:root {
      --primary: #0a192f;
      --secondary: #64ffda;
      --white: #ffffff;
      --bg-light: #112240;
      --input-bg: #1c2b40;
      --font: 'Poppins', sans-serif;
    }

    * {
      margin: 0; padding: 0; box-sizing: border-box;
      font-family: var(--font);
    }

    body {
      background: linear-gradient(135deg, var(--primary), var(--bg-light));
      display: flex;
      align-items: center;
      justify-content: center;
      height: 100vh;
      color: var(--white);
      animation: fadeIn 1s ease-in-out;
    }

    @keyframes fadeIn {
      0% { opacity: 0; transform: scale(0.95); }
      100% { opacity: 1; transform: scale(1); }
    }

    .login-box {
      background-color: rgba(17, 34, 64, 0.95);
      padding: 40px;
      border-radius: 15px;
      width: 90%;
      max-width: 450px;
      box-shadow: 0 0 15px rgba(0,0,0,0.3);
      animation: slideUp 0.6s ease;
    }

    @keyframes slideUp {
      from { transform: translateY(40px); opacity: 0; }
      to { transform: translateY(0); opacity: 1; }
    }

    h2 {
      text-align: center;
      margin-bottom: 25px;
      font-weight: 600;
      font-size: 22px;
    }

    .brand-logo {
      font-weight: 700;
      color: var(--white);
      background: linear-gradient(45deg, #64ffda, #1de9b6);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      font-family: 'Poppins', sans-serif;
      letter-spacing: 1px;
    }

    .input-group {
      position: relative;
      margin-bottom: 20px;
    }

    .input-group label {
      display: block;
      margin-bottom: 6px;
      font-weight: 500;
      color: #c4c4c4;
    }

    .input-group input {
      width: 100%;
      padding: 12px 15px 12px 45px;
      border: none;
      border-radius: 10px;
      background-color: var(--input-bg);
      color: var(--white);
      font-size: 15px;
      transition: all 0.3s;
    }

    .input-group input:focus {
      outline: none;
      background-color: #223952;
      border: 1px solid var(--secondary);
    }

    .input-group i.fa {
      position: absolute;
      left: 15px;
      top: 70%;
      transform: translateY(-50%);
      color: #aaa;
      font-size: 16px;
      pointer-events: none;
    }

    .toggle-icon {
      position: absolute;
      right: 15px;
      top: 70%;
      transform: translateY(-50%);
      cursor: pointer;
      color: #aaa;
      font-size: 16px;
    }

    .btn {
      width: 100%;
      background-color: var(--secondary);
      border: none;
      padding: 12px;
      border-radius: 10px;
      color: var(--primary);
      font-weight: bold;
      font-size: 16px;
      cursor: pointer;
      transition: background 0.3s;
    }

    .btn:hover {
      background-color: #53d7bd;
    }

    .footer-text {
      margin-top: 20px;
      text-align: center;
      font-size: 14px;
    }

    .footer-text a {
      color: var(--secondary);
      text-decoration: none;
    }

    @media (max-width: 480px) {
      .login-box {
        padding: 25px;
      }
    }