:root {
    --bg-deep:     #0f1e30;
    --bg-station:  #162b40;
    --bg-panel:    #1a3248;
    --bg-card:     #1e3a52;
    --bg-card2:    #223d56;
    --border:      #2a4d6a;
    --border-bright: #345e7e;
    --amber:       #f5a623;
    --amber-dim:   #c07d10;
    --amber-glow:  rgba(245,166,35,0.12);
    --green:       #4caf8a;
    --green-dim:   #2d7a5f;
    --green-glow:  rgba(76,175,138,0.12);
    --red:         #e05c5c;
    --red-dim:     #a03030;
    --red-glow:    rgba(224,92,92,0.12);
    --blue:        #378add;
    --blue-dim:    #1a5a9a;
    --text-primary:   #e8e0cc;
    --text-secondary: #b8ccda;
    --text-muted:     #8aabc0;
    --text-dim:       #5a7a90;
    --scanline: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 2px,
      rgba(0,0,0,0.15) 2px,
      rgba(0,0,0,0.15) 4px
    );
  }

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

  body {
    background: var(--bg-deep);
    color: var(--text-primary);
    font-family: 'Rajdhani', sans-serif;
    font-size: 16px;
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* Star field background */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
      radial-gradient(1px 1px at 10% 15%, rgba(255,255,255,0.4) 0%, transparent 100%),
      radial-gradient(1px 1px at 25% 60%, rgba(255,255,255,0.25) 0%, transparent 100%),
      radial-gradient(1px 1px at 40% 30%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(1px 1px at 55% 80%, rgba(255,255,255,0.2) 0%, transparent 100%),
      radial-gradient(1px 1px at 70% 20%, rgba(255,255,255,0.35) 0%, transparent 100%),
      radial-gradient(1px 1px at 80% 55%, rgba(255,255,255,0.25) 0%, transparent 100%),
      radial-gradient(1px 1px at 90% 40%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(1px 1px at 15% 90%, rgba(255,255,255,0.2) 0%, transparent 100%),
      radial-gradient(1px 1px at 60% 10%, rgba(255,255,255,0.4) 0%, transparent 100%),
      radial-gradient(1px 1px at 35% 45%, rgba(255,255,255,0.15) 0%, transparent 100%),
      radial-gradient(1px 1px at 85% 75%, rgba(255,255,255,0.3) 0%, transparent 100%),
      radial-gradient(1px 1px at 5% 50%, rgba(255,255,255,0.2) 0%, transparent 100%),
      radial-gradient(1px 1px at 95% 85%, rgba(255,255,255,0.25) 0%, transparent 100%),
      radial-gradient(1px 1px at 48% 95%, rgba(255,255,255,0.2) 0%, transparent 100%),
      radial-gradient(1px 1px at 72% 65%, rgba(255,255,255,0.15) 0%, transparent 100%);
    pointer-events: none;
    z-index: 0;
  }

  /* Login overlay */
  #login-screen {
    position: fixed;
    inset: 0;
    background: var(--bg-deep);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    flex-direction: column;
    gap: 32px;
  }

  #login-screen.hidden { display: none; }

  .login-logo {
    text-align: center;
  }

  .login-logo .station-name {
    font-family: 'Orbitron', monospace;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.4em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 8px;
  }

  .login-logo .onibi-title {
    font-family: 'Orbitron', monospace;
    font-size: 42px;
    font-weight: 700;
    color: var(--amber);
    letter-spacing: 0.15em;
    text-shadow: 0 0 40px rgba(245,166,35,0.3);
  }

  .login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-top: 2px solid var(--amber);
    padding: 32px;
    width: 320px;
    position: relative;
  }

  .login-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--scanline);
    pointer-events: none;
    opacity: 0.4;
  }

  .login-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    color: var(--text-muted);
    letter-spacing: 0.2em;
    margin-bottom: 8px;
    text-transform: uppercase;
  }

  .login-input {
    width: 100%;
    background: var(--bg-station);
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-family: 'Share Tech Mono', monospace;
    font-size: 14px;
    padding: 10px 12px;
    outline: none;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    transition: border-color 0.2s;
  }

  .login-input:focus { border-color: var(--amber); }

  .login-error {
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    color: var(--red);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
    min-height: 16px;
  }

  /* Main panel */
  #main-panel {
    position: relative;
    z-index: 1;
    opacity: 0;
    transition: opacity 0.5s;
  }
  #main-panel.visible { opacity: 1; }

  /* Header */
  .header {
    background: var(--bg-station);
    border-bottom: 1px solid var(--border);
    padding: 0 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    position: relative;
  }

  .header::before {
    content: '';
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--amber), transparent);
    opacity: 0.4;
  }

  .header-left {
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .header-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--amber);
    box-shadow: 0 0 8px var(--amber);
    animation: pulse-amber 2s ease-in-out infinite;
  }

  @keyframes pulse-amber {
    0%, 100% { opacity: 1; box-shadow: 0 0 8px var(--amber); }
    50% { opacity: 0.5; box-shadow: 0 0 4px var(--amber); }
  }

  .header-title {
    font-family: 'Orbitron', monospace;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.25em;
    color: var(--text-primary);
  }

  .header-sub {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 0.2em;
  }

  .header-right {
    display: flex;
    align-items: center;
    gap: 24px;
  }

  .header-time {
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    color: var(--text-muted);
    letter-spacing: 0.1em;
  }

  .status-pill {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 14px;
    border: 1px solid var(--border);
    background: var(--bg-card);
    font-family: 'Share Tech Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.15em;
  }

  .status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
  }

  .status-dot.online {
    background: var(--green);
    box-shadow: 0 0 6px var(--green);
    animation: pulse-green 2s ease-in-out infinite;
  }

  .status-dot.offline {
    background: var(--red);
  }

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

  /* Layout */
  .container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 32px 24px;
  }

  .grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
  }

  .grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    margin-bottom: 16px;
  }

  /* Cards */
  .card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 20px 24px;
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--scanline);
    pointer-events: none;
    opacity: 0.3;
  }

  .card-accent-amber { border-top: 2px solid var(--amber); }
  .card-accent-green { border-top: 2px solid var(--green); }
  .card-accent-red { border-top: 2px solid var(--red); }
  .card-accent-blue { border-top: 2px solid var(--blue); }

  .card-label {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: 10px;
  }

  .card-value {
    font-family: 'Orbitron', monospace;
    font-size: 28px;
    font-weight: 600;
    color: var(--amber);
    letter-spacing: 0.05em;
    line-height: 1;
  }

  .card-value.green { color: var(--green); }
  .card-value.red { color: var(--red); }
  .card-value.muted { color: var(--text-muted); font-size: 18px; }

  .card-sub {
    font-family: 'Rajdhani', sans-serif;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
    letter-spacing: 0.05em;
  }

  /* Section header */
  .section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
  }

  .section-title {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    color: var(--text-muted);
    letter-spacing: 0.3em;
    text-transform: uppercase;
  }

  .section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border), transparent);
  }

  /* Buttons */
  .btn {
    font-family: 'Orbitron', monospace;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2em;
    padding: 12px 24px;
    border: 1px solid;
    cursor: pointer;
    transition: all 0.15s;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
    background: transparent;
  }

  .btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: currentColor;
    opacity: 0;
    transition: opacity 0.15s;
  }

  .btn:hover::before { opacity: 0.08; }
  .btn:active { transform: scale(0.97); }
  .btn:disabled { opacity: 0.35; cursor: not-allowed; }
  .btn:disabled:hover::before { opacity: 0; }

  .btn-amber {
    color: var(--amber);
    border-color: var(--amber);
    text-shadow: 0 0 8px rgba(245,166,35,0.3);
  }

  .btn-amber:hover:not(:disabled) {
    background: var(--amber-glow);
    box-shadow: 0 0 16px rgba(245,166,35,0.15), inset 0 0 16px rgba(245,166,35,0.05);
  }

  .btn-red {
    color: var(--red);
    border-color: var(--red);
  }

  .btn-red:hover:not(:disabled) {
    background: var(--red-glow);
    box-shadow: 0 0 16px rgba(224,92,92,0.15);
  }

  .btn-green {
    color: var(--green);
    border-color: var(--green);
  }

  .btn-green:hover:not(:disabled) {
    background: var(--green-glow);
    box-shadow: 0 0 16px rgba(76,175,138,0.15);
  }

  .btn-ghost {
    color: var(--text-muted);
    border-color: var(--border);
  }

  .btn-ghost:hover:not(:disabled) {
    color: var(--text-secondary);
    border-color: var(--border-bright);
  }

  .btn-full { width: 100%; }

  /* Controls card */
  .controls-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  /* Maintenance toggle */
  .maintenance-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
  }

  .maintenance-row:last-child { border-bottom: none; }

  .maintenance-label {
    font-family: 'Rajdhani', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
  }

  .maintenance-desc {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    margin-top: 2px;
  }

  .toggle {
    width: 44px;
    height: 24px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--bg-station);
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
    flex-shrink: 0;
  }

  .toggle::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--text-dim);
    transition: all 0.2s;
  }

  .toggle.on {
    border-color: var(--amber);
    background: rgba(245,166,35,0.1);
  }

  .toggle.on::after {
    left: 23px;
    background: var(--amber);
    box-shadow: 0 0 6px var(--amber);
  }

  /* Log viewer */
  .log-container {
    background: var(--bg-station);
    border: 1px solid var(--border);
    height: 320px;
    overflow-y: auto;
    padding: 12px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    line-height: 1.8;
    position: relative;
  }

  .log-container::-webkit-scrollbar { width: 4px; }
  .log-container::-webkit-scrollbar-track { background: var(--bg-station); }
  .log-container::-webkit-scrollbar-thumb { background: var(--border-bright); }

  .log-line { color: var(--text-muted); }
  .log-line.shutdown { color: var(--red); }
  .log-line.empty { color: var(--text-dim); }
  .log-line.active { color: var(--green); }
  .log-line.maintenance { color: var(--amber); }
  .log-line.separator { color: var(--text-dim); border-top: 1px solid var(--border); padding-top: 4px; margin-top: 4px; }
  .log-line.error { color: var(--red); }
  .log-line.ok { color: var(--blue); }

  .log-empty {
    color: var(--text-dim);
    font-size: 11px;
    letter-spacing: 0.1em;
    padding: 8px 0;
  }

  .log-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
  }

  /* Notification */
  .notif {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg-card2);
    border: 1px solid var(--border);
    border-left: 3px solid var(--amber);
    padding: 12px 18px;
    font-family: 'Share Tech Mono', monospace;
    font-size: 12px;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    z-index: 200;
    transform: translateX(120%);
    transition: transform 0.3s;
    max-width: 300px;
  }

  .notif.show { transform: translateX(0); }
  .notif.success { border-left-color: var(--green); }
  .notif.error { border-left-color: var(--red); }

  /* Spinner */
  .spinner {
    display: inline-block;
    width: 12px;
    height: 12px;
    border: 1px solid var(--border);
    border-top-color: var(--amber);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
    margin-right: 6px;
  }

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

  /* Uptime display */
  .uptime-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    margin-top: 8px;
  }

  .uptime-seg {
    text-align: center;
  }

  .uptime-num {
    font-family: 'Orbitron', monospace;
    font-size: 22px;
    font-weight: 600;
    color: var(--amber);
    line-height: 1;
  }

  .uptime-unit {
    font-family: 'Share Tech Mono', monospace;
    font-size: 9px;
    color: var(--text-dim);
    letter-spacing: 0.2em;
    margin-top: 2px;
  }

  .uptime-sep {
    font-family: 'Orbitron', monospace;
    font-size: 18px;
    color: var(--text-dim);
    align-self: start;
    padding-top: 2px;
    text-align: center;
  }

  /* Coord display */
  .coords {
    font-family: 'Share Tech Mono', monospace;
    font-size: 10px;
    color: var(--text-dim);
    letter-spacing: 0.1em;
    text-align: right;
  }

  /* Decorative corner brackets */
  .bracket-card {
    position: relative;
  }

  .bracket-card::after {
    content: '';
    position: absolute;
    bottom: 8px;
    right: 8px;
    width: 12px;
    height: 12px;
    border-bottom: 1px solid var(--border-bright);
    border-right: 1px solid var(--border-bright);
  }

  .full-width { grid-column: 1 / -1; }

  /* Responsive */
  @media (max-width: 700px) {
    .grid, .grid-3 { grid-template-columns: 1fr; }
    .controls-grid { grid-template-columns: 1fr; }
    .header { padding: 0 16px; }
    .container { padding: 16px; }
    .header-time { display: none; }
  }