/* Base entrance animations */
  @keyframes fadeUpAnim {
    0% { opacity: 0; transform: translateY(40px); }
    100% { opacity: 1; transform: translateY(0); }
  }
  @keyframes scaleInAnim {
    0% { opacity: 0; transform: scale(0.95); }
    100% { opacity: 1; transform: scale(1); }
  }
  @keyframes chatPop {
    0% { opacity: 0; transform: scale(0.8) translateY(20px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
  }

  .anim-fade-up {
    animation: fadeUpAnim 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
  }
  .anim-delay-1 { animation-delay: 0.15s; }
  .anim-delay-2 { animation-delay: 0.30s; }
  .anim-delay-3 { animation-delay: 0.45s; }
  .anim-delay-4 { animation-delay: 0.8s; }

  /* Hero Section */
  .wa-hero {
    position: relative;
    padding: var(--sp-24) 0 var(--sp-20);
    background: linear-gradient(135deg, #075E54 0%, #128C7E 100%);
    color: var(--clr-white);
    overflow: hidden;
    min-height: 85vh;
    display: flex;
    align-items: center;
  }

  .wa-hero__pattern {
    position: absolute;
    inset: 0;
    opacity: 0.05;
    background-image: radial-gradient(#fff 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: 0;
  }

  .wa-hero__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-12);
    align-items: center;
    position: relative;
    z-index: 2;
  }

  .wa-hero__badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 6px 16px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: var(--sp-6);
  }

  .wa-hero__badge svg {
    margin-right: 8px;
    width: 18px;
    height: 18px;
  }

  .wa-hero__title {
    font-family: var(--ff-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--sp-6);
  }

  .wa-hero__desc {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: var(--sp-10);
    max-width: 500px;
  }

  .btn-whatsapp {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    font-size: 1.15rem;
    font-weight: 600;
    border-radius: 100px;
    background: #25D366;
    color: #fff;
    text-decoration: none;
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .btn-whatsapp:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(37, 211, 102, 0.6);
  }

  /* CSS Phone Mockup */
  .phone-mockup {
    position: relative;
    width: 320px;
    height: 650px;
    background: #e5ddd5;
    border-radius: 40px;
    border: 12px solid #111;
    margin: 0 auto;
    box-shadow: 0 25px 50px rgba(0,0,0,0.3);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: rotate(2deg);
  }

  .phone-notch {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 140px;
    height: 25px;
    background: #111;
    border-bottom-left-radius: 16px;
    border-bottom-right-radius: 16px;
    z-index: 10;
  }

  .chat-header {
    background: #075E54;
    padding: 35px 16px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
  }

  .chat-avatar {
    width: 40px;
    height: 40px;
    background: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .chat-avatar img {
    width: 24px;
    height: 24px;
    object-fit: contain;
  }

  .chat-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 2px;
  }

  .chat-info p {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.8);
  }

  .chat-body {
    flex: 1;
    padding: 16px;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0IiBoZWlnaHQ9IjQiPgo8cmVjdCB3aWR0aD0iNCIgaGVpZ2h0PSI0IiBmaWxsPSIjZTVkZGQ1Ij48L3JlY3Q+CjxyZWN0IHdpZHRoPSIxIiBoZWlnaHQ9IjEiIGZpbGw9IiNkOGQwYzkiPjwvcmVjdD4KPC9zdmc+');
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .chat-bubble {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.4;
    position: relative;
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
    opacity: 0;
    animation: chatPop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  }

  .chat-bubble.sent {
    align-self: flex-end;
    background: #dcf8c6;
    border-top-right-radius: 0;
    color: #111;
  }

  .chat-bubble.received {
    align-self: flex-start;
    background: #fff;
    border-top-left-radius: 0;
    color: #111;
  }

  .chat-bubble.sent::after {
    content: '';
    position: absolute;
    top: 0;
    right: -8px;
    width: 0;
    height: 0;
    border-top: 10px solid #dcf8c6;
    border-right: 10px solid transparent;
  }

  .chat-bubble.received::after {
    content: '';
    position: absolute;
    top: 0;
    left: -8px;
    width: 0;
    height: 0;
    border-top: 10px solid #fff;
    border-left: 10px solid transparent;
  }

  .chat-time {
    display: block;
    font-size: 0.65rem;
    color: rgba(0,0,0,0.45);
    text-align: right;
    margin-top: 4px;
  }

  .chat-footer {
    background: #f0f0f0;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
  }

  .chat-input {
    flex: 1;
    background: #fff;
    height: 40px;
    border-radius: 20px;
    padding: 0 16px;
    display: flex;
    align-items: center;
    color: #999;
    font-size: 0.9rem;
  }

  .chat-mic {
    width: 40px;
    height: 40px;
    background: #00897B;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
  }

  /* How it works */
  .steps-section {
    padding: var(--sp-24) 0;
    background: var(--clr-white);
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--sp-8);
    margin-top: var(--sp-16);
  }

  .step-card {
    text-align: center;
    padding: var(--sp-8);
    opacity: 0;
    animation: fadeUpAnim 0.8s forwards;
  }

  .step-icon {
    width: 80px;
    height: 80px;
    background: var(--clr-green-50);
    color: var(--clr-green-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--sp-6);
    box-shadow: 0 10px 25px rgba(63, 174, 42, 0.15);
  }

  .step-card h3 {
    font-family: var(--ff-heading);
    font-size: 1.3rem;
    color: var(--clr-blue-900);
    margin-bottom: var(--sp-3);
  }

  .step-card p {
    color: var(--clr-gray-600);
    line-height: 1.6;
  }

  /* Features */
  .features-section {
    padding: var(--sp-24) 0;
    background: var(--clr-gray-50);
  }

  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--sp-6);
    margin-top: var(--sp-12);
  }

  .wa-feature {
    background: var(--clr-white);
    padding: var(--sp-8);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: var(--sp-6);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid #25D366;
    transition: transform 0.3s ease;
  }

  .wa-feature:hover {
    transform: translateX(10px);
  }

  .wa-feature__icon {
    width: 48px;
    height: 48px;
    background: #e8f9ed;
    color: #075E54;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }

  .wa-feature h4 {
    font-size: 1.15rem;
    color: var(--clr-blue-900);
    margin-bottom: 4px;
  }

  .wa-feature p {
    font-size: 0.95rem;
    color: var(--clr-gray-600);
  }

  @media (max-width: 992px) {
    .wa-hero__grid {
      grid-template-columns: 1fr;
      text-align: center;
      gap: var(--sp-16);
    }
    .wa-hero__badge, .wa-hero__desc {
      margin-left: auto;
      margin-right: auto;
    }
    .phone-mockup {
      transform: none;
    }
  }