:root {
      --black: #0a0a0a;
      --white: #ffffff;
      --gold: #c5a47e;
      --dark-gold: #9c7c5b;
      --gray: #f5f5f5;
    }

    body {
      margin: 0;
      font-family: 'Montserrat', sans-serif;
      background-color: #fdfaf5;
      color: #333;
    }

    /* Header Navbar */
    /* Liquid Glass Navbar */
    header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        padding: 18px 5%;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
        border-radius: 40px;
        margin-top: 5px;
        /* Light glass base */
        background: rgba(255, 255, 255, 0.25);
        backdrop-filter: blur(12px) saturate(180%);
        -webkit-backdrop-filter: blur(12px) saturate(180%);
        border: 1px solid rgba(255, 255, 255, 0.3);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        border-bottom: 1px solid rgba(255, 255, 255, 0.25);
        transition: all 0.4s ease-in-out;
        }

        /* Dark “smoky glass” when scrolled */
        header.scrolled {
        background: rgba(25, 25, 25, 0.35);
        backdrop-filter: blur(14px) saturate(200%);
        -webkit-backdrop-filter: blur(14px) saturate(200%);
        border-color: rgba(255, 255, 255, 0.1);
        box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
        }

        /* Animated shine effect */
        header::after {
        content: "";
        position: absolute;
        top: 0;
        left: -50%;
        width: 200%;
        height: 100%;
        background: linear-gradient(
            120deg,
            rgba(255, 255, 255, 0.2) 0%,
            rgba(255, 255, 255, 0.05) 40%,
            rgba(255, 255, 255, 0) 60%
        );
        opacity: 0.6;
        pointer-events: none;
        transform: translateX(-100%);
        animation: glass-shine 8s linear infinite;
        }

        @keyframes glass-shine {
        0% {
            transform: translateX(-100%);
        }
        100% {
            transform: translateX(100%);
        }
        }

        /* Logo (visible in both modes) */
        .logo {
        font-family: 'Playfair Display', serif;
        font-size: 28px;
        font-weight: 600;
        color: #111; /* visible text color */
        text-decoration: none;
        letter-spacing: 1px;
        transition: color 0.3s ease;
        }

        .logo span {
        color: var(--gold);
        }

        header.scrolled .logo {
        color: #000000; /* white when scrolled */
        }

        header.scrolled .logo span {
        color: var(--dark-gold);
        }

        /* Nav links */
        .nav-links {
        display: flex;
        list-style: none;
        }

        .nav-links li {
        margin-left: 40px;
        }

        .nav-links a {
        color: #111; /* visible on light glass */
        text-decoration: none;
        font-size: 14px;
        font-weight: 500;
        letter-spacing: 1px;
        text-transform: uppercase;
        transition: color 0.3s ease;
        position: relative;
        }

        .nav-links a:hover {
        color: var(--dark-gold);
        }

        /* Dark mode link colors */
        header.scrolled .nav-links a {
        color: #000000; /* visible on dark glass */
        }

        header.scrolled .nav-links a:hover {
        color: var(--dark-gold);
        }

    .logo {
      font-family: 'Playfair Display', serif;
      font-size: 28px;
      font-weight: 600;
      color: var(--black);
      text-decoration: none;
      letter-spacing: 1px;
    }

    .logo span {
      color: var(--gold);
    }

    .nav-links {
      display: flex;
      list-style: none;
    }

    .nav-links li {
      margin-left: 40px;
    }

    .nav-links a {
      color: var(--black);
      text-decoration: none;
      font-size: 14px;
      font-weight: 500;
      letter-spacing: 1px;
      text-transform: uppercase;
      transition: color 0.3s ease;
      position: relative;
    }

    .nav-links a:hover {
      color: var(--gold);
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      width: 0;
      height: 1px;
      background: var(--gold);
      bottom: -5px;
      left: 0;
      transition: width 0.3s ease;
    }

    .nav-links a:hover::after {
      width: 100%;
    }

    .hamburger {
      display: none;
      cursor: pointer;
    }

    .hamburger div {
      width: 25px;
      height: 2px;
      background: var(--black);
      margin: 5px;
      transition: all 0.3s ease;
    }

    @media (max-width: 768px) {
      .nav-links {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--white);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        clip-path: circle(0px at 90% -10%);
        transition: all 0.5s ease-out;
        pointer-events: none;
      }

      .nav-links.active {
        clip-path: circle(1000px at 90% -10%);
        pointer-events: all;
      }

      .nav-links li {
        margin: 15px 0;
      }

      .hamburger {
        display: block;
      }

      .hamburger.active div:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
      }

      .hamburger.active div:nth-child(2) {
        opacity: 0;
      }

      .hamburger.active div:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
      }
    }

    /* Perfume Details Section */
    .perfume-box {
      max-width: 600px;
      margin: 100px auto 50px;
      text-align: center;
      background: #fff;
      box-shadow: 0 0 10px rgba(0,0,0,0.1);
      padding: 2rem;
      border-radius: 8px;
    }

    img {
      max-width: 100%;
      height: auto;
      border-radius: 8px;
    }

    h1 {
      font-family: 'Playfair Display', serif;
      color: var(--black);
    }

    .btn {
      display: inline-block;
      background: var(--gold);
      color: white;
      padding: 12px 30px;
      text-decoration: none;
      margin-top: 20px;
      font-weight: bold;
      border-radius: 4px;
      transition: background 0.3s;
      white-space: nowrap;
      text-align: center;
    }

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

    .back-btn {
      margin-top: 2rem;
      display: inline-block;
      text-decoration: none;
      color: var(--gold);
      font-weight: bold;
    }

    .notes-box {
      text-align: left;
      /* margin-top: 30px; */
    }

    .notes-box h3 {
      color: var(--gold);
    }

    .notes-box p {
      /* margin-top: 8px; */
      line-height: 1.6;
    }

    /* Back to Top Button */
    .back-to-top {
      position: fixed;
      bottom: 30px;
      right: 30px;
      width: 50px;
      height: 50px;
      background: var(--gold);
      color: var(--white);
      border-radius: 50%;
      display: flex;
      justify-content: center;
      align-items: center;
      cursor: pointer;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
      z-index: 999;
    }

    .back-to-top.active {
      opacity: 1;
      visibility: visible;
    }

    .back-to-top:hover {
      background: var(--dark-gold);
      transform: translateY(-5px);
    }