@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('/assets/fonts/outfit-300.woff2') format('woff2');
}

@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/outfit-400.woff2') format('woff2');
}

@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/outfit-600.woff2') format('woff2');
}

@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('/assets/fonts/outfit-800.woff2') format('woff2');
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-400.woff2') format('woff2');
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-500.woff2') format('woff2');
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-600.woff2') format('woff2');
}

@font-face {
  font-family: 'Plus Jakarta Sans';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/plus-jakarta-sans-700.woff2') format('woff2');
}

.dnsspeedtester-app {
      --bg-dark: #070913;
      --card-bg: rgba(13, 17, 30, 0.75);
      --modal-bg: #0d111e;
      --card-border: rgba(61, 166, 255, 0.12);
      --primary: #3DA6FF;
      --primary-glow: rgba(61, 166, 255, 0.35);
      --accent: #00e5ff;
      --accent-glow: rgba(0, 229, 255, 0.35);
      --success: #00e676;
      --warning: #ffb300;
      --text-main: #f0f4f8;
      --text-muted: #8fa0dd;
      --font-display: 'Outfit', sans-serif;
      --font-body: 'Plus Jakarta Sans', sans-serif;
      --bg-gradient-1: rgba(61, 166, 255, 0.12);
      --bg-gradient-2: rgba(0, 229, 255, 0.08);
      --row-bg: rgba(255, 255, 255, 0.02);
      --row-bg-hover: rgba(255, 255, 255, 0.04);
      --select-bg: #12141d;
      --watermark-dns: rgba(255, 255, 255, 0.22);
      --watermark-speed: rgba(255, 255, 255, 0.11);
    }

    [data-theme="light"] .dnsspeedtester-app,
    .dnsspeedtester-app[data-theme="light"] {
      --bg-dark: #f0f4f8;
      --card-bg: rgba(255, 255, 255, 0.85);
      --modal-bg: #ffffff;
      --card-border: rgba(61, 166, 255, 0.2);
      --primary: #0066cc;
      --primary-glow: rgba(0, 102, 204, 0.25);
      --accent: #007a9b;
      --accent-glow: rgba(0, 122, 155, 0.25);
      --success: #00c853;
      --warning: #ffab00;
      --text-main: #0f172a;
      --text-muted: #475569;
      --bg-gradient-1: rgba(0, 102, 204, 0.06);
      --bg-gradient-2: rgba(0, 122, 155, 0.04);
      --row-bg: rgba(0, 0, 0, 0.02);
      --row-bg-hover: rgba(0, 0, 0, 0.04);
      --select-bg: #ffffff;
      --watermark-dns: rgba(15, 23, 42, 0.18);
      --watermark-speed: rgba(15, 23, 42, 0.09);
    }

    .dnsspeedtester-app,
    .dnsspeedtester-app * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    /* Standalone Reset - Only applies to index.html, not when embedded */
    html,
    body {
      margin: 0;
      padding: 0;
      width: 100%;
      height: 100%;
      overflow: hidden;
      background-color: #070913;
      /* Immediate background fix to prevent flicker */
    }

    #dnsspeedtester-root {
      background-color: var(--bg-dark);
      background-image:
        radial-gradient(circle at 10% 20%, var(--bg-gradient-1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, var(--bg-gradient-2) 0%, transparent 40%);
      color: var(--text-main);
      font-family: var(--font-body);
      width: 100%;
      height: 100%;
      box-sizing: border-box;
      display: flex;
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
      padding: 1.5rem;
      transition: background-color 0.3s ease, color 0.3s ease;
      position: relative;
      container-type: inline-size;
      overflow: hidden;
    }

    .control-panel {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: calc(100% - 3rem);
      max-width: 580px;
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 1rem;
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 1rem;
      backdrop-filter: blur(25px) saturate(180%);
      -webkit-backdrop-filter: blur(25px) saturate(180%);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
      transition: top 0.5s cubic-bezier(0.4, 0, 0.2, 1), transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.3s ease;
    }

    .control-panel.hidden {
      opacity: 0;
      pointer-events: none;
      transform: translate(-50%, -30%);
    }

    .control-panel.at-bottom {
      top: calc(100% - 70px);
      transform: translate(-50%, -50%);
    }

    .control-panel.hidden.at-bottom {
      transform: translate(-50%, calc(-50% + 40px));
      opacity: 0;
    }

    .console-btn {
      background: var(--row-bg);
      border: 1px solid var(--card-border);
      border-radius: 12px;
      height: 54px;
      width: 54px;
      display: flex;
      justify-content: center;
      align-items: center;
      cursor: pointer;
      color: var(--text-main);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      flex-shrink: 0;
    }

    .console-btn:hover {
      transform: scale(1.08);
      border-color: var(--primary);
      background: rgba(61, 166, 255, 0.08);
      color: var(--primary);
      box-shadow: 0 4px 12px rgba(61, 166, 255, 0.15);
    }


    .btn-test {
      flex-grow: 1;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      border: none;
      border-radius: 99px;
      height: 54px;
      padding: 0 2.2rem;
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 1.15rem;
      cursor: pointer;
      box-shadow: 0 4px 20px var(--primary-glow);
      transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s;
    }

    .btn-test:hover:not(:disabled) {
      transform: translateY(-1px) scale(1.02);
      box-shadow: 0 6px 24px var(--primary-glow);
    }

    .btn-test:active:not(:disabled) {
      transform: translateY(1px);
    }

    .btn-test:disabled {
      opacity: 0.6;
      cursor: not-allowed;
    }

    /* Fullscreen Settings Overlay */
    .settings-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: transparent;
      z-index: 200;
      display: flex;
      justify-content: center;
      align-items: center;
      opacity: 1;
      pointer-events: auto;
      transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .settings-overlay.hidden {
      opacity: 0;
      pointer-events: none;
      transform: scale(0.95);
    }

    .settings-container {
      width: 95%;
      max-width: 620px;
      max-height: 90vh;
      overflow-y: auto;
      padding: 2rem;
      background: var(--modal-bg);
      border: 1px solid var(--card-border);
      border-radius: 28px;
      box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      text-align: left;
      scrollbar-width: none; /* Hide scrollbar in Firefox */
      position: relative;
    }

    .btn-settings-close {
      position: absolute;
      top: 1.5rem;
      right: 1.5rem;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--card-border);
      color: var(--text-muted);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      transition: all 0.2s;
      z-index: 10;
    }

    [data-theme="light"] .btn-settings-close {
      background: rgba(0, 0, 0, 0.05);
    }

    .btn-settings-close:hover {
      background: rgba(239, 68, 68, 0.1);
      color: #ef4444;
      border-color: rgba(239, 68, 68, 0.3);
    }

    .settings-container::-webkit-scrollbar {
      display: none; /* Hide scrollbar in Chrome/Safari/Edge */
    }

    .settings-container::-webkit-scrollbar-thumb {
      background-color: transparent;
    }

    .settings-header {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
      margin-bottom: 0.25rem;
    }

    .settings-container h2 {
      font-family: var(--font-display);
      font-weight: 800;
      font-size: 1.8rem;
      color: var(--text-main);
      margin: 0;
    }

    .settings-subtitle {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Settings Tabs Navigation */
    .settings-tabs {
      display: flex;
      gap: 0.5rem;
      background: var(--row-bg);
      border: 1px solid var(--card-border);
      padding: 0.25rem;
      border-radius: 12px;
      margin-bottom: 0.5rem;
    }

    .settings-tab-btn {
      flex: 1;
      background: transparent;
      border: none;
      color: var(--text-muted);
      padding: 0.6rem 1rem;
      border-radius: 10px;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.2s ease;
      text-align: center;
    }

    .settings-tab-btn:not(.active):hover {
      color: var(--text-main);
      background: rgba(255, 255, 255, 0.02);
    }
    
    [data-theme="light"] .settings-tab-btn:not(.active):hover {
      background: rgba(0, 0, 0, 0.02);
    }

    .settings-tab-btn.active {
      color: white;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      box-shadow: 0 4px 12px var(--primary-glow);
    }

    .settings-tab-content {
      display: none;
      flex-direction: column;
      gap: 1.25rem;
      animation: fadeInTab 0.25s ease-out;
    }

    .settings-tab-content.active {
      display: flex;
    }

    @keyframes fadeInTab {
      from {
        opacity: 0;
        transform: translateY(8px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    .settings-left-col,
    .settings-right-col {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
      min-width: 0;
    }

    .settings-section {
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }

    .setting-item {
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }

    .setting-item label {
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--text-main);
    }

    .setting-desc {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
    }

    .setting-input {
      background: var(--select-bg);
      color: var(--text-main);
      border: 1px solid var(--card-border);
      border-radius: 10px;
      padding: 0.6rem 0.85rem;
      font-family: var(--font-body);
      font-size: 0.95rem;
      outline: none;
      transition: border-color 0.2s;
    }

    .setting-input:focus {
      border-color: var(--accent);
    }

    /* DNS Server Editor Forms and Lists */
    .dns-manager-form {
      background: var(--row-bg);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
    }

    .dns-manager-form h3 {
      font-family: var(--font-display);
      font-size: 1.15rem;
      color: var(--text-main);
      margin: 0 0 0.25rem 0;
    }

    .dns-list-container {
      background: var(--row-bg);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 0.75rem;
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      max-height: 400px;
      overflow-y: auto;
      scrollbar-width: none;
    }

    .dns-list-container::-webkit-scrollbar {
      display: none;
    }

    .dns-list-container::-webkit-scrollbar-thumb {
      background-color: transparent;
    }

    .settings-dns-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.6rem 0.85rem;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--card-border);
      border-radius: 10px;
      gap: 1rem;
      transition: all 0.2s;
    }

    [data-theme="light"] .settings-dns-row {
      background: rgba(0, 0, 0, 0.02);
    }

    .settings-dns-row:hover {
      border-color: var(--primary);
      background: var(--row-bg-hover);
    }

    /* Test Domains List Styling */
    .domains-list-container {
      background: var(--row-bg);
      border: 1px solid var(--card-border);
      border-radius: 12px;
      padding: 0.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
      max-height: 180px;
      overflow-y: auto;
      scrollbar-width: none;
      margin-top: 0.5rem;
    }

    .domains-list-container::-webkit-scrollbar {
      display: none;
    }

    .domains-list-container::-webkit-scrollbar-thumb {
      background-color: transparent;
    }

    .settings-domain-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 0.4rem 0.6rem;
      background: rgba(255, 255, 255, 0.02);
      border: 1px solid var(--card-border);
      border-radius: 8px;
      gap: 0.5rem;
      transition: all 0.2s;
    }

    [data-theme="light"] .settings-domain-row {
      background: rgba(0, 0, 0, 0.02);
    }

    .settings-domain-row:hover {
      border-color: var(--primary);
      background: var(--row-bg-hover);
    }

    .settings-domain-row-text {
      font-size: 0.85rem;
      color: var(--text-main);
      font-family: monospace;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      flex-grow: 1;
    }

    .btn-domain-delete {
      background: transparent;
      border: none;
      cursor: pointer;
      padding: 2px;
      border-radius: 4px;
      transition: background 0.2s;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 22px;
      height: 22px;
      flex-shrink: 0;
    }

    .btn-domain-delete:hover {
      background: rgba(239, 68, 68, 0.15);
    }

    .settings-dns-row-info {
      display: flex;
      flex-direction: column;
      gap: 0.15rem;
      min-width: 0;
    }

    .settings-dns-row-info strong {
      font-size: 0.95rem;
      color: var(--text-main);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .settings-dns-row-url {
      font-size: 0.75rem;
      color: var(--text-muted);
      font-family: monospace;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .settings-dns-row-actions {
      display: flex;
      gap: 0.35rem;
      flex-shrink: 0;
    }

    .btn-dns-edit,
    .btn-dns-delete {
      background: transparent;
      border: none;
      font-size: 1rem;
      cursor: pointer;
      padding: 4px;
      border-radius: 6px;
      transition: background 0.2s;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 28px;
      height: 28px;
    }

    .btn-dns-edit:hover {
      background: var(--primary-glow);
    }

    .btn-dns-delete:hover {
      background: rgba(239, 68, 68, 0.15);
    }

    .settings-actions {
      display: flex;
      gap: 1rem;
      margin-top: 1rem;
      border-top: 1px solid var(--card-border);
      padding-top: 1.5rem;
    }

    .btn-settings-save {
      flex: 1;
      background: var(--row-bg-hover);
      color: var(--text-main);
      border: 1px solid var(--card-border);
      border-radius: 12px;
      padding: 0.85rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: all 0.2s;
    }

    .btn-settings-reset {
      flex: 1;
      background: rgba(239, 68, 68, 0.08);
      color: #ef4444;
      border: 1px solid rgba(239, 68, 68, 0.2);
      border-radius: 12px;
      padding: 0.85rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      transition: all 0.2s;
    }

    .btn-settings-reset:hover {
      background: rgba(239, 68, 68, 0.15);
      border-color: #ef4444;
    }

    .btn-settings-save:hover {
      background: var(--card-border);
      border-color: var(--primary);
    }

    .btn-settings-start {
      flex: 1.5;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      border: none;
      border-radius: 12px;
      padding: 0.85rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 1rem;
      cursor: pointer;
      box-shadow: 0 4px 15px var(--primary-glow);
      transition: all 0.2s;
    }

    .btn-settings-start:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 20px var(--primary-glow);
    }

    /* Small sub-button utility inside form */
    .btn-form-action {
      background: var(--primary);
      color: white;
      border: none;
      border-radius: 8px;
      padding: 0.5rem 1rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.85rem;
      cursor: pointer;
      transition: opacity 0.2s;
    }

    .btn-form-action.secondary {
      background: var(--row-bg-hover);
      color: var(--text-main);
      border: 1px solid var(--card-border);
    }

    .btn-form-action:hover {
      opacity: 0.9;
    }

    .results-chart {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      text-align: left;
      width: 100%;
      flex-grow: 1;
      overflow-y: auto;
      padding-right: 4px;
      scrollbar-width: none;
      /* Hide default scrollbar on Firefox */
      padding-bottom: 1.5rem;
      min-height: 280px;
    }

    /* Minimal Custom Scrollbar for results grid - visible only on hover */
    .results-chart::-webkit-scrollbar {
      width: 6px;
    }

    .results-chart::-webkit-scrollbar-track {
      background: transparent;
    }

    .results-chart::-webkit-scrollbar-thumb {
      background-color: transparent;
      border-radius: 99px;
      transition: background-color 0.3s ease;
    }

    .results-chart:hover::-webkit-scrollbar-thumb {
      background-color: var(--primary-glow);
    }

    .results-chart::-webkit-scrollbar-thumb:hover {
      background-color: var(--primary);
    }

    .chart-row {
      display: grid;
      grid-template-columns: 220px 1fr 220px;
      align-items: center;
      column-gap: 1.2rem;
      row-gap: 0;
      padding: 0.5rem 1rem;
      background: var(--row-bg);
      border: 1px solid var(--card-border);
      border-radius: 12px;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      cursor: pointer;
    }

    .chart-row:hover:not(.active):not(.expanded) {
      border-color: var(--primary);
      background: var(--row-bg-hover);
      transform: translateX(4px);
    }

    @keyframes pulse-glow {
      0%, 100% {
        box-shadow: 0 0 8px var(--primary-glow);
        background: rgba(61, 166, 255, 0.06);
      }
      50% {
        box-shadow: 0 0 18px rgba(61, 166, 255, 0.4);
        background: rgba(61, 166, 255, 0.12);
      }
    }

    .chart-row.active {
      border-color: var(--primary);
      animation: pulse-glow 1.5s infinite ease-in-out;
    }

    .chart-row.expanded {
      border-color: var(--primary);
      background: rgba(61, 166, 255, 0.04);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
      row-gap: 0.75rem;
    }

    .chart-details {
      grid-column: 1 / -1;
      max-height: 0;
      opacity: 0;
      overflow: hidden;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, padding-top 0.3s ease, margin-top 0.3s ease;
      padding-top: 0;
      margin-top: 0;
      border-top: 1px solid transparent;
      cursor: default;
    }

    .chart-row.expanded .chart-details {
      max-height: 500px;
      opacity: 1;
      margin-top: 0.5rem;
      padding-top: 0.75rem;
      border-top-color: var(--card-border);
    }

    .details-grid {
      display: grid;
      grid-template-columns: 1.2fr 1.8fr;
      gap: 1.5rem;
      align-items: stretch;
      text-align: left;
    }

    .details-meta {
      display: flex;
      flex-direction: column;
      gap: 0.85rem;
      min-width: 0;
    }

    .detail-item {
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
      min-width: 0;
    }

    .detail-label {
      font-size: 0.75rem;
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
    }

    .detail-value-wrapper {
      display: flex;
      align-items: center;
      gap: 0.5rem;
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--card-border);
      border-radius: 8px;
      padding: 0.4rem 0.6rem;
      max-width: 100%;
      min-width: 0;
    }

    [data-theme="light"] .detail-value-wrapper {
      background: rgba(0, 0, 0, 0.03);
    }

    .detail-code {
      font-family: monospace;
      font-size: 0.85rem;
      color: var(--text-main);
      overflow-x: auto;
      white-space: nowrap;
      scrollbar-width: none;
      flex-grow: 1;
      min-width: 0;
    }

    .detail-code::-webkit-scrollbar {
      display: none;
    }

    .btn-copy {
      background: transparent;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 2px;
      transition: color 0.2s;
      flex-shrink: 0;
    }

    .btn-copy:hover {
      color: var(--primary);
    }

    .detail-ips-list {
      display: flex;
      flex-direction: column;
      gap: 0.35rem;
    }

    .actions-row {
      margin-top: auto;
      padding-top: 0.5rem;
    }

    .btn-single-test {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      border: none;
      border-radius: 8px;
      padding: 0.5rem 1.25rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.85rem;
      cursor: pointer;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      box-shadow: 0 2px 10px var(--primary-glow);
      transition: transform 0.2s, box-shadow 0.2s;
    }

    .btn-single-test:hover {
      transform: translateY(-1px);
      box-shadow: 0 4px 12px var(--primary-glow);
    }

    .btn-single-test:active {
      transform: translateY(1px);
    }

    .details-chart-container {
      display: flex;
      flex-direction: column;
      gap: 0.5rem;
      height: 100%;
    }

    .svg-graph-wrapper {
      background: rgba(255, 255, 255, 0.01);
      border: 1px solid var(--card-border);
      border-radius: 10px;
      flex-grow: 1;
      min-height: 220px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: hidden;
    }

    .svg-graph-wrapper svg {
      width: 100% !important;
      height: 100%;
      display: block;
      min-width: 0;
    }

    .graph-placeholder {
      font-size: 0.85rem;
      color: var(--text-muted);
      text-align: center;
      padding: 1rem;
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 100%;
      box-sizing: border-box;
    }

    .svg-graph-wrapper circle {
      cursor: help;
      transition: cx 0.35s cubic-bezier(0.25, 1, 0.5, 1), cy 0.35s cubic-bezier(0.25, 1, 0.5, 1), transform 0.2s ease, fill 0.2s ease;
      transform-origin: center;
      transform-box: fill-box;
    }

    .svg-graph-wrapper circle:hover {
      transform: scale(1.35);
      fill: var(--accent);
    }

    .chart-row.completed {
      border-color: var(--card-border);
    }

    .chart-row.completed.fastest {
      background: rgba(16, 185, 129, 0.08);
      box-shadow: 0 0 18px rgba(16, 185, 129, 0.22);
      border-color: rgba(16, 185, 129, 0.55);
    }

    /* SVG Graph Path Animations */
    @keyframes draw-path {
      from {
        stroke-dashoffset: 1000;
      }
      to {
        stroke-dashoffset: 0;
      }
    }

    @keyframes fade-in-point {
      from {
        opacity: 0;
        transform: scale(0.5);
      }
      to {
        opacity: 1;
        transform: scale(1);
      }
    }

    @keyframes pulse-point {
      0%, 100% {
        r: 6.5px;
        stroke-width: 2.5;
        filter: drop-shadow(0 0 2px var(--accent-glow));
      }
      50% {
        r: 8.5px;
        stroke-width: 3.5;
        filter: drop-shadow(0 0 8px var(--accent));
      }
    }

    @keyframes pulse-point-mobile {
      0%, 100% {
        r: 4.5px;
        stroke-width: 1.5;
        filter: drop-shadow(0 0 1.5px var(--accent-glow));
      }
      50% {
        r: 6.0px;
        stroke-width: 2.2;
        filter: drop-shadow(0 0 5px var(--accent));
      }
    }

    .svg-graph-wrapper circle.latest-point {
      animation: pulse-point 1.8s infinite ease-in-out;
      fill: var(--accent) !important;
      stroke: var(--text-main) !important;
    }

    .svg-graph-wrapper text.latest-val {
      fill: var(--accent) !important;
      font-weight: 800 !important;
      font-size: 1.1em !important;
      filter: drop-shadow(0 0 2px var(--accent-glow));
    }

    .svg-graph-wrapper path:not(.animated-path) {
      transition: d 0.35s cubic-bezier(0.25, 1, 0.5, 1), fill 0.35s cubic-bezier(0.25, 1, 0.5, 1);
    }

    .svg-graph-wrapper text {
      transition: x 0.35s cubic-bezier(0.25, 1, 0.5, 1), y 0.35s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.35s ease;
    }

    .svg-graph-wrapper g.point-node {
      transition: opacity 0.35s ease;
    }

    .svg-graph-wrapper .animated-point {
      opacity: 0;
      animation: fade-in-point 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    }

    .svg-graph-wrapper .animated-path {
      stroke-dasharray: 1000;
      stroke-dashoffset: 1000;
      animation: draw-path 1.2s cubic-bezier(0.25, 1, 0.5, 1) forwards;
    }

    @keyframes new-point-pop {
      from {
        opacity: 0;
        transform: scale(0.3);
      }
      to {
        opacity: 1;
        transform: scale(1);
      }
    }

    .svg-graph-wrapper circle.new-point,
    .svg-graph-wrapper text.graph-value-label.new-point {
      transform-origin: center;
      transform-box: fill-box;
      animation: new-point-pop 0.35s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    }

    .chart-row.failed {
      border-color: rgba(239, 68, 68, 0.2);
      background: rgba(239, 68, 68, 0.02);
      opacity: 0.5;
    }

    .chart-info {
      display: flex;
      flex-direction: column;
      gap: 0.15rem;
      min-width: 0;
    }

    .chart-name {
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-main);
      display: flex;
      align-items: center;
      gap: 0.6rem;
      transition: color 0.3s ease;
      min-width: 0;
    }

    .chart-name span {
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .provider-icon {
      width: 20px;
      height: 20px;
      border-radius: 5px;
      object-fit: contain;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid var(--card-border);
      padding: 1.5px;
      flex-shrink: 0;
      display: inline-block;
    }

    [data-theme="light"] .provider-icon {
      background: rgba(0, 0, 0, 0.04);
    }


    .chart-ips {
      font-size: 0.7rem;
      color: var(--text-muted);
      font-family: monospace;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      transition: color 0.3s ease;
    }

    .chart-bar-container {
      width: 100%;
      height: 10px;
      background: var(--row-bg-hover);
      border-radius: 999px;
      position: relative;
      overflow: hidden;
      border: 1px solid var(--card-border);
    }

    .chart-bar {
      height: 100%;
      width: 0%;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      box-shadow: 0 0 8px var(--accent-glow);
      border-radius: 999px;
      transition: width 1.2s cubic-bezier(0.25, 1, 0.5, 1);
    }

    .chart-bar.testing {
      background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
      background-size: 200% 100%;
      animation: bar-running 3s infinite linear;
      box-shadow: 0 0 10px var(--primary-glow);
    }

    @keyframes bar-running {
      0% {
        background-position: 200% 0;
      }
      100% {
        background-position: 0 0;
      }
    }

    .chart-row.completed.fastest .chart-bar {
      background: linear-gradient(90deg, var(--success), #34d399);
      box-shadow: 0 0 8px rgba(16, 185, 129, 0.3);
    }

    .chart-stats {
      display: flex;
      justify-content: flex-end;
      align-items: center;
      gap: 0.6rem;
      font-family: var(--font-display);
    }

    .chart-latency {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-muted);
      min-width: 60px;
      text-align: right;
      transition: color 0.3s ease;
    }

    .chart-row.completed .chart-latency {
      color: var(--text-main);
    }

    .chart-row.completed.fastest .chart-latency {
      color: var(--success);
      font-weight: 800;
    }

    .chart-row.failed .chart-latency {
      color: #ef4444;
      font-size: 0.85rem;
      font-weight: 600;
    }

    .chart-saving {
      font-size: 0.75rem;
      font-weight: 600;
      color: var(--text-muted);
      background: var(--row-bg-hover);
      padding: 0.15rem 0.4rem;
      border-radius: 5px;
      min-width: 75px;
      text-align: center;
      white-space: nowrap;
      transition: all 0.3s ease;
    }

    .chart-row.completed .chart-saving {
      color: var(--accent);
      background: rgba(6, 182, 212, 0.08);
      border: 1px solid rgba(6, 182, 212, 0.1);
    }

    .chart-row.completed.fastest .chart-saving {
      color: var(--success);
      background: rgba(16, 185, 129, 0.08);
      border: 1px solid rgba(16, 185, 129, 0.1);
    }

    .form-row-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.75rem;
    }

    @container (max-width: 768px) {
      .chart-row.expanded .chart-details {
        max-height: 750px;
      }

      .svg-graph-wrapper {
        min-height: 155px;
      }

      .svg-graph-wrapper circle.latest-point {
        animation: pulse-point-mobile 1.8s infinite ease-in-out;
      }

      .svg-graph-wrapper text.latest-val {
        font-size: 8.5px !important;
        font-weight: 800 !important;
      }

      .graph-value-label {
        font-size: 7.5px !important;
      }

      .graph-q-label {
        font-size: 7px !important;
      }

      .form-row-split {
        grid-template-columns: 1fr;
      }

      #dnsspeedtester-root {
        padding: 0.75rem;
      }

      .control-panel {
        gap: 0.8rem;
        padding: 0.8rem;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: calc(100% - 1.5rem);
        max-width: 440px;
        border-radius: 12px;
      }

      .control-panel.hidden {
        transform: translate(-50%, -30%);
      }

      .console-btn {
        height: 46px;
        width: 46px;
        border-radius: 10px;
      }

      .btn-test {
        padding: 0 1rem;
        font-size: 1.05rem;
        height: 46px;
      }

      .settings-container {
        grid-template-columns: 1fr;
        max-height: 95vh;
        padding: 1.5rem;
        border-radius: 20px;
        gap: 1.25rem;
        width: calc(100% - 1.5rem);
      }

      .settings-container h2 {
        font-size: 1.4rem;
      }

      .settings-actions {
        flex-direction: column;
        gap: 0.5rem;
      }

      .results-chart {
        padding-bottom: 20px;
      }

      .chart-row {
        grid-template-columns: 1fr auto;
        gap: 0.6rem;
        padding: 0.8rem 1rem;
        align-items: center;
      }

      .chart-info {
        grid-column: 1;
        grid-row: 1;
      }

      .chart-stats {
        grid-column: 2;
        grid-row: 1;
        justify-content: flex-end;
        gap: 0.4rem;
      }

      .chart-bar-container {
        grid-column: 1 / span 2;
        grid-row: 2;
        margin-top: 0.2rem;
      }

      .chart-ips {
        display: none;
      }

      .chart-saving {
        min-width: unset;
        font-size: 0.75rem;
        padding: 0.15rem 0.35rem;
        white-space: nowrap;
      }

      .chart-latency {
        font-size: 0.95rem;
        min-width: 45px;
        white-space: nowrap;
      }

      .details-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
      }

      .actions-row {
        margin-top: 0.5rem;
      }
    }

    @container (max-width: 380px) {
      .chart-row {
        gap: 0.4rem;
        padding: 0.6rem 0.6rem;
      }

      .chart-name {
        font-size: 0.9rem;
        gap: 0.4rem;
      }

      .provider-icon {
        width: 20px;
        height: 20px;
        border-radius: 4px;
      }

      .chart-latency {
        font-size: 0.85rem;
        min-width: 38px;
      }

      .chart-saving {
        font-size: 0.7rem;
        padding: 0.1rem 0.25rem;
      }

      .chart-stats {
        gap: 0.25rem;
      }
    }

    .select-concurrency {
      background: var(--select-bg);
      color: var(--text-main);
      border: 1px solid var(--card-border);
      border-radius: 8px;
      padding: 0.25rem 0.5rem;
      cursor: pointer;
      font-family: var(--font-display);
      font-weight: 600;
      outline: none;
      transition: all 0.2s ease;
    }

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



    .theme-icon {
      width: 20px;
      height: 20px;
      fill: none;
      stroke: currentColor;
      stroke-width: 2;
      stroke-linecap: round;
      stroke-linejoin: round;
      transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    }

    [data-theme="light"] .theme-icon {
      transform: rotate(180deg);
    }

    .sun-icon {
      display: block;
    }

    .moon-icon {
      display: none;
    }

    [data-theme="light"] .sun-icon {
      display: none;
    }

    [data-theme="light"] .moon-icon {
      display: block;
    }

    /* Custom Modal Dialog Styles */
    .custom-dialog-overlay {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.4);
      z-index: 999;
      display: flex;
      justify-content: center;
      align-items: center;
      opacity: 0;
      pointer-events: none;
      transition: opacity 0.3s ease;
    }

    .custom-dialog-overlay.active {
      opacity: 1;
      pointer-events: auto;
    }

    .custom-dialog-box {
      background: var(--modal-bg);
      border: 1px solid var(--card-border);
      border-radius: 20px;
      padding: 1.75rem;
      width: 90%;
      max-width: 400px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
      transform: scale(0.9);
      transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    .custom-dialog-overlay.active .custom-dialog-box {
      transform: scale(1);
    }

    .custom-dialog-box h3 {
      font-family: var(--font-display);
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--text-main);
      margin: 0 0 0.5rem 0;
    }

    .custom-dialog-box p {
      font-size: 0.95rem;
      color: var(--text-muted);
      margin: 0 0 1.5rem 0;
      line-height: 1.5;
    }

    .custom-dialog-actions {
      display: flex;
      justify-content: flex-end;
      gap: 0.75rem;
    }

    .btn-dialog-primary,
    .btn-dialog-secondary {
      padding: 0.55rem 1.25rem;
      font-family: var(--font-display);
      font-weight: 600;
      font-size: 0.9rem;
      border-radius: 10px;
      cursor: pointer;
      transition: all 0.2s;
    }

    .btn-dialog-primary {
      background: linear-gradient(135deg, var(--primary), var(--accent));
      color: white;
      border: none;
      box-shadow: 0 4px 12px var(--primary-glow);
    }

    .btn-dialog-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 6px 16px var(--primary-glow);
    }

    .btn-dialog-secondary {
      background: var(--row-bg-hover);
      color: var(--text-main);
      border: 1px solid var(--card-border);
    }

    .btn-dialog-secondary:hover {
      background: var(--card-border);
    }

    /* App Header & Live Dashboard Styles */
    .app-header {
      background: var(--card-bg);
      border: 1px solid var(--card-border);
      border-radius: 16px;
      padding: 0.5rem 0.8rem;
      backdrop-filter: blur(25px) saturate(180%);
      -webkit-backdrop-filter: blur(25px) saturate(180%);
      margin-bottom: 1rem;
      display: flex;
      flex-direction: column;
      gap: 0.15rem;
      flex-shrink: 0;
      box-shadow: none;
      
      /* Smooth entry/exit height/opacity transitions */
      max-height: 0;
      opacity: 0;
      transform: translateY(-15px) scale(0.98);
      pointer-events: none;
      overflow: hidden;
      margin-bottom: 0;
      border-width: 0;
      padding: 0 0.8rem;
      transition: max-height 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                  opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                  transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                  margin-bottom 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                  padding 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                  border-width 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .app-header.active {
      max-height: 180px;
      opacity: 1;
      transform: translateY(0) scale(1);
      pointer-events: auto;
      margin-bottom: 1rem;
      border-width: 1px;
      padding: 0.5rem 0.8rem;
    }

    .header-progress-bar-container {
      width: 100%;
      display: flex;
      flex-direction: column;
      gap: 0.25rem;
    }

    .header-progress-bar-bg {
      width: 100%;
      height: 8px;
      background: rgba(255, 255, 255, 0.05);
      border-radius: 99px;
      border: 1px solid var(--card-border);
      position: relative;
    }

    [data-theme="light"] .header-progress-bar-bg {
      background: rgba(0, 0, 0, 0.05);
    }

    .header-progress-bar-fill {
      height: 100%;
      width: 0%;
      background: linear-gradient(90deg, var(--accent), var(--primary), var(--accent));
      background-size: 200% 100%;
      animation: progress-glow-flow 4s infinite linear;
      box-shadow: 0 0 10px var(--primary-glow), 0 0 4px var(--accent-glow);
      border-radius: 99px;
      transition: width 0.4s cubic-bezier(0.25, 1, 0.5, 1);
      position: relative;
    }

    @keyframes progress-glow-flow {
      0% { background-position: 0% 50%; }
      100% { background-position: 200% 50%; }
    }

    .header-progress-bar-fill::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0) 100%
      );
      background-size: 200% 100%;
      animation: progress-sheen 2.5s infinite linear;
      border-radius: 99px;
    }

    @keyframes progress-sheen {
      0% { background-position: 200% 0; }
      100% { background-position: -200% 0; }
    }

    .live-dashboard-container {
      width: 100%;
      display: flex;
      flex-direction: column;
      gap: 0;
    }

    .live-graph-wrapper {
      background: transparent;
      border: none;
      border-radius: 0;
      height: 85px;
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
      overflow: visible;
      margin: -0.5rem -0.8rem 0 -0.8rem;
      transition: border-color 0.3s ease;
    }

    [data-theme="light"] .live-graph-wrapper {
      background: rgba(0, 0, 0, 0.01);
    }

    .live-graph-wrapper svg {
      width: 100%;
      height: 100%;
      display: block;
    }

    @media (prefers-reduced-motion: reduce) {
      .svg-graph-wrapper circle.latest-point,
      .chart-row.active,
      .header-progress-bar-fill,
      .header-progress-bar-fill::after,
      .chart-bar.testing {
        animation: none !important;
      }

      .chart-row,
      .app-header,
      .control-panel,
      .settings-overlay,
      .custom-dialog-box {
        transition-duration: 0.001ms !important;
      }
    }

    /* Small Screen adaptations */
    @container (max-width: 550px) {
      .app-header {
        padding: 0.6rem 0.8rem;
        gap: 0.25rem;
      }
      .app-header.active {
        max-height: 160px;
      }
      .live-graph-wrapper {
        height: 55px;
        margin: -0.6rem -0.8rem 0 -0.8rem;
      }
    }