mono); font-size: 13px; color: var(--accent); margin-right: 8px; white-space: nowrap; }
.terminal input.term-cmd {
  flex: 1 1 auto; border: 0; background: transparent; color: #eaf2ee;
  font-family: var(--mono); font-size: 13px; outline: none;
}

/* ---- Challenges ------------------------------------------------------- */
.chal-list { display: grid; gap: 12px; }
.chal-card {
  display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 15px 16px; cursor: pointer;
}
.chal-card:hover { border-color: var(--faint); }
.chal-card.solved { border-color: rgba(70,207,139,.4); background: linear-gradient(90deg, var(--ok-bg), var(--surface) 60%); }
.chal-card .title { font-size: 15px; font-weight: 600; }
.chal-card .meta { display:flex; gap: 8px; margin-top: 7px; flex-wrap: wrap; }
.chal-card .pts { font-family: var(--mono); font-size: 13px; color: var(--muted); text-align:right; }
.chal-card .pts b { color: var(--text); font-size: 16px; display:block; }

.chal-detail .obj { font-size: 14px; color: var(--text); margin: 6px 0 14px; }
.hint-item { border: 1px solid var(--border-soft); border-radius: var(--radius-sm); padding: 10px 12px; margin-bottom: 8px; background: var(--surface); }
.hint-item .reveal { cursor: pointer; color: var(--accent); font-size: 13px; font-weight: 600; }
.hint-item .body { color: var(--muted); font-size: 13px; margin-top: 8px; display:none; }
.hint-item.open .body { display:block; }
.submit-row { display:flex; gap: 10px; margin-top: 16px; }
.submit-row input {
  flex: 1 1 auto; background: #0a1120; border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 10px 12px; color: var(--text); font-family: var(--mono); font-size: 13px; outline: none;
}
.submit-row input:focus { border-color: var(--accent); }
.solved-banner { display:none; align-items:center; gap:8px; margin-top: 14px; color: var(--ok); font-weight: 600; }
.solved-banner.show { display:flex; }

/* score chip in challenges header */
.score-chip { font-family: var(--mono); background: var(--surface-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 14px; font-size: 13px; }
.score-chip b { color: var(--accent); }

/* ---- Toast ------------------------------------------------------------ */
#toast-wrap { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); z-index: 60; display:flex; flex-direction:column; gap:10px; align-items:center; }
.toast {
  background: var(--elev); border: 1px solid var(--border); color: var(--text);
  padding: 11px 16px; border-radius: var(--radius); font-size: 13.5px; box-shadow: 0 8px 30px rgba(0,0,0,.4);
  display:flex; align-items:center; gap: 10px; min-width: 240px;
}
.toast.ok { border-color: rgba(70,207,139,.5); }
.toast.err { border-color: rgba(228,106,106,.5); }
.toast .ic { font-weight: 800; }
.toast.ok .ic { color: var(--ok); } .toast.err .ic { color: var(--crit); }

/* topology */
.topo-wrap { background: #0a1120; border: 1px solid var(--border); border-radius: var(--radius); padding: 8px; }
.topo-node { cursor: pointer; }
.topo-node text { font-family: var(--mono); font-size: 11px; fill: var(--text); }
.topo-link { stroke: #33456e; stroke-width: 2; }
.topo-link.down { stroke: var(--crit); stroke-dasharray: 5 4; }

.legend { display:flex; gap: 16px; margin-top: 12px; font-size: 12px; color: var(--muted); }
.legend span { display:inline-flex; align-items:center; gap: 6px; }

@media (max-width: 1100px) {
  .grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
  .grid.cols-2 { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 760px) {
  .sidebar { display: none; }
  .searchbox { display: none; }
}