body {
            font-family: 'Arial', sans-serif;
            background-color: #f2f2f2;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .container {
            background-color: #fff;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            width: 400px;
            text-align: center;
        }
        h2 {
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 15px;
            text-align: left;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
        }
        .form-group input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        .form-group input:focus {
            border-color: #007BFF;
        }
        button {
            padding: 10px 20px;
            border: none;
            background-color: #007BFF;
            color: #fff;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }
        button:hover {
            background-color: #0056b3;
        }
        .alert {
            margin-top: 20px;
            padding: 15px;
            border-radius: 5px;
            font-size: 14px;
            font-weight: bold;
        }
        .alert-danger {
            color: #721c24;
            background-color: #f8d7da;
            border-color: #f5c6cb;
        }
        .alert-success {
            color: #155724;
            background-color: #d4edda;
            border-color: #c3e6cb;
        }
  
        body {
            font-family: 'Arial', sans-serif;
            background-color: #f2f2f2;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }
        .container {
            background-color: #fff;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
            width: 400px;
            text-align: center;
        }
        h2 {
            margin-bottom: 20px;
        }
        .form-group {
            margin-bottom: 15px;
            text-align: left;
        }
        .form-group label {
            display: block;
            margin-bottom: 5px;
        }
        .form-group input {
            width: 100%;
            padding: 10px;
            border: 1px solid #ccc;
            border-radius: 5px;
        }
        .form-group input:focus {
            border-color: #007BFF;
        }
        .form-group .error {
            color: #ff6b6b;
            font-size: 14px;
        }
        .form-group .success {
            color: #28a745;
            font-size: 14px;
        }
        button {
            padding: 10px 20px;
            border: none;
            background-color: #007BFF;
            color: #fff;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
        }
        button:hover {
            background-color: #0056b3;
        }
  
    button[type="button"] {
        padding: 10px 20px;
        border: none;
        background-color: #28a745; /* Green color */
        color: #fff;
        border-radius: 5px;
        cursor: pointer;
        font-size: 16px;
        text-decoration: none; /* Remove underline from link */
    }
    button[type="button"]:hover {
        background-color: #218838; /* Darker shade of green */
    }
    
    /* Style for forgot password link */
    .form-group a {
        color: #007BFF; /* Blue color */
        text-decoration: none; /* Remove underline */
        font-size: 14px;
    }
    .form-group a:hover {
        text-decoration: underline; /* Underline on hover */
    }
    
    /* Style for remember me checkbox */
    .form-group label {
        margin-left: 5px;
        font-size: 14px;
    }
    /* ==========================
   FOOTER LOGO – HSOCOLD
   ========================== */
.logo-footer {
  display: block;
  margin: 20px auto;     /* căn giữa footer */
  height: 90px;          /* chỉnh kích thước mong muốn */
  max-width: 250px;      /* giới hạn chiều rộng */
  object-fit: contain;
  z-index: 10;
}

/* responsive mobile */
@media (max-width: 900px) {
  .logo-footer {
    height: 65px;
    margin: 15px auto;
  }
}
    /* Mobile-specific layout for section--1 */
@media (max-width: 900px) {
  /* Ẩn video desktop trên mobile */
  .section--1 .section__background video.desktop,
  .section--1 .imgBg.desktop {
    display: none !important;
  }

  /* Hiển thị logo mobile và căn giữa */
  .logo.mobile {
    display: block;
    width: 110px;
    height: 44px;
    background-size: contain;
    background-repeat: no-repeat;
    margin: 10px auto;
  }

  /* mobile header row: logo + hamburger (nếu cần) */
  .mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    gap: 8px;
  }
  .mobile-header .hamburger {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    background: rgba(255,255,255,0.06);
    cursor: pointer;
  }

  /* phần nội dung chính chuyển thành cột */
  .section--1__content.flex.desktop {
    display: block;
    padding: 10px 14px 20px;
  }

  .section--1__content .imgBg.mobile {
    display: block;
    width: 100%;
    max-height: 160px;
    object-fit: cover;
    margin-bottom: 8px;
  }

  /* khu vực nút tải & qrcode: lưới 2 cột */
  .section--1__content .download-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    align-items: center;
    margin: 8px 0 12px;
  }

  .section--1__content .download-grid a.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    padding: 6px;
    border-radius: 8px;
    background: rgba(255,255,255,0.03);
    text-decoration: none;
  }
  .section--1__content .download-grid a.btn img {
    height: 28px;
    width: auto;
  }

  /* qrcode lớn hơn, căn giữa */
  .section--1__content .qrcode {
    width: 120px;
    height: 120px;
    display: block;
    margin: 6px auto 10px;
    object-fit: cover;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
  }

  /* nút napatm (topup) to, full-width */
  .section--1__content .btn-topup {
    display: block;
    width: calc(100% - 28px);
    margin: 8px auto;
    height: 52px;
    border-radius: 10px;
    text-align: center;
  }

  /* group hành động nhỏ ở dưới: webshop, bangtop... */
  ul.btn-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    padding: 8px 12px;
  }
  ul.btn-container > li a {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    height: 48px;
    border-radius: 8px;
  }

  /* Ẩn các element chỉ desktop */
  .desktop-only { display: none !important; }
  /* Hiện mobile-only */
  .mobile-only { display: block !important; }
}

/* ensure mobile-only default hidden on desktop */
.mobile-only { display: none; }