:root {
   --primary-color: #d3d3d3;
}

* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
}

body {
   font-family: Arial, sans-serif;
   line-height: 1.6;
   background-color: #ffffff;
   color: #333;
   display: flex;
   flex-direction: column;
   min-height: 100vh;
}

/* Header Styles */
.main-header {
   background-color: var(--primary-color);
   padding: 10px;
}

.header-items {
   display: flex;
   align-items: center;
   justify-content: space-between;
   width: 100%;
   max-width: 900px;
   margin: 0 auto;
   padding: 0 10px;
}

.container-logo {
   display: flex;
   align-items: center;
   justify-content: center;
   flex-grow: 1;
}

.logo-header {
   width: 40px;
   height: 40px;
   margin-right: 10px;
   object-fit: contain;
}

.logo {
   color: white;
   font-size: 24px;
   font-weight: normal;
   letter-spacing: 5px;
   margin: 0;
   text-align: center;
   text-transform: uppercase;
}

.menu-icon,
.search-icon {
   background: none;
   border: none;
   cursor: pointer;
   padding: 5px;
   display: flex;
   flex-direction: column;
   justify-content: center;
   align-items: center;
   gap: 4px;
   transition: opacity 0.3s ease;
   min-width: 40px;
}

.menu-icon span {
   display: block;
   width: 25px;
   height: 3px;
   background-color: white;
   border-radius: 2px;
   transition: all 0.3s ease;
}

.search-icon svg {
   width: 24px;
   height: 24px;
}

.menu-icon:hover span,
.search-icon:hover svg {
   opacity: 0.8;
}

.menu-icon:focus,
.search-icon:focus {
   outline: 2px solid white;
   outline-offset: 2px;
}

.main-content {
   flex-grow: 1;
   padding: 1rem 1rem 4rem;
   width: 100%;
}

.container {
   max-width: 960px;
   margin: 0 auto;
   text-align: center;
}

h1 {
   font-size: 2.25rem;
   font-weight: bold;
   margin-bottom: 1.5rem;
   line-height: 1.2;
}

.video-wrapper {
   margin-bottom: 1.5rem;
}

.sound-check {
   font-size: 1.1rem;
   font-weight: bold;
   color: #444;
}

.references {
   margin-top: 10rem;
   font-size: 0.9rem;
   color: #666;
   text-align: center;
}

/* Footer */
footer {
   background-color: var(--primary-color);
   padding: 40px 20px 20px;
   text-align: center;
   color: #000;
}

.footer-brand {
   margin-bottom: 20px;
}

footer p {
   margin-bottom: 10px;
   font-size: 18px;
}

.logo-footer {
   width: 80px;
   height: auto;
   margin: 15px auto 0;
   display: block;
   object-fit: contain;
}

.footnote {
   font-size: 16px;
   line-height: 1.6;
   max-width: 800px;
   margin: 10px auto;
   padding: 0 20px;
}

.footer-links {
   margin-top: 20px;
   font-size: 16px;
}

.footer-links a {
   color: #000;
   text-decoration: none;
   transition: opacity 0.3s ease;
}

.footer-links a:hover {
   text-decoration: underline;
   opacity: 0.8;
}

.footer-links a:focus {
   outline: 2px solid white;
   outline-offset: 2px;
}

@media (max-width: 600px) {
   h1 {
      font-size: 1.75rem;
   }

   .logo {
      font-size: 16px;
      letter-spacing: 2px;
   }

   .logo-header {
      width: 30px;
      height: 30px;
      margin-right: 8px;
   }

   .menu-icon span {
      width: 20px;
   }

   .search-icon svg {
      width: 20px;
      height: 20px;
   }

   footer {
      padding: 30px 15px 15px;
   }

   .footnote {
      font-size: 14px;
      padding: 0 10px;
   }

   .footer-links {
      font-size: 14px;
      line-height: 1.8;
   }

   .logo-footer {
      width: 60px;
   }
}