:root {
  --bg:       #ffffff;
  --bg2:      #f7f7f7;
  --bg3:      #eeeeee;
  --border:   #e4e4e4;
  --border2:  #cccccc;
  --text:     #111111;
  --text2:    #555555;
  --text3:    #aaaaaa;
  --green:    #16a34a;
  --red:      #dc2626;
  --yellow:   #ca8a04;
  --r:        6px;
  --rs:       4px;
}

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

html { font-size: 14px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Navigation ─────────────────────────────────────────── */
nav {
  height: 52px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 8px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.nav-brand {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.2px;
  margin-right: 16px;
}

nav a.nav-link {
  font-size: 13px;
  color: var(--text2);
  text-decoration: none;
  padding: 5px 10px;
  border-radius: var(--rs);
  transition: color .12s, background .12s;
}

nav a.nav-link:hover { color: var(--text); background: var(--bg3); }
nav a.nav-link.active { color: var(--text); background: var(--bg3); }

/* ── Layout ──────────────────────────────────────────────── */
main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 28px 24px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.page-title { font-size: 18px; font-weight: 600; }

/* ── Stat cards ──────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 18px 20px;
}

.stat-label {
  font-size: 11px;
  font-weight: 500;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 8px;
}

.stat-value {
  font-size: 26px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
}

/* ── Card ────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 20px 24px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 16px;
}

/* ── Table ───────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; }

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

thead th {
  text-align: left;
  font-size: 11px;
  font-weight: 500;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

tbody td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--bg3); }

/* ── Badges ──────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

.badge::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
}

.badge-running    { color: var(--green);  background: rgba(34,197,94,.12); }
.badge-connecting { color: var(--yellow); background: rgba(234,179,8,.12); }
.badge-stopped    { color: var(--text3);  background: var(--bg3); }
.badge-error      { color: var(--red);    background: rgba(239,68,68,.12); }

/* ── Log level ───────────────────────────────────────────── */
.lv-info    { color: var(--text2); }
.lv-success { color: var(--green); }
.lv-warning { color: var(--yellow); }
.lv-error   { color: var(--red); }

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--rs);
  border: 1px solid transparent;
  cursor: pointer;
  transition: opacity .12s, background .12s, color .12s;
  font-family: inherit;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.4;
}

.btn:disabled { opacity: .35; pointer-events: none; }

.btn-primary {
  background: #fff;
  color: #000;
  border-color: #fff;
}
.btn-primary:hover { opacity: .88; }

.btn-ghost {
  background: transparent;
  color: var(--text2);
  border-color: var(--border);
}
.btn-ghost:hover { background: var(--bg3); color: var(--text); }

.btn-danger {
  background: transparent;
  color: var(--red);
  border-color: rgba(239,68,68,.3);
}
.btn-danger:hover { background: rgba(239,68,68,.08); }

.btn-sm { padding: 4px 9px; font-size: 11px; }

.btn-group { display: flex; gap: 6px; flex-wrap: wrap; }

/* ── Forms ───────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px 20px;
}

.form-group { display: flex; flex-direction: column; gap: 5px; }

label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text2);
}

input[type=text], input[type=password], input[type=number], input[type=search],
textarea, select {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--rs);
  padding: 7px 10px;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color .12s;
  width: 100%;
}

input:focus, textarea:focus, select:focus { border-color: var(--border2); }

textarea { resize: vertical; min-height: 100px; line-height: 1.5; }

.input-row { display: flex; gap: 8px; align-items: center; }
.input-row input { flex: 1; }

.hint { font-size: 11px; color: var(--text3); margin-top: 2px; }

/* ── Upload zone ─────────────────────────────────────────── */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--r);
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color .15s, background .15s;
}

.upload-zone:hover, .upload-zone.drag-over {
  border-color: var(--border2);
  background: var(--bg3);
}

.upload-icon { font-size: 24px; margin-bottom: 8px; opacity: .5; }
.upload-text { font-size: 13px; color: var(--text2); }
.upload-sub  { font-size: 11px; color: var(--text3); margin-top: 4px; }

/* ── Log feed (dashboard) ────────────────────────────────── */
.log-feed {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 14px;
  height: 240px;
  overflow-y: auto;
  font-family: 'Consolas', 'SF Mono', monospace;
  font-size: 11.5px;
  line-height: 1.65;
  scroll-behavior: smooth;
}

.log-entry { display: flex; gap: 10px; }
.log-ts { color: var(--text3); flex-shrink: 0; }
.log-text { color: var(--text2); word-break: break-all; }

/* ── Filter bar ──────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
  margin-bottom: 16px;
}

.filter-bar input[type=search] { flex: 1; min-width: 160px; max-width: 300px; }

.filter-tabs { display: flex; gap: 4px; }

.filter-tab {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: var(--rs);
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text2);
  cursor: pointer;
  transition: all .12s;
  font-family: inherit;
}

.filter-tab:hover { background: var(--bg3); color: var(--text); }
.filter-tab.active { background: var(--bg3); color: var(--text); border-color: var(--border2); }

/* ── Pagination ──────────────────────────────────────────── */
.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  font-size: 12px;
  color: var(--text2);
}

.pagination-btns { display: flex; gap: 6px; }

/* ── Separator ───────────────────────────────────────────── */
hr { border: none; border-top: 1px solid var(--border); margin: 20px 0; }

/* ── Section heading ─────────────────────────────────────── */
.section-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: .6px;
  margin-bottom: 14px;
  margin-top: 4px;
}

/* ── Empty state ─────────────────────────────────────────── */
.empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--text3);
  font-size: 13px;
}

/* ── Toast ───────────────────────────────────────────────── */
#toast-root {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: flex;
  flex-direction: column-reverse;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--text);
  max-width: 300px;
  box-shadow: 0 4px 16px rgba(0,0,0,.5);
  animation: toastIn .18s ease;
  pointer-events: auto;
}

.toast-success { border-left: 3px solid var(--green); }
.toast-error   { border-left: 3px solid var(--red);   }
.toast-info    { border-left: 3px solid var(--border2); }

@keyframes toastIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0);    }
}

/* ── Spinner ─────────────────────────────────────────────── */
.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--text);
  border-radius: 50%;
  animation: spin .6s linear infinite;
  vertical-align: middle;
}

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

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 640px) {
  nav { padding: 0 14px; }
  main { padding: 18px 14px; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: 1fr; }
}