:root {
    --primary: #212529;
    --primary-hover: #000000;
    --primary-light: #f1f3f5;
    --dark: #111827;
    --dark-muted: #4b5563;
    --bg-light: #f8fafc;
    --card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.03), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    --border-color: #e2e8f0;
  }

  body {
    color: var(--dark);
    background-color: #ffffff;
    line-height: 1.6;
  }

  h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
  }

  /* Utility classes */
  .text-primary-clip {
    color: var(--primary) !important;
  }
  .bg-light-clip {
    background-color: var(--bg-light) !important;
  }

  /* Button styles */
  .btn-primary-clip {
    background-color: var(--primary);
    color: #ffffff !important;
    border: 1px solid var(--primary);
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 6px;
    transition: all 0.2s ease;
  }
  .btn-primary-clip:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(33, 37, 41, 0.15);
  }

  .btn-secondary-clip {
    background-color: #ffffff;
    color: var(--dark-muted) !important;
    border: 1px solid var(--border-color);
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 6px;
    transition: all 0.2s ease;
  }
  .btn-secondary-clip:hover {
    background-color: var(--bg-light);
    color: var(--dark) !important;
    border-color: var(--dark-muted);
  }

  /* Collapsed navbar (phone/tablet): center the links and stack the auth
     actions full-width under a subtle divider; desktop layout unchanged. */
  @media (max-width: 991.98px) {
    #navbarNav .navbar-nav { text-align: center; }
    #navbarNav .nav-auth {
      flex-direction: column;
      align-items: stretch;
      text-align: center;
      gap: 10px;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding-top: 14px;
      margin-top: 10px;
      padding-bottom: 6px;
    }
  }

  /* Hero Section */
  .hero-section {
    padding: 80px 0;
    background: radial-gradient(circle at 90% 10%, rgba(248, 249, 250, 0.7) 0%, rgba(255, 255, 255, 0) 60%);
  }

  .hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--dark);
    margin-bottom: 20px;
  }

  @media (max-width: 991px) {
    .hero-section {
      padding: 40px 0;
    }
    .hero-title {
      font-size: 2.25rem;
      text-align: center;
    }
    .hero-desc {
      text-align: center;
    }
    .hero-btns {
      justify-content: center;
    }
  }

  /* Sign-up Sheet Mockup Widget (participant view) */
  .sheet-mockup {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    font-size: 0.85rem;
    max-width: 440px;
    margin: 0 auto;
    text-align: left;
  }

  .sheet-header {
    background: #1e293b;
    color: #f8fafc;
    padding: 14px 18px;
    border-bottom: 1px solid #334155;
  }

  .sheet-body {
    padding: 16px 18px;
    background: #ffffff;
  }

  .sheet-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 12px;
    margin-bottom: 10px;
    background: #ffffff;
  }

  .sheet-row.full {
    background: var(--bg-light);
    opacity: 0.75;
  }

  .slot-meter {
    display: flex;
    gap: 3px;
    margin-top: 4px;
  }

  .slot-dot {
    width: 14px;
    height: 6px;
    border-radius: 3px;
    background: var(--border-color);
  }

  .slot-dot.filled {
    background: var(--primary);
  }

  .sheet-btn {
    font-size: 0.72rem;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 6px;
    white-space: nowrap;
  }

  .sheet-btn.open {
    background: var(--primary);
    color: #ffffff;
  }

  .sheet-btn.closed {
    background: transparent;
    color: #94a3b8;
    border: 1px solid var(--border-color);
    text-decoration: line-through;
  }

  /* Process Flow Steps */
  .step-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    box-shadow: var(--card-shadow);
    height: 100%;
  }

  .step-icon-wrapper {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background-color: var(--primary-light);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    margin-bottom: 12px;
  }

  .step-flow-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: #94a3b8;
    font-size: 1.5rem;
  }

  @media (max-width: 768px) {
    .step-flow-arrow {
      transform: rotate(90deg);
      margin: 10px 0;
    }
  }

  /* Limit example cards */
  .limit-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 18px;
    box-shadow: var(--card-shadow);
    height: 100%;
    text-align: left;
  }

  .limit-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 10px;
    border-radius: 20px;
    margin-bottom: 10px;
  }

  .limit-tag.open {
    background: var(--primary-light);
    color: var(--primary);
  }

  .limit-tag.full {
    background: var(--dark);
    color: #ffffff;
  }

  /* Everyday-examples Grid */
  .built-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    height: 100%;
  }

  .built-icon {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
  }

  /* Value Prop Cards on Right */
  .value-prop-card {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 20px;
    background: #ffffff;
    box-shadow: var(--card-shadow);
    text-align: left;
  }

  /* Pricing Cards */
  .pricing-card {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    background: #ffffff;
    box-shadow: var(--card-shadow);
  }
  .pricing-card.premium {
    border-color: var(--primary);
    position: relative;
  }
  .pricing-card.premium::before {
    content: "Best for most organizers";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #ffffff;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 20px;
    text-transform: uppercase;
  }