:root {
    --primary-color: #c2a38d;
    --secondary-color: #c2a38d;
    --tertiary-color: #A67B5B;
    --quaternary-color: #ECB176;
}
body{
    background-color: #ffffff;
}
.gra-w{
        position: absolute;
        bottom: 0;
        width: 100%;
        height: 100px;
        background: linear-gradient(transparent,white);
}
@media (max-width: 768px) {
     .navbar {
          background: black;
          position: fixed;
          z-index: 999999;
          width: 100%;
          height: 75px        ;
      }
      .navbar-collapse{
          background-color: black;
          width: 100%;
          padding: 20px;
          border-radius: 10px;
      }
      .card-intro{
          display: block;
      }
      .card-size{
          width: 100%;
          margin-top: 20px;
      }
      .btn-center {
          margin-top: 100px;
          background-color: transparent;
          border-radius: 30px;
          font-size: 15px;
          border: 2px solid white;
          padding: 10px 30px;
  }
} 
@media (min-width: 769px) {
     .btn-center {
          margin-top: 100px;
          background-color: transparent;
          border-radius: 30px;
          font-size: 25px;
          border: 2px solid white;
          padding: 10px 30px;
  }
     .navbar {
          background: linear-gradient(rgb(0, 0, 0, 0.5),transparent);
          position: fixed;
          z-index: 999999;
          width: 100%;
          height: 75px        ;
      }
      .card-intro{
          display: flex;justify-content: space-between;
      }
      .card-size{
          width: 15vw;
      }
}

.lead{
    width: 70%;
    margin-left:auto ;
    margin-right: auto;
}
.navbar-brand {
    font-weight: bold;
    color: var(--secondary-color);
}

.navbar-nav .nav-link {
    color: var(--secondary-color);
    cursor: pointer;
    font-size: 20px;
}

.navbar-nav .nav-link:hover {
    color: var(--tertiary-color);
}
.btn-secondary{
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: black !important;
}
.btn-outline-primary {
    color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.btn-outline-primary:hover {
    color: white;
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.hero {
    background-image: url('../../src/index2.webp'); /* Đường dẫn đến ảnh bìa */
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    color: white;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5); /* Lớp phủ màu đen mờ */
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.btn-primary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

.card-icon {
    font-size: 4rem;
    color: var(--secondary-color);
}

.card-title {
    color: var(--secondary-color);
}

.card {
    border: none;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.about-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.about-title {
    color: var(--secondary-color);
    margin-bottom: 10px;
}