* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: Arial, sans-serif;
        }

        :root{
            --bg-accent-1: rgba(186, 104, 200, 0.12);
            --bg-accent-2: rgba(100, 181, 246, 0.10);
            --bg-base-1: #f0f8ff;
            --bg-base-2: #fff0f9;
        }

        body {
            background-color: #f4f4f4;
            background-image: radial-gradient(circle at 12% 18%, var(--bg-accent-1) 0%, rgba(0,0,0,0) 28%), radial-gradient(circle at 84% 82%, var(--bg-accent-2) 0%, rgba(0,0,0,0) 28%), linear-gradient(135deg, var(--bg-base-1) 0%, var(--bg-base-2) 100%);
            background-size: 170% 170%, 130% 130%, cover;
            background-attachment: fixed;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            animation: bgShift 28s linear infinite;
        }

        @media (prefers-reduced-motion: reduce){
            body{ animation:none; }
        }

        .container {
            background: rgba(255,255,255,0.85);
            width: 340px;
            padding: 25px;
            border-radius: 14px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.08);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            border: 1px solid rgba(255,255,255,0.6);
        }

        h2 {
            text-align: center;
            margin-bottom: 18px;
            font-weight: 700;
            color: #222;
        }

        label {
            font-size: 14px;
            font-weight: 600;
            color: #333;
        }

        input {
            width: 100%;
            padding: 10px;
            margin: 7px 0 16px;
            border: 1px solid #ccc;
            border-radius: 8px;
            font-size: 14px;
        }

        button {
            width: 100%;
            padding: 12px;
            background: #222;
            color: white;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            transition: 0.2s;
        }

        button:hover {
            background: #444;
        }

        .link-btn {
            margin-top: 14px;
            text-align: center;
            font-size: 14px;
        }

        .link-btn a {
            color: #222;
            text-decoration: none;
            font-weight: 700;
        }

        .error {
            color: red;
            font-size: 13px;
            margin-bottom: 10px;
        }