/* =========================
   RESET & BASE
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.7;
  color: #1f2937;
  background: linear-gradient(-45deg, #020617, #0f172a, #0f766e, #022c22);
  background-size: 400% 400%;
  animation: gradientBG 18s ease infinite;
  min-height: 100vh;
}

@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

img {
  max-width: 100%;
  display: block;
}

/* =========================
   HEADER & NAVIGATION
========================= */
header {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 6px 20px rgba(0,0,0,.08);
}

header .logo {
  text-align: center;
  padding: 0.8rem 0;
}

header .logo img {
  height: 55px;
}

nav ul {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 1.6rem;
  padding-bottom: 1rem;
  flex-wrap: wrap;
}

nav a {
  text-decoration: none;
  font-weight: 600;
  color: #020617;
  transition: color .3s ease;
}

nav a:hover,
nav a.active {
  color: #0f766e;
}

/* =========================
   SECTION BASE
========================= */
section {
  padding: 4.5rem 1.2rem;
  max-width: 1200px;
  margin: auto;
}

section h2 {
  text-align: center;
  font-size: 2.5rem;
  color: #ffffff;
  margin-bottom: 1rem;
}

.section-intro {
  max-width: 880px;
  margin: 0 auto 3rem auto;
  text-align: center;
  color: #e5e7eb;
  font-size: 1.05rem;
}

/* =========================
   BLOG GRID & CARDS
========================= */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.2rem;
}

.card {
  background: #ffffff;
  border-radius: 16px;
  padding: 2.2rem;
  box-shadow: 0 20px 45px rgba(0,0,0,.18);
  transition: transform .3s ease, box-shadow .3s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 28px 60px rgba(0,0,0,.25);
}

.card h3 {
  color: #0f766e;
  margin-bottom: .8rem;
  font-size: 1.35rem;
}

.card p {
  margin-bottom: .9rem;
  color: #374151;
}

/* =========================
   BUTTONS
========================= */
.btn {
  display: inline-block;
  margin-top: 1rem;
  padding: .8rem 2.2rem;
  background: linear-gradient(135deg, #0f766e, #14b8a6);
  color: #ffffff;
  font-weight: 600;
  border-radius: 30px;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease;
}

.btn:hover {
  transform: scale(1.05);
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
}

/* =========================
   BLOG FOOTER CONTENT
========================= */
.blog-footer-content {
  margin-top: 4rem;
  padding: 2.5rem;
  background: rgba(255,255,255,.08);
  border-radius: 18px;
  backdrop-filter: blur(6px);
}

/* =========================
   FOOTER
========================= */
footer {
  background: #020617;
  color: #9ca3af;
  text-align: center;
  padding: 2.2rem 1rem;
}

footer a {
  color: #5eead4;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
  section h2 {
    font-size: 2rem;
  }

  .card {
    padding: 1.8rem;
  }
}

@media (max-width: 480px) {
  nav ul {
    gap: 1rem;
  }

  section {
    padding: 3.5rem 1rem;
  }
}

.whatsapp-float {
  position: fixed;
  bottom: 90px;
  right: 20px;
  background: #25d366;
  color: #fff;
  font-size: 26px;
  padding: 14px 16px;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(0,0,0,.3);
  z-index: 999;
}

.call-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #0f766e;
  color: white;
  font-size: 26px;
  padding: 14px 16px;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(0,0,0,.3);
  z-index: 999;
}