/* GENERAL */

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background-color: #0f1c2e;
  color: white;
}

/* HERO SECTION */

.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, #0f1c2e, #1e3c72);
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2rem;
  color: #ddd;
}

/* VIDEO SECTION */

.video-section {
  text-align: center;
  padding: 60px 20px;
}

.video-section h2 {
  margin-bottom: 30px;
}

video {
  width: 80%;
  max-width: 800px;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

/* PAPER LINK SECTION */

.paper-link-section {
  text-align: center;
  padding: 60px 20px;
  background-color: #132742;
}

.paper-link-section h2 {
  margin-bottom: 20px;
}

.paper-link-section p {
  max-width: 600px;
  margin: 0 auto 30px auto;
  line-height: 1.6;
  color: #ddd;
}

/* BUTTONS */

.btn {
  display: inline-block;
  padding: 12px 25px;
  background-color: #4da6ff;
  color: white;
  text-decoration: none;
  border-radius: 30px;
  transition: 0.3s ease;
}

.btn:hover {
  background-color: #1e90ff;
}

.btn-outline {
  display: inline-block;
  padding: 10px 22px;
  border: 2px solid #4da6ff;
  color: #4da6ff;
  text-decoration: none;
  border-radius: 30px;
  transition: 0.3s ease;
}

.btn-outline:hover {
  background-color: #4da6ff;
  color: white;
}

/* FOOTER */

footer {
  text-align: center;
  padding: 30px;
  background-color: #0b1626;
  font-size: 0.9rem;
  color: #aaa;
}

/* ======================= */
/* RESEARCH PAPER STYLING  */
/* ======================= */

.paper-body {
  background-color: #f4f4f4;
  color: #111;
  font-family: Georgia, serif;
}

.paper-container {
  max-width: 750px;
  margin: 80px auto;
  background: white;
  padding: 60px;
  box-shadow: 0 15px 40px rgba(0,0,0,0.1);
}

.paper-title {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 10px;
}

.paper-author {
  text-align: center;
  font-style: italic;
  margin-bottom: 30px;
  color: #555;
}

.paper-content p {
  margin-bottom: 20px;
  line-height: 1.8;
  text-align: justify;
}

.back-home {
  text-align: center;
  margin-top: 40px;
}

.back-home a {
  text-decoration: none;
  color: #1e3c72;
}