/* DartCTF Control Plane ─ UI styles */

:root {
  --bg:      #07070f;
  --surface: #0d0d1e;
  --card:    #11112a;
  --border:  #1e1e42;
  --border2: #2b2b58;
  --accent:  #7c3aed;
  --accent2: #a855f7;
  --glow:    rgba(124, 58, 237, .35);
  --cyan:    #22d3ee;
  --green:   #34d399;
  --red:     #f87171;
  --amber:   #fbbf24;
  --text:    #e2e8f0;
  --muted:   #94a3b8;
  --dim:     #3d3d6b;
  --mono:    'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  min-width: 0;
}

/* ─── Topbar ────────────────────────────────────────────────────────────── */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 62px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  /* subtle purple scan-line at the very bottom */
  box-shadow: 0 1px 0 0 rgba(124, 58, 237, .3);
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-hex {
  font-size: 26px;
  color: var(--accent2);
  filter: drop-shadow(0 0 10px var(--accent));
  line-height: 1;
  animation: hex-pulse 4s ease-in-out infinite;
}

@keyframes hex-pulse {
  0%, 100% { filter: drop-shadow(0 0 8px var(--accent)); }
  50%       { filter: drop-shadow(0 0 18px var(--accent2)); }
}

.brand-name {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 5px;
  background: linear-gradient(110deg, var(--accent2) 20%, var(--cyan) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.brand-sub {
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--dim);
}

.topbar-project {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(640px, 46vw);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.server-badge {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  padding: 3px 9px;
  border: 1px solid var(--border2);
  border-radius: 4px;
  background: var(--card);
}

/* ─── Main layout ───────────────────────────────────────────────────────── */

.main {
  margin: 0 auto;
  padding: 36px 32px;
}

#status-container > * + * { margin-top: 20px; }

.docker-sync-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  margin-bottom: 4px;
  font-size: 14px;
  color: var(--text-dim, #94a3b8);
  background: rgba(56, 189, 248, .06);
  border: 1px solid rgba(56, 189, 248, .2);
  border-radius: 6px;
}
.docker-sync-banner__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan, #38bdf8);
  animation: docker-sync-pulse 1.2s ease-in-out infinite;
}
@keyframes docker-sync-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .35; transform: scale(.85); }
}

/* ─── Login ─────────────────────────────────────────────────────────────── */

.login-outer {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse 70% 50% at 50% -10%, rgba(124, 58, 237, .14) 0%, transparent 60%),
    var(--bg);
}

.login-card {
  width: 380px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 44px 40px;
  text-align: center;
  box-shadow: 0 0 80px rgba(124, 58, 237, .12), 0 0 0 1px rgba(168, 85, 247, .06);
}

.login-hex {
  font-size: 46px;
  color: var(--accent2);
  margin-bottom: 14px;
  filter: drop-shadow(0 0 14px var(--accent));
  animation: hex-pulse 3s ease-in-out infinite;
}

.login-title {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 6px;
  background: linear-gradient(110deg, var(--accent2) 20%, var(--cyan) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.login-sub {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--dim);
  margin-bottom: 32px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
}

/* ─── Buttons ───────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 8px 18px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: background .15s, border-color .15s, box-shadow .15s, opacity .15s;
  white-space: nowrap;
  user-select: none;
}

.btn:disabled { opacity: .35; cursor: not-allowed; pointer-events: none; }
.btn:active   { transform: scale(.97); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent2);
  box-shadow: 0 0 16px var(--glow);
}
.btn-primary:hover { background: var(--accent2); box-shadow: 0 0 24px var(--glow); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--border2);
}
.btn-ghost:hover { background: var(--card); color: var(--text); }

.btn-sm { padding: 5px 11px; font-size: 13px; border-radius: 5px; }
.btn-block { width: 100%; }

.btn-start   { color: var(--green);  border-color: var(--green);  background: transparent; }
.btn-start:hover   { background: rgba(52, 211, 153, .1); }

.btn-stop    { color: var(--red);    border-color: var(--red);    background: transparent; }
.btn-stop:hover    { background: rgba(248, 113, 113, .1); }

.btn-restart { color: var(--cyan);   border-color: var(--cyan);   background: transparent; }
.btn-restart:hover { background: rgba(34, 211, 238, .1); }

/* ─── Form fields ───────────────────────────────────────────────────────── */

.field-lbl {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 5px;
}

.field-inp {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 7px;
  color: var(--text);
  font-size: 14px;
  padding: 10px 14px;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.field-inp:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, .2);
}

/* ─── Alert ─────────────────────────────────────────────────────────────── */

.alert { padding: 10px 14px; border-radius: 7px; font-size: 14px; margin-bottom: 4px; }

.alert-err {
  background: rgba(248, 113, 113, .08);
  border: 1px solid rgba(248, 113, 113, .25);
  color: var(--red);
}

/* ─── Dead-gateway alert ─────────────────────────────────────────────────── */

.gw-dead-alert {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(239, 68, 68, .08);
  border: 1px solid rgba(239, 68, 68, .5);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
  color: var(--red);
  font-size: 14px;
  line-height: 1.6;
  animation: pulse-border-red 1.5s ease-in-out infinite;
}

@keyframes pulse-border-red {
  0%, 100% { border-color: rgba(239, 68, 68, .5); box-shadow: none; }
  50%       { border-color: rgba(239, 68, 68, .9); box-shadow: 0 0 12px rgba(239, 68, 68, .25); }
}

.gw-dead-alert__icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
  color: var(--red);
}

.gw-dead-alert__list {
  margin: 6px 0 4px 18px;
}

.gw-dead-alert__logs {
  color: var(--muted);
  font-size: 12px;
  margin-left: 8px;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.gw-dead-alert__logs:hover { color: var(--text); }

.chal-row--gw-missing td:first-child {
  border-left: 3px solid var(--text-dim);
}

.badge-gw-dead {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--amber);
  background: rgba(251, 191, 36, .12);
  border: 1px solid rgba(251, 191, 36, .4);
  border-radius: 4px;
  padding: 1px 6px;
  vertical-align: middle;
  white-space: nowrap;
}

.badge-gw-missing {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text-dim);
  background: rgba(148, 163, 184, .10);
  border: 1px solid rgba(148, 163, 184, .30);
  border-radius: 4px;
  padding: 1px 6px;
  vertical-align: middle;
  white-space: nowrap;
}

.gw-missing-alert {
  background: rgba(148, 163, 184, .08) !important;
  border-color: rgba(148, 163, 184, .4) !important;
  color: var(--text-dim) !important;
  animation: none !important;
}

.status-missing {
  color: var(--text-dim);
  opacity: 0.7;
}

.badge-initiating {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
  background: rgba(34, 211, 238, .10);
  border: 1px solid rgba(34, 211, 238, .35);
  border-radius: 4px;
  padding: 1px 6px;
  vertical-align: middle;
  white-space: nowrap;
  animation: pulse-initiating 1.4s ease-in-out infinite;
}
@keyframes pulse-initiating {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.45; }
}

/* ─── Backing-container degraded alert ──────────────────────────────────── */

.backing-alert {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: rgba(248, 113, 113, .07);
  border: 1px solid rgba(248, 113, 113, .35);
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 16px;
  color: var(--red);
  font-size: 13px;
  line-height: 1.6;
  animation: pulse-border 2s ease-in-out infinite;
}

@keyframes pulse-border {
  0%, 100% { border-color: rgba(248, 113, 113, .35); }
  50%       { border-color: rgba(248, 113, 113, .75); }
}

.backing-alert__icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 1px;
}

.backing-alert__list {
  margin: 6px 0 4px 18px;
}

.backing-alert__ctrs {
  color: rgba(248, 113, 113, .7);
  font-size: 0.8em;
}

.chal-row--degraded td:first-child {
  border-left: 3px solid var(--red);
}

.badge-degraded {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--red);
  background: rgba(248, 113, 113, .1);
  border: 1px solid rgba(248, 113, 113, .3);
  border-radius: 4px;
  padding: 1px 6px;
  vertical-align: middle;
  white-space: nowrap;
}

.badge-debug {
  display: inline-block;
  margin-left: 6px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #f59e0b;
  background: rgba(245, 158, 11, .10);
  border: 1px solid rgba(245, 158, 11, .35);
  border-radius: 4px;
  padding: 1px 6px;
  vertical-align: middle;
  white-space: nowrap;
}

/* ─── Stats grid ────────────────────────────────────────────────────────── */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 14px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 20px;
  position: relative;
  overflow: hidden;
}

/* glowing top border */
.stat-card::after {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--cyan) 100%);
}
.stat-ph::after { background: var(--border2); }

.stat-val {
  font-size: 36px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-lbl {
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
}

.stat-meta {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}

.stat-card-link {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: border-color .15s, background .15s, transform .15s, box-shadow .15s;
}

.stat-card-link:hover {
  border-color: var(--border2);
  background: rgba(255, 255, 255, .02);
  transform: translateY(-1px);
}

.stat-card-alert {
  border-color: rgba(248, 113, 113, .35);
  box-shadow: 0 0 0 1px rgba(248, 113, 113, .08);
}

.stat-card-alert::after {
  background: linear-gradient(90deg, rgba(248, 113, 113, .95) 0%, rgba(251, 191, 36, .95) 100%);
}

/* ─── Panel ─────────────────────────────────────────────────────────────── */

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.panel-challenges { overflow: visible; }

.panel-challenges .table-scroll {
  overflow-y: visible;
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior-x: contain;
}

.panel-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.panel-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
}

.poll-hint {
  font-size: 11px;
  color: var(--dim);
  transition: color .3s;
  cursor: default;
}
.poll-hint.active  { color: var(--green); }
.poll-hint.paused  { color: var(--amber); }


/* ─── Alerts page ────────────────────────────────────────────────────────── */

.alerts-page {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.alerts-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.alerts-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.alerts-summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--card);
}

.alerts-summary__count {
  font-size: 34px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.alerts-summary__meta {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.alerts-summary__label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
}

.alerts-summary__sub {
  font-size: 13px;
  color: var(--muted);
}

.alerts-ack {
  padding: 12px 14px;
  border: 1px solid rgba(34, 211, 238, .25);
  border-radius: 8px;
  background: rgba(34, 211, 238, .06);
  color: var(--text);
  font-size: 14px;
}

.alerts-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.alerts-panel__hdr {
  padding: 13px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
}

.alerts-list {
  display: flex;
  flex-direction: column;
}

.alerts-empty {
  padding: 28px 20px;
  color: var(--muted);
  font-size: 14px;
}

.alerts-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  border-top: 1px solid var(--border);
}

.alerts-item:first-child {
  border-top: 0;
}

.alerts-item--error {
  border-left: 3px solid rgba(248, 113, 113, .7);
}

.alerts-item--warn {
  border-left: 3px solid rgba(251, 191, 36, .7);
}

.alerts-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.alerts-item__title {
  font-size: 17px;
  font-weight: 700;
}

.alerts-item__sev {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.alerts-item__sev--error {
  color: var(--red);
  background: rgba(248, 113, 113, .10);
  border: 1px solid rgba(248, 113, 113, .25);
}

.alerts-item__sev--warn {
  color: var(--amber);
  background: rgba(251, 191, 36, .10);
  border: 1px solid rgba(251, 191, 36, .25);
}

.alerts-item__body {
  color: var(--text);
  font-size: 14px;
}

.alerts-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  font-size: 13px;
  color: var(--muted);
}

.alerts-item__meta code {
  color: var(--text);
}

.alerts-item__containers {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.alerts-item__container {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid var(--border2);
  border-radius: 999px;
  background: rgba(255, 255, 255, .03);
  font-family: var(--mono);
  font-size: 12px;
}

.alerts-item__container a {
  color: var(--cyan);
  text-decoration: none;
}

.alerts-item__container a:hover {
  color: var(--text);
}


/* ─── Table ─────────────────────────────────────────────────────────────── */

.tbl { width: 100%; border-collapse: collapse; }
.tbl-tree { min-width: 1240px; }

/* Challenge-path column expands; every other column shrinks to its content */
.tbl th:not(:first-child),
.tbl td:not(:first-child) { width: 1%; white-space: nowrap; }

.tbl th {
  padding: 9px 20px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--dim);
  text-align: left;
  background: rgba(0, 0, 0, .25);
  border-bottom: 1px solid var(--border);
}

.tbl td {
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.tbl tr:last-child td { border-bottom: none; }
.tbl tbody tr:hover   { background: rgba(255, 255, 255, .015); }

.th-right, .td-right { text-align: right; }
.th-center, .td-center { text-align: center; }

.td-path {
  position: relative;
  font-family: var(--mono);
  font-size: 14px;
  max-width: 560px;
  overflow: visible;
  white-space: nowrap;
}

.challenge-name-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  max-width: 100%;
}

.challenge-name-wrap:hover,
.challenge-name-wrap:focus-within {
  z-index: 60;
}

.challenge-name {
  display: inline-block;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.challenge-tag-list {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: 2px;
  min-width: 0;
}

.challenge-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border: 1px solid rgba(255, 255, 255, .08);
  border-radius: 999px;
  background: rgba(255, 255, 255, .045);
  color: rgba(240, 246, 252, .62);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.35;
  white-space: nowrap;
}

.challenge-summary-tooltip {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  z-index: 40;
  display: none;
  width: min(360px, 70vw);
  padding: 10px 12px;
  border: 1px solid var(--border2);
  border-radius: 8px;
  background: rgba(13, 13, 30, .98);
  color: var(--text);
  white-space: pre-wrap;
  line-height: 1.5;
  box-shadow: 0 12px 28px rgba(0, 0, 0, .45);
  /* Must receive pointer events so moving the cursor onto the tooltip does not
     hit-test through to the row below (which would end :hover and hide it). */
  pointer-events: auto;
  cursor: default;
}

.challenge-name-wrap:hover .challenge-summary-tooltip,
.challenge-name-wrap:focus-within .challenge-summary-tooltip {
  display: block;
}

/* Keep summary tooltips visible for rows near the bottom of the table. */
.tbl-tree tbody tr:nth-last-child(-n+4) .challenge-summary-tooltip {
  top: auto;
  bottom: calc(100% + 8px);
}

.td-act .btn + .btn { margin-left: 5px; }

/* ─── Status chip ───────────────────────────────────────────────────────── */

.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 500;
  padding: 3px 9px;
  border-radius: 20px;
}

.status-chip i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
  font-style: normal;
}

.status-running  { color: var(--green);  background: rgba(52, 211, 153, .08); }
.status-running i {
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  animation: dot-blink 2s ease-in-out infinite;
}

.status-exited   { color: var(--red); background: rgba(239, 68, 68, .08); }
.status-exited i { background: var(--red); }

.status-stopped   { color: var(--text-dim); background: rgba(148, 163, 184, .05); }
.status-stopped i { background: var(--text-dim); }

.status-paused   { color: var(--amber);  background: rgba(251, 191, 36, .08); }
.status-paused i { background: var(--amber); }

.status-unknown,
.status-created  { color: var(--muted);  background: rgba(148, 163, 184, .05); }
.status-unknown i,
.status-created i { background: var(--muted); }

.status-pending   { color: var(--cyan, #38bdf8); background: rgba(56, 189, 248, .08); }
.status-pending i { background: var(--cyan, #38bdf8); }

@keyframes dot-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: .35; }
}

/* ─── Instance badge ────────────────────────────────────────────────────── */

.inst-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--cyan);
  background: rgba(34, 211, 238, .08);
  border: 1px solid rgba(34, 211, 238, .2);
  padding: 1px 7px;
  border-radius: 10px;
}

/* ─── Badge ─────────────────────────────────────────────────────────────── */

.badge-soon {
  font-size: 9px;
  padding: 2px 8px;
  border-radius: 20px;
  background: rgba(124, 58, 237, .14);
  color: var(--accent2);
  border: 1px solid rgba(124, 58, 237, .3);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* ─── Placeholder block ─────────────────────────────────────────────────── */

.ph-block {
  padding: 44px 20px;
  text-align: center;
  color: var(--muted);
}

.ph-icon { font-size: 30px; color: var(--border2); margin-bottom: 14px; }
.ph-text { font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.ph-sub  { font-size: 12px; color: var(--dim); }
.ph-sub code, .ph-text code { font-family: var(--mono); color: var(--cyan); font-size: inherit; }

/* ─── Misc ──────────────────────────────────────────────────────────────── */

.text-green { color: var(--green); }
.text-red   { color: var(--red);   }
.text-cyan  { color: var(--cyan);  }
.text-dim   { color: var(--dim);   }
.text-muted { color: var(--muted); }

.empty-state {
  padding: 28px 20px;
  color: var(--muted);
  font-size: 13px;
}
.empty-state code { font-family: var(--mono); color: var(--cyan); }

code.mono { font-family: var(--mono); font-size: 12px; color: var(--cyan); }

.spinner {
  text-align: center;
  padding: 80px 20px;
  color: var(--dim);
  font-size: 13px;
  letter-spacing: 2px;
}

/* ─── Toast notifications ───────────────────────────────────────────────── */

#toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9999;
}

.toast {
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 13px;
  border-left: 3px solid;
  background: var(--card);
  box-shadow: 0 4px 24px rgba(0, 0, 0, .6);
  animation: toast-in .2s ease;
  max-width: 300px;
}

.toast-ok       { color: var(--green); border-color: var(--green); }
.toast-err      { color: var(--red);   border-color: var(--red);   }
.toast-progress { color: var(--fg2);   border-color: var(--fg2);  max-width: 360px; }

@keyframes toast-in {
  from { transform: translateX(16px); opacity: 0; }
  to   { transform: none;             opacity: 1; }
}

/* ─── Preset badge ──────────────────────────────────────────────────────── */

.preset-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  background: rgba(255, 255, 255, .03);
  color: var(--muted);
}
.preset-ephemeral  { color: var(--cyan);   border-color: rgba(34,  211, 238, .3); background: rgba(34,  211, 238, .05); }
.preset-jail       { color: var(--amber);  border-color: rgba(251, 191,  36, .3); background: rgba(251, 191,  36, .05); }
.preset-winjail    { color: var(--amber);  border-color: rgba(251, 191,  36, .3); background: rgba(251, 191,  36, .05); }
.preset-stateful   { color: var(--accent2);border-color: rgba(168,  85, 247, .3); background: rgba(168,  85, 247, .05); }
.preset-web        { color: #60a5fa;       border-color: rgba( 96, 165, 250, .3); background: rgba( 96, 165, 250, .05); }
.preset-formchecker{ color: #22c55e;       border-color: rgba( 34, 197,  94, .3); background: rgba( 34, 197,  94, .05); }
.preset-ssh        { color: var(--green);  border-color: rgba( 52, 211, 153, .3); background: rgba( 52, 211, 153, .05); }
.preset-winssh     { color: var(--green);  border-color: rgba( 52, 211, 153, .3); background: rgba( 52, 211, 153, .05); }
.preset-powershell { color: #7db9e8;       border-color: rgba(125, 185, 232, .3); background: rgba(125, 185, 232, .05); }
.preset-vpn        { color: var(--red);    border-color: rgba(248, 113, 113, .3); background: rgba(248, 113, 113, .05); }
.preset-vpn_l2     { color: var(--red);    border-color: rgba(248, 113, 113, .3); background: rgba(248, 113, 113, .05); }
.preset-shared     { color: var(--muted);  border-color: rgba(148, 163, 184, .3); background: rgba(148, 163, 184, .05); }

/* Dashboard TYPE column — internal instance family (maps label ``stateful`` → persistent) */
.type-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--mono);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  text-transform: lowercase;
  margin-right: 4px;
}
.type-persistent { color: var(--accent2); border-color: rgba(168,  85, 247, .35); background: rgba(168,  85, 247, .08); }
.type-ephemeral  { color: var(--cyan);   border-color: rgba(34,  211, 238, .35); background: rgba(34,  211, 238, .08); }
.type-shared     { color: var(--muted);  border-color: rgba(148, 163, 184, .35); background: rgba(148, 163, 184, .08); }
.type-vpn        { color: var(--red);    border-color: rgba(248, 113, 113, .35); background: rgba(248, 113, 113, .08); }
.type-vpn_l2     { color: var(--red);    border-color: rgba(248, 113, 113, .35); background: rgba(248, 113, 113, .08); }

/* Dashboard CONN column — challenge connection surface (not gateway Flask UI) */
.conn-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  font-family: var(--mono);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  text-transform: lowercase;
  margin-right: 4px;
}
.conn-tcp    { color: var(--muted);  border-color: rgba(148, 163, 184, .35); background: rgba(148, 163, 184, .06); }
.conn-web    { color: #60a5fa;       border-color: rgba( 96, 165, 250, .35); background: rgba( 96, 165, 250, .08); }
.conn-ssh    { color: var(--green);  border-color: rgba( 52, 211, 153, .35); background: rgba( 52, 211, 153, .08); }
.conn-winrm  { color: #7db9e8;       border-color: rgba(125, 185, 232, .35); background: rgba(125, 185, 232, .08); }
.conn-vpn    { color: var(--red);    border-color: rgba(248, 113, 113, .35); background: rgba(248, 113, 113, .08); }
.conn-vpn_l2 { color: var(--red);    border-color: rgba(248, 113, 113, .35); background: rgba(248, 113, 113, .08); }

/* ─── Per-instance OS icon (instance sub-rows) ─────────────────────────── */

.os-icon {
  display: inline-flex;
  align-items: center;
  vertical-align: middle;
  flex-shrink: 0;
  opacity: .85;
}
/* Linux icon is a filled Tux SVG — no currentColor stroke */
.os-icon-linux { opacity: .95; }

/* ─── OS badge (challenge OS column) ───────────────────────────────────── */

.os-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  background: rgba(255, 255, 255, .03);
}
.os-win   { color: #60a5fa; border-color: rgba(96, 165, 250, .35); background: rgba(96, 165, 250, .07); }
.os-linux { color: var(--muted); }

/* ─── Isolation badge ───────────────────────────────────────────────────── */

.isolation-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(148, 163, 184, .25);
  background: rgba(255, 255, 255, .04);
  color: var(--muted);
  letter-spacing: .5px;
  text-transform: uppercase;
}
.isolation-process { color: #7FBA00; border-color: rgba(127, 186,   0, .35); background: rgba(127, 186,   0, .07); }
.isolation-hyperv  { color: #00A4EF; border-color: rgba(  0, 164, 239, .35); background: rgba(  0, 164, 239, .07); }

/* ─── Extra action buttons ──────────────────────────────────────────────── */

.btn-hint { color: var(--cyan);   border-color: var(--cyan);   background: transparent; }
.btn-hint:hover { background: rgba(34, 211, 238, .1); }

.btn-log  { color: var(--muted);  border-color: var(--border2); background: transparent; }
.btn-log:hover { background: var(--card); color: var(--text); }

/* ─── Modal ─────────────────────────────────────────────────────────────── */

.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, .7);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }

.modal-card {
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 12px;
  width: min(640px, 96vw);
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 60px rgba(124, 58, 237, .2), 0 8px 32px rgba(0,0,0,.6);
  animation: modal-in .18s ease;
}

@keyframes modal-in {
  from { transform: scale(.95); opacity: 0; }
  to   { transform: none;       opacity: 1; }
}

.modal-hdr {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.modal-title {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--muted);
}

.modal-close {
  background: none;
  border: none;
  color: var(--dim);
  font-size: 14px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.modal-close:hover { color: var(--text); background: var(--border); }

.modal-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
}

/* ─── Connection hint layout ────────────────────────────────────────────── */

.hint-rows { display: flex; flex-direction: column; gap: 12px; }

.hint-row {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  align-items: start;
  gap: 10px;
}

.hint-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--dim);
  padding-top: 3px;
}

.hint-val {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  word-break: break-all;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  line-height: 1.4;
}

.hint-note {
  grid-column: 2 / -1;
  font-size: 12px;
  color: var(--muted);
  margin-top: -4px;
}

.btn-copy {
  font-size: 11px;
  padding: 4px 9px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
  align-self: center;
}
.btn-copy:hover { background: var(--border); color: var(--text); }
.btn-copy.copied { color: var(--green); border-color: var(--green); }

.hint-link {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--cyan);
  word-break: break-all;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  text-decoration: none;
  display: block;
}
.hint-link:hover { border-color: var(--cyan); }

/* ─── Log viewer ────────────────────────────────────────────────────────── */

.log-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.tab-btn {
  padding: 5px 14px;
  border-radius: 5px;
  border: 1px solid var(--border2);
  background: transparent;
  color: var(--muted);
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
}
.tab-btn:hover  { background: var(--border); color: var(--text); }
.tab-btn.active { background: var(--surface); color: var(--text); border-color: var(--accent); }

.log-pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 420px;
  overflow-y: auto;
}
.log-pre.hidden { display: none; }
.log-loading { color: var(--dim); font-style: italic; }

/* ─── Standalone logs page ──────────────────────────────────────────────── */

/* Single scroll area: inner log panes only, not the document. */
html:has(.logs-page),
body:has(.logs-page) {
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}
body:has(.logs-page) {
  display: flex;
  flex-direction: column;
}
body:has(.logs-page) > .main {
  flex: 1;
  min-height: 0;
  padding: 0;
  margin: 0 auto;
  width: 100%;
  max-width: none;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.logs-page {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  height: 100%;
  overflow: hidden;
}

.logs-header {
  flex-shrink: 0;
  padding: 16px 24px 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.logs-title-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
}

.logs-container-name {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--cyan);
  flex: 1;
}

.logs-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
}

.logs-status-badge {
  font-size: 11px;
  color: var(--muted);
  font-family: var(--mono);
}
.logs-status-badge.status-err { color: var(--red); }

.autorefresh-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}
.autorefresh-toggle input { accent-color: var(--accent); cursor: pointer; }

.logs-header .log-tabs { margin-bottom: 0; }
.logs-header .log-tabs .tab-btn {
  border-bottom: none;
  border-radius: 5px 5px 0 0;
  padding: 6px 18px;
}
.logs-header .log-tabs .tab-btn.active {
  background: var(--bg);
  border-color: var(--border);
  border-bottom-color: var(--bg);
}

.logs-body {
  flex: 1;
  overflow: hidden;
  background: var(--bg);
  padding: 0;
}

.log-pre-full {
  width: 100%;
  height: 100%;
  margin: 0;
  background: var(--bg);
  border: none;
  border-radius: 0;
  padding: 16px 24px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
  white-space: pre-wrap;
  word-break: break-all;
  overflow-y: auto;
  box-sizing: border-box;
}
.log-pre-full.hidden { display: none; }
.log-pre-full.log-loading { color: var(--dim); font-style: italic; }

/* ─── Challenge row expand / instance sub-rows ──────────────────────────── */

.chal-row.has-insts {
  cursor: pointer;
  user-select: none;
}

.expand-chevron {
  display: inline-block;
  width: 14px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  margin-right: 4px;
  transition: transform .18s ease, color .18s ease;
  vertical-align: middle;
}

.expand-chevron--none {
  visibility: hidden;
  pointer-events: none;
}

.chal-row.expanded .expand-chevron {
  transform: rotate(90deg);
  color: var(--cyan);
}

.chal-row.has-insts:not(.expanded) .expand-chevron {
  color: var(--fg);
  opacity: 0.6;
}

.inst-sub-row.hidden { display: none; }

.inst-sub-row td {
  padding: 0 !important;
  border-bottom: none !important;
}

.inst-sub-cell { background: rgba(0, 0, 0, .22); }

.inst-sub-row--infra .inst-sub-cell { background: rgba(255, 200, 80, .04); border-left: 2px solid rgba(255, 200, 80, .25); }

.inst-row-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 7px 20px 7px 48px;
  border-bottom: 1px solid rgba(30, 30, 66, .6);
}

.inst-sub-row:last-child .inst-row-inner { border-bottom: none; }

.inst-sub-name {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
}

.inst-token {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--fg);
  background: rgba(255,255,255,.06);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  cursor: default;
  user-select: all;
}

.inst-role-badge {
  font-size: 10px;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .06em;
  color: rgba(255, 200, 80, .8);
  background: rgba(255, 200, 80, .1);
  border: 1px solid rgba(255, 200, 80, .25);
  border-radius: 3px;
  padding: 1px 5px;
}

.inst-uptime {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
  white-space: nowrap;
}

.inst-sub-spacer { flex: 1; }

/* ─── Memory panel ──────────────────────────────────────────────────────── */

.mem-panel {}

.mem-total-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px 10px;
  border-bottom: 1px solid var(--border);
  background: rgba(255, 255, 255, .03);
}

.mem-total-label {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  width: 190px;
  flex-shrink: 0;
  letter-spacing: .04em;
}

.mem-total-row .mem-mb {
  font-size: 15px;
  color: var(--text);
}

.mem-body {
  padding: 4px 0 8px;
}

/* One row per challenge path: collapsed by default; summary shows count + total MB */
details.mem-expander {
  border-top: 1px solid var(--border);
}

details.mem-expander:first-of-type {
  border-top: none;
}

details.mem-expander > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 20px 8px;
  user-select: none;
}

details.mem-expander > summary::-webkit-details-marker {
  display: none;
}

details.mem-expander > summary::before {
  content: '▸';
  flex-shrink: 0;
  width: 1em;
  font-size: 11px;
  color: var(--dim);
  transition: transform 0.12s ease;
}

details.mem-expander[open] > summary::before {
  content: '▾';
}

details.mem-expander > summary:hover {
  background: rgba(255, 255, 255, .04);
}

.mem-expander-label {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mem-expander-meta {
  font-family: var(--mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  flex-shrink: 0;
  white-space: nowrap;
}

.mem-expander-body {
  padding: 2px 20px 12px 44px;
}

.mem-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 4px 0;
}

.mem-name {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  width: 280px;
  flex-shrink: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Subtle role colour tinting */
.mem-name.mem-role-system  { color: var(--cyan);   }
.mem-name.mem-role-gateway { color: var(--accent2); }
.mem-name.mem-role-infra   { color: var(--amber);   }
.mem-name.mem-role-pool    { color: #64748b;        }

/* Name is an anchor — keep role colour, underline only on hover */
a.mem-name { text-decoration: none; }
a.mem-name:hover { text-decoration: underline dotted; }

.mem-spark {
  flex: 1;
  min-width: 80px;
  max-width: 260px;
  border-radius: 3px;
  display: block;
  /* canvas has fixed pixel dims; CSS stretch is intentional for fluid layout */
}

.mem-mb {
  font-family: var(--mono);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  min-width: 76px;
  text-align: right;
  flex-shrink: 0;
}

.mem-unit {
  font-size: 12px;
  color: var(--muted);
}

.mem-snaps {
  font-family: var(--mono);
  font-size: 12px;
  font-style: italic;
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
  min-width: 0;
  flex-wrap: wrap;
}

.mem-snap-val {
  color: var(--muted);
  white-space: nowrap;
}

.mem-snap-val::after { content: ' MB'; }

.mem-snap-latest {
  color: var(--text);
  font-style: normal;
  font-weight: 600;
}

.mem-snap-sep {
  color: var(--dim);
  font-style: normal;
}

.btn-mem-snap {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 2px 9px;
  border-radius: 4px;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.btn-mem-snap:hover {
  color: var(--accent2);
  border-color: var(--accent);
}
.btn-mem-clear:hover {
  color: var(--red);
  border-color: var(--red);
}
.btn-mem-snap:active {
  transform: scale(0.95);
}

.mem-conns-badge {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--green);
  background: rgba(52, 211, 153, .1);
  border: 1px solid rgba(52, 211, 153, .3);
  border-radius: 4px;
  padding: 2px 8px;
}

.mem-updated {
  font-size: 10px;
  color: var(--dim);
  font-variant-numeric: tabular-nums;
}

/* ─── Demo toggle ──────────────────────────────────────────────────────── */

.btn-demo-toggle {
  font-size: 11px;
  padding: 3px 12px;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.04);
  color: var(--text);
  cursor: pointer;
  transition: all .15s;
}
.btn-demo-toggle:hover { border-color: var(--accent); color: var(--accent); }
.btn-demo-toggle:disabled { opacity: .5; cursor: wait; }

/* ─── Challenge type badge ─────────────────────────────────────────────── */

.challenge-type-badge {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  border-radius: 3px;
  padding: 1px 5px;
  margin-left: 6px;
  vertical-align: middle;
}
.challenge-type-demo {
  color: #c9a0dc;
  background: rgba(180, 130, 210, .15);
  border: 1px solid rgba(180, 130, 210, .3);
}

/* ─── Copy name button ─────────────────────────────────────────────────── */

.copy-name-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: 0.75rem;
  padding: 0 3px;
  margin-left: 4px;
  border-radius: 3px;
  opacity: 0;
  transition: opacity .15s, color .15s, border-color .15s;
  vertical-align: middle;
  line-height: 1;
}

.chal-row:hover .copy-name-btn { opacity: .6; }
.copy-name-btn:hover { opacity: 1 !important; color: var(--text); border-color: var(--border); }
.copy-name-btn.copied { color: var(--green); opacity: 1 !important; }

/* ─── Idle status (unstarted demos) ────────────────────────────────────── */

.status-idle i {
  background: var(--dim, #666);
}
.status-idle {
  color: var(--dim, #888);
}

/* ─── Live stats (Sess / Conns columns) ────────────────────────────────── */

.live-stat {
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--dim);
}
.live-stat--active {
  color: var(--text);
  font-weight: 600;
}

/* ─── System panel ─────────────────────────────────────────────────────── */

.system-panel .panel-hdr { border-bottom: 1px solid var(--border); }

.system-row-list { padding: 6px 0; }

.system-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 14px;
  font-size: 12px;
}
.system-row__label {
  font-weight: 600;
  min-width: 100px;
}
.system-row__name {
  font-size: 11px;
  color: var(--dim);
}
.system-row--clickable { cursor: pointer; }
.system-row--clickable:hover { background: rgba(124, 58, 237, .05); }

/* ─── Toggle switch ─────────────────────────────────────────────────────── */

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch input { opacity: 0; width: 0; height: 0; position: absolute; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: var(--border2);
  border-radius: 20px;
  transition: background .2s, box-shadow .2s;
}
.toggle-slider::before {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  left: 3px;
  bottom: 3px;
  background: var(--muted);
  border-radius: 50%;
  transition: transform .2s, background .2s;
}

.toggle-switch input:checked + .toggle-slider {
  background: rgba(52, 211, 153, .3);
  box-shadow: 0 0 8px rgba(52, 211, 153, .2);
}
.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(16px);
  background: var(--green);
}

.toggle-switch input:disabled + .toggle-slider {
  opacity: .4;
  cursor: not-allowed;
}

/* Transitioning state (JS adds this) */
.toggle-switch.transitioning .toggle-slider::before {
  animation: toggle-pulse .8s ease-in-out infinite;
}
@keyframes toggle-pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .3; }
}

/* Size variants */
.toggle-switch--lg {
  width: 44px;
  height: 24px;
}
.toggle-switch--lg .toggle-slider::before {
  width: 18px;
  height: 18px;
}
.toggle-switch--lg input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

.toggle-switch--sm {
  width: 30px;
  height: 16px;
}
.toggle-switch--sm .toggle-slider::before {
  width: 10px;
  height: 10px;
}
.toggle-switch--sm input:checked + .toggle-slider::before {
  transform: translateX(14px);
}

/* Debug checkbox next to toggle */
.debug-check {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #f59e0b;
  cursor: pointer;
  user-select: none;
  margin-right: 6px;
  vertical-align: middle;
}
.debug-check input {
  accent-color: #f59e0b;
  cursor: pointer;
  margin: 0;
}

/* Demo toggle purple tint */
.toggle-switch--demo input:checked + .toggle-slider {
  background: rgba(168, 85, 247, .3);
  box-shadow: 0 0 8px rgba(168, 85, 247, .2);
}
.toggle-switch--demo input:checked + .toggle-slider::before {
  background: var(--accent2);
}

/* ─── Global controls bar ──────────────────────────────────────────────── */

.global-controls {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 12px 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  flex-wrap: wrap;
}

.global-toggle-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.global-toggle-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.global-toggle-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

/* ─── Directory hierarchy rows ─────────────────────────────────────── */

.dir-row {
  cursor: pointer;
  user-select: none;
  background: rgba(0, 0, 0, .18);
}
.dir-row:hover { background: rgba(124, 58, 237, .06); }

.dir-inner {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dir-name {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--accent2);
  letter-spacing: .04em;
}

.dir-count {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.dir-row .expand-chevron {
  transition: transform .18s ease, color .18s ease;
}
.dir-row.expanded .expand-chevron {
  transform: rotate(90deg);
  color: var(--cyan);
}

/* ─── Clickable challenge rows ─────────────────────────────────────── */

.chal-row--clickable {
  cursor: pointer;
}
.chal-row--clickable:hover {
  background: rgba(124, 58, 237, .05) !important;
}

/* ─── Extra-service rows ───────────────────────────────────────────────
   Rows for entries from challenge.yml's ``extra_services`` are rendered
   immediately below their primary, sharing the same logical "card".  We
   collapse the visual gap between primary + extras and tint the extras
   subtly so it's clear they belong together.  Per-service columns
   (preset/identify/port/status/lightning/toggle) still vary per row.
*/
.chal-row--extra-service > td {
  border-top: 0 !important;
  background: rgba(124, 58, 237, .035);
}
.chal-row--extra-service:hover > td {
  background: rgba(124, 58, 237, .07) !important;
}
/* Slim top padding so extras hug their primary row visually. */
.chal-row--extra-service > td {
  padding-top: 4px;
  padding-bottom: 4px;
}
/* Indent the [svc] tag a touch so the grouping reads at a glance. */
.challenge-name-wrap--extra {
  display: inline-flex;
  align-items: center;
  padding-left: 18px;
  position: relative;
}
.challenge-name-wrap--extra::before {
  content: "↳";
  position: absolute;
  left: 2px;
  color: var(--text-dim);
  opacity: 0.55;
  font-size: 0.85em;
}
.challenge-service-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid rgba(168, 85, 247, .35);
  background: rgba(168, 85, 247, .08);
  color: var(--accent2);
  white-space: nowrap;
}

/* ─── Identify badge ───────────────────────────────────────────────── */

.id-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid var(--border2);
  background: rgba(255, 255, 255, .03);
  color: var(--text);
}
.id-token    { color: var(--accent2); border-color: rgba(168, 85, 247, .35); background: rgba(168, 85, 247, .06); }
.id-per_conn { color: var(--cyan);   border-color: rgba(34, 211, 238, .35); background: rgba(34, 211, 238, .06); }
.id-by_ip    { color: var(--muted);  border-color: rgba(148, 163, 184, .35); background: rgba(148, 163, 184, .06); }

/* ─── Action cell alignment placeholder ────────────────────────────── */

.btn-placeholder {
  display: inline-block;
  width: 30px;
  height: 1px;
}

/* Port number + prominent open-page action in the UI Port column */
.port-with-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
}
.btn-port-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 56px;
  min-height: 30px;
  padding: 6px 12px;
  border: 1px solid rgba(34, 211, 238, .55);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(34, 211, 238, .22), rgba(168, 85, 247, .18));
  box-shadow: 0 0 0 1px rgba(34, 211, 238, .08), 0 0 18px rgba(34, 211, 238, .12);
  color: var(--cyan);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .04em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  transition: border-color .15s, box-shadow .15s, color .15s, transform .15s;
}
.btn-port-link:hover,
.btn-port-link:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(34, 211, 238, .18), 0 0 22px rgba(34, 211, 238, .28);
  color: #ecfeff;
  transform: translateY(-1px);
  outline: none;
}

/* ─── Tree table specifics ─────────────────────────────────────────── */

.tbl-tree .dir-row td {
  padding-top: 8px;
  padding-bottom: 8px;
}

/* ─── Operation status bar ─────────────────────────────────────────────── */

.op-status {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 14px;
  animation: op-status-in .2s ease;
}

@keyframes op-status-in {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: none; }
}

.op-status--ok {
  border-color: rgba(52, 211, 153, .4);
  background: rgba(52, 211, 153, .06);
}

.op-status--err {
  border-color: rgba(248, 113, 113, .4);
  background: rgba(248, 113, 113, .06);
}

.op-status--progress {
  border-color: rgba(34, 211, 238, .4);
  background: rgba(34, 211, 238, .06);
}

.op-status__content {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}

.op-status__spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--border2);
  border-top-color: var(--cyan);
  border-radius: 50%;
  animation: op-spin .7s linear infinite;
  flex-shrink: 0;
}

.op-status--ok .op-status__spinner,
.op-status--err .op-status__spinner {
  display: none;
}

@keyframes op-spin {
  to { transform: rotate(360deg); }
}

.op-status__msg {
  font-size: 13px;
  color: var(--text);
}

.op-status--ok .op-status__msg { color: var(--green); }
.op-status--err .op-status__msg { color: var(--red); }

.op-status__progress {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.op-status__close {
  background: none;
  border: none;
  color: var(--dim);
  font-size: 13px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  line-height: 1;
}
.op-status__close:hover { color: var(--text); background: var(--border); }

/* ─── Connect (lightning) button ─────────────────────────────────────── */

.btn-connect {
  background: none;
  border: 1px solid var(--border);
  color: var(--dim);
  font-size: 13px;
  padding: 1px 5px;
  border-radius: 4px;
  cursor: pointer;
  transition: color .15s, border-color .15s, box-shadow .15s;
  line-height: 1.2;
}
.btn-connect:hover {
  color: #f59e0b;
  border-color: #f59e0b;
}
.btn-connect:disabled {
  opacity: .4;
  cursor: wait;
}

.btn-connect--active {
  color: #fbbf24;
  border-color: #f59e0b;
  box-shadow: 0 0 6px rgba(245, 158, 11, .35);
  animation: connect-pulse 1.5s ease-in-out infinite;
}

@keyframes connect-pulse {
  0%, 100% { box-shadow: 0 0 4px rgba(245, 158, 11, .25); }
  50%      { box-shadow: 0 0 10px rgba(245, 158, 11, .55); }
}

/* ─── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .main { padding: 20px 16px; }
  .topbar {
    height: auto;
    min-height: 56px;
    padding: 12px 16px;
    gap: 12px;
    flex-wrap: wrap;
  }
  .topbar-project {
    position: static;
    transform: none;
    order: 3;
    width: 100%;
    max-width: none;
  }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .tbl th,
  .tbl td { padding-left: 12px; padding-right: 12px; }
  .global-controls { gap: 12px; }
}