:root {
  --primary: #006769;
  --primary-dark: #004E4F;
  --bg: #f4f4f6;
  --card-bg: #ffffff;
  --text: #333;
  --muted: #777;
  --pdf-bg: #f6e6c9;
  --border: #e5e5e5;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Inter", sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
}

.container {
  max-width: 1100px;
  margin: auto;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  margin-bottom: 80px;
  background: #006769;
  backdrop-filter: blur(8px);
  padding: 8px 16px;
  box-shadow: 0 6px 15px rgba(26, 35, 50, 0.3);
  z-index: 1000;
  transition: all 0.3s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: none;
  margin: 0 auto;
  padding: 0 12px;
}

.mobile-menu-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
}

.hamburger {
  display: inline-block;
  width: 30px;
  height: 30px;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='m4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 100%;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 8px 16px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  color: #fff;
  text-decoration: none;
  padding: 8px 12.8px;
  font-size: 13.6px;
  font-weight: 550;
  text-transform: uppercase;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: 6px;
}

/* Underline */
.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0%;
  height: 2px;
  background-color: #fff;
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

/* Hover effect */
.nav-link:hover::after {
  width: 85%;
}

.nav-p {
  display: block;
  color: #fff;
  text-decoration: none;
  padding: 8px 12.8px;
  font-size: 13.6px;
  font-weight: 550;
  text-transform: uppercase;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  background-color: #006769;
  list-style: none;
  padding: 8px 0;
  border-radius: 10px;
  min-width: 160px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
  z-index: 1000;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: block;
  color: #f5f5f5;
  text-decoration: none;
  padding: 8px 16px;
  font-size: 13.6px;
  font-weight: 500;
  text-transform: uppercase;
  white-space: nowrap;
  transition: background-color 0.2s ease;
}

.dropdown-menu a:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.nav-center-image {
  display: none;
}

.nav-center-image img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
}

@media (max-width: 992px) {
  .navbar {
    border-radius: 0 0 20px 20px;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .nav-link:hover{
    background: #fff;
    color: #006769;
  }

  .nav-link:hover::after{
    width: 0%;
  }

  .nav-container{
    justify-content: flex-start;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 86px;
    left: -100%;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    background-color: #006769;
    width: 100%;
    gap: 0;
    padding: 20px;
    transition: left 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    max-height: calc(100vh - 86px);
    overflow-y: auto;
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-item {
    margin: 8px 0;
  }

  .nav-center-image {
    display: block;
    position: absolute;
    right: 10%;
    top: 16px;
    z-index: 1100;
    pointer-events: none;
  }

  .nav-menu > .nav-item:first-child img {
    display: none;
  }
}

/* Header */
.page-title {
  text-align: center;
  font-size: 42px;
  margin-top: 100px;
  color: var(--primary);
  margin-bottom: 30px;
}

.back-btn {
  display: block;
  width: fit-content;
  margin: 0 auto 40px auto;
  background: var(--primary);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  transition: 0.3s ease;
}

.back-btn:hover {
  background: var(--primary-dark);
}

/* Info Card */
.info-card {
  background: var(--card-bg);
  border-radius: 14px;
  padding: 30px;
  margin-bottom: 40px;
  border: 1px solid var(--border);
}

.info-card h2 {
  color: var(--primary);
  margin-bottom: 15px;
}

.info-card p {
  color: var(--muted);
  line-height: 1.6;
}

/* Track List */
.track-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Track Item */
.track-item {
  background: var(--card-bg);
  border-radius: 14px;
  border: 1px solid var(--border);
  padding: 20px;
  display: flex;
  margin: 8px;
  align-items: center;
  gap: 20px;
  text-decoration: none;
  color: inherit;
  transition: 0.3s ease;
}

.track-item:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.08);
  transform: translateY(-3px);
  border: #004E4F solid 1px;
}

/* Number Box */
.track-number {
  background: var(--primary);
  color: white;
  min-width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: bold;
}

/* Track Content */
.track-content {
  flex: 1;
}

.track-content h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

/* PDF Badge */
.pdf-badge {
  background: var(--pdf-bg);
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 14px;
  display: inline-block;
}

/* ===== Footer ===== */
.footer {
  background: #006769;
  color: white;
  padding: 2rem 1rem;
  margin-top: 2rem;
}

.footer-content {
  max-width: 900px;
  margin: auto;
  text-align: center;
}

.footer-content p {
  font-size: 1rem;
  color: white;
}


/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  .page-title {
    font-size: 30px;
  }

  .track-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .track-number {
    width: 50px;
    height: 50px;
  }


.track-content h3{
    font-size: 16px;
}
}