body {
      margin: 0;
      min-height: 100vh;
      display: flex;
      justify-content: center;
      align-items: center;
      font-family: 'Inter', Arial, sans-serif;
      background: url("../images/Background.png") no-repeat center center fixed;
      background-size: cover;
      color: #222;
      position: relative;
      overflow: hidden;
    }

    .blob {
      position: absolute;
      border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
      z-index: -1;
      opacity: 0.22;
    }
    .blob1 { width: 300px; height: 280px; background: #fa3c65; top: -80px; left: -100px; transform: rotate(25deg); }
    .blob2 { width: 240px; height: 260px; background: #000; bottom: -100px; right: -60px; transform: rotate(-15deg); }
    .blob3 { width: 200px; height: 200px; background: #555; top: 40%; left: -70px; transform: rotate(40deg); }
    .blob4 { width: 150px; height: 180px; background: #999; bottom: 20%; right: 30%; transform: rotate(70deg); }

    .circle-top-right {
      width: 240px;
      height: 240px;
      background: #fa3c65;
      position: absolute;
      top: -100px;
      right: -100px;
      border-radius: 50%;
      z-index: -1;
      opacity: 0.35;
    }

    .signup-card {
      background: rgba(255,255,255,0.42); /* semi-transparent white */
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: 1.4rem;
      box-shadow: 0 8px 24px rgba(0,0,0,0.1);
      padding: 2.5rem 2rem;
      max-width: 480px;
      width: 100%;
      text-align: center;
      z-index: 1;
    }

    .signup-title {
      font-family: 'Montserrat', Arial, sans-serif;
      font-weight: 900;
      font-size: 1.8rem;
      margin-bottom: 2rem;
    }
    .signup-title span { color: #fa3c65; }

    /* ✅ Updated input style (same as profile page) */
    .input-field {
      position: relative;
      margin-bottom: 1.4rem;
      text-align: left;
    }
    .input-field label {
      font-size: 0.9rem;
      font-weight: 600;
      color: #333;
      display: block;
      margin-bottom: 0.3rem;
    }
    .input-field input {
      width: 100%;
      padding: 0.8rem 1rem;
      border: 2px solid transparent;     /* start invisible */
      border-bottom: 2px solid #fa3c65;  /* pink underline */
      font-size: 1rem;
      font-family: inherit;
      outline: none;
      background: transparent;
      transition: all 0.3s ease;
      box-sizing: border-box;            /* prevents overflow */
    }
    .input-field input:focus,
    .input-field input:not(:placeholder-shown) {
      border: 2px solid #fa3c65;    /* full box highlight */
      border-radius: 0.6rem;
    }

    .signup-btn {
      padding: 1rem;
      font-size: 1rem;
      font-weight: 700;
      background: #111827;
      color: #fff;
      border: none;
      border-radius: 2rem;
      cursor: pointer;
      width: 100%;
      margin-top: 0.8rem;
      transition: background 0.2s ease;
    }
    .signup-btn:hover { background: #232323; }

    .alt-action {
      margin-top: 1rem;
      font-size: 0.92rem;
    }
    .alt-action a {
      color: #fa3c65;
      font-weight: 600;
      text-decoration: none;
    }
    .alt-action a:hover { text-decoration: underline; }