:root {
    --bg: #f0f4f9;
    --surface: #ffffff;
    --border: #d0dae8;
    --text: #0a1628;
    --text-muted: #6b7a95;
    --accent: #003465;
    --accent-light: #e6edf5;
    --accent-hover: #002450;
    --red: #e72742;
    --red-light: #fdeef0;
    --red-hover: #c41e35;
    --danger: #e72742;
    --danger-light: #fdeef0;
    --cell-bg: #f7f9fc;
    --header-bg: #003465;
    --header-text: #ffffff;
    --shadow: 0 1px 3px rgba(0,52,101,0.08), 0 4px 16px rgba(0,52,101,0.08);
  }

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

  body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    font-size: 14px;
    padding-bottom: 56px;
  }

  /* HEADER */
  header {
    background: var(--header-bg);
    color: var(--header-text);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    height: 62px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 3px solid var(--red);
    box-shadow: 0 2px 12px rgba(0,52,101,0.18);
  }

  .logo {
    font-family: 'DM Mono', monospace;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--header-text);
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .header-logo {
    height: 38px;
    width: auto;
    display: block;
    mix-blend-mode: screen;
  }

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

  /* NAVIGATION */
  .main-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 24px;
  }

  .nav-link {
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    transition: all 0.15s;
    font-family: 'DM Sans', sans-serif;
    white-space: nowrap;
  }

  .nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.08);
  }

  .nav-link.active {
    color: #fff;
    background: rgba(255,255,255,0.12);
    border-bottom: 2px solid var(--red);
  }

  .user-badge {
    font-size: 12px;
    color: rgba(255,255,255,0.6);
    font-family: 'DM Mono', monospace;
  }

  .btn {
    padding: 7px 16px;
    border-radius: 6px;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  .btn-primary {
    background: var(--red);
    color: #fff;
  }
  .btn-primary:hover { background: var(--red-hover); }

  .btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
  }
  .btn-outline:hover { background: var(--accent-light); border-color: var(--accent); color: var(--accent); }

  .btn-ghost {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.85);
    font-size: 13px;
  }
  .btn-ghost:hover { border-color: rgba(255,255,255,0.6); color: #fff; background: rgba(255,255,255,0.08); }

  .btn-danger {
    background: var(--danger-light);
    color: var(--danger);
    border: 1px solid #f5c0c8;
  }
  .btn-danger:hover { background: #fbd5da; }

  .btn-sm { padding: 4px 10px; font-size: 12px; }

  /* PAGES */
  .page { display: none; }
  .page.active { display: block; }

  /* MAIN PAGE */
  .main-content {
    max-width: 680px;
    margin: 80px auto;
    padding: 0 24px;
    text-align: center;
  }

  .main-hero {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 64px 48px;
    box-shadow: var(--shadow);
    border-top: 4px solid var(--red);
  }

  .main-hero h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.5px;
    color: var(--accent);
  }

  .main-hero p {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 40px;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
  }

  /* LOGIN FORM */
  .login-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 320px;
    margin: 0 auto;
  }

  .input-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
    text-align: left;
  }

  .input-group label {
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
  }

  .input-group input {
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: 'DM Sans', sans-serif;
    font-size: 14px;
    background: var(--cell-bg);
    color: var(--text);
    transition: border-color 0.15s;
    outline: none;
  }

  .input-group input:focus {
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0,52,101,0.08);
  }

  .login-error {
    color: var(--danger);
    font-size: 12px;
    text-align: center;
    display: none;
  }

  /* USER PAGE */
  .page-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
  }

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

  .page-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.3px;
    color: var(--accent);
  }

  .page-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
  }

  /* TABLE */
  .table-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
  }

  .data-table th {
    background: var(--accent);
    color: rgba(255,255,255,0.9);
    padding: 11px 14px;
    text-align: center;
    font-family: 'DM Sans', sans-serif;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.04em;
    border-right: 1px solid rgba(255,255,255,0.1);
    white-space: nowrap;
    text-transform: uppercase;
  }

  .data-table th.sortable {
    cursor: pointer;
    user-select: none;
  }
  .data-table th.sortable:hover { background: #004a8f; }
  .sort-icon { margin-left: 5px; opacity: 0.5; font-size: 10px; }
  .sort-icon.active { opacity: 1; }
  .data-table th:last-child { border-right: none; }

  .data-table td {
    padding: 0;
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .data-table td:last-child { border-right: none; }
  .data-table tr:last-child td { border-bottom: none; }
  .data-table tr:hover td { background: #f0f5fb; }

  .cell-input {
    width: 100%;
    padding: 9px 14px;
    border: none;
    background: transparent;
    font-family: 'DM Sans', sans-serif;
    font-size: 13px;
    color: var(--text);
    outline: none;
    transition: background 0.1s;
  }

  .cell-input:focus {
    background: #eef4fb;
    box-shadow: inset 0 0 0 2px var(--accent);
  }

  .cell-input[readonly] {
    color: var(--text);
    cursor: default;
    pointer-events: none;
  }

  .cell-select {
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23003465' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 28px !important;
  }

  .status-select {
    width: 115px;
    padding: 5px 28px 5px 10px !important;
    border-radius: 20px;
    border: 1.5px solid var(--border);
    font-size: 12px;
    font-weight: 600;
    font-family: 'DM Sans', sans-serif;
    background-color: transparent;
    outline: none;
    transition: border-color 0.15s;
  }

  .status-select:focus { border-color: var(--accent); }

  .status-pill {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    min-width: 90px;
    text-align: center;
    letter-spacing: 0.02em;
  }

  .status-active    { background: #e6f9e6; color: #1a6b1a; border: 1.5px solid #b6ddb6; }
  .status-suspended { background: #fff3e0; color: #8a4800; border: 1.5px solid #f0c080; }
  .status-fired     { background: #fdeef0; color: #c41e35; border: 1.5px solid #f5b0bb; }
  .status-empty     { background: var(--cell-bg); color: var(--text-muted); border: 1.5px solid var(--border); }

  .status-pill.clickable-available {
    cursor: pointer;
    transition: box-shadow 0.15s, transform 0.1s;
  }
  .status-pill.clickable-available:hover {
    box-shadow: 0 0 0 3px rgba(26,107,26,0.18);
    transform: scale(1.04);
  }

  /* Reserve inline panel — inserted as a full-width row below the selected row */
  .reserve-panel-row td {
    padding: 0 !important;
    border-bottom: 2px solid #003465 !important;
  }
  .reserve-panel {
    background: linear-gradient(135deg, #f0faf0 0%, #e8f4ff 100%);
    border-top: 1.5px solid #b6ddb6;
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 18px;
    flex-wrap: wrap;
    animation: slidePanelIn 0.18s ease;
  }
  @keyframes slidePanelIn {
    from { opacity: 0; transform: translateY(-6px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .reserve-panel-info {
    flex: 1;
    min-width: 200px;
    font-size: 13px;
    color: #1a3a5c;
    line-height: 1.6;
  }
  .reserve-panel-info strong { font-weight: 600; }
  .reserve-panel-info .rp-label {
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
  }
  .btn-reserve {
    background: #003465;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 9px 22px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    letter-spacing: 0.03em;
    transition: background 0.15s, transform 0.1s;
    white-space: nowrap;
  }
  .btn-reserve:hover { background: #004a8f; transform: translateY(-1px); }
  .btn-reserve-cancel {
    background: transparent;
    color: var(--text-muted);
    border: 1.5px solid var(--border);
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 12px;
    cursor: pointer;
    transition: border-color 0.15s;
  }
  .btn-reserve-cancel:hover { border-color: #003465; color: #003465; }

  /* Reserve confirmation modal extras */
  .reserve-modal-details {
    background: #f0f4f9;
    border-radius: 8px;
    padding: 12px 16px;
    margin: 12px 0;
    font-size: 13px;
    line-height: 1.8;
    color: #1a3a5c;
  }
  .reserve-modal-details .rd-row { display: flex; justify-content: space-between; gap: 16px; }
  .reserve-modal-details .rd-label { color: var(--text-muted); font-size: 12px; }
  .reserve-modal-details .rd-val { font-weight: 600; font-family: 'DM Mono', monospace; font-size: 12px; }

  .col-amount { min-width: 110px; }
  .col-unit   { min-width: 70px; }

  .amount-cell {
    display: flex;
    align-items: center;
    padding: 0 8px 0 14px;
    min-height: 36px;
  }

  .dollar-sign {
    font-family: 'DM Mono', monospace;
    font-size: 12px;
    color: var(--text-muted);
    margin-right: 3px;
    flex-shrink: 0;
    user-select: none;
  }

  .amount-input {
    padding: 9px 4px !important;
    text-align: right;
    font-family: 'DM Mono', monospace;
    font-size: 13px;
    min-width: 0;
    flex: 1;
  }

  .numeric-input {
    font-family: 'DM Mono', monospace;
    text-align: right;
    padding-right: 14px !important;
  }

  .table-actions {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    background: var(--cell-bg);
  }

  .save-status {
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'DM Mono', monospace;
    margin-left: auto;
  }

  .save-status.saved { color: var(--accent); }

  /* ADMIN PAGE */
  .admin-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
  }

  .users-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    height: fit-content;
  }

  .panel-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--accent-light);
  }

  .panel-title {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    font-family: 'DM Mono', monospace;
  }

  .users-list { list-style: none; }

  .user-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background 0.1s;
  }

  .user-item:last-child { border-bottom: none; }
  .user-item:hover { background: var(--accent-light); }
  .user-item.selected { background: var(--accent-light); border-left: 3px solid var(--red); }

  .user-item-name {
    font-size: 14px;
    font-weight: 500;
    color: var(--accent);
  }

  .user-item-role {
    font-size: 11px;
    color: var(--text-muted);
    font-family: 'DM Mono', monospace;
    margin-top: 1px;
  }

  .user-item-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
  }

  .edit-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
  }

  .edit-panel-empty {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    color: var(--text-muted);
    font-size: 14px;
    flex-direction: column;
    gap: 8px;
  }

  .edit-panel-empty svg { opacity: 0.3; }

  /* MODAL */
  .modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,52,101,0.35);
    z-index: 200;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(3px);
  }

  .modal-overlay.open { display: flex; }

  .modal {
    background: var(--surface);
    border-radius: 14px;
    padding: 32px;
    width: 400px;
    box-shadow: 0 8px 40px rgba(0,52,101,0.18);
    border: 1px solid var(--border);
    border-top: 4px solid var(--accent);
  }

  .modal h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--accent);
  }

  .modal p {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 24px;
  }

  .modal-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
  }

  /* TAG */
  .tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-family: 'DM Mono', monospace;
    font-weight: 500;
  }

  .tag-admin { background: #fdeef0; color: var(--red); }
  .tag-user  { background: var(--accent-light); color: var(--accent); }

  /* TOAST */
  .toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--accent);
    color: #fff;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 13px;
    z-index: 999;
    display: none;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 20px rgba(0,52,101,0.25);
    font-family: 'DM Mono', monospace;
    border-left: 4px solid var(--red);
  }

  .toast.show { display: flex; }
  .toast.toast-success { background: #1a4a2a; border-left-color: #4caf50; }
  .toast.toast-success .toast-dot { background: #4caf50; }
  .toast-dot { width: 6px; height: 6px; background: var(--red); border-radius: 50%; }

  /* PRESENCE BADGES */
  .presence-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10px;
    font-family: 'DM Mono', monospace;
    font-weight: 500;
    padding: 2px 7px;
    border-radius: 20px;
    letter-spacing: 0.04em;
    white-space: nowrap;
  }
  .presence-online  { background: #e6f9e6; color: #1a6b1a; border: 1px solid #b6ddb6; }
  .presence-offline { background: var(--cell-bg); color: var(--text-muted); border: 1px solid var(--border); }
  .presence-dot {
    width: 6px; height: 6px; border-radius: 50%; background: #4caf50; flex-shrink: 0;
    animation: presencePulse 2s ease-in-out infinite;
  }
  @keyframes presencePulse {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0.4; }
  }

  /* Divider */
  .divider { height: 1px; background: var(--border); margin: 0; }

  /* Admin actions bar */
  .admin-top-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
  }
  .header-left {
    display: flex;
    align-items: center;
    gap: 24px;
  }

  /* BTC TICKER */
  .btc-ticker {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 6px;
    padding: 5px 14px;
    font-family: 'DM Mono', monospace;
  }

  .btc-ticker-label {
    font-size: 15px;
    font-weight: 700;
    color: var(--red);
    letter-spacing: 0.08em;
  }

  .btc-ticker-price {
    font-size: 15px;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 0.02em;
  }

  /* FOOTER */
  .site-footer {
    text-align: center;
    padding: 20px 32px;
    font-size: 12px;
    color: var(--text-muted);
    font-family: 'DM Mono', monospace;
    border-top: 1px solid var(--border);
    background: var(--surface);
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
  }

  /* EMPTY STATE */
  .empty-state {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 80px 48px;
    text-align: center;
    box-shadow: var(--shadow);
  }

  .empty-state svg {
    color: var(--text-muted);
    opacity: 0.3;
    margin-bottom: 24px;
  }

  .empty-state h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 8px;
  }

  .empty-state p {
    color: var(--text-muted);
    font-size: 14px;
    max-width: 400px;
    margin: 0 auto;
  }

  /* SPLASH SCREEN */
  #splash {
    position: fixed;
    inset: 0;
    background: #0d1b2a;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: splashFade 1s ease-out 1.5s forwards;
    pointer-events: none;
  }

  #splash-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: splashScale 0.6s ease-out forwards;
  }

  #splash-logo {
    width: 624px;
  }

  @keyframes splashFade {
    0%   { opacity: 1; }
    100% { opacity: 0; visibility: hidden; }
  }

  @keyframes splashScale {
    0%   { transform: scale(0.85); opacity: 0; }
    100% { transform: scale(1);    opacity: 1; }
  }

  /* ── MOBILE RESPONSIVE ───────────────────────────────────────────────────── */
  @media (max-width: 768px) {

    /* Header */
    header {
      padding: 0 16px;
      height: auto;
      min-height: 56px;
      flex-wrap: wrap;
      gap: 8px;
      padding-top: 10px;
      padding-bottom: 10px;
    }

    .header-left { 
      gap: 12px;
      width: 100%;
      flex-wrap: wrap;
    }

    .header-logo { height: 26px; }

    /* Navigation */
    .main-nav {
      width: 100%;
      margin-left: 0;
      gap: 4px;
      order: 3;
    }

    .nav-link {
      padding: 6px 12px;
      font-size: 12px;
      flex: 1;
      text-align: center;
    }

    .header-right {
      margin-left: auto;
    }

    .btc-ticker { padding: 4px 10px; }
    .btc-ticker-label { font-size: 12px; }
    .btc-ticker-price { font-size: 13px; }

    .user-badge { font-size: 11px; }

    /* Page wrapper */
    .page-wrapper {
      padding: 16px 12px;
      padding-bottom: 70px;
    }

    .page-header {
      flex-direction: column;
      align-items: flex-start;
      gap: 10px;
      margin-bottom: 16px;
    }

    /* Table — horizontal scroll */
    .table-container {
      border-radius: 8px;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
    }

    .data-table {
      font-size: 12px;
      min-width: 800px;
    }

    .data-table th {
      padding: 9px 10px;
      font-size: 11px;
    }

    .cell-input {
      padding: 7px 10px;
      font-size: 12px;
    }

    .amount-cell { padding: 0 6px 0 10px; }
    .amount-input { font-size: 12px; }

    .status-select { width: 100px; font-size: 11px; }
    .status-pill   { min-width: 76px; font-size: 11px; padding: 3px 10px; }

    .table-actions {
      flex-wrap: wrap;
      padding: 10px 14px;
      gap: 8px;
    }

    /* Admin layout — stack vertically */
    .admin-layout {
      grid-template-columns: 1fr;
      padding: 16px 12px;
      padding-bottom: 70px;
    }

    /* Login / main hero */
    .main-content { margin: 40px auto; padding: 0 16px; }
    .main-hero    { padding: 36px 24px; }
    .main-hero h1 { font-size: 24px; }

    /* Empty state */
    .empty-state { padding: 48px 24px; }

    /* Modal */
    .modal { width: calc(100vw - 32px); padding: 24px 20px; }

    /* Footer */
    .site-footer { font-size: 11px; padding: 14px 16px; }

    /* Splash logo */
    #splash-logo { width: 280px; }
  }

  @media (max-width: 480px) {
    .header-left  { gap: 8px; }
    .header-logo  { height: 22px; }
    .btc-ticker   { padding: 3px 8px; gap: 5px; }
    .main-hero    { padding: 28px 16px; }
    .main-hero h1 { font-size: 20px; }
    #splash-logo  { width: 200px; }
  }
/* ── VISIBILITY TOGGLES ─────────────────────────────────────────────────────*/
.vis-toggles {
  display: flex;
  gap: 5px;
  flex-wrap: wrap;
  margin-top: 5px;
}
.vis-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  font-family: 'DM Mono', monospace;
  font-weight: 500;
  padding: 2px 8px 2px 6px;
  border-radius: 20px;
  cursor: pointer;
  border: 1.5px solid;
  transition: all 0.15s;
  user-select: none;
  white-space: nowrap;
  background: none;
}
.vis-toggle.vis-on  { background: #e6f9e6; color: #1a6b1a; border-color: #b6ddb6; }
.vis-toggle.vis-off { background: #fdeef0; color: #c41e35; border-color: #f5b0bb; }
.vis-toggle:hover   { filter: brightness(0.93); }
.vis-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.vis-on  .vis-dot { background: #4caf50; }
.vis-off .vis-dot { background: #e53935; }