/* === GLOBAL RESET & BASE === */
html {
  box-sizing: border-box;
  font-size: 100%;
  scroll-behavior: smooth;
}

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

body {
  margin: 0;
  padding: 0;
  font-family: 'Poppins', sans-serif;
  background-color: #fefefe;
  color: #222;
  line-height: 1.6;
}

img, video {
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #00bcd4;
}

/* === ANIMATIONS === */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.active {
  opacity: 1;
  transform: translateY(0);
}

/* === HEADER === */
header._header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #ffffff;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease;
}

header._header .brand img {
  height: 50px;
}

header._header nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

header._header nav ul li a {
  font-weight: 600;
  font-size: 1rem;
  color: #222;
  position: relative;
}

header._header nav ul li a::after {
  content: '';
  display: block;
  width: 0;
  height: 2px;
  background: #00bcd4;
  transition: width 0.3s;
  position: absolute;
  bottom: -5px;
  left: 0;
}

header._header nav ul li a:hover::after {
  width: 100%;
}

/* === HERO === */
section._hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #00bcd4 0%, #ff6f61 100%);
  color: #fff;
  text-align: center;
  padding: 4rem 2rem;
}

section._hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease forwards;
}

section._hero p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto;
  animation: fadeInUp 1.5s ease forwards;
}

/* === BUTTONS === */
.btn-primary {
  background-color: #00bcd4;
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  border: none;
  font-weight: 600;
  transition: background-color 0.3s ease;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: #0197a5;
}

/* === SECTION BLOCKS === */
section._block {
  padding: 4rem 2rem;
}

section._block:nth-child(even) {
  background-color: #f1f8f9;
}

section._block h2 {
  font-size: 2rem;
  color: #00bcd4;
  margin-bottom: 1.5rem;
  text-align: center;
}

/* === FOOTER === */
footer._footer {
  background-color: #222;
  color: #eee;
  text-align: center;
  padding: 3rem 2rem;
}

footer._footer p {
  font-size: 0.9rem;
  margin-top: 1rem;
}

/* === WHATSAPP BUTTON === */
._whatsapp {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
}

._whatsapp a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background-color: #25d366;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
}

._whatsapp a:hover {
  transform: scale(1.1);
}

._whatsapp img {
  width: 30px;
  height: 30px;
}

/* === KEYFRAMES === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}