/* ===== GLOBAL ===== */
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Arial, sans-serif;
  background: #0b1c2c;
  color: #e6eef5;
  line-height: 1.6;
}

/* ===== HEADER ===== */
header {
  position: sticky;
  top: 0;
  background: rgba(5, 15, 25, 0.85);
  backdrop-filter: blur(10px);
  padding: 15px 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  z-index: 1000;
}

header h1 {
  margin: 0;
  font-size: 22px;
  letter-spacing: 1px;
}

/* ===== NAV ===== */
nav {
  margin-top: 8px;
}

nav a {
  color: #cfe6ff;
  margin-right: 20px;
  text-decoration: none;
  font-size: 14px;
  position: relative;
  transition: 0.3s;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: #00c2ff;
  transition: 0.3s;
}

nav a:hover {
  color: white;
}

nav a:hover::after {
  width: 100%;
}

/* ===== HERO ===== */
.hero {
  height: 80vh;
  background: linear-gradient(
      rgba(5,15,25,0.6),
      rgba(5,15,25,0.9)
    ),
    url('images/ap30-hero.jpg') center/cover no-repeat;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  text-align: center;
  padding: 20px;
}

.hero h2 {
  font-size: 48px;
  margin: 0;
  letter-spacing: 2px;
}

.hero p {
  font-size: 20px;
  opacity: 0.85;
}

/* ===== SECTIONS ===== */
section {
  max-width: 1100px;
  margin: 60px auto;
  padding: 40px;
  background: linear-gradient(
    145deg,
    rgba(255,255,255,0.03),
    rgba(255,255,255,0.01)
  );
  border-radius: 14px;
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.08);
}

h2 {
  font-size: 28px;
  margin-bottom: 15px;
  border-left: 4px solid #00c2ff;
  padding-left: 10px;
}

h3 {
  color: #8fd3ff;
}

/* ===== LISTS ===== */
ul {
  padding-left: 20px;
}

li {
  margin-bottom: 6px;
}

/* ===== IMAGES ===== */
img {
  border-radius: 10px;
  margin: 10px;
  transition: transform 0.4s ease, box-shadow 0.4s;
}

img:hover {
  transform: scale(1.05);
  box-shadow: 0 10px 25px rgba(0, 194, 255, 0.3);
}

/* ===== TABLE ===== */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  background: rgba(255,255,255,0.02);
}

th {
  background: #00c2ff;
  color: #002233;
  text-transform: uppercase;
  font-size: 13px;
  letter-spacing: 1px;
}

th, td {
  padding: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

tr:hover {
  background: rgba(0,194,255,0.08);
}

/* ===== LINKS ===== */
a {
  color: #00c2ff;
}

a:hover {
  color: #66d9ff;
}

/* ===== BUTTON STYLE (for downloads) ===== */
a[download] {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 18px;
  background: #00c2ff;
  color: #002233;
  border-radius: 6px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}

a[download]:hover {
  background: #0099cc;
}

/* ===== FOOTER ===== */
footer {
  text-align: center;
  padding: 20px;
  margin-top: 60px;
  background: #05111d;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 14px;
  color: #aaa;
}