:root {
  --cinza-bg: #f5f5f5;
  --branco: #fff;
  --verde-whatsapp: #25D366;
  --verde-whatsapp-dark: #128C7E;
  --azul-phone: #1976d2;
  --verde-phone: #43a047;
  --instagram-grad: linear-gradient(90deg, #fd5d47 0%, #fcb045 40%, #fd1d1d 60%, #833ab4 100%);
  --instagram-grad-hover: linear-gradient(90deg, #833ab4 0%, #fd1d1d 40%, #fcb045 60%, #fd5d47 100%);
  --cinza-texto: #444;
  --shadow: 0 4px 18px rgba(44, 83, 100, 0.10);
  --shadow-hover: 0 8px 24px rgba(44, 83, 100, 0.13);
}

html {
  box-sizing: border-box;
  font-size: 16px;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--cinza-bg);
  font-family: 'Montserrat', Arial, sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  background-image: url('img/img/logo-geosul-icone-cinza.png');
  background-size: 1800px;
  background-repeat: no-repeat;
  background-position: center;
}

main {
  background: var(--branco);
  border-radius: 22px;
  box-shadow: 0 8px 32px rgba(27, 94, 32, 0.10);
  padding: 44px 32px 36px 32px;
  max-width: 420px;
  width: 100%;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.logo-img {
  width: 350px;
  max-width: 80vw;
  height: auto;
  margin-bottom: 32px;
  filter: drop-shadow(0 6px 24px rgba(25, 118, 210, 0.13));
}

.desc {
  font-size: 1.18rem;
  color: var(--cinza-texto);
  margin-bottom: 32px;
  line-height: 1.5;
  font-weight: 500;
}

.contact-buttons {
  display: flex;
  flex-direction: column;
  gap: 22px;
  width: 100%;
  align-items: center;
}

.contact-btn {
  display: block;
  width: 100%;
  max-width: 340px;
  padding: 18px 0;
  border-radius: 40px;
  font-size: 1.18rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow);
  border: none;
  outline: none;
  transition: background 0.18s, color 0.18s, transform 0.18s, box-shadow 0.18s;
  margin: 0 auto;
  cursor: pointer;
  text-align: center;
  position: relative;
  background: var(--branco);
  color: var(--cinza-texto);
}

.contact-btn.whatsapp {
  background: linear-gradient(90deg, var(--verde-whatsapp) 0%, var(--verde-whatsapp-dark) 100%);
  color: var(--branco);
}

.contact-btn.whatsapp:hover,
.contact-btn.whatsapp:focus {
  background: linear-gradient(90deg, var(--verde-whatsapp-dark) 0%, var(--verde-whatsapp) 100%);
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--shadow-hover);
  color: var(--branco);
}

.contact-btn.phone {
  background: linear-gradient(90deg, var(--azul-phone) 0%, var(--verde-phone) 100%);
  color: var(--branco);
}

.contact-btn.phone:hover,
.contact-btn.phone:focus {
  background: linear-gradient(90deg, var(--verde-phone) 0%, var(--azul-phone) 100%);
  transform: translateY(-2px) scale(1.03);
  box-shadow: var(--shadow-hover);
  color: var(--branco);
}

.contact-btn.instagram {
  background: var(--instagram-grad);
  color: var(--branco);
  border: none;
}

.contact-btn.instagram:hover,
.contact-btn.instagram:focus {
  background: var(--instagram-grad-hover);
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px rgba(253, 93, 71, 0.13);
  color: var(--branco);
}

@media (max-width: 500px) {
  main {
    padding: 24px 8vw 24px 8vw;
    max-width: 98vw;
  }

  .logo-img {
    width: 90vw;
    max-width: 98vw;
  }

  .contact-btn {
    font-size: 1rem;
    padding: 14px 0;
  }
}