* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Arial, sans-serif;
  color: #fff;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.hero-bg {
  background: url('https://images.unsplash.com/photo-1509099836639-18ba1795216d?auto=format&fit=crop&w=1950&q=80')
              no-repeat center center/cover;
  position: relative;
}

.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 0;
}

.page-wrapper {
  z-index: 1;
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header {
  width: 100%;
  padding: 25px 30px 10px;
  text-align: center;
}

.site-title {
  font-size: 2.2em;
  color: #00c6fb;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
}

nav a {
  color: #fff;
  margin: 0 12px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.3s;
}

nav a.active, nav a:hover {
  color: #00c6fb;
}

.content-card {
  max-width: 1000px;
  width: 90%;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 18px;
  padding: 35px 30px;
  margin: 40px 0;
  box-shadow: 0 5px 25px rgba(0, 0, 0, 0.35);
  text-align: left;
}

h1, h2, h3 {
  color: #00c6fb;
  margin-bottom: 14px;
}

p {
  color: #f1f1f1;
  line-height: 1.7;
  margin-bottom: 12px;
}

.btn {
  display: inline-block;
  background: #00c6fb;
  color: #fff;
  padding: 12px 28px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.btn:hover {
  background: #005bea;
  transform: translateY(-2px);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.card {
  background: rgba(0, 0, 0, 0.55);
  border-radius: 14px;
  padding: 18px 18px 20px;
}

footer {
  text-align: center;
  color: #ddd;
  padding: 15px 0 20px;
}

.social-icons {
  display: flex;
  justify-content: center;
  gap: 18px;
  margin-bottom: 6px;
}

.social-icons a {
  color: #fff;
  font-size: 1.4em;
  text-decoration: none;
  transition: 0.3s;
}

.social-icons a:hover {
  color: #00c6fb;
  transform: scale(1.15);
}

form {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

input, textarea {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: none;
  outline: none;
  font-size: 1em;
}

button.btn {
  cursor: pointer;
}