:root {
  --bg:        #0d1b2a;
  --bg2:       #162032;
  --bg3:       #1e2d42;
  --card:      #1a2c3e;
  --border:    #2a3f57;
  --primary:   #00a8e8;
  --primary2:  #0077b6;
  --accent:    #00d4aa;
  --success:   #00e676;
  --warning:   #ffab40;
  --danger:    #ff5252;
  --text:      #d0e4f5;
  --text2:     #7fa8c9;
  --text3:     #4a6a85;
  --mono:      'Consolas', 'Courier New', monospace;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  min-height: 100vh;
}

/* ---- HEADER ---- */
.app-header {
  background: linear-gradient(135deg, #0a1520 0%, var(--bg2) 100%);
  border-bottom: 2px solid var(--primary);
  padding: 0 24px;
  display: flex;
  align-items: center;
  height: 56px;
  gap: 16px;
}
.app-header .logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  text-transform: uppercase;
  white-space: nowrap;
}
.app-header .logo span { color: var(--accent); }
.app-header .subtitle {
  font-size: 11px;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.header-status { margin-left: auto; display: flex; gap: 12px; align-items: center; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--text3); display: inline-block; }
.status-dot.ok  { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-dot.err { background: var(--danger);  box-shadow: 0 0 6px var(--danger); }
.status-label { font-size: 11px; color: var(--text2); }

/* ---- LAYOUT ---- */
.app-body { display: flex; height: calc(100vh - 56px); overflow: hidden; }

.sidebar {
  width: 280px;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}

.main-content { flex: 1; overflow: hidden; display: flex; flex-direction: column; }

/* ---- SIDEBAR ---- */
.sidebar-section { padding: 16px; border-bottom: 1px solid var(--border); }
.sidebar-section h3 {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text3);
  margin-bottom: 12px;
}

.form-group { margin-bottom: 10px; }
.form-label {
  display: block;
  font-size: 11px;
  color: var(--text2);
  margin-bottom: 4px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.form-control {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text);
  padding: 6px 8px;
  font-size: 13px;
  transition: border-color 0.15s;
  font-family: inherit;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0,168,232,.15);
}
.form-control::placeholder { color: var(--text3); }
select.form-control { cursor: pointer; }

.input-row { display: flex; gap: 6px; }
.input-row .form-control { flex: 1; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-primary   { background: var(--primary);  color: #fff; }
.btn-primary:hover { background: #0090cc; }
.btn-success   { background: var(--success);  color: #000; }
.btn-success:hover { filter: brightness(1.1); }
.btn-warning   { background: var(--warning);  color: #000; }
.btn-danger    { background: var(--danger);   color: #fff; }
.btn-danger:hover { filter: brightness(1.1); }
.btn-ghost     { background: transparent; color: var(--text2); border: 1px solid var(--border); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-accent    { background: var(--accent);   color: #000; }
.btn-sm        { padding: 4px 10px; font-size: 12px; }
.btn:disabled  { opacity: 0.4; cursor: not-allowed; }
.btn-block     { width: 100%; justify-content: center; }

/* ---- TABS ---- */
.tab-nav {
  display: flex;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  gap: 4px;
}
.tab-btn {
  padding: 12px 16px;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text2);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.15s;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }

.tab-pane { display: none; flex: 1; overflow: hidden; flex-direction: column; }
.tab-pane.active { display: flex; }

/* ---- PANELS ---- */
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
}
.panel-header {
  background: var(--bg3);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.panel-title { font-weight: 700; font-size: 13px; color: var(--text); }
.panel-body { padding: 14px; }

/* ---- WALK TAB ---- */
.walk-layout { display: flex; flex-direction: column; height: 100%; overflow: hidden; }
.walk-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.walk-params-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.param-group { display: flex; flex-direction: column; gap: 3px; }
.param-label { font-size: 10px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.5px; }
.param-input { width: 80px; }
.oid-input { width: 220px; font-family: var(--mono); }

.walk-stats {
  display: flex;
  gap: 20px;
  padding: 8px 16px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}
.stat-item { display: flex; align-items: center; gap: 6px; }
.stat-label { color: var(--text3); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.stat-value { color: var(--accent); font-weight: 700; font-family: var(--mono); }
.stat-value.running { color: var(--warning); animation: pulse 1s infinite; }

@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }

.walk-results { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
.results-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.results-toolbar input { flex: 1; max-width: 300px; }

.results-table-wrap { flex: 1; overflow: auto; }
table.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
table.results-table th {
  background: var(--bg3);
  color: var(--text2);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 8px 12px;
  text-align: left;
  position: sticky;
  top: 0;
  z-index: 1;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
  user-select: none;
  cursor: pointer;
}
table.results-table th:hover { color: var(--primary); }
table.results-table td {
  padding: 5px 12px;
  border-bottom: 1px solid rgba(42,63,87,.4);
  font-family: var(--mono);
  vertical-align: top;
  white-space: nowrap;
}
table.results-table tr:hover td { background: rgba(0,168,232,.06); }
.oid-col  { color: var(--text2); max-width: 300px; overflow: hidden; text-overflow: ellipsis; }
.type-col { width: 100px; }
.val-col  { color: var(--text); max-width: 400px; overflow: hidden; text-overflow: ellipsis; }

.badge {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
}
.badge-string  { background: rgba(0,214,170,.15); color: var(--accent); }
.badge-integer { background: rgba(0,168,232,.15); color: var(--primary); }
.badge-counter { background: rgba(255,171,64,.15); color: var(--warning); }
.badge-gauge   { background: rgba(0,230,118,.15); color: var(--success); }
.badge-oid     { background: rgba(180,120,255,.15); color: #c090ff; }
.badge-hex     { background: rgba(255,82,82,.15);  color: var(--danger); }
.badge-default { background: var(--bg3); color: var(--text3); }

/* ---- LIVE MONITOR ---- */
.live-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  padding: 16px;
  overflow-y: auto;
}
.live-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.live-card-title {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text3);
  font-weight: 600;
}
.live-card-value {
  font-size: 28px;
  font-weight: 800;
  font-family: var(--mono);
  color: var(--accent);
  line-height: 1;
}
.live-card-sub { font-size: 12px; color: var(--text2); }
.live-card-bar { background: var(--bg3); border-radius: 4px; height: 8px; overflow: hidden; }
.live-card-fill { height: 100%; border-radius: 4px; transition: width .5s, background .5s; background: var(--accent); }
.live-card-fill.warn { background: var(--warning); }
.live-card-fill.crit { background: var(--danger); }

.live-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
}
.live-refresh-label { font-size: 12px; color: var(--text2); }

.chart-wrap { padding: 16px; }
canvas#cpuChart { max-height: 150px; }

/* ---- MIB BROWSER ---- */
.browser-layout { display: flex; height: 100%; overflow: hidden; }
.browser-sidebar {
  width: 320px;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  flex-shrink: 0;
}
.browser-main { flex: 1; overflow-y: auto; padding: 16px; }
.browser-list { flex: 1; overflow-y: auto; }
.mib-item {
  padding: 8px 12px;
  border-bottom: 1px solid rgba(42,63,87,.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}
.mib-item:hover { background: var(--bg3); }
.mib-item.active { background: rgba(0,168,232,.12); border-left: 3px solid var(--primary); }
.mib-item-name { font-weight: 600; }
.mib-item-count { margin-left: auto; font-size: 11px; color: var(--text3); }

.oid-list-item {
  padding: 6px 12px;
  border-bottom: 1px solid rgba(42,63,87,.3);
  cursor: pointer;
  font-size: 12px;
}
.oid-list-item:hover { background: var(--bg3); }
.oid-list-item.active { background: rgba(0,168,232,.1); }
.oid-name { color: var(--primary); font-weight: 600; }
.oid-numeric { color: var(--text3); font-family: var(--mono); font-size: 11px; }

.detail-section { margin-bottom: 16px; }
.detail-row { display: flex; gap: 12px; padding: 6px 0; border-bottom: 1px solid rgba(42,63,87,.3); }
.detail-key { width: 120px; flex-shrink: 0; font-size: 11px; color: var(--text3); text-transform: uppercase; font-weight: 600; }
.detail-val { flex: 1; font-family: var(--mono); font-size: 12px; word-break: break-all; }
.detail-desc { color: var(--text2); font-family: inherit; font-size: 13px; line-height: 1.5; }

.get-result-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 13px;
  min-height: 40px;
  color: var(--success);
}

/* ---- HISTORY ---- */
.history-table-wrap { flex: 1; overflow: auto; padding: 16px; }
.history-table { width: 100%; border-collapse: collapse; font-size: 12px; }
.history-table th {
  background: var(--bg3);
  color: var(--text2);
  font-size: 10px;
  text-transform: uppercase;
  padding: 8px 12px;
  text-align: left;
  position: sticky;
  top: 0;
  border-bottom: 1px solid var(--border);
}
.history-table td {
  padding: 7px 12px;
  border-bottom: 1px solid rgba(42,63,87,.4);
  font-family: var(--mono);
  vertical-align: middle;
}
.history-table tr:hover td { background: rgba(0,168,232,.05); }
.status-badge-done  { color: var(--success); }
.status-badge-error { color: var(--danger);  }
.status-badge-running { color: var(--warning); }
.duration-fast { color: var(--success); }
.duration-med  { color: var(--warning); }
.duration-slow { color: var(--danger); }

/* ---- PROFILE MODAL ---- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 480px;
  max-width: 95vw;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-size: 15px; font-weight: 700; }
.modal-close { background: none; border: none; color: var(--text2); cursor: pointer; font-size: 20px; }
.modal-body { padding: 20px; }
.modal-footer { padding: 12px 20px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ---- SNMPV3 FIELDS ---- */
.v3-fields { display: none; }
.v3-fields.visible { display: block; }

/* ---- SCROLLBAR ---- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border); }

/* ---- MISC ---- */
.empty-state { text-align: center; padding: 48px; color: var(--text3); }
.empty-state .icon { font-size: 48px; margin-bottom: 12px; opacity: 0.4; }
.empty-state p { font-size: 14px; }

.tag-v1  { color: #aaa; }
.tag-v2c { color: var(--primary); }
.tag-v3  { color: var(--accent); }

.spinner {
  display: inline-block;
  width: 14px; height: 14px;
  border: 2px solid rgba(0,168,232,.3);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

.alert {
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 13px;
  margin: 8px 0;
}
.alert-info    { background: rgba(0,168,232,.1); border: 1px solid rgba(0,168,232,.3); color: var(--primary); }
.alert-success { background: rgba(0,230,118,.1); border: 1px solid rgba(0,230,118,.3); color: var(--success); }
.alert-danger  { background: rgba(255,82,82,.1);  border: 1px solid rgba(255,82,82,.3); color: var(--danger); }
.alert-warning { background: rgba(255,171,64,.1); border: 1px solid rgba(255,171,64,.3); color: var(--warning); }

.text-mono { font-family: var(--mono); }
.text-muted { color: var(--text3); }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.flex { display: flex; }
.gap-8 { gap: 8px; }
.ml-auto { margin-left: auto; }

/* Progress bar animation for walk */
.walk-progress {
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  background-size: 200% 100%;
  animation: progress-anim 1.5s linear infinite;
  border-radius: 2px;
}
@keyframes progress-anim { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .sidebar { width: 240px; }
}
@media (max-width: 700px) {
  .app-body { flex-direction: column; }
  .sidebar  { width: 100%; height: auto; max-height: 300px; }
}