/* ========== Reset & Base ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: #d3d9e6;
  color: #222;
  line-height: 1.6;
  scroll-behavior: smooth;
}

/* ========== Header ========== */
header {
  position: fixed;
  top: 0;
  width: 100%;
  height: 70px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2rem;
  z-index: 1000;
}

.logo {
  font-size: 1.8rem;
  font-weight: bold;
  color: #5a4ae3;
}

nav a {
  color: #5a4ae3;
  text-decoration: none;
  margin-left: 1.5rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.3s ease;
}

nav a:hover {
  background: #e0e7ff;
  color: #5a4ae3;
  box-shadow: 0 4px 10px rgba(90, 74, 227, 0.2);
}

/* ========== Hero Section ========== */
.hero {
  margin-top: 70px;
  width: 100%;
  height: 100vh;
  background-image: url('../images/helx-banner.jpg');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(255,255,255,0.8), rgba(255,255,255,0.2));
  backdrop-filter: blur(3px);
}

.hero-text {
  position: relative;
  z-index: 1;
  padding-left: 5%;
  background: rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  backdrop-filter: blur(8px);
  padding: 2rem 3rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  max-width: 45%;
}

.hero-text h1 {
  font-size: 3.2rem;
  color: #5a4ae3;
  margin-bottom: 0.8rem;
}

.hero-text p {
  font-size: 1.3rem;
  color: #333;
}

/* ========== CTA Buttons ========== */
.btn {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.9rem 2rem;
  font-size: 1rem;
  font-weight: bold;
  color: white;
  border: none;
  border-radius: 10px;
  background: linear-gradient(to right, #7b5de3, #5c8df7);
  box-shadow: 0 8px 16px rgba(123, 93, 227, 0.3);
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s ease;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(123, 93, 227, 0.4);
}

/* ========== Content Section ========== */
.content {
  padding: 6rem 2rem;
  max-width: 1000px;
  margin: auto;
  text-align: center;
}

.content h2 {
  font-size: 2.5rem;
  color: #5a4ae3;
  margin-bottom: 1.5rem;
}

.content p {
  font-size: 1.2rem;
  color: #444;
  line-height: 1.8;
  max-width: 800px;
  margin: auto;
}

/* ========== Category Section ========== */
.category {
  margin: 2.5rem 0;
}

.category h3 {
  font-size: 1.4rem;
  color: #5a4ae3;
  margin-bottom: 0.5rem;
}

hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, #d1d5f0, transparent);
  margin: 2rem 0;
}

/* ========== White List Section ========== */
.wh