.gp-container {
    max-width: 680px;
    margin: 0 auto;
    padding: 32px 24px 80px;
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    color: #1a2d47;
    font-weight: 450;
    -webkit-font-smoothing: antialiased;
    box-sizing: border-box;
  }
  .gp-container *, .gp-container *::before, .gp-container *::after {
    box-sizing: border-box;
  }
  .gp-container {
    --navy: #1a2d47;
    --navy-light: #253551;
    --slate: #64748b;
    --slate-light: #94a3b8;
    --ice: #e8eef6;
    --ice-light: #f1f5f9;
    --white: #ffffff;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
    --blue-bg: rgba(74, 158, 255, 0.10);
    --blue-fg: #4a9eff;
    --purple-bg: rgba(124, 77, 255, 0.10);
    --purple-fg: #a78bfa;
    --teal-bg: rgba(20, 184, 166, 0.10);
    --teal-fg: #14b8a6;
    --amber-bg: rgba(245, 158, 11, 0.10);
    --amber-fg: #f59e0b;
    --green-bg: rgba(16, 185, 129, 0.10);
    --green-fg: #10b981;
  }

  /* ── Mode toggle ── */
  .gp-mode-toggle {
    display: flex;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
    border: 1.5px solid var(--ice);
  }
  .gp-mode-option {
    flex: 1;
    padding: 14px 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    background: transparent;
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--slate);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
  }
  .gp-mode-option.active { background: var(--navy); color: var(--white); }
  .gp-mode-option:not(.active):hover { background: var(--ice-light); }
  .gp-mode-option i { font-size: 1.15rem; }

  /* ── Icon squares ── */
  .gp-icon-sq {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 20px;
  }
  .gp-icon-sq--blue   { background: var(--blue-bg);   color: var(--blue-fg); }
  .gp-icon-sq--purple { background: var(--purple-bg); color: var(--purple-fg); }
  .gp-icon-sq--teal   { background: var(--teal-bg);   color: var(--teal-fg); }
  .gp-icon-sq--amber  { background: var(--amber-bg);  color: var(--amber-fg); }
  .gp-icon-sq--green  { background: var(--green-bg);  color: var(--green-fg); }

  .gp-icon-inline {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
  }

  /* ── Panels ── */
  .gp-panel { display: none; }
  .gp-panel.active { display: block; }

  /* ── Solo card ── */
  .gp-solo-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px 32px;
    box-shadow: var(--shadow-sm);
    border: 1.5px solid var(--ice);
    text-align: center;
  }
  .gp-solo-card h3 { font-size: 1.4rem; margin: 14px 0 8px; font-weight: 600; }
  .gp-solo-card p { color: var(--slate); font-size: 1.05rem; line-height: 1.55; margin-bottom: 20px; }
  .gp-solo-btn {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--navy); color: var(--white) !important;
    border: none; padding: 14px 32px; border-radius: var(--radius-sm);
    font-family: inherit; font-size: 1.1rem; font-weight: 600;
    cursor: pointer; transition: all 0.2s; text-decoration: none !important;
  }
  .gp-solo-btn:hover { background: var(--navy-light); box-shadow: var(--shadow-md); }
  .gp-solo-unavailable { color: var(--slate-light); font-size: 1rem; font-style: italic; }

  /* ── Info banner ── */
  .gp-info-banner {
    background: var(--blue-bg);
    border: 1.5px solid rgba(74, 158, 255, 0.15);
    border-radius: var(--radius);
    padding: 16px 18px;
    margin-bottom: 24px;
    display: flex;
    gap: 12px;
    align-items: flex-start;
  }
  .gp-info-banner i { color: var(--blue-fg); font-size: 1.15rem; margin-top: 2px; flex-shrink: 0; }
  .gp-info-banner p { font-size: 1rem; line-height: 1.55; color: var(--navy); }

  /* ── Stepper ── */
  .gp-stepper {
    display: flex;
    align-items: center;
    margin-bottom: 28px;
    padding: 0 8px;
  }
  .gp-step-indicator { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
  .gp-step-dot {
    width: 32px; height: 32px; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 0.9rem; font-weight: 700;
    transition: all 0.35s ease;
    background: var(--ice); color: var(--slate-light); border: 2px solid var(--ice);
  }
  .gp-step-dot.active { background: var(--navy); color: var(--white); border-color: var(--navy); box-shadow: 0 0 0 4px rgba(26,45,71,0.12); }
  .gp-step-dot.done { background: var(--green-fg); color: var(--white); border-color: var(--green-fg); }
  .gp-step-label { font-size: 1rem; font-weight: 500; color: var(--slate-light); transition: color 0.3s; }
  .gp-step-label.active { color: var(--navy); font-weight: 600; }
  .gp-step-label.done { color: var(--green-fg); }
  .gp-step-line { flex: 1; height: 2px; background: var(--ice); margin: 0 6px; transition: background 0.4s ease; }
  .gp-step-line.done { background: var(--green-fg); }

  /* ── Card ── */
  .gp-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    border: 1.5px solid var(--ice);
    margin-bottom: 16px;
    animation: gpFadeUp 0.35s ease both;
  }
  @keyframes gpFadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
  }
  .gp-card h2 { font-size: 1.35rem; font-weight: 600; margin-bottom: 6px; }
  .gp-card .gp-subtitle { color: var(--slate); font-size: 1rem; margin-bottom: 18px; line-height: 1.5; }

  /* ── Role grid ── */
  .gp-role-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 12px;
  }
  .gp-role-card {
    background: var(--ice-light);
    border: 2px solid var(--ice);
    border-radius: var(--radius-sm);
    padding: 24px 14px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
  }
  .gp-role-card:hover { border-color: var(--navy); background: var(--white); box-shadow: var(--shadow-sm); }
  .gp-role-card.selected { border-color: var(--navy); background: var(--navy); color: var(--white); box-shadow: var(--shadow-md); }
  .gp-role-card .gp-role-icon-wrap { margin: 0 auto 10px; }
  .gp-role-card .gp-icon-sq { width: 52px; height: 52px; font-size: 24px; }
  .gp-role-card.selected .gp-icon-sq { background: rgba(255,255,255,0.15); color: var(--white); }
  .gp-role-card .gp-role-name { font-weight: 600; font-size: 1.1rem; }
  .gp-role-card .gp-role-desc { font-size: 1rem; color: var(--slate); margin-top: 4px; line-height: 1.4; }
  .gp-role-card.selected .gp-role-desc { color: rgba(255,255,255,0.7); }
  .gp-role-card .gp-checkmark { display: none; position: absolute; top: 8px; right: 10px; font-size: 0.8rem; color: var(--white); }
  .gp-role-card.selected .gp-checkmark { display: block; }

  .gp-paywall-note { font-size: 1rem; color: var(--amber-fg); margin-top: 12px; display: flex; align-items: center; gap: 6px; }

  /* ── Buttons ── */
  .gp-btn-primary {
    width: 100%; padding: 14px; border: none; border-radius: var(--radius-sm);
    font-family: inherit; font-size: 1.1rem; font-weight: 600; cursor: pointer;
    transition: all 0.25s ease; display: flex; align-items: center; justify-content: center; gap: 8px;
  }
  .gp-btn-primary.ready { background: var(--navy); color: var(--white); box-shadow: var(--shadow-sm); }
  .gp-btn-primary.ready:hover { background: var(--navy-light); box-shadow: var(--shadow-md); transform: translateY(-1px); }
  .gp-btn-primary.waiting { background: var(--ice); color: var(--slate-light); cursor: not-allowed; }

  /* ── Session result ── */
  .gp-session-result { text-align: center; }
  .gp-pin-display { background: var(--ice-light); border: 2px dashed var(--slate-light); border-radius: var(--radius); padding: 20px; margin: 16px 0; }
  .gp-pin-label { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--slate); font-weight: 600; margin-bottom: 6px; }
  .gp-pin-code { font-size: 2.8rem; font-weight: 700; letter-spacing: 0.15em; color: var(--navy); }

  .gp-share-methods { display: flex; gap: 10px; margin: 16px 0; }
  .gp-share-btn {
    flex: 1; padding: 12px; border: 1.5px solid var(--ice); border-radius: var(--radius-sm);
    background: var(--white); font-family: inherit; font-size: 1rem; font-weight: 500;
    color: var(--navy); cursor: pointer; transition: all 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 8px;
  }
  .gp-share-btn:hover { background: var(--ice-light); border-color: var(--slate-light); }
  .gp-share-btn i { font-size: 1rem; color: var(--slate); }

  .gp-qr-wrapper { background: var(--white); border: 1.5px solid var(--ice); border-radius: var(--radius); padding: 20px; display: inline-block; margin: 12px 0; box-shadow: var(--shadow-sm); }
  #gpQrcode img { display: none !important; }
  #gpQrcode canvas { display: block !important; margin: 0 auto; }

  .gp-join-url { font-size: 1rem; color: var(--slate); margin: 12px 0 20px; word-break: break-all; }
  .gp-join-url a { color: var(--blue-fg); text-decoration: none; font-weight: 500; }
  .gp-join-url a:hover { text-decoration: underline; }

  .gp-divider { height: 1px; background: var(--ice); margin: 20px 0; }

  .gp-step-panel { display: none; }
  .gp-step-panel.active { display: block; }

  /* ── Mobile: ≤ 600px ── */
  @media (max-width: 600px) {
    .gp-container { padding: 20px 16px 60px; }
    .gp-card { padding: 22px 18px; }
    .gp-role-grid {
      grid-template-columns: 1fr;
      gap: 10px;
    }
    .gp-role-card {
      display: flex;
      align-items: center;
      gap: 14px;
      text-align: left;
      padding: 16px;
      flex-wrap: nowrap;
    }
    .gp-role-card .gp-role-icon-wrap { margin: 0; flex-shrink: 0; }
    .gp-role-card .gp-role-name { flex: 1; }
    .gp-role-card .gp-role-desc { text-align: right; flex-shrink: 0; }
    .gp-role-card .gp-icon-sq { width: 48px; height: 48px; font-size: 22px; }
    .gp-role-card .gp-checkmark { top: 50%; right: 14px; transform: translateY(-50%); }
    .gp-step-label { display: none; }
    .gp-share-methods { flex-direction: column; }
    .gp-mode-option { font-size: 1rem; padding: 12px 8px; gap: 8px; }
    .gp-solo-card { padding: 24px 18px; }
  }