@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600&display=swap');

body {
  background-color: #0b0b0b;
  color: #d8e3f0;
  font-family: 'Montserrat', sans-serif;
  margin: 0;
  line-height: 1.7;
  background-image: 
    url('photo_2025-10-26_20-42-52.jpg'),
    radial-gradient(circle at center, #101010 0%, #050505 100%);
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  position: relative;
  overflow-x: hidden;
}

/* Film grain overlay */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image: url('https://www.transparenttextures.com/patterns/noise.png');
  opacity: 0.15; /* شدت نویز */
  pointer-events: none;
  z-index: 0;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: rgba(10, 10, 10, 0.9);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 40px;
  z-index: 100;
  border-bottom: 1px solid #1c1c1c;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.7);
}

/* Logo */
.logo {
  height: 60px;
}

/* Button */
.btn {
  background-color: #0d3b75;
  color: white;
  padding: 10px 24px;
  text-decoration: none;
  border-radius: 25px;
  font-weight: 600;
  letter-spacing: 0.5px;
  box-shadow: 0 0 12px rgba(13, 59, 117, 0.6);
  transition: all 0.3s ease;
  position: relative;
  z-index: 10;
}

.btn:hover {
  background-color: #1557b0;
  box-shadow: 0 0 18px rgba(21, 87, 176, 0.9);
}

/* Container */
.container {
  max-width: 850px;
  margin: 120px auto 60px;
  padding: 40px;
  background: rgba(30, 30, 30, 0.45);
  border-radius: 15px;
  box-shadow: 0 0 25px rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(6px);
  position: relative;
  z-index: 1;
}

/* Title Section */
.intro {
  text-align: center;
  padding: 40px;
  margin-bottom: 20px;
  border: 2px solid #1f4e8a;
  border-radius: 12px;
  background: rgba(12, 12, 12, 0.8);
  box-shadow: 0 0 20px rgba(31, 78, 138, 0.4);
}

.intro h1 {
  font-size: 2.8em;
  color: #b8c8e8;
  margin-bottom: 0.2em;
  letter-spacing: 2px;
}

.intro h2 {
  font-size: 1.4em;
  color: #9db9ff;
  margin-bottom: 1em;
}

/* Headings */
h3 {
  color: #b8c8e8;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
  margin-top: 40px;
}

/* Text Elements */
hr {
  border: 0;
  border-top: 1px solid #333;
  margin: 35px 0;
}

ul {
  list-style: disc;
  padding-left: 25px;
}

a {
  color: #2d73ff;
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: #4c8cff;
  text-decoration: underline;
}

/* Footer */
footer {
  text-align: center;
  font-size: 0.9em;
  margin-top: 40px;
  color: #9ba8b8;
  border-top: 1px solid #222;
  padding-top: 20px;
}

/* Cinematic fade animation */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

section, footer {
  animation: fadeIn 1s ease;
}
@media (max-width: 600px) {
  .intro h1 {
    font-size: 1.8em;
    line-height: 1.2;
  }
}