/* ========== Global ========== */
body {
  margin: 0;
  font-family: 'Inknut Antiqua', serif;
  background-color: #1f2b50;
  color: white;
}

/* ========== Header/Nav ========== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #2473ff;
  padding: 20px;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  color: white;
}
.logo span {
  color: lightblue;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin-left: auto;
}
nav ul li a {
  text-decoration: none;
  color: white;
  font-weight: bold;
}
nav ul li a.logout {
  color: white;
  background-color: #ff5b5b;
  padding: 10px 20px;
  border-radius: 5px;
  font-weight: bold;
}

/* ========== Main Content ========== */
main {
  padding: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Section Containers */
.section {
  background-color: #2a447d;
  border-radius: 10px;
  padding: 30px;
  margin-bottom: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}
.section h2 {
  color: lightblue;
  margin-bottom: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 8px;
}

/* ========== Info Section ========== */
.info-box {
  background-color: #2e5fff;
  border-radius: 10px;
  padding: 20px 30px;
  max-width: 850px;
  margin: 0 auto 40px;
  text-align: center;
  line-height: 1.6;
}
.info-box p {
  font-size: 1rem;
  opacity: 0.9;
}

/* ========== Video Showcase ========== */
.video-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 25px;
}
.demo-card {
  background-color: #3c4e8b;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  width: 45%;
  min-width: 320px;
  transition: transform 0.2s ease;
}
.demo-card:hover {
  transform: translateY(-3px);
}
.demo-card h3 {
  color: lightblue;
  margin-bottom: 10px;
}
.demo-card video {
  width: 100%;
  border-radius: 10px;
  border: 2px solid #1f2b50;
}
.demo-card p {
  font-size: 0.9rem;
  margin-top: 8px;
  opacity: 0.85;
}

/* ========== Metrics Grid ========== */
.metrics {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 20px;
}
.metric-card {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: #3c4e8b;
  padding: 15px 20px;
  border-radius: 8px;
  font-weight: bold;
  font-size: 1rem;
  transition: transform 0.2s ease;
}
.metric-card:hover {
  transform: translateY(-3px);
}
.metric-card i {
  font-size: 1.2rem;
}
.metric-card.speed i { color: #1abc9c; }
.metric-card.maxspeed i { color: #e67e22; }
.metric-card.consistency i { color: #3498db; }
.metric-card.fatigue i { color: #e74c3c; }
.metric-card.tension i { color: #f1c40f; }
.metric-card.power i { color: #9b59b6; }

/* ========== Explanation Section ========== */
.explanation {
  background-color: #3c4e8b;
  border-radius: 10px;
  padding: 25px 30px;
  line-height: 1.6;
  font-size: 1rem;
  margin: 40px auto 0;
}
.explanation h3 {
  color: lightblue;
  margin-bottom: 10px;
}
.explanation p {
  opacity: 0.95;
}

.instructions
{
  background-color: #3c4e8b;
  border-radius: 10px;
  padding: 25px 30px;
  line-height: 1.6;
  font-size: 1rem;
  margin: 40px auto 0;
}
.instructions h3 {
  color: lightblue;
  margin-bottom: 10px;
}
.instructions p {
  opacity: 0.95;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
  .demo-card {
    width: 100%;
  }
  .metrics {
    flex-direction: column;
    align-items: center;
  }
}